Abrasive Block Loading and Unloading Device, Tread Cleaner and Rail Vehicle

Abstract

The present invention provides a grinding block loading and unloading device, a tread cleaning device, and a rail vehicle, belonging to the technical field of rail vehicle equipment. The present invention provides a grinding block loading and unloading device for a tread cleaning device, which is used for installing and disassembling grinding blocks; the tread cleaning device includes: a brake shoe carrier with a wedge-shaped installation groove, a limit stop block, and a stop block locking assembly; wherein, the wedge-shaped installation groove is used for wedge-fitting with a wedge-shaped installation block of the grinding block and is arranged along a substantially tangential direction of the wheel acted on by the grinding block; the stop block locking assembly can unlockably position and install the limit stop block on the brake shoe carrier, so that the limit stop block can limit the wedge-shaped installation block from sliding along the substantially tangential direction in the wedge-shaped installation groove. The grinding block loading and unloading device of the present invention has small installation space requirements in the axial direction of the wheel, stable and reliable installation, and a long service life.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail vehicle equipment, relates to the wheel tread cleaning of rail vehicles, and particularly relates to a grinding block loading and unloading device, a tread cleaner using the grinding block loading and unloading device, and a rail vehicle using the tread cleaner. Background Art

[0002] The tread cleaner is usually installed on a rail vehicle corresponding to the wheel of the rail vehicle, and controllably uses the grinding block (or called "grinding element") installed thereon to act on the wheel tread by friction, so as to produce a tread cleaning effect on the vehicle tread. This frictional effect can keep a relatively good adhesion state between the wheel and the track, which is beneficial to avoiding the problems of wheel spin or skidding due to insufficient adhesion between the wheel and the track during the start, deceleration or braking process of the rail vehicle. Therefore, the tread cleaner is one of the important components installed on the rail vehicle.

[0003] Since the grinding block is a vulnerable part, it needs to be frequently loaded and unloaded. For example, the old grinding block is removed from the tread cleaner, and the new grinding block is installed on the tread cleaner. Therefore, generally, a grinding block loading and unloading device is provided corresponding to the grinding block.

[0004] In the master's thesis titled "Research and Development of Tread Cleaner for High-Speed EMU" by Gou Qingbing et al., a grinding block loading and unloading device is disclosed (see Section 2.6 of Chapter 2 thereof). This grinding block loading and unloading device uses components such as mounting hooks and torsion springs, and fixes the mounting hook on the brake shoe carrier with the help of the torsion spring, thereby restricting the relative movement between the grinding block and the brake shoe carrier. Moreover, this kind of grinding block loading and unloading device is designed to load and unload the grinding block in the axial direction of the wheel. Although it can efficiently load and unload the grinding block on most rail vehicles, it has high space requirements in the axial direction of the wheel (for example, it is easily restricted by the clamping hanger seat, etc.), and it is difficult to be applicable to some rail vehicles with a small installation space in the axial direction of the wheel. Summary of the Invention

[0005] The objective of the present disclosure is to effectively solve or at least alleviate one or more of the above problems and / or other problems existing in the existing tread cleaner, and thus the following technical solutions are provided.

[0006] According to the first aspect of the present disclosure, there is provided a grinding block loading and unloading device for a tread cleaner, which is used for installing and removing the grinding block; the tread cleaner includes: a brake shoe carrier having a wedge-shaped installation groove, a limit stop block, and a stop block locking assembly;

[0007] Wherein, the wedge-shaped installation groove is used for wedge-fitting with the wedge-shaped installation block of the grinding block and is arranged along the approximate tangent direction of the wheel on which the grinding block acts;

[0008] The stopper locking assembly can position and install the limit stopper on the brake shoe carrier in an unlockable manner, so that the limit stopper can restrict the wedge-shaped mounting block from sliding in the wedge-shaped mounting groove along the substantially tangential direction.

[0009] According to an additional or alternative embodiment, when the limit stopper restricts the wedge-shaped mounting block from sliding in the wedge-shaped mounting groove, one end face of the wedge-shaped mounting block forms a surface contact with the limit stopper.

[0010] According to an additional or alternative embodiment, the wedge-shaped mounting block can be slidably inserted into the wedge-shaped mounting groove from the first end of the wedge-shaped mounting groove along the substantially tangential direction, and the second end of the wedge-shaped mounting groove is blocked.

[0011] According to an additional or alternative embodiment, the limit stopper has a first stopper hole and / or a second stopper hole;

[0012] The limit stopper is pivotally mounted on the brake shoe carrier by a pivot pin passing through the first stopper hole;

[0013] The stopper locking assembly has a locking pin, and the locking pin passing through the second stopper hole prevents the limit stopper from rotating around the pivot pin, so that the limit stopper is positioned and installed on the brake shoe carrier in an unlockable manner.

[0014] According to an additional or alternative embodiment, a lifting lug is provided on the limit stopper.

[0015] According to an additional or alternative embodiment, a stopper limiting groove for positioning and installing the limit stopper and restricting the limit stopper from moving in the tangential direction is constructed on the brake shoe carrier.

[0016] According to an additional or alternative embodiment, a locking assembly positioning and mounting block for positioning and installing the stopper locking assembly is provided on the brake shoe carrier, and a first pin rod mounting hole and a second pin rod mounting hole are provided on the locking assembly positioning and mounting block.

[0017] According to an additional or alternative embodiment, the stopper locking assembly further includes:

[0018] A U-shaped pin rod, which includes a left pin rod and a right pin rod;

[0019] An elastic reset element, which is sleeved on the left pin rod;

[0020] A retaining ring, which is penetrated by the left pin rod; and

[0021] A manual operation part, which is installed on the right pin rod;

[0022] Wherein, the elastic reset element is located in the second pin rod mounting hole, and its upper and lower ends respectively abut against the locking pin and the retaining ring;

[0023] The right pin rod can slide up and down through the first pin rod mounting hole, and the left pin rod and the locking pin fixedly connected to its upper end can slide up and down through the second pin rod mounting hole;

[0024] By pressing down the manual operation part, the locking pin moves downward together with the U-shaped pin rod and leaves the second stop block hole, and at the same time the elastic reset element is compressed.

[0025] According to an additional or alternative embodiment, the locking pin is connected to the upper end of the left pin rod in an interference fit manner.

[0026] According to an additional or alternative embodiment, when the downward pressing operation is cancelled, the compressed elastic reset element pushes up the locking pin so that the locking pin passes through the second stop block hole.

[0027] According to an additional or alternative embodiment, the retaining ring is installed in the second pin rod mounting hole in a threaded fixed connection manner.

[0028] According to an additional or alternative embodiment, the stop block locking assembly further includes: a locking nut, which locks the manual operation part to the upper end of the right pin rod in a nut fixing manner.

[0029] According to an additional or alternative embodiment, the first pin rod mounting hole and the second pin rod mounting hole are through holes arranged substantially parallel, and the second pin rod mounting hole is relatively short.

[0030] According to a second aspect of the present disclosure, there is provided a tread cleaning device, which includes:

[0031] A grinding block having a wedge-shaped mounting block;

[0032] A cylinder for driving the grinding blocks to act on the tread of the wheel of the vehicle towards each other; and

[0033] The grinding block loading and unloading device as described in any one of the above;

[0034] Wherein, the grinding block loading and unloading device is connected to the piston rod of the cylinder through the brake shoe carrier connection part of the brake shoe carrier.

[0035] According to a third aspect of the present disclosure, there is provided a rail vehicle, which includes the aforementioned tread cleaning device; wherein, the grinding blocks of the tread cleaning device act on the tread of the wheels of the rail vehicle towards each other, and the grinding blocks of the tread cleaning device can be installed and disassembled along the substantially tangential direction of the wheels.

[0036] The above features, operations, and advantages of the present invention will become more apparent from the following description and the accompanying drawings. Description of the Drawings

[0037] From the following detailed description in conjunction with the accompanying drawings, the above and other objects and advantages of the present invention will become more completely clear, wherein the same or similar elements are denoted by the same reference numerals.

[0038] Figure 1 is a perspective structural view of a grinding block loading and unloading device according to an embodiment of the present invention, showing the grinding block mounted thereon.

[0039] Figure 2 is Figure 1 a front view of the grinding block loading and unloading device of the illustrated embodiment.

[0040] Figure 3 is Figure 1 a right side view of the grinding block loading and unloading device of the illustrated embodiment.

[0041] Figure 4 is Figure 1 a rear view of the grinding block loading and unloading device of the illustrated embodiment.

[0042] Figure 5 is corresponding to Figure 2 a partial cross-sectional view of the front view of the grinding block loading and unloading device shown.

[0043] Figure 6 is a perspective structural view of a grinding block according to an embodiment of the present invention.

[0044] Figure 7 is Figure 1 a perspective structural view of a brake shoe used in the grinding block loading and unloading device of the illustrated embodiment.

[0045] Figure 8 is Figure 1 a perspective structural view of a limit stop used in the grinding block loading and unloading device of the illustrated embodiment.

[0046] Figure 9 is Figure 1 a perspective structural view of a stop locking assembly used in the grinding block loading and unloading device of the illustrated embodiment.

[0047] Figure 10 Schematically shows an installation view of a tread cleaning device according to an embodiment of the present invention relative to a wheel of a rail vehicle according to an embodiment of the present invention.

[0048] Reference Numeral Explanation:

[0049] 10, tread cleaning device; 110, grinding block; 111, grinding block body; 130, cylinder

[0050] 113, Wedge-shaped mounting block, 300, Grinding block loading and unloading device, 310, Brake shoe carrier

[0051] 311, Locking component positioning mounting block, 3111, First pin rod mounting hole

[0052] 3112, Second pin rod mounting hole, 312, Stopper limiting groove, 313, Shoulder

[0053] 3131, First brake shoe carrier hole, 3133, Second brake shoe carrier hole, 315, Wedge-shaped mounting groove

[0054] 318, Bottom surface of brake shoe carrier, 319, Brake shoe carrier connecting part, 330, Stopper

[0055] 331, Pivot pin, 333, First stopper hole, 335, Second stopper hole

[0056] 339, Lifting ear, 350, Stopper locking component, 351, Locking pin

[0057] 352, Elastic reset element, 353, Retaining ring, 354, U-shaped pin rod

[0058] 3541, Left pin rod, 355, Manual operation part, 356, Locking nut Detailed implementation mode

[0059] The present invention will be more comprehensively described below by referring to the accompanying drawings which illustrate schematic embodiments of the present invention. However, the present invention can be implemented in different forms and should not be construed as limited to the embodiments given herein. The above-mentioned embodiments are given to make the disclosure herein comprehensive and complete, so as to make the understanding of the protection scope of the present invention more comprehensive and accurate.

[0060] Terms such as "including" and "comprising" indicate that in addition to the components directly and explicitly stated in the specification and claims, the technical solutions of the present invention do not exclude the case of having other components not directly or explicitly stated.

[0061] For the convenience of description and understanding, the corresponding x-direction, y-direction and z-direction are defined in the accompanying drawings. Among them, the thickness direction of the grinding block is defined as the z-direction, the positive direction of the z-direction points from one end of the cylinder of the tread cleaning device to the grinding surface, the length direction of the wedge-shaped mounting block is defined as the x-direction, and the width direction of the wedge-shaped mounting block is defined as the y-direction.

[0062] In the following description of Figures 1 to 10 the orientation terms such as "left", "right", "up" and "down" are based on Figure 2 or Figure 5It is defined by the placement orientation of the grinding block loading and unloading device in []. It should be understood that these orientation terms are used for the description and clarification of relative positions, and they can change accordingly with the change of the orientation where the grinding block loading and unloading device or the tread cleaning device is located.

[0063] As Figure 10 shown, the tread cleaning device 10 of an embodiment of the present invention can be installed corresponding to the wheels of a rail vehicle of an embodiment of the present invention. The tread cleaning device 10 has a grinding block 110, and the working surface (i.e., the grinding surface) of the grinding block 110 faces the wheel tread 91 of the wheel. When the tread cleaning device 10 is triggered to perform tread cleaning work, the grinding block 110 acts on the wheel tread 91 of the wheel to generate friction therewith, so that the wheel can maintain a relatively good adhesion state with the track.

[0064] The tread cleaning device 10 further includes a grinding block loading and unloading device 300 as shown in the Figures 1 to 5 embodiment, and a cylinder 130, etc.; the grinding block 110 is installed and disassembled through the grinding block loading and unloading device 300 as shown in the Figures 1 to 5 embodiment. Through the grinding block loading and unloading device 300, the grinding block 110 can be detachably installed on the brake shoe carrier 310 of the grinding block loading and unloading device 300, and then connected to the piston rod of the cylinder through the brake shoe carrier connecting portion 319. For example, the front end of the piston rod is connected to the brake shoe carrier connecting portion 319 through a shock-absorbing rubber and a disc spring. In this way, vibration impact can be effectively attenuated and the eccentric wear of the grinding block 110 can be prevented. Therefore, the cylinder 130 can drive the grinding block 110 to act on the wheel tread 91 in a mutually facing friction manner through the connecting portion, the brake shoe carrier 310, etc.

[0065] As Figure 6 shown, in order to avoid performing loading and unloading operations on the grinding block 110 in the axial direction of the wheel (for example, in the y direction), a wedge-shaped mounting block 113 is provided on the mounting surface (which is the surface opposite to the grinding surface) of the grinding block 110 of the embodiment of the present invention. The wedge-shaped mounting block 113 is arranged substantially along the tangent direction of the ground wheel (for example, in the x direction) (i.e., arranged along the substantially tangent direction). Specifically, the wedge-shaped mounting block 113 can be a block with a substantially trapezoidal cross-section in reverse, and it can be convexly provided in the center of the mounting surface of the grinding block 110; optionally, the wedge-shaped mounting block 113 can be integrally formed with the back plate (if there is a back plate) of the grinding block body 111 of the grinding block 110, or can be integrally formed with the grinding block body 111 of the grinding block 110 (if there is no back plate). The specific size, convex height, etc. of the wedge-shaped mounting block 113 are not restrictive.

[0066] As Figures 1 to 5, the grinding block loading and unloading device 300 includes a brake shoe carrier 310 having a wedge-shaped mounting groove 315, a limit stop 330, and a stop locking assembly 350; wherein, the wedge-shaped mounting groove 315 is used for wedge-fitting with the wedge-shaped mounting block 113 of the grinding block 110 and is arranged along the approximate tangent direction of the wheel (e.g., the x-direction); thus, the wedge-shaped mounting groove 315 and the wedge-shaped mounting block 113 can be designed to cooperate with each other structurally. For example, the lengths of the wedge-shaped mounting groove 315 and the wedge-shaped mounting block 113 in the x-direction can be equal, and the widths of the wedge-shaped mounting groove 315 and the wedge-shaped mounting block 113 in the y-direction can be substantially equal. It will be understood that when the grinding block 110 is in the grinding working condition, the embedded mounting structure achieved by the wedge-shaped mounting groove 315 and the wedge-shaped mounting block 113 will bear the impact force and vibration transmitted by the grinding block 110, etc. The wedge-fitting mounting method has high structural strength and good mounting stability, and can better resist such impact force and vibration.

[0067] Specifically, the brake shoe carrier 310 also has a brake shoe carrier bottom surface 318 facing the grinding block 110 as shown in Figure 7 . At one end close to the cylinder, a brake shoe carrier connection part 319 is also provided, which is used for connecting with the piston rod of the cylinder. The wedge-shaped mounting groove 315 is opened on the brake shoe carrier bottom surface 318. The brake shoe carrier 310 can be an integral structure as a whole, for example, formed by integral machining.

[0068] The stop locking assembly 350 can position and install the limit stop 330 on the brake shoe carrier 310 in an unlockable manner, so that the limit stop 330 can limit the wedge-shaped mounting block 113 from sliding along the tangent direction (e.g., the x-direction) in the wedge-shaped mounting groove 315, for example, limit the wedge-shaped mounting block 113 from sliding out of the wedge-shaped mounting groove 315 along the x-direction. In the grinding block loading and unloading device 300 of an embodiment of the present invention, since the limit stop 330 is used to lock the wedge-shaped mounting block 113 in the wedge-shaped mounting block 113, there is an easy large contact surface between the end face of the wedge-shaped mounting block 113 and the limit stop 330. The limit stop 330 can also better resist the impact force and vibration in the x-direction transmitted by the grinding block 110, and is very unlikely to be worn and / or broken by impact. Thus, the service life of the grinding block loading and unloading device 300 can be greatly extended, and the risk of the grinding block falling off during the working process is small. Moreover, the grinding block loading and unloading device 300 makes the key stressed components (such as the wedge-shaped mounting block 113, the limit stop 330) less susceptible to extreme environmental factors (such as erosion by sand, wind, rain, and snow), which is more conducive to improving its life.

[0069] For comparison, it should be understood that the grinding block loading and unloading device described in the background art is limited by its structural design. The contact area on the mounting hook is small and the mounting gap is large, resulting in poor mounting stability of the grinding block (especially in the general tangential direction of the wheel). In some working conditions with severe vibration, component impact wear or fatigue fracture is likely to occur, the service life of the grinding block loading and unloading device is short, and there is a risk of the grinding block falling off during operation. Moreover, the grinding block loading and unloading device described in the background art is easily exposed for a long time and is vulnerable to extreme environmental factors (such as erosion by sand, wind, rain, and snow), which further easily reduces its short service life.

[0070] In particular, after the limit stop 330 is unlocked, the installation and disassembly operations of the grinding block 110 in the x-direction can be conveniently carried out. Therefore, the grinding block loading and unloading device 300 of the embodiment of the present invention has very low requirements for the installation space in the y-direction, and preferably solves the problem of difficult loading and unloading of the grinding block in the extreme frame space.

[0071] Continue as Figures 1 to 9 As shown, in an embodiment, when the limit stop 330 restricts the sliding of the wedge-shaped mounting block 113 in the wedge-shaped mounting groove 315, one end face of the wedge-shaped mounting block 113 will form a surface contact with the limit stop 330, thereby increasing the effective contact area between them, which is beneficial to withstanding greater impact force in the x-direction and resisting higher-frequency vibrations.

[0072] See Figure 7 , one end of the wedge-shaped mounting groove 315 (the positive end in the x-direction) is an open wedge-shaped opening, and the other end is blocked (not shown in the figure). The wedge-shaped mounting block 113 can be slidably inserted into the wedge-shaped mounting groove 315 from the wedge-shaped opening end of the wedge-shaped mounting groove 315 along the general tangential direction (such as the x-direction) until the wedge-shaped mounting block 113 abuts against the blocked end of the wedge-shaped mounting groove 315. Therefore, it is very convenient to install the grinding block 110 in the x-direction, and the requirements for the installation space in the y-direction are also very low.

[0073] Continue as Figures 1 to 5 As shown, in an embodiment, the limit stop 330 is pivotally mounted relative to the brake shoe carrier 310. See Figure 8 , Figure 1 and Figure 5, the limiting stop 330 is provided with a first stop hole 333 and a second stop hole 335, which penetrate the limiting stop 330 in the x direction respectively. Correspondingly, corresponding brake shoe carrier holes can be provided on the brake shoe carrier 310, such as a first brake shoe carrier hole 3131 and a second brake shoe carrier hole 3133. The limiting stop 330 can be pivotally mounted on the brake shoe carrier 310 through a pivot pin 331 (such as an elastic pin) passing through the first stop hole 333 and mounted on the corresponding brake shoe carrier hole. The stop locking assembly 350 has a locking pin 351, which is arranged corresponding to the second stop hole 335. The limiting stop 330 is prevented from rotating around the pivot pin 331 by the locking pin 351 passing through the second stop hole 335, so that the limiting stop 330 is unlockably positioned and mounted on the brake shoe carrier 310. More specifically, a lifting lug 339 is provided on the limiting stop 330. After the rotation of the limiting stop 330 is unlocked, that is, when the locking pin 351 leaves the second stop hole 335, the limiting stop 330 can be conveniently lifted to rotate around the pivot pin 331 by operating the lifting lug 339. Furthermore, the wedge-shaped mounting block 113 of the grinding block 110 can freely slide out in the x direction, and the disassembly operation of the grinding block 110 becomes very simple.

[0074] In one embodiment, referring to Figure 7 and Figure 1 , a stop limiting groove 312 is provided on the brake shoe carrier 310, and the limiting stop 330 can fall into the stop limiting groove 312. The stop limiting groove 312 can thus position and mount the limiting stop 330 and limit the movement of the limiting stop 330 in the substantially tangential direction (such as the x direction). The stop limiting groove 312 can be formed by grooving substantially along the yz plane. Moreover, the width of the stop limiting groove 312 can be basically equal to or slightly larger than the thickness of the limiting stop 330. A corresponding shoulder 313 is formed above the stop limiting groove 312, and a first brake shoe carrier hole 3131 and a second brake shoe carrier hole 3133 can be provided on the shoulder 313, which can be used for the pivot pin 331 and the locking pin 351 respectively.

[0075] Referring to Figures 1 to 5 , Figure 7 , a locking assembly positioning and mounting block 311 is provided on the brake shoe carrier 310. The stop locking assembly 350 is slidably positioned and mounted on the brake shoe carrier 310 in the x direction by means of the locking assembly positioning and mounting block 311. Specifically, a first pin rod mounting hole 3111 and a second pin rod mounting hole 3112 with a through-hole structure, or one of them, can be provided on the locking assembly positioning and mounting block 311. For example, an operable pin rod in the stop locking assembly 350 can slidably pass through the first pin rod mounting hole 3111 or the second pin rod mounting hole 3112 and be positioned and mounted relative to it.

[0076] Taking the operable pin rod in the stop locking assembly 350 as a U-shaped pin rod 354 as an example, referring toFigure 5 and Figure 9 As shown in Figure 9 , the stopper locking assembly 350 may include a locking pin 351, an elastic reset element 352, a retaining ring 353, a U-shaped pin rod 354, a manual operation part 355, and a locking nut 356. The U-shaped pin rod 354 includes a left pin rod 3541 and a right pin rod 3542. The elastic reset element 352 may specifically be a compression spring, which may be sleeved on the left pin rod 3541. The locking pin 351 may be connected to the upper end of the left pin rod 3541 by interference fit; the retaining ring 353 is installed in the second pin rod mounting hole 3112 in a threaded fixed connection manner, and it may specifically be a locking sleeve with an external thread. The inner diameter of the retaining ring 353 is larger than the outer diameter of the left pin rod 3541, and the left pin rod 3541 may pass through the retaining ring 353 and move freely up and down relative to it. The manual operation part 355 may be installed on the right pin rod 3542, for example, near the upper end of the right pin rod 3542. The manual operation part 355 may specifically be a handle, etc., which protrudes outward in the y direction for convenient pressing operation. The locking nut 356 may be in threaded cooperation with the upper end of the right pin rod 3542, so as to lock the manual operation part 355 to the upper end of the right pin rod 3542 in a nut-fixed manner.

[0077] The elastic reset element 352 may be located in the second pin rod mounting hole 3112, and its upper and lower ends respectively abut against the locking pin 351 and the retaining ring 353; the right pin rod 3542 may slide up and down through the first pin rod mounting hole 3111, and the left pin rod 3541 and the locking pin 351 fixedly connected to its upper end may slide up and down through the second pin rod mounting hole 3112.

[0078] By pressing down the manual operation part 355, the locking pin 351 can move downward together with the U-shaped pin rod 354 and leave the second stopper hole 335, and at the same time the elastic reset element 352 is compressed to prepare to provide the force required for the reset of the locking pin 351. When the downward pressing operation is cancelled, the compressed elastic reset element 352 will push up the locking pin 351 so that the locking pin 351 passes through the second stopper hole 335 until the limit stopper 330 is locked; it will be understood that at this time the U-shaped pin rod 354 will also move upward and reset together with the locking pin 351. Specifically, an inner stepped surface may be provided in the upper section of the second pin rod mounting hole 3112, and a step may also be provided on the cylindrical surface of the locking pin 351. When this step abuts against the stepped surface of the second pin rod mounting hole 3112, it means that the locking pin 351 has been pushed up to the end, the locking pin 351 has passed through the second stopper hole 335, and the reset of the entire stopper locking assembly 350 is completed.

[0079] Specifically, the first pin rod mounting hole 3111 and the second pin rod mounting hole 3112 are through holes arranged substantially parallel to each other, and the second pin rod mounting hole 3112 is relatively short, so as to provide a movable space dimension for the manual operation part 355 on the U-shaped pin rod 354 in the up and down direction.

[0080] During the process of disassembling the grinding block 110 of the above embodiment, referring to Figure 5 and Figure 1 , by pressing down the manual operation part 355, the locking pin 351 can move downward together with the U-shaped pin rod 354 and leave the second stopper hole 335. Then, by operating the lifting lug 339, the limit stopper 330 is pulled to rotate relative to the pivot pin 331 and leave the stopper limit groove 312. The upper and lower limits of the wedge-shaped mounting block 113 by the limit stopper 330 are cancelled. Thus, the grinding block 110 can be slid out along the x direction to complete the disassembly operation.

[0081] During the process of installing the grinding block 110 of the above embodiment, referring to Figure 5 and Figure 1 , first, the wedge-shaped mounting block 113 is aligned with the wedge-shaped mounting groove 315 and inserted into the wedge-shaped mounting groove 315. Then, press down the manual operation part 355 and let the limit stopper 330 fall into the stopper limit groove 312. Release the manual operation part 355, and the compressed elastic reset element 352 will push up the locking pin 351 so that the locking pin 351 passes through the second stopper hole 335 until the limit stopper 330 is locked (refer to the Figure 5 illustrated installation state), and the installation operation is completed.

[0082] Therefore, the installation and disassembly operations of the grinding block 110 are also simple, and the requirement for the axial space of the wheel is small, which is very suitable for on-vehicle operation.

[0083] It should be noted that the grinding block loading and unloading device 300 of the above embodiment can lock the limit stopper 330 through the two-point positioning characteristic of the pin. The locking and unlocking of the limit stopper 330 are also convenient and reliable. The internal structure of the grinding block loading and unloading device 300 is less affected by vibration (especially high frequency), and the operation reliability is better.

[0084] The implementation manner of the stopper locking assembly 350 is not limited to the above example. In other alternative embodiments, the U-shaped pin rod 354, which is an operable pin rod, can be replaced by an L-shaped pin rod. The upper end of the vertically arranged pin rod is fixedly connected to the locking pin 351 and passes through the second pin rod mounting hole 3112. The horizontally arranged pin rod is located below the positioning mounting block 311, and the manual operation part 355 can be installed on the horizontally arranged pin rod for convenient operation.

[0085] It should be noted that in the above text, the term "substantially tangential direction" or "substantially along the tangential direction of..." reflects that the listed "tangential direction" can be changed to a certain extent (i.e., not limited to the strict "tangential direction"). The degree of this change can be, for example, the tolerance range acceptable to those skilled in the art, or the degree of change can be, for example, the degree that those skilled in the art can understand in combination with the purpose of the present disclosure and that can be changed without substantially increasing the installation space in the axial direction of the wheel.

[0086] The above examples mainly illustrate the grinding block loading and unloading device, the tread cleaning device and the rail vehicle using the tread cleaning device of the embodiments of the present invention. Although only some embodiments of the present invention are described, those of ordinary skill in the art should understand that the present invention can be implemented in many other forms without departing from its gist and scope. Therefore, the examples and embodiments shown are regarded as illustrative rather than restrictive, and the present invention may cover various modifications and substitutions without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A grinding block loading and unloading device (300) of a tread cleaning device (10), which is used for installing and disassembling a grinding block (110), and is characterized in that, Comprising: A brake shoe carrier (310) having a wedge-shaped mounting groove (315), a limit stop (330), and a stop locking assembly (350); Wherein, the wedge-shaped mounting groove (315) is used for wedge-fitting with a wedge-shaped mounting block (113) of the grinding block (110) and is arranged along a substantially tangential direction of the wheel acted upon by the grinding block (110); The stop locking assembly (350) can position and install the limit stop (330) on the brake shoe carrier (310) in an unlockable manner, so that the limit stop (330) can limit the wedge-shaped mounting block (113) from sliding in the wedge-shaped mounting groove (315) along the substantially tangential direction, Wherein, the limit stop (330) has a first stop hole (333) and a second stop hole (335); The limit stop (330) is pivotally mounted on the brake shoe carrier (310) through a pivot pin (331) passing through the first stop hole (333); The stop locking assembly (350) has a locking pin (351), and the locking pin (351) passing through the second stop hole (335) prevents the limit stop (330) from rotating around the pivot pin (331), so that the limit stop (330) is positionally installed on the brake shoe carrier (310) in an unlockable manner.

2. The grinding block loading and unloading device (300) according to claim 1, characterized in that, When the limit stop (330) restricts the wedge-shaped mounting block (113) from sliding in the wedge-shaped mounting groove (315), one end face of the wedge-shaped mounting block (113) forms a surface contact with the limit stop (330).

3. The grinding block loading and unloading device (300) according to claim 1, characterized in that, The wedge-shaped mounting block (113) can be slidably inserted into the wedge-shaped mounting groove (315) from a first end of the wedge-shaped mounting groove (315) along the substantially tangential direction, and a second end of the wedge-shaped mounting groove (315) is blocked.

4. The abrasive block loading and unloading device (300) according to claim 1, characterized in that, A lifting ear (339) is provided on the limit stop (330).

5. The grinding block loading and unloading device (300) according to claim 1, characterized in that, The brake shoe carrier (310) is configured with a stop limit groove (312) for positionally installing the limit stop (330) and restricting the limit stop (330) from moving in the tangential direction.

6. The grinding block loading and unloading device (300) according to claim 1, characterized in that, The brake shoe carrier (310) is provided with a locking assembly positioning and mounting block (311) for positionally installing the stop locking assembly (350), and the locking assembly positioning and mounting block (311) is provided with a first pin rod mounting hole (3111) and a second pin rod mounting hole (3112).

7. The grinding block loading and unloading device (300) according to claim 6, characterized in that, The stop locking assembly (350) further includes: A U-shaped pin rod (354), which includes a left pin rod (3541) and a right pin rod (3542); An elastic reset element (352), which is sleeved on the left pin rod (3541); A retaining ring (353), which is penetrated by the left pin rod (3541); and A manual operation part (355), which is installed on the right pin rod (3542); Wherein, the elastic reset element (352) is located in the second pin rod mounting hole (3112) and its upper and lower ends respectively abut against the locking pin (351) and the retaining ring (353); The right pin rod (3542) is slidably penetrated through the first pin rod mounting hole (3111), and the left pin rod (3541) and the locking pin (351) fixedly connected to the upper end thereof are slidably penetrated through the second pin rod mounting hole (3112); By pressing down the manual operation part (355), the locking pin (351) moves downward together with the U-shaped pin rod (354) and leaves the second stop block hole (335), and at the same time, the elastic reset element (352) is compressed.

8. The grinding block loading and unloading device (300) according to claim 7, characterized in that, The locking pin (351) is connected to the upper end of the left pin rod (3541) by interference fit.

9. The abrasive block loading and unloading device (300) according to claim 7, characterized in that, When the downward pressing operation is cancelled, the compressed elastic reset element (352) pushes up the locking pin (351) so that the locking pin (351) passes through the second stop block hole (335).

10. The grinding block loading and unloading device (300) according to claim 7, characterized in that, The retaining ring (353) is installed in the second pin rod mounting hole (3112) by means of threaded fixed connection.

11. The grinding block loading and unloading device (300) according to claim 7, characterized in that, The stop block locking assembly (350) further includes: a locking nut (356), which locks the manual operation part (355) to the upper end of the right pin rod (3542) in a nut fixing manner.

12. The grinding block loading and unloading device (300) according to claim 7, characterized in that, The first pin rod mounting hole (3111) and the second pin rod mounting hole (3112) are through holes arranged substantially in parallel, and the second pin rod mounting hole (3112) is relatively short.

13. A tread cleaning device (10), comprising: A grinding block (110) having a wedge-shaped mounting block (113), A cylinder (130) for driving the grinding block (110) to act on the tread surface (91) of the wheel of the vehicle towards each other; It is characterized in that it further includes: The grinding block loading and unloading device (300) according to any one of claims 1 to 12; Wherein, the grinding block loading and unloading device (300) is connected to the piston rod of the cylinder (130) through the brake shoe carrier connecting part (319) of the brake shoe carrier (310).

14. An orbital vehicle, characterized in that, Including the tread cleaning device (10) according to claim 13; wherein, the grinding blocks (110) of the tread cleaning device (10) act on the tread surface (91) of the wheels of the rail vehicle towards each other, and the grinding blocks (110) of the tread cleaning device (10) can be installed and disassembled along the approximate tangent direction of the wheels.

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