CN210231066U

CN210231066U - Vehicle body correction instrument

Info

Publication number: CN210231066U
Application number: CN201920972023.7U
Authority: CN
Inventors: Ning Ma; 马宁
Original assignee: Beijing Hengtong Hui New Energy Automobile Technology Co Ltd
Current assignee: Beijing Hengtong Hui New Energy Automobile Technology Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-03
Anticipated expiration: 2029-06-25

Abstract

The utility model relates to a vehicle body correction instrument, which comprises a traction tower, a tray, a connecting piece and a bearing piece, wherein the tray is used for parking a vehicle with a deformed vehicle body; the connecting piece comprises a connecting table and a bearing table, one end of the connecting table is fixedly connected with the traction tower, and the other end of the connecting table is connected with the sliding rail in a sliding manner; the bearing platform is positioned on the connecting platform, one end of the bearing piece is clamped with the bearing platform, and the other end of the bearing piece is inserted on the groove wall at the top of the sliding groove and is in sliding connection with the groove wall; the traction tower comprises a power part and a traction part, a limiting part is arranged on the traction tower, the traction part is a traction chain, one end of the traction chain is fixedly connected with the deformation part of the vehicle body through the limiting part, and the other end of the traction chain is fixedly connected onto the limiting part. The utility model discloses have the not fragile effect of pulley.

Description

Vehicle body correction instrument

Technical Field

The utility model discloses auto repair technical field especially relates to an automobile body correction appearance.

Background

In daily life, when a traffic accident occurs, the automobile body of an automobile can deform, and when the automobile body is repaired in a vehicle repair factory, an automobile body corrector is generally used for correcting the automobile.

In the prior art, reference is made to a car body inclination correcting working platform with patent number CN103801592A, which includes a working platform, a hydraulic lifting system, a traction tower and a base. The hydraulic lifting system is located between the working platform and the base, a rail is arranged on the outer edge of the working platform, the traction pull tower is fixed on the outer edge of the working platform through a fixing bolt and can slide along the rail, and a pulley is arranged at the tail end of the traction pull tower and matched with the rail.

The defects existing in the prior art are as follows: during the use, will pull and draw the tower to fix on work platform, pull and draw the tower when pulling the automobile body department of warping, pull and draw the tower bottom and can exert thrust to work platform, and pull and draw the tower and pass through pulley sliding connection on work platform, so this thrust can be born by the pulley, forms the axial force to the pulley promptly. When the traction tower works, the traction tower deviates from the gravity center and inclines towards the direction deviating from the working platform, and at the moment, the top end of the pulley is clamped in the rail due to the fact that the pulley is just positioned in the rail, namely, radial force is formed on the pulley, so that the pulley needs to bear two forces of the axial direction and the radial direction, and the pulley is easy to damage after long-time use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a, it has the not fragile effect of pulley.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a car body correction instrument comprises a traction tower, a tray, a connecting piece and a bearing piece, wherein the tray is used for parking a car with a deformed car body, a sliding groove is formed in the peripheral surface of the tray, and a sliding rail is vertically arranged on the groove wall of the bottom of the sliding groove; the connecting piece comprises a connecting table and a bearing table, one end of the connecting table is fixedly connected with the traction tower, and the other end of the connecting table is connected with the sliding rail in a sliding manner; the bearing platform is positioned on the connecting platform, one end of the bearing piece is clamped with the bearing platform, and the other end of the bearing piece is inserted on the groove wall at the top of the sliding groove and is in sliding connection with the groove wall; the traction tower comprises a power part and a traction part, a limiting part is arranged on the traction tower, the traction part is a traction chain, one end of the traction chain is fixedly connected with the deformation part of the vehicle body through the limiting part, and the other end of the traction chain is fixedly connected onto the limiting part. The utility model discloses have the not fragile effect of pulley.

Through adopting above-mentioned technical scheme, through the setting that holds carrier, the traction tower produces axial force and radial force to the tray at the during operation, and whole effect is on the loading board, makes the pulley need not to bear any effort to protect the pulley, made it not fragile.

The utility model discloses further set up to: the power part comprises an air cylinder and an air cylinder column, the air cylinder is inserted into the air cylinder column and can penetrate out of the air cylinder column, a cylinder disc is fixedly connected to the penetrating end of the air cylinder, two baffle plates are symmetrically arranged on the cylinder disc at intervals, a semi-circular table is arranged between the two baffle plates, the traction chain is lapped on the semi-circular table, and the limiting part is located on the air cylinder.

Through adopting above-mentioned technical scheme, the setting of semicircle platform makes the drag tower at the during operation, and the drag chain slides more smoothly, and the setting up of baffle makes the drag chain can not the slippage.

The utility model discloses further set up to: the limiting piece is in threaded connection with a jackscrew.

Through adopting above-mentioned technical scheme, through the setting of jackscrew, make the armful ring can follow cylinder column length direction and adjust from top to bottom to make the locating part can adapt to the deformation position on the automobile direction of height.

The utility model discloses further set up to: the bearing piece comprises a fixing plate and a bearing plate, the fixing plate is fixedly connected with the bearing plate, two insertion holes are formed in the bearing plate at intervals, a plurality of limiting holes are formed in the groove wall of the top of the sliding groove at intervals, two insertion holes and two adjacent limiting holes simultaneously penetrate through a bolt respectively, and a pull ring is arranged at the top end of each bolt.

Through adopting above-mentioned technical scheme, the setting of bolt makes the loading board joint fixed on the tray to the endwise slip of loading board has been restricted, when making the traction tower fix in this operating position department, can not take place to slide the skew because of the human factor.

The utility model discloses further set up to: the bearing table is provided with a clamping groove, two clamping holes are symmetrically formed in the groove walls of the two sides of the clamping groove, the fixing plate is inserted into the clamping groove, and a wedge-shaped plate is arranged in the two clamping holes in a penetrating mode.

Through adopting above-mentioned technical scheme, the setting of joint groove, joint hole and wedge makes the traction tower dismantle on the tray, and later the staff can lift it away and place one side to make the traction tower can not occupation space when need not the use.

The utility model discloses further set up to: the connecting table is symmetrically provided with two steering seats, the two steering seats are respectively vertically and rotatably connected with a rotating shaft, the two rotating shafts are respectively and fixedly connected with a steering block, the two steering blocks are respectively and rotatably connected with a pulley, and the pulley slides on the sliding rail.

Through adopting above-mentioned technical scheme, the setting of turning to the seat and turning to the piece makes the pulley when turning to, can not block on the slide rail, but turns to the piece and then the small-angle rotation to there is crooked position in the slide rail that adaptation tray chamfer set up and bring.

The utility model discloses further set up to: the bottom of the connecting table is fixedly connected with a rotating shaft, and two ends of the rotating shaft are respectively and rotatably connected with a wheel.

Through adopting above-mentioned technical scheme, through the setting of two wheels, after the traction tower is dismantled, can push away the traction tower to make the more convenient that the traction tower that dismantles removed.

The utility model discloses further set up to: the locating part includes embracing ring and guide structure, it establishes to embrace the ring cover on the cylinder post, the jackscrew with embrace ring threaded connection, guide structure includes two guide arms and a guide pulley, two the guide arm symmetry is established the rigid coupling and is embraced on the ring, and inclines down in embracing ring one end and set up. The guide wheel is rotatably connected between the two guide arms, and the traction chain penetrates between the two guide arms and is located between the guide wheel and the embracing ring.

By adopting the technical scheme, the arrangement of the hooping ring, the guide plate and the guide wheel can enable the drag chain to be kept in a horizontal state, so that the drag chain is also in a horizontal drag force, and the drag tower can better pull out a deformed part when in work.

To sum up, the utility model discloses a beneficial technological effect does:

1. through the arrangement of the bearing piece, when the traction tower works, axial force and radial force are generated on the tray and are completely acted on the bearing plate, so that the pulley does not need to bear any acting force, and the pulley is protected and is not easy to damage;

2. through the arrangement of the jackscrew, the hoop can be adjusted up and down along the length direction of the cylinder column, so that the limiting part can adapt to the deformed part in the height direction of the automobile;

3. through the arrangement of the steering seat and the steering block, the pulley cannot be clamped on the sliding rail when steering, and the steering block can rotate at a small angle so as to adapt to the bent part of the sliding rail caused by the chamfering arrangement of the tray;

4. the arrangement of the embracing ring, the guide plate and the guide wheel can enable the traction chain to be kept in a horizontal state, so that the tension of the traction chain is also horizontal tension, and the traction tower can better pull the deformation part of the vehicle body during working.

Drawings

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

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.

In the figure, 1, a power part; 11. a cylinder column; 12. a cylinder; 13. a cylinder plate; 131. a baffle plate; 132. a half circular table; 2. a drag chain; 21. hooking; 3. a tray; 31. a chute; 32. a slide rail; 33. a limiting hole; 4. a connecting table; 41. a steering seat; 411. a rotating shaft; 42. a turning block; 421. a pulley; 43. a wheel; 431. a rotating shaft; 5. a bearing table; 51. a clamping groove; 511. a clamping hole; 6. a wedge plate; 7. a carrier; 71. a fixing plate; 72. a carrier plate; 721. a jack; 8. a bolt; 81. a pull ring; 91. encircling; 92. a guide arm; 93. a guide wheel; 10. a connecting member.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

as shown in fig. 1, for the utility model discloses a vehicle body correction instrument, including traction tower, tray 3, connecting piece 10 and hold carrier 7. The automobile with deformed automobile body can be parked on the tray 3 to be fixed, and the traction tower is used as an automobile body correcting device for correcting the deformed part of the automobile body. The connecting piece 10 can connect the traction tower with the tray 3, and the bearing piece 7 is positioned on the connecting piece 10 and is used for bearing various forces generated by the traction tower to the connecting piece 10 during correction.

The tray 3 is a rectangular table body, four right angles are circular arc transition, and a rectangular cavity is formed in the center of the tray 3 to reduce the weight of the tray 3. A circle of rectangular grooves are formed on the circumferential surface of the tray 3, and the rectangular grooves can be used as sliding grooves 31. The outer edge of the bottom slot wall of the chute 31 is vertically and upwardly provided with a convex edge which is a long and thin rectangular edge and can be used as a slide rail 32. The bottom of the tray 3 can be used as a lifting structure by arranging a hydraulic device.

The traction tower comprises a power part 1 and a traction part, wherein the power part 1 comprises an air cylinder 12 and an air cylinder column 11 which are controlled by air pressure, the air cylinder column 11 is a hollow cylinder with an opening at one end, the air cylinder 12 can be inserted into the air cylinder column 11 at the opening, an air pressure port is arranged on the side wall of the air cylinder column 11 close to the bottom end, the air pressure port is a circular through hole, an air pressure pipe is arranged in the air pressure port in a penetrating manner, one end of the air pressure pipe is communicated with the air cylinder 12, and the other end of the air pressure pipe can be connected with an air compressor.

When the cylinder 12 is not in operation, the top end of the cylinder is exactly flush with the opening of the cylinder column 11, the top end of the cylinder 12 is fixedly connected with a cylinder disc 13, the cylinder disc 13 is a square table, a pair of baffle plates 131 are symmetrically and parallelly arranged on the upper surface of the cylinder disc 13 based on the central line of the cylinder disc 13, the two baffle plates 131 are both rectangular plates, and the length of the two baffle plates is equal to the side length of the cylinder disc 13. A semicircular table 132 is fixedly connected to the cylinder disc 13 and located between the two baffles 131, the diameter of the semicircular table 132 is equal to the length of the baffles 131, the semicircular table 132 can be vertically arranged on the cylinder disc 13 between the two baffles 131, the arc-shaped circumferential surface of the semicircular table is arranged upwards, and the semicircular table is tightly attached to the two baffles 131.

As shown in fig. 1 and 3, a limiting member is disposed at the center of the outer wall of the cylinder 11, the limiting member is composed of an embracing ring 91 and a guiding structure, the embracing ring 91 is a circular ring with a thicker wall and can be sleeved on the cylinder 11, the guiding structure includes two guiding arms 92 and a guide pulley 93, the two guiding arms 92 are rectangular plates, the two guiding arms 92 are fixedly connected to the embracing ring 91 at intervals, one ends of the two guiding arms 92 far away from the embracing ring 91 are both provided with chamfers, a guide pulley 93 is hinged between the two guiding arms 92 at the ends, and the guide pulley 93 is a roller.

In order to make the locating part can adapt to the deformation position on the automobile body direction of height, here can set up the locating part into adjustable structure, specifically do: the radial thread of the surrounding wall of the surrounding ring 91 far away from the guide structure is connected with a jackscrew, and the jackscrew can penetrate through the wall of the surrounding ring 91 to tightly prop the surrounding ring 91 against the cylinder post 11. Through the arrangement of the jackscrew, the hoop 91 can be adjusted up and down along the length direction of the cylinder post 11, so that the limiting part can adapt to the deformation part in the height direction of the automobile.

As shown in fig. 1 and 3, the traction element is a traction chain 2, one end of the traction chain 2 is fixed on the embracing ring 91 on the side away from the guide wheel 93, and the other end of the traction chain is vertically passed through between the two guide arms 92 and hung below the guide structure after being lapped on the semi-circular truncated cone 132 upwards along the length direction of the cylinder column 11. When the device works, a hook 21 is arranged at the hanging end of the drag chain 2, and is propped against the lower part of the guide wheel 93 to hook the deformed part of the automobile.

As shown in fig. 2, the connecting element 10 comprises a connecting table 4 and a carrying table 5 for connecting the traction tower with the pallet 3. The connecting table 4 is a rectangular table body, and the end part of the connecting table is fixedly connected to the bottom end of the cylinder column 11 and is located right below the guide wheel 93. The carrier 5 is also a rectangular body and has a width equal to the width of the connecting stage 4. The bearing table 5 is fixedly connected to the upper surface of the connecting table 4, and one end of the bearing table, which is far away from the cylinder column 11, is arranged in a step shape with the connecting table 4.

The upper surface of the connecting table 4 is close to the two sides of the connecting table 4, a pair of turning seats 41 are symmetrically arranged, the two turning seats 41 are rectangular plates provided with openings, the openings are square through openings, and the turning seats 41 are located at one ends, close to the tray 3, of the turning seats. A rotating shaft 411 is vertically and rotatably connected in the two openings, a steering block 42 is fixedly connected to the two rotating shafts 411 respectively, and the steering block 42 is a rectangular block. The two turning blocks 42 are both passed through the opening and can be rotated in the opening through the rotating shaft 411 at a small angle. The two turning blocks 42 are respectively rotatably connected with a pulley 421 on the surface close to the tray 3 and also close to the outermost ends of the two turning blocks 42, the circumferential surfaces of the two pulleys 421 are both concave, and the two pulleys 421 can just slide on the slide rail 32. Since the tray 3 is provided with a chamfer when sliding on the tray 3, the turning block 42 can be rotated at a small angle so as to adapt to the curved position of the sliding rail 32 caused by the chamfer arrangement of the tray 3, so that the sliding rail 32 does not block the pulley 421 when turning.

The end face of the bearing table 5 far away from one end of the cylinder column 11 is provided with a clamping groove 51 along the length direction of the bearing table 5, the clamping groove 51 is a rectangular groove body, clamping holes 511 are symmetrically formed at two sides of the hinge groove near the top end of the clamping groove 51, and the clamping holes 511 are elongated rectangular through holes. A fixing plate 71 is inserted into the engaging groove 51, and the fixing plate 71 is a rectangular plate, and the upper surface of the fixing plate is just flush with the two engaging holes 511. One end of the fixing plate 71 penetrates through the clamping groove 51, and the other end is located in the clamping groove 51 and has a distance from the innermost end of the clamping groove 51. A wedge-shaped plate 6 can be inserted through the two clamping holes 511, and the fixing plate 71 can be clamped in the clamping groove 51 by the wedge-shaped plate 6. A bearing plate 72 is horizontally and vertically fixed on the penetrating end of the fixing plate 71, the bearing plate 72 is a rectangular plate with an opening, and is distributed in a T shape with the fixing plate 71, and the fixing plate 71 and the bearing plate 72 form a bearing member 7. The opening of the bearing plate 72 is a rectangular through opening and is located on the surface of the bearing plate 72 close to the tray 3, and the bearing plate 72 is just completely attached to the groove wall at the top of the chute 31 through the opening.

When the vehicle body is corrected, the tray 3 will be lifted, so that the traction tower is in a suspended state. The traction tower is located at the position where the edge of the tray 3 needs to work, and when the traction tower pulls the deformed part of the body, the bottom end of the traction tower generates an opposite thrust to the tray 3, the thrust acts on the connecting piece 10 at the connecting part of the traction tower and the tray 3, and the thrust forms a radial force and an axial force to the pulley 421 directly connected with the tray 3 through the connecting piece 10. Here, because the arrangement of bearing plate 72, bearing plate 72 and the cell wall at spout 31 top on the tray 3 are laminated completely, so axial force and radial force all are all acted on bearing plate 72, make pulley 421 not receive any effort to form the protection to pulley 421, make pulley 421 not fragile when using for a long time.

The bearing plate 72 also has the fixing function of the traction tower and the tray 3, when the traction tower stops at a working position, because the bearing plate 72 is completely attached to the groove wall at the top end of the chute 31, and the structure of the bearing plate 72 is rectangular, when the traction tower works, the bearing plate 72 is tightly attached to the tray 3 due to the radial force and the axial force of the bearing, and is relatively fixed on the tray 3, so that the traction tower is not easy to slide left and right.

Although the bearing plate 72 can fix the traction tower and the tray 3, in order to avoid some human factors causing the traction tower to slide and shift during operation, it can be further configured as follows: on the cell wall at spout 31 top, set up a plurality of spacing holes 33 along tray 3 border interval, this spacing hole 33 is circular through-hole. The upper surface of the bearing plate 72 vertically passes through the opening, two insertion holes 721 are arranged at intervals along the length direction of the bearing plate 72, and the two insertion holes 721 are all circular through holes and can just coincide with two adjacent limiting holes 33 one by one. When the insertion hole 721 is engaged with the limiting hole 33, a plug 8 can be inserted, and a pull ring 81 is disposed at the top end of the plug 8 to facilitate pulling of the plug 8. Through the arrangement of the limiting hole 33 and the inserting hole 721, when the traction tower slides to the working position, the bearing plate 72 can be fixed by inserting the bolt 8 into the limiting hole 33 and the inserting hole 721, so that the axial sliding of the bearing plate 72 is limited, and the traction tower cannot slide and deviate due to human factors when being fixed at the working position.

Bearing plate 72 still plays a direct role here to the dismantlement of traction tower and tray 3, specifically is: when the traction tower is not needed to be used, the plug pin 8 is pulled out, the wedge-shaped plate 6 is pulled out from the two clamping holes 511, and the fixed plate 71 and the innermost end of the clamping groove 51 are at a certain distance, so that the fixed plate 71 can be pushed into the clamping groove 51, the fixed plate 71 can drive the bearing plate 72 to be pulled out from the groove wall at the top end of the sliding groove 31, the traction tower is lifted upwards, the pulley 421 can be moved away from the sliding rail 32, the traction tower can be detached from the tray 3 at the moment, and a worker can lift the traction tower away to place the traction tower on one side, so that the traction tower does not occupy space.

In order to facilitate the movement of the disassembled traction tower, the following can be further provided: a rotating shaft 431 is welded on the central line of the width direction of the bottom end of the connecting platform 4, the length of the rotating shaft 431 is slightly larger than the width of the connecting platform 4, and two ends of the rotating shaft 431 are respectively and rotatably connected with a wheel 43 through bearings. Through the arrangement of the two wheels 43, after the traction tower is disassembled, the traction tower can be pushed to move away, so that the disassembled traction tower can move more conveniently.

The implementation principle of the embodiment is as follows: when the device is used, an automobile is parked and fixed on the tray 3, then the tray 3 is lifted, the traction tower is in a suspended state, then the traction tower slides to a working position where the deformation correction of the automobile body is needed, one end of the traction chain 2, which is provided with the hook 21, penetrates through the two guide arms 92 and then is fixedly connected with the deformation part of the automobile body, at the moment, whether the traction chain 2 from the limiting part to the deformation part of the automobile body is horizontal or not is observed, and if the traction chain is not horizontal, the traction chain 2 of the part can be in a horizontal state by adjusting the clasping ring 91. At the moment, the pneumatic press is electrified, the pneumatic press can drive the air cylinder 12 to work through the air pressure pipe, when the air cylinder 12 ascends, the cylinder disc 13 at the top drives the drag chain 2 upwards, and the other end of the drag chain 2 is fixedly connected with the clasping ring 91, so that the vertical drag chain 2 between the two guide arms 92 moves upwards at the moment, and the hook 21 is driven to pull out the concave and deformed part of the automobile. The worker will then perform other operations on the site.

When the traction tower is not needed to be used, the traction tower can be detached through the detaching process of the traction tower and moved to other idle positions so as not to occupy space.

By adopting the embodiment, through the arrangement of the bearing part 7, when the traction tower works, the axial force and the radial force are generated on the tray 3 and are all acted on the bearing plate 72, so that the pulley 421 does not need to bear any acting force, thereby protecting the pulley 421 and ensuring that the pulley is not easy to damage.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a car body correction appearance which characterized in that: the automobile parking device comprises a traction tower, a tray (3), a connecting piece (10) and a bearing piece (7), wherein the tray (3) is used for parking an automobile with a deformed automobile body, a sliding groove (31) is formed in the peripheral surface of the tray (3), and a sliding rail (32) is vertically arranged on the groove wall of the bottom of the sliding groove (31); the connecting piece (10) comprises a connecting table (4) and a bearing table (5), one end of the connecting table (4) is fixedly connected with the traction tower, and the other end of the connecting table (4) is connected with a sliding rail (32) in a sliding manner; the bearing table (5) is positioned on the connecting table (4), one end of the bearing piece (7) is clamped with the bearing table (5), and the other end of the bearing piece is inserted on the groove wall at the top of the sliding groove (31) and is in sliding connection with the groove wall; the traction tower comprises a power part (1) and a traction part, a limiting part is arranged on the traction tower, the traction part is a traction chain (2), one end of the traction chain (2) is fixedly connected with the deformation part of the vehicle body through the limiting part, and the other end of the traction chain is fixedly connected to the limiting part.

2. The vehicle body correction instrument according to claim 1, characterized in that: the power part (1) comprises an air cylinder (12) and an air cylinder column (11), the air cylinder (12) is inserted into the air cylinder column (11), the air cylinder (12) can penetrate out of the air cylinder column (11), a penetrating end of the air cylinder (12) is fixedly connected with a cylinder disc (13), two baffle plates (131) are symmetrically arranged on the cylinder disc (13) at intervals, a semi-circular table (132) is arranged between the two baffle plates (131), the traction chain (2) is lapped on the semi-circular table (132), and the limiting part is located on the air cylinder (12).

3. The vehicle body correction instrument according to claim 2, characterized in that: the limiting piece is in threaded connection with a jackscrew.

4. The vehicle body correction instrument according to claim 1, characterized in that: the bearing piece (7) comprises a fixing plate (71) and a bearing plate (72), the fixing plate (71) is fixedly connected with the bearing plate (72), two insertion holes (721) are formed in the bearing plate (72) at intervals, a plurality of limiting holes (33) are formed in the groove wall of the top of the sliding groove (31) at intervals, two insertion holes (721) and two adjacent limiting holes (33) simultaneously penetrate through a bolt (8), and two pull rings (81) are arranged at the top ends of the bolts (8) respectively.

5. The vehicle body correction instrument according to claim 4, characterized in that: be equipped with a joint groove (51) on plummer (5), the symmetry is equipped with two joint holes (511) on joint groove (51) both sides cell wall, fixed plate (71) are inserted and are established in joint groove (51), wear to establish a wedge (6) in two joint holes (511).

6. The vehicle body correction instrument according to claim 1, characterized in that: connect on platform (4) the symmetry be equipped with two and turn to seat (41), two turn to and vertically rotate respectively in seat (41) and connect a pivot (411), two a steering block (42) of rigid coupling respectively on pivot (411), two turn to and rotate respectively on block (42) and connect a pulley (421), pulley (421) in slide rail (32) are gone up to slide.

7. The vehicle body correction instrument according to claim 6, characterized in that: the bottom of the connecting table (4) is fixedly connected with a rotating shaft (431), and two ends of the rotating shaft (431) are respectively and rotatably connected with a wheel (43).

8. A vehicle body correction instrument according to claim 3, characterized in that: the locating part is including embracing ring (91) and guide structure, it establishes to embrace ring (91) cover on cylinder column (11), the jackscrew with embrace ring (91) threaded connection, guide structure includes two guiding arms (92) and a guide pulley (93), two guiding arm (92) symmetry is established the rigid coupling and is being embraced on ring (91), and inclines down in embracing ring (91) one end and set up, guide pulley (93) rotate to be connected in two between guiding arm (92), tow chain (2) pass two between guiding arm (92), and be located tow chain (2) and be located guide pulley (93) and embrace between ring (91).