Tunnel construction concrete wet spraying trolley

Abstract

The utility model provides a kind of tunnel construction concrete wet spraying trolley, it is related to wet spraying trolley technical field, including vehicle body, the vehicle body upper surface one side is provided with cab and mixing hopper, the vehicle body upper surface other side is provided with rotary jet arm and pipe coiler, the vehicle body upper surface one side is provided with outer cover, engine set is arranged in the outer cover. In the utility model centrifugal fan operation, inhale air from the outside of outer cover, the inhaled air enters by inlet pipe, centrifugal fan pressurizes after inhaling air, and exhaust pipe is discharged by its output end, hot air after heat exchange is discharged naturally by louvre being set on the side surface of outer cover, effective forced convection heat dissipation circulation is formed, heat dissipation efficiency is high, and equipment can be effectively prevented in high temperature high load working condition due to overheating and shutdown.

Description

Technical Field

[0001] This utility model relates to the field of wet spraying trolley technology, and more specifically, to a wet spraying trolley for tunnel construction concrete. Background Technology

[0002] A wet concrete spraying trolley is a large-scale, modern concrete spraying support equipment that integrates walking, concrete pumping, material mixing and adding, high-pressure spraying, and intelligent control. It represents the highest level of concrete spraying technology in tunnels, slopes, and underground engineering, and is gradually replacing traditional manual dry spraying and simple wet spraying machines, becoming the mainstream equipment in engineering construction. For example, the mine wet spraying trolley proposed in publication number "CN221722814U" has a tilting mechanism installed on one side of the frame, with the position of the tilting mechanism corresponding to the position of the control equipment. The frame consists of a front frame and a rear frame, with a spraying mechanism and a cab installed on the front frame. The spraying mechanism is located on one side of the cab. The control equipment and the tilting mechanism are installed on the rear frame. A connecting plate is located behind the rear frame and fixedly connected, and a positioning rod is fixedly connected to the connecting plate. One side of the positioning rod is connected to a placement plate via a connector, and the placement plate has an integrated electrical control box within the control equipment.

[0003] However, in the above technical solutions, the power system of the wet spraying trolley is usually housed in a closed or semi-closed enclosure. Its heat dissipation mainly relies on passive heat dissipation through louvers on the surface of the enclosure. This heat dissipation method is inefficient. When the equipment is running under high load for a long time, heat accumulates severely in the engine compartment, which can easily lead to engine overheating, resulting in power reduction, shutdown, or even damage, seriously affecting construction efficiency. Utility Model Content

[0004] The main purpose of this utility model is to provide a wet concrete spraying trolley for tunnel construction, which can effectively solve the problem that the power system of the wet spraying trolley in the background technology is usually installed in a closed or semi-closed enclosure. Its heat dissipation mainly relies on louvers on the surface of the enclosure for passive heat dissipation. This heat dissipation method is inefficient. When the equipment is running under high load for a long time, the heat in the engine compartment will accumulate seriously, which will easily lead to engine overheating, resulting in power reduction, shutdown or even damage, seriously affecting construction efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A concrete wet spraying trolley for tunnel construction includes a vehicle body, with a driver's cab and a mixing hopper provided on one side of the upper surface of the vehicle body, and a rotary spraying arm and a hose reel provided on the other side of the upper surface of the vehicle body.

[0007] An outer cover is provided on one side of the upper surface of the vehicle body, an engine unit is provided inside the outer cover, a hatch is installed on one side of the outer cover, a heat dissipation component is provided inside the outer cover, and louvers for exhaust are provided on one side of the outer cover.

[0008] Preferably, the heat dissipation assembly includes a bracket, which is fixedly installed at the bottom inside the outer cover. A centrifugal fan is fixedly installed on the upper surface of the bracket. A side plate is provided on one side of the centrifugal fan. An air inlet pipe is fixedly installed on one side of the side plate and extends to the outside of the outer cover.

[0009] An exhaust pipe is fixedly installed at the output end of the centrifugal fan.

[0010] Preferably, the exhaust pipe port is fixedly installed with a connecting plate by bolts, the upper surface of the connecting plate is provided with an air hole, and a dust removal filter element is fixedly installed on the lower surface of the connecting plate at the position of the air hole.

[0011] Preferably, two positioning rods are fixedly installed inside the top of the outer cover, and an air supply pipe is fixedly installed at the lower end of the two positioning rods. Several nozzles are fixedly installed on the body of the air supply pipe.

[0012] Preferably, a right-angle tube is fixedly installed on the upper surface of the connecting plate at the air hole position, and a horizontal tube is fixedly installed on the body of the air supply pipe. The horizontal tube and the right-angle tube are connected by a detachable connection method.

[0013] Preferably, the horizontal tube and the right-angle tube are connected by a flange.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) When the centrifugal fan is running, it draws in air from outside the outer casing. The air is drawn in through the air inlet pipe. After the centrifugal fan pressurizes the air, it is discharged through the exhaust pipe at its output end. The hot air after heat exchange is completed is discharged naturally through the louvers set on one side of the outer casing, forming an effective forced convection heat dissipation cycle with high heat dissipation efficiency. It can effectively prevent the equipment from shutting down due to overheating under high temperature and high load conditions.

[0016] (2) Air is sent into the exhaust pipe by the centrifugal fan and flows through the dust filter element fixedly installed on the lower surface of the connecting plate. The dust filter element effectively filters most of the dust in the air, ensuring that clean air is blown to the engine unit and preventing dust from accumulating on the engine surface and affecting heat dissipation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a wet concrete spraying trolley for tunnel construction according to the present invention.

[0018] Figure 2This is a top view schematic diagram of a wet concrete spraying trolley for tunnel construction according to the present invention.

[0019] Figure 3 This utility model relates to a wet spraying trolley for tunnel construction concrete. Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0020] Figure 4 This utility model relates to a wet spraying trolley for tunnel construction concrete. Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0021] Figure 5 This utility model relates to a wet spraying trolley for tunnel construction concrete. Figure 3 Enlarged schematic diagram of the structure at point A;

[0022] Figure 6 This utility model relates to a wet spraying trolley for tunnel construction concrete. Figure 4 Enlarged schematic diagram of the structure at point B.

[0023] In the diagram: 1. Vehicle body; 2. Cab; 3. Mixing hopper; 4. Rotary spray arm; 5. Hose reel; 6. Outer cover; 601. Cabin; 7. Engine assembly; 8. Cooling components; 801. Bracket; 802. Centrifugal fan; 803. Side plate; 804. Intake pipe; 805. Exhaust pipe; 9. Louver; 10. Bolt; 11. Connecting plate; 12. Air hole; 13. Dust filter element; 14. Positioning rod; 15. Air supply pipe; 16. Nozzle; 17. Right-angle pipe; 18. Horizontal pipe. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0025] like Figures 1-6 As shown, a concrete wet spraying trolley for tunnel construction includes a vehicle body 1. A driver's cab 2 and a mixing hopper 3 are provided on one side of the upper surface of the vehicle body 1, and a rotary spraying arm 4 and a hose reel 5 are provided on the other side of the upper surface of the vehicle body 1.

[0026] An outer cover 6 is provided on one side of the upper surface of the vehicle body 1. An engine unit 7 is provided inside the outer cover 6. A hatch 601 is installed on one side of the outer cover 6. A heat dissipation component 8 for heat dissipation is provided inside the outer cover 6. A louver 9 for exhaust is provided on one side of the outer cover 6.

[0027] The heat dissipation assembly 8 includes a bracket 801, which is fixedly installed inside the bottom of the outer cover 6. A centrifugal fan 802 is fixedly installed on the upper surface of the bracket 801. A side plate 803 is provided on one side of the centrifugal fan 802. An air inlet pipe 804 is fixedly installed on one side of the side plate 803 and extends to the outside of the outer cover 6.

[0028] An exhaust pipe 805 is fixedly installed at the output end of the centrifugal fan 802.

[0029] The operator controls the entire vehicle body 1 from inside the cab 2 to move it to the working face. Premixed concrete is fed into the mixing hopper 3 and continuously mixed to prevent solidification. Subsequently, the material is pumped to the rotary spraying arm 4, and the operator controls the movement of the rotary spraying arm 4 to evenly spray concrete onto the tunnel walls. A hose reel 5 connected to the rotary spraying arm 4 is used to orderly wind high-pressure hydraulic hoses or delivery pipes, ensuring that the hoses do not become tangled during the rotation of the rotary spraying arm 4. When the engine unit 7 starts working and generates heat, the cooling components 8 installed inside the outer casing 6 start simultaneously, and the centrifugal fan 802 begins operating, drawing air from outside the outer casing 6. The intake air enters through the intake pipe 804. After the centrifugal fan 802 pressurizes the intake air, it is discharged through the exhaust pipe 805 at its output end. The hot air after heat exchange is finally discharged naturally through the louvers 9 set on one side surface of the outer cover 6, forming an effective forced convection heat dissipation cycle with high heat dissipation efficiency, which can effectively prevent the equipment from shutting down due to overheating under high temperature and high load conditions.

[0030] In another embodiment of the present invention, a connecting plate 11 is fixedly installed at the outlet of the exhaust pipe 805 by bolts 10. An air hole 12 is opened through the upper surface of the connecting plate 11, and a dust removal filter element 13 is fixedly installed on the lower surface of the connecting plate 11 at the position of the air hole 12.

[0031] Before the air is sent into the exhaust pipe 805 by the centrifugal fan 802, it will flow through the dust filter element 13 fixedly installed on the lower surface of the connecting plate 11. The dust filter element 13 can effectively filter most of the dust in the air, ensuring that the air blown to the engine assembly 7 is clean air, and preventing dust from accumulating on the engine surface and affecting heat dissipation.

[0032] In another embodiment of this utility model, two positioning rods 14 are fixedly installed at the top inside the outer cover 6, and an air supply pipe 15 is fixedly installed at the lower end of the two positioning rods 14. Several nozzles 16 are fixedly installed on the body of the air supply pipe 15.

[0033] Pressurized air is introduced into the horizontal pipe 18 through the right-angle pipe 17, and then into the air supply pipe 15, which is fixedly installed inside the top of the outer casing 6. The air supply pipe 15 is firmly supported by two positioning rods 14. Finally, the air is sprayed into the surface of the key heat-generating parts of the engine assembly 7 at a certain speed and angle through several nozzles 16 evenly distributed on the body of the air supply pipe 15.

[0034] In another embodiment of this utility model, a right-angle tube 17 is fixedly installed on the upper surface of the connecting plate 11 at the position of the air hole 12, and a horizontal tube 18 is fixedly installed on the body of the air supply pipe 15. The horizontal tube 18 and the right-angle tube 17 are connected by a detachable connection.

[0035] The horizontal tube 18 and the right-angle tube 17 are connected by a flange.

[0036] The connecting plate 11 is connected to the exhaust pipe 805 by the first bolt 10. The horizontal pipe 18 and the right-angle pipe 17 are connected by a flange or other detachable connection method, which makes it very convenient to replace the dust filter element 13 and maintain and clean the entire pipeline.

[0037] The working principle of a wet concrete spraying trolley for tunnel construction:

[0038] The operator controls the entire vehicle body 1 from inside the cab 2 to move it to the working face. Premixed concrete is fed into the mixing hopper 3 and continuously mixed to prevent solidification. Subsequently, the material is pumped to the rotary spraying arm 4, and the operator controls the movement of the rotary spraying arm 4 to evenly spray concrete onto the tunnel walls. A hose reel 5 connected to the rotary spraying arm 4 is used to orderly wind high-pressure hydraulic hoses or delivery pipes, ensuring that the hoses do not become tangled during the rotation of the rotary spraying arm 4. When the engine unit 7 starts working and generates heat, the cooling components 8 installed inside the outer casing 6 start simultaneously, and the centrifugal fan 802 begins operating, drawing air from outside the outer casing 6. The intake air enters through the intake pipe 804. After the centrifugal fan 802 pressurizes the intake air, it is discharged through the exhaust pipe 805 at its output end. The hot air after heat exchange is finally discharged naturally through the louvers 9 set on one side surface of the outer cover 6, forming an effective forced convection heat dissipation cycle with high heat dissipation efficiency, which can effectively prevent the equipment from shutting down due to overheating under high temperature and high load conditions.

[0039] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A wet concrete spraying trolley for tunnel construction, comprising a vehicle body (1), characterized in that: The vehicle body (1) has a driver's cab (2) and a mixing hopper (3) on one side of its upper surface, and a rotary spray arm (4) and a hose reel (5) on the other side of its upper surface. The vehicle body (1) has an outer cover (6) on one side of its upper surface. An engine pack (7) is installed inside the outer cover (6). A hatch (601) is installed on one side of the outer cover (6). A heat dissipation assembly (8) for heat dissipation is installed inside the outer cover (6). A louver (9) for exhaust is provided on one side of the outer cover (6). The heat dissipation assembly (8) includes a bracket (801), which is fixedly installed at the bottom inside the outer cover (6). A centrifugal fan (802) is fixedly installed on the upper surface of the bracket (801). A side plate (803) is provided on one side of the centrifugal fan (802). An air inlet pipe (804) is fixedly installed on one side of the side plate (803). The air inlet pipe (804) extends to the outside of the outer cover (6). The centrifugal fan (802) is fixedly installed with an exhaust pipe (805) at its output end. The exhaust pipe (805) is fixedly installed with a connecting plate (11) by bolts (10). The upper surface of the connecting plate (11) is provided with an air hole (12). The lower surface of the connecting plate (11) is fixedly installed with a dust removal filter element (13) at the position of the air hole (12).

2. The tunnel construction concrete wet spraying trolley according to claim 1, characterized in that: Two positioning rods (14) are fixedly installed inside the top of the outer cover (6). The lower ends of the two positioning rods (14) are fixedly installed with an air supply pipe (15). Several nozzles (16) are fixedly installed on the body of the air supply pipe (15).

3. A wet concrete spraying trolley for tunnel construction according to claim 2, characterized in that: A right-angle tube (17) is fixedly installed on the upper surface of the connecting plate (11) at the position of the air hole (12), and a horizontal tube (18) is fixedly installed on the body of the air supply pipe (15). The horizontal tube (18) and the right-angle tube (17) are connected by a detachable connection.

4. A wet concrete spraying trolley for tunnel construction according to claim 3, characterized in that: The horizontal tube (18) and the right-angle tube (17) are connected by a flange.

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