Pull rod body hole center distance detection device for railway vehicle accessories

By designing a device for detecting the center distance of holes in tie rods for rail vehicle components, and utilizing a detection frame and laser detection technology, the problem of detecting the axle deviation of the safety wheel connection at both ends of the tie rod was solved, thus improving the assembly accuracy of the parts.

CN223741510UActive Publication Date: 2025-12-30CHANGCHUN BAOZHUO RAIL TRANSIT RUBBER TECH CO LTD
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Patent Information

Application Number
CN202520416380.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2025-12-30
Estimated Expiration
2035-03-11

AI Technical Summary

Technical Problem

In the manufacturing of rail vehicles, existing technologies make it difficult to effectively detect and verify whether the inner diameter axes of the safety wheel connection at both ends of the tie rod are on the same axis, which affects the assembly accuracy of subsequent parts.

Method used

A device for detecting the center distance of holes in tie rods for rail vehicle components was designed, including a detection frame, a detection transmitter, and a detection receiver. The tie rod housing is held at both ends by clamping rollers, and the center distance of holes and the axis deviation are detected by a laser transmitter and a photosensitive receiver. The results are displayed in conjunction with the displacement detection host.

Benefits of technology

It enables precise detection of the hole center distance and shaft center deviation at the connection parts of the safety wheels at both ends of the tie rod housing, ensuring the accuracy requirements of subsequent parts assembly and improving production quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a pull rod body hole center distance detection device for railway vehicle accessories. The pull rod body hole center distance detection device comprises a detection connecting frame, a detection emitter, a detection receiver and a displacement detection host. The detection connecting frame is divided into a first detection connecting frame and a second detection connecting frame, and the detection emitter is fixed on the first detection connecting frame; the detection receiver is fixed on the second detection connecting frame; a clamping shaft roller on the first detection connecting frame is clamped on the outer diameter of one end of the pull rod body shell; a clamping shaft roller on the second detection connecting frame is clamped on the outer diameter of the other end of the pull rod body shell; the detection transmitter and the detection receiver are electrically connected with the displacement detection host through cables; the two ends of the pull rod body shell are subjected to static or rotary detection through the detection emitter and the detection receiver, and the hole center distance and the axis deviation value of the two ends of the pull rod body shell are detected.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the rail vehicle manufacturing auxiliary equipment technical field, concretely relates to a kind of pull rod body hole center distance detection device for rail vehicle accessories. BACKGROUND

[0002] The pull rod body used on monorail suspended rail vehicle is an important component;The pull rod body has large span, and safety wheel connecting parts are provided at both ends of the pull rod body;The safety wheel connecting parts are connected with safety wheels;When the pull rod body shell is produced and processed, the precision required for processing the pull rod body shell is large, so that the inner diameters of the safety wheel connecting parts at both ends are on the same axis;Therefore, a device capable of checking and detecting the inner diameters of the safety wheel connecting parts at both ends is required. SUMMARY

[0003] The present application aims to solve the above problems, and provides a kind of pull rod body hole center distance detection device for rail vehicle accessories.

[0004] A kind of pull rod body hole center distance detection device for rail vehicle accessories, detection connecting frame, detection transmitter, detection receiver, displacement detection host;The detection connecting frame is divided into first detection connecting frame, second detection connecting frame, and the first detection connecting frame and the second detection connecting frame are the same structure;Centripetal spiral paddle and multiple clamping sliding blocks are provided in the first detection connecting frame and the second detection connecting frame, and the multiple clamping sliding blocks slide along the normal line of detection connecting frame by centripetal spiral paddle;The detection transmitter is fixed on the first detection connecting frame;The detection receiver is fixed on the second detection connecting frame;

[0005] The pull rod body shell is respectively provided with left safety wheel connecting part and right safety wheel connecting part at both ends;The clamping shaft roller on the first detection connecting frame is clamped on the outer diameter of the left safety wheel connecting part;The clamping shaft roller on the second detection connecting frame is clamped on the outer diameter of the right safety wheel connecting part;The detection transmitter and the detection receiver are electrically connected with the displacement detection host by cable;The detection transmitter and the detection receiver detect the hole center distance and the axis deviation value at both ends of the pull rod body shell statically or rotationally.

[0006] The detection connecting frame includes detection chassis, planetary gear, clamping pulley, clamping sliding block and detection upper frame;The detection chassis and the detection upper frame are both hexagonal metal components, and the detection upper frame is fixed on the detection chassis;The six sides of the detection chassis and the detection upper frame are concave;There are through holes in the center of the detection chassis and the center of the detection upper frame;Multiple planetary gears are provided, and the shafts of the multiple planetary gears are connected to the center of the detection chassis;The inner diameter of the clamping pulley is provided with a gear ring that is sleeved with the multiple planetary gears;The upper end surface of the clamping pulley is provided with a centripetal spiral paddle;Six clamping sliding blocks are provided, and the centripetal spiral paddle can drive the six clamping sliding blocks to slide along the normal line of the detection upper frame.

[0007] The six concave surfaces of the detection chassis are chassis concave surfaces; the edge side of the detection chassis is provided with a plurality of support columns, and the plurality of support columns are respectively arranged at the intersection of two chassis concave surfaces; the center of the detection chassis is provided with a chassis inner sinking edge, and the through hole at the center of the detection chassis is a hexagonal connecting through hole; the hexagonal connecting through hole is arranged at the center of the chassis inner sinking edge; the axis of the hexagonal connecting through hole coincides with the axis of the detection chassis.

[0008] The six concave surfaces of the detection chassis are chassis concave surfaces; the edge side of the detection chassis is provided with a plurality of support columns, and the plurality of support columns are respectively arranged at the intersection of two chassis concave surfaces; the center of the detection chassis is provided with a chassis inner sinking edge, and the through hole at the center of the detection chassis is a hexagonal connecting through hole; the hexagonal connecting through hole is arranged at the center of the chassis inner sinking edge; the axis of the hexagonal connecting through hole coincides with the axis of the detection chassis.

[0009] The clamping and pushing wheel is a circular ring-shaped metal member; a pushing convex circle is arranged on the outer diameter of the clamping and pushing wheel; a centripetal spiral pushing piece is arranged on the upper end surface of the clamping and pushing wheel; the outer diameter of the clamping and pushing wheel is matched with the inner side gap of the plurality of support columns.

[0010] The lower end surface of the clamping sliding block is provided with a centripetal spiral groove, which can be sleeved on the centripetal spiral pushing piece; two clamping shaft rollers are arranged on the outer side end of the clamping sliding block; the six clamping sliding blocks are the same in structure, and the six clamping sliding blocks can slide in the six sliding block grooves respectively; the clamping shaft rollers on the six clamping sliding blocks can clamp the outer diameter of the pipe body or support the inner diameter of the pipe body.

[0011] The detection transmitter comprises a transmitter body, a transmitter positioning convex edge, a transmitter connecting edge, and a laser emission head; the transmitter positioning convex edge is arranged on the upper end of the transmitter body; the transmitter connecting edge is arranged on the side of the upper end of the transmitter body; the laser emission head is arranged at the center of the front end of the transmitter positioning convex edge; the transmitter positioning convex edge can be sleeved in the hexagonal connecting through hole.

[0012] The detection receiver comprises a receiver body, a receiver positioning convex edge, a receiver connecting edge, and a photosensitive receiver; the receiver positioning convex edge is arranged on the upper end of the receiver body; the receiver connecting edge is arranged on the side of the upper end of the receiver body; the photosensitive receiver is arranged at the center of the front end of the receiver body; the receiver positioning convex edge is sleeved in the hexagonal connecting through hole.

[0013] The technical scheme provides a kind of for rail vehicle accessory pull rod body hole center distance detection device, detection connecting frame, detection transmitter, detection receiver, displacement detection host;The detection connecting frame is divided into first detection connecting frame, second detection connecting frame, and detection transmitter is fixed on the first detection connecting frame;Detection receiver is fixed on the second detection connecting frame;The clamping shaft roller on the first detection connecting frame is clamped on the outer diameter of one end of pull rod body shell;The clamping shaft roller on the second detection connecting frame is clamped on the outer diameter of the other end of pull rod body shell;Detection transmitter and detection receiver are electrically connected with displacement detection host by cable;The both ends of pull rod body shell are detected statically or revolve by detection transmitter and detection receiver, and the hole center distance and axial deviation value of the both ends of pull rod body shell are detected. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a kind of detection connecting frame whole schematic diagram for rail vehicle accessory of the utility model;

[0015] Figure 2 It is the detection connecting frame structure schematic diagram for rail vehicle accessory of the utility model;

[0016] Figure 3 It is the detection upper frame structure schematic diagram for rail vehicle accessory of the utility model;

[0017] Figure 4 It is the clamping sliding block structure schematic diagram in the detection connecting frame for rail vehicle accessory of the utility model;

[0018] Figure 5 It is the clamping wheel schematic diagram in the detection connecting frame for rail vehicle accessory of the utility model;

[0019] Figure 6 It is the hole center distance detection transmitter schematic diagram for rail vehicle accessory of the utility model;

[0020] Figure 7 It is the hole center distance detection receiver schematic diagram for rail vehicle accessory of the utility model;

[0021] Figure 8 It is the detection state schematic diagram of the pull rod body hole center distance detection device for rail vehicle accessory of the utility model;

[0022] Figure 9 It is the hole center distance detection transmitter end schematic diagram of the pull rod body hole center distance detection device for rail vehicle accessory of the utility model;

[0023] Figure 10 It is the hole center distance detection receiver end schematic diagram for rail vehicle accessory of the utility model;

[0024] In the figure: 1, detection chassis, 11, chassis concave surface, 12, support column, 13, chassis inner sinking along, 14, hexagonal connecting through hole, 2, planetary gear, 3, clamping dial, 31, gear ring, 32, dial convex circle, 33, centripetal spiral dial, 4, clamping slider, 41, centripetal spiral groove, 42, clamping shaft roller, 43, sliding convex along, 5, detection upper frame, 51, upper frame concave surface, 52, slider slot, 521, sliding ear along, 53, annular through hole, 54, support ring, 56, bolt, 61, transmitter body, 62, transmitter positioning convex along, 63, transmitter connecting edge, 631, connecting screw through hole, 64, laser emitting head, 71, receiver body, 72, receiver positioning convex along, 73, receiver connecting edge, 74, light-sensitive receiver, 75, light-transmitting hole, 8, displacement detection host, 81, left connecting cable, 82, right connecting cable, 9, pull rod body shell, 91, left safety wheel connecting part, 92, right safety wheel connecting part. DETAILED DESCRIPTION

[0025] The technical scheme will be further clearly and completely described below in combination with the drawings of the technical scheme. The described embodiments are only a part of the embodiments in the technical scheme, but not all the embodiments. Based on the technical scheme, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] The hole center distance in the technical scheme is the distance between the centers of the circular ring safety wheel connecting parts at the two ends of the pull rod body shell. The distance between the centers of the two end safety wheel connecting parts and the center deviation directly affect the assembly precision of subsequent parts. Therefore, it is necessary to detect and correct them.

[0027] Embodiment 1: a detection connecting frame for hole center distance detection

[0028] Referring to Figures 1 to 5 The detection connecting frame for hole center distance detection comprises a detection chassis 1, a planetary gear 2, a clamping dial 3, a clamping slider 4 and a detection upper frame 5.

[0029] The detection chassis 1 is a hexagonal metal member. The six sides of the detection chassis 1 are all bottom chassis concave surfaces 11. The detection chassis 1 is provided with a plurality of support columns 12 at the sides. The plurality of support columns 12 are respectively arranged at the intersection of two bottom chassis concave surfaces 11. The six sides of the detection chassis 1 are all inner concave vertical surfaces. Two support columns 12 are arranged at the intersection of every two inner bottom chassis concave surfaces 11. The center of the detection chassis 1 is provided with a chassis inner sinking along 13. The center of the chassis inner sinking along 13 is provided with a hexagonal connecting through hole 14. The axis of the hexagonal connecting through hole 14 coincides with the axis of the detection chassis 1.

[0030] Each support column 12 is provided with a locking screw hole at the upper end.

[0031] The detection chassis 1 is provided with gear shafts, at least three gear shafts, in order to achieve more stable operation of the device, four gear shafts are provided in the embodiment, the four gear shafts have the same shaft diameter; the four gear shafts are arranged beside the inner sink 13 of the chassis, and the four gear shafts are arranged in a circular array with the shaft center of the detection chassis 1 as the center.

[0032] The planetary gear 2 is provided with four planetary gears 2, the four planetary gears 2 have the same tooth comb and structure; the four planetary gears 2 are respectively sleeved on the four gear shafts; that is, one planetary gear 2 is sleeved on each gear shaft.

[0033] The clamping wheel 3 is a circular ring-shaped metal member; the clamping wheel 3 is provided with a gear ring 31 on the inner diameter; the clamping wheel 3 is provided with a rotating convex circle 32 on the outer diameter; the clamping wheel 3 is provided with a centripetal spiral flake 33 on the upper end face; the gear ring 31 is sleeved on the four planetary gears 2; the outer diameter of the clamping wheel 3 is matched with the inner side gap of the plurality of support columns 12.

[0034] The clamping sliding block 4 is provided with six clamping sliding blocks 4, the six clamping sliding blocks 4 have the same structure;

[0035] The clamping sliding block 4 is provided with a centripetal spiral groove 41 on the lower end face, and the clamping sliding block 4 is provided with two clamping shaft rollers 42 on the outer side end; the clamping sliding block 4 is provided with a sliding convex edge 43 on both sides.

[0036] The detection upper frame 5 is a hexagonal metal member, the detection upper frame 5 corresponds to the detection chassis 1; the six side edges of the detection upper frame 5 are all upper frame concave surfaces 51, the upper frame concave surfaces 51 correspond to the chassis concave surfaces 11; the sliding block grooves 52 are arranged at the junctions of the two side upper frame concave surfaces 51; the detection upper frame 5 is provided with a ring-shaped through hole 53 at the center, and a support ring 54 is arranged below the ring-shaped through hole 53; the detection upper frame 5 is provided with six sliding block grooves 52 on the lower end face; the six sliding block grooves 52 are arranged in a circular array, and the center lines of the six sliding block grooves 52 are all on the normal line of the ring-shaped through hole 53;

[0037] The axis of the ring-shaped through hole 53 coincides with the axis of the hexagonal connecting through hole 14;

[0038] The sliding block groove 52 corresponds to the clamping sliding block 4; the sliding block groove 52 is provided with sliding lugs 521 on both sides; the sliding convex edge 43 can slide on the lug 521;

[0039] The sliding block groove 52 is provided with a bolt counterbore 55 on both sides, the plurality of bolt counterbores 55 of the detection upper frame 5 correspond to the locking screw holes on the support column 12 respectively, and the bolt counterbores 55 and the locking screw holes are connected through bolts 56;

[0040] The centripetal spiral groove 41 can be sleeved on the centripetal spiral flake 33; the clamping wheel 3 is twisted, so that the six clamping sliding blocks 4 simultaneously slide along the normal line of the detection upper frame 5.

[0041] The detection transmitter for hole center distance detection of the embodiment 2

[0042] Referring to the drawings Figure 6 As shown in the drawings, the detection transmitter for hole center distance detection comprises a transmitter body 61, a transmitter positioning protrusion 62, a transmitter connecting edge 63, and a laser emission head 64.

[0043] The transmitter positioning protrusion 62 is arranged at the upper end of the transmitter body 61; the transmitter connecting edge 63 is arranged at the side of the upper end of the transmitter body 61, and a connecting screw through hole 631 is arranged on the transmitter connecting edge 63.

[0044] The laser emission head 64 is arranged at the front end center of the transmitter positioning protrusion 62.

[0045] The transmitter positioning protrusion 62 is hexagonal, and the transmitter positioning protrusion 62 can be sleeved in the hexagonal connecting through hole 14 in the embodiment 1.

[0046] The transmitter positioning protrusion 62 is in transition fit with the hexagonal connecting through hole 14.

[0047] After the transmitter body 61 is powered on, a straight light beam can be emitted from the laser emission head 64.

[0048] The detection receiver for hole center distance detection of the embodiment 3

[0049] Referring to the drawings Figure 7 As shown in the drawings, the detection receiver for hole center distance detection comprises a receiver body 71, a receiver positioning protrusion 72, a receiver connecting edge 73, and a photosensitive receiver 74.

[0050] The receiver positioning protrusion 72 is arranged at the upper end of the receiver body 71; the receiver connecting edge 73 is arranged at the side of the upper end of the receiver body 71.

[0051] The receiver positioning protrusion 72 is the same in structure as the transmitter positioning protrusion 62; the receiver connecting edge 73 is the same in structure as the transmitter connecting edge 63.

[0052] The photosensitive receiver 74 is arranged at the front end center of the receiver body 71.

[0053] The receiver positioning protrusion 72 is in transition fit with the hexagonal connecting through hole 14.

[0054] After the photosensitive receiver 74 receives a laser beam, a feedback signal can be output.

[0055] A plurality of light transmission holes 75 are further arranged beside the photosensitive receiver 74; the plurality of light transmission holes 75 are all circular arcs, and the centers of the plurality of light transmission holes 75 coincide.

[0056] A kind of pull rod body hole center distance detection device for rail vehicle accessory

[0057] Referring to the drawings Figures 1 to 10 A kind of pull rod body hole center distance detection device for rail vehicle accessory, it includes: first detection connecting frame, detection transmitter, second detection connecting frame, detection receiver, displacement detection host 8;

[0058] The first detection connecting frame and the second detection connecting frame are the detection connecting frame for hole center distance detection described in embodiment 1;

[0059] The detection transmitter is the hole center distance detection transmitter described in embodiment 2;

[0060] The detection receiver is the hole center distance detection receiver described in embodiment 3;

[0061] The detection transmitter is fixed by screw at the center of first detection connecting frame;Detection receiver is fixed by screw at the center of second detection connecting frame;

[0062] Pull rod body shell 9 both ends are respectively equipped with left safety wheel connecting portion 91, right safety wheel connecting portion 92;First detection connecting frame is arranged on left safety wheel connecting portion 91;

[0063] The clamping shaft roller on the first detection connecting frame is clamped on the outer diameter of left safety wheel connecting portion 91, and first detection connecting frame can be rotated on left safety wheel connecting portion 91;

[0064] The clamping shaft roller on the second detection connecting frame is clamped on the outer diameter of safety wheel connecting portion 92;Second detection connecting frame can be rotated on right safety wheel connecting portion 92;

[0065] The left connecting cable 81 and the right connecting cable 82 are arranged on the two sides of displacement detection host 8;

[0066] The other end of left connecting cable 81 is connected with detection transmitter;The other end of right connecting cable 82 is connected with detection receiver;That is, detection transmitter and detection receiver are connected with displacement detection host 8 through connecting cable;

[0067] Display screen is arranged on displacement detection host 8, and display screen shows the light signal detected by photosensitive receiver 74, and display screen shows hole center distance and axis deviation value of left safety wheel connecting portion 91 and right safety wheel connecting portion 92;

[0068] Detection transmitter can be rotated on left safety wheel connecting portion 91 through first detection connecting frame;Detection receiver can be rotated on right safety wheel connecting portion 92 through second detection connecting frame;

[0069] When the left safety wheel connecting part 91 and the right safety wheel connecting part 92 have too large axial deviation, the laser emitter 64 emits a light beam through the light transmission hole 75; when the laser emitter 64 emits a light beam through the light transmission hole 75, it proves that the pull rod body shell 9 does not meet the minimum quality requirement, and the pull rod body shell 9 is unqualified;

[0070] The detection transmitter can rotate on the left safety wheel connecting part 91, and the detection receiver can rotate on the right safety wheel connecting part 92; the detection transmitter and the detection receiver rotate at both ends of the pull rod body shell 9, and the left safety wheel connecting part 91 and the right safety wheel connecting part 92 are statically or rotationally detected by the detection transmitter and the detection receiver at both ends of the pull rod body shell 9 to obtain the hole center distance and the axial deviation value.

Claims

1. A device for detecting the pitch of the body hole of a drawbar for a rail vehicle, characterized in that: Detection connecting frame, detection transmitter, detection receiver, displacement detection host (8); The detection connecting frame is divided into a first detection connecting frame and a second detection connecting frame, and the first detection connecting frame and the second detection connecting frame are the same in structure; The centripetal spiral shift piece and a plurality of clamping sliding blocks are arranged in the first detection connecting frame and the second detection connecting frame, the plurality of clamping sliding blocks slide along the normal line of the detection connecting frame through the centripetal spiral shift piece; The detection transmitter is fixed on the first detection connecting frame; The detection receiver is fixed on the second detection connecting frame; The left safety wheel connecting portion (91) and the right safety wheel connecting portion (92) are arranged at two ends of the pull rod body shell (9) respectively; The clamping shaft roller on the first detection connecting frame is clamped on the outer diameter of the left safety wheel connecting portion (91); The clamping shaft roller on the second detection connecting frame is clamped on the outer diameter of the right safety wheel connecting portion (92); The detection transmitter and the detection receiver are electrically connected with the displacement detection host (8) through a cable; The detection transmitter and the detection receiver detect the hole center distance and the shaft center deviation value at two ends of the pull rod body shell (9) statically or rotationally.

2. The device for detecting the pitch of the body hole of a drawbar for a rail vehicle accessory according to claim 1, characterized in that: The detection connecting frame comprises a detection base frame (1), a planetary gear (2), a clamping shift wheel (3), a clamping sliding block (4) and a detection upper frame (5); The detection base frame (1) and the detection upper frame (5) are both hexagonal metal members, and the detection upper frame (5) is fixed on the detection base frame (1); The six sides of the detection base frame (1) and the detection upper frame (5) are concave; The center of the detection base frame (1) and the center of the detection upper frame (5) are through holes; A plurality of planetary gears (2) are arranged, and the plurality of planetary gears (2) are connected to the center of the detection base frame (1); The clamping shift wheel (3) is internally provided with a gear ring (31) sleeved with the plurality of planetary gears (2); The upper end surface of the clamping shift wheel (3) is provided with a centripetal spiral shift piece (33); Six clamping sliding blocks (4) are arranged, and the centripetal spiral shift piece (33) can drive the six clamping sliding blocks (4) to slide along the normal line of the detection upper frame (5).

3. The device for detecting the pitch of the body holes of draw bars for rail vehicles according to claim 2, characterized in that: The six concaves of the detection base frame (1) are base frame concaves (11); A plurality of support columns (12) are arranged on the side of the detection base frame (1), and the plurality of support columns (12) are arranged at the intersection of two base frame concaves (11) respectively; A base frame inner sinking edge (13) is arranged at the center of the detection base frame (1), and the through hole at the center of the detection base frame (1) is a hexagonal connecting through hole (14); The hexagonal connecting through hole (14) is arranged at the center of the base frame inner sinking edge (13); The axis of the hexagonal connecting through hole (14) coincides with the axis of the detection base frame (1).

4. The device for detecting the pitch of the body holes of draw bars for rail vehicles according to claim 3, characterized in that: The six concaves of the detection upper frame (5) are upper frame concaves (51), and the upper frame concaves (51) correspond to the base frame concaves (11); The intersection of the two side upper frame concaves (51) is provided with a sliding block groove (52); The center of the detection upper frame (5) is provided with a ring-shaped through hole (53), and a support ring (54) is arranged below the ring-shaped through hole (53); The support ring (54) can abut against the base frame inner sinking edge (13); The lower end surface of the detection upper frame (5) is provided with six sliding block grooves (52); The six sliding block grooves (52) are arranged in a ring shape, and the center lines of the six sliding block grooves (52) are all on the normal line of the ring-shaped through hole (53).

5. The device for detecting the pitch of the body holes of draw bars for rail vehicles according to claim 4, characterized in that: The clamping dial (3) is a circular ring metal member; a dial convex circle (32) is arranged on the outer diameter of the clamping dial (3); a centripetal spiral dial piece (33) is arranged on the upper end surface of the clamping dial (3); the outer diameter of the clamping dial (3) is matched with the inner side gap of a plurality of support columns (12).

6. The device for detecting the hole pitch of a drawbar body for a railcar accessory according to claim 5, characterized by: The lower end surface of the clamping slider (4) is provided with a centripetal spiral groove (41), which can be sleeved on the centripetal spiral dial piece (33); the outer side end of the clamping slider (4) is provided with two clamping shaft rollers (42); the six clamping sliders (4) are the same in structure, and the six clamping sliders (4) can slide in the six slider grooves (52) respectively; the clamping shaft rollers (42) on the six clamping sliders (4) can clamp the outer diameter of the pipe body or support the inner diameter of the pipe body.

7. The device for detecting the hole pitch of a drawbar body for a railcar accessory according to claim 6, characterized in that: The detection transmitter comprises a transmitter body (61), a transmitter positioning convex edge (62), a transmitter connecting edge (63), and a laser emission head (64); the transmitter positioning convex edge (62) is arranged on the upper end of the transmitter body (61); the transmitter connecting edge (63) is arranged on the upper end side of the transmitter body (61); the laser emission head (64) is arranged at the front end center of the transmitter positioning convex edge (62); and the transmitter positioning convex edge (62) can be sleeved in the six-rib connecting through hole (14).

8. The device for detecting the pitch of the body hole of a drawbar for a rail vehicle accessory according to claim 6, characterized in that: The detection receiver comprises a receiver body (71), a receiver positioning convex edge (72), a receiver connecting edge (73), and a photosensitive receiver (74); the receiver positioning convex edge (72) is arranged on the upper end of the receiver body (71); the receiver connecting edge (73) is arranged on the upper end side of the receiver body (71); the photosensitive receiver (74) is arranged at the front end center of the receiver body (71); and the receiver positioning convex edge (72) is sleeved in the six-rib connecting through hole (14).