Stepping tamping wagon

Abstract

The utility model discloses a stepping tamping wagon which comprises a main wagon frame, a main wagon body and an auxiliary wagon body. The material vehicle frame is connected with the rear end of the main vehicle frame; the two first self-lifting and resetting mechanisms are respectively arranged on the two sides of the front part of the front bogie of the main frame; the two second self-lifting and resetting mechanisms are arranged on the two sides of the rear portion of the first rear bogie of the main frame respectively; the two third self-lifting and resetting mechanisms are arranged on the two sides of the rear portion of the second rear bogie of the material vehicle frame respectively. The stepping type tamping wagon is provided with self-lifting mechanisms and comprises two first self-lifting mechanisms, two second self-lifting mechanisms and two third self-lifting mechanisms, and when the stepping type tamping wagon derails, the two first self-lifting mechanisms, the two second self-lifting mechanisms and / or the two third self-lifting mechanisms are operated, so that the stepping type tamping wagon derails. Direct and efficient lifting of the stepping tamping wagon can be achieved, lifting equipment is prevented from being assembled on site, time and labor are saved, and the lifting efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of track maintenance machinery, and more specifically, to a step-type tamping car. Background Art

[0002] As a track maintenance machinery vehicle, a step-type tamping car is prone to derailment accidents during major maintenance operations on railway lines. In the prior art, when a step-type tamping car derails, an independent recovery device is used to recover the step-type tamping car. That is, independent accessories of the recovery device need to be taken out from the on-site spare parts vehicle and assembled temporarily, and then the assembled recovery device is used to recover the step-type tamping car.

[0003] However, due to the large number of independent accessories of the recovery device, heavy weight, difficult assembly, and time-consuming, the recovery efficiency is low.

[0004] Therefore, how to facilitate the recovery of the step-type tamping car is an urgent problem to be solved by those skilled in the art at present. Summary of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a step-type tamping car, which is convenient for the step-type tamping car to be recovered.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A step-type tamping car, comprising:

[0008] A main frame;

[0009] A material car frame, connected to the rear end of the main frame;

[0010] Two first self-recovery mechanisms, respectively arranged on both sides in front of the front bogie of the main frame;

[0011] Two second self-recovery mechanisms, respectively arranged on both sides behind the first rear bogie of the main frame;

[0012] Two third self-recovery mechanisms, respectively arranged on both sides behind the second rear bogie of the material car frame.

[0013] Optionally, at the positions of the main frame corresponding to the first self-recovery mechanism and the second self-recovery mechanism respectively, and at the position of the material car frame corresponding to the third self-recovery mechanism, there are provided:

[0014] Reinforcing beams, extending along the width direction of the step-type tamping car, and being of a rectangular tubular structure;

[0015] Reinforcing plates, fittingly connected to the outer side surfaces of the outermost channel steels of the main frame or the material car frame.

[0016] Optionally, the reinforcing beam includes:

[0017] A first reinforcing beam disposed in the groove of the outermost channel steel. When the number of the first reinforcing beams is at least two, at least two of the first reinforcing beams are located at the same height and arranged side by side;

[0018] A second reinforcing beam disposed in the groove of the second channel steel adjacent to the outermost channel steel, and the height where the second reinforcing beam is located is higher than the height where the first reinforcing beam is located.

[0019] Optionally, an installation base is provided on the outer side of the reinforcing plate, and the first self-righting mechanism, the second self-righting mechanism and the third self-righting mechanism are respectively installed below the corresponding installation base.

[0020] Optionally, at least one of the first self-righting mechanism, the second self-righting mechanism and the third self-righting mechanism includes:

[0021] An installation bottom plate connected to the main frame or the material truck frame;

[0022] Two parallel guide rail bases installed on the bottom side of the installation bottom plate;

[0023] Two linear guide rails respectively connected to the two guide rail bases correspondingly;

[0024] A transverse movement hydraulic cylinder base installed on the bottom side of the installation bottom plate and located between the two guide rail bases;

[0025] A transverse movement hydraulic cylinder connected to the transverse movement hydraulic cylinder base;

[0026] A slider slidably connected to the linear guide rail and connected to the transverse movement hydraulic cylinder;

[0027] A lifting hydraulic cylinder, which is a two-stage oil cylinder, and is connected to the slider through a lifting hydraulic cylinder base.

[0028] Optionally, the lifting hydraulic cylinder is an oil cylinder with a function of resisting lateral force.

[0029] Optionally, an induction switch is provided on the fixed part of the transverse movement hydraulic cylinder, and the induction switch is used to sense whether the transverse movement hydraulic cylinder is in the starting position, so as to allow the step tamping car to run at high speed when the induction switch senses that the transverse movement hydraulic cylinder is in the starting position.

[0030] Optionally, an electric emergency pump is provided on the main frame, and the electric emergency pump is connected to the whole machine power supply of the step tamping car and is used to provide power for the hydraulic cylinders of the first self-righting mechanism, the second self-righting mechanism and the third self-righting mechanism.

[0031] Optionally, quick-insert sockets are provided at positions on the main frame close to the first self-righting mechanism and the second self-righting mechanism respectively, and at the position on the material truck frame close to the third self-righting mechanism.

[0032] The step tamping car further includes an operation box for controlling the first self-righting mechanism, the second self-righting mechanism or the third self-righting mechanism, and the operation box is connected with a quick-insert plug for plugging into the quick-insert socket.

[0033] Optionally, the electrical components of the first self-righting mechanism, the second self-righting mechanism and the third self-righting mechanism are connected by lines independent of the vehicle electrical network system of the step tamping car.

[0034] The step tamping car provided by the utility model is equipped with self-righting mechanisms on board, including two first self-righting mechanisms, two second self-righting mechanisms and two third self-righting mechanisms. When the step tamping car derails, by operating the two first self-righting mechanisms, the two second self-righting mechanisms and / or the two third self-righting mechanisms, the step tamping car can be directly and efficiently righted, avoiding on-site assembly of righting equipment, saving time and effort, and having a high righting efficiency. Moreover, the two first self-righting mechanisms are respectively located on both sides in front of the front bogie of the main frame. This position avoids the sweeper of the front bogie and the measuring device at the bottom of the main frame, and is relatively close to the front bogie, facilitating righting and saving effort during righting. The two second self-righting mechanisms are respectively arranged on both sides behind the first rear bogie of the main frame, that is, at the tail of the main frame, between the main frame and the material truck frame. This position avoids the measuring device at the rear of the main frame, and after the step tamping car enters a small curve, it will not interfere with the material truck frame, and is relatively close to the first rear bogie, saving effort during righting. The two third self-righting mechanisms are respectively arranged on both sides behind the second rear bogie of the material truck frame. This position avoids the sweeper of the second bogie and the measuring device at the bottom of the material truck frame, and is relatively close to the second bogie, saving effort during righting. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0036] Figure 1 It is a side view of the step tamping car provided by the specific embodiment of the present utility model;

[0037] Figure 2 Partial structural schematic diagram of the main frame corresponding to the first self-righting mechanism;

[0038] Figure 3 Structural schematic diagram of the first self-righting mechanism, the second self-righting mechanism or the third self-righting mechanism.

[0039] Reference numerals:

[0040] 1 - Main frame; 11 - Front bogie; 12 - First rear bogie; 13 - Outermost channel steel; 2 - Material car frame; 21 - Second rear bogie; 31 - First self-righting mechanism; 311 - Installation base plate; 312 - Guide rail base; 313 - Linear guide rail; 314 - Transverse hydraulic cylinder base; 315 - Transverse hydraulic cylinder; 316 - Slide block; 317 - Lifting hydraulic cylinder; 318 - Lifting hydraulic cylinder base; 319 - Inductive switch; 320 - Dust-proof plate; 32 - Second self-righting mechanism; 33 - Third self-righting mechanism; 4 - Reinforcing beam; 5 - Reinforcing plate; 61 - First installation base; 62 - Second installation base; 63 - Third installation base; 7 - Electric emergency pump; 81 - Quick plug socket; 82 - Quick plug; 9 - Operation box. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] The core of the present invention is to provide a step tamping car, which facilitates the righting of the step tamping car.

[0043] Please refer to Figure 1 , an embodiment of the present invention provides a step tamping car, including a main frame 1, a material car frame 2, two first self-righting mechanisms 31, two second self-righting mechanisms 32 and two third self-righting mechanisms 33. The material car frame 2 is connected to the main frame 1. The two first self-righting mechanisms 31 are respectively arranged on the front sides of the front bogie 11 of the main frame 1; the two second self-righting mechanisms 32 are respectively arranged on the rear sides of the first rear bogie 12 of the main frame 1; the two third self-righting mechanisms 33 are respectively arranged on the rear sides of the second rear bogie 21 of the material car frame 2.

[0044] That is to say, the step tamping car provided in this embodiment is equipped with a self-righting mechanism on board, including two first self-righting mechanisms 31, two second self-righting mechanisms 32 and two third self-righting mechanisms 33. When the step tamping car derails and runs off the track, by operating the two first self-righting mechanisms 31, the two second self-righting mechanisms 32 and / or the two third self-righting mechanisms 33, the direct and efficient righting of the step tamping car can be achieved, avoiding the on-site assembly of righting equipment, saving time and effort, and having a high righting efficiency.

[0045] Moreover, the two first self-righting mechanisms 31 are respectively located on the front sides of the front bogie 11 of the main frame 1. This position avoids the sweeper of the front bogie 11 and the bottom measuring device of the main frame 1, and is relatively close to the front bogie 11, facilitating righting and being more labor-saving during righting.

[0046] The two second self-righting mechanisms 32 are respectively arranged on the rear sides of the first rear bogie 12 of the main frame 1, that is, at the tail of the main frame 1, between the main frame 1 and the material car frame 2. This position avoids the rear measuring device of the main frame 1, and after the step tamping car enters a small curve, it will not interfere with the material car frame 2, and is relatively close to the first rear bogie 12, being more labor-saving during righting.

[0047] The two third self-righting mechanisms 33 are respectively arranged on the rear sides of the second rear bogie 21 of the material car frame 2. This position avoids the sweeper of the second bogie and the bottom measuring device of the material car frame 2, and is relatively close to the second bogie, being more labor-saving during righting.

[0048] Further, please refer to Figure 2, in order to enable the main frame 1 and the material vehicle frame 2 to meet the strength requirements during lifting and avoid damaging the structures of the main frame 1 and the material vehicle frame 2, in some embodiments, strengthening beams 4 and strengthening plates 5 are provided at the positions of the main frame 1 corresponding to the first self-lifting mechanism 31 and the second self-lifting mechanism 32 respectively, and at the position of the material vehicle frame 2 corresponding to the third self-lifting mechanism 33. The strengthening beam 4 extends along the width direction of the step tamping car and is of a rectangular tubular structure; the strengthening plate 5 is adhesively connected to the outer side surface of the outermost channel steel 13 of the main frame 1 or the material vehicle frame 2. It should be noted that the strengthening beam 4 at the position of the main frame 1 corresponding to the first self-lifting mechanism 31 and the second self-lifting mechanism 32 extends along the width direction of the main frame 1; the strengthening beam 4 at the position of the material vehicle frame 2 corresponding to the third self-lifting mechanism 33 extends along the width direction of the material vehicle frame 2. The strengthening plates 5 at the positions of the main frame 1 corresponding to the first self-lifting mechanism 31 and the second self-lifting mechanism 32 are respectively located on the outer side surface of the outermost channel steel 13 of the main frame 1, and the strengthening plate 5 at the position of the material vehicle frame 2 corresponding to the third self-lifting mechanism 33 is located on the outer side surface of the outermost channel steel 13 of the material vehicle frame 2. That is to say, in this embodiment, the structures of the main frame 1 and the material vehicle frame 2 of the step tamping car are optimized and strengthened, so that the main frame 1 and the material vehicle frame 2 can meet the strength requirements during lifting and avoid damaging the structures of the main frame 1 and the material vehicle frame 2.

[0049] In some embodiments, the setting positions and setting methods of the strengthening beam 4 and the strengthening plate 5 are determined through finite element calculation and analysis.

[0050] In addition, in this embodiment, the specific connection methods of the strengthening beam 4 and the strengthening plate 5 to the main frame 1 and the material vehicle frame 2 are not limited, as long as the connection between the strengthening beam 4 and the main frame 1 and the material vehicle frame 2 respectively and the connection between the strengthening plate 5 and the main frame 1 and the material vehicle frame 2 respectively can be realized. In some embodiments, the strengthening beam 4 is welded to the main frame 1 and the material vehicle frame 2 respectively; the strengthening plate 5 is welded to the main frame 1 and the material vehicle frame 2 respectively.

[0051] Furthermore, the strengthening beam 4 is of a rectangular tubular structure, which can increase the structural strength, stiffness and stability of the strengthening beam 4 itself, thereby further enhancing the structural strength, stiffness and stability of the main frame 1 and the material vehicle frame 2 to meet the lifting requirements.

[0052] In addition, the specific distribution mode of the strengthening beam 4 in this embodiment is not limited, as long as the strengthening beam 4 can improve the strength and stiffness of the main frame 1 and the material truck frame 2. In some embodiments, the strengthening beam 4 includes a first strengthening beam and a second strengthening beam. The first strengthening beam and the second strengthening beam can each be one, or can each be more than two. The first strengthening beam is arranged in the groove of the outermost channel steel 13 of the main frame 1 or the material truck frame 2. When the number of the first strengthening beams is at least two, at least two first strengthening beams are located at the same height and arranged side by side; the second strengthening beam is arranged in the groove of the second channel steel adjacent to the outermost channel steel 13 of the main frame 1 or the material truck frame 2, and the height where the second strengthening beam is located is higher than the height where the first strengthening beam is located.

[0053] In addition, considering the specific installation positions of the first self-righting mechanism 31, the second self-righting mechanism 32 and the third self-righting mechanism 33, in some embodiments, an installation base is provided on the outer side of the strengthening plate 5, and the first self-righting mechanism 31, the second self-righting mechanism 32 and the third self-righting mechanism 33 are respectively installed below the corresponding installation bases. In some embodiments, the installation bases are respectively welded to the main frame 1 and the material truck frame 2. That is to say, by arranging the installation bases on the outer side of the strengthening plate 5, the width of the installation bases is wider than the width of the main frame 1 and the width of the material truck frame 2. Of course, the width of the installation bases does not intrude into the standard railway clearance, which can prevent interference between other components installed at the bottom of the main frame 1 and the material truck frame 2 and the installation bases, the first self-righting mechanism 31, the second self-righting mechanism 32 and the third self-righting mechanism 33, and greatly increases the transverse movement stroke of the first self-righting mechanism 31, the second self-righting mechanism 32 and the third self-righting mechanism 33, facilitating the realization of one-time self-righting and resetting when the derailment amount of the step tamping car is relatively large.

[0054] For the convenience of description, as Figure 1 shown, a first installation base 61 is provided on the outer side of the strengthening plate 5 of the main frame 1 corresponding to the first self-righting mechanism 31, a second installation base 62 is provided on the outer side of the strengthening plate 5 of the main frame 1 corresponding to the second self-righting mechanism 32, a third installation base 63 is provided on the outer side of the strengthening plate 5 of the material truck frame 2 corresponding to the third self-righting mechanism 33. The first self-righting mechanism 31 is installed on the first installation base 61, the second self-righting mechanism 32 is installed on the second installation base 62, and the third self-righting mechanism 33 is installed on the third installation base 63.

[0055] In addition, the above embodiments do not limit the specific structures of the first self-righting mechanism 31, the second self-righting mechanism 32 and the third self-righting mechanism 33 respectively, as long as the self-righting function can be realized.

[0056] Please refer to Figure 3, in some embodiments, at least one of the first self-righting mechanism 31, the second self-righting mechanism 32, and the third self-righting mechanism 33 includes a mounting base plate 311, a guide rail base 312, a linear guide rail 313, a transverse hydraulic cylinder base 314, a transverse hydraulic cylinder 315, a slider 316, a lifting hydraulic cylinder base 318, and a lifting hydraulic cylinder 317. The mounting base plate 311 is connected to the main frame 1 or the material truck frame 2; the number of the guide rail bases 312 is two, the two guide rail bases 312 are arranged in parallel and are both installed on the bottom side of the mounting base plate 311; the number of the linear guide rails 313 is two, and the two linear guide rails 313 are respectively connected to the two guide rail bases 312 correspondingly; the transverse hydraulic cylinder base 314 is installed on the bottom side of the mounting base plate 311 and is located between the two guide rail bases 312; the transverse hydraulic cylinder 315 is connected to the transverse hydraulic cylinder base 314; the slider 316 is slidably connected to the linear guide rail 313, and the slider 316 is connected to the transverse hydraulic cylinder 315; the lifting hydraulic cylinder 317 is a two-stage cylinder, and the lifting hydraulic cylinder 317 is connected to the slider 316 through the lifting hydraulic cylinder base 318. During operation, by the action of the transverse hydraulic cylinder 315, the slider 316 is driven to perform a linear reciprocating motion on the linear guide rail 313, thereby driving the lifting hydraulic cylinder 317 to achieve a translational linear motion; by the action of the lifting hydraulic cylinder 317, the righting effect is achieved. By the sliding connection between the slider 316 and the linear guide rail 313, the stability of the translational motion of the lifting hydraulic cylinder 317 is improved. In addition, the lifting hydraulic cylinder 317 is a two-stage cylinder, its installation distance is small, the space between the bottom of the lifting hydraulic cylinder 317 and the railway rail surface is ensured, and the stroke of the two-stage cylinder is larger, which can provide a larger jacking stroke. In some embodiments, a dust-proof plate 320 is provided outside the linear guide rail 313.

[0057] Furthermore, in some embodiments, the lifting hydraulic cylinder 317 is a cylinder with the function of resisting lateral force. That is to say, the lifting hydraulic cylinder 317 in this embodiment has the ability to resist lateral force, can withstand a certain lateral force in the high-superelevation section without failure, and can achieve one-time righting in the small-curve high-superelevation section.

[0058] In addition, please continue to refer to Figure 3 , in some embodiments, an induction switch 319 is provided at the fixed part of the transverse hydraulic cylinder 315. The induction switch 319 is used to sense whether the transverse hydraulic cylinder 315 is in the starting position, so as to allow the step tamping machine to run at high speed when the induction switch 319 senses that the transverse hydraulic cylinder 315 is in the starting position. That is to say, in this embodiment, the induction switch 319 is interlocked with the high-speed running of the whole vehicle. When the induction switch 319 senses that the transverse hydraulic cylinder 315 is in the starting position, that is, after the first self-righting mechanism 31, the second self-righting mechanism 32, or the third self-righting mechanism 33 is completely retracted, the step tamping machine is allowed to run at high speed to improve the running safety of the whole vehicle.

[0059] In addition, due to long-term non-use, the hydraulic high-pressure oil pump stations equipped in the existing recovery equipment often malfunction during emergency use. Sometimes it takes 2 - 4 hours to complete the recovery and rescue of the derailed step-type tamping car, seriously affecting the normal opening of the line. To solve this technical problem, as Figure 1 shown, in some embodiments, the main frame 1 is provided with an electric emergency pump 7. The electric emergency pump 7 is connected to the overall machine power supply of the step-type tamping car, and the electric emergency pump 7 is used to provide power for the hydraulic cylinders of the first self-recovery mechanism 31, the second self-recovery mechanism 32, and the third self-recovery mechanism 33. That is to say, in this embodiment, the electric emergency pump 7 for providing power for the hydraulic cylinders of the first self-recovery mechanism 31, the second self-recovery mechanism 32, and the third self-recovery mechanism 33 is installed on the main frame 1, and the electric emergency pump 7 is connected to the overall machine power supply of the step-type tamping car. When it is necessary to use the first self-recovery mechanism 31, the second self-recovery mechanism 32, and the third self-recovery mechanism 33, the overall machine power supply is used to provide power for the electric emergency pump 7, so that it can work in time, which is beneficial to the rapid and efficient recovery and rescue of the derailed step-type tamping car.

[0060] Furthermore, as Figure 1 shown, in some embodiments, quick-connect sockets 81 are provided at the positions of the main frame 1 close to the first self-recovery mechanism 31 and the second self-recovery mechanism 32, and at the position of the material car frame 2 close to the third self-recovery mechanism 33; the step-type tamping car further includes an operation box 9 for controlling the first self-recovery mechanism 31, the second self-recovery mechanism 32, or the third self-recovery mechanism 33. The operation box 9 is connected with a quick-connect plug 82 for plugging into the quick-connect socket 81. That is to say, when it is necessary to use the first self-recovery mechanism 31, the second self-recovery mechanism 32, or the third self-recovery mechanism 33 for recovery, the quick-connect plug 82 connected to the operation box 9 is plugged into the corresponding quick-connect socket 81 of the first self-recovery mechanism 31, the second self-recovery mechanism 32, or the third self-recovery mechanism 33, and the operation box 9 is used to control the first self-recovery mechanism 31, the second self-recovery mechanism 32, or the third self-recovery mechanism 33, which can be controlled outside the range of the vehicle overturning risk, ensuring safety and being convenient for operation. It should be noted that the operation box 9 can control the lateral movement or lifting of two first self-recovery mechanisms 31, two second self-recovery mechanisms 32, or two third self-recovery mechanisms 33 separately or simultaneously. In some embodiments, the operation box 9 is connected to the quick-connect plug 82 through a spiral cable.

[0061] Furthermore, in some embodiments, the electrical components of the first self - reset mechanism 31, the second self - reset mechanism 32, and the third self - reset mechanism 33 are connected by lines independent of the vehicle electrical network system of the step - type tamping car. That is to say, the operations of the first self - reset mechanism 31, the second self - reset mechanism 32, and the third self - reset mechanism 33 are independent of the vehicle electrical network system. Even when the step - type tamping car derails and causes the collapse of the vehicle electrical network system, it does not affect the normal use of the first self - reset mechanism 31, the second self - reset mechanism 32, and the third self - reset mechanism 33.

[0062] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0063] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0064] The above has introduced the step - type tamping car provided by the present utility model in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the present utility model.

Claims

1. A step-type tamping car, characterized in that, Including: Main frame (1); Material truck frame (2), connected to the rear end of the main frame (1); Two first self-righting mechanisms (31), respectively arranged on both sides in front of the front bogie (11) of the main frame (1); Two second self-righting mechanisms (32), respectively arranged on both sides behind the first rear bogie (12) of the main frame (1); Two third self-righting mechanisms (33), respectively arranged on both sides behind the second rear bogie (21) of the material truck frame (2).

2. The step tamping vehicle according to claim 1, wherein, At the positions of the main frame (1) corresponding to the first self-righting mechanism (31) and the second self-righting mechanism (32) respectively, and at the position of the material truck frame (2) corresponding to the third self-righting mechanism (33), there are provided: Reinforcing beam (4), extending along the width direction of the step tamping car, and being a rectangular tubular structure; Reinforcing plate (5), adhesively connected to the outer side of the outermost channel steel (13) of the main frame (1) or the material truck frame (2).

3. The step tamping vehicle according to claim 2, wherein The reinforcing beam (4) includes: First reinforcing beam, arranged in the groove of the outermost channel steel (13). When the number of the first reinforcing beams is at least two, at least two of the first reinforcing beams are at the same height and arranged side by side; Second reinforcing beam, arranged in the groove of the second channel steel adjacent to the outermost channel steel (13), and the height where the second reinforcing beam is located is higher than the height where the first reinforcing beam is located.

4. The step tamping vehicle according to claim 2, wherein, An installation base is provided on the outer side of the reinforcing plate (5), and the first self-righting mechanism (31), the second self-righting mechanism (32) and the third self-righting mechanism (33) are respectively installed below the corresponding installation base.

5. The step tamping vehicle according to any one of claims 1-4, characterized in that, At least one of the first self-righting mechanism (31), the second self-righting mechanism (32) and the third self-righting mechanism (33) includes: Installation bottom plate (311), connected to the main frame (1) or the material truck frame (2); Two parallel guide rail bases (312), installed on the bottom side of the installation bottom plate (311); Two linear guide rails (313), respectively connected to the two guide rail bases (312) correspondingly; Cross-movement hydraulic cylinder base (314), installed on the bottom side of the installation bottom plate (311) and located between the two guide rail bases (312); Cross-movement hydraulic cylinder (315), connected to the cross-movement hydraulic cylinder base (314); Slider (316), slidably connected to the linear guide rail (313) and connected to the cross-movement hydraulic cylinder (315); Lifting hydraulic cylinder (317), being a two-stage oil cylinder, and connected to the slider (316) through a lifting hydraulic cylinder base (318).

6. The step tamping vehicle according to claim 5, wherein The lifting hydraulic cylinder (317) is an oil cylinder with the function of resisting lateral force.

7. The step tamping vehicle according to claim 5, characterized in that, An induction switch (319) is provided at the fixed part of the cross-movement hydraulic cylinder (315). The induction switch (319) is used to sense whether the cross-movement hydraulic cylinder (315) is in the starting position, so as to allow the step tamping car to run at high speed when the induction switch (319) senses that the cross-movement hydraulic cylinder (315) is in the starting position.

8. The step tamping car according to any one of claims 1-4, characterized in that The main frame (1) is provided with an electric emergency pump (7), and the electric emergency pump (7) is connected to the whole machine power supply of the step tamping car, and is used to provide power for the hydraulic cylinders of the first self-righting mechanism (31), the second self-righting mechanism (32) and the third self-righting mechanism (33).

9. The step tamping car according to any one of claims 1-4, characterized in that Quick plug sockets (81) are provided at positions of the main frame (1) close to the first self-righting mechanism (31) and the second self-righting mechanism (32) respectively, and at a position of the material car frame (2) close to the third self-righting mechanism (33). The step tamping car further includes an operation box (9) for controlling the first self-righting mechanism (31), the second self-righting mechanism (32) or the third self-righting mechanism (33), and the operation box (9) is connected with a quick plug (82) for plugging into the quick plug socket (81).

10. The step tamping vehicle according to any one of claims 1-4, characterized in that, The electrical components of the first self-righting mechanism (31), the second self-righting mechanism (32) and the third self-righting mechanism (33) are connected by lines independent of the vehicle electrical network system of the step tamping car.

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