Patent Description:
The present disclosure relates to the technical field of passenger trains, and in particular to a multiple-unit train and a pilot device of the multiple-unit train.

With the development of society, people travel more and more frequently and have higher and higher requirements for the safety of multiple-unit trains.

A pilot is mounted in a lower part of the underframe of the locomotive of the multiple-unit train, which meets the strength requirements. If there are protruding foreign objects on the rail, the foreign objects can be removed from the rail by collision to protect the safe operation of the multiple-unit train. However, the existing pilot has disadvantages. The main structure of the pilot is assembled with the welding structure of the underframe by bolts, and the height of the pilot is not adjustable. The height of the lower plane of the pilot is about <NUM> from the rail surface. The mounting position is relatively high, and the pilot effect is limited, which does not meet the safety requirements of the existing multiple-unit trains. However, if the mounting height of the pilot is too low, as the train runs and the wheel tread is turning repaired, the height of the pilot will decrease, and the pilot may even enter the construction boundary and the pilot will collide with the protruding construction in the rail. The pilot is required to have certain strength to remove the obstructions in the rail. However, in order to meet the collision safety requirements, the strength of the pilot should not be too high. During the collision of the trains, the mounting bolts of the pilot are required to be sheared off, so as to ensure that the anti-climbing energy-absorbing structures of the trains contact with each other and absorb energy.

<CIT> discloses a universal modular obstacle remover for rail transit vehicles, and the remover comprises an obstacle removing body for removing obstacles at the front end of the vehicle body during operation, and a plurality connecting assembles detachably connected with the front end of the vehicle body and the obstacle removing body at both ends, wherein the connecting portions of the connecting assemblies and the obstacle removing body are adjustable in the width direction of the vehicle body. <CIT> discloses a rail vehicle with a snow plow. The snow plow has two blade plates that run to a point and a plow blade arranged vertically adjustably behind the blade plates. A projecting portion of the plow blade that projects downwards beyond a lower edge of the blade plates is adjustable. The blade plates rest with their lower edge on a base plates which forms a cutting edge that protrudes from the lower edge in the direction of travel. The snow plow is attached to an under frame of the vehicle body such that the base plate maintains a safety distance from the travel rails. It should be noted herein that the technical content provided in this section is intended to help those skilled in the art to understand the present disclosure, and may not necessarily constitute the prior art.

In view of this, an object of the present disclosure is to provide a pilot device of a multiple-unit train to improve the safety of the pilot. A multiple-unit train is further provided according to the present disclosure.

In order to achieve the above object, a pilot device of a multiple-unit train is provided according to claim <NUM>. Further embodiments are provided in the dependent claims.

The pilot device of the multiple-unit train provided by the present disclosure is fixedly mountable on the front end of a train body underframe, and includes the pilot body mounted on the lower end of the train body underframe. The height adjustment device is provided on the front end of the pilot body along the width direction of the pilot body. The height adjustment device is provided with multiple strip-shaped holes of which the length direction is arranged in a vertical direction. The positioning bolt for positioning the height adjustment device and the pilot body is provided between the height adjustment device and the pilot body. The height adjustment device is arranged at the front end of the pilot body and is provided with multiple strip-shaped holes. The height adjustment device and the pilot body are positioned and locked by the positioning bolt. When it is necessary to adjust the height of the pilot body, the height of the height adjustment device on the pilot body can be adjusted up and down through the strip-shaped holes arranged on the height adjustment device, so that the height of the height adjustment device can be adjusted after the wheel tread is turning repaired, so as to ensure that the height of the pilot device of the multiple-unit train remains unchanged, thereby improving the safety of the pilot.

The above and other objects, features, and advantages of the present disclosure are apparent from the following description of embodiments of the present disclosure with reference to the drawings. In the drawings:.

The present disclosure is described below based on embodiments, and the present disclosure is not limited to the embodiments.

As shown in <FIG> and <FIG>, <FIG> is a schematic view showing the mounting structure of a pilot device of a multiple-unit train according to the present disclosure; and <FIG> is a schematic view showing the structure of a pilot bottom plate of the pilot device of the multiple-unit train according to the present disclosure.

This embodiment provides a pilot device of a multiple-unit train which is fixedly mounted on a front end of a train body underframe <NUM> and includes a pilot body <NUM> mounted on a lower end of the train body underframe <NUM>. A height adjustment device <NUM> is provided on a front end of the pilot body <NUM> along a width direction of the pilot body. The height adjustment device <NUM> is provided with multiple strip-shaped holes <NUM> of which a length direction is arranged body <NUM> in a vertical direction. A positioning bolt for positioning the height adjustment device and the pilot body <NUM> is provided between the height adjustment device <NUM> and the pilot body. The height adjustment device <NUM> is arranged at the front end of the pilot body <NUM> and is provided with multiple strip-shaped holes <NUM>. The height adjustment device <NUM> and the pilot body <NUM> are positioned and fixed by the positioning bolt. When it is necessary to adjust the height of the pilot body <NUM>, the height of the height adjustment device <NUM> on the pilot body <NUM> can be adjusted up and down through the strip-shaped holes arranged on the height adjustment device, so that the height of the height adjustment device <NUM> can be adjusted after the wheel tread is turning repaired, so as to ensure that the height of the pilot device of the multiple-unit train remains unchanged, thereby improving the safety of the pilot.

In a specific embodiment of the present disclosure, a crossbeam <NUM> arranged along a width direction of the train body is provided on the train body underframe <NUM>, and a hanging bracket <NUM> hung on the crossbeam is provided on a top surface of the pilot body <NUM>. A first mounting bolt connecting the hanging bracket <NUM> with the crossbeam <NUM> is provided between the hanging bracket and the crossbeam, and a shearing direction of the first mounting bolt is arranged in a pilot direction. The pilot body <NUM> is connected with the train body underframe <NUM> by hoisting. The crossbeam <NUM> is arranged on the train body underframe <NUM> along the width direction of the train body. The hanging bracket <NUM> extends out of the pilot body <NUM>. After being mounted to the crossbeam <NUM>, the hanging bracket <NUM> is fixed through the first mounting bolt. "Through the hanging bracket <NUM>" refers to that after being placed onto the crossbeam <NUM>, the hanging bracket <NUM> is fixed to the crossbeam <NUM> through the first mounting bolt. The method of hanging is adopted to reduce the difficulty of mounting of the pilot body <NUM>. The shearing direction of the first mounting bolt is arranged in the pilot direction to ensure that the first mounting bolt is sheared off when the pilot body <NUM> is impacted to guarantee the pilot function.

In a specific embodiment of the present disclosure, the pilot body <NUM> is further provided with mounting brackets <NUM> respectively located on two sides of the train body underframe in the width direction, a second mounting bolt connecting each of the mounting brackets <NUM> with the train body underframe <NUM> is provided between the corresponding mounting bracket and the train body underframe, and a shearing direction of the second mounting bolt is arranged with the pilot direction. The pilot body <NUM> is further provided with mounting brackets <NUM>. Two mounting brackets <NUM> are arranged in the width direction of the train body underframe <NUM>, which are respectively fixed on two ends of the train body frame <NUM>. The mounting brackets <NUM> ensure the accurate positioning of the pilot body <NUM> at the bottom of the train body underframe <NUM> to avoid affecting the normal running of the multiple-unit train. Besides, to prevent the structure of the mounting brackets <NUM> from affecting the normal pilot function of the pilot device, the shearing direction of the second mounting bolt for connecting the mounting bracket <NUM> with the train body underframe <NUM> is also arranged in the pilot direction of the pilot device, to ensure that the second mounting bolt can be sheared off smoothly, thereby meeting the pilot function.

In a specific embodiment of the present disclosure, the crossbeam <NUM> includes a front crossbeam and a rear crossbeam arranged in the front-rear direction of the train body underframe <NUM>, and the hanging bracket <NUM> includes a front hanging bracket hung on the front crossbeam and a rear hanging bracket hung on the rear crossbeam. The crossbeam <NUM> is arranged in the front-rear direction of the train body underframe <NUM> by the front crossbeam and the rear crossbeam. Correspondingly, the hanging bracket <NUM> is connected front and rear by the front hanging bracket and the rear hanging bracket. Multiple front hanging brackets and multiple rear hanging brackets are provided in the width direction of the train body underframe <NUM>, thereby ensuring the support balance between the pilot device and the train body underframe <NUM>, and further improving the stability of the connection structure of the pilot device.

Preferably, multiple front hanging brackets and multiple rear hanging brackets are provided along the width direction of the train body underframe <NUM>. The number of the hanging brackets <NUM> should avoid affecting the pilot and shearing functions of the pilot device. Multiple front hanging brackets and multiple rear hanging brackets are provided. Preferably, two front hanging brackets and two rear hanging brackets are provided, that is four hanging brackets are provided in all. Each hanging bracket is connected to the crossbeam <NUM> through the first mounting bolt, which meets the stability of the connection structure and the safety of the pilot.

In a specific embodiment of the present disclosure, the hanging bracket <NUM> includes an anti-falling portion extending vertically out of the top surface of the pilot body <NUM> and a hanging portion extending laterally out of the top of the anti-falling portion, and the anti-falling portion is located at a front end of the crossbeam <NUM>. The vertically arranged anti-falling portion of the hanging bracket <NUM> extends out of the top surface of the pilot body, and the hanging portion is laterally arranged on the top of the anti-falling portion. The anti-falling portion and the hanging portion are hung on the crossbeam in an L shape. Besides the anti-falling portion is arranged at the front end of the crossbeam in the forward direction. Therefore, after the first mounting bolt and the second mounting bolt are sheared off when the pilot device is impacted, through the collision limit of the anti-falling portion and the crossbeam, and the pilot body <NUM> is still hung on the crossbeam <NUM> by the hanging bracket <NUM> which prevents the pilot device from falling off to a certain extend and has an anti-falling effect.

In a specific embodiment of the present disclosure, multiple mounting lugs <NUM> for mounting the opening and closing mechanism at the front end of the train body underframe <NUM> are fixedly provided on the periphery the pilot body <NUM>. The pilot device is located on the train body underframe <NUM> at the front end of the locomotive of the multiple-unit train. The opening and closing mechanism of the locomotive of the multiple-unit train for closing the components of the train body underframe <NUM> is further provided at this position. Multiple mounting lugs <NUM> extend out of the periphery the pilot body <NUM> to ensure the connection stability of the opening and closing mechanism.

In a specific embodiment of the present disclosure, the pilot body <NUM> includes a pilot bottom plate <NUM> and a pilot frame <NUM> for fixing the pilot bottom plate <NUM>, and the pilot frame <NUM> is provided with a mounting slideway for mounting the pilot bottom plate <NUM> in a sliding manner. The pilot frame <NUM> is provided with the mounting slideway, and the pilot bottom plate <NUM> is mounted in the pilot frame <NUM> through the slideway structure. After the first and second mounting bolts fail, the slideway also has an anti-falling function for the pilot body <NUM>. The pilot bottom plate <NUM> is fixed in an integrated manner through the pilot frame <NUM>. Specifically, after being mounted through the mounting slideway, the pilot bottom plate <NUM> is locked by bolts to avoid wind resistance during operation of the high-speed train.

The initial mounting height of the pilot device is <NUM> from the rail surface, and the height of the adjustable portion is adjusted as the wheel is turning repaired, so that the height of the pilot device from the rail surface remains unchanged, which can effectively playthe pilot role. The hanging bracket and the mounting bracket are fixedly connected with the pilot bottom plate by welding, which has high strength. The structure of the pilot device is reliable.

Based on the pilot device of the multiple-unit train provided in the above embodiments, a multiple-unit train is further provided according to the present disclosure. A pilot device is provided at the front end of the train body, and the pilot device provided in the multiple-unit train is the pilot device of the multiple-unit train according to any one of the above embodiments.

Claim 1:
A pilot device of a multiple-unit train, fixedly mountable on a front end of a train body underframe (<NUM>), wherein the pilot device comprises a pilot body (<NUM>) configured to be provided on a lower end of a train body underframe (<NUM>), a height adjustment device (<NUM>) is provided on a front end of the pilot body (<NUM>) along a width direction of the pilot body (<NUM>), the height adjustment device (<NUM>) is provided with a plurality of strip-shaped holes (<NUM>) of which a length direction is arranged in a vertical direction, and a positioning bolt for positioning the height adjustment device (<NUM>) and the pilot body (<NUM>) is provided between the height adjustment device (<NUM>) and the pilot body (<NUM>),
wherein a crossbeam (<NUM>) configured to be arranged along a width direction of a train body is configured to be provided on a train body underframe (<NUM>), a hanging bracket (<NUM>) hung on the crossbeam (<NUM>) is provided on a top surface of the pilot body (<NUM>), a first mounting bolt connecting the hanging bracket (<NUM>) with the crossbeam (<NUM>) is provided between the hanging bracket (<NUM>) and the crossbeam (<NUM>), and a shearing direction of the first mounting bolt is arranged in a pilot direction;
wherein the hanging bracket (<NUM>) includes an anti-falling portion extending vertically out of the top surface of the pilot body (<NUM>) and a hanging portion extending laterally out of the top of the anti-falling portion, and the anti-falling portion is located at a front end of the crossbeam (<NUM>); and
wherein the vertically arranged anti-falling portion of the hanging bracket (<NUM>) extends out of the top surface of the pilot body, and the hanging portion is laterally arranged on the top of the anti-falling portion, wherein the anti-falling portion and the hanging portion are hung on the crossbeam in an L shape, the anti-falling portion is arranged at the front end of the crossbeam in the forward direction, after the first mounting bolt and the second mounting bolt are sheared off when the pilot device is impacted through the collision limit of the anti-falling portion and the crossbeam, the pilot body (<NUM>) is still hung on the crossbeam (<NUM>) by the hanging bracket (<NUM>).