Technological method for connecting heavy load leveling mechanism of rail engineering vehicle

Abstract

The invention provides a technological method for connecting a heavy load leveling mechanism of a rail engineering vehicle. The technological method comprises the following steps that S1, in the manufacturing process of a leveling bottom frame, the flatness of the plane where a mounting base of the leveling bottom frame is located is guaranteed; according to the technical method for connecting the heavy-load leveling mechanism of the rail engineering vehicle, the problems that due to the fact that the weight of leveling mechanism equipment and materials is large, the deflection change of a vehicle frame is large under the gravity effect, the positions of three installation bases and hinge pins are changed, the coaxiality of the hinge pins is out of tolerance, and the service life is short are effectively solved. Meanwhile, the problems that the connection deformation amount of the leveling mechanism and the frame statically indeterminate structure is complex to calculate, the deformation condition is difficult to predict, and the concentricity of the pin shafts in the servicing state cannot be guaranteed through conventional methods such as reserved height difference or prefabricated reversible deformation are solved; normal use and smooth rotation of the leveling mechanism in a servicing state are guaranteed, and field operation is simple, convenient and feasible.

Description

Technical Field

[0001] The invention relates to the technical field of track engineering, and in particular to a process method for connecting a heavy-load leveling mechanism of a track engineering vehicle. Background Art

[0002] As the types of operating equipment on rail engineering vehicles increase, some equipment, especially some heavier equipment, are required to be in a horizontal state under operating conditions, and these equipment need to be installed on a leveling mechanism.

[0003] The leveling mechanism in the prior art generally consists of a leveling frame, a rotating pin, a frame mounting seat, a leveling cylinder mounting seat and a leveling cylinder, wherein the frame mounting seat is connected to the frame, and the mounting seat is connected to the leveling frame, and the two are connected by a rotating pin, and the leveling cylinders on both sides are connected to the frame and the leveling frame through the leveling cylinder seats, and then the state of the leveling mechanism is adjusted by the leveling cylinders on both sides. After leveling, the leveling mechanism in the no-load state is directly welded to the frame, which can ensure that the concentricity of the rotating pin meets the requirements and rotates smoothly.

[0004] However, due to the heavy weight of the equipment and materials on the leveling mechanism, after the equipment and materials are in place, the deflection of the frame changes greatly under the action of gravity, the positions of the three mounting seats and the pins change, and the size of the middle mounting seat changes greatly compared to the mounting seats on both sides. The coaxiality of the three pins is out of tolerance, causing the leveling mechanism to get stuck or even unable to rotate; and the leveling mechanism and the frame are connected with an over-static structure, the deformation calculation is complicated, and the deformation is difficult to predict. It is impossible to ensure the concentricity of the pins in the ready state by reserving height difference or pre-fabricating reverse deformation.

[0005] Therefore, it is necessary to provide a process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle to solve the above technical problems. Summary of the invention

[0006] The invention provides a process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle, which solves the problem that the deformation of the leveling mechanism is difficult to predict and the coaxiality of the pin shaft in a ready state cannot be ensured by preventive measures.

[0007] In order to solve the above technical problems, the present invention provides a process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle, comprising the following steps:

[0008] S1. During the manufacturing process of the leveling chassis, the flatness of the plane where the mounting seat is located is ensured;

[0009] S2. Use a steel pipe or round rod (whose outer diameter is 1mm smaller than the mounting seat sleeve and whose length exceeds the mounting seat welding position) to penetrate into the mounting seat sleeve, and then place it on the position of the leveling chassis for welding, ensuring that the coaxiality of the mounting seat sleeve hole is no more than 1mm after welding;

[0010] S3. Use a temporary pin (1mm smaller than the inner diameter of the sleeve) to connect the mounting base to the frame connection base, and then place it on the frame according to the drawing requirements. Use the adjustment device near the leveling cylinder mounting base to adjust the leveling chassis to the level of the upper plane;

[0011] S4. Use a counterweight to preload the weight to a fully loaded state according to the mass distribution of the equipment when the leveling mechanism is installed, and then weld the frame connection seat and the frame weld;

[0012] S5. Use the adjustment equipment to lift up the leveling frame, remove the temporary pin and install the rotating pin, and remove the counterweight after the replacement is completed;

[0013] S6. After the counterweight is removed, the frame deflection is restored, and the concentricity of the three pins connecting the frame connection seat and the leveling frame becomes larger. The leveling mechanism is stuck and cannot rotate in the free state. When the equipment is installed and the vehicle reaches the ready state, the frame deflection returns to the state during welding, the concentricity of the pins is restored, and the leveling frame resumes rotation.

[0014] Preferably, in step S4, the leveling chassis is connected to the frame connecting seat by using a temporary pin shaft and then placed on the frame, and the leveling equipment is used to adjust the upper plane of the leveling chassis to a horizontal level, and then the counterweight is used to load the leveling mechanism to a ready state according to the mass distribution of the equipment when it is working, and finally the frame connecting seat is connected to the frame.

[0015] Preferably, the leveling chassis does not need to be prefabricated and deformed, and the coaxiality of the mounting seat sleeve welded on the lower plane must be ensured to be in the same straight line.

[0016] Preferably, the adjusting device used in step S3 comprises a jack, the bottom of the jack is rotatably connected to a rotating seat, the bottom of the rotating seat is fixedly installed with a bottom plate, the side of the bottom plate is fixedly installed with a side plate, the top of the side plate is fixedly installed with a threaded sleeve, the inner side surface of the threaded sleeve is threadedly connected with a screw rod, the top of the screw rod is fixedly installed with a rotating handle, and the top of the rotating handle is rotatably connected to a top plate.

[0017] Preferably, a positioning plate is fixedly mounted on the top of the outer side surface of the threaded sleeve, and a positioning groove is formed inside one end of the positioning plate.

[0018] Preferably, a limiting plate is fixedly mounted on the bottom of the top plate, a first tooth plate is fixedly mounted on one side of the limiting plate, and two sides of the limiting plate are respectively attached to two sides of the inner side surface of the positioning groove.

[0019] Preferably, a limiting assembly is fixedly installed inside one end of the positioning plate, and the limiting assembly includes a mounting frame, a threaded rod, a rotating plate, a moving plate, a sliding rod, a baffle, a spring, a pushing plate and a second tooth plate.

[0020] Preferably, the mounting frame is fixedly mounted inside one end of the positioning plate, the threaded rod is threadedly connected to the inside of one side of the mounting frame, the rotating plate is fixedly mounted on one end of the threaded rod, the movable plate is rotatably connected to the other end of the threaded rod, the sliding rod is slidably connected to the inside of the top and bottom of the movable plate respectively, the spring is sleeved on the outer side of the sliding rod, the pushing plate is fixedly mounted on one end of the sliding rod, and the second tooth plate is fixedly mounted on one side of the pushing plate.

[0021] Preferably, the outer side surfaces of the movable plate and the pushing plate are both slidably connected to the inner side surface of the mounting frame, the baffle is fixedly mounted on the other end of the sliding rod, the spring is arranged in the middle of the pushing plate and the movable plate, and the second tooth plate and the first tooth plate are arranged opposite to each other.

[0022] Preferably, a mounting plate is provided on the top of the top plate, and a rubber pad is fixedly installed on the top of the mounting plate.

[0023] Preferably, positioning rods are fixedly mounted on both ends of the bottom of the mounting plate, and the positioning rods are arranged inside the top plate.

[0024] Preferably, a sliding groove is opened inside the bottom of the positioning rod, a support plate is fixedly installed on the inner side of the sliding groove, spring telescopic rods are fixedly installed on both sides of the support plate, and one end of the two spring telescopic rods is fixedly installed with a clamping block, the two clamping blocks are slidably connected to the inner side of the sliding groove, and the two clamping blocks are arranged at the bottom of the top plate.

[0025] Compared with the related art, the process method for connecting the heavy-load leveling mechanism of a rail engineering vehicle provided by the present invention has the following beneficial effects:

[0026] The present invention provides a process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle. The process firstly strictly ensures the coaxiality of the shaft sleeve of the mounting seat on the leveling mechanism during the manufacturing process of the leveling mechanism, then uses a temporary pin shaft to connect the mounting seat with the frame connecting seat and places it on the frame according to the drawing, uses an adjustment device to level the leveling frame near the leveling cylinder mounting seat, then uses a counterweight block to preload according to the mass distribution of the equipment tooling when the leveling mechanism is fully loaded, then welds the frame connecting seat and the frame weld, and then lifts up the leveling frame to remove the temporary pin shaft, installs the rotating pin shaft, and removes the counterweight, which is effective. The invention solves the problem that the frame deflection changes greatly under the action of gravity, the position of the three mounting seats and the pin shaft change, and the coaxiality of the pin shaft exceeds the tolerance, which causes the rotation of the leveling mechanism to be stuck or even unable to rotate. At the same time, it overcomes the difficulties of complex deformation calculation of the connection between the leveling mechanism and the statically indeterminate structure of the frame, difficult to predict the deformation, and inability to ensure the concentricity of the pin shaft in the ready state through conventional methods such as reserved height difference or prefabricated reverse deformation. It ensures the normal use and smooth rotation of the leveling mechanism in the ready state, and the on-site operation is simple and easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the leveling mechanism provided by the present invention;

[0028] Figure 2 A schematic diagram of the leveling mechanism and equipment installation structure provided by the present invention;

[0029] Figure 3 A schematic diagram of the welding structure of the mounting base provided by the present invention;

[0030] Figure 4 A schematic diagram of the placement structure of the leveling mechanism provided by the present invention;

[0031] Figure 5 A schematic diagram of the preloading structure on the flat mechanism provided by the present invention;

[0032] Figure 6 A schematic structural diagram of a first embodiment of an adjusting device for a process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle provided by the present invention;

[0033] Figure 7 for Figure 6 Another perspective structural schematic diagram shown;

[0034] Figure 8 for Figure 6 An enlarged schematic diagram of part A is shown;

[0035] Fig. 9 for Figure 8 The schematic diagram of the cross-sectional structure of the limiting component shown;

[0036] Fig.10A schematic structural diagram of a second embodiment of an adjusting device for a process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle provided by the present invention;

[0037] Fig.11 for Fig.10 Schematic diagram of the cross-sectional structure of the positioning rod shown.

[0038] Numbers in the figure: 1, bottom plate, 11, rotating seat, 12, jack, 2, side plate, 21, threaded sleeve, 22, screw rod, 23, rotating handle, 24, top plate, 3, limit plate, 31, first tooth plate, 4, positioning plate, 41, positioning groove, 5, limit assembly, 51, mounting frame, 52, threaded rod, 53, rotating handle, 54, moving plate, 55, sliding rod, 56, baffle, 57, spring, 58, pushing plate, 59, second tooth plate, 6, mounting plate, 61, rubber pad, 62, positioning rod, 63, slide groove, 64, support plate, 65, spring telescopic rod, 66, clamping block. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0040] First embodiment

[0041] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 ,in, Figure 1 A schematic diagram of the structure of the leveling mechanism provided by the present invention; Figure 2 A schematic diagram of the leveling mechanism and equipment installation structure provided by the present invention; Figure 3 A schematic diagram of the welding structure of the mounting base provided by the present invention; Figure 4 A schematic diagram of the placement structure of the leveling mechanism provided by the present invention; Figure 5 A schematic diagram of the preloading structure on the flat mechanism provided by the present invention; Figure 6 A schematic structural diagram of a first embodiment of an adjusting device for a process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle provided by the present invention; Figure 7 for Figure 6 Another perspective structural schematic diagram shown; Figure 8 for Figure 6 An enlarged schematic diagram of part A is shown; Fig. 9 for Figure 8 A process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle comprises the following steps:

[0042] S1. During the manufacturing process of the leveling chassis, the flatness of the plane where the mounting seat is located is ensured;

[0043] S2. Use a steel pipe or round rod (whose outer diameter is 1mm smaller than the mounting seat sleeve and whose length exceeds the mounting seat welding position) to penetrate into the mounting seat sleeve, and then place it on the position of the leveling chassis for welding, ensuring that the coaxiality of the mounting seat sleeve hole is no more than 1mm after welding;

[0044] S3. Use a temporary pin (1mm smaller than the inner diameter of the sleeve) to connect the mounting base to the frame connection base, and then place it on the frame according to the drawing requirements. Use the adjustment device near the leveling cylinder mounting base to adjust the leveling chassis to the level of the upper plane;

[0045] S4. Use a counterweight to preload the weight to a fully loaded state according to the mass distribution of the equipment when the leveling mechanism is installed, and then weld the frame connection seat and the frame weld;

[0046] S5. Use the adjustment equipment to lift up the leveling frame, remove the temporary pin and install the rotating pin, and remove the counterweight after the replacement is completed;

[0047] S6. After the counterweight is removed, the frame deflection is restored, and the concentricity of the three pins connecting the frame connection seat and the leveling frame becomes larger. The leveling mechanism is stuck and cannot rotate in the free state. When the equipment is installed and the vehicle reaches the ready state, the frame deflection returns to the state during welding, the concentricity of the pins is restored, and the leveling frame resumes rotation.

[0048] In step S4, the leveling chassis is connected to the frame connecting seat by using a temporary pin shaft and then placed on the frame, and the leveling equipment is used to adjust the upper plane of the leveling chassis to a horizontal level, and then the counterweight is used to load the leveling mechanism to a ready state according to the mass distribution of the equipment when it is working, and finally the frame connecting seat is connected to the frame.

[0049] The leveling chassis does not need to be prefabricated and deformed, but the coaxiality of the mounting seat sleeve welded on the lower plane must be ensured to be in the same straight line.

[0050] The adjusting device used in step S3 includes a jack 12, the bottom of the jack 11 is rotatably connected to a rotating seat 11, the bottom of the rotating seat 11 is fixedly installed with a base plate 1, the side of the base plate 1 is fixedly installed with a side plate 2, the top of the side plate 2 is fixedly installed with a threaded sleeve 21, the inner side surface of the threaded sleeve 21 is threadedly connected with a screw rod 22, the top of the screw rod 22 is fixedly installed with a handle 23, and the top of the handle 23 is rotatably connected to a top plate 24.

[0051] A positioning plate 41 is fixedly mounted on the top of the outer side of the threaded sleeve 21 , and a positioning groove 41 is formed inside one end of the positioning plate 41 .

[0052] A limiting plate 3 is fixedly mounted on the bottom of the top plate 24 , a first tooth plate 31 is fixedly mounted on one side of the limiting plate 3 , and two sides of the limiting plate 3 are respectively attached to two sides of the inner side of the positioning groove 41 .

[0053] By sliding the limit plate 3 on the inner side of the positioning groove 41, the limit plate 3 can limit the top plate 24 during use to prevent the top plate 24 from rotating during the lifting process, thereby increasing the stability of the top plate 24 when moving.

[0054] A limiting assembly 5 is fixedly installed inside one end of the positioning plate 4 , and the limiting assembly 5 includes a mounting frame 51 , a threaded rod 52 , a rotating plate 53 , a moving plate 54 , a sliding rod 55 , a baffle 56 , a spring 57 , a pushing plate 58 and a second tooth plate 59 .

[0055] The mounting frame 51 is fixedly mounted inside one end of the positioning plate 41, the threaded rod 52 is threadedly connected to the inside of one side of the mounting frame 51, the rotating plate 53 is fixedly mounted on one end of the threaded rod 52, the movable plate 54 is rotatably connected to the other end of the threaded rod 52, the sliding rod 55 is slidably connected to the top and bottom of the movable plate 54 respectively, the spring 57 is sleeved on the outer side surface of the sliding rod 55, the pushing plate 58 is fixedly mounted on one end of the sliding rod 55, and the second tooth plate 59 is fixedly mounted on one side of the pushing plate 58.

[0056] Before adjusting the height of the top plate 24, the user first rotates the rotating plate 53, so that the rotating plate 53 drives the threaded rod 52 to be threadedly connected inside the mounting frame 51, thereby driving the movable plate 54 and the pushing plate 58 to move toward one side of the first tooth plate 31, so that the first tooth plate 31 and the second tooth plate 59 are meshed. When the top plate 24 moves upward, it will drive the limiting plate 3 and the first tooth plate 31 to move upward. At this time, the pushing plate 58 is pushed by the spring 57, so that the second tooth plate 59 and the first tooth plate 31 can always be meshed, thereby playing a role in limiting the top plate 24 and increasing the stability of the manufacturing process.

[0057] When disassembly is required later, the second tooth plate 59 needs to be adjusted to be away from the first tooth plate 31 first.

[0058] The outer side surfaces of the movable plate 54 and the pushing plate 58 are both slidably connected to the inner side surface of the mounting frame 51, the baffle 56 is fixedly installed on the other end of the slide rod 55, the spring 57 is arranged between the pushing plate 58 and the movable plate 54, and the second tooth plate 59 and the first tooth plate 31 are arranged opposite to each other.

[0059] When in use, the base plate 1 is placed on the vehicle frame, the top of the jack 12 and the cylinder mounting seat are installed, and then the jack 12 is extended to adjust the base frame. After adjusting to a suitable angle, the user rotates the handle 23 so that the handle 23 drives the screw rod 22 to be threadedly connected to the inner side of the threaded sleeve 21, so that the top of the screw rod 22 drives the top plate 24 to move upward, so that the top of the top plate 24 abuts against the bottom of the leveling base frame, thereby supporting the leveling base frame and preventing the jack 12 from being under pressure for a long time.

[0060] Compared with the related art, the process method for connecting the heavy-load leveling mechanism of a rail engineering vehicle provided by the present invention has the following beneficial effects:

[0061] The coaxiality of the mounting seat sleeve is strictly ensured during the manufacturing process of the leveling mechanism, and then the mounting seat is connected to the frame connecting seat by using a temporary pin and placed on the frame according to the drawing. The adjustment equipment is used to level the leveling frame near the leveling cylinder mounting seat, and then the counterweight is used to preload according to the mass distribution of the equipment tooling when the leveling mechanism is fully loaded, and then the frame connecting seat and the frame weld are welded. After that, the leveling frame is lifted up to remove the temporary pin, and the rotating pin is installed and the counterweight is removed. This effectively solves the problem that the frame deflection changes greatly under the action of gravity due to the heavy weight of the leveling mechanism equipment and materials, the position of the three mounting seats and the pin changes, and the coaxiality of the pin is out of tolerance, which causes the leveling mechanism to be stuck or even unable to rotate. At the same time, it overcomes the difficulties of complex calculation of the deformation amount of the connection between the leveling mechanism and the frame hyperstatic structure, difficult to predict the deformation, and inability to ensure the concentricity of the pin in the ready state by conventional methods such as reserved height difference or prefabricated reverse deformation. This ensures the normal use and smooth rotation of the leveling mechanism in the ready state, and the on-site operation is simple and easy.

[0062] Second embodiment

[0063] Please refer to Fig.10 , Fig.11 Based on the process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle provided in the first embodiment of the present application, the second embodiment of the present application proposes another process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle. The second embodiment is only a preferred method of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0064] Specifically, the difference of the process method for connecting the heavy-load leveling mechanism of a rail engineering vehicle provided in the second embodiment of the present application is that, in the process method for connecting the heavy-load leveling mechanism of a rail engineering vehicle, a mounting plate 6 is provided on the top of the top plate 24, and a rubber pad 61 is fixedly installed on the top of the mounting plate 6.

[0065] Positioning rods 62 are fixedly mounted on both ends of the bottom of the mounting plate 6 , and the positioning rods 62 are arranged inside the top plate 24 .

[0066] A slide groove 63 is provided inside the bottom of the positioning rod 62, and a support plate 64 is fixedly installed on the inner side surface of the slide groove 63. Spring telescopic rods 65 are fixedly installed on both sides of the support plate 64. One end of the two spring telescopic rods 65 is fixedly installed with a clamping block 66. The two clamping blocks 66 are slidably connected to the inner side surface of the slide groove 63, and the two clamping blocks 66 are arranged at the bottom of the top plate 24.

[0067] When disassembly is required and installation is required, the user can directly place the bottom of the clamping block 66 against the top of the top plate 24 and then press downward. At this time, the clamping block 66 will move toward the inner side of the slide groove 63 until the clamping block 66 moves to the bottom of the top plate 24. Only then will the clamping block 66 move out from the inner side of the slide groove 63, thereby limiting the positioning rod 62.

[0068] The working principle of a process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle provided by the present invention is as follows:

[0069] When in use, the top of the rubber pad 61 can be abutted against the top of the leveling frame to play an anti-slip role. After long-term use, when the rubber pad 61 is severely worn, the user can push the two clamping blocks 66 to move the two clamping blocks 66 toward the inner side of the slide groove 63, thereby contracting the spring telescopic rod 65, and then move the mounting plate 6 upward, thereby removing the positioning rod 62 from the inside of the top plate 24, thereby disassembling the mounting plate 6 and the rubber pad 61.

[0070] Compared with the related art, the process method for connecting the heavy-load leveling mechanism of a rail engineering vehicle provided by the present invention has the following beneficial effects:

[0071] By providing the mounting plate 6 and the rubber pad 61 , the top of the rubber pad 61 can be in contact with the bottom of the leveling chassis during use, thereby playing an anti-slip role and increasing the stability of the support.

[0072] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A process for connecting a heavy-load leveling mechanism of a rail engineering vehicle, characterized in that: The following steps are involved: S1. During the manufacturing process of the leveling chassis, the flatness of the plane where the mounting seat is located is ensured; S2. Use a steel pipe or round rod (whose outer diameter is 1mm smaller than the mounting seat sleeve and whose length exceeds the mounting seat welding position) to penetrate into the mounting seat sleeve, and then place it on the position of the leveling chassis for welding, ensuring that the coaxiality of the mounting seat sleeve hole is no more than 1mm after welding; S3. Use a temporary pin (1mm smaller than the inner diameter of the sleeve) to connect the mounting base to the frame connection base, and then place it on the frame according to the drawing requirements. Use the adjustment device near the leveling cylinder mounting base to adjust the leveling chassis to the level of the upper plane; S4. Use a counterweight to preload the weight to a fully loaded state according to the mass distribution of the equipment when the leveling mechanism is installed, and then weld the frame connection seat and the frame weld; S5. Use the adjustment equipment to lift up the leveling frame, remove the temporary pin and install the rotating pin, and remove the counterweight after the replacement is completed; S6. After the counterweight is removed, the frame deflection is restored, and the concentricity of the three pins connecting the frame connection seat and the leveling frame becomes larger. The leveling mechanism is stuck and cannot rotate in the free state. When the equipment is installed and the vehicle reaches the ready state, the frame deflection returns to the state during welding, the concentricity of the pins is restored, and the leveling frame resumes rotation.

2. The process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle according to claim 1 is characterized in that: In step S4, the leveling chassis is connected to the frame connecting seat by using a temporary pin shaft and then placed on the frame, and the leveling equipment is used to adjust the upper plane of the leveling chassis to a horizontal level, and then the counterweight is used to load the leveling mechanism to a ready state according to the mass distribution of the equipment when it is working, and finally the frame connecting seat is connected to the frame.

3. The process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle according to claim 2 is characterized in that: The leveling chassis does not need to be prefabricated and deformed, but the coaxiality of the mounting seat sleeve welded on the lower plane must be ensured to be in the same straight line.

4. The process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle according to claim 1, characterized in that: The adjusting device used in step S3 includes a jack, the bottom of the jack is rotatably connected to a rotating seat, the bottom of the rotating seat is fixedly installed with a bottom plate, the side of the bottom plate is fixedly installed with a side plate, the top of the side plate is fixedly installed with a threaded sleeve, the inner side of the threaded sleeve is threadedly connected with a screw rod, the top of the screw rod is fixedly installed with a rotating handle, and the top of the rotating handle is rotatably connected to a top plate.

5. The process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle according to claim 4 is characterized in that: A positioning plate is fixedly installed on the top of the outer side of the threaded sleeve, and a positioning groove is opened inside one end of the positioning plate.

6. A process for connecting a heavy-load leveling mechanism of a rail engineering vehicle according to claim 5, characterized in that: A limiting plate is fixedly mounted on the bottom of the top plate, a first tooth plate is fixedly mounted on one side of the limiting plate, and two sides of the limiting plate are respectively attached to two sides of the inner side surface of the positioning groove.

7. A process for connecting a heavy-load leveling mechanism of a rail engineering vehicle according to claim 6, characterized in that: A limiting assembly is fixedly installed inside one end of the positioning plate, and the limiting assembly includes a mounting frame, a threaded rod, a rotating plate, a moving plate, a sliding rod, a baffle, a spring, a pushing plate and a second tooth plate.

8. The process method for connecting a heavy-load leveling mechanism of a rail engineering vehicle according to claim 7, characterized in that: The mounting frame is fixedly mounted inside one end of the positioning plate, the threaded rod is threadedly connected to the inside of one side of the mounting frame, the rotating plate is fixedly mounted on one end of the threaded rod, the movable plate is rotatably connected to the other end of the threaded rod, the sliding rod is slidably connected to the top and bottom of the movable plate respectively, the spring is sleeved on the outer side of the sliding rod, the pushing plate is fixedly mounted on one end of the sliding rod, and the second tooth plate is fixedly mounted on one side of the pushing plate.

9. A process for connecting a heavy-load leveling mechanism of a rail engineering vehicle according to claim 8, characterized in that: The outer sides of the movable plate and the pushing plate are both slidably connected to the inner side of the mounting frame, the baffle is fixedly mounted on the other end of the slide rod, the spring is arranged between the pushing plate and the movable plate, and the second tooth plate and the first tooth plate are arranged opposite to each other.

10. A process for connecting a heavy-load leveling mechanism of a rail engineering vehicle according to claim 9, characterized in that: A mounting plate is provided on the top of the top plate, and a rubber pad is fixedly installed on the top of the mounting plate; positioning rods are fixedly installed on both ends of the bottom of the mounting plate, and the positioning rods are arranged inside the top plate; a sliding groove is opened inside the bottom of the positioning rod, and a supporting plate is fixedly installed on the inner side of the sliding groove, and spring telescopic rods are fixedly installed on both sides of the support plate, and one end of the two spring telescopic rods is fixedly installed with a clamping block, and the two clamping blocks are slidably connected to the inner side of the sliding groove, and the two clamping blocks are arranged at the bottom of the top plate.

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