CN215148723U - Tool for replacing joint bearing of top plate of urban rail vehicle through passage - Google Patents

Abstract

The utility model provides a city rail vehicle link up roof joint bearing and change frock relates to mechanical design and manufacturing field. A replacement tool for a joint bearing of a top plate of a run-through passage of an urban rail vehicle comprises a positioning device and a pushing device, wherein the positioning device comprises a bearing die, a plurality of stepped holes are formed in the bearing die, each stepped hole comprises an inner hole and an outer hole, and the inner holes are used for abutting against the joint bearings; the pushing device comprises a push rod which is arranged in the stepped hole in a sliding mode, the center line of the push rod is overlapped with the center line of the stepped hole, and the push rod can reciprocate along the center line of the stepped hole. This frock is changed to city rail vehicle link up roof joint bearing, it can make the operation simple and convenient more, reduces operator's degree of dependence to its work efficiency of promotion that can be very big.

Description

Tool for replacing joint bearing of top plate of urban rail vehicle through passage

Technical Field

The utility model relates to a mechanical design and manufacturing field particularly, relate to a city rail vehicle link up roof joint bearing and change frock.

Background

The operation mode of joint bearing replacement is to use the bench of pincers or the manual change of current puller after the joint bearing group gets off the car, and the maintainer need extrude the back shaft from the joint bearing earlier, impresses the back shaft into new joint bearing again. The main problems are as follows: 1. the joint bearing is small in size, the outer diameter of an outer ring is only 22mm, the inner diameter of an inner ring is only 12mm, the support shaft and the joint bearing are in interference fit, the area of a stress point is allowed to be small, a clamp table or an existing puller cannot effectively fix the joint bearing, the joint bearing is easy to shift in the assembling process, the fit of the inner ring and the outer ring of the joint bearing and the fit precision of the inner ring and the support shaft are affected, the joint bearing can be damaged when the joint bearing is serious, and the application quality and the service life of the joint bearing are reduced. 2. During operation, a maintainer needs to manually and effectively fix and correctly position the joint bearing group, the bench clamp or the existing puller cannot be effectively matched with the joint bearing, the bench clamp or the existing puller needs to be manually adjusted and confirmed to be in a fixed state repeatedly, much time is spent, and the operation efficiency is influenced. 3. The replacement work of the joint bearing is one of the main contents of the maintenance operation of the existing electric passenger car. Calculating according to the existing configuration of 70 trains of each line, wherein each train has 20 joint bearings, the planned repair total number is 1400 within 3 years, and the planned repair frequency is about 39/month. Reckoning according to the existing 3% failure rate, and the failure repair frequency is about 1/month. Totaling the frequency of a single line to about 40/month. Only one joint bearing group can be operated by manual operation each time, a single train usually needs to operate for 5-6 hours, and the operation efficiency is obviously low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a this urban rail vehicle link up roof joint bearing and change frock, it can make the operation more simple and convenient, reduces operator's degree of dependence to its work efficiency of promotion that can be very big.

The embodiment of the utility model is realized like this:

the embodiment of the application provides a replacement tool for a knuckle bearing of a top plate of a through passage of an urban rail vehicle, which comprises a positioning device and a pushing device, wherein the positioning device comprises a bearing die, a plurality of stepped holes are formed in the bearing die, each stepped hole comprises an inner hole and an outer hole, and the inner holes are used for abutting against the knuckle bearing; the pushing device comprises a push rod which is arranged in the stepped hole in a sliding mode, the center line of the push rod is overlapped with the center line of the stepped hole, and the push rod can reciprocate along the center line of the stepped hole.

In some embodiments of the present invention, the opening of the inner hole is an arc-shaped chamfer structure.

In some embodiments of the present invention, a base is disposed below the positioning device, the base includes a bottom plate, the bottom plate has a positioning hole, the push rod is opposite to the positioning hole, and the central line of any stepped hole can move to coincide with the central line of the positioning hole.

In some embodiments of the present invention, the bottom plate has a guiding groove formed thereon, and the guiding groove is communicated with the positioning hole.

The utility model discloses an in some embodiments, the bilateral symmetry of above-mentioned locating hole is provided with the limiting plate, and the limiting plate is parallel with the guide way.

In some embodiments of the present invention, a plurality of support rods are vertically disposed on the bottom plate, and a stabilizing plate is disposed at one end of the support rod away from the bottom plate.

In some embodiments of the present invention, a support is disposed on the bottom plate, and the support is detachably connected to the push rod.

The utility model discloses an in some embodiments, be provided with the diaphragm on the above-mentioned support, the push rod runs through the diaphragm, and the push rod is connected with diaphragm screw-thread fit.

The utility model discloses an in some embodiments, be provided with a location section of thick bamboo on the above-mentioned diaphragm, the location cover of thick bamboo is established on the push rod, and the central line of a location section of thick bamboo coincides with the central line of shoulder hole, and the push rod is along a location section of thick bamboo reciprocating motion.

In some embodiments of the present invention, the push rod is disposed on the rotating member far away from the mold.

Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:

the embodiment of the application provides a replacement tool for a knuckle bearing of a top plate of a through passage of an urban rail vehicle, which comprises a positioning device and a pushing device, wherein the positioning device comprises a bearing die, a plurality of stepped holes are formed in the bearing die, each stepped hole comprises an inner hole and an outer hole, and the inner holes are used for abutting against the knuckle bearing; the pushing device comprises a push rod which is arranged in the stepped hole in a sliding mode, the center line of the push rod is overlapped with the center line of the stepped hole, and the push rod can reciprocate along the center line of the stepped hole. The positioning device is used for positioning the joint bearing, the joint bearing comprises an outer ring body, an inner ring body and a rotating shaft, and the positioning device is used for accurately positioning the rotating shaft, the inner ring body and the outer ring body and preventing the rotating shaft, the inner ring body and the outer ring body from transversely shifting when the rotating shaft, the inner ring body and the outer ring body are loaded in the vertical direction. The pushing device is used for installing and disassembling the inner ring body and the rotating shaft, and the installing and disassembling efficiency is improved. A plurality of shoulder holes have been seted up on the above-mentioned mould that bears, and a mould multicavity greatly promotes its work efficiency, and the outer hole of above-mentioned shoulder hole is used for above-mentioned outer ring body of accurate location, and above-mentioned hole is used for fixing a position above-mentioned pivot and inner ring body. The outer diameter of above-mentioned outer ring body and above-mentioned inner ring body all is greater than the diameter of above-mentioned hole, and the outer diameter of above-mentioned inner ring body is greater than the diameter of hole, and the internal diameter of inner ring body is less than the diameter of hole to the axial length of above-mentioned inner ring body is greater than the axial length of outer ring body, makes things convenient for above-mentioned joint bearing of above-mentioned hole location. The push rod is used for pushing the rotating shaft to be far away from the inner ring body or fixing the inner ring body and the rotating shaft. The center line positions of the push rod and the stepped hole are overlapped, and the push rod reciprocates along the center line direction, so that the rotating shaft and the inner ring body are convenient to mount and dismount, and the inner ring body and the outer ring body are prevented from moving transversely.

Consequently, this frock is changed to city rail vehicle link up roof joint bearing, it can make the operation more simple and convenient, reduces operator's degree of dependence to its work efficiency of promotion that can be very big.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a top view of a carrier mold;

FIG. 3 is a top view of the base plate;

FIG. 4 is a schematic view of installation and use;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic structural view of the horizontal plate;

fig. 7 is a schematic structural view of embodiment 2 of the present invention;

fig. 8 is a schematic view of disassembly and use.

Icon: 100-a positioning device; 110-a stepped bore; 1101-outer pores; 1102-an inner bore; 120-arc chamfering; 200-a pushing device; 210-a push rod; 220-a cross bar; 230-a hydraulic device; 240-thimble; 300-a scaffold; 310-a transverse plate; 320-upright stanchion; 400-a base; 410-a bottom plate; 420-a support bar; 430-a stabilizing plate; 5-a limiting plate; 6-positioning holes; 7-a guide groove; 8-a rotating shaft; 9-outer ring body; 10-internal ring body; 11-positioning the cartridge.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of the present invention, fig. 2 is a top view of a bearing mold, and this embodiment provides a tooling for replacing a knuckle bearing of a top plate of a through passage of an urban rail vehicle, including a positioning device 100 and a pushing device 200, where the positioning device 100 includes a bearing mold, the bearing mold is provided with a plurality of stepped holes 110, each stepped hole 110 includes an inner hole 1102 and an outer hole 1101, the diameter of each outer hole 1101 is greater than that of each inner hole 1102, and each inner hole 1102 abuts against the knuckle bearing; the pushing device 200 includes a push rod 210 slidably disposed in the stepped hole 110, a center line of the push rod 210 coincides with a center line of the stepped hole 110, and the push rod 210 can reciprocate along the center line of the stepped hole 110. The positioning device 100 is used for positioning a joint bearing, the joint bearing comprises an outer ring body 9, an inner ring body 10 and a shaft 8, and the positioning device 100 is used for accurately positioning the rotating shaft 8, the inner ring body 10 and the outer ring body 9 so that the transverse offset cannot occur when the rotating shaft is subjected to a load in the vertical direction. The pushing device 200 is used for mounting and dismounting the inner ring 10 and the rotating shaft 8, and the mounting and dismounting efficiency is improved. The bearing mold is provided with a plurality of stepped holes 110, an outer hole 1101 of the stepped hole 110 is used for accurately positioning the outer ring body 9, and an inner hole 1102 is used for positioning the rotating shaft 8 and the inner ring body 10. The outer diameters of the outer ring body 9 and the inner ring body 10 are both larger than the diameter of the inner hole 1102, the outer diameter of the inner ring body 10 is larger than the diameter of the inner hole 1102, the inner diameter of the inner ring body 10 is smaller than the diameter of the inner hole 1102, and the axial length of the inner ring body 10 is larger than the axial length of the outer ring body 9, so that the joint bearing can be conveniently positioned by the inner hole 1102. The push rod 210 is used to push the rotating shaft 8 away from the inner ring 10 or fix the inner ring 10 and the rotating shaft 8. The push rod 210 overlaps the center line of the stepped hole 110, and the push rod 210 reciprocates along the center line, so that the rotating shaft 8 and the inner ring 10 can be easily attached and detached, and the inner ring 10 and the outer ring 9 can be prevented from moving laterally.

Referring to fig. 4, 5 and 8, in some embodiments of the present invention, an opening of the inner hole 1102 is circumferentially provided with an arc-shaped chamfer 120. The lateral wall of above-mentioned inner ring 10 is evagination arcwall face, and the inner wall of above-mentioned outer ring 9 is indent arcwall face, and above-mentioned inner ring 10 and above-mentioned outer ring 9 mutual rotation have seted up arc chamfer 120 at above-mentioned hole 1102 opening part corresponding to the evagination arcwall face of above-mentioned inner ring 10, and above-mentioned arc chamfer 120 is the arcwall face of indent, and the lateral wall of above-mentioned inner ring 10 is laminated with above-mentioned arc chamfer 120.

Referring to fig. 1, in some embodiments of the present invention, a base 400 is disposed below the positioning device 100, the base 400 includes a bottom plate 410, the bottom plate 410 is provided with a positioning hole 6, the push rod 210 faces the positioning hole 6, and a center line of any stepped hole 110 can move to coincide with a center line of the positioning hole 6. The base 400 is used to support the bearing mold, so as to greatly improve the stability of the bearing mold, and facilitate the installation and detachment of the inner ring 10 and the rotating shaft 8 by the push rod 210. The positioning hole 6 is used for positioning the stepped hole 110, so that the inner ring body 10 and the rotating shaft 8 can be conveniently installed. Above-mentioned a plurality of shoulder holes 110 can move to locating hole 6 departments in proper order, and when shoulder holes 110 and locating hole 6 were located same central line, promote above-mentioned push rod 210 and realize the installation and dismantle, very big promotion its work efficiency practices thrift manpower and materials.

Referring to fig. 3, in some embodiments of the present invention, the bottom plate 410 is provided with a guide groove 7, and the guide groove 7 is communicated with the positioning hole 6. The guide groove 7 is used for facilitating the installation and fixation of the rotating shaft 8 with the length greater than that of the stepped hole 110 when the rotating shaft 8 and the inner ring body 10 are installed and disassembled, and the application range of the device is widened. The guide groove 7 can be used as the reference of the bearing mould, so that the transverse displacement of the bearing mould is avoided, the positioning is accurate, and the mounting and the dismounting are convenient.

In some embodiments of the present invention, the positioning holes 6 are symmetrically provided with limiting plates 5 on both sides, the limiting plates 5 are parallel to the guiding grooves 7, and the carrying mold slides freely between the two limiting plates 5. Above-mentioned limiting plate 5 symmetry sets up in the both sides of above-mentioned locating hole 6, and this limiting plate 5 and above-mentioned guide way 7 parallel arrangement, and the length direction's of the above-mentioned mould that bears the weight of lateral wall and above-mentioned limiting plate 5 sliding friction are connected, and further, strengthen the precision of its location, very big promotion its performance.

In some embodiments of the present embodiment, a plurality of support rods 420 are vertically disposed on the bottom plate 410, and a stabilizing plate 430 is disposed at an end of each support rod 420 away from the bottom plate 410. The plurality of support rods 420 include four in this embodiment, the bottom plate 410 is a rectangular plate, the four support rods 420 are welded at four corners of the bottom plate 410, and the support rods 420 can support the bottom plate 410 to a certain height, so that the rotating shaft 8 can be suspended above the ground, thereby avoiding the rotating shaft 8 from being damaged by friction with the ground. In this embodiment, the stabilizing plate 430 is a circular plate, so as to increase the contact area between the supporting rod 420 and the ground, thereby avoiding damage to the ground during construction, and greatly improving the practicability of the device.

In some embodiments of the present embodiment, the bottom plate 410 is provided with a bracket 300, and the bracket 300 is detachably connected to the push rod 210. The holder 300 is used to support the pushing device 200, thereby reducing the burden on the user. The push rod 210 is detachably connected with the bracket 300, so that the device is convenient to produce and transport.

In some embodiments of the present invention, the bracket 300 is provided with a transverse plate 310, the push rod 210 penetrates through the transverse plate 310, and the push rod 210 is in threaded fit connection with the transverse plate 310. The transverse plate 310 is used for positioning and fixing the push rod 210, so that the push rod is more stable in operation, and the workpiece is prevented from being damaged in installation and disassembly due to deviation. The transverse plate 310 is fixed in position by the two vertical rods 320, so that the height of the transverse plate 310 can be adjusted, and the mounting and dismounting positions can be widened. The vertical rod 320 is provided with a limit nut (not shown) and a fixing nut (not shown) for fixing and limiting the horizontal plate 310. The push rod 210 and the transverse plate 310 reciprocate in a threaded connection mode, and the push rod 210 is rotated to move in the vertical direction, so that the disassembly and the assembly are realized, and the assembly is more stable compared with direct pushing.

Referring to fig. 6, in some embodiments of the present invention, the transverse plate 310 is provided with a positioning cylinder 11, the positioning cylinder 11 is sleeved on the push rod 210, a center line of the positioning cylinder 11 is overlapped with a center line of the stepped hole 110, and the push rod 210 reciprocates along the positioning cylinder 11. The positioning cylinder 11 is integrally formed with the transverse plate 310, and the positioning cylinder 11 is located at one side of the transverse plate 310 close to the bearing mold, so as to advance and position the push rod 210 in the moving direction thereof, thereby preventing the push rod 210 from moving laterally. The positioning cylinder 11 is located on the same axis as the push rod 210, the stepped hole 110, and the positioning hole 6.

In some embodiments of the present invention, the push rod 210 is provided with a rotating member at an end away from the bearing mold. The aforesaid rotates the piece and includes horizontal pole 220, and above-mentioned horizontal pole 220 is articulated with above-mentioned push rod 210, and this horizontal pole 220 can rotate to be convenient for accomodate with above-mentioned push rod 210 parallel, and above-mentioned horizontal pole 220 can move to push rod 210 top rather than perpendicular, forms the lever, conveniently rotates above-mentioned push rod 210 to pivot 8 positions, can be very big save user's physical stamina, very big promotion the device's practicality.

Referring to fig. 4 and 8, in use, the knuckle bearing to be disassembled is sequentially placed in the stepped hole 110 of the bearing mold, the stepped hole 110 of the bearing mold is pushed to be located at the same center line position as the positioning hole 6, the cross bar 220 is rotated to drive the push rod 210 to move towards the direction of the rotating shaft 8, so that the rotating shaft 8 is attached to the push rod 210, and then the cross bar 220 is rotated to fall off.

Example 2

Referring to fig. 7, the technical features of the present embodiment are substantially the same as those of embodiment 1; the following improvement is made on the pushing device 200, in this embodiment, the pushing device 200 includes a cross bar 220, a hydraulic device 230, a push rod 210 and a thimble 240, the hydraulic device 230 is disposed between the cross bar 220 and the push rod 210, the push rod 210 is of a hollow structure, the push rod 210 is hermetically sealed and disposed outside the thimble 240, an output end of the hydraulic device 230 is connected with the thimble 240, an input end of the hydraulic device 230 is connected with the cross bar 220, and the hydraulic mechanism can drive the thimble 240 to the rotating shaft 8, so as to implement the installation and the removal of the rotating shaft 8. The horizontal plate 310 is used to adjust the position between the push rod 210 and the bearing mold, and is suitable for mounting and dismounting bearings and the rotating shaft 8 with more sizes, thereby enlarging the application range of the bearing and the rotating shaft. In addition, the practical use of the hydraulic device 230 can reduce the requirement on the strength of the practical user, and greatly improve the practical performance.

Referring to fig. 4 and 8, when in use, the gas in the hydraulic device 230 is increased continuously by pressing the cross rod 220 up and down, the thimble 240 is pushed slowly until the rotating shaft 8 abuts against, and the cross rod 220 is pressed continuously to push the rotating shaft 8 away from or close to the inner ring 10.

To sum up, the embodiment of the utility model provides a city rail vehicle through-passage roof joint bearing changes frock, including positioner 100 and thrust unit 200, positioner 100 includes bearing die, has seted up a plurality of shoulder holes 110 on the bearing die, and shoulder hole 110 includes hole 1102 and outer hole 1101, and the diameter of outer hole 1101 is greater than the diameter of hole 1102, and hole 1102 and joint bearing butt; the pushing device 200 includes a push rod 210, a center line of the push rod 210 is the same as a center line of the stepped hole 110, and the push rod 210 can reciprocate along the center line of the stepped hole 110. The positioning device 100 is used for positioning a joint bearing, the joint bearing comprises an outer ring body 9, an inner ring body 10 and a rotating shaft 8, and the positioning device 100 is used for accurately positioning the rotating shaft 8, the inner ring body 10 and the outer ring body 9 so that the transverse offset cannot occur when the rotating shaft is subjected to a load in the vertical direction. The pushing device 200 is used for mounting and dismounting the inner ring 10 and the rotating shaft 8, and the mounting and dismounting efficiency is improved. The bearing mold is provided with a plurality of stepped holes 110, an outer hole 1101 of the stepped hole 110 is used for accurately positioning the outer ring body 9, and an inner hole 1102 is used for positioning the rotating shaft 8 and the inner ring body 10. The outer diameters of the outer ring body 9 and the inner ring body 10 are both larger than the diameter of the inner hole 1102, the outer diameter of the inner ring body 10 is larger than the diameter of the inner hole 1102, the inner diameter of the inner ring body 10 is smaller than the diameter of the inner hole 1102, and the axial length of the inner ring body 10 is larger than the axial length of the outer ring body 9, so that the joint bearing can be conveniently positioned by the inner hole 1102. The push rod 210 is used to push the rotating shaft 8 away from the inner ring 10 or fix the inner ring 10 and the rotating shaft 8. The push rod 210 and the stepped hole 110 have the same center line position, and the push rod 210 reciprocates along the center line direction, so that the rotating shaft 8 and the inner ring body 10 can be conveniently mounted and dismounted, and the inner ring body 10 and the outer ring body 9 can be prevented from moving transversely. Consequently, this frock is changed to city rail vehicle link up roof joint bearing, it can make the operation more simple and convenient, reduces operator's degree of dependence to its work efficiency of promotion that can be very big.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A tool for replacing a joint bearing of a top plate of a run-through passage of an urban rail vehicle is characterized by comprising a positioning device and a pushing device, wherein the positioning device comprises a bearing mold, a plurality of stepped holes are formed in the bearing mold, each stepped hole comprises an inner hole and an outer hole, and the inner hole is used for being abutted against the joint bearing;

the pushing device comprises a push rod which is arranged in the stepped hole in a sliding mode, the center line of the push rod is overlapped with the center line of the stepped hole, and the push rod can reciprocate along the center line of the stepped hole.

2. The tool for replacing the knuckle bearing of the top plate of the urban rail vehicle through passage is characterized in that an opening of the inner hole is of an arc-shaped chamfer structure.

3. The tool for replacing the knuckle bearing of the top plate of the through passage of the urban rail vehicle as claimed in claim 1, wherein a base is arranged below the positioning device, the base comprises a bottom plate, the bottom plate is provided with a positioning hole, the push rod is opposite to the positioning hole, and the center line of any stepped hole can move to be coincident with the center line of the positioning hole.

4. The tool for replacing the knuckle bearing of the top plate of the urban rail vehicle through passage is characterized in that a guide groove is formed in the bottom plate and communicated with the positioning hole.

5. The tool for replacing the knuckle bearing of the top plate of the urban rail vehicle through passage according to claim 4, wherein limiting plates are symmetrically arranged on two sides of the positioning hole and are parallel to the guide groove.

6. The tool for replacing the knuckle bearing of the top plate of the urban rail vehicle through passage is characterized in that a plurality of supporting rods are vertically arranged on the bottom plate, and stabilizing plates are arranged at the ends, far away from the bottom plate, of the supporting rods.

7. The tool for replacing the knuckle bearing of the top plate of the urban rail vehicle through passage is characterized in that a support is arranged on the bottom plate and detachably connected with the push rod.

8. The tool for replacing the knuckle bearing of the top plate of the urban rail vehicle through passage is characterized in that a transverse plate is arranged on the support, the push rod penetrates through the transverse plate, and the push rod is in threaded fit connection with the transverse plate.

9. The tool for replacing the knuckle bearing of the top plate of the urban rail vehicle through passage according to claim 8, wherein a positioning barrel is arranged on the transverse plate, the positioning barrel is sleeved on the push rod, the center line of the positioning barrel is overlapped with the center line of the stepped hole, and the push rod reciprocates along the positioning barrel.

10. The tool for replacing the knuckle bearing of the top plate of the urban rail vehicle through passage is characterized in that a rotating piece is arranged at one end, away from the bearing mold, of the push rod.

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