SAMPLE CRUSHER

A sample crusher, including a main body housing and an electric motor arranged in the main body housing. A swing mechanism is further arranged in the main body housing. The swing mechanism includes a transmission shaft, a swing disk for allowing a grinding tube to be placed thereon, and a circumferential limiting component. The transmission shaft is driven by the electric motor to rotate, an obliquely arranged bearing is sleeved on the transmission shaft, an included angle is formed between an axis of the bearing and an axis of the transmission shaft, the swing disk is mounted on the bearing, the swing disk and the bearing are concentrically arranged, and the swing disk is connected to the circumferential limiting component.

TECHNICAL FIELD

The present application belongs to the technical field of test devices, and particularly relates to a sample crusher.

BACKGROUND

At present, most drugs are excreted through urination. Usually, it is only necessary to collect urine of a subject as a specimen to be tested, and the way of using the urine as a test sample is low in cost and simple in operation, but it has certain privacy and the possibility of fraud. In addition, the urine sample can only reflect drug abuse of a drug abuser in recent days, and must be collected in a timely manner. Moreover, blood is also a commonly used drug test sample which contains high concentrations of drugs and metabolites, so blood is an ideal material. However, the blood can only reflect drug abuse in recent days or even several hours. If the blood contains infectious disease viruses, sampling is dangerous. Furthermore, saliva, which is also frequently used as a sample for drug testing, is convenient to collect, and a collection device is simple and easy to purify. However, as a sample, the saliva has a short testing time window, is prone to contamination, and has low test sensitivity to some drugs.

Hair samples can overcome the defects of many liquid samples: first, they can be stored simply at normal temperature in dark for several years; second, drug abuse in the last several months or even in the last six months is traceable; and third, the test materials are simple to take and difficult to adulterate.

When the hair is used as a test sample for testing and analysis, it is necessary to first treat the test sample, such as by grinding and crushing, to extract components of the sample before testing. With regard to a gold standard test method for hair samples, an LC-MS/MS test method is currently the commonly used method accepted by the administration of justice and the labor market. A main process of the method includes the steps of washing, drying, grinding, ultrasonic dissolution, extraction, machine operation, etc. The operation process of the method is extremely complex, requiring a large-scale liquid chromatography-mass spectrometry instrument, a large site, and professional personnel. The results come out slowly, and the method is incapable of carrying out rapid analysis and instant testing on test samples after crushing treatment, and is therefore not suitable for streamlined operations.

SUMMARY

An objective of the present application is to provide a sample crusher, which enables a sample treated by the sample crusher to be used for instant testing, has an effectively shortened test time and an increased test rate of test samples, allows for easy testing and analysis of the test sample, and can meet screening requirements and facilitate widespread use.

A technical solution thereof is as follows:a sample crusher, comprising a main body housing and an electric motor arranged in the main body housing, a swing mechanism being further arranged in the main body housing, wherein the swing mechanism comprises a transmission shaft, a swing disk for allowing a grinding tube to be placed thereon, and a circumferential limiting component; and the transmission shaft is driven by the electric motor to rotate, an obliquely arranged bearing is sleeved on the transmission shaft, an included angle is formed between an axis of the bearing and an axis of the transmission shaft, the swing disk is mounted on the bearing, the swing disk and the bearing are concentrically arranged, and the swing disk is connected to the circumferential limiting component.

In an embodiment, the sample crusher further comprises a damping mechanism arranged in the main body housing, wherein the damping mechanism comprises a supporting plate, a first spring set and a second spring set; the electric motor is mounted on the supporting plate; the first spring set is located between the bottom of the supporting plate and the bottom of the main body housing and is capable of providing an upward elastic force to the supporting plate; and the second spring set is connected to the first spring set and is capable of providing a downward elastic force to the supporting plate.

In an embodiment, the first spring set has an elastic coefficient greater than that of the second spring set, the elastic coefficient of the first spring set is 0.6-1.5 kgf/mm, and the elastic coefficient of the second spring set is 0.03-0.2 Kgf/mm.

In an embodiment, the damping mechanism further comprises a support body; the support body comprises a first connecting portion passing through the supporting plate and connected to the first spring set, and an acting portion at the end away from the first spring set; the acting portion extends beyond the supporting plate; the second spring set is sleeved on the support body; and the second spring set is connected to the acting portion at one end, and is connected to the supporting plate at the other end.

In an embodiment, a connecting plate is arranged at the end of the first spring set close to the supporting plate, a second connecting portion is arranged in the middle of the connecting plate and is internally provided with an internal thread, the first connecting portion of the support body is provided with an external thread adapted to the second connecting portion, and the support body is threadedly connected to the connecting plate.

In an embodiment, the circumferential limiting component comprises a mounting portion and a plurality of limiting portions, the mounting portion is integrally formed with the plurality of limiting portions, the circumferential limiting component is mounted on the electric motor by means of the mounting portion, and each of the plurality of limiting portions is connected to the swing disk.

In an embodiment, the mounting portion is arranged in the form of a ring, each of the plurality of limiting portions is bar-shaped, and each of the plurality of limiting portions is integrally connected to an edge of the mounting portion, and is arranged along the edge of the mounting portion and extends radially toward the outside.

In an embodiment, the end of the limiting portion connected to the swing disk has a width greater than that of the portion of the limiting portion extending along the edge of the mounting portion.

In an embodiment, a first connecting lug and a second connecting lug are arranged on the end of the limiting portion connected to the swing disk, and the first connecting lug and the second connecting lug respectively extend toward two sides of the limiting portion.

In an embodiment, a first connecting hole is formed in the mounting portion, a second connecting hole is formed in the first connecting lug, the first connecting hole is arranged flush with the second connecting hole in an extending direction of the limiting portion, a distance between the first connecting hole and the second connecting hole is in a range of 65-85 mm, and an included angle of 5° to 9° is formed between the axis of the bearing and the axis of the transmission shaft.

In an embodiment, a first connecting hole is formed in the mounting portion, a second connecting hole is formed in the first connecting lug, the first connecting hole is arranged flush with the second connecting hole in an extending direction of the limiting portion, a distance between the first connecting hole and the second connecting hole is in a range of 80-105 mm, and an included angle of 16° to 25° is formed between the axis of the bearing and the axis of the transmission shaft.

In an embodiment, the plurality of limiting portions comprise at least a first limiting portion, a second limiting portion and a third limiting portion which are all arranged at the edge of the mounting portion.

In an embodiment, an included angle of 115° to 120° is formed between two adjacent limiting portions.

In an embodiment, the circumferential limiting component is made of a flexible material, the swing disk is located above the electric motor, the end of the limiting portion close to the mounting portion is configured to be bent upwardly, and the end of the limiting portion connected to the swing disk is configured to be bent inwardly toward the side close to the swing disk.

In an embodiment, the sample crusher further comprises a main body upper cover, wherein a lock-catch switch is arranged between the main body upper cover and the main body housing, and is connected to a control circuit of the electric motor.

In an embodiment, the lock-catch switch comprises a lock structure and a catch structure adapted to the lock structure, the lock structure is mounted on the main body housing, the catch structure is mounted on the main body upper cover at a position corresponding to the lock structure, the lock structure is provided with a first contact point in communication with the control circuit, and the catch structure is provided with a second contact point in communication with the control circuit.

In an embodiment, the sample crusher further comprises a main body upper cover, wherein a contact switch is arranged between the main body upper cover and the main body housing, and is in communication with a control circuit of the electric motor.

In an embodiment, the contact switch is mounted on an inner side of the main body upper cover, and a trigger block is arranged in the main body housing at a position corresponding to the contact switch, or the contact switch is mounted on an inner side of the main body housing, and a trigger block is arranged in the main body upper cover at a position corresponding to the contact switch.

According to the sample crusher provided by the present application, by sleeving the obliquely arranged bearing on the transmission shaft, mounting the swing disk on the bearing and concentrically arranging the swing disk and the bearing, when the electric motor drives the transmission shaft to rotate, the bearing is driven to rotate synchronously, the swing disk swings up and down while the circumferential limiting component limits a circumferential rotation of the swing disk, grinding beads in the grinding tube placed on the swing disk rapidly grind a test sample, and a screening result can be displayed while instantly testing a liquid mixture of the ground test sample. The sample crusher can effectively increase the analysis rate of test samples, make a test operation easier, easily test and analyze the test samples, meet screening requirements, and facilitate popularization and widespread use.

LIST OF REFERENCE SIGNS

DETAILED DESCRIPTION

For ease of understanding the present application, specific embodiments of the present application will be described in detail with reference to the accompanying drawings.

Unless specifically stated or otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs. In the case of combining the technical solution of the present application with a real scene, all the technical and scientific terms used herein may also have the meanings corresponding to the purpose of achieving the technical solution of the present application.

Unless specifically stated or otherwise defined, the terms “first, second, . . . ” used herein are merely intended to distinguish names and do not represent the specific number or order.

Unless specifically stated or otherwise defined, the term “and/or” used herein includes any and all combinations of one or more related listed items.

It should be noted that when an element is said to be “fixed to” another element, it may be directly fixed to the other element or an intervening element may be present. When an element is said to be “connected” to another element, it may be directly connected to the other element or an intervening element may be also present. When an element is said to be “mounted on” another element, it may be directly mounted on the other element or an intervening element may be also present. When an element is said to be “arranged at” another element, it may be directly arranged at the other element or an intervening element may be also present.

Unless specifically stated or otherwise defined, the term “said” or “the” used herein refers to the technical feature or technical content that is previously mentioned or described in a corresponding position, and the technical feature or technical content may be the same as or similar to the technical feature or technical content referred to.

Undoubtedly, the technical contents or technical features that are contrary to the purpose of the present application or are obviously contradictory should be excluded.

As shown inFIGS.1-3, a sample crusher comprises a main body housing10made of a plastic material and an electric motor11mounted in the main body housing10. A swing mechanism is further arranged in the main body housing10. The swing mechanism comprises a transmission shaft20, a swing disk21for allowing a grinding tube to be placed thereon, and a circumferential limiting component22. The transmission shaft20is driven by the electric motor11to rotate, an obliquely arranged bearing23is sleeved on the transmission shaft20, and an included angle of 3° to 25° is formed between an axis of the bearing23and an axis of the transmission shaft20. In this embodiment, an included angle of 5° to 9° (or 16° to 25°) may be selected. The swing disk21is mounted on the bearing23, the swing disk21and the bearing23are concentrically arranged, and the swing disk21is connected to the circumferential limiting component22. By means of the above arrangement, when the electric motor11drives the transmission shaft20to rotate, the bearing23is driven to rotate synchronously, and the bearing23drives the swing disk21to swing up and down while the circumferential limiting component22limits a circumferential rotation of the swing disk21. Grinding beads in the grinding tube placed on the swing disk21perform rapid grinding on a test sample, and after grinding and crushing treatment, a liquid mixture of the test sample in the grinding tube can be tested by using a colloidal gold method, an immunofluorescence method, a chemiluminescence immunoassay method, etc., and a screening result can then be displayed. By using the sample crusher, the analysis rate of test samples can be effectively increased, a test duration can be shortened, a test operation is easier than other test sample testing methods, the test samples (bone, keratin or hair, etc.) are easy to test and analyze, the cost of a single test is lower, the screening requirements can be met, and widespread use is facilitated.

As shown inFIGS.2-5, the sample crusher provided by the present application further comprises a damping mechanism30arranged in the main body housing10. The damping mechanism30comprises a supporting plate33, a first spring set31and a second spring set32. The electric motor11is mounted on the supporting plate33, the first spring set31is located between the bottom of the supporting plate33and the bottom of the main body housing10and can provide an upward elastic force to the supporting plate33, and the second spring set32is connected to the first spring set31and can provide a downward elastic force to the supporting plate33. The first spring set31has an elastic coefficient greater than that of the second spring set32, the elastic coefficient of the first spring set31is in a range of 0.6-1.5 kgf/mm, and the elastic coefficient of the second spring set32is in a range of 0.03-0.2 Kgf/mm. At a starting moment of the crusher, a deflection vibration is serious, the supporting plate33is partially tilted upwardly, and the second spring set32provides the downward elastic force to the supporting plate33and does work on the supporting plate33, reducing a vibration intensity at the starting moment of the crusher. When the crusher operates smoothly, the first spring set31provides the upward elastic force to the supporting plate33and does work on the supporting plate33, reducing the vibration intensity when the crusher operates smoothly. The first spring set31and the second spring set32are arranged on the supporting plate33, and the first spring set31and the second spring set32are adapted to a change in the center of gravity of the crusher, so that the vibration and displacement of the crusher are avoided, and noise generated during the vibration of the crusher is also avoided. In addition, the arrangement of the first spring set31and the second spring set32can greatly decrease the weight of the supporting plate33, and accordingly the effect of decreasing the weight of the crusher is achieved.

The damping mechanism30further comprises a support body34. In this embodiment, the support body34is in the shape of a rod, and the support body34comprises a first connecting portion341passing through the supporting plate33and connected to the first spring set31, and an acting portion342at the end away from the first spring set31. The acting portion342extends beyond the supporting plate33, the acting portion342is an acting block fixed to the support body34, the second spring set32is sleeved on the support body34, and the second spring set32is connected to the acting portion342at one end, and is connected to or abuts against an upper surface of the supporting plate33at the other end. By means of the above arrangement, the second spring set32is arranged at the upper surface of the supporting plate33and can accordingly provide the downward elastic force to the supporting plate33. At the starting moment of the crusher, the second spring set32is compressed between the supporting plate33and the acting portion342of the support body34to provide the downward elastic force to the supporting plate33and to do work on the supporting plate33, so that the second spring set32can adapt to the change in the center of gravity of the crusher at the starting moment.

A connecting plate311is fixed at the end of the first spring set31close to the supporting plate33, the connecting plate311and the first spring set31may be of an integrally formed structure, a second connecting portion312is arranged in the middle of the connecting plate311, the second connecting portion312is internally provided with an internal thread, the first connecting portion341of the support body34is provided with an external thread adapted to the second connecting portion312, and the support body34is threadedly connected to the connecting plate311. By means of the threaded connection between the support body34and the connecting plate311, the support body34is convenient to mount and dismount. In this embodiment, the second connecting portion312extends and protrudes toward the side of the connecting plate311away from the supporting plate33, the internal thread is configured to extend toward the protruding side of the second connecting portion312, and the first connecting portion341has a length greater than that of the second connecting portion312. When the first connecting portion341and the second connecting portion312are fully connected to each other, the first connecting portion341extends beyond the second connecting portion312, so that the reliability of connection between the support body34and the first spring set31can be improved.

The support body34is further provided with a smooth rod portion343. The smooth rod portion343is located between the first connecting portion341and the acting portion342, and there is a gap between the smooth rod portion343and the supporting plate33. The middle portion of the support body34which passes through the supporting plate33and connected to the first spring set31is the smooth rod portion343, the arrangement of the smooth rod portion343facilitates the movement of the support body34in the supporting plate33, and the gap between the smooth rod portion343and the supporting plate33prevents the smooth rod portion343from directly abutting against the supporting plate33, so that the support body34is prevented from generating a frictional force during the movement, and the movement of the support body34is facilitated.

The smooth rod portion343has a diameter greater than that of the first connecting portion341, and when the first connecting portion341and the second connecting portion312are fully connected to each other, the end of the smooth rod portion343close to the connecting plate311abuts against the connecting plate311and is fastened to the connecting plate311, and the connection strength between the support body34and the first spring set31is then increased, so that the support body34is less likely to be disconnected from the first spring set31during the vibration of the crusher.

A flexible gasket35is arranged between the supporting plate33and the first spring set31, and the support body34passes through the flexible gasket35and is connected to the connecting plate311of the first spring. The arrangement of the flexible gasket35allows transition from rigid abutment to flexible abutment between the supporting plate33and the connecting plate311, and thus facilitates the reduction of abrasion between the supporting plate33and the connecting plate311while reducing noise caused by collision between the supporting plate33and the connecting plate311during the starting of the crusher.

The flexible gasket35is made of a silica gel material, and there is a gap between the smooth rod portion343of the support body34and the flexible gasket35. By means of the above arrangement, the support body34is prevent from abutting against the flexible gasket35during the movement, so that the generation of frictional force is avoided during the movement of the support body34, and the movement of the support body34is then facilitated.

As shown inFIG.5, in this embodiment, the supporting plate33has four corners, four first spring sets31and four second spring sets32are provided, the four first spring sets31are respectively mounted to the four corners of the supporting plate33, and the four second spring sets32are arranged corresponding to the first spring sets31on a one-to-one basis. By arranging the first spring sets31and the second spring sets32in the above manner, the supporting plate33is more uniformly subjected to the elastic forces of both the spring sets, and a damping effect of the crusher is further improved.

As shown inFIG.6, the circumferential limiting component22comprises a mounting portion221and a plurality of limiting portions, the mounting portion221is integrally formed with the plurality of limiting portions, the circumferential limiting component22is mounted on the electric motor11by means of the mounting portion221, and each of the plurality of limiting portions is connected to the swing disk21. By arranging the plurality of limiting portions, multi-point limiting is achieved, and the limiting effect of the circumferential limiting component22on the swing disk21is improved, so that the swing disk21is effectively prevented from being prone to rotation due to the influence of the rotation of the transmission shaft, and the influence on a reciprocating swing motion of the swing disk21is then avoided. The integral formation of the mounting portion221and the plurality of limiting portions facilitates the increase of the overall toughness of the circumferential limiting component22, so that the circumferential limiting component22is less likely to break when the swing disk21is pulled to rotate.

The mounting portion221is arranged in the form of a ring, each of the plurality of limiting portions is bar-shaped, and each of the plurality of limiting portions is integrally connected to an edge of the mounting portion221, and is arranged along the edge of the mounting portion221and extends radially toward the outside. The bottom of the swing disk21is mounted and connected to the bearing23, and each of the plurality of limiting portions is connected to the bottom of the swing disk21. The mounting portion221arranged in the form of a ring is sleeved on the transmission shaft20and is then fixedly mounted on a housing of the electric motor11by means of a bolt, the end of each of the plurality of limiting portions connected to the swing disk21is connected to the bottom of the swing disk21by means of a bolt, the mounting of the circumferential limiting component22is then completed, and an internal space of the crusher can be saved in the above mounting manner.

The end of the limiting portion connected to the swing disk21has a width greater than that of the portion of the limiting portion extending along the edge of the mounting portion221. By increasing the width of the end of the limiting portion connected to the swing disk21, a contact area between the limiting portion and the swing disk21is increased, which facilitates the increase of the limiting strength of the circumferential limiting component22on the swing disk21.

The end of the limiting portion away from the mounting portion221is provided with an arc-shaped notch bent inwardly toward the end close to the mounting portion221. In this embodiment, the bottom of the swing disk21is in a cylindrical shape, and the notch is configured to be in an arc shape corresponding to a side wall of the bottom of the swing disk21, so that the limiting portion is attached to or close to the side wall of the swing disk21and is then connected to the swing disk21, which facilitates the mounting of the circumferential limiting component while increasing the limiting strength of the circumferential limiting component on the swing disk21.

A first connecting lug225and a second connecting lug226are arranged on the end of the limiting portion connected to the swing disk21, and the first connecting lug225and the second connecting lug226respectively extend toward two sides of the limiting portion. The arrangement of the two connecting lugs facilitates the increase of the connection strength between the limiting portion and the swing disk21and therefore the increase of a degree of stress between the limiting portion and the swing disk21, and also facilitates the increase of the limiting strength of the circumferential limiting component22on the swing disk21.

The mounting portion221of the circumferential limiting component22is provided with first connecting holes227, bolts60pass through the first connecting holes227to connect and fix the mounting portion221to the electric motor11, the connecting lugs are provided with second connecting holes228, and bolts60pass through the second connecting holes228to connect and fix the connecting lugs to the swing disk21. Each first connecting hole227is arranged flush with the respective second connecting hole228in extending direction of the respective limiting portion, and a distance between the first connecting hole227and the second connecting hole228is in a range of 65-105 mm, namely, the effective size range of the circumferential limiting component22is 65-105 mm. By rationally designing the positions of the connecting holes, the circumferential limiting component22can effectively limit the rotation of the swing disk21. In an embodiment, when an included angle of 5° to 9° is formed between the axis of the bearing and the axis of the transmission shaft, the effective size range of the circumferential limiting component is selected to be 65-85 mm. In another embodiment, when an included angle of 16° to 25° is formed between the axis of the bearing and the axis of the transmission shaft, the effective size range of the circumferential limiting component is selected to be 80-105 mm. By matching the effective size of the circumferential limiting component with the included angle formed between the axis of the bearing and the axis of the transmission shaft in the above two embodiments, the crusher can achieve a better effect in operation.

It should be noted that a controller (not shown) is further arranged in the main body housing and configured to control parameters such as a rotation speed and a frequency of the electric motor. Programs in the controller are set with different parameters for the circumferential limiting components of different sizes, and specific parameter ranges are as follows. The rotation speed is 2,800-3,200 rpm; and a crushing time is 20-40 seconds, and the number of crushing cycles is 3-8.

In this embodiment, three limiting portions are provided, comprising a first limiting portion222, a second limiting portion223and a third limiting portion224. The first limiting portion222, the second limiting portion223and the third limiting portion224are all arranged at the edge of the mounting portion221. By arranging the three limiting portions, three limiting points are formed for the swing disk21, and the limiting strength of the circumferential limiting component22on the swing disk21is increased, so that the swing disk21is less likely to be affected by the rotation of the bearing23, and normal swing of the swing disk21is facilitated.

An included angle of 120° is formed between two adjacent limiting portions. Stresses between the three limiting portions of the circumferential limiting component22and the swing disk21are uniform, the limiting strength of the circumferential limiting component22on the swing disk21is further increased, and the circumferential limiting component22is also less likely to break due to non-uniform local stresses, which facilitates the prolonging of the service life of the circumferential limiting component22.

The circumferential limiting component22is made of a flexible material, the swing disk21is located above the electric motor11, the end of the limiting portion close to the mounting portion221is configured to be bent upwardly, and the end of the limiting portion connected to the swing disk21is configured to be bent inwardly toward the side close to the swing disk21. By means of the above arrangement, it is avoided that the circumferential limiting component22affects the normal movement of the swing disk21, and normal grinding of the test sample is facilitated.

As shown inFIGS.1and7, the sample crusher provided by the present application further comprises a main body upper cover40connected to the main body housing10. A lock-catch switch50is arranged between the main body upper cover40and the main body housing10, and the lock-catch switch50is connected to a control circuit of the electric motor11. By means of the above arrangement, when the main body upper cover is closed, the lock-catch switch50can achieve a locking function of the crusher, avoid the direct exposure of the swing mechanism, prevent the damage to a user who otherwise accidentally touches the swing mechanism, and can protect the internal structure of the crusher. In addition, ON/OFF of the control circuit of the electric motor11can also be controlled, the control circuit is in a disconnected state when the lock-catch switch50is turned on; and the control circuit is in a connected state when the lock-catch switch50is turned off, so that when the cover of the crusher is opened, a protective effect is provided, avoiding accidents such as electric shock, and a safety factor of the crusher is thus improved. The lock-catch switch50comprises a lock structure and a catch structure adapted to the lock structure. The lock structure is mounted on the main body housing10, the catch structure is mounted on the main body upper cover40at a position corresponding to the lock structure, the lock structure is provided with a first contact point (not shown) in communication with the control circuit, and the catch structure is provided with a second contact point (not shown) in communication with the control circuit. By means of the above arrangement, when the main body upper cover40is closed, the locking structure cooperates with the catch structure to lock the main body upper cover40, and the first contact point is in communication with the second contact point to achieve connection of the control circuit. When the main body upper cover40is opened, the lock structure is separated from the catch structure, and the first contact point is disconnected from the second contact point to achieve disconnection of the control circuit, thereby achieving the protective effect during cover opening.

As shown inFIG.7, the catch structure comprises a first mounting plate53and a catch body51. The first contact point is located on the catch body51, one side of the first mounting plate53is fixedly connected to the catch body51, and the side of the first mounting plate53away from the catch body51is connected to the main body upper cover40. The lock structure comprises a second mounting plate54and a lock body52. The second contact point is located on the lock body52, one side of the second mounting plate54is connected to the lock body52, and the side of the second mounting plate54away from the lock body52is connected to the main body housing10. The catch body51is mounted to the main body upper cover40by means of the first mounting plate53, the lock body52is mounted to the main body housing10by means of the second mounting plate54, so that the mounting of the lock-catch switch50is achieved.

The lock body52is provided with a receiving cavity521for receiving the catch body51, and the side of the receiving cavity521close to the catch body51is configured to be open. When the main body upper cover40is closed, the catch body51is inserted into the receiving cavity521of the lock body52to prevent the catch body51and the lock body52from being directly exposed, and to prevent short circuiting caused by contact with the internal structure of the crusher, thereby providing a protection function.

In an embodiment, the lock-catch switch50is replaced by a contact switch (not shown) which is arranged between the main body upper cover40and the main body housing10. The contact switch is connected to the control circuit of the electric motor11. When the main body upper cover40is closed, the contact switch is turned on and connected to the control circuit, and the electric motor can be started normally. When the main body upper cover40is opened, the contact switch is turned off, causing the control circuit to be disconnected, the electric motor to be powered off, and the swing mechanism to stop swinging, and accordingly a power-off protection function of the crusher cover opening is achieved.

The contact switch is mounted on an inner side of the main body upper cover and a first trigger block (not shown) is mounted in the main body housing10at a position corresponding to the contact switch. When the main body upper cover40is closed, the first trigger block abuts against the contact switch and activates the contact switch to make the control circuit connected, and the electric motor11can be started normally. When the main body upper cover40is opened, the first trigger block is separated from the contact switch, the contact switch is simultaneously turned off, and the control circuit is disconnected, so that the protection function is achieved during cover opening.

It should be noted that mounting positions of the contact switch and the trigger block can be adjusted according to actual requirements. In an embodiment, the contact switch is mounted on the inner side of the main body housing10, and a second trigger block is mounted in the main body upper cover40at a position corresponding to the contact switch, with the second trigger block having the same function as the first trigger block.

It should also be noted that using the lock-catch switch50is an optional embodiment of the present application. In addition to the lock-catch switch50and the contact switch, a magnetic control manner or the like may be used to achieve the power-off protection function of the crusher during cover opening.

A movable connector70is further mounted between the main body upper cover40and the main body housing10. The movable connector70comprises a first connecting side71and a second connecting side72. The first connecting side71is articulated to the second connecting side72, the first connecting side71is connected to an outer wall of the main body upper cover40, the second connecting side72is connected to an outer wall of the main body housing, and the movable connector70is located at the end of the main body housing10away from the lock-catch switch50. By means of the above arrangement, the articulation between the main body upper cover40and the main body housing10is achieved, so that an operation of closing or opening the main body upper cover40is more convenient.

The sample crusher provided by the present application can rapidly analyze the test sample, enables a convenient test operation, has a lower cost for a single test, can meet the screening requirements, and can be widely used. The first spring set31and the second spring set32are adapted to the change in the center of gravity of the crusher, so that the vibration and displacement of the crusher are avoided, and the noise generated during the vibration of the crusher is also avoided. The circumferential limiting component22provided with the plurality of limiting portions improves the limiting effect of the circumferential limiting component22on the swing disk21, prevents the swing disk21from rotating more effectively, and avoids the influence on the reciprocating swing motion of the swing disk21. By arranging the lock-catch switch50, not only a locking function of the main body upper cover40of the crusher can be achieved, but also the protection function can be achieved during cover opening by controlling the connection/disconnection of the control circuit of the electric motor11.

A hair sample is mixed with a sample pretreatment reagent and grinding beads, etc. for testing the hair sample, and the mixture is subjected to shaking and crushing with the sample crusher described in the present application to obtain a liquid to be tested. The liquid to be tested is tested by using a colloidal gold method, an immunofluorescence method, a chemiluminescence immunoassay method, etc. so as to obtain a test result.