CN217575210U - Automatic coupler guide rod overhauling device for motor train unit - Google Patents

Abstract

The utility model provides an automatic coupler guide rod overhauling device for a motor train unit, which comprises a base, a clamp, a pushing assembly and a scale; the base is detachably connected to the maintenance platform; the fixture is fixedly connected to the base and used for supporting and horizontally clamping the guide rod to be overhauled and adjusted; the pushing assembly is fixedly connected to the base or the clamp, and the output end of the pushing assembly is abutted against the head end of the rod core of the guide rod along the axial direction of the guide rod and is used for pushing the rod core towards the tail end of the guide rod; the scale is arranged on the base or the clamp along the axial direction of the guide rod and is used for measuring the distance of the tail end of the rod core extending out of the tail end of the shell of the guide rod. The utility model provides an automatic coupling guide bar of EMUs overhauls device can improve maintenance efficiency, reduces operating personnel's intensity of labour, because the accommodation process guide bar only bears axial jacking force moreover, consequently can stop because of the guide bar bears the potential safety hazard of great torsion slippage.

Description

Automatic coupler guide rod overhauling device for motor train unit

Technical Field

The utility model belongs to the technical field of the EMUs overhaul, concretely relates to EMUs automatic coupling guide bar overhauls device.

Background

The automatic coupler of the motor train unit can realize automatic coupling among the motor train units, and the mechanical connecting part of the automatic coupler has the functions of keeping a certain train distance and transmitting and buffering longitudinal impact and vibration of the motor train unit in the running process. Wherein, the guide bar can make the convex cone of the coupler align with the ratchet in the automatic coupler coupling process to realize the locking state of the coupler coupling, and the distance between the head end of the bar core of the guide bar and the coupler coupling surface needs to be kept as 100 ^-1 mm, otherwise, the automatic coupler coupling fault can be caused, and the guide rod needs to be periodically overhauled to ensure the normal running of the vehicle.

The currently common adjustment method is as follows: the guide rod is fixed on the maintenance platform by adopting a clamp, then two operators are matched with and install the groove-shaped nuts of the guide rod, usually, one groove is rotated by the groove-shaped nuts to drive the rod core to extend into the shell by about 0.3mm, after the guide rod is installed, the head end of the rod core leans against the ratchet according to requirements, and then a ruler is used for measuring whether the distance between the head end of the rod core and the hook hanging face is 100 or not ^-1 mm, if unqualified then carry out secondary adjustment according to above-mentioned process, not only overhaul the inefficiency, because guide bar internally mounted has pressure spring, spring pressure is about 300N moreover, therefore very hard in the process of adjusting the cell type nut, still simultaneously along with because of the reason is because ofThe guide rod flies off from the clamp due to the fact that the force for screwing the groove-shaped nut is large (the guide rod can be subjected to large torsion).

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a EMUs automatic coupling guide bar overhauls device aims at reducing maintenance intensity of labour, avoids the potential safety hazard and improves maintenance efficiency.

In order to achieve the above object, the utility model adopts the following technical scheme: the automatic coupler guide rod overhauling device comprises a base, a clamp, a pushing assembly and a scale; the base is detachably connected to the maintenance platform; the fixture is fixedly connected to the base and used for supporting and horizontally clamping the guide rod to be overhauled and adjusted; the pushing assembly is fixedly connected to the base or the clamp, and the output end of the pushing assembly is abutted against the head end of the rod core of the guide rod along the axial direction of the guide rod and is used for pushing the rod core towards the tail end of the guide rod; the scale is arranged on the base or the clamp along the axial direction of the guide rod and is used for measuring the distance of the tail end of the rod core extending out of the tail end of the shell of the guide rod.

In one possible implementation, the clamp comprises a bracket and a locking and pressing assembly; the bracket is fixedly connected to the base and is provided with a clamping groove suitable for the shell to be embedded; the locking and pressing assembly is hinged to the side of the clamping groove along the axial direction of the guide rod, has a clamping state of being overturned to be pressed on the shell and locked with the bracket, and also has an opening state of being overturned upwards to the side of the clamping groove; the clamping state is used for fixing the guide rod on the support, and the opening state is used for embedding the guide rod into the clamping groove or taking out the guide rod from the clamping groove.

In some embodiments, the locking assembly comprises a connecting shaft, at least two locking rods, and at least two locking catches; the connecting shaft is connected to the bracket along the axial direction of the clamping groove and is positioned on the side of the clamping groove; at least two locking rods are distributed at intervals along the axial direction of the clamping groove, one end of each locking rod is rotatably connected with the connecting shaft, and the middle part of each locking rod is provided with a bent arc part which corresponds to the clamping groove and is suitable for embedding the shell; the at least two lock catches are distributed on the support at intervals along the axial direction of the clamping grooves and horizontally aligned with the locking rods along the radial direction of the clamping grooves respectively, and the lock catches and the connecting shaft are located on two sides of the clamping grooves respectively; when the clamping device is in a clamping state, one end of the locking rod, which is far away from the connecting shaft, is locked on the corresponding lock catch.

Illustratively, the lock catch comprises a connecting block and a resilient pin; the connecting block is fixedly connected to the bracket, a groove suitable for embedding the locking end of the locking rod is formed in the connecting block, and the groove horizontally penetrates through the connecting block along the radial direction of the clamping groove; the elastic pin is embedded on the groove wall on one side of the groove, and in a clamping state, the elastic pin is separated and blocked above the locking end of the locking rod.

For example, the connecting shaft is provided with a limiting plate, the limiting plate extends along the axial direction of the connecting shaft, and when the locking mechanism is in an opening state, each locking rod is abutted against the limiting plate.

In one possible implementation, the pushing assembly comprises a threaded sleeve, a screw rod and a top head; wherein, the threaded sleeve is fixedly connected to the base or the clamp along the axial direction of the guide rod; the screw rod is arranged on the screw sleeve in a penetrating way and is matched with the screw sleeve in a screwing way; the top is connected to one end of the screw rod in a rotating mode and used for abutting against the head end of the rod core.

In some embodiments, the pushing assembly further comprises an operating rod, one end of the operating rod is provided with a polygonal clamping hole, and one end of the screw rod, which is far away from the pushing head, is provided with a connecting column suitable for being embedded into the clamping hole.

Exemplarily, sliding connection has first blend stop on the scale, and the axial level of first blend stop perpendicular to scale extends, and the end of extending supports along the axial of guide bar and leans on in the tail end of pole core.

For example, a second barrier strip is slidably connected to the scale, the second barrier strip is parallel to the first barrier strip, and the second barrier strip abuts against the end wall of the tail end of the housing along the axial direction of the guide rod.

In some embodiments, the base comprises a connecting disc, a turntable, a clamping jaw and a top arm; wherein, the center of the connecting disc is provided with an L-shaped supporting rod which is vertically downward and horizontally bent and extended; the turntable is rotationally connected to the connecting disc and is used for supporting and fixing the clamp; the clamping jaw is connected to the vertical extending part of the supporting rod in an up-and-down sliding manner; the top arm penetrates through the horizontal extending part of the supporting rod and is in screwed connection and matching with the supporting rod, and the top arm is located below the clamping jaw and is used for being matched with the clamping jaw to clamp the table board of the maintenance platform.

The utility model provides an automatic coupling guide bar of EMUs overhauls device's beneficial effect lies in: compared with the prior art, the automatic coupler guide rod overhauling device for the motor train unit can fixedly connect the base to the overhauling platform when overhauling operation is carried out, and can be disassembled and stored after overhauling is finished, so that other overhauling project operation of the overhauling platform is prevented from being influenced; fix the guide bar through anchor clamps during the maintenance, then the operation top pushes away the subassembly, the output that pushes away the subassembly supports presses behind the pole core head end of guide bar, continue to push away then can drive the pole core to the shell internal motion of guide bar, meanwhile, because the pole core tail end of guide bar can stretch out from the other end of shell, consequently measure the distance that the pole core tail end stretches out the shell tail end through the scale, can confirm whether the adjustment of guide bar targets in place, only need after the adjustment targets in place the manual cell type nut of screwing the guide bar can, once adjust the success rate height, can improve maintenance efficiency, because the adjustment process need not to twist the cell type nut vigorously, not only can reduce operating personnel's intensity of labour, and because the guide bar only bears axial jacking force, consequently, can stop because of the guide bar bears the potential safety hazard of great torsion and slippage from anchor clamps.

Drawings

Fig. 1 is a schematic perspective view of an automatic coupler guide bar overhauling device of a motor train unit provided by an embodiment of the invention;

fig. 2 is a schematic perspective view of a clamp according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a locking and pressing assembly according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a lock catch according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a cross-sectional view and an exploded structure of a guide rod according to an embodiment of the present invention.

In the figure: 10. a base; 11. a connecting disc; 12. a turntable; 13. a support bar; 14. a clamping jaw; 15. a top arm; 20. a clamp; 21. a support; 211. a card slot; 22. a locking and pressing component; 221. a connecting shaft; 2211. a limiting plate; 222. a lock lever; 2221. a curved portion; 223. locking; 2231. connecting blocks; 2232. an elastic pin; 30. a pushing assembly; 31. a threaded sleeve; 32. a screw; 33. ejecting the head; 34. an operating lever; 321. connecting columns; 40. a scale; 41. a first barrier strip; 42. a second barrier strip; 50. a guide rod; 51. a rod core; 52. a housing; 53. a slotted nut.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, fig. 2 and fig. 5, the automatic coupler guide bar maintenance device for the motor train unit according to the present invention will now be described. The automatic coupler guide rod overhauling device for the motor train unit comprises a base 10, a clamp 20, a pushing assembly 30 and a scale 40; wherein, the base 10 is used for being detachably connected to the maintenance platform; the clamp 20 is fixedly connected to the base 10 and used for supporting and horizontally clamping a guide rod 50 to be overhauled and adjusted; the pushing assembly 30 is fixedly connected to the base 10 or the clamp 20, and the output end of the pushing assembly abuts against the head end of the rod core 51 of the guide rod 50 along the axial direction of the guide rod 50 and is used for pushing the rod core 51 towards the tail end of the guide rod 50; the scale 40 is provided on the base 10 or the jig 20 in the axial direction of the guide bar 50 for measuring the distance by which the rear end of the rod core 51 protrudes from the rear end of the housing 52 of the guide bar 50.

It should be noted that, in this embodiment, referring to fig. 5, based on the long-term experience accumulation of the maintainers, it is found that when the distance between the head end of the rod core 51 of the guide rod 50 and the coupler coupling surface satisfies L1=1000-1mm, the distance L2=15+10mm that the tail end of the rod core 51 extends out of the tail end of the housing 52, therefore, when the automatic coupler guide rod overhauling device for the motor train unit provided in this embodiment is used for overhauling operation, the measurement standard value L2 is used as the measurement standard value of the scale 40 and is used as the initial judgment basis for whether the guide rod 50 is adjusted in place, which not only facilitates measurement, but also has a high success rate of primary adjustment, and certainly, after the final adjustment is completed, a secondary verification needs to be performed on the vehicle.

Compared with the prior art, the maintenance device for the guide rod of the automatic coupler of the motor train unit, provided by the embodiment, has the advantages that the base 10 can be fixedly connected to the maintenance platform during maintenance operation, and can be disassembled and stored after maintenance is finished, so that other maintenance project operations of the maintenance platform are prevented from being influenced; during maintenance, the guide rod 50 is fixed through the clamp 20, then the pushing assembly 30 is operated, when the output end of the pushing assembly 30 is abutted against and pressed at the head end of the rod core 51 of the guide rod 50, the rod core 51 is driven to move towards the inside of the shell 52 of the guide rod 50 by continuing pushing, meanwhile, the tail end of the rod core 51 of the guide rod 50 extends out from the other end of the shell 52, the distance from the tail end of the rod core 51 to the tail end of the shell 52 is measured through the scale 40, whether the guide rod 50 is adjusted in place can be determined, only the groove nut 53 of the guide rod 50 needs to be manually screwed after the guide rod 50 is adjusted in place, the success rate of one-time adjustment is high, the maintenance efficiency can be improved, the groove nut 53 does not need to be screwed vigorously in the adjustment process, the labor intensity of operators can be reduced, and the potential safety hazard of slipping from the clamp 20 due to the fact that the guide rod 50 only bears axial pushing force can be avoided.

In some embodiments, referring to fig. 2, the clamp 20 includes a bracket 21 and a latch assembly 22; the bracket 21 is fixedly connected to the base 10 and is provided with a clamping groove 211 suitable for the shell 52 to be embedded; the locking and pressing component 22 is hinged to the side of the clamping groove 211 along the axial direction of the guide rod 50, has a clamping state of being turned over to be pressed on the shell 52 and locked with the bracket 21, and also has an opening state of being turned over to the side of the clamping groove 211; the clamping state is used for fixing the guide rod 50 on the bracket 21, and the opening state is used for embedding the guide rod 50 into the clamping groove 211 or taking out the guide rod 50 from the clamping groove 211.

After the locking is released, the locking assembly 22 is turned upwards to place the guide rod 50 into the clamping groove 211, then the locking assembly 22 is pressed downwards to enable the rest clamping grooves 211 to be matched with and clamp the guide rod 50, then the locking assembly 22 is kept in a clamping state to be locked with the support 21, an operator can directly operate the pushing assembly 30 to adjust the position of the rod core 51, the overhauling operation can be completed by one person, and the labor intensity is low.

As an embodiment of the above-mentioned locking assembly 22, please refer to fig. 2 and fig. 3, the locking assembly 22 includes a connecting shaft 221, at least two locking rods 222, and at least two locking buckles 223; the connecting shaft 221 is connected to the bracket 21 along the axial direction of the slot 211 and is located on the side of the slot 211; at least two locking rods 222 are distributed at intervals along the axial direction of the clamping groove 211, one end of each locking rod 222 is rotatably connected with the connecting shaft 221, and the middle part of each locking rod 222 is provided with a curved part 2221 which corresponds to the clamping groove 211 and is suitable for the shell 52 to be embedded; at least two lock catches 223 are distributed on the support 21 at intervals along the axial direction of the clamping groove 211 and horizontally aligned with the locking rods 222 along the radial direction of the clamping groove 211, and the lock catches 223 and the connecting shaft 221 are located on two sides of the clamping groove 211 respectively; in the clamped state, one end of the lock lever 222 away from the connecting shaft 221 is locked to the corresponding lock 223.

The guide rod 50 is supported and pressed by the at least two locking rods 222 which are distributed along the axial direction of the connecting shaft 221 at intervals, so that the axial clamping length of the guide rod 50 can be increased, the axial fixing reliability of the guide rod 50 can be improved, the guide rod 50 can be prevented from twisting and separating from the clamping groove 211, the clamping stability and reliability of the guide rod 50 can be improved, and potential safety hazards can be avoided.

As a specific structure of the lock 223, please refer to fig. 4, the lock 223 includes a connecting block 2231 and a resilient pin 2232; the connecting block 2231 is fixedly connected to the bracket 21, a groove suitable for the locking end of the locking rod 222 to be embedded into is formed in the connecting block 2231, and the groove horizontally penetrates through the connecting block 2231 along the radial direction of the clamping groove 211; the elastic pin 2232 is fitted into one side wall of the groove, and in the clamped state, the elastic pin 2232 is blocked above the locking end of the locking rod 222.

The notch of recess can be opened to the flexible end of pressing elastic pin 2232, then in pressing the locking end of locking pole 222 into the recess, unclamp elastic pin 2232 and can separate the fender through the flexible end auto-eject of elastic pin 2232 and to the notch of recess to the locking end formation locking of locking pole 222, easy operation is laborsaving, and locking state is reliable and stable.

In some possible implementations, referring to fig. 3, the connection shaft 221 is provided with a limit plate 2211, the limit plate 2211 extends along the axial direction of the connection shaft 221, and in the open state, each locking rod 222 abuts against the limit plate 2211. The limiting plate 2211 is arranged, so that the locking rod 222 can be prevented from being opened to an excessive position, and the operation convenience is improved.

In some embodiments, the pushing assembly 30 is structured as shown in fig. 1, and the pushing assembly 30 includes a threaded sleeve 31, a threaded rod 32 and a plug 33; wherein, the threaded sleeve 31 is fixedly connected to the base 10 or the clamp 20 along the axial direction of the guide rod 50; the screw 32 is arranged on the threaded sleeve 31 in a penetrating way and is matched with the threaded sleeve 31 in a screwing way; the top head 33 is rotatably connected to one end of the screw rod 32 and is used for pressing against the head end of the rod core 51. It should be understood that, since the direct knob slot nut 53 will increase the rotation resistance due to the interference friction between the direct knob slot nut and the end wall of the housing 52, such a manner is not only laborious, but also easily drives the housing 52 to rotate, thereby affecting the fixing stability, based on such a situation, in this embodiment, the screw 32 can be rotated to move in the direction away from or close to the guide rod 50 in the screw sleeve 31, thereby driving the top 33 to push or keep away from the head end of the rod core 51, since the top 33 and the end of the screw 32 are in a rotating fit, a stable abutting state between the top 33 and the head end of the rod core 51 in the pushing process can be ensured, thereby avoiding the top 33 rotating together with the screw 32 to affect the clamping stability of the guide rod 50, the operation is simple and labor-saving, and the safety is high.

It should be noted that, in the present embodiment, the pushing assembly 30 further includes an operating rod 34, one end of the operating rod 34 is provided with a polygonal clipping hole, and one end of the screw 32 far away from the plug 33 is provided with a connecting column 321 suitable for being inserted into the clipping hole. Inlay the dress cooperation with the card hole of action bars 34 and spliced pole 321 and can directly rotate screw rod 32 when overhauing, convenient laborsaving can pull down action bars 34 after overhauing the completion and accomodate to sparingly accomodate occupation space.

Specifically, in order to facilitate the measuring operation, in the present embodiment, referring to fig. 1, a first bar 41 is slidably connected to the scale 40, the first bar 41 horizontally extends perpendicular to the axial direction of the scale 40, and the extending end abuts against the tail end of the rod core 51 in the axial direction of the guide rod 50; a second bar 42 is slidably connected to the scale 40, the second bar 42 is parallel to the first bar 41, and the second bar 42 abuts against the end wall of the tail end of the housing 52 along the axial direction of the guide rod 50.

The measurement operation can be realized by independently adopting the first barrier strip 41, specifically, after the guide rod 50 is fixed, firstly, the first barrier strip 41 is slid to abut against the tail end of the shell 52 to record the scale of the staff gauge 40, then, the first barrier strip 41 is slid to abut against the tail end of the rod core 51, and the extending distance of the rod core 51 can be obtained by observing the scale of the staff gauge 40 again in the process of adjusting the guide rod 50 and comparing the scale with the previous scale; certainly, in order to improve the convenience of operation measurement, multiplicable second blend stop 42 is direct to be contradicted with the tail end of shell 52 under the clamping state, keeps first blend stop 41 to contradict with the tail end of pole core 51 simultaneously, need not to carry out scale record of scale 40, only need in the accommodation process through first blend stop 41 and second blend stop 42 aim at two scale difference of scale 40 can, measure simple and conveniently, can improve maintenance efficiency.

Optionally, referring to fig. 1, the base 10 in this embodiment is configured such that the base 10 includes a connection plate 11, a rotation plate 12, a clamping jaw 14, and a top arm 15; wherein, the center of the connecting disc 11 is provided with an L-shaped supporting rod 13 which is vertically downward and horizontally bent and extended; the turntable 12 is rotatably connected to the connecting disc 11 and is used for supporting and fixing the clamp 20; the clamping jaw 14 is connected with the vertical extending part of the supporting rod 13 in an up-and-down sliding manner; the top arm 15 penetrates through the horizontal extending part of the supporting rod 13 and is in screwed connection and matching with the supporting rod 13, and the top arm 15 is located below the clamping jaw 14 and is used for being matched with the clamping jaw 14 to clamp the table top of the maintenance platform.

Can adjust the distance between its top and the clamping jaw 14 through rotatory top arm 15 during fixed to press from both sides tightly or loosen the mesa of overhauing the platform, fixed stable and easy dismounting, connection pad 11 is fixed to be accomplished the back and can drive anchor clamps 20 horizontal rotation through rotating carousel 12, thereby drives guide bar 50 and rotates to the angle that is fit for the operating personnel operation, helps improving work efficiency, reduces intensity of labour.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. EMUs automatic coupling guide bar overhauls device, its characterized in that includes:

the base is detachably connected to the maintenance platform;

the fixture is fixedly connected to the base and used for supporting and horizontally clamping the guide rod to be overhauled and adjusted;

the pushing assembly is fixedly connected to the base or the clamp, and the output end of the pushing assembly is abutted against the head end of the rod core of the guide rod along the axial direction of the guide rod and is used for pushing the rod core towards the tail end of the guide rod;

and the scale is arranged on the base or the clamp along the axial direction of the guide rod and is used for measuring the distance of the tail end of the rod core extending out of the tail end of the shell of the guide rod.

2. The automatic coupler guide rod overhauling device for motor train units according to claim 1, wherein the clamp comprises:

the bracket is fixedly connected to the base and provided with a clamping groove suitable for the shell to be embedded;

the locking and pressing assembly is hinged to the side of the clamping groove along the axial direction of the guide rod, has a clamping state of being turned over to be pressed on the shell and locked with the bracket, and also has an opening state of being turned upwards to the side of the clamping groove;

the clamping state is used for fixing the guide rod on the support, and the opening state is used for embedding the guide rod into the clamping groove or taking out the guide rod from the clamping groove.

3. The automatic coupler guide rod overhauling device for motor train units according to claim 2, wherein the locking and pressing assembly comprises:

the connecting shaft is connected to the bracket along the axial direction of the clamping groove and is positioned on the side of the clamping groove;

the locking rods are distributed at intervals along the axial direction of the clamping groove, one end of each locking rod is rotatably connected with the connecting shaft, and the middle part of each locking rod is provided with a bent arc part which corresponds to the clamping groove and is suitable for embedding the shell;

the at least two lock catches are distributed on the support at intervals along the axial direction of the clamping groove and are horizontally aligned with the locking rods along the radial direction of the clamping groove respectively, and the lock catches and the connecting shaft are located on two sides of the clamping groove respectively;

when the clamping state is achieved, one end, far away from the connecting shaft, of the locking rod is locked on the corresponding lock catch.

4. The automatic coupler guide rod overhauling device for motor train units according to claim 3, wherein the lock catch comprises:

the connecting block is fixedly connected to the bracket, a groove suitable for embedding the locking end of the locking rod is formed in the connecting block, and the groove horizontally penetrates through the connecting block along the radial direction of the clamping groove;

and the elastic pin is embedded on the groove wall on one side of the groove, and in the clamping state, the elastic pin is blocked above the locking end of the locking rod.

5. The automatic coupler guide rod overhauling device for the motor train unit according to claim 3, wherein a limiting plate is arranged on the connecting shaft, the limiting plate extends along the axial direction of the connecting shaft, and each locking rod abuts against the limiting plate in the opening state.

6. The automatic coupler guide rod overhauling device for motor train units according to claim 1, wherein the pushing assembly comprises:

the screw sleeve is fixedly connected to the base or the clamp along the axial direction of the guide rod;

the screw rod penetrates through the screw sleeve and is in screwed fit with the screw sleeve;

and the top is rotationally connected with one end of the screw rod and is used for abutting against the head end of the rod core.

7. The automatic coupler guide rod overhauling device for the motor train unit according to claim 6, wherein the pushing assembly further comprises an operating rod, a polygonal clamping hole is formed in one end of the operating rod, and a connecting column suitable for being embedded into the clamping hole is formed in one end, far away from the top, of the screw rod.

8. The automatic coupler guide rod overhauling device for the motor train unit according to claim 1, wherein a first blocking strip is connected to the scale in a sliding mode, the first blocking strip horizontally extends perpendicular to the axial direction of the scale, and the extending end abuts against the tail end of the rod core along the axial direction of the guide rod.

9. The automatic coupler guide rod overhauling device for the motor train unit according to claim 8, wherein a second blocking strip is connected onto the scale in a sliding manner, the second blocking strip is parallel to the first blocking strip, and the second blocking strip abuts against the tail end wall of the shell along the axial direction of the guide rod.

10. The automatic coupler knuckle overhauling device for motor train units according to any one of claims 1 to 9, wherein the base comprises:

the center of the connecting disc is provided with an L-shaped supporting rod which vertically bends and extends downwards and horizontally;

the turntable is rotationally connected to the connecting disc and is used for supporting and fixing the clamp;

the clamping jaw is connected to the vertical extending part of the supporting rod in an up-and-down sliding manner;

the top arm wears to locate the horizontal extension of bracing piece, and with the bracing piece connects the cooperation soon, the top arm is located the below of clamping jaw, be used for with the clamping jaw cooperation is pressed from both sides tightly the mesa of maintenance platform.

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