A levelable railway electrification construction ladder vehicle

Abstract

The present invention relates to a levelable railway electrification construction ladder vehicle, comprising a vehicle base, a rail grabber arranged under the vehicle base, and an operating platform arranged above the vehicle base, wherein the operating platform and the vehicle base are connected via a cylinder, and a groove is embedded in the side surface of the operating platform, and a buffer rod is slidingly provided in the groove. When the ladder vehicle of the present invention tilts to a certain degree, a sliding block is triggered to slide in a horizontal slide rail and squeeze a pneumatic switch. After the pneumatic switch is pressed, under the action of the pressure of the operating platform, the air in the cylinder barrel is quickly discharged through a pressure relief pipe and enters the groove, so that the buffer plate extends from the side of the operating platform to play a protective role. Moreover, due to the discharge of the air in the cylinder, the cylinder is automatically shortened, thereby lowering the center of gravity of the ladder vehicle, improving the stability of the ladder vehicle, and minimizing the risk of operators working at heights.

Description

Technical Field

[0001] The invention relates to the technical field of railway ladder vehicles, in particular to a levelable railway electrification construction ladder vehicle. Background Art

[0002] The contact network is a high-voltage transmission line installed in a zigzag shape above the rails in an electrified railway, which is used for pantographs to draw current. The ladder car is an indispensable auxiliary tool in the daily maintenance and inspection of the contact network. It consists of an aluminum alloy scaffolding at the bottom and above it, as well as ejection racks on both sides.

[0003] Ladder cars inevitably have poor stability due to their high location. Although the existing technology uses rail grippers to connect the ladder car to the rails, the rails have unevenness on both sides at the curved part, and the ladder car is sometimes used directly without being connected to the rails. After searching, most of the existing patents are mainly for improving the rail grippers, such as the Chinese patent "Anti-rollover device for overhead contact network operation ladder car" (authorization announcement number CN 211995564U) and the Chinese patent "Car ladder for electrified railway overhead contact network maintenance" (authorization announcement number CN 104612580 B), both of which involve rail gripping structures to improve anti-tilting capabilities.

[0004] In view of the above-mentioned existing technologies, the inventor believes that by improving the track gripper, the firmness of the connection between the bottom of the ladder car and the rails can indeed be effectively improved. However, the inventor has not yet retrieved any relevant improvements that can protect the ladder car from self-destruction when it tips over. As a result, when the ladder car accidentally tips over, the workers on the operating platform will fall directly from a height, which will directly affect their personal safety. Therefore, there is still room for technical improvement and quality improvement in railway electrification construction ladder cars. Summary of the Invention

[0005] In response to the problems in the prior art, the present invention provides a levelable railway electrification construction ladder vehicle, comprising a vehicle base, a rail grabber arranged below the vehicle base, and an operating platform arranged above the vehicle base, wherein the operating platform and the vehicle base are connected via a cylinder, a groove is embedded in the side of the operating platform, a buffer rod is slidably arranged in the groove, one end of the buffer rod is connected to the inner end of the groove with a first spring, the other end of the buffer rod is fixed with a buffer plate, and a pressure relief pipe is connected between the groove and the cylinder barrel of the cylinder;

[0006] A pressure relief control mechanism is provided at the bottom of the operating platform, comprising a horizontal slide rail fixed to the bottom of the operating platform, a trigger sliding block slidingly provided in the horizontal slide rail, a second spring connected to the trigger sliding block and the inner side of the horizontal slide rail, a pneumatic switch fixed to the outer side of the horizontal slide rail, and the pneumatic switch mounted on the pressure relief pipe;

[0007] A counterweight base is slidingly provided on the surface of the vehicle base, and a driving mechanism for driving the counterweight base to slide is provided on the vehicle base. The upper end of the cylinder is slidably installed with the bottom of the operating platform, and a retractable connecting component is fixed between the operating platform and the counterweight base.

[0008] Preferably, the number of the grooves is two, the two grooves are symmetrically arranged on both sides of the operating platform, and a pressure relief hole is provided through the bottom of the groove.

[0009] Preferably, the buffer rod includes a first sliding rod having one end slidably connected to the groove and a second sliding rod slidably connected to the first sliding rod, a third spring is connected between the second sliding rod and the first sliding rod, and the buffer plate is fixedly connected to the second sliding rod.

[0010] Preferably, the driving mechanism includes a fixed slide rail fixed on the vehicle base, the counterweight base is slidingly connected to the fixed slide rail, the fixed slide rail is rotatably provided with a screw, the screw is threadedly connected to the counterweight base, a stepper motor is fixed to one end of the fixed slide rail, the output shaft of the stepper motor is fixedly connected to one end of the screw, a stepper motor switch is installed on the outer side of the horizontal slide rail, and the stepper motor switch is electrically connected to the stepper motor.

[0011] Preferably, a one-way valve is connected between the pneumatic switch and the groove.

[0012] Preferably, the telescopic connecting member includes a fixed rod with one end fixed to the operating platform, the fixed rod is slidably sleeved with a sliding rod, and the lower end of the sliding rod is fixedly connected to the counterweight base.

[0013] Preferably, a T-shaped slider is fixed to the upper end of the cylinder, a T-shaped slot is embedded in the bottom of the operating platform, and the T-shaped slider is slidably connected to the T-shaped slot.

[0014] Preferably, guardrails are provided around the operating platform, and a guardrail door is rotatably installed on one side of the guardrail.

[0015] Preferably, a support plate is provided in the vehicle base in the opposite sliding direction to the counterweight base, a first rack is fixed to the support plate, a gear is rotatably provided in the vehicle base, a second rack is fixed to the counterweight base, the second rack is meshed and connected with the upper side of the gear, and the first rack is meshed and connected with the lower side of the gear.

[0016] Preferably, a slide groove with openings at both ends is embedded in the vehicle base, the support plate is slidably installed in the slide groove, a connecting block is fixed to the lower end of the counterweight base, the connecting block is fixedly connected to the second rack, the connecting block is slidably connected to the fixed slide rail and is threadedly connected to the screw, and the lower end of the connecting block passes through the slide groove.

[0017] The technical solution adopted by the present invention to solve its technical problem is:

[0018] The beneficial effects of the present invention are:

[0019] 1. When the ladder car of the present invention tilts to a certain degree, the triggering sliding block slides in the horizontal slide rail and squeezes the pneumatic switch. After the pneumatic switch is pressed, the air in the cylinder barrel is quickly discharged through the pressure relief pipe and enters the groove under the pressure of the operating platform, causing the buffer plate to extend from the side of the operating platform to play a protective role. In addition, due to the discharge of air in the cylinder, the cylinder automatically shortens, lowering the center of gravity of the ladder car and improving the stability of the ladder car. In addition, due to the shortening of the cylinder, the height of the operating platform is reduced, minimizing the risk of operators working at heights.

[0020] 2. When the ladder car tilts severely, the present invention triggers the sliding block to slide in the horizontal slide rail and squeeze the stepper motor switch, so that the stepper motor circuit is connected and starts working. When the output shaft of the stepper motor rotates, it drives the screw to rotate. When the screw rotates, it drives the counterweight base to slide toward the side away from the tilting ladder car, thereby increasing the weight of the ladder car away from the tilting side. By adjusting the center of gravity, the balance of the ladder car is adjusted, thereby improving the stability of the ladder car.

[0021] 3. A retractable connecting member is fixed between the operating platform and the counterweight base of the present invention. When the ladder vehicle tilts toward one side, the counterweight base slides toward the other side under the action of the driving mechanism. When the counterweight base slides toward the other side, the retractable connecting member drives the operating platform to move together. When the ladder vehicle falls to the ground, the operating platform can be kept as far away from the ground as possible to prevent it from hitting hard objects on the ground.

[0022] 4. A support plate is slidingly provided inside the vehicle base of the ladder trolley of the present invention. When the ladder trolley tilts toward one side, the counterweight base is driven to move in the opposite direction under the action of the driving mechanism. When the counterweight base moves, the second rack drives the gear to rotate, and the rotation of the gear drives the first rack to slide. The sliding of the first rack drives the support plate to extend toward the tilted side of the ladder trolley, thereby supporting the tilted side of the ladder trolley and further preventing the ladder trolley from tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and examples.

[0024] Figure 1A schematic diagram of the overall structure of a preferred embodiment of a levelable railway electrified construction ladder vehicle provided by the present invention;

[0025] Figure 2 A schematic diagram of a three-dimensional structure of the present invention;

[0026] Figure 3 It is another three-dimensional structural schematic diagram of the present invention;

[0027] Figure 4 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0028] Figure 5 For the present invention Figure 1 Enlarged structural diagram at point B in the middle.

[0029] In the figure: 1. Car base; 2. Track grabber; 3. Operating platform; 4. Cylinder; 5. Groove; 6. Buffer rod; 7. First spring; 8. Buffer plate; 9. Pressure relief pipe; 91. Branch pipe; 10. Pressure relief control mechanism; 11. Horizontal slide rail; 12. Trigger slide block; 13. Second spring; 14. Pneumatic switch; 15. Counterweight base; 16. Fixed slide rail; 17. Screw; 18. Stepper motor; 19. Stepper motor switch; 20. T-shaped slider; 21. T-shaped slide groove; 22. Fixed rod; 23. Sliding rod; 24. Pressure relief hole; 25. First slide rod; 26. Second slide rod; 27. Third spring; 28. One-way valve; 29. ​​Guardrail; 30. Support plate; 31. First rack; 32. Gear; 33. Second rack; 35. Connecting block. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the directions or positional relationships indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0034] like Figure 1-Figure 5 As shown, the present invention is a levelable railway electrification construction ladder car, including a car base 1, a rail grabber 2 arranged under the car base 1 and an operating platform 3 arranged above the car base 1. A guardrail 29 is provided on the side of the operating platform 3, and a guardrail door is rotatably installed on one side of the guardrail 29. A ladder is welded and fixed to the side of the ladder car corresponding to the guardrail door. When in use, the rail grabber 2 is installed on the railway rails to achieve the installation of the car base 1. The car base 1 is moved by moving the rail grabber 2 on the rails, and the operating platform 3 is climbed up by the ladder. The guardrail door is closed and the high-altitude operation is achieved by standing on the operating platform 3. The above is the existing technology and will not be elaborated here.

[0035] In the embodiment of the present invention, the operating platform 3 is connected to the vehicle base 1 through a cylinder 4. There are four cylinders 4, and the lower ends of the four cylinders 4 are respectively fixed at the four corners of the vehicle base 1. When not in use, the cylinder 4 is shortened to reduce the height of the ladder car. When in use, the cylinder 4 is extended to increase the height of the ladder car. A groove 5 is embedded in the side of the operating platform 3, and a buffer rod 6 is provided in the groove 5 for horizontal sliding. One end of the buffer rod 6 is connected to the inner end of the groove 5 with a first spring 7, and the other end of the buffer rod 6 is fixed with a buffer plate 8. A pressure relief pipe 9 is connected between the groove 5 and the cylinder barrel of the cylinder 4. When the ladder car tilts to one side and is about to overturn, the air in the cylinder barrel of the cylinder 4 is discharged into the groove 5 through the pressure relief pipe 9. The air in the cylinder 4 is discharged into the groove 5 through the pressure relief pipe 9, pushing the buffer rod 6 toward the outside of the operating platform 3. When the ladder car tilts to the ground, the buffer plate 8 contacts the ground and compresses the first spring 7, thereby playing a buffering role. A foam plate or a rubber plate may be fixed to the surface of the buffer plate 8 to improve the buffering effect when the buffer plate 8 collides with the ground.

[0036] Specifically, a pressure relief control mechanism 10 is provided at the bottom of the operating platform 3, and the pressure relief control mechanism 10 includes a horizontal slide rail 11 fixed to the bottom of the operating platform 3, a trigger slide block 12 is slidably provided in the horizontal slide rail 11, and the trigger slide block 12 is connected to the inner side of the horizontal slide rail 11 by a second spring 13, and a pneumatic switch 14 is fixed to the outer side of the horizontal slide rail 11, and the pneumatic switch 14 is installed on the pressure relief pipe 9. As the name suggests, the horizontal slide rail 11 is kept horizontal with the ground under normal circumstances. When the ladder car has a tendency to tip over, the horizontal slide rail 11 will also tilt accordingly. Under the action of force, the trigger sliding block 12 slides in the horizontal slide rail 11 and stretches the second spring 13. When the ladder car tilts to a certain degree, the trigger sliding block 12 squeezes the pneumatic switch 14. After the pneumatic switch 14 is pressed, the exhaust valve of the cylinder 4 is opened. Under the pressure of the operating platform 3, the air in the cylinder barrel of the cylinder 4 is quickly discharged through the pressure relief pipe 9 and enters the groove 5, so that the buffer plate 8 extends from the side of the operating platform 3 to play a protective role. In addition, because the air in the cylinder 4 is discharged, the cylinder 4 is automatically shortened, which lowers the center of gravity of the ladder car, improves the stability of the ladder car, and minimizes the risk of operators working at heights.

[0037] Furthermore, a counterweight base 15 is provided on the surface of the vehicle base 1 for horizontal sliding, and a driving mechanism for driving the counterweight base 15 to slide is provided on the vehicle base 1, and the driving mechanism includes a fixed slide rail 16 fixed to the vehicle base 1. In this embodiment, there are two fixed slide rails 16, and the counterweight base 15 is slidably connected to the fixed slide rail 16. The fixed slide rail 16 is rotatably provided with a screw rod 17, and the screw rod 17 is threadedly connected to the counterweight base 15. A stepper motor 18 is fixed to one end of the fixed slide rail 16, and the output shaft of the stepper motor 18 is connected to one end of the screw rod 17. The two ends are fixedly connected, and when the output shaft of the stepper motor 18 rotates, the screw 17 is driven to rotate. When the screw 17 rotates, the counterweight base 15 is driven to slide, thereby adjusting the center of gravity of the vehicle base 1, so that the vehicle base 1 is restored from tilt to balance under the adjustment action of the counterweight base 15, which has a simple function of adjusting balance. Specifically, a stepper motor switch 19 is installed on the outer side of the horizontal slide rail 11, and the stepper motor switch 19 is electrically connected to the stepper motor 18. When the ladder car tilts to a certain extent, the sliding block 12 is triggered to slide and contact the stepper motor switch 19, so that the circuit of the stepper motor 18 is connected and works.

[0038] In fact, the air compressor connected to the cylinder 4 and the power supply connected to the stepper motor 18 can be installed on the counterweight base 15, and the weight can reach hundreds of pounds. When the ladder truck tilts to a certain degree, the sliding of the counterweight base 15 can play a good role in adjusting the balance.

[0039] Furthermore, the upper end of the cylinder 4 is slidably installed with the bottom of the operating platform 3, and a T-shaped slider 20 is fixed to the upper end of the cylinder. The bottom of the operating platform 3 is embedded with a T-shaped slot 21. The T-shaped slider 20 is slidably connected to the T-shaped slot 21, so that the operating platform 3 can move horizontally on the top of the cylinder 4. A retractable connecting member is fixed between the operating platform 3 and the counterweight base 15. Under normal circumstances, the position of the counterweight base 15 is fixed, so the position of the retractable connecting member is fixed, that is, the operating platform 3 is fixed at the top position of the cylinder 4. The retractable connecting member includes a fixed rod 22 fixed to the operating platform 3 at one end, and the fixed rod 22 is slidably covered with a sliding rod 23. The lower end of the sliding rod 23 is fixedly connected to the counterweight base 15. When the cylinder 4 is extended and drives the operating platform 3 to rise and fall, the retractable connecting member extends and retracts along with the cylinder 4. When the ladder car tilts toward one side, the counterweight base 15 slides toward the other side of the tilting under the action of the driving mechanism. When the counterweight base 15 slides toward the other side, it drives the operating platform 3 to move together through the retractable connecting member, so that the operating platform 3 slides on the top of the cylinder 4, so that when the ladder car falls to the ground, the operating platform 3 can be as far away from the ground as possible to prevent it from hitting hard objects on the ground. Correspondingly, when the ladder car tilts and the cylinder 4 is shortened, as the operating platform 3 is lowered, the sliding rod 23 is driven to slide downward, so that the retractable connecting member is automatically shortened.

[0040] Specifically, there are two grooves 5, which are symmetrically arranged on both sides of the operating platform 3, and a pressure relief hole 24 is provided at the bottom of the groove 5. The buffer plate 8 is symmetrically installed on both sides of the operating platform 3 through the two grooves 5. The exhaust ports of multiple cylinders 4 are connected to the same pressure relief pipe 9, and the pressure relief pipe 9 is provided with two branch pipes 91, which are respectively connected to the two grooves 5. Each branch pipe 91 is provided with a pneumatic switch 14. When the ladder car tilts, the pneumatic switch 14 on the branch pipe 91 on the corresponding side is opened, so that the air in the cylinder barrels of multiple cylinders 4 enters the pressure relief pipe 9 together, and enters the groove 5 on the corresponding side through the branch pipe 91 of the pressure relief pipe 9, pushing the buffer rod 6 on this side to extend outward, causing the buffer plate 8 to hit the ground, compressing the air in the groove 5 on the side where the operating platform 3 hits the ground, and causing the air in the groove 5 to be discharged outward through the pressure relief hole 24. When the air in the groove 5 is compressed, heat energy is generated, and energy conversion is performed, thereby playing a buffering role.

[0041] Specifically, the buffer rod 6 includes a first slide rod 25 slidably connected to the groove 5 at one end and a second slide rod 26 slidably connected to the first slide rod 25. A third spring 27 is connected between the second slide rod 26 and the first slide rod 25. The buffer plate 8 is fixedly connected to the second slide rod 26. The air in the cylinder 4 enters the groove 5, pushing the buffer rod 6 to move outward, so that the buffer plate 8 extends from one side of the operating platform 3. When the ladder car falls to the ground, the buffer plate 8 directly collides with the ground, and the third spring 27 contracts to provide buffering.

[0042] Specifically, a one-way valve 28 is connected between the pneumatic switch 14 and the groove, so that the air in the cylinder 4 can enter the groove 5 in a one-way manner.

[0043] It is worth mentioning that a support plate 30 is provided in the vehicle base 1 in the opposite sliding direction of the counterweight base 15, and a first rack 31 is fixed to the support plate 30. A gear 32 is provided for rotation in the vehicle base 1, and a second rack 33 is fixed to the counterweight base 15. The second rack 33 is meshed and connected with the upper side of the gear 32, and the first rack 31 is meshed and connected with the lower side of the gear 32. When the ladder car tilts toward one side, the counterweight base 15 slides toward the other side under the drive mechanism, and when the counterweight base 15 slides, it drives the second rack 33 to slide, and when the second rack 33 slides, it drives the gear 32 to rotate. When the gear 32 rotates, it drives the first rack 31 to slide, and when the first rack 31 slides, it drives the support plate 30 to slide, thereby supporting the tilted side of the ladder car, thereby further preventing the ladder car from tipping over.

[0044] Specifically, a slide groove with openings at both ends is embedded in the vehicle base 1, and the support plate 30 is slidably installed in the slide groove, and the length of the support plate 30 is consistent with the length of the slide groove. A connecting block 35 is fixed to the lower end of the counterweight base 15, and the connecting block 35 is slidably connected to the fixed slide rail 16 and threadedly connected to the screw 17. The lower end of the connecting block 35 passes through the slide groove and is fixedly connected to the second rack 33. During operation, the screw 17 rotates to drive the connecting block 35 to slide. When the connecting block 35 slides, it drives the counterweight base 15 to slide, and when the connecting block 35 slides, it drives the second rack 33 to slide. The levelable railway electrification construction ladder car of the present invention adopts the above-mentioned structure. When it tilts to a certain degree, the sliding block 12 is triggered to slide in the horizontal slide rail and squeeze the pneumatic switch 14. After the pneumatic switch 14 is pressed, under the pressure of the operating platform 3, the air in the cylinder barrel of the cylinder 4 is quickly discharged through the pressure relief pipe 9 and enters the groove 5, so that the buffer plate 8 extends from the side of the operating platform 3 to play a protective role. Moreover, due to the discharge of air in the cylinder 4, the cylinder 4 is automatically shortened, which lowers the center of gravity of the ladder car and improves the stability of the ladder car. Moreover, because the cylinder 4 is shortened, the height of the operating platform 3 is reduced, which minimizes the risk of operators working at high places.

[0045] When the ladder car of the present invention tilts seriously, the sliding block 12 is triggered to slide in the horizontal slide rail and squeeze the stepper motor switch 19, so that the circuit of the stepper motor 18 is connected and works. When the output shaft of the stepper motor 18 rotates, it drives the screw 17 to rotate. When the screw 17 rotates, it drives the counterweight base 15 to slide toward the side away from the tilting of the ladder car, thereby increasing the weight of the ladder car away from the tilting side. By adjusting the center of gravity, the balance of the ladder car is adjusted, thereby improving the stability of the ladder car. A retractable connecting member is fixed between the operating platform 3 of the present invention and the counterweight base 15. When the ladder car tilts toward one side, the counterweight base 15 slides toward the other side of the tilting under the action of the driving mechanism. When the counterweight base 15 slides toward the other side, it is connected to the retractable connecting member. The components drive the operating platform 3 to move together, so that the operating platform 3 is away from the side where the ladder car is about to collide with the ground, so that when the ladder car falls to the ground, the operating platform 3 can be as far away from the ground as possible to prevent it from hitting hard objects on the ground, thereby reducing personal injury; a support plate 30 is slidingly provided in the car base 1 of the ladder car of the present invention. When the ladder car tilts toward one side, the counterweight base 15 will be driven to move in the opposite direction under the action of the driving mechanism. When the counterweight base 15 moves, the gear 32 is driven to rotate through the second rack 33. The rotation of the gear 32 drives the first rack 31 to slide. The sliding of the first rack 31 drives the support plate 30 to extend toward the tilted side of the ladder car, thereby supporting the tilted side of the ladder car, and further preventing the ladder car from tipping over to the ground.

[0046] The levelable railway electrification construction ladder car of the present invention can automatically lower its center of gravity when the ladder car is tilted and about to overturn. While lowering the center of gravity, the operating platform and the side surfaces of the vehicle base can automatically extend buffer plates and support plates, which support the vehicle base to prevent it from overturning, and cushion the impact that is about to be received by the support plates. In addition, when the levelable railway electrification construction ladder car of the present invention is seriously tilted, the counterweight base equipped with an air compressor can automatically slide and adjust the center of gravity of the bottom of the ladder car, which has a good ability to adjust and balance the ladder car, thereby greatly improving the safety of the ladder car.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0048] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A levelable railway electrification construction ladder vehicle, comprising a vehicle base (1), a rail grabber (2) arranged below the vehicle base (1), and an operating platform (3) arranged above the vehicle base, characterized in that: The operating platform (3) and the vehicle base (1) are connected via a cylinder (4); a groove (5) is embedded in the side of the operating platform (3); a buffer rod (6) is slidably provided in the groove (5); one end of the buffer rod (6) is connected to the inner end of the groove (5) by a first spring (7); the other end of the buffer rod (6) is fixed with a buffer plate (8); a pressure relief pipe (9) is connected between the groove (5) and the cylinder barrel of the cylinder (4); A pressure relief control mechanism (10) is provided at the bottom of the operating platform (3), and the pressure relief control mechanism (10) includes a horizontal slide rail (11) fixed at the bottom of the operating platform (3), a trigger sliding block (12) is provided in the horizontal slide rail (11), and the trigger sliding block (12) is connected to the inner side of the horizontal slide rail (11) by a second spring (13), and a pneumatic switch (14) is fixed on the outer side of the horizontal slide rail (11), and the pneumatic switch (14) is installed on the pressure relief pipe (9); A counterweight base (15) is slidably provided on the surface of the vehicle base (1), and a driving mechanism for driving the counterweight base (15) to slide is provided on the vehicle base (1). The upper end of the cylinder (4) is slidably mounted on the bottom of the operating platform (3), and a retractable connecting member (16) is fixed between the operating platform (3) and the counterweight base (15).

2. The levelable railway electrification construction ladder vehicle according to claim 1, characterized in that: There are two grooves (5), which are symmetrically arranged on both sides of the operating platform (3), and a pressure relief hole (24) is provided through the bottom of the groove (5).

3. The levelable railway electrification construction ladder vehicle according to claim 1, characterized in that: The buffer rod (6) comprises a first slide rod (25) having one end slidably connected to the groove (5) and a second slide rod (26) slidably connected to the first slide rod (25); a third spring (27) is connected between the second slide rod (26) and the first slide rod (25); and the buffer plate (8) is fixedly connected to the second slide rod (26).

4. The levelable railway electrification construction ladder vehicle according to claim 2, characterized in that: The driving mechanism comprises a fixed slide rail (16) fixed on the vehicle base (1), the counterweight base (15) is slidably connected to the fixed slide rail (16), the fixed slide rail (16) is rotatably provided with a screw rod (17), the screw rod (17) is threadedly connected to the counterweight base (15), a stepper motor (18) is fixed to one end of the fixed slide rail (16), the output shaft of the stepper motor (18) is fixedly connected to one end of the screw rod (17), a stepper motor switch (19) is installed on the outer side of the horizontal slide rail (11), and the stepper motor switch (19) is electrically connected to the stepper motor (18).

5. The levelable railway electrification construction ladder vehicle according to claim 1, characterized in that: A one-way valve (28) is connected between the pneumatic switch (14) and the groove (5).

6. The levelable railway electrification construction ladder vehicle according to claim 1, characterized in that: The telescopic connecting member (16) includes a fixed rod (22) with one end fixed to the operating platform (3), the fixed rod (22) is slidably sleeved with a sliding rod (23), and the lower end of the sliding rod (23) is fixedly connected to the counterweight base (15).

7. The levelable railway electrification construction ladder vehicle according to claim 6, characterized in that: A T-shaped slider (20) is fixed to the upper end of the cylinder (4), a T-shaped slide groove (21) is embedded in the bottom of the operating platform (3), and the T-shaped slider (20) is slidably connected to the T-shaped slide groove (21).

8. The levelable railway electrification construction ladder vehicle according to claim 1, characterized in that: A guardrail (29) is provided on the side of the operating platform (3), and a guardrail door is rotatably installed on one side of the guardrail (29).

9. The levelable railway electrification construction ladder vehicle according to claim 4, characterized in that: A support plate (30) is provided in the vehicle base (1) in a sliding direction opposite to that of the counterweight base (15); a first rack (31) is fixed to the support plate (30); a gear (32) is rotatably provided in the vehicle base (1); a second rack (33) is fixed to the counterweight base (15); the second rack (33) is meshedly connected to the upper side of the gear (32); and the first rack (31) is meshedly connected to the lower side of the gear (32).

10. The levelable railway electrification construction ladder vehicle according to claim 9, characterized in that: A slide groove with two ends opened is embedded in the vehicle base (1), and the support plate (30) is slidably installed in the slide groove. A connecting block (35) is fixed to the lower end of the counterweight base (15), and the connecting block (35) is fixedly connected to the second rack (33). The connecting block (35) is slidably connected to the fixed slide rail (16) and is threadedly connected to the screw (17), and the lower end of the connecting block (35) passes through the slide groove.

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