Concrete spraying vehicle

Abstract

The utility model relates to the technical field of concrete construction, and discloses a concrete spraying vehicle, which comprises a vehicle body, a chassis assembly, a traction air compressor and a control panel, the side wall of the vehicle body is electrically connected with the control panel, the control panel is used for controlling the spraying process of concrete, and the chassis assembly is arranged at the bottom of the vehicle body to control the driving direction and speed of the vehicle body. The traction air compressor is arranged on the right side of the vehicle body and used for conveniently compressing air in a mine hole environment, and the manipulator assembly is arranged at the top of the vehicle body and used for controlling the spraying range and angle of concrete. According to the concrete spraying vehicle, the three functions of walking, pumping and spraying are integrated, a chassis engine and motor dual-power system, a linkage four-wheel drive and hydraulic power-assisted hinged steering structure, an arm frame supporting leg seat and other components of the chassis assembly cooperate with one another, so that the concrete spraying vehicle is stable in action, flexible to operate and free of construction blind areas, and therefore the practicability of the concrete spraying vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete construction technical field especially relates to a concrete injection vehicle. BACKGROUND

[0002] In the tunnel, well and other engineering construction, concrete injection operation is the core link of the stability of the engineering structure. With the high-speed development of the construction in the fields of national defense, metallurgy, railway, highway and civil air defense, the construction environment is more and more complex, and higher requirements are put forward for the comprehensive performance of the concrete injection vehicle. The construction scene often faces the challenges of narrow space and complex terrain, and the equipment needs to have flexible mobility, accurate injection control and efficient pumping capacity. A concrete injection vehicle that integrates walking, pumping and injection functions and can adapt to harsh working conditions becomes the key equipment to improve construction efficiency and ensure engineering quality. Therefore, developing a concrete injection vehicle with the characteristics of double-power driving, flexible steering and stable injection has important practical significance for promoting the efficient development of various engineering construction.

[0003] In the technical scheme of the existing concrete injection vehicle, the chassis system adopts a single power driving mode, such as relying only on a fuel engine to provide power and matching a mechanical steering structure to realize vehicle movement. This design has a large turning radius in narrow space, and the mobility is limited. For injection, some equipment adopts a fixed arm support or a simple hydraulic extension structure, and relies on manual operation to adjust the injection direction.

[0004] However, the existing technology has the problem of insufficient mobility of the vehicle in complex construction environment. The single power chassis and mechanical steering structure of the traditional concrete injection vehicle make it difficult to flexibly steer and quickly move in the narrow space of the tunnel, well and other places. The large turning radius causes time-consuming and labor-consuming adjustment of the position when the vehicle deals with narrow curves or complex terrain, which seriously affects the construction efficiency. Therefore, a concrete injection vehicle is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a concrete injection vehicle, which aims at improving the problem of insufficient mobility of the vehicle in complex construction environment, time-consuming and labor-consuming adjustment of the position and serious influence on the construction efficiency in the prior art.

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

[0007] A concrete injection vehicle comprises

[0008] A vehicle body, the side wall of the vehicle body is electrically connected with a control panel, which is used for controlling the injection process of concrete.

[0009] A chassis assembly, which is located at the bottom of the vehicle body, to control the vehicle's direction of travel and speed;

[0010] A traction air compressor is located on the right side of the vehicle body to facilitate the compression of air in the mine environment;

[0011] A robotic arm assembly, mounted on the top of the vehicle body, is used to control the spraying range and angle of concrete;

[0012] A hydraulic system assembly, located inside the vehicle body, provides the power required during concrete spraying.

[0013] As a further description of the above technical solution:

[0014] The chassis assembly includes a boom outrigger mount, a rear frame weldment, a front frame weldment, a driver's cab, a chassis power unit, a fuel tank, a battery, a water tank, a cleaning water pump, a quick-setting agent tank, an air cooler, a pumping device, a cable reel, and a lubrication pump. The boom outrigger mount is located at the bottom of the vehicle body. One side of the rear frame weldment is fixedly connected to the rear side wall of the vehicle body, and one side of the front frame weldment is fixedly connected to the front side wall of the vehicle body. The driver's cab is located inside the vehicle body, the chassis power unit is located at the bottom of the vehicle body, the outer wall of the fuel tank is fixedly connected to the inside of the vehicle body, and the outer wall of the battery is fixedly connected to the inside of the vehicle body.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the water tank is fixedly connected to the inside of the vehicle body, the outer wall of the cleaning water pump is fixedly connected to the inside of the vehicle body, the top of the quick-setting agent tank is fixedly connected to the bottom of the vehicle body, the air cooler is located inside the vehicle body, the pumping device is located at the bottom of the vehicle body, the cable reel is rotatably connected to one side of the vehicle body, and the top of the lubrication pump is fixedly connected to the bottom of the vehicle body.

[0017] As a further description of the above technical solution:

[0018] The traction air compressor includes an air compressor body, an air compressor trailer, an air compressor traction frame, front wheels, and rear wheels. The air compressor body is located on the right side of the vehicle body. The air compressor trailer is rotatably connected to the bottom of the air compressor body. The top of the air compressor traction frame is fixedly connected to the bottom of the air compressor body. The front wheels and rear wheels are arranged in a rectangular array and are rotatably connected to the bottom of the air compressor body.

[0019] As a further description of the above technical solution:

[0020] The robotic arm assembly includes a nozzle structure assembly, a swing cylinder seat, a boom guard, a boom body, a telescopic cylinder, a turntable structure, a boom pipeline one, a pitch cylinder, a 240-degree rotation cylinder, a brush motor, a nozzle, and a boom pipeline two. The nozzle structure assembly is located on the top of the vehicle body, the boom body is located on the top of the vehicle body, one side of the swing cylinder seat is fixedly connected to one side of the boom body, the boom guard is located on the outer wall of the boom body, the telescopic cylinder is rotatably connected inside the boom body, and the turntable structure is rotatably connected to the output end of the telescopic cylinder.

[0021] As a further description of the above technical solution:

[0022] The boom pipe is installed inside the vehicle body. The pitch cylinder is rotatably connected to the top of the vehicle body. One side of the turntable structure is rotatably connected to the output end of the pitch cylinder. The 240-degree rotation cylinder is installed on the top of the vehicle body. One side of the brush motor is fixedly connected to one side of the turntable structure. The output end of the brush motor is connected to the turntable structure. The nozzle is installed inside the nozzle structure assembly. The boom pipe is installed inside the vehicle body.

[0023] As a further description of the above technical solution:

[0024] The hydraulic system assembly includes a motor pump unit, a hydraulic oil tank assembly, a pumping hydraulic oil pipe, an accumulator, an auxiliary hydraulic oil pipe, a chassis pump unit pipeline, and a boom pipeline. The motor pump unit is fixedly connected to one side of the vehicle body, and the hydraulic oil tank assembly is fixedly connected to one side of the vehicle body. The pumping hydraulic oil pipe passes through the interior of the vehicle body, and one end of the pumping hydraulic oil pipe is connected to the output end of the hydraulic oil tank assembly. The accumulator is located on the other side of the vehicle body. The auxiliary hydraulic oil pipe, the chassis pump unit pipeline, and the boom pipeline all pass through the interior of the vehicle body.

[0025] This utility model has the following beneficial effects:

[0026] This utility model integrates three major functions: walking, pumping, and spraying. The chassis assembly features a dual power system of chassis engine and electric motor, a four-wheel drive system, a hydraulically assisted articulated steering structure, and components such as the boom and outriggers that work together to ensure stable operation, flexible handling, and no blind spots. This solves the problem of insufficient mobility and time-consuming and laborious position adjustments in complex construction environments, which seriously affects construction efficiency, thereby improving the practicality of the concrete spraying truck. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of a concrete spraying truck proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the chassis assembly structure of a concrete spraying truck proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of the air compressor body structure of a concrete spraying truck proposed in this utility model;

[0030] Figure 4 This is a schematic diagram of the robotic arm assembly structure of a concrete spraying truck proposed in this utility model;

[0031] Figure 5 This is a schematic diagram of the hydraulic system assembly structure of a concrete spraying truck proposed in this utility model;

[0032] Figure 6 This is a schematic diagram of the pumping hydraulic oil pipe structure of a concrete spraying truck proposed in this utility model.

[0033] Legend:

[0034] 1. Chassis assembly; 2. Control panel; 3. Traction air compressor; 4. Robotic arm assembly; 5. Hydraulic system assembly; 6. Vehicle body; 11. Boom outrigger mounts; 12. Rear frame welded parts; 13. Front frame welded parts; 14. Driver's cab; 15. Chassis power unit; 16. Fuel tank; 17. Battery; 18. Water tank; 19. Cleaning water pump; 20. Accelerator tank; 111. Air cooler; 112. Pumping device; 113. Cable reel; 114. Lubrication pump; 31. Air compressor body; 32. Air compressor trailer; 33. Air compressor traction... 34. Front wheel; 35. Rear wheel; 41. Nozzle assembly; 42. Swing cylinder seat; 43. Boom guard; 44. Boom body; 45. Telescopic cylinder; 46. Turntable structure; 47. Boom pipeline one; 48. Pitch cylinder; 49. 240-degree rotation cylinder; 410. Brush motor; 411. Nozzle; 412. Boom pipeline two; 51. Motor pump unit; 52. Hydraulic oil tank assembly; 53. Pumping hydraulic oil pipe; 54. Accumulator; 55. Auxiliary hydraulic oil pipe; 56. Chassis pump unit pipeline; 57. Boom pipeline three. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Reference Figures 1-6 One embodiment of this utility model provides: a concrete spraying truck, comprising:

[0037] The vehicle body 6 is the main body of the concrete spraying truck, carrying all other important components. A control panel 2 is electrically connected to the side wall of the vehicle body 6 for controlling the concrete spraying process. The chassis assembly 1 is located at the bottom of the vehicle body 6 to control its direction and speed. A traction air compressor 3 is located on the right side of the vehicle body 6 to compress air for the mining environment. A robotic arm assembly 4 is located on the top of the vehicle body 6 to control the range and angle of concrete spraying. A hydraulic system assembly 5 is located inside the vehicle body 6 and provides the power required during concrete spraying.

[0038] The chassis assembly 1 includes a boom outrigger seat 11, a rear frame weldment 12, a front frame weldment 13, a driver's cab 14, a chassis power unit 15, a fuel tank 16, a battery 17, a water tank 18, a cleaning water pump 19, a quick-setting agent tank 20, an air cooler 111, a pumping device 112, a cable reel 113, and a lubrication pump 114. The boom outrigger seat 11 is located at the bottom of the vehicle body 6, providing additional support for the chassis and ensuring the stability of the concrete spraying truck during operation. One side of the rear frame weldment 12 is fixedly connected to the rear side wall of the vehicle body 6, and one side of the front frame weldment 13 is fixedly connected to the front side wall of the vehicle body 6, serving to fix and enhance the structural strength. The driver's cab 14 is located inside the vehicle body 6, and the chassis power unit 15 is located at the bottom of the vehicle body 6, providing driving power for the concrete spraying truck. The outer wall of the fuel tank 16 is fixedly connected to the inside of the vehicle body 6, and the outer wall of the battery 17 is fixedly connected to the inside of the vehicle body 6.

[0039] The outer wall of the water tank 18 is fixedly connected to the inside of the vehicle body 6 for storing cleaning water. The outer wall of the cleaning water pump 19 is fixedly connected to the inside of the vehicle body 6. The top of the quick-setting agent tank 20 is fixedly connected to the bottom of the vehicle body 6 to accelerate the setting process of concrete and ensure that the sprayed concrete can be quickly fixed. The air cooler 111 is located inside the vehicle body 6. The pumping device 112 is located at the bottom of the vehicle body 6 and is used to pump concrete to the nozzle 411 structure to ensure a continuous supply of concrete. The cable reel 113 is rotatably connected to one side of the vehicle body 6. The top of the lubrication pump 114 is fixedly connected to the bottom of the vehicle body 6.

[0040] The towing air compressor 3 includes an air compressor body 31, an air compressor trailer 32, an air compressor towing frame 33, front wheels 34, and rear wheels 35. The air compressor body 31 is located on the right side of the vehicle body 6 and is used for the air pressure requirements during concrete spraying. The air compressor trailer 32 is rotatably connected to the bottom of the air compressor body 31. The top of the air compressor towing frame 33 is fixedly connected to the bottom of the air compressor body 31. The front wheels 34 and the rear wheels 35 are arranged in a rectangular array and are rotatably connected to the bottom of the air compressor body 31.

[0041] The robotic arm assembly 4 includes a nozzle structure assembly 41, a swing cylinder seat 42, a boom guard 43, a boom body 44, a telescopic cylinder 45, a turntable structure 46, a boom pipeline 47, a pitch cylinder 48, a 240-degree rotation cylinder 49, a brush motor 410, a nozzle 411, and a boom pipeline 412. The nozzle structure assembly 41 is located on the top of the vehicle body 6 and is responsible for spraying concrete material onto the target area. The boom body 44 is located on the top of the vehicle body 6 and supports and protects the spraying device. One side of the swing cylinder seat 42 is fixedly connected to one side of the boom body 44. The boom guard 43 is located on the outer wall of the boom body 44. The telescopic cylinder 45 is rotatably connected inside the boom body 44, allowing the robotic arm to adjust its length in different working environments and providing a larger working range. The turntable structure 46 is rotatably connected to the output end of the telescopic cylinder 45.

[0042] Boom pipe 47 runs through the interior of vehicle body 6. Pitch cylinder 48 is rotatably connected to the top of vehicle body 6. Turntable structure 46 is rotatably connected to the output end of pitch cylinder 48 on one side. 240-degree rotation cylinder 49 is located on the top of vehicle body 6. Brush motor 410 is fixedly connected to one side of turntable structure 46 on one side. The output end of brush motor 410 is connected to turntable structure 46. Nozzle 411 is located inside nozzle structure assembly 41. Boom pipe 412 runs through the interior of vehicle body 6 and is used to transmit hydraulic oil to support the movement of the robotic arm and the operation of the nozzle.

[0043] The hydraulic system assembly 5 includes a motor pump unit 51, a hydraulic oil tank assembly 52, a pumping hydraulic oil pipe 53, an accumulator 54, an auxiliary hydraulic oil pipe 55, a chassis pump unit pipe 56, and a boom pipe 57. The motor pump unit 51 is fixedly connected to one side of the vehicle body 6 to provide a power source for the hydraulic system. The hydraulic oil tank assembly 52 is fixedly connected to one side of the vehicle body 6 to store hydraulic oil. The pumping hydraulic oil pipe 53 passes through the inside of the vehicle body 6, and one end of the pumping hydraulic oil pipe 53 is connected to the output end of the hydraulic oil tank assembly 52. ​​The accumulator 54 is located on the other side of the vehicle body 6. The auxiliary hydraulic oil pipe 55, the chassis pump unit pipe 56, and the boom pipe 57 all pass through the inside of the vehicle body 6.

[0044] Specifically, when using this concrete spraying truck, it is essential to first ensure a thorough understanding of its chassis assembly. The concrete spraying truck chassis assembly 1 employs an advanced dual-power system, which combines a chassis engine and an electric motor. This allows the vehicle to flexibly adapt to different construction environments. The chassis engine provides powerful support, while the electric motor ensures a low-noise, low-pollution operating environment, suitable for long-term continuous work in complex mine tunnels, narrow or steep terrain. Through a four-wheel drive system, the hydraulically assisted articulated steering structure of the boom outriggers 11, the front frame welded parts 13, and the rear... The cooperation of components such as the frame welded parts 12 enables the vehicle to have a small turning radius, allowing for more flexible maneuvering in confined spaces. The driver's cab 14 prioritizes operational comfort and safety, providing ample space for easy operator control. The vehicle is also equipped with a fuel tank 16 and a battery 17 to ensure a continuous power supply, guaranteeing efficient operation during continuous work. The air compressor body 31 of the traction air compressor 3 compresses the air in the mine, ensuring a stable supply of power for injection. The air compressor trailer 32 provides fixation and support, ensuring the air compressor... The stability of the body 31 during movement is ensured by the design of the front wheels 34 and rear wheels 35, which allow the vehicle to maintain stable movement even on uneven terrain. The robotic arm assembly 4 of the concrete spraying truck, through the cooperation of the turntable structure 46 and hydraulic components such as the pitch cylinder 48 and telescopic cylinder 45, can drive the extension and retraction of the fully hydraulic telescopic robotic arm. The robotic arm is flexibly designed and can be adjusted at various angles and positions to ensure that every part of the target area can be covered during spraying operations. The brush motor 410 is responsible for driving the cleaning of the nozzle and maintaining the spraying effect, while the 240-degree rotating cylinder 49 is responsible for the cleaning of the nozzle. The control of the nozzle 411 within the structural assembly 41 allows for flexible control of the concrete spraying range and direction through angle adjustment, ensuring construction quality. The hydraulic system assembly 5 plays a core role in the hydraulic drive of the entire vehicle. The cooperation between the motor pump unit 51 and the hydraulic oil tank assembly 52, through the pumping hydraulic oil pipe 53 and the auxiliary hydraulic oil pipe 55, delivers hydraulic oil to various hydraulic devices, providing strong power support for the pumping device 112 and the spraying action. The long-stroke, large-diameter conveying cylinder, in conjunction with the pumping device 112, ensures efficient concrete delivery, greatly improving work efficiency and construction quality.

[0045] Working Principle: When using this concrete spraying truck, the chassis assembly 1 first adopts a dual power system of chassis engine and electric motor. Through the cooperation of four-wheel drive and hydraulically assisted articulated steering structure, boom outriggers 11, front frame welded parts 13, rear frame welded parts 12, and other components, it achieves flexible movement with a small turning radius. The driver's cab 14 provides operating space, and the fuel tank 16 and battery 17 ensure a continuous power supply, ensuring the vehicle has strong mobility in complex construction environments. The air compressor body 31 of the traction air compressor 3 compresses the mine air, and the air compressor trailer 32, front wheels 34, and rear wheels 35 move to provide compressed air support for spraying. The robotic arm assembly 4, through the turntable structure 46 and the cooperation of the pitch cylinder 48 and telescopic cylinder 45, drives the fully hydraulic telescopic robotic arm, brushing motors 410 and 240. The rotary cylinder 49 controls the nozzle 411 within the nozzle structure assembly 41, flexibly adjusting the spray range and angle. Boom pipe 1 47 and boom pipe 2 412 ensure stable transmission of concrete materials. Simultaneously, the air compressor body 31 of the traction air compressor 3 compresses mine air to provide air source support for spraying. Its air compressor trailer 32, front wheels 34, and rear wheels 35 ensure convenient movement. In the hydraulic system assembly 5, the motor pump unit 51 and the hydraulic oil tank assembly 52 provide power to the pumping device 112 and spraying action through the pumping hydraulic oil pipe 53 and auxiliary hydraulic oil pipe 55. The long-stroke, large-diameter conveying cylinder works in conjunction with the pumping device 112 to achieve efficient concrete pumping.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concrete spraying truck, characterized in that: include The vehicle body (6) has a control panel (2) electrically connected to its side wall for controlling the concrete spraying process; Chassis assembly (1), which is located at the bottom of the vehicle body (6) to control the driving direction and speed of the vehicle body (6); Traction air compressor (3), the traction air compressor (3) is located on the right side of the vehicle body (6) to facilitate the compression of air in the mine environment; The robotic arm assembly (4) is located on the top of the vehicle body (6) and is used to control the spraying range and angle of concrete. A hydraulic system assembly (5) is disposed inside the vehicle body (6) and provides the power required during concrete spraying. The chassis assembly (1) includes a boom outrigger mount (11), a rear frame weldment (12), a front frame weldment (13), a driver's cab (14), a chassis power unit (15), a fuel tank (16), a battery (17), a water tank (18), a cleaning water pump (19), a quick-setting agent tank (20), an air cooler (111), a pumping device (112), a cable reel (113), and a lubrication pump (114). The boom outrigger mount (11) is equipped with... At the bottom of the vehicle body (6), one side of the rear frame weldment (12) is fixedly connected to the rear side wall of the vehicle body (6), one side of the front frame weldment (13) is fixedly connected to the front side wall of the vehicle body (6), the driver's cab (14) is located inside the vehicle body (6), the chassis power unit (15) is located at the bottom of the vehicle body (6), the outer wall of the fuel tank (16) is fixedly connected to the inside of the vehicle body (6), and the outer wall of the battery (17) is fixedly connected to the inside of the vehicle body (6).

2. A concrete spraying truck according to claim 1, characterized in that: The outer wall of the water tank (18) is fixedly connected to the inside of the vehicle body (6), the outer wall of the cleaning water pump (19) is fixedly connected to the inside of the vehicle body (6), the top of the quick-setting agent tank (20) is fixedly connected to the bottom of the vehicle body (6), the air cooler (111) is located inside the vehicle body (6), the pumping device (112) is located at the bottom of the vehicle body (6), the cable reel (113) is rotatably connected to one side of the vehicle body (6), and the top of the lubrication pump (114) is fixedly connected to the bottom of the vehicle body (6).

3. A concrete spraying truck according to claim 1, characterized in that: The traction air compressor (3) includes an air compressor body (31), an air compressor trailer (32), an air compressor traction frame (33), a front wheel (34), and a rear wheel (35). The air compressor body (31) is located on the right side of the vehicle body (6). The air compressor trailer (32) is rotatably connected to the bottom of the air compressor body (31). The top of the air compressor traction frame (33) is fixedly connected to the bottom of the air compressor body (31). The front wheel (34) and the rear wheel (35) are arranged in a rectangular array and are rotatably connected to the bottom of the air compressor body (31).

4. A concrete spraying truck according to claim 1, characterized in that: The robotic arm assembly (4) includes a nozzle structure assembly (41), a swing cylinder seat (42), a boom guard (43), a boom body (44), a telescopic cylinder (45), a turntable structure (46), a boom pipeline one (47), a pitch cylinder (48), a 240-degree rotation cylinder (49), a brush motor (410), a nozzle (411), and a boom pipeline two (412). The nozzle structure assembly (41) is located on the top of the vehicle body (6), the boom body (44) is located on the top of the vehicle body (6), one side of the swing cylinder seat (42) is fixedly connected to one side of the boom body (44), the boom guard (43) is located on the outer wall of the boom body (44), the telescopic cylinder (45) is rotatably connected to the inside of the boom body (44), and the turntable structure (46) is rotatably connected to the output end of the telescopic cylinder (45).

5. A concrete spraying truck according to claim 4, characterized in that: The boom pipe (47) is installed inside the vehicle body (6). The pitch cylinder (48) is rotatably connected to the top of the vehicle body (6). One side of the turntable structure (46) is rotatably connected to the output end of the pitch cylinder (48). The 240-degree rotary cylinder (49) is installed on the top of the vehicle body (6). One side of the brush motor (410) is fixedly connected to one side of the turntable structure (46). The output end of the brush motor (410) is connected to the turntable structure (46). The nozzle (411) is installed inside the nozzle structure assembly (41). The boom pipe (412) is installed inside the vehicle body (6).

6. A concrete spraying truck according to claim 1, characterized in that: The hydraulic system assembly (5) includes a motor pump set (51), a hydraulic oil tank assembly (52), a pumping hydraulic oil pipe (53), an accumulator (54), an auxiliary hydraulic oil pipe (55), a chassis pump set pipeline (56), and a boom pipeline three (57). The motor pump set (51) is fixedly connected to one side of the vehicle body (6), and the hydraulic oil tank assembly (52) is fixedly connected to one side of the vehicle body (6). The pumping hydraulic oil pipe (53) passes through the inside of the vehicle body (6), and one end of the pumping hydraulic oil pipe (53) is connected to the output end of the hydraulic oil tank assembly (52). The accumulator (54) is located on the other side of the vehicle body (6). The auxiliary hydraulic oil pipe (55), the chassis pump set pipeline (56), and the boom pipeline three (57) all pass through the inside of the vehicle body (6).

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