A stretch-adjustable automobile frame lifting and connecting maintenance device

Abstract

The application relates to the technical field of hoisting and connecting maintenance devices, and proposes a vehicle frame hoisting and connecting maintenance device capable of stretching regulation, which can stretch and regulate according to different vehicle models, has good universality, is relatively simple to adjust and operate, can adjust a maintenance operation angle, is relatively safe and humanized in design, and has good practicality, and comprises an upper sealing mechanism and a base. The base is connected with two tracks and two side frames. The two tracks are symmetrically arranged front and back, and the two side frames are symmetrically arranged left and right. Left and right moving frames are slidably connected to the two tracks. Left and right driving assemblies are installed on the two side frames. The two left and right driving assemblies are respectively used for driving adjustment of the left moving frame and driving adjustment of the right moving frame. Left and right mounting discs are respectively rotatably connected to the left moving frame and the right moving frame. Servo motors are installed on the left moving frame and the right moving frame. The two servo motors are respectively used for driving adjustment of the left mounting disc and driving adjustment of the right mounting disc.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting and connecting maintenance devices, in particular to a car frame hoisting and connecting maintenance device capable of stretching and regulation. BACKGROUND

[0002] It is well known that the car frame is the main structure of the car, which is mostly fixedly connected by multiple cross beams and multiple longitudinal beams, and is matched with certain reinforcing and mounting structures, etc. When the worn car frame needs to be maintained, the car frame hoisting and connecting maintenance device is mostly needed. In order to facilitate the hoisting and connecting maintenance of car frames of different models, a car frame hoisting and connecting maintenance device capable of stretching and regulation is proposed.

[0003] According to the search, on April 12, 2022, a Chinese invention patent with the publication number CN112978609B disclosed a car frame hoisting and connecting maintenance device capable of stretching and regulation. It is roughly described as including a maintenance disc and an upper sealing mechanism. The left and right sides of the upper end of the maintenance disc are provided with a plug column and a straight frame, and the end of the straight frame is provided with a frame wheel. The bottom end of the maintenance disc is provided with a chuck, and the side end of the chuck is provided with a stand column and a front column. The upper sealing mechanism is installed at the top end of the maintenance disc. The bottom of the left and right ends of the maintenance disc is provided with a lower supporting mechanism. The front end wall of the straight frame is provided with a frame channel, and the outer side of the middle part of the straight frame is provided with an auxiliary supporting mechanism. The lower supporting mechanism includes a disc, a disc cavity, a plug sealing piece, a piece storage groove, a center groove, an embedded piece, an auxiliary groove, a spring column and a magnetic plate. The upper end of the disc is provided with a disc cavity, a center groove and an auxiliary groove. The side end wall of the disc is provided with a plug sealing piece and a spring column. The upper end of the plug sealing piece is provided with a piece storage groove. The rear end of the disc is fixedly provided with an embedded piece, and the side of the disc close to the embedded piece is provided with a magnetic plate. When in use, the plug column is inserted into the disc hole and then inserted into the maintenance disc, so as to lock the position of the sealing disc and prevent the sealing disc from shaking left and right. The sealing disc is more stable when being carried. At the same time, the disc penetrating strip at the end of the rotating sealing disc is inserted into the inner side end of the sealing disc. At this time, the carrying area can be formed, the car frame can be conveniently placed on the upper end of the sealing disc, and the disc penetrating strip can be rotated and extracted, so that the carrying area on the upper end of the sealing disc is larger. At this time, the car frame can be maintained and processed from the bottom of the sealing disc. By rotating the transmission screw, the threaded transmission block is adjusted to adjust the height position of the block. The block is linked to move the pressing piece to move the pressing piece up and down. When the pressing piece moves down, the side end wall of the car frame can be clamped to simply place the car frame and facilitate the maintenance.

[0004] Although the prior art scheme can be used for auxiliary hoisting maintenance of the automobile frame, the maintenance personnel needs to maintain the automobile frame at the bottom of the sealing disc during use, the maintenance personnel needs to work with the head up during the maintenance operation, the maintenance operation is easy to be tired, and the high-temperature particles falling during the similar operation such as welding are easy to cause harm to the maintenance personnel, and the safety is poor. SUMMARY

[0005] (One) technical problem to be solved

[0006] In view of the defects of the prior art, the present application provides a stretch-adjustable automobile frame hoisting maintenance device, which can be stretched and adjusted according to different vehicle models, has good versatility, is easy to adjust, the maintenance operation angle can be adjusted, the design is safe and humanized, and has good practicability.

[0007] (Two) technical scheme

[0008] To achieve the above object, the present application provides the following technical scheme: a stretch-adjustable automobile frame hoisting maintenance device, comprising an upper sealing mechanism, further comprising a base, the top end of the base is fixedly connected with two rails and two side frames, the two rails are symmetrically arranged front and back, and the two side frames are symmetrically arranged left and right, a left moving frame and a right moving frame are slidably connected on the two rails, left and right drive assemblies are installed on the two side frames, the two left and right drive assemblies are respectively used for driving adjustment of the left moving frame and driving adjustment of the right moving frame, a left mounting disc and a right mounting disc are respectively rotatably connected on the left moving frame and the right moving frame, servo motors are installed on the left moving frame and the right moving frame, the two servo motors are respectively used for driving adjustment of the left mounting disc and driving adjustment of the right mounting disc, a left dovetail rail group is fixedly connected on the left mounting disc, and a right dovetail rail group is fixedly connected on the right mounting disc, the upper sealing mechanism comprises a left lifting disc, a right lifting disc, a left sliding frame and a right sliding frame, the left lifting disc and the right lifting disc are slidably connected with each other, a plurality of slide grooves are formed in the left end of the left lifting disc and the right end of the right lifting disc, the left dovetail rail group and the right dovetail rail group are slidably fitted in the plurality of slide grooves, top grooves are arranged on the left lifting disc and the right lifting disc, the left sliding frame and the right sliding frame are slidably fitted with each other, the left sliding frame and the right sliding frame are slidably installed in the two top grooves, lifting adjustment assemblies are installed on the left mounting disc and the right mounting disc, and the two lifting adjustment assemblies are respectively used for height adjustment of the left lifting disc and height adjustment of the right lifting disc.

[0009] On the basis of the foregoing scheme, a plurality of left horizontal holes and a plurality of right horizontal holes are arranged on the left sliding frame and the right sliding frame respectively, an auxiliary supporting rod is arranged between the left horizontal holes and the right horizontal holes which are coaxial with each other, and the right end of the right sliding frame is provided with an auxiliary operation strip slot, and the plurality of right horizontal holes are in communication with the auxiliary operation strip slot.

[0010] On the basis of the foregoing scheme, preferably, the left and right driving assemblies each include a lead screw and a lead screw sleeve, the two lead screws are threadedly connected in the two lead screw sleeves respectively, the two lead screw sleeves are rotatably connected with the left moving frame and fixedly connected with the right moving frame respectively, the two side frames are each provided with an upper hole and a lower hole, the two lead screws are rotatably connected in the two lower holes respectively, the two side frames are each provided with a control motor, the drive shafts of the two control motors pass through the two upper holes respectively, and the drive shafts of the two control motors are in transmission connection with the two lead screws respectively.

[0011] On the basis of the foregoing scheme, further, the two lifting adjusting assemblies each include a threaded rod and an adjusting motor, the two threaded rods are threadedly connected with the left lifting disc and the right lifting disc respectively, the two threaded rods are each rotatably connected with an upper bearing seat and a lower bearing seat, the two upper bearing seats are fixedly connected on the left mounting disc and the right mounting disc respectively, the two lower bearing seats are also fixedly connected on the left mounting disc and the right mounting disc respectively, the two adjusting motors are mounted on the left mounting disc and the right mounting disc respectively, the output shafts of the two adjusting motors are each provided with a drive pulley, the top ends of the two threaded rods are each provided with a driven pulley, and the two drive pulleys are in transmission connection with the two driven pulleys respectively.

[0012] On the basis of the foregoing scheme, still further, the bottom end of the left lifting disc and the bottom end of the right lifting disc are each provided with a rail slot, the two rail slots are in communication with the two top slots respectively, the two rail slots are each slidably connected with a rail block, and the top ends of the two rail blocks are fixedly connected with the bottom end of the left sliding frame and the bottom end of the right sliding frame respectively.

[0013] On the basis of the foregoing scheme, still further, the left sliding frame and the right sliding frame are each provided with a positioning port, the two positioning ports are each provided with a positioning pin, and the positioning pin passes through the positioning port and the rail slot in sequence.

[0014] Further to the foregoing scheme, the front end of the left sliding frame and the front end of the right sliding frame are each fixedly connected with an operation frame, and the front ends of the two operation frames are each rotatably sunk.

[0015] Still further to the foregoing scheme, the left mounting disc is rotatably connected with the left moving frame through a left shaft, the right mounting disc is rotatably connected with the right moving frame through a right shaft, the left shaft and the right shaft are each provided with a bevel gear plate, the output shafts of the two servo motors are each provided with a bevel gear, and the two bevel gears are in meshing connection with the two bevel gear plates respectively.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a car frame lifting and repair device with adjustable tension, which has the following beneficial effects:

[0018] 1. In this invention, the space formed by the cooperation of the track, the left moving frame, and the right moving frame can be adjusted, thus facilitating the storage of car frames of different models. The design of the upper sealing mechanism provides auxiliary support during the maintenance of the car frame. At the same time, it can also be coordinated with the movement of the left and right moving frames to achieve the adjustment of the auxiliary support size. It has good versatility. Furthermore, the left and right sliding frames can extend the left and right lifting plates respectively, which facilitates the insertion of the car frame during the maintenance process, thus having good practicality.

[0019] 2. In this invention, the design of the left and right drive components enables the driving adjustment of the relative distance between the left and right moving frames, resulting in a reasonable structure and simple adjustment operation.

[0020] 3. In this invention, the design of the left and right mounting plates allows the angle of the upper sealing mechanism to be adjusted relative to the left and right moving frames, and the maintenance operation angle can be adjusted. Through the design of the lifting adjustment component, the upper sealing mechanism can be lifted and adjusted, and the maintenance operation height can be adjusted. The design is relatively safe and user-friendly. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0022] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the local structure at point A;

[0023] Figure 3 For the present invention Figure 1 A magnified view of the structure at point B in the middle;

[0024] Figure 4 For the present invention Figure 1 A magnified schematic diagram of the local structure at point C;

[0025] Figure 5 This is a partial, exploded three-dimensional structural diagram of the assembly of the launcher rail block, positioning pins, and operating frame.

[0026] Figure 6 This is a three-dimensional structural diagram of the entire invention from another angle;

[0027] Figure 7 For the present invention Figure 6A local enlarged structure schematic view at D;

[0028] Figure 8 For the invention Figure 6 A local enlarged structure schematic view at E.

[0029] In the figure: 1, base; 2, track; 3, side frame; 4, left moving frame; 5, right moving frame; 6, left mounting disc; 7, right mounting disc; 8, left swallow rail group; 9, right swallow rail group; 10, left lifting disc; 11, right lifting disc; 12, left sliding frame; 13, right sliding frame; 14, auxiliary support rod; 15, lead screw; 16, lead screw sleeve; 17, threaded rod; 18, upper bearing seat; 19, lower bearing seat; 20, drive pulley; 21, driven pulley; 22, track block; 23, positioning pin; 24, operating frame; 25, left shaft; 26, right shaft; 27, bevel gear plate; 28, bevel gear. DETAILED DESCRIPTION

[0030] EMBODIMENT

[0031] Please refer to Figures 1-8 A vehicle frame lifting connection maintenance device capable of stretching regulation, comprising an upper sealing mechanism, further comprising a base 1, the top end of the base 1 is fixedly connected with two tracks 2 and two side frames 3, the two tracks 2 are symmetrically arranged front and back, the two side frames 3 are symmetrically arranged left and right, a left moving frame 4 and a right moving frame 5 are slidingly connected on the two tracks 2, through the cooperation of the track 2, the left moving frame 4 and the right moving frame 5, the space formed between the left moving frame 4 and the right moving frame 5 can be adjusted, so as to facilitate the storage of vehicle frames of different vehicle models, a left-right driving assembly is installed on each of the two side frames 3, the two left-right driving assemblies are respectively used for driving adjustment of the left moving frame 4 and the right moving frame 5, the two left-right driving assemblies each comprise a lead screw 15 and a lead screw sleeve 16, the two lead screws 15 are respectively threadedly connected in the two lead screw sleeves 16, the two lead screw sleeves 16 are respectively rotationally connected with the left moving frame 4 and fixedly connected with the right moving frame 5, upper holes and lower holes are formed in the two side frames 3, the two lead screws 15 are respectively rotationally connected in the two lower holes, a control motor is installed on each of the two side frames 3, the drive shafts of the two control motors respectively pass through the two upper holes, and the drive shafts of the two control motors are respectively in transmission connection with the two lead screws 15, through the design of the left-right driving assembly, driving adjustment of the relative distance between the left moving frame 4 and the right moving frame 5 can be realized, the structure is relatively reasonable, and the adjustment operation is relatively simple.

[0032] It also needs to be further explained that the left moving frame 4 and the right moving frame 5 are respectively rotatably connected with the left mounting disc 6 and the right mounting disc 7, and through the design of the left mounting disc 6 and the right mounting disc 7, the angle of the upper sealing mechanism can be adjusted relative to the left moving frame 4 and the right moving frame 5, the maintenance angle can be adjusted, the left moving frame 4 and the right moving frame 5 are both installed with servo motors, two servo motors are respectively used for driving adjustment of the left mounting disc 6 and the right mounting disc 7, the left mounting disc 6 is rotatably connected with the left moving frame 4 through a left shaft 25, the right mounting disc 7 is rotatably connected with the right moving frame 5 through a right shaft 26, the left shaft 25 and the right shaft 26 are both installed with bevel gears 27, the output shafts of the two servo motors are both installed with bevel gears 28, the two bevel gears 28 are respectively engaged with the two bevel gears 27, the left mounting disc 6 is fixedly connected with a left dovetail rail group 8, the right mounting disc 7 is fixedly connected with a right dovetail rail group 9, the upper sealing mechanism includes a left lifting disc 10, a right lifting disc 11, a left sliding frame 12 and a right sliding frame 13, the left lifting disc 10 and the right lifting disc 11 are slidably connected with each other, the left end of the left lifting disc 10 and the right end of the right lifting disc 11 are both provided with a plurality of slide grooves, the left dovetail rail group 8 and the right dovetail rail group 9 are respectively slidably matched in the plurality of slide grooves, the left lifting disc 10 and the right lifting disc 11 are both provided with top grooves, the left sliding frame 12 and the right sliding frame 13 are slidably matched with each other, the left sliding frame 12 and the right sliding frame 13 are respectively slidably installed in the two top grooves, the bottom end of the left lifting disc 10 and the bottom end of the right lifting disc 11 are both provided with rail grooves, the two rail grooves are respectively communicated with the two top grooves, the two rail grooves are both slidably connected with rail blocks 22, the top ends of the two rail blocks 22 are respectively fixedly connected with the bottom ends of the left sliding frame 12 and the right sliding frame 13, through the design of the upper sealing mechanism, auxiliary support during the maintenance process of the automobile frame is realized, and the auxiliary support size can be adjusted with the movement of the left moving frame 4 and the right moving frame 5, the universality is good, the left sliding frame 12 and the right sliding frame 13 can respectively protrude out of the left lifting disc 10 and the right lifting disc 11, so that the automobile frame is conveniently placed during the maintenance process, the practicability is good, the left sliding frame 12 and the right sliding frame 13 are both provided with positioning ports, the two positioning ports are both provided with positioning pins 23, the positioning pins 23 pass through the positioning ports and the rail grooves in sequence, and the positions of the left sliding frame 12 and the right sliding frame 13 in the two top grooves are assisted and stabilized.

[0033] It needs to be further explained that the left sliding frame 12 and the right sliding frame 13 are provided with a plurality of left horizontal holes and a plurality of right horizontal holes, respectively, and the left horizontal holes and the right horizontal holes are coaxially arranged with the auxiliary supporting rods 14, which cooperate with the left sliding frame 12 and the right sliding frame 13 to achieve the auxiliary support of the automobile frame. The right end of the right sliding frame 13 is provided with an auxiliary operation slot, and the plurality of right horizontal holes are in communication with the auxiliary operation slot, facilitating the insertion and extraction operation of the auxiliary supporting rods 14. The front end of the left sliding frame 12 and the front end of the right sliding frame 13 are both fixedly connected with operation frames 24, and the front ends of the two operation frames 24 are both rotationally sunk, achieving the auxiliary pushing and pulling of the left sliding frame 12 and the right sliding frame 13. The left mounting disc 6 and the right mounting disc 7 are both provided with lifting adjusting assemblies, and the two lifting adjusting assemblies are respectively used for height adjustment of the left lifting disc 10 and the right lifting disc 11. The two lifting adjusting assemblies both include threaded rods 17 and adjusting motors, and the two threaded rods 17 are respectively threadedly connected with the left lifting disc 10 and the right lifting disc 11. The two threaded rods 17 are both rotationally connected with upper bearing seats 18 and lower bearing seats 19, and the two upper bearing seats 18 are respectively fixedly connected with the left mounting disc 6 and the right mounting disc 7. The two lower bearing seats 19 are also respectively fixedly connected with the left mounting disc 6 and the right mounting disc 7. The two adjusting motors are respectively mounted on the left mounting disc 6 and the right mounting disc 7, and the output shafts of the two adjusting motors are both provided with driving pulleys 20. The top ends of the two threaded rods 17 are both provided with driven pulleys 21, and the two driving pulleys 20 are respectively in transmission connection with the two driven pulleys 21. Through the design of the lifting adjusting assembly, the upper sealing mechanism can be lifted and adjusted, and the maintenance height can be adjusted, which is safe and user-friendly.

[0034] The servo motor, the control motor and the adjusting motor in this embodiment are all conventional devices known to those skilled in the art, which can be purchased on the market or customized according to actual needs. In this patent, we only use them and do not improve their structure and function. The setting method, installation method and electrical connection method can be operated by those skilled in the art according to the requirements of the instruction manual, and will not be described here.

[0035] In summary, the working process of the stretch-adjustable automobile frame lifting repair device is as follows: in use, first, the stretch-adjustable automobile frame lifting repair device is installed at the desired location, and the servo motor, control motor and adjusting motor are connected to the forward and reverse circuit according to the respective instruction manuals; when the automobile frame needs to be lifted and repaired, first, the specific size of the automobile frame is determined, and one or two control motors are controlled to work, so that the control motor drives the corresponding lead screw 15 to rotate; when the lead screw 15 rotates, the size adjustment of the two mutually threaded sleeves 16 and lead screws 15 is realized through the cooperation of the lead screw 15 and the sleeve 16, thereby realizing the size adjustment between the left moving frame 4 and the right moving frame 5, so that the working area between the left moving frame 4 and the right moving frame 5 can match the automobile frame to be repaired; the support size formed by the cooperation of the left lifting disc 10 and the right lifting disc 11 can be adjusted synchronously during the adjustment of the left moving frame 4 and the right moving frame 5; after the adjustment is completed, the overall height of the left sliding frame 12 and the right sliding frame 13 is lowered by controlling the adjusting motor; then the positioning pin 23 is pulled out through the operation frame 24, and the left sliding frame 12 and the right sliding frame 13 are pulled forward synchronously, so that the left sliding frame 12 protrudes from the left lifting disc 10, and the right sliding frame 13 also protrudes from the right lifting disc 11, reducing the obstruction of the left mounting disc 6 and the right mounting disc 8 to the left end of the left sliding frame 12 and the right end of the right sliding frame 13; the automobile frame to be repaired is placed on the support surface formed by the cooperation of the left sliding frame 12 and the right sliding frame 13, and the auxiliary positioning of the automobile frame on the left sliding frame 12 and the right sliding frame 13 is realized through appropriate clamps; after positioning, the left sliding frame 12 and the right sliding frame 13 are reset, the positioning pin 23 is inserted, and the height of the automobile frame is adjusted according to the convenience of operation during the repair of the automobile frame, so that the height and angle of the automobile frame are more suitable for the repair work of the repair personnel, thereby facilitating the repair of the automobile frame.

Claims

1. A stretch-regulated automobile frame lifting and repairing device, comprising an upper sealing mechanism, characterized in that, Also include the base (1), the top end of the base (1) is fixedly connected with two tracks (2) and two side frame (3), two track (2) is symmetrically arranged, two side frame (3) is symmetrically arranged, two track (2) is slidably connected with left moving frame (4) and right moving frame (5), two side frame (3) is installed with left and right drive assembly, two left and right drive assembly is used for left moving frame (4) drive adjustment and right moving frame (5) drive adjustment respectively, left moving frame (4) and right moving frame (5) are rotatably connected with left mounting disc (6) and right mounting disc (7) respectively, left moving frame (4) and right moving frame (5) are installed with servo motor, two servo motor is used for left mounting disc (6) drive adjustment and right mounting disc (7) drive adjustment respectively, the left mounting disc (6) is fixedly connected with left dovetail rail group (8), the right mounting disc (7) is fixedly connected with right dovetail rail group (9), the upper sealing mechanism includes left lifting disc (10), right lifting disc (11), left sliding frame (12) and right sliding frame (13), the left lifting disc (10) and right lifting disc (11) are slidably connected with each other, the left end of left lifting disc (10) and the right end of right lifting disc (11) are provided with a plurality of slide grooves, the left dovetail rail group (8) and right dovetail rail group (9) are slidably fitted in a plurality of slide grooves, the left lifting disc (10) and the right lifting disc (11) are provided with top groove, the left sliding frame (12) and the right sliding frame (13) are slidably connected with each other, the left sliding frame (12) and the right sliding frame (13) are slidably installed in two top grooves, the left mounting disc (6) and the right mounting disc (7) are installed with lifting adjusting assembly, two lifting adjusting assembly is used for left lifting disc (10) height adjustment and right lifting disc (11) height adjustment respectively.

2. The stretchable and adjustable vehicle frame lifting device according to claim 1, wherein, The left sliding frame (12) and the right sliding frame (13) are provided with a plurality of left horizontal holes and a plurality of right horizontal holes, the left horizontal hole and the right horizontal hole are coaxially arranged, and the auxiliary supporting rod (14) is arranged between the left horizontal hole and the right horizontal hole, the right end of the right sliding frame (13) is provided with an auxiliary operation strip slot, and the plurality of right horizontal holes are in communication with the auxiliary operation strip slot.

3. The stretch-regulated vehicle frame lifting and repairing device according to claim 2, characterized in that, Two left and right drive assemblies include lead screw (15) and lead screw sleeve (16), two lead screw (15) are threadedly connected in two lead screw sleeves (16) respectively, two lead screw sleeves (16) are rotatably connected with left moving frame (4) and fixedly connected with right moving frame (5), two side frame (3) are provided with upper hole and lower hole, two lead screw (15) are rotatably connected in two lower holes, two control motors are installed on two side frame (3), the drive shafts of two control motors pass through two upper holes respectively, and the drive shafts of two control motors are in transmission connection with two lead screws (15) respectively.

4. The stretch-regulated vehicle frame lifting and repairing device according to claim 3, characterized in that, Two lifting adjusting assemblies comprise threaded rods (17) and adjusting motors, the two threaded rods (17) are respectively in threaded connection with the left lifting disc (10) and the right lifting disc (11), upper bearing seats (18) and lower bearing seats (19) are rotatably connected on the two threaded rods (17), the two upper bearing seats (18) are respectively fixedly connected on the left mounting disc (6) and the right mounting disc (7), the two lower bearing seats (19) are also respectively fixedly connected on the left mounting disc (6) and the right mounting disc (7), the two adjusting motors are respectively mounted on the left mounting disc (6) and the right mounting disc (7), and drive pulleys (20) are mounted on the output shafts of the two adjusting motors, driven pulleys (21) are mounted on the top ends of the two threaded rods (17), and the two drive pulleys (20) are in transmission connection with the two driven pulleys (21).

5. The stretch-regulated vehicle frame lifting and repairing device according to claim 4, characterized in that, The bottom end of the left lifting disc (10) and the bottom end of the right lifting disc (11) are provided with rail grooves, the two rail grooves are respectively in communication with the two top grooves, rail blocks (22) are slidably connected in the two rail grooves, and the top ends of the two rail blocks (22) are respectively fixedly connected with the bottom end of the left sliding frame (12) and the bottom end of the right sliding frame (13).

6. The stretch-regulated vehicle frame lifting and repairing device according to claim 5, characterized in that, The left sliding frame (12) and the right sliding frame (13) are provided with positioning ports, and positioning pins (23) are arranged in the two positioning ports.

7. The stretch-regulated vehicle frame lifting and repairing device according to claim 6, characterized in that, The front end of the left sliding frame (12) and the front end of the right sliding frame (13) are fixedly connected with operation frames (24), and the front ends of the two operation frames (24) are rotatably sunk.

8. The stretch-regulated vehicle frame lifting and repairing device according to claim 7, characterized in that, The left mounting disc (6) is rotatably connected with the left moving frame (4) through a left shaft (25), the right mounting disc (7) is rotatably connected with the right moving frame (5) through a right shaft (26), a bevel gear (27) is mounted on the left shaft (25) and the right shaft (26), a bevel gear (28) is mounted on the output shaft of each servo motor, and the two bevel gears (28) are respectively in meshing connection with the two bevel gears (27).

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