Front vehicle assembly and mining concrete wet spraying machine

Abstract

The utility model discloses a front vehicle assembly and a mining concrete wet spraying machine, the front vehicle assembly comprises a front vehicle frame, an arm support system, a power system and an accelerator box, the first end of the front vehicle frame is provided with a front vehicle hinge frame which is used for being hinged with a rear vehicle assembly; the boom system is arranged at the top of the second end of the front frame, and the power system is arranged at the top of the front frame and located behind the boom system; the number of the accelerator boxes is two, and the two accelerator boxes are located on the two sides of the power system respectively. The wet spraying machine is applied to the field of mining machinery, the front vehicle assembly adopts the two split accelerator boxes to store the accelerator, the size of a single accelerator box can be effectively reduced and the filling height of the accelerator can be reduced on the premise that the storage amount of the accelerator is not changed or even increased, and the wet spraying machine is convenient to assemble and disassemble due to the layout design. The problems that traditional equipment is large in transportation size and poor in mine environment adaptability are solved.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery technology, specifically a front-end assembly and a wet concrete spraying machine for mining. Background Technology

[0002] In mine roadway support construction, wet shotcrete machines are indispensable equipment. However, traditional wet shotcrete machines are large in size, making vertical transportation via mine cages difficult, resulting in challenges in lowering and raising the equipment underground, increasing construction costs and time. Furthermore, after being transported to the mine, the large size of traditional wet shotcrete machines hinders vehicle movement and reduces construction efficiency. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model provides a front vehicle assembly and a wet concrete spraying machine for mining, which not only enables the wet spraying machine to adapt to the size limitations of mine cages, but also ensures that the wet spraying machine has strong passability in narrow mine shafts and can be quickly disassembled for vehicle maintenance.

[0004] To achieve the above objectives, this utility model provides a front assembly for a mining concrete wet spraying machine, including a front frame, a boom system, a power system and a quick-setting agent tank. The first end of the front frame is provided with a front articulation frame for hinged connection with the rear assembly.

[0005] The boom system is located on top of the second end of the front frame, and the power system is located on top of the front frame and behind the boom system.

[0006] There are two accelerator tanks, which are located on opposite sides of the power system.

[0007] In one embodiment, the front assembly also includes a front wheel system, which includes two front wheels and two front fenders;

[0008] The two front wheels are respectively mounted on both sides of the front frame, and the two front mudguards are respectively fixedly connected to both sides of the front frame and cover the front wheels on the corresponding sides;

[0009] The two quick-setting agent tanks are respectively installed on the front mudguards on the corresponding sides.

[0010] In one embodiment, the front vehicle assembly further includes a front vehicle cover disposed on the front vehicle frame and covering the powertrain;

[0011] The front vehicle cover is provided with a first support assembly for supporting the boom system.

[0012] To achieve the above objectives, this utility model also provides a wet concrete spraying machine for mining, including a rear vehicle assembly and the aforementioned front vehicle assembly, wherein the rear vehicle assembly includes two detachable rear vehicle frames;

[0013] The first end of the rear frame is provided with a rear articulation frame, which is hinged to the front articulation frame.

[0014] In one embodiment, the rear vehicle assembly further includes a cab, a hydraulic oil tank, an air compressor, a motor pump unit, a cable reel, an electrical control cabinet, a pumping mechanism, pumping pipelines, a hydraulic radiator, and a water tank.

[0015] The driver's cab is located on the top of the first end and the first side of the rear frame, and the hydraulic oil tank is located on the top of the first end and the second side of the rear frame;

[0016] The air compressor is located on top of the rear frame and behind the cab and the hydraulic oil tank. The motor pump unit is connected to the second side of the rear frame via a support and is located below the hydraulic oil tank and the air compressor.

[0017] The cable reel is located on the first side of the rear frame and near the second end of the rear frame, and the electrical control cabinet is located on the second side of the rear frame and near the second end of the rear frame;

[0018] The pumping mechanism is located at the second end of the rear frame, and one end of the pumping pipeline is connected to the pumping mechanism, while the other end is connected to the boom system.

[0019] The hydraulic radiator is installed at the bottom of the cab, and the water tank is installed on the rear frame and adjacent to the hydraulic radiator.

[0020] In one embodiment, the air compressor includes an air compressor body, a heavy-duty air filter, and a fan;

[0021] The air compressor body is located on top of the rear frame and behind the cab and the hydraulic oil tank. The head and tail of the air compressor body face the two sides of the rear frame, respectively. The motor pump unit is located below the hydraulic oil tank and the head of the air compressor body.

[0022] The fan is located on the first side of the rear frame and behind the air compressor body, and the cable reel is located behind the fan;

[0023] The heavy-duty air filter is located behind the air compressor body and between the fan and the electrical control cabinet.

[0024] In one embodiment, the rear vehicle assembly further includes a rear wheel system, which includes two rear wheels and two rear fenders;

[0025] The two rear wheels are respectively installed on both sides of the rear frame, and the two rear mudguards are respectively fixedly connected to both sides of the rear frame and cover the rear wheels on the corresponding sides;

[0026] The electrical control cabinet and the fan are respectively located on the rear mudguard on the corresponding side.

[0027] In one embodiment, a maintenance space accessible to maintenance personnel is provided between the cable reel, the fan, the heavy-duty air filter, the electrical control cabinet, and the pumping mechanism.

[0028] The cable reel is rotatably connected to the rear frame via a hinged rotating shaft for controlling the opening and closing of the maintenance space.

[0029] In one embodiment, the rear vehicle assembly further includes a rear vehicle cover, which is disposed on the rear vehicle frame and covers the air compressor and the electrical control cabinet.

[0030] In one embodiment, the pumping line includes a rigid pipe assembly and a flexible hose assembly;

[0031] The first end of the rigid tube assembly is connected to the pumping mechanism, and the second end of the rigid tube assembly passes above the rear vehicle cover and above the hydraulic oil tank and is located in front of the hydraulic oil tank. The rear vehicle cover and / or the hydraulic oil tank are provided with a second support assembly that can support the rigid tube assembly.

[0032] The first end of the hose assembly is detachably connected to the second end of the rigid tube assembly, and the second end of the hose assembly is connected to the boom system.

[0033] Compared with the prior art, the present invention has the following beneficial technical effects:

[0034] 1. The front assembly of this utility model uses two separate quick-setting agent tanks to store quick-setting agent, which can effectively reduce the volume of a single quick-setting agent tank and reduce the filling height of quick-setting agent without changing or even increasing the storage amount of quick-setting agent;

[0035] 2. In the preferred embodiment of the front vehicle assembly of this utility model, two quick-setting agent tanks can be directly installed on two front mudguards, making full use of the installation space on the front vehicle frame. That is, increasing the number of quick-setting agent tanks makes the front vehicle assembly have a smaller width, so that it can adapt to the size restrictions of the mine cage and the passage in narrow mines.

[0036] 3. The mine concrete wet spraying machine of this utility model solves the problems of large transport volume and poor adaptability to the mine environment of traditional equipment through the separate design of the front and rear frames, the centralized arrangement of core functional components, the shortening and straightening of pumping pipelines, and the optimization of the heat dissipation system. Its modular structure is suitable for transportation in narrow roadways and has the advantages of high efficiency, stability and easy maintenance. It improves the operating efficiency, operation convenience and maintenance convenience of the equipment and can be effectively applied to concrete spraying operations in mine roadway support construction. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 This is a first isometric view of the wet spraying machine for mining concrete in this embodiment of the present invention;

[0039] Figure 2 This is a second isometric view of the wet spraying machine for mining concrete in this embodiment of the present invention;

[0040] Figure 3 This is an axle-view drawing of the front vehicle assembly in an embodiment of this utility model;

[0041] Figure 4 This is an axonometric view of the rear vehicle assembly in an embodiment of this utility model.

[0042] Reference numerals: 1. Front frame; 101. Front articulated frame; 2. Boom system; 3. Power system; 4. Quick-setting agent tank; 5. Hoses pump; 6. Front wheel system; 7. Front vehicle cover; 8. First support assembly; 9. Rear frame; 901. Rear articulated frame; 10. Cab; 11. Hydraulic oil tank; 12. Air compressor; 1201. Air compressor body; 1202. Heavy-duty air filter; 1203. Fan; 13. Motor pump unit; 14. Cable reel; 15. Electrical control cabinet; 16. Pumping mechanism; 17. Pumping pipeline; 18. Hydraulic radiator; 19. Water tank; 20. Rear vehicle cover; 21. Rear wheel system; 22. Second support assembly.

[0043] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] 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.

[0045] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0046] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0049] Example 1

[0050] like Figure 1 , Figure 2 The diagram shows a front assembly (hereinafter referred to as "front assembly") for a wet concrete spraying machine in mining, which mainly includes a front frame 1, a boom system 2, a power system 3, a quick-setting agent tank 4, and a hose pump 5.

[0051] The front frame 1 is a welded steel structure. Multiple ear plates are vertically welded along the side plate at its first end to serve as the front articulation frame 101, which is used to connect with the rear assembly via a pin. The boom system 2 is mounted on the central axis at the top of the second end of the front frame 1 via a slewing bearing, meaning that the boom system 2 can achieve 360° rotation via the slewing bearing.

[0052] The power system 3 is located on top of the front frame 1 and behind the boom system 2, and is mainly used to control the movement of the wet spraying machine and the raising and lowering of the outriggers. Specifically, the power system 3 includes an engine, an air filter, and an aftertreatment device. The engine is fixed to the top of the front frame 1 by a mounting bracket, which has shock-absorbing pads for vibration damping. The air filter and aftertreatment device are mounted nearby on the engine cover for quick maintenance.

[0053] There are two accelerator tanks 4, which are located on both sides of the power system 3. In this embodiment, two separate accelerator tanks 4 are used to store the accelerator. Under the premise that the storage amount of accelerator remains unchanged or even increases, the volume of a single accelerator tank 4 can be effectively reduced, and the filling height of the accelerator can be reduced.

[0054] In practical implementation, the front vehicle assembly also includes a front wheel system 6, which comprises two front wheels and two front mudguards. The two front wheels are respectively mounted on both sides of the front frame 1 via a reducer, and the two front mudguards are respectively fixed to both sides of the front frame 1 with bolts or other fasteners and cover the corresponding front wheels. Preferably, the two quick-setting agent tanks 4 are respectively fixed to the corresponding front mudguards with straps, thereby making full use of the installation space on the front frame 1. That is, increasing the number of quick-setting agent tanks 4 makes the front vehicle assembly have a smaller width, enabling it to adapt to the size restrictions of mine cages and passage in narrow mines.

[0055] The hose pump 5 is located on the side of the power system 3 and is fixed to the front mudguard on the left or right side by bolts or other fasteners. That is, the hose pump 5 is installed close to the quick-setting agent tank 4, and the hose pump 5 is connected to the quick-setting agent tank 4 and the boom system 2 through pipelines. It is used to deliver quick-setting agent to the nozzle on the boom system 2, and spray it onto the support surface together with the concrete spraying to achieve the effect of rapid setting.

[0056] refer to Figure 3 The front vehicle assembly also includes a front vehicle cover 7, which is fixedly connected to the front vehicle frame 1 by bolts or other fasteners. The front vehicle cover 7 covers the power system 3 on the top and sides to prevent external debris such as falling rocks and concrete from falling into the power system 3. Preferably, the front vehicle cover 7 is provided with a first support component 8, such as a bracket welded to the top of the front vehicle cover 7, which can support the boom system 2 when it is retracted.

[0057] Example 2

[0058] refer to Figure 1 , Figure 2 This embodiment discloses a wet concrete spraying machine for mining (hereinafter referred to as "wet spraying machine"), which mainly includes a rear vehicle assembly and a front vehicle assembly as described in Embodiment 1. The rear vehicle assembly includes a rear frame 9. Multiple ear plates are welded to the vertical plate at the first end of the rear frame 9 as a rear vehicle articulation frame 901. The rear vehicle articulation frame 901 and the front vehicle articulation frame 101 are hinged by a pin. A steering cylinder is also hinged between the vertical plate at the first end of the rear frame 9 and the vertical plate at the first end of the front frame 1. The angle between the front frame 1 and the rear frame 9 can be changed by extending and retracting the steering cylinder, thereby controlling the left and right steering of the entire vehicle. In specific applications, the steering angle of the entire vehicle can be adjusted by setting the distance between the hinge holes of the ear plates on the front frame 1 and the rear frame 9 and the corresponding vertical plates as needed.

[0059] In this embodiment, the rear frame 9 is a two-section detachable type, that is, the rear frame 9 includes a front section and a rear section. The front section and the rear section are assembled and fixed by connecting structures such as flanges and bolts. In other words, the wet spraying machine adopts a three-section assembled frame to facilitate transportation and on-site assembly in a small mine cage.

[0060] In this embodiment, the rear vehicle assembly also includes a cab 10, a hydraulic oil tank 11, an air compressor 12, a motor pump unit 13, a cable reel 14, an electrical control cabinet 15, a pumping mechanism 16, a pumping pipeline 17, a hydraulic radiator 18, and a water tank 19.

[0061] The cab 10 is mounted laterally on the top of the first end and first side of the rear frame 9 via bolts or welding, allowing the driver inside the cab 10 to face the side of the wet spraying machine. Specifically, the cab 10 includes a cab frame, a seat, and steering and driving control mechanisms. The cab frame is mounted on the top of the first end and first side of the rear frame 9, and the top of the cab frame has a protective cover. The seat is installed under the protective cover and close to the first side of the rear frame 9. The steering and driving control mechanisms are located directly in front of the seat within the cab 10 frame. The seat height is only slightly lower than the front frame 1, the front body panel 7, and the rear body panel 20, allowing the driver to observe the surroundings of the vehicle. Preferably, a handrail is installed at the end of the cab frame facing the front frame 1, corresponding to the outer side of the seat, to facilitate driver entry and exit, thus maximizing driver comfort while meeting the size limitations of the wet spraying machine.

[0062] The hydraulic oil tank 11 is located at the top of the first end and the second side of the rear frame 9, thus making full use of the remaining space at the first end of the rear frame 9. The air compressor 12 is located at the top of the rear frame 9 and behind the cab 10 and the hydraulic oil tank 11. The motor pump unit 13 is connected to the second side of the rear frame 9 via a bracket, and the motor pump unit 13 is located below the hydraulic oil tank 11 and the air compressor 12. Specifically, the side of the bracket is fixed to the rear frame 9 with high-strength bolts, and the motor pump unit 13 is mounted on the bracket via shock-absorbing pads, thereby protecting the motor under high-frequency vibration. By mounting the motor pump unit 13 below the hydraulic oil tank 11, the bottom of the hydraulic oil tank 11 and the motor pump unit can be directly connected using hydraulic oil pipes, requiring a short oil pipe length and resulting in high oil suction efficiency. At the same time, since the motor pump unit 13 is a high-heat and frequently maintained component, mounting it below the hydraulic oil tank 11 and the air compressor 12 via a separate bracket provides ample space for heat dissipation and facilitates maintenance.

[0063] Specifically, the air compressor 12 includes an air compressor body 1201, a heavy-duty air filter 1202, and a fan 1203. The air compressor body 1201 is located on top of the rear frame 9 and behind the cab 10 and hydraulic oil tank 11. The compressor head and tail of the air compressor body 1201 face the sides of the rear frame 9, providing ample space for heat dissipation. The fan 1203 is located on the first side of the rear frame 9 and behind the air compressor body 1201, as is the heavy-duty air filter 1202. The cable reel 14 is located on the first side of the rear frame 9, near the second end, behind the fan 1203. The electrical control cabinet 15 is located on the second side of the rear frame 9, near the second end, between the fan 1203 and the electrical control cabinet 15. The hydraulic radiator 18 is installed at the bottom of the cab 10, and the water tank 19 is installed on the rear frame 9 and adjacent to the hydraulic radiator 18. This embodiment effectively solves the problems of large transport volume and poor adaptability to the mining environment of traditional equipment by optimizing the layout design of core components such as the air compressor 12 on the rear assembly.

[0064] The pumping mechanism 16 is the main mechanism for controlling concrete spraying and determines the spraying volume. In this embodiment, the pumping mechanism 16 is fixedly installed at the second end of the rear frame 9 by bolts and other fasteners. Its working cylinder extends forward from the inside of the rear frame 9 and is fixed to the front stiffening plate of the rear frame 9 by the pumping water tank 19. One end of the pumping pipeline 17 is connected to the pumping mechanism 16 through a pump pipe clamp, and the other end is connected to the boom system 2, used to transport concrete to the nozzle on the boom system 2.

[0065] In practical implementation, the rear vehicle assembly also includes a rear wheel system 21, which includes two rear wheels and two rear mudguards. The two rear wheels are respectively mounted on both sides of the rear frame 9 via a reducer, and the two rear mudguards are respectively fixed to both sides of the rear frame 9 with bolts and other fasteners, covering the rear wheels on the corresponding sides. The electrical control cabinet 15 and the fan 1203 are respectively located on the rear mudguards on the corresponding sides, thereby making full use of the installation space on the rear frame 9 and giving the rear vehicle assembly a smaller width.

[0066] In this embodiment, a maintenance space accessible to maintenance personnel is provided between the cable reel 14, the fan 1203, the heavy-duty air filter 1202, the electrical control cabinet 15, and the pumping mechanism 16. Preferably, the cable reel 14 is rotatably connected to the rear frame 9 via a hinged rotating shaft, and the reel mounting seat on the rear frame 9 is equipped with a corresponding limiting device to control the rotation angle of the cable reel 14. The gap created by this angle allows maintenance personnel to enter the middle of the wet spraying machine for work. Simultaneously, the cable reel 14 is driven by a hydraulic motor to rotate, facilitating the winding and unwinding of the internal cables.

[0067] refer to Figure 4 The rear vehicle assembly also includes a rear vehicle cover 20, which is fixedly installed on the rear vehicle frame 9 by bolts and other fasteners. The rear vehicle cover 20 covers the air compressor 12 and the electrical control cabinet 15 on the top and sides to prevent external debris such as rocks and concrete from falling into the power system 3.

[0068] In practical implementation, the pumping pipeline 17 includes a rigid pipe assembly and a flexible hose assembly. The first end of the rigid pipe assembly is connected to the pumping mechanism 16, and the second end of the rigid pipe assembly passes above the rear vehicle cover 20 and above the hydraulic oil tank 11, and is located in front of the hydraulic oil tank 11. Preferably, the rear vehicle cover 20 and / or the hydraulic oil tank 11 are provided with a second support assembly 22, such as a support retaining ring, to support the rigid pipe assembly. The first end of the flexible hose assembly is detachably connected to the second end of the rigid pipe assembly, and the second end of the flexible hose assembly is connected to the boom system 2. By directing the pumping pipeline 17 entirely above the vehicle, the overall vehicle width is reduced, the driving performance of the wet spraying machine is improved, and it is more suitable for operation in narrow alleyways.

[0069] The above description is only a preferred embodiment of the present utility model and does not limit the scope of protection of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A front vehicle assembly for a mine concrete wet sprayer, characterized by, The front vehicle frame, the arm support system, the power system and the accelerator box, the first end of the front vehicle frame is provided with a front vehicle hinge frame, which is hinged with a rear vehicle assembly; The arm support system is arranged on the top of the second end of the front vehicle frame, and the power system is arranged on the top of the front vehicle frame and behind the arm support system; The number of accelerator boxes is two, and the two accelerator boxes are respectively arranged on the two sides of the power system.

2. A front vehicle assembly for a mine concrete wet shotcrete machine according to claim 1, characterised in that, It also includes a front wheel system, which includes two front wheels and two front fenders; The two front wheels are respectively installed on the two sides of the front vehicle frame, and the two front fenders are respectively fixedly connected to the two sides of the front vehicle frame and cover the front wheels on the corresponding side; Two accelerator boxes are respectively installed on the corresponding side of the front fender.

3. The front vehicle assembly for a mine concrete wet shotcrete machine of claim 1, wherein, It also includes a front vehicle cover, which is arranged on the front vehicle frame and covers the power system; The first support assembly is arranged on the front vehicle cover and used for supporting the arm support system.

4. A mine concrete wet sprayer characterized by, The rear vehicle assembly includes two detachable rear vehicle frames. The first end of the rear vehicle frame is provided with a rear vehicle hinge frame, which is hinged with the front vehicle hinge frame.

5. A mine concrete wet sprayer according to claim 4, characterised in that, The rear vehicle assembly also includes a cab, a hydraulic oil tank, an air compressor, a motor pump group, a cable reel, an electric control cabinet, a pumping mechanism, a pumping pipeline, a hydraulic radiator and a water tank. The cab is arranged on the top of the first side of the first end of the rear vehicle frame, and the hydraulic oil tank is arranged on the top of the second side of the first end of the rear vehicle frame. The air compressor is arranged on the top of the rear vehicle frame and behind the cab and the hydraulic oil tank, the motor pump group is connected to the second side of the rear vehicle frame through a support, and the motor pump group is below the hydraulic oil tank and the air compressor. The cable reel is arranged on the first side of the rear vehicle frame and close to the second end of the rear vehicle frame, and the electric control cabinet is arranged on the second side of the rear vehicle frame and close to the second end of the rear vehicle frame. The pumping mechanism is arranged on the second end of the rear vehicle frame, one end of the pumping pipeline is connected with the pumping mechanism, and the other end is connected with the arm support system. The hydraulic radiator is installed on the bottom of the cab, and the water tank is installed on the rear vehicle frame and adjacent to the hydraulic radiator.

6. A mine concrete wet sprayer according to claim 5, characterised in that, The air compressor includes an air compressor body, a heavy-load air filter and a fan. The air compressor body is arranged on the top of the rear vehicle frame and behind the cab and the hydraulic oil tank, the head and the tail of the air compressor body respectively face the two sides of the rear vehicle frame, and the motor pump group is below the hydraulic oil tank and the head of the air compressor body. The fan is arranged on the first side of the rear vehicle frame and behind the air compressor body, and the cable reel is behind the fan. The heavy-load air filter is behind the air compressor body, and the heavy-load air filter is between the fan and the electric control cabinet.

7. A mine concrete wet sprayer according to claim 6, characterised in that, The rear vehicle assembly also includes a rear wheel system, which includes two rear wheels and two rear fenders. The two rear wheels are respectively installed on the two sides of the rear vehicle frame, and the two rear fenders are respectively fixedly connected to the two sides of the rear vehicle frame and cover the rear wheels on the corresponding side. The electric control cabinet and the fan are respectively arranged on the rear fender of the corresponding side.

8. A mine concrete wet sprayer according to claim 6, characterised in that, The cable reel, the fan, the heavy load air filter, the electric control cabinet and the pumping mechanism have a maintenance space for a maintenance worker to enter; The cable reel is rotatably connected to the rear frame through a hinged rotating shaft, so as to control opening and closing of the maintenance space.

9. A wet-mix shotcrete machine according to any one of claims 5 to 8, characterised in that, The rear vehicle assembly further comprises a rear vehicle cover arranged on the rear frame and covering the air compressor and the electric control cabinet.

10. A mine concrete wet sprayer according to claim 9, characterised in that, The pumping pipeline comprises a hard pipe assembly and a hose assembly. A first end of the hard pipe assembly is connected to the pumping mechanism, a second end of the hard pipe assembly is located in front of the hydraulic oil tank after passing above the rear vehicle cover and above the hydraulic oil tank, and the rear vehicle cover and / or the hydraulic oil tank is / are provided with a second support assembly capable of supporting the hard pipe assembly; A first end of the hose assembly is detachably connected to the second end of the hard pipe assembly, and a second end of the hose assembly is connected to the arm support system.

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