Patent Description:
Samples can be well protected in an ultra-high vacuum. In ultra-high vacuum experiments, different measurement environments (such as different temperature ranges, different magnetic field intensities, etc.) are generally created and maintained by different means, and are physically located in different spatial positions. However, during an experiment, it is often required to test a single sample in different environments.

During an experiment, a tester must ensure that the sample is aligned with a probe. When the sample is moved to different test environments, a new probe cannot be aligned with the specified position of the sample again due to limitions of observation conditions and other factors. Therefore, when the sample is moved to a different test environment, it is necessary for the tester to align the probe with an electrode on the sample by an optical observation method before data are collected.

However, in an ultra-high vacuum experiment, the optical observation method cannot be performed in some test environments. For example, the optical observation method cannot be implemented in a Dewar. Therefore, it is necessary for the tester to take the sample out from the ultra-high vacuum environment, align the probe with the electrode on the sample at a position where the optical observation can be performed, and after a preliminary test, combine the probe and the sample to form a measuring probe, and sent the measuring probe to a designated position in the Dewar. Therefore, the operation is relatively cumbersome, and the test efficiency is low.

Document <CIT> discloses a transport property measuring system and comprises a measuring head and a measuring cavity.

In view of problems that the operation is relatively cumbersome and the test efficiency is low, an in-situ testing device with high test efficiency is provided.

The above objectives are achieved through
an in-situ testing device as defined in claim <NUM>.

In one of the embodiments, the drive mechanism includes a first power unit and a first transmission structure; the first power unit is connected to the first transmission structure; and the first transmission structure is connected to the shielding door and drives the shielding door.

In one of the embodiments, the opening extends from an end of the testing chamber to a side wall of the testing chamber; the shielding door is L-shaped; and one edge of the shielding door is rotatably connected to the side wall of the testing chamber.

In one of the embodiments, the first transmission structure includes a first driving gear and a first driven gear; the shielding door is provided with a door shaft; the door shaft is rotatably connected to the testing chamber; and the first driven gear is sleeved over the door shaft;
the first power unit is a first magnetic force rotation hand; the first magnetic force rotation hand is connected to the first driving gear by a first long rod; and the first driving gear meshes with the first driven gear.

In one of the embodiments, the first long rod is connected to the first driving gear by a first universal joint.

In one of the embodiments, the in-situ testing device further includes an installing base; the testing chamber is arranged on the installing base, a bottom of the testing chamber has a through hole;.

In one of the embodiments, the locking structure includes a second power unit, a second transmission structure and a threaded rod; the threaded rod is arranged on the installing base and extends into the testing chamber through the through hole;
the interference structure includes a threaded hole disposed on a bottom of the measuring head and fitting the threaded rod; the second power unit is connected to the threaded rod by the second transmission structure, and configured to drive the threaded rod to screw into the threaded hole, thereby fixing the measuring head inside the testing chamber.

In one of the embodiments, the second transmission structure includes a second driving gear and a second driven gear; the second driven gear is rotatably arranged in the installing base; the second driven gear is connected to the threaded rod;
the second power unit is a second magnetic force rotation hand; the second magnetic force rotation hand is connected to the second driving gear by a second long rod; and the second driving gear meshes with the second driven gear.

In one of the embodiments, the second long rod is connected to the second driving gear by a second universal joint.

In one of the embodiments, the threaded rod includes a first part, a second part, and an elastic member; the first part is rod-shaped and includes a threaded portion at an upper end and a cylindrical portion at a lower end; position restricting surfaces are disposed on oppisite side walls of the cylindrical portion;.

In one of the embodiments, the in-situ testing device further includes a cold rod including an inner tube and an outer tube arranged concentrically; and.

In one of the embodiments, the in-situ testing device further includes a connecting board connected to the testing chamber, and the connecting board and the cooling component are provided with a plurality of third threaded holes corresponding to each other.

In one of the embodiments, the in-situ testing device further includes a second electrode adapter plate connected to one side of the connecting board, and a third electrode adapter plate is disposed on a side wall of the testing chamber and corresponds to the second electrode adapter plate.

In one of the embodiments, the in-situ testing device further includes a U-shaped wire combing rod arranged at a side of the third electrode adapter plate away from the second electrode adapter plate, and the U-shaped wire combing rod is configured to comb wires.

In one of the embodiments, the in-situ testing device further includes a first supporting member sleeved over the outer tube, and the first supporting member is configured to support the cold rod.

In one of the embodiments, the in-situ testing device further includes a connecting flange and a hollow linear propelling component, which are sleeved over the outer tube;.

In one of the embodiments, the in-situ testing device further includes a first adapter flange connected to the second end of the hollow linear propelling component away from the connecting flange; the cold rod is installed on the first adapter flange; and the hollow linear propelling component is connected to the cold rod through the first adapter flange.

In one of the embodiments, the in-situ testing device further includes a wiring tube sleeved over the outer tube, where one end of the wiring tube is connected to the first adapter flange, and another end of the wiring tube is welded to the outer tube;.

In one of the embodiments, the hollow linear propelling component includes an extendable-contractile tube, a support, a power structure, a third driving gear, a third driven gear, a threaded shaft, and a nut; the support is provided with a slide rail; a slide plate is slidaly disposed on the slide rail; the nut is arranged on the slide plate; the third driven gear is rotatably disposed on the support and connected to one end of the threaded shaft; another end of the threaded shaft is rotatably disposed in the nut;.

The beneficial effects of the present invention include:
The testing chamber of the in-situ testing device of the present invention is installed in an ultra-high vacuum test system. Before the sample is moved to a different test environment, the sample and the probe are placed in the measuring head, and the shielding door is opened by the drive mechanism. By means of the transportation device of the sample transport line in the ultra-high vacuum test system, the measuring head is placed into the testing chamber, so that the second optical observation hole of the measuring head is aligned with the first optical observation hole of the testing chamber. The sample is aligned with the probe by means of optical observation, and the preliminary test is performed to ensure that electrical properties are proper after the alignment; and then the measuring head is transported by the transportation device of the sample transport line to a designated position in a next testing environment. The in-situ testing device of the present invention provides the tester with a test platform for aligning the sample with the probe by means of optical observation and testing various electrical properties of the sample, which makes an automatic operation of the preliminary test of the sample possible. Thus, there is no need to take the sample out from the ultra-high vacuum test environment, which greatly reduces operation steps to be performed by the tester and improves test efficiency. Moreover, it is ensured that the sample is always in the vacuum environment during tests, thereby achieving a protection for surface properties of the sample.

In order to make the objectives, technical solutions and advantages of the present invention clearer and better understood, an in-situ testing device of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustration of the present invention, but not intended to limit the present invention.

Referring to <FIG> and <FIG>, in an embodiment of the present invention, the in-situ testing device <NUM> includes a measuring head <NUM>, a drive mechanism <NUM>, and a testing chamber <NUM>. The testing chamber <NUM> is arranged on a sample transport line of the ultra-high vacuum system. The testing chamber <NUM> is provided with a first optical observation hole <NUM>, and the measuring head <NUM> is provided with a second optical observation hole <NUM> whose position matches a position of the first optical observation hole <NUM>. The testing chamber <NUM> is provided with an opening allowing the measuring head <NUM> to pass through. The testing chamber <NUM> is further provided with a shielding door <NUM>, and the drive mechanism <NUM> is connected to the shielding door <NUM> and configured to drive the shielding door <NUM> to move relative to the testing chamber <NUM>, to open or cover the opening, thereby opening or closing the testing chamber <NUM>.

A shape of the testing chamber <NUM> can be various. For example, the testing chamber <NUM> is in a shape of a circular cylinder, a rectangle, a cube, or a cylinder with a semicircular cross section, etc. It can be understood that the testing chamber <NUM> can be a cylindrical structure with a semicircular cross section, which makes it convenient to arrange the shielding door <NUM> on the testing chamber <NUM>.

A position and a shape of the shielding door <NUM> can be various. For example, the shielding door <NUM> can be disposed on a side wall or on a top of the testing chamber <NUM>, only if the shielding door can allow the measuring head <NUM> to pass. In an embodiment, the shielding door <NUM> is L-shaped, that is, an opening is disposed both on the top and in the side wall of the testing chamber <NUM>. The shielding door <NUM> is configured to open or cover the opening, thereby opening or closing the testing chamber <NUM>, and enabling the measuring head <NUM> to enter and exit the testing chamber <NUM> from multiple angles.

The connection mode between the shielding door <NUM> and the testing chamber <NUM> can be various. For example, the shielding door <NUM> can be rotatably or slidably connected to the testing chamber <NUM>. The shielding door <NUM> can be provided with a door shaft, and the side wall of the testing chamber <NUM> can be provided with a bearing for fitting the door shaft.

The structure of the drive mechanism <NUM> can be various. For example, the drive mechanism <NUM> includes an electric extendable-contractile tube, an air cylinder or a hydraulic cylinder, etc. The the drive mechanism <NUM> can be disposed between the shielding door <NUM> and the testing chamber <NUM>, thereby realizing a movement of the shielding door <NUM> relative to the testing chamber <NUM>.

Referring to <FIG>, as an implementable embodiment, the drive mechanism <NUM> includes a first power unit <NUM> and a first transmission structure; the first power unit <NUM> is connected to the first transmission structure; and the first transmission structure is connected to the shielding door <NUM> and drives the shielding door <NUM>. The power output by the first power unit <NUM> is transmitted to the shielding door <NUM> by the first transmission structure, so that the shielding door <NUM> moves or rotates relative to the testing chamber <NUM>. In this case, during an actual application, the first power unit <NUM> can be disposed outside the ultra-high vacuum test system, to facilitate the operation of the tester. In this embodiment, a type of the first power unit <NUM> can be various. For example, the first power unit <NUM> can be a motor, a magnetic force rotation hand, and so on.

The structure of the first transmission structure can also be various. As an implementable embodiment, the first transmission structure includes a first driving gear <NUM> and a first driven gear <NUM>. The shielding door <NUM> is provided with a door shaft <NUM>, and the door shaft <NUM> is rotatably connected to the testing chamber <NUM>. The first driven gear <NUM> is sleeved over the door shaft <NUM>. The first power unit <NUM> is a first magnetic force rotation hand, and the first magnetic force rotation hand is connected to the first driving gear <NUM> through a first long rod <NUM>. The first driving gear <NUM> meshes with the first driven gear <NUM>. When the shielding door <NUM> needs to be opened or closed, the first magnetic force rotation hand drives the first long rod <NUM> to rotate, and the first long rod <NUM> drives the first driving gear <NUM> to rotate, thereby driving the first driven gear <NUM> meshing with the first driving gear <NUM> to rotate, and futher driving the door shaft <NUM> to rotate. The first transmission structure drives the shielding door <NUM> to open or close relative to the testing chamber <NUM>, which makes it convenient for the measuring head <NUM> to enter and exit the testing chamber <NUM>.

In an embodiment, the first long rod <NUM> can be connected to the first driving gear <NUM> through a first universal joint <NUM>. The first universal joint <NUM> connects the first long rod <NUM> to the first driving gear <NUM>, thus a deviation caused by transmission is absorbed.

In other implementations, the first transmission structure can include a transmission rod and two connecting rods; first ends of the two connecting rods are rotatably connected to each other, a second end of one connecting rod is rotatably connected to the shielding door <NUM>, and a seond end of another connecting rod is rotatably connected to the testing chamber <NUM>. The shielding door <NUM> is provided with the door shaft, and the door shaft is rotatably connected to the testing chamber <NUM>. One end of the transmission rod is rotatably connected to the rotatably connected first ends of the two connecting rods, and another end of the transmission rod is connected to the first power unit <NUM>. The first power unit <NUM> can be an electric extendable-contractile rod, a hydraulic cylinder, or an air cylinder, etc. When the shielding door <NUM> needs to be opened or closed, the first power unit <NUM> drives the transmission rod to move, thereby driving the two connecting rods to move, and further driving the shielding door <NUM> to rotate relative to the testing chamber <NUM>, so that the shielding door <NUM> opens or closes relative to the testing chamber <NUM>.

When the in-situ testing device <NUM> of each of the embodiments is specifically employed, the testing chamber <NUM> is installed in an ultra-high vacuum test system. Before the sample is moved to a different test environment, the sample and the probe are placed in the measuring head <NUM>, and the shielding door <NUM> is opened by the drive mechanism <NUM>. By means of the transportation device of the sample transportation line in the ultra-high vacuum test system, the measuring head <NUM> is placed into the testing chamber <NUM>, so that the second optical observation hole <NUM> of the measuring head <NUM> is aligned with the first optical observation hole <NUM> of the testing chamber <NUM>. The sample is aligned with the probe by means of optical observation, and the preliminary test is performed, to ensure that electrical properties are proper after the alignment; and then the measuring head <NUM> is transported by the transportation device of the sample transport line to a designated position in a next testing environment. The in-situ testing device <NUM> of the embodiments provides the tester with a test platform for aligning the sample with the probe by means of optical observation and testing various electrical properties of the sample, which makes an automatic operation of the preliminary test of the sample possible. Thus, there is no need to take the sample out from the ultra-high vacuum test environment, which greatly reduces operation steps to be performed by the tester and improves test efficiency. Moreover, it is ensured that the sample is always in the vacuum environment during tests, thereby achieving a protection for surface properties of the sample.

Referring to <FIG> and <FIG>, as an implementable embodiment, the in-situ testing device <NUM> further includes an installing base <NUM>; the testing chamber <NUM> is arranged on the installing base <NUM>; and a bottom of the testing chamber <NUM> has a through hole. A locking structure <NUM> is disposed on the installing base <NUM> and below the through hole of the testing chamber <NUM>. An interference structure (not shown in the figures) that fits the locking structure <NUM> is arranged on the measuring head <NUM>. The locking structure <NUM> fits the interference structure to fix the measuring head <NUM> inside the testing chamber <NUM>.

The structure of the locking structure <NUM> and the structure of the interference structure can be various. In an embodiment, the locking structure <NUM> includes a second power unit <NUM>, a second transmission structure, and a threaded rod <NUM>. The threaded rod <NUM> is arranged on the installing base <NUM> and can extend into the testing chamber <NUM> through the through hole. The interference structure includes a threaded hole disposed on the bottom of the measuring head <NUM> and fitting the threaded rod <NUM>. The second power unit <NUM> is connected to the threaded rod <NUM> by the second transmission structure, and configured to drive the threaded rod <NUM> to screw into the threaded hole, so that the measuring head <NUM> is fixed inside the testing chamber <NUM>.

The structure of the second power unit <NUM> can be various. For example, the second power unit <NUM> can be an electric motor, an air cylinder, or a hydraulic cylinder, etc. In an embodiment, the second power unit <NUM> is a second magnetic force rotation hand. The second transmission structure includes a second driving gear <NUM> and a second driven gear <NUM>. The second driven gear <NUM> is rotatably arranged in the installing base <NUM>, and the second driven gear <NUM> is connected to the threaded rod <NUM>. The second magnetic force rotation hand is connected to the second driving gear <NUM> by a second long rod <NUM>, and the second driving gear <NUM> meshes with the second driven gear <NUM>. Of course, the second transmission structure can also have another structure, only if it can drive the threaded rod <NUM> to screw into or out from the threaded hole.

In an embodiment, the threaded rod <NUM> includes a first part <NUM>, a second part <NUM>, and an elastic member <NUM>. The first part <NUM> is rod-shaped and includes a threaded portion at an upper end and a cylindrical portion at a lower end. Position restricting surfaces <NUM> are disposed on oppisite side walls of the cylindrical portion. The second part <NUM> is connected to the second driven gear <NUM>; the second part <NUM> has a receiving hole for receiving the cylindrical portion; and the elastic member <NUM> is disposed inside the receiving hole and abusts against the cylindrical portion. An insertion hole is disposed in a side wall of the receiving hole and penetrates the side wall thereof. A restricting member is configured to be inserted into the insertion hole and abuts against the position restricting surfaces <NUM>, thus preventing the first part <NUM> from rotating relative to the second part <NUM>. By means of the threaded rod <NUM> including the first part <NUM>, the second part <NUM>, and the elastic member <NUM>, it is possible to reduce damage to the screws of the threaded rod <NUM> and the threaded hole by alleviating the effects of external forces. By arranging the restricting member and the position restricting surfaces <NUM>, the first part <NUM> and the second part <NUM> can be prevented from rotating relatively, which facilitates the connection between the threaded rod <NUM> and the threaded hole. It can be understood that the restricting member can be a bolt, a pin, or the like.

In an embodiment, a bearing hole for receiving a bearing is disposed at an end of the second part <NUM>, and the end of the second part <NUM> is away from the first part <NUM>. The second part <NUM> is rotatably connected to the installing base <NUM> through a rotating bearing, so that, the second driven gear <NUM> can rotate more smoothly.

In addition, the second long rod <NUM> can be connected to the second driving gear <NUM> by a second universal joint <NUM>. The second universal joint <NUM> connects the second long rod <NUM> to the second driving gear <NUM>, thus a deviation caused by the transmission can be absorbed.

In other embodiments, the locking structure <NUM> can further include two electric extendable-contractile tubes, and the two electric extendable-contractile tubes are relatively disposed inside the testing chamber <NUM>. One end of each electric extendable-contractile tube is connected to an inner side wall of the testing chamber <NUM>, and another end of each electric extendable-contractile tube is provided with an arc-shaped pad for clamping the measuring head <NUM>. The lower end of the measuring head <NUM> can be provided with an annular groove for clamping each arc-shaped pad. When the measuring head <NUM> is placed into the testing chamber <NUM>, the two electric extendable-contractile tubes move towards the measuring head <NUM>, so that each arc-shaped pad is clamped in the annular groove disposed at the lower end of the measuring head <NUM>, and that the measuring head <NUM> can be fixed in the testing chamber <NUM> by the two arc-shaped pads.

Also referring to <FIG>, as an implementable embodiment, the in-situ testing device <NUM> further includes a first electrode adapter plate <NUM> arranged at the lower end of the measuring head <NUM>. The testing chamber <NUM> is provided with an electrode base <NUM> oppositely joined to the first electrode adapter plate <NUM>. To make it easier for the tester to quickly align the first electrode adapter plate <NUM> with the electrode base <NUM>, a plurality of grooves are asymmetrically disposed on the electrode base <NUM>, and a plurality of protrusions <NUM> respectively fitting the plurality of grooves are disposed at the lower end of the measuring head <NUM>. The plurality of grooves fit the plurality of protrusions <NUM>, so that the first electrode adapter plate <NUM> is aligned with the electrode base <NUM> to form an electrical connection.

Referring to <FIG>, <FIG> and <FIG>, as an implementable embodiment, the in-situ testing device <NUM> further includes a cold rod <NUM> and a cooling component <NUM>. The cold rod <NUM> includes an inner tube <NUM> and an outer tube <NUM> which are arranged concentrically, and the cooling component <NUM> is arranged at one end of the cold rod <NUM>. The inner tube <NUM> and the outer tube <NUM> communicate by means of the cooling component <NUM>. The cooling component <NUM> is connected to the testing chamber <NUM>. Another end of the cold rod <NUM>, which is away from the cooling component <NUM>, communicates with an external cooling device. The refrigerant flows into the inner tube <NUM> and flows out from the outer tube <NUM>, so as to reduce a temperature of the measuring head <NUM>. The temperature of the measuring head <NUM> is reduced by the cold rod <NUM>, so that the tester can adjust the temperature inside the testing chamber <NUM> according to the requirements of the experiment.

The connection manner between the cold rod <NUM> and the testing chamber <NUM> can be various. For example, the in-situ testing device <NUM> further includes a connecting board <NUM> connected to the testing chamber <NUM>. The connecting board <NUM> and the cooling component <NUM> are provided with a plurality of third threaded holes corresponding to each other. It can be understood that the connecting board <NUM> can also be provided with a fourth threaded hole for connecting the connecting board <NUM> to the testing chamber <NUM>. A connecting member (such as a screw, etc.) sequentially passes through one of the third threaded holes in the connecting board <NUM> and one of the third threaded holes in the cooling component <NUM> to realize the connection between the connecting board <NUM> and the cold rod <NUM>. The connecting member passes through the fourth threaded hole in the connecting board <NUM> to realize the connection between the connecting board <NUM> and the testing chamber <NUM>. So that, the connection between the cold rod <NUM> and the testing chamber <NUM> is achieved.

In an embodiment, the in-situ testing device <NUM> further includes a second electrode adapter plate <NUM> connected to one side of the connecting board <NUM>. A third electrode adapter plate <NUM> corresponding to the second electrode adapter plate <NUM> is provided on a side wall of the testing chamber <NUM>. The connecting board <NUM> not only facilitates the connection between the cold rod <NUM> and the testing chamber <NUM>, but also makes it easier to achieve a wire connection between the testing chamber <NUM> and an external device or between the testing chamber <NUM> and other components of the whole device by means of the second electrode adapter plate <NUM> and the third electrode adapter plate <NUM>.

Of course, a heat sink can be provided on the second electrode adapter plate <NUM>, and the heat sink can organize and cool the wires. The wires running from a room temperature environment are spirally wound on the cold rod <NUM> and then connected to the cooling component <NUM> of the cold rod <NUM>, and at this time, the temperature of the wires has not yet fallen to a required temperature. Part of the wires are bonded on the heat sink, and the heat sink is tightly attached to the cold rod <NUM>, thus better cooling the wires at this position, and ensuring that not too much heat is introduced into the testing chamber <NUM>. In addition, when the electrodes are disposed on the second electrode adapter plate <NUM> and the third electrode adapter plate <NUM>, the electrodes can be sleeved with insulating pads, which not only improves stability of the electrodes, but also avoids leakage of electricity.

In addition, in order to prevent the first transmission structure, namely the first driven gear <NUM> and the first driving gear <NUM>, from being entangled with the wires during operation, a U-shaped wire combing rod <NUM> for combing the wires is arranged at a side of the third electrode adapter plate <NUM>, and the side of the third electrode adapter plate <NUM> is away from the second electrode adapter plate <NUM>. Two ends of the U-shaped wire combing rod <NUM> can be connected to the third electrode adapter plate <NUM>. By arranging the U- shaped wire combing rod <NUM>, the wires can be supported, thereby preventing the wires from being entangled with the first driven gear <NUM> and the first driving gear <NUM>.

As an implementable embodiment, the in-situ testing device <NUM> further includes a first supporting member <NUM> sleeved over the outer tube <NUM>, and the first supporting member <NUM> is configured to support the cold rod <NUM>. It can be understood that the first supporting member <NUM> can also support the first long rod <NUM> and the second long rod <NUM>. The first supporting member <NUM> makes the positions of the first long rod <NUM>, the second long rod <NUM>, and the cold rod <NUM> relatively fixed, thus the cold rod <NUM>, the first long rod <NUM>, and the second long rod <NUM> move more stably and do not interfere with each other. In addition, in order to make the first long rod <NUM> and the second long rod <NUM> move more smoothly, the first supporting member <NUM> can be provided with a bearing for cooperating with the first long rod <NUM> and the second long rod <NUM>.

Referring to <FIG>, <FIG> and <FIG>, as an implementable embodiment, the in-situ testing device <NUM> further includes a connecting flange <NUM> and a hollow linear propelling component <NUM>, which are sleeved over the outer tube <NUM>. A first end of the connecting flange <NUM> is provided with a second supporting member <NUM>, and the second supporting member <NUM> is provided with a first rod hole allowing the cold rod <NUM> to pass. The first end of the connecting flange <NUM> is configured to connect an external fixed component. A first end of the hollow linear propelling component <NUM> is connected to a second end of the connecting flange <NUM>, and the second end of the connecting flange <NUM> is away from the second supporting member <NUM>. A second end of the hollow linear propelling component <NUM> is connected to the cold rod <NUM>. The hollow linear propelling component <NUM> is configured to drive the cold rod <NUM> to move, so as to drive the testing chamber <NUM> to move. It should be noted that the second supporting member <NUM> also has holes allowing the first long rod <NUM> and the second long rod <NUM> to pass. Moreover, the hollow linear propelling component <NUM> not only drives the cold rod <NUM> to move, but also drives the first long rod <NUM> and the second long rod <NUM> to move.

The hollow linear propelling component <NUM> is configured to drive the testing chamber <NUM> to move in the ultra-high vacuum test system, so that the measuring head <NUM> in the testing chamber <NUM> can move to a position above next test device, thereby making it easy for the transportation device of the sample transportation line in the ultra-high vacuum test system to transport the measuring head <NUM> to a designated position. The arrangement of the first supporting member <NUM> and the second supporting member <NUM> is conducive to improving smoothness of the movement of the testing chamber <NUM>.

When the in-situ testing device <NUM> is in operation, the connecting flange <NUM> is connected to an external fixed object (for example, an outer casing of the ultra-vacuum test system), and the testing chamber <NUM> is located in the ultra-vacuum test system. When the testing chamber <NUM> needs to be moved in the ultra-vacuum test system, the hollow linear propelling component <NUM> is driven to move. The first end of the hollow linear propelling component <NUM> is connected to the connecting flange <NUM>, and the connecting flange <NUM> is connected to the external fixed object, therefore the hollow linear propelling component <NUM> drives the cold rod <NUM>, the first long rod <NUM>, and second long rod <NUM> to move, thereby driving the testing chamber <NUM> to move.

In an embodiment, the in-situ testing device <NUM> further includes a first adapter flange <NUM> connected to the second end of the hollow linear propelling component <NUM>, the second end is away from the connecting flange <NUM>. The cold rod <NUM> is installed on the first adapter flange <NUM>, and the hollow linear propelling component <NUM> is connected to the cold rod <NUM> through the first adapter flange <NUM>. That is, the cold rod <NUM> is installed on the first adapter flange <NUM>, and the hollow linear propelling component <NUM> is also connected to the first adapter flange <NUM>. It can be understood that the first long rod <NUM> and the second long rod <NUM> can also be rotatably connected to the first adapter flange <NUM>. In this embodiment, the hollow linear propelling component <NUM> can drive the first adapter flange <NUM> to move, and further drive the cold rod <NUM>, the first long rod <NUM>, and the second long rod <NUM> to move, thereby driving the testing chamber <NUM> to move. In this case, the stability of the movement of the testing chamber <NUM> is improved, and the overall structure is more stable and reasonable.

In addition, the in-situ testing device <NUM> further includes a wiring tube <NUM> sleeved over the outer tube <NUM>. One end of the wiring tube <NUM> is connected to the first adapter flange <NUM>, and another end of the wiring tube <NUM> is welded to the outer tube <NUM>.

Multiple threading tubes <NUM> can be provided on the wiring tube <NUM>, and each threading tube <NUM> communicates with the wiring tube <NUM>. Moreover, an end of each threading tube <NUM>, which is away from the wiring tube <NUM>, is provided with a first small flange <NUM> to connect external devices. In this case, by means of the wiring tube <NUM> and the threading tubes <NUM>, various required external devices can be electrically connected to the in-situ testing device <NUM>.

Inner walls of the wiring tube <NUM>, the hollow linear propelling component <NUM>, the connecting flange <NUM>, and the first adapter flange <NUM> are all spaced from an outer wall of the outer tube <NUM> to form space for receiving the wires, which facilitate the wiring of the in-situ testing device <NUM>.

Referring to <FIG>, as an implementable embodiment, the hollow linear propelling component <NUM> includes an extendable-contractile tube <NUM>, a support <NUM>, a power structure <NUM>, a third driving gear <NUM>, a third driven gear <NUM>, a threaded shaft <NUM>, and a nut <NUM>. The support <NUM> is provided with a slide rail <NUM>; a slide plate <NUM> is slidaly disposed on the slide rail <NUM>; and the nut <NUM> is provided on the slide plate <NUM>. The third driven gear <NUM> is rotatably disposed on the support <NUM> and connected to one end of the threaded shaft <NUM>, and another end of the threaded shaft <NUM> is rotatably disposed in the nut <NUM>.

The power structure <NUM> is arranged on the support <NUM> and connected to the third driving gear <NUM> to drive the third driving gear <NUM> to rotate. The third driving gear <NUM> meshes with the third driven gear <NUM>. A moving process of the hollow linear propelling component <NUM> is as follows: the power structure <NUM> drives the third driving gear <NUM> to rotate, thereby driving the third driven gear <NUM> to rotate, forcing the nut <NUM> to move over the threaded shaft <NUM>, and further driving the slide plate <NUM> to move on the slide rail <NUM>.

Two ends of the extendable-contractile tube <NUM> each are provided with a second adapter flange <NUM>. One end of the extendable-contractile tube <NUM> is connected to the support <NUM> by one second adapter flange <NUM>, and another end of the extendable-contractile tube <NUM> is attached to the slide plate <NUM> by another second adapter flange <NUM>. The extendable-contractile tube <NUM> is sleeved over the outer tube <NUM>, and the two second adapter flanges <NUM> are connected to the connecting flange <NUM> and the first adapter flange <NUM> respectively.

When the testing chamber <NUM> needs to be moved, the power structure <NUM> drives the third driving gear <NUM> to rotate, thereby driving the third driven gear <NUM> to rotate, and further driving the threaded shaft <NUM> to rotate. The nut <NUM> is arranged on the slide plate <NUM>, and the slide plate <NUM> is slidably arranged on the slide rail <NUM> of the support <NUM>, therefore the nut <NUM> moves along the axial direction of the threaded shaft <NUM>, thereby forcing the slide plate <NUM> to move along the slide rail <NUM> of the support <NUM>, forcing the extendable-contractile tube <NUM> to expand and contract, and further driving the first adapter flange <NUM> to move relative to the connecting flange <NUM>, so that the cold rod <NUM> moves, and finally the testing chamber <NUM> moves in the ultra-vacuum test system.

The power structure <NUM> can include a hand wheel, and the hand wheel drives the third driving gear <NUM> to rotate. It can be understood that a positioning member <NUM> can be disposed at an output shaft of the hand wheel to control the rotation of the output shaft. When the hand wheel rotates and drives the testing chamber <NUM> to move to the designated position, the positioning member <NUM> keeps the hand wheel at a current position and not rotating. Of course, the power structure <NUM> can also be a stepper motor, and the stepper motor drives the third driving gear <NUM> to rotate. The stepper motor stops operating when the testing chamber <NUM> moves to the designated position.

Referring to <FIG> and <FIG>, as an implementable embodiment, the connecting flange <NUM> can also be provided with a pipe body <NUM> for observing, illuminating, or leading out signal lines. The pipe body <NUM> can be provided with a second small flange <NUM> for connecting external device.

As an implementable embodiment, the outer surface of the testing chamber <NUM> can also be provided with a sample transfer guiding groove <NUM>. The sample transfer guiding groove <NUM> is configured to cooperate with an external guide rail and functions as a guide during a transfer of the sample, thereby reducing the influence of processing errors of parts and the influence of shakes of the front end of the sample transfer rod when the sample is transferred over a long distance.

In the in-situ testing device <NUM> of the embodiments of the present invention, when it is necessary for the tester to test the sample in different test environments, or when the sample is to be placed in the test environment where the optical observation method cannot be adopted, the in-situ testing device <NUM> can be installed in the ultra-vacuum test system. The installation mode is various. For example, a square chamber can be specically made according to the requirements of those skilled in the art, and a plurality of flanges that communicate with other components in the ultra-vacuum test system can be arranged on the square chamber. The testing chamber <NUM> is placed inside the square chamber, and then the connecting flange <NUM> is fixedly connected to the square chamber, so that the testing chamber <NUM> is installed inside the square chamber. Testing equipement (such as the Dewar) with a different test environment is also installed in the square chamber and can be disposed below the testing chamber <NUM>. The sample transportation line of the ultra-vacuum test system is disposed above the testing chamber <NUM>.

Before the tester tests the sample, the sample and the probe can be placed inside the measuring head <NUM>. The hollow linear propelling component <NUM> drives the testing chamber <NUM> to move to a first position. The drive mechanism <NUM> opens the shielding door <NUM>; then the measuring head <NUM> is placed into the testing chamber <NUM>; then the drive mechanism <NUM> closes the shielding door <NUM>. The measuring head <NUM> is fixed in the testing chamber <NUM> by the locking structure <NUM>; at this time, the first optical observation hole <NUM> and the second optical observation hole <NUM> correspond to each other. The tester tests the sample and obtains related data by means of the optical observation method. After the test is completed, the hollow linear propelling component <NUM> drives the testing chamber <NUM> to move to a second position, that is, the testing chamber <NUM> is moved to a position above the testing equipment (such as the Dewar) with a different detecting environment. The drive mechanism <NUM> opens the shielding door <NUM>; the locking structure <NUM> releases the measuring head <NUM>; then the measuring head <NUM> is placed to the designated position of the testing equipement (such as the Dewar) having the different test environment by the transportation device in the ultra-vacuum test system.

Claim 1:
An in-situ testing device used in an ultra-high vacuum test system, characterized by comprising:
a testing chamber (<NUM>) installed in the ultra-high vacuum test system and arranged on a sample transport line of the ultra-high vacuum system, the testing chamber (<NUM>) being provided with a first optical observation hole (<NUM>) and with a shielding door (<NUM>) rotatably or slidably connected to the testing chamber (<NUM>);
a measuring head (<NUM>) being connectable to the testing chamber (<NUM>) and insertable into the testing chamber (<NUM>) by a transport device of the sample transport line, the measuring head (<NUM>) being provided with a second optical observation hole (<NUM>) such that the position of the second observation hole (<NUM>) is aligned with a position of the first optical observation hole (<NUM>) when the measuring head (<NUM>) is placed into the testing chamber (<NUM>), the testing chamber (<NUM>) being provided with an opening allowing the measuring head (<NUM>) to pass;
a drive mechanism (<NUM>) connected to the shielding door (<NUM>), and configured to drive the shielding door (<NUM>) to move relative to the testing chamber (<NUM>), to open or cover the opening, thereby opening or closing the testing chamber (<NUM>);
a sample and a probe being placed in the measuring head (<NUM>), the sample being aligned with the probe by means of optical observation, wherein the in-situ testing device is configured to perform a preliminary test to ensure that electrical properties of the sample are proper after the alignment; and
a first electrode adapter plate (<NUM>) arranged at a lower end of the measuring head (<NUM>); and wherein:
the testing chamber (<NUM>) is provided with an electrode base (<NUM>) oppositely joined to the first electrode adapter plate (<NUM>);
a plurality of grooves are asymmetrically disposed on the electrode base (<NUM>);
a plurality of protrusions (<NUM>) respectively fitting the plurality of grooves are disposed at the lower end of the measuring head (<NUM>);
the plurality of grooves fit the plurality of protrusions (<NUM>); and
the first electrode adapter plate (<NUM>) is aligned with the electrode base (<NUM>).