Tunnel power pea gravel vehicle

Abstract

The utility model provides a tunnel power pea gravel vehicle which comprises at least one walking device, the walking device comprises a bogie, a first wheel pair, a second wheel pair and a driving mechanism, the first wheel pair and the second wheel pair are rotationally connected with the bogie, and the first wheel pair and the second wheel pair are arranged on a track of a tunnel in a rolling mode; the driving mechanism is arranged on the bogie, the driving mechanism is in transmission connection with the first wheel pair, and the driving mechanism is used for driving the first wheel pair to rotate; the frame is arranged on the bogie; the pea gravel tank is arranged on the frame, and the pea gravel tank is used for loading pea gravels. According to the tunnel power pea gravel vehicle, self-driving walking of the pea gravel vehicle is utilized, extra power can be provided when marshalling transportation power of electric locomotives is insufficient, and therefore the problems of slipping and the like are reduced.

Description

Technical Field

[0001] This disclosure relates to the field of gravel truck technology, and more particularly to a tunnel-powered gravel truck. Background Technology

[0002] During the tunneling process of TBM (Tunnel Boring Machine), gravel is often used as a filling material to fill the annular gap between the tunnel segments and the surrounding rock in order to improve the stability and safety of the tunnel. Among these processes, the transportation of gravel is one of the key aspects.

[0003] Existing typical gravel transfer devices mainly rely on height differences to transport gravel. However, due to terrain conditions, tunnels are often too long or have gentle slopes, which greatly reduces the transport efficiency and reliability of the gravel transfer device, seriously affecting tunneling efficiency. Mechanical transport devices mainly rely on electric locomotives to transport gravel. However, under full load conditions, the electric locomotives may slip due to increased resistance and insufficient power when traveling from inside the tunnel to outside. Summary of the Invention

[0004] This disclosure aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this disclosure is to provide a tunnel-powered gravel truck.

[0006] To achieve the above objectives, this disclosure provides a tunnel-powered gravel truck, comprising: at least one traveling device, the traveling device including: a bogie, a first wheel pair, a second wheel pair, and a drive mechanism, the first wheel pair and the second wheel pair being rotatably connected to the bogie, and the first wheel pair and the second wheel pair being rollably disposed on the track of the tunnel, the drive mechanism being disposed on the bogie, and the drive mechanism being throttlely connected to the first wheel pair, the drive mechanism being used to drive the first wheel pair to rotate; a frame, the frame being disposed on the bogie; and a gravel tank, the gravel tank being disposed on the frame, and the gravel tank being used to load gravel.

[0007] Optionally, the drive mechanism includes: a drive motor, which is vertically mounted on the bogie with its power output end located below; and a speed reducer, which is mounted on the bogie with its power input end connected to the power output end of the drive motor and its power output end connected to the first wheelset drive.

[0008] Optionally, the drive mechanism further includes a protective cover, which is disposed on the bogie, and the drive motor is located inside the protective cover.

[0009] Optionally, the bogie includes: a side frame, the first wheelset and the second wheelset being rotatably connected to the side frame respectively, and the drive mechanism being disposed on the side frame; a bolster, the bolster being slidably disposed vertically on the side frame, and the frame being disposed on the bolster; and at least one buffer assembly, the buffer assembly being disposed between the bolster and the side frame, and the buffer assembly being used to buffer the impact force between the frame and the bolster.

[0010] Optionally, the bogie further includes a core disk, which is disposed on the bolster and is rotatably connected to the frame.

[0011] Optionally, the walking device further includes: a first braking mechanism, which is disposed on the side frame and the braking end of the first braking mechanism is disposed opposite to the first wheel pair, and the first braking mechanism is used to brake the first wheel pair; and a second braking mechanism, which is disposed on the side frame and the braking end of the second braking mechanism is disposed opposite to the second wheel pair, and the second braking mechanism is used to brake the second wheel pair.

[0012] Optionally, the cushioning assembly includes: a first spring disposed between the bolster and the side frame; and a second spring disposed between the bolster and the side frame, with the second spring sleeved outside the first spring.

[0013] Optionally, the at least one walking device includes: a first walking device located at one end of the frame; and a second walking device located at the end of the frame away from the first walking device.

[0014] Optionally, the two ends of the frame are respectively provided with a first slot and a second slot facing upwards; the two ends of the pebbles container are respectively provided with a first seat and a second seat; wherein, the first seat is engaged in the first slot, and the second seat is engaged in the second slot.

[0015] Optionally, the gravel car further includes a coupler assembly, which is disposed at the bottom of the car frame and is used to attach sleepers of the track in the tunnel.

[0016] The technical solution provided in this disclosure may include the following beneficial effects:

[0017] By using gravel trucks, mechanical transportation of gravel can be achieved, thus avoiding the problem of difficulty in transporting gravel due to excessively long tunnel distances or gentle tunnel slopes. At the same time, the self-propelled movement of the gravel trucks can provide additional power when the power of the locomotive train is insufficient, thereby reducing slippage and other problems, and thus improving the efficiency and safety of tunnel construction.

[0018] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of a tunnel-powered gravel truck according to an embodiment of this disclosure;

[0021] Figure 2 This is a schematic diagram of the walking device in a tunnel-powered gravel truck according to an embodiment of the present disclosure;

[0022] As shown in the figure: 100, first walking device; 200, second walking device;

[0023] 11. Bogie; 111. Side frame; 112. Bolt; 113. Core plate; 114. Second spring;

[0024] 12. First wheel pair; 13. Second wheel pair; 14. Drive motor; 15. Reducer; 16. Protective cover; 17. First braking mechanism; 18. Second braking mechanism.

[0025] 2. Frame, 21. First slot, 22. Second slot;

[0026] 3. Pebble pot; 31. First cassette; 32. Second cassette;

[0027] 4. Coupler assembly. Detailed Implementation

[0028] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0029] like Figure 1 and Figure 2 As shown in the present disclosure, an embodiment of a tunnel-powered gravel truck is provided, comprising: at least one traveling device, a frame 2, and a gravel tank 3. The traveling device includes: a bogie 11, a first wheel pair 12, a second wheel pair 13, and a drive mechanism. The first wheel pair 12 and the second wheel pair 13 are rotatably connected to the bogie 11, and the first wheel pair 12 and the second wheel pair 13 are respectively rolled on the tunnel track. The drive mechanism is mounted on the bogie 11 and is drively connected to the first wheel pair 12. The drive mechanism is used to drive the first wheel pair 12 to rotate. The frame 2 is mounted on the bogie 11, and the gravel tank 3 is mounted on the frame 2 and is used to load gravel.

[0030] Understandably, since the gravel tank 3 is mounted on the frame 2, and the frame 2 is mounted on the bogie 11, the gravel tank 3 can be stably mounted on the bogie 11 with the support of the frame 2. Furthermore, since the first wheel pair 12 and the second wheel pair 13 are rotatably connected to the bogie 11, and the first wheel pair 12 and the second wheel pair 13 are rolled on the tunnel track, the bogie 11 and the gravel tank 3 on it can move on the tunnel track using the first wheel pair 12 and the second wheel pair 13. At the same time, since the drive mechanism is mounted on the bogie 11 and is connected to the first wheel pair 12, the drive mechanism can drive the first wheel pair 12 to rotate, thereby realizing the self-driving movement of the gravel truck.

[0031] Therefore, by using gravel trucks for loading, mechanical transportation of gravel can be achieved, thus avoiding the problem of difficulty in transporting gravel due to excessively long tunnel distances or gentle tunnel slopes. At the same time, the self-driving nature of the gravel trucks can provide additional power when the power of the locomotive train is insufficient, thereby reducing slippage and other problems, and thus improving the efficiency and safety of tunnel construction.

[0032] It should be noted that existing typical gravel transfer devices include gravel loading boxes, discharge hoppers, connecting parts, guide pipes, and various supports. These devices can transfer and transport gravel from the tunnel shaft to the tunnel shaft. The gravel is mainly stored in the loading boxes, and the guide pipes transport the gravel to the designated location inside the tunnel. This design mainly relies on the height difference to ensure the continuous supply of gravel. Mechanical transportation methods include the cooperation of loaders and cranes. The crane lifts the gravel tank 3 to the ground, the loader loads the gravel into the gravel tank 3, and then the gravel tank 3 is lifted down into the shaft. The gravel is then transported to the designated construction location by electric locomotives.

[0033] The gravel truck in this embodiment utilizes its own loading and transportation capacity to achieve mechanical transport of gravel, thereby avoiding the disadvantages of gravel transfer methods. At the same time, it can also provide additional power, thus possessing the advantages of mechanical transport methods while reducing slippage and other problems, thereby effectively improving the efficiency and safety of tunnel construction.

[0034] The walking device is used for the self-driving movement of the gravel cart. The number of walking devices can be one, two, etc.

[0035] Among them, the bogie 11 is used for support and steering of the frame 2, and mainly plays the roles of guidance, shock absorption, braking, and axle load distribution. With the configuration of the bogie 11, the independent transportation operation of the gravel car can be realized. The specific type of bogie 11 can be set according to actual needs, and there are no restrictions on it.

[0036] The first wheel pair 12 serves as the power wheelset, which is used to rotate under the drive of the drive mechanism, thereby providing additional traveling power, braking power, etc. for the entire train set. The specific type of the first wheel pair 12 can be set according to actual needs and is not limited thereto. For example, the first wheel pair 12 includes: a first wheel axle and two first wheels. The first wheel axle is rotatably mounted on the bogie 11, and the two first wheels are located at both ends of the first wheel axle.

[0037] The second wheel pair 13 is an unpowered wheelset that is passively rotated under the drive of the first wheel pair 12, thereby providing stable travel support for the bogie 11. The specific type of the second wheel pair 13 can be set according to actual needs and is not limited thereto. For example, the second wheel pair 13 includes: a second wheel axle and two second wheels. The second wheel axle is rotatably mounted on the bogie 11, and the two second wheels are located at both ends of the second wheel axle.

[0038] The drive mechanism is used to drive the first wheel pair 12 to rotate, so as to realize the self-driving movement of the pebble cart. For example, if the drive mechanism drives the first wheel pair 12 to rotate in the forward direction, the pebble cart can provide additional walking power; if the drive mechanism drives the first wheel pair 12 to rotate in the reverse direction, the pebble cart can provide additional braking power. The specific type of drive mechanism can be set according to actual needs and there is no restriction on it.

[0039] The frame 2 is used to stably support the gravel tank 3 on the bogie 11, mainly playing the roles of support and force transmission. The specific type of the frame 2 can be set according to actual needs and is not limited thereto. For example, the frame 2 may include: a steel frame as the main support structure, a cover plate covering the steel frame, and a connecting seat for connecting other vehicles in the train set.

[0040] The pea gravel tank 3 is used to load pea gravel. The specific type of pea gravel tank 3 can be set according to actual needs and there is no restriction. For example, the pea gravel tank 3 is a tank structure with the opening facing upward. Lifting lugs and other structures can be set at both ends of the pea gravel tank 3 to cooperate with cranes and other equipment for lifting.

[0041] like Figure 2 As shown, in some embodiments, the drive mechanism includes a drive motor 14 and a reducer 15. The drive motor 14 is vertically mounted on the bogie 11, and the power output end of the drive motor 14 is located below. The reducer 15 is mounted on the bogie 11, and the power input end of the reducer 15 is connected to the power output end of the drive motor 14. The power output end of the reducer 15 is connected to the first wheelset 12 for transmission.

[0042] It is understandable that, since the power input end of the reducer 15 is connected to the power output end of the drive motor 14, and the power output end of the reducer 15 is connected to the first wheelset 12, the reducer 15 can convert the power output by the drive motor 14 to drive the first wheelset 12 to rotate, thereby realizing the self-driving movement of the gravel cart.

[0043] Furthermore, since the drive motor 14 is vertically mounted on the bogie 11 and the power output end of the drive motor 14 is located at the bottom, the main body of the drive motor 14 can be in a higher position, which is conducive to the safe rotation, maintenance and repair of the drive motor 14 and improves the overall water wading performance of the gravel truck, avoiding the risk of water entering the drive motor 14 when the gravel truck is in a V-shaped slope with water accumulation in the tunnel.

[0044] At the same time, compared with internal combustion engines, using a drive motor 14 to drive the gravel truck can effectively reduce noise and air pollution in the tunnel.

[0045] It should be noted that the drive motor 14 is used to provide driving force for the self-driving of the gravel cart. The specific type of drive motor 14 can be set according to actual needs and is not limited thereto. In particular, due to the vertical arrangement of the drive motor 14, a clearance opening is provided at the corresponding position of the frame 2, through which the drive motor 14 passes.

[0046] The reducer 15 is used for power conversion between the drive motor 14 and the first wheelset 12. The specific type of reducer 15 can be set according to actual needs and there are no restrictions on it.

[0047] like Figure 1 As shown, in some embodiments, the drive mechanism further includes a protective cover 16, which is disposed on the bogie 11, and the drive motor 14 is located inside the protective cover 16.

[0048] It is understandable that since the protective cover 16 is installed on the bogie 11 and the drive motor 14 is located inside the protective cover 16, the protective cover 16 can effectively protect the drive motor 14, thereby ensuring the stable operation of the drive motor 14.

[0049] It should be noted that the protective cover 16 is used to protect the drive motor 14. The protective cover 16 can reduce the environmental impact on the drive motor 14 and prevent the drive motor 14 from being directly impacted. The specific type of the protective cover 16 can be set according to actual needs and there is no limitation. For example, the protective cover 16 can be a cover structure and the protective cover 16 has an inspection door.

[0050] like Figure 2 As shown, in some embodiments, the bogie 11 includes: a side frame 111, a bolster 112, and at least one buffer assembly. The first wheelset 12 and the second wheelset 13 are rotatably connected to the side frame 111, and the drive mechanism is disposed on the side frame 111. The bolster 112 is slidably disposed on the side frame 111 in a vertical direction, and the frame 2 is disposed on the bolster 112. The buffer assembly is disposed between the bolster 112 and the side frame 111, and the buffer assembly is used to buffer the impact force between the frame 2 and the bolster 112.

[0051] It is understandable that, since the first wheel pair 12 and the second wheel pair 13 are rotatably connected to the side frame 111 respectively, and the drive mechanism is set on the side frame 111, the side frame 111 can achieve self-drive by utilizing the cooperation of the drive mechanism and the first wheel pair 12 and the second wheel pair 13. Furthermore, since the bolster 112 is slidably set on the side frame 111 along the vertical direction, and the frame 2 is set on the bolster 112, the frame 2 and the gravel tank 3 on it can achieve self-movement by utilizing the side frame 111, thereby satisfying the mechanical transportation of gravel.

[0052] Meanwhile, since the buffer assembly is located between the bolster 112 and the side frame 111, the impact force can be buffered between the frame 2 and the bolster 112, thereby reducing the vibration impact on the gravel tank 3 and ensuring the stable and safe transportation of the gravel.

[0053] It should be noted that the side frame 111 serves as the main support structure of the bogie 11, and is used to support components such as the drive mechanism and the bolster 112. The specific type of the side frame 111 can be set according to actual needs and there are no restrictions on it. The axles of the first wheelset 12 and the second wheelset 13 are respectively rotatably mounted at both ends of the side frame 111 through bearing seats. The drive motor 14 and the reducer 15 are respectively mounted on the side frame 111 by bolts.

[0054] The bolster 112 is used to support the frame 2. The specific type of the bolster 112 can be set according to actual needs and there is no restriction. For example, the bolster 112 is a beam-plate structure, and the two ends of the bolster 112 are slidably mounted on the side frame 111 by guide columns. The frame 2 is located in the middle of the bolster 112.

[0055] The buffer assembly is used to buffer the impact force between the frame 2 and the bolster 112. The specific type of the buffer assembly can be set according to actual needs and there are no restrictions on it.

[0056] like Figure 2 As shown, in some embodiments, the bogie 11 further includes a core disk 113, which is disposed on the bolster 112 and the frame 2 and the core disk 113 are rotatably connected.

[0057] Understandably, since the core disk 113 is mounted on the bolster 112 and the frame 2 is rotatably connected to the core disk 113, the frame 2 can be stably mounted on the bolster 112 using the core disk 113. Furthermore, the core disk 113 can be used to rotate on the bolster 112, thereby achieving the steering function and ensuring the stable transport of the gravel car.

[0058] It should be noted that the core plate 113 is used for the support and rotation of the frame 2. The specific type of the core plate 113 can be set according to actual needs and there is no limitation. For example, the core plate 113 has a vertical pin, and the frame 2 is sleeved on the pin vertically.

[0059] like Figure 2 As shown, in some embodiments, the walking device further includes: a first braking mechanism 17 and a second braking mechanism 18. The first braking mechanism 17 is disposed on the side frame 111, and the braking end of the first braking mechanism 17 is disposed opposite to the first wheel pair 12. The first braking mechanism 17 is used to brake the first wheel pair 12. The second braking mechanism 18 is disposed on the side frame 111, and the braking end of the second braking mechanism 18 is disposed opposite to the second wheel pair 13. The second braking mechanism 18 is used to brake the second wheel pair 13.

[0060] Understandably, since the first braking mechanism 17 is mounted on the side frame 111 and the braking end of the first braking mechanism 17 is positioned opposite to the first wheelset 12, the first braking mechanism 17 can brake the first wheelset 12, thereby meeting the braking requirements of the gravel truck; since the second braking mechanism 18 is mounted on the side frame 111 and the braking end of the second braking mechanism 18 is positioned opposite to the second wheelset 13, the second braking mechanism 18 can brake the second wheelset 13, thereby meeting the braking requirements of the gravel truck.

[0061] It should be noted that both the first braking mechanism 17 and the second braking mechanism 18 are used for braking the gravel truck. The specific types of the first braking mechanism 17 and the second braking mechanism 18 can be set according to actual needs and are not limited thereto. For example, the first braking mechanism 17 and the second braking mechanism 18 have the same structure. Taking the first braking mechanism 17 as an example, the first braking mechanism 17 includes a brake cylinder and a brake plate. The brake plate is rotatably set on one side of the first wheel in the first wheel pair 12. The brake cylinder drives the brake plate to rotate so that the brake plate abuts against the outer circumference of the first wheel, thereby realizing the braking of the first wheel pair 12.

[0062] Two of the first braking mechanism 17 and the second braking mechanism 18 can be provided respectively, so as to correspond to the two first wheels of the first wheel pair 12 and the two second wheels of the second wheel pair 13 respectively.

[0063] like Figure 2 As shown, in some embodiments, the cushioning assembly includes: a first spring (not shown) and a second spring 114, the first spring being disposed between the bolster 112 and the side frame 111, the second spring 114 being disposed between the bolster 112 and the side frame 111, and the second spring 114 being sleeved on the outside of the first spring.

[0064] Understandably, because the first spring is positioned between the bolster 112 and the side frame 111, it allows for shock absorption between the frame 2 and the bolster 112. Furthermore, because the second spring 114 is positioned between the bolster 112 and the side frame 111, it also provides shock absorption between the frame 2 and the bolster 112. Thus, the cooperation of the first and second springs 114 reduces the vibration affecting the gravel tank 3, ensuring stable and safe transportation of the gravel.

[0065] It should be noted that both the first spring and the second spring 114 are used to buffer the impact force between the frame 2 and the bolster 112. The specific types of the first spring and the second spring 114 can be set according to actual needs and there is no limitation. For example, both the first spring and the second spring 114 are helical springs and are sleeved on the guide post on which the bolster 112 slides.

[0066] like Figure 1 As shown, in some embodiments, at least one walking device includes: a first walking device 100 and a second walking device 200, the first walking device 100 being located at one end of the frame 2, and the second walking device 200 being located at the end of the frame 2 away from the first walking device 100.

[0067] It is understandable that, since the first traveling device 100 is located at one end of the frame 2 and the second traveling device 200 is located at the end of the frame 2 away from the first traveling device 100, the frame 2 and the gravel tank 3 on the frame 2 can achieve stable self-driving travel by cooperating with the first traveling device 100 and the second traveling device 200. This can provide additional power when the electric locomotive train has insufficient power, thereby reducing slippage and other problems.

[0068] It should be noted that both the first walking device 100 and the second walking device 200 are walking devices, and the first walking device 100 and the second walking device 200 are symmetrically arranged at both ends of the frame 2.

[0069] like Figure 1 As shown, in some embodiments, the two ends of the frame 2 are respectively provided with a first slot 21 and a second slot 22 with the slot opening facing upwards; the two ends of the pebbles container 3 are respectively provided with a first seat 31 and a second seat 32. The first seat 31 is engaged in the first slot 21, and the second seat 32 is engaged in the second slot 22.

[0070] Understandably, since the first mounting bracket 31 at one end of the gravel tank 3 is mounted in the first slot 21 at one end of the frame 2, and the second mounting bracket 32 ​​at the other end of the gravel tank 3 is mounted in the second slot 22 at the other end of the frame 2, the gravel tank 3 can be stably arranged on the frame 2 for transportation, while also facilitating the lifting and unloading of materials by lifting equipment, thus making the use of the gravel truck more flexible and convenient.

[0071] It should be noted that the first slot 21 is used to hold the first card holder 31. The first slot 21 and the first card holder 31 are compatible. The specific types of the first slot 21 and the first card holder 31 can be set according to actual needs and there is no restriction. For example, the frame 2 is provided with two oppositely arranged first seats, and the two first seats are respectively provided with opposite first slots. The two first slots form the first slot 21. The first card holder 31 is a plate structure, and the two ends of the first card holder 31 are respectively engaged in the two first slots.

[0072] The second slot 22 is used to hold the second slot 32. The second slot 22 and the second slot 32 are compatible. The specific types of the second slot 22 and the second slot 32 can be set according to actual needs and are not limited. For example, the frame 2 is provided with two opposing second seats, and the two second seats are respectively provided with opposing second slots. The two second slots form the second slot 22. The second slot 32 is a plate structure, and the two ends of the second slot 32 are respectively held in the two second slots.

[0073] like Figure 1As shown, in some embodiments, the gravel car further includes a coupler assembly 4, which is disposed at the bottom of the frame 2 and is used to attach sleepers of the track in the tunnel.

[0074] Understandably, since the coupler assembly 4 is located at the bottom of the frame 2 and is used to attach the sleepers of the track in the tunnel, the gravel car can use the cooperation between the coupler assembly 4 and the sleepers of the track in the tunnel to achieve the anti-slip function, thereby ensuring the safe and stable transportation of the gravel car in the tunnel.

[0075] It should be noted that the coupler assembly 4 is used to prevent the gravel truck from slipping. The specific type of the coupler assembly 4 can be set according to actual needs and there is no limitation. For example, the coupler assembly 4 can be a hook-shaped rod structure.

[0076] In the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0077] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A tunnel-powered gravel truck, characterized in that, include: At least one traveling device, the traveling device comprising: a bogie, a first wheel pair, a second wheel pair and a drive mechanism, wherein the first wheel pair and the second wheel pair are rotatably connected to the bogie, and the first wheel pair and the second wheel pair are respectively rolled on the track of the tunnel, the drive mechanism is disposed on the bogie, and the drive mechanism is throttlely connected to the first wheel pair, the drive mechanism being used to drive the first wheel pair to rotate; A chassis, which is mounted on the bogie; A pea gravel container, which is mounted on the vehicle frame and is used to load pea gravel; The bogie includes: a side frame, a bolster, and at least one buffer assembly. The first wheelset and the second wheelset are rotatably connected to the side frame, and the drive mechanism is disposed on the side frame. The bolster is slidably disposed vertically on the side frame, and the frame is disposed on the bolster. The buffer assembly is disposed between the bolster and the side frame, and the buffer assembly is used to buffer the impact force between the frame and the bolster. The bogie further includes a core disk, which is disposed on the bolster and is rotatably connected to the frame.

2. The tunnel-powered gravel truck according to claim 1, characterized in that, The drive mechanism includes: A drive motor is vertically mounted on the bogie, with its power output end located below. A speed reducer is mounted on the bogie, and the power input end of the speed reducer is connected to the power output end of the drive motor. The power output end of the speed reducer is also connected to the first wheelset drive.

3. The tunnel-powered gravel truck according to claim 2, characterized in that, The drive mechanism also includes: A protective cover is provided on the bogie, and the drive motor is located inside the protective cover.

4. The tunnel-powered gravel truck according to claim 1, characterized in that, The walking device also includes: A first braking mechanism is mounted on the side frame, and the braking end of the first braking mechanism is disposed opposite to the first wheelset. The first braking mechanism is used to brake the first wheelset. The second braking mechanism is mounted on the side frame, and the braking end of the second braking mechanism is positioned opposite to the second wheelset. The second braking mechanism is used to brake the second wheelset.

5. The tunnel-powered gravel truck according to claim 1, characterized in that, The buffer component includes: A first spring is disposed between the bolster and the side frame; A second spring is disposed between the bolster and the side frame, and the second spring is sleeved on the outside of the first spring.

6. The tunnel-powered gravel truck according to claim 1, characterized in that, The at least one walking device includes: A first walking device is located at one end of the vehicle frame; The second traveling device is located at the end of the vehicle frame away from the first traveling device.

7. The tunnel-powered gravel truck according to claim 1, characterized in that, The two ends of the frame are respectively provided with a first slot and a second slot with the slot opening facing upwards; The two ends of the pea gravel jar are respectively provided with a first retainer and a second retainer; The first card holder is fitted into the first card slot, and the second card holder is fitted into the second card slot.

8. The tunnel-powered gravel truck according to claim 1, characterized in that, The gravel cart also includes: A coupler assembly is disposed at the bottom of the vehicle frame and is used to attach sleepers of the track in the tunnel.

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