Auxiliary device for replacing flange plate of vehicle

Abstract

The utility model relates to the technical field of railway flange plate maintenance, in particular to a vehicle flange plate replacement auxiliary device which is used for solving the problem that flange plate accessories are difficult to replace in the prior art. The double-thread rod is provided with two sections of threads which are equal in tooth set and opposite in rotation direction, and the two sections of threads are both in threaded connection with threaded cylinders. The threaded cylinder is installed on the pipe system and located between the two flange plates. When the double-threaded rod rotates, the two threaded cylinders can be far away from each other and push the two flange plates, so that the gap between the two flange plates is adjusted; the threaded cylinders are installed on the pipe system and located between the two flange plates, the two threaded cylinders can be driven to be close to or away from each other when the double-threaded rod rotates, rotation of the double-threaded rod is stopped after the distance between the two threaded cylinders is adjusted, and therefore the gap between the two flange plates can be kept at the moment; and at the moment, flange plate accessories can be replaced, and convenience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway flange maintenance, in particular to a vehicle flange replacement auxiliary device. Background Art

[0002] The vehicle brake device is the basic unit of the train brake device. The vehicle brake technology and brake performance determine the performance of the train brake. For a moving railway train, if we want to slow down or stop it, we need to apply a certain amount of external force in the expected direction of movement to the train as needed to slow it down or stop it, that is, to apply the braking effect: the train must release the braking effect before accelerating or starting to accelerate during operation, that is, to apply the relief effect.

[0003] The important functions of the braking device are: on the one hand, it can slow down the train, prevent acceleration or stop under any circumstances, and ensure driving safety; on the other hand, it is also an important prerequisite for increasing the running speed of the train and increasing the traction weight, that is, improving the railway transportation capacity.

[0004] The flange of railway freight cars plays a vital role in the brake pipe system and is directly related to the safety of vehicle operation. When the flange is damaged due to factors such as ambient temperature, operating loss, and mechanical deformation, it is necessary to adjust and replace the flange accessories. However, there is no auxiliary tool dedicated to replacing the flange accessories in the prior art, making replacement difficult. Utility Model Content

[0005] The utility model provides a vehicle flange replacement auxiliary device to solve the problem of difficulty in replacing flange accessories in the prior art.

[0006] In order to alleviate the above technical problems, the technical solution provided by the utility model is:

[0007] A vehicle flange replacement auxiliary device includes a gap adjustment mechanism, wherein the gap adjustment mechanism includes a double threaded rod;

[0008] The double-threaded rod is provided with two sections of threads with equal tooth tools and opposite rotation directions, and the two sections of threads are threadedly connected with a threaded barrel;

[0009] The threaded barrel is installed in the pipe system and is located between two flanges;

[0010] When the double-threaded rod rotates, the two threaded barrels can move away from each other and push the two flanges, thereby adjusting the gap between the two flanges.

[0011] Furthermore, the gap adjustment mechanism further includes a clamping base, and the clamping base is connected to the threaded barrel;

[0012] A clamping top seat is hingedly connected to the clamping base;

[0013] The clamping top seat can clamp the pipe system when it rotates and approaches the clamping base.

[0014] Furthermore, a seesaw is connected to the clamping top seat near the hinged portion with the clamping base, and an arc-shaped hydraulic rod is connected between the seesaw and the clamping base;

[0015] The center of the arc track formed by the arc hydraulic rod falls on the axis of the hinge shaft of the clamping top seat and the clamping base;

[0016] When the arc-shaped hydraulic rod is extended, it can push the clamping top seat to approach the clamping base.

[0017] Furthermore, a first hydraulic oil box is connected to the end surface of the clamping base, a first push block is slidably connected inside the first hydraulic oil box, and a side wall of the first push block is in contact with an inner wall of the first hydraulic oil box;

[0018] A first oil pipe is connected between the first hydraulic oil box and the arc-shaped hydraulic rod;

[0019] When the threaded cylinder is close to the flange, the flange can push the first push block to slide into the first hydraulic oil box, so that the arc-shaped hydraulic rod is extended.

[0020] Furthermore, a first spring is arranged in the first hydraulic oil box, and two ends of the first spring are respectively connected to the first push block and the first hydraulic oil box.

[0021] Furthermore, it also includes a supporting mechanism, the supporting mechanism includes a first supporting frame, and the first supporting frame is provided with a placement slot;

[0022] The end of the double-threaded rod is coaxially connected with a positioning rod, and the positioning rod is connected to the placement groove.

[0023] Furthermore, a directional rod is connected to the first support frame, and grooves cooperating with the directional rod are formed on the side walls of the two threaded cylinders.

[0024] Furthermore, the support mechanism further comprises a second support frame, and the first support frame slides axially on the second support frame along the double-threaded rod;

[0025] When only one of the two threaded barrels abuts against the corresponding flange, the first support frame slides on the second support frame toward the other threaded barrel;

[0026] When the two threaded tubes abut against the corresponding flanges at the same time, the first support frame does not slide relative to the second support frame.

[0027] Furthermore, the support mechanism also includes a piston cylinder connected to the four corners of the lower surface of the second support frame, a piston rod is slidably connected in the piston cylinder, a circular plate is connected to the bottom end of the piston rod, and a second spring is connected between the circular plate and the lower surface of the second support frame;

[0028] The four piston rods can slide with different lengths relative to the corresponding piston cylinders, so that the table surface of the second support frame remains horizontal.

[0029] Furthermore, the lower surface of the second support frame is connected to a second hydraulic oil box, a second push block is slidably connected inside the second hydraulic oil box, and a side wall of the second push block is in contact with an inner wall of the second hydraulic oil box;

[0030] The four piston cylinders are connected to the second hydraulic oil box through a second oil pipe, and the four second oil pipes are provided with a solenoid valve;

[0031] The four corners of the upper surface of the second support frame are connected with distance rods, and when the tops of the four distance rods are in contact with the bottom of the vehicle, the table surface of the second support frame is horizontal;

[0032] When the second push block is pressed, the hydraulic oil in the second hydraulic oil box is pumped into the four piston cylinders, so that the four circular plates move downward to contact the ground, and the tops of the four distance rods contact the bottom of the vehicle;

[0033] When the solenoid valve is closed, the four piston rods maintain relative positions with the corresponding piston cylinders.

[0034] The beneficial effects of the utility model are analyzed as follows:

[0035] A vehicle flange replacement auxiliary device comprises a gap adjustment mechanism, which comprises a double-threaded rod; the double-threaded rod is provided with two sections of threads with equal teeth and opposite rotation directions, and the two sections of threads are threadedly connected with threaded barrels; the threaded barrel is installed in a pipe system and is located between two flanges; when the double-threaded rod rotates, the two threaded barrels can move away from each other and push the two flanges, thereby adjusting the gap between the two flanges.

[0036] When in use, the threaded barrel is installed on the pipe system and is between the two flanges. Since the two threaded barrels are respectively installed on the threads of the two sections of the double-threaded rod with equal and opposite rotation directions, the two threaded barrels can be driven closer to or farther away from each other when the double-threaded rod rotates. After adjusting the distance between the two threaded barrels, the rotation of the double-threaded rod is stopped, so that the gap between the two flanges can be maintained. At this time, the flange accessories can be replaced, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0038] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0039] Figure 2 This is a schematic diagram of the structure of the double-threaded rod of the utility model;

[0040] Figure 3 It is a structural schematic diagram of the first hydraulic oil box of the utility model;

[0041] Figure 4 It is a structural schematic diagram of the distance rod of the utility model;

[0042] Figure 5 It is a structural schematic diagram of the second hydraulic oil box of the utility model.

[0043] icon:

[0044] 100, gap adjustment mechanism; 110, motor; 111, sleeve; 120, double threaded rod; 121, positioning rod; 130, threaded cylinder; 140, clamping base; 150, clamping top seat; 160, seesaw; 170, arc-shaped hydraulic rod; 180, first hydraulic oil box; 181, first push block; 182, first spring; 190, first oil pipe; 200, supporting mechanism; 210, first supporting frame; 211, directional rod; 220, placement groove; 230, second supporting frame; 240, insert cylinder; 250, distance rod; 260, piston cylinder; 270, piston rod; 271, round plate; 280, second spring; 290, second hydraulic oil box; 291, second push block; 292, second oil pipe; 293, solenoid valve. DETAILED DESCRIPTION

[0045] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Example

[0049] like Figure 1-Figure 5 As shown, a vehicle flange replacement auxiliary device includes a gap adjustment mechanism 100, which includes a double-threaded rod 120; the double-threaded rod 120 is provided with two sections of threads with equal teeth and opposite rotation directions, and the two sections of threads are threadedly connected with a threaded barrel 130; the threaded barrel 130 is installed in the pipe system and is located between the two flanges; when the double-threaded rod 120 rotates, the two threaded barrels 130 can move away from each other and push the two flanges, thereby adjusting the gap between the two flanges.

[0050] The working mechanism of the vehicle flange replacement auxiliary device provided in this embodiment is as follows:

[0051] When in use, the threaded barrel 130 is installed on the pipe system and is located between the two flanges. Since the two threaded barrels 130 are respectively installed on the two sections of the double-threaded rod 120 with equal and opposite threads, the two threaded barrels 130 can be driven to move closer to or farther from each other when the double-threaded rod 120 rotates. After adjusting the distance between the two threaded barrels 130, the rotation of the double-threaded rod 120 is stopped, so that the gap between the two flanges can be maintained. At this time, the flange accessories can be replaced, which is more convenient.

[0052] The rotation of the double-threaded rod 120 is driven by the motor 110, and the motor 110 can be powered by a battery, so that the mobile working range of the device is not restricted. The output end of the motor 110 is connected to the sleeve 111, and the ends of the sleeve 111 and the double-threaded rod 120 are respectively provided with matching internal and external hexagonal sockets, so that the double-threaded rod 120 can be disassembled and assembled from the output end of the motor 110, which is convenient for storage and replacement of threaded barrel 130 accessories.

[0053] Regarding how the threaded barrel 130 is connected to the pipe system, specifically:

[0054] The gap adjustment mechanism 100 further includes a clamping base 140 , which is connected to the threaded tube 130 ; a clamping top seat 150 is hingedly connected to the clamping base 140 ; ​​and the clamping top seat 150 can clamp the pipe system when it rotates and approaches the clamping base 140 .

[0055] The height position of the threaded barrel 130 is controlled so that the clamping base 140 on the threaded barrel 130 can contact the pipe system, and then the clamping top seat 150 is rotated to cooperate with the clamping base 140 to fit on the pipe system, and then the clamping top seat 150 is locked on the clamping base 140, thereby completing the connection between the threaded barrel 130 and the pipe system.

[0056] Regarding how the clamping top seat 150 and the clamping base 140 clamp the pipe system, specifically:

[0057] A seesaw 160 is connected to the clamping top seat 150 near the hinged portion with the clamping base 140, and an arc-shaped hydraulic rod 170 is connected between the seesaw 160 and the clamping base 140; the center of the arc-shaped trajectory formed by the arc-shaped hydraulic rod 170 falls on the axis of the hinge shaft between the clamping top seat 150 and the clamping base 140; when the arc-shaped hydraulic rod 170 is extended, it can push the clamping top seat 150 close to the clamping base 140.

[0058] The arc trajectory of the arc hydraulic rod 170 falls on the hinge axis of the clamping top seat 150 and the clamping base 140, so that the arc hydraulic rod 170 can push the clamping top seat 150 to swing relative to the clamping base 140 through the rocker 160 when extending and retracting. When the arc hydraulic rod 170 is extended, the clamping top seat 150 swings close to the clamping base 140, so that the pipe system between the two is in contact with the clamping top seat 150 and the clamping base 140. At this time, the arc hydraulic rod 170 is kept in an extended state, so that the threaded tube 130 can be installed on the pipe system.

[0059] Regarding how the arc-shaped hydraulic rod 170 is extended, specifically:

[0060] A first hydraulic oil box 180 is connected to the end face of the clamping base 140, and a first push block 181 is slidably connected inside the first hydraulic oil box 180, and the side wall of the first push block 181 is in contact with the inner wall of the first hydraulic oil box 180; a first oil pipe 190 is connected between the first hydraulic oil box 180 and the arc-shaped hydraulic rod 170; when the threaded cylinder 130 approaches the flange, the flange can push the first push block 181 to slide into the first hydraulic oil box 180, thereby extending the arc-shaped hydraulic rod 170.

[0061] When the two threaded barrels 130 move away from each other, the first push block 181 at the distal end of the threaded barrel 130 can contact the flange on the pipe system. As the double-threaded rod 120 continues to rotate, the flange can block the first push block 181. At this time, the first push block 181 slides into the first hydraulic oil box 180, so that the hydraulic oil in the first hydraulic oil box 180 enters the arc-shaped hydraulic rod 170 through the first oil pipe 190, so that the arc-shaped hydraulic rod 170 extends. At this time, the clamping top seat 150 swings toward the clamping base 140 so that the two fit on the pipe system.

[0062] Regarding how to shorten the arc-shaped hydraulic rod 170, specifically:

[0063] A first spring 182 is disposed in the first hydraulic oil box 180 , and two ends of the first spring 182 are connected to the first push block 181 and the first hydraulic oil box 180 , respectively.

[0064] When the double-threaded rod 120 is reversed so that the two threaded cylinders 130 are close to each other, the two threaded cylinders 130 are away from the flange at this time, and then the flange no longer pushes the first push block 181, so that the first spring 182 extends, and the first spring 182 pushes the first push block 181 out of the first hydraulic oil box 180, so that the hydraulic oil in the arc-shaped hydraulic rod 170 enters the first hydraulic oil box 180, and the arc-shaped hydraulic rod 170 is shortened, and the clamping top seat 150 and the clamping base 140 can both be separated from the pipe system.

[0065] Regarding the structure of the support mechanism 200, specifically:

[0066] It also includes a support mechanism 200 , which includes a first support frame 210 , on which a placement slot 220 is opened; the end of the double-threaded rod 120 is coaxially connected to a positioning rod 121 , and the positioning rod 121 is connected to the placement slot 220 .

[0067] The motor 110 is mounted on the first support frame 210, the double-threaded rod 120 is inserted into the sleeve 111, and the positioning rod 121 at the end of the double-threaded rod 120 is placed in the placement groove 220 on the first support frame 210, thereby ensuring that the double-threaded rod 120 is firmly supported.

[0068] Regarding how to prevent the threaded barrel 130 from rotating, specifically:

[0069] The first support frame 210 is connected to a directional rod 211 , and the side walls of the two threaded cylinders 130 are provided with grooves that match the directional rod 211 .

[0070] The groove on the side wall of the threaded barrel 130 is stuck on the directional rod 211, so that the threaded barrel 130 is limited and cannot rotate, thereby ensuring that the rotation of the double-threaded rod 120 can drive the two threaded barrels 130 to stably approach or move away from each other.

[0071] How to ensure that the two flanges are pushed apart equidistantly:

[0072] The support mechanism 200 also includes a second support frame 230, and the first support frame 210 slides axially on the second support frame 230 along the double-threaded rod 120; when only one of the two threaded cylinders 130 abuts against the corresponding flange, the first support frame 210 slides on the second support frame 230 toward the direction of the other threaded cylinder 130; when the two threaded cylinders 130 abut against the corresponding flange at the same time, the first support frame 210 does not slide relative to the second support frame 230.

[0073] The second support frame 230 is stably installed at the lower part of the pipe system. When the double-threaded rod 120 is controlled to rotate, the two threaded barrels 130 move away from each other. At this time, the two threaded barrels 130 approach the two flanges. If only one threaded barrel 130 contacts the flanges at this time, the movement of the threaded barrel 130 relative to the double-threaded rod 120 will cause the first support frame 210 to slide relative to the second support frame 230, ensuring that no single flange is pushed, thereby correcting the positions of the two threaded barrels 130. When the two threaded barrels 130 contact the two flanges at the same time, the rotation of the double-threaded rod 120 can cause the two threaded barrels 130 to push the two flanges away from each other at an equal distance.

[0074] Regarding how to ensure the second support frame 230 is level, specifically:

[0075] The support mechanism 200 also includes a piston cylinder 260 connected to the four corners of the lower surface of the second support frame 230, a piston rod 270 is slidably connected inside the piston cylinder 260, a circular plate 271 is connected to the bottom end of the piston rod 270, and a second spring 280 is connected between the circular plate 271 and the lower surface of the second support frame 230; the four piston rods 270 can slide different lengths relative to the corresponding piston cylinders 260, so that the table top of the second support frame 230 remains horizontal.

[0076] When the device is used externally, in order to maintain the horizontality of the second support frame 230, the four piston rods 270 on the lower surface of the second support frame 230 are controlled to slide different lengths relative to the corresponding piston cylinders 260 to ensure that the four circular plates 271 are firmly in contact with the ground, and the relative positions of the piston rods 270 and the piston cylinders 260 are locked, thereby maintaining the horizontal state of the second support frame 230.

[0077] Among the optional methods of this embodiment, the more preferred ones are:

[0078] The lower surface of the second support frame 230 is connected to the second hydraulic oil box 290, and the second push block 291 is slidably connected in the second hydraulic oil box 290, and the side wall of the second push block 291 is in contact with the inner wall of the second hydraulic oil box 290; the four piston cylinders 260 are connected to the second hydraulic oil box 290 through second oil pipes 292, and the four second oil pipes 292 are provided with solenoid valves 293; the four corners of the upper surface of the second support frame 230 are connected to the distance rods 250, when the tops of the four distance rods 250 are in contact with the bottom of the vehicle, the table surface of the second support frame 230 is horizontal; when the second push block 291 is pressed, the hydraulic oil in the second hydraulic oil box 290 is pumped into the four piston cylinders 260, so that the four circular plates 271 move down to contact the ground, and the tops of the four distance rods 250 are in contact with the bottom of the vehicle; when the solenoid valve 293 is closed, the four piston rods 270 maintain their relative positions with the corresponding piston cylinders 260.

[0079] When the device is in use, first control the second push block 291 to move away from the second hydraulic oil box 290. At this time, the second hydraulic oil box 290 extracts the hydraulic oil in the four piston cylinders 260 through the second oil pipe 292. At this time, the extension length of the four piston rods 270 relative to the corresponding four piston cylinders 260 is the shortest. The device is placed below the working position as a whole, and then the four distance rods 250 are inserted into the inserts 240 at the four corners of the second support frame 230. The second push block 291 is controlled to slide into the second hydraulic oil box 290. At this time, the second hydraulic The hydraulic oil in the oil box 290 enters the four piston cylinders 260 through the second oil pipe 292. At this time, the second support frame 230 moves up, so that the tops of the four distance rods 250 abut against the chassis of the vehicle, ensuring the horizontal state of the second support frame 230. After the four piston rods 270 are blocked from extending, the second push block 291 can no longer be pushed into the second hydraulic oil box 290. At this time, the four solenoid valves 293 are closed, so that the piston rod 270 no longer slides relative to the piston cylinder 260, thereby maintaining the horizontal state of the second support frame 230.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of each embodiment of the utility model.

Claims

1. A vehicle flange replacement auxiliary device, characterized in that ； It comprises a gap adjustment mechanism (100), wherein the gap adjustment mechanism (100) comprises a double-threaded rod (120); The double-threaded rod (120) is provided with two sections of threads which are equal and have opposite rotation directions, and the two sections of threads are both threadedly connected with a threaded barrel (130); The threaded barrel (130) is installed in the pipe system and is located between two flanges; When the double-threaded rod (120) rotates, the two threaded cylinders (130) can move away from each other and push the two flanges, thereby adjusting the gap between the two flanges.

2. The vehicle flange replacement auxiliary device according to claim 1, characterized in that ； The gap adjustment mechanism (100) further comprises a clamping base (140), wherein the clamping base (140) is connected to the threaded cylinder (130); A clamping top seat (150) is hingedly connected to the clamping base (140); The clamping top seat (150) can clamp the pipe system when it rotates and approaches the clamping base (140).

3. The vehicle flange replacement auxiliary device according to claim 2, characterized in that ； A seesaw (160) is connected to the clamping top seat (150) at a hinged portion close to the clamping base (140), and an arc-shaped hydraulic rod (170) is connected between the seesaw (160) and the clamping base (140); The center of the arc track formed by the arc hydraulic rod (170) falls on the axis of the hinge shaft between the clamping top seat (150) and the clamping base (140); When the arc-shaped hydraulic rod (170) is extended, it can push the clamping top seat (150) to approach the clamping base (140).

4. The vehicle flange replacement auxiliary device according to claim 3, characterized in that ； A first hydraulic oil box (180) is connected to the end surface of the clamping base (140), a first push block (181) is slidably connected inside the first hydraulic oil box (180), and a side wall of the first push block (181) is in contact with an inner wall of the first hydraulic oil box (180); A first oil pipe (190) is connected between the first hydraulic oil box (180) and the arc-shaped hydraulic rod (170); When the threaded cylinder (130) is close to the flange, the flange can push the first push block (181) to slide into the first hydraulic oil box (180), so that the arc-shaped hydraulic rod (170) is extended.

5. The vehicle flange replacement auxiliary device according to claim 4, It is characterized by: A first spring (182) is arranged in the first hydraulic oil box (180), and two ends of the first spring (182) are respectively connected to the first push block (181) and the first hydraulic oil box (180).

6. The vehicle flange replacement auxiliary device according to claim 5, characterized in that ； It also includes a support mechanism (200), wherein the support mechanism (200) includes a first support frame (210), and a placement groove (220) is provided on the first support frame (210); The end of the double-threaded rod (120) is coaxially connected to a positioning rod (121), and the positioning rod (121) is connected to the placement groove (220).

7. The vehicle flange replacement auxiliary device according to claim 6, characterized in that ； The first support frame (210) is connected to a directional rod (211), and the side walls of the two threaded cylinders (130) are provided with grooves that match the directional rod (211).

8. The vehicle flange replacement auxiliary device according to claim 7, It is characterized by: The support mechanism (200) further comprises a second support frame (230), wherein the first support frame (210) slides axially on the second support frame (230) along the double-threaded rod (120); When only one of the two threaded barrels (130) abuts against the corresponding flange, the first support frame (210) slides on the second support frame (230) toward the other threaded barrel (130); When the two threaded cylinders (130) abut against the corresponding flanges at the same time, the first support frame (210) does not slide relative to the second support frame (230).

9. The vehicle flange replacement auxiliary device according to claim 8, It is characterized by: The support mechanism (200) further comprises a piston cylinder (260) connected to the four corners of the lower surface of the second support frame (230), a piston rod (270) being slidably connected inside the piston cylinder (260), a circular plate (271) being connected to the bottom end of the piston rod (270), and a second spring (280) being connected between the circular plate (271) and the lower surface of the second support frame (230); The four piston rods (270) can slide at different lengths relative to the corresponding piston cylinders (260), so that the table surface of the second support frame (230) remains horizontal.

10. The vehicle flange replacement auxiliary device according to claim 9, characterized in that ； The lower surface of the second support frame (230) is connected to a second hydraulic oil box (290), a second push block (291) is slidably connected inside the second hydraulic oil box (290), and a side wall of the second push block (291) is in contact with an inner wall of the second hydraulic oil box (290); A second oil pipe (292) is connected between each of the four piston cylinders (260) and the second hydraulic oil box (290), and each of the four second oil pipes (292) is provided with a solenoid valve (293); Four corners of the upper surface of the second support frame (230) are connected to distance rods (250), and when the tops of the four distance rods (250) are in contact with the bottom of the vehicle, the surface of the second support frame (230) is horizontal; When the second push block (291) is pressed, the hydraulic oil in the second hydraulic oil box (290) is pumped into the four piston cylinders (260), so that the four circular plates (271) move downward to contact the ground, and the tops of the four distance rods (250) contact the bottom of the vehicle; When the solenoid valve (293) is closed, the four piston rods (270) maintain relative positions with the corresponding piston cylinders (260).

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