Manual spraying device for trailer carriage
The design of the manual spraying device solves the problem of material sticking in the trailer body, enabling flexible use and thorough unloading in field operations, extending the life of the trailer body, and avoiding reliance on complex automatic systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG CHAMPION SPECIAL VEHICLE MFG CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-12
AI Technical Summary
When transporting materials that are prone to adhesion, existing trailer bodies often have problems such as incomplete unloading, increased transport weight, and corrosion of the trailer body panels. Furthermore, the automatic sprinkler system cannot be used in field operations or when it malfunctions.
A manual sprinkler system for trailer cargo compartments was designed. It uses basic components such as a liquid storage tank, a hose reel assembly, and a spray gun. Manual spraying is achieved by manually operating the hose reel assembly to extend and retract the pipe, thus avoiding reliance on electric or hydraulic systems.
Even during field operations or system failures, it can effectively prevent materials from sticking together, ensure thorough unloading, reduce transport weight, extend the service life of the carriage, and has a simple structure and flexible operation.
Smart Images

Figure CN224221665U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary equipment for transport vehicles, and in particular to a manual sprinkler system for trailer bodies. Background Technology
[0002] When transporting easily adhesive materials such as concrete, slurry, and ore powder, the materials tend to stick to the inner walls of the trailer, leading to incomplete unloading, increased transport weight, and corrosion of the trailer panels. Currently, a common solution is to spray diesel fuel or release agent onto the inner walls of the trailer using a spray system before reloading, which effectively prevents adhesion. Some vehicles are equipped with automatic spray systems, but these are complex, costly, and rely on electric or hydraulic systems, making them unusable in field operations or in case of system failure. Therefore, there is an urgent need for a simple, easy-to-operate manual spray system for trailer trailers. Utility Model Content
[0003] To achieve the above objectives, this utility model provides the following technical solution: a manual sprinkler system for trailer cargo compartments, comprising a cargo compartment, a hose reel assembly, a liquid storage tank, a liquid storage vessel, pipe one, pipe two, a pipe connector, and a spray gun. The liquid storage tank is mounted on the frame at the bottom of the cargo compartment, and the liquid storage vessel is located inside the liquid storage tank. An outlet is located at the bottom of the liquid storage vessel, and pipe one is connected to the outlet. The pipe connector is mounted on the hose reel assembly, and pipe one and pipe two are connected via the pipe connector. Pipe two is coiled on the hose reel assembly, and the end of pipe two furthest from the pipe connector is connected to the spray gun. The pipe connector is located inside the cargo compartment.
[0004] The pipe winding assembly includes a bracket, a rotating shaft, a roller, and a handle. The rotating shaft is mounted on the bracket via a shaft seat. One end of the rotating shaft is provided with a handle fixing groove, and the handle is installed in the handle fixing groove. The roller is fixedly mounted on the rotating shaft, and the pipe coils are mounted on the roller.
[0005] The bracket is provided with a limiting seat, and the limiting seat is provided with a limiting hole, through which the second pipe passes.
[0006] The storage tank is equipped with a water level sensor.
[0007] The interior of the carriage is equipped with a storage box, the pipe connector is located inside the storage box, the storage box has a through hole, a rubber sealing block is installed at the position of the through hole, and a spray gun bracket is also installed inside the storage box.
[0008] The inner wall of each liquid storage tank is provided with a heat insulation layer, and a heating plate is also provided inside the liquid storage tank.
[0009] A third pipe is connected to one side of the bottom of the liquid storage tank. A pump body is installed on the third pipe. The input end of the pump body is connected to the liquid storage tank. The third pipe is connected to the first pipe. A valve is installed on the third pipe. A valve is installed on the first pipe. The valve is located at the front end of the connection between the third pipe and the first pipe.
[0010] A flow regulating valve is installed on the second pipeline.
[0011] Beneficial Effects: Compared with the prior art, the beneficial effects of this utility model are as follows: This manual spraying device eliminates the need for a complex automatic spraying system, and is composed of basic components such as a liquid storage tank, a hose reel assembly, and a spray gun. The hose reel assembly can be wound up and down by rotating the handle, and spraying is performed in conjunction with the spray gun. It does not rely on an electric or hydraulic system. Even in field operations, environments lacking power supply, or when the system malfunctions, operators can still easily complete the spraying of the inner walls of the truck bed, greatly improving the flexibility and applicability of the device. Before transporting easily adhered materials, spraying diesel fuel or release agent onto the inner walls of the truck bed with this device forms an isolation layer, effectively preventing materials from adhering to the inner walls, thus ensuring thorough unloading, avoiding increased transport weight due to material residue, and reducing corrosion of the truck bed panels, extending the service life of the truck bed. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the manual sprinkler system for trailer bodies proposed in this utility model.
[0013] Figure 2 This is a schematic diagram of the structure of the storage box for the manual sprinkler device in the trailer body, as proposed in this utility model, installed inside the trailer body.
[0014] Figure 3 This is a schematic diagram of the hose reel assembly of the manual sprinkler system for trailer cargo compartments proposed in this utility model.
[0015] Figure 4 This is a three-dimensional structural diagram of the hose reel assembly of the manual sprinkler system for trailer cargo compartments proposed in this utility model.
[0016] In the attached diagram: 1-Carriage, 2-Storage tank, 3-Storage container, 4-Pipe 1, 5-Pipe 2, 6-Pipe connector, 7-Spray gun, 8-Bracket, 9-Shaft, 10-Roller, 11-Handle, 12-Handle fixing groove, 13-Limit seat, 14-Limit hole, 15-Water level sensor, 16-Storage box, 17-Through hole, 18-Rubber sealing block, 19-Spray gun bracket, 20-Insulation layer, 21-Pipe 3, 22-Pump body, 23-Valve 1, 24-Valve 2, 25-Flow regulating valve, 26-Heating plate. Detailed Implementation
[0017] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0018] Example
[0019] Please refer to the accompanying drawings in the specification. In this embodiment of the utility model, the manual sprinkler device for the trailer includes a trailer body 1, a hose assembly, a liquid storage tank 2, a liquid storage container 3, a first pipe 4, a second pipe 5, a pipe connector 6, and a spray gun 7. The liquid storage tank 2 is mounted on the frame at the bottom of the trailer body 1. The liquid storage container 3 is located inside the liquid storage tank 2. The bottom end of the liquid storage container 3 has a liquid outlet, which is connected to the first pipe 4. The pipe connector 6 is mounted on the hose assembly. The first pipe 4 and the second pipe 5 are connected through the pipe connector 6. The second pipe 5 is coiled on the hose assembly, and the end of the second pipe 5 away from the pipe connector 6 is connected to the spray gun 7. The pipe connector 6 is located inside the trailer body 1.
[0020] The hose reel assembly includes a bracket 8, a rotating shaft 9, a roller 10, and a handle 11. The rotating shaft 9 is mounted on the bracket 8 via a shaft seat. One end of the rotating shaft 9 has a handle fixing groove 12, and the handle 11 is installed in the handle fixing groove 12. The roller 10 is fixedly mounted on the rotating shaft 9, and the second pipe 5 is coiled on the roller 10. A storage box 16 is provided inside the carriage 1. The pipe connector 6 is located inside the storage box 16. A through hole 17 is provided on the storage box 16, and a rubber sealing block 18 is provided at the position of the through hole 17. A spray gun bracket 19 is also provided inside the storage box 16. The hose reel assembly includes a bracket, a rotating shaft, a roller, and a handle. The second pipe can be easily reeled in and out by rotating the rotating shaft with the handle. The setting of the limiting seat and the limiting hole can guide the pipe to wind neatly, avoid the pipe from knotting or becoming messy, improve the convenience of operation, and make it convenient for users to quickly unfold the spray gun when needed and retract it in time after use.
[0021] The liquid storage tank is located on the frame at the bottom of the trailer, and the liquid storage container is placed inside the liquid storage tank. The pipes are coiled around the rollers of the hose reel assembly. This layered and storage design makes full use of the space at the bottom of the trailer and inside the trailer, avoids the device occupying too much transport space, and ensures the cargo capacity of the trailer.
[0022] The pipe fittings are stored in a compartment inside the carriage, and the compartment is equipped with a spray gun holder, which allows the spray gun and pipe assembly to be stored together, preventing the parts from shaking or being damaged during transportation, and making them easy to access.
[0023] The bracket 8 is provided with a limiting seat 13, and the limiting seat 13 is provided with a limiting hole 14, through which the second pipe 5 passes.
[0024] The liquid storage tank 3 is equipped with a water level sensor 15, which is connected to the control system inside the cab. The cab can monitor the amount of liquid inside the storage tank in real time on the display screen.
[0025] The inner wall of each liquid storage tank 2 is provided with a heat insulation layer 20, and a heating plate 21 is also provided inside the liquid storage tank 2. The heat insulation layer on the inner wall of the liquid storage tank and the heating plate inside can maintain the liquid temperature in low-temperature environments, prevent the liquid from freezing or affecting the fluidity due to excessively low temperature, and ensure the normal use of the device.
[0026] A pipe 21 is connected to one side of the bottom of the liquid storage tank 3. A pump body 22 is installed on the pipe 21. The input end of the pump body 22 is connected to the liquid storage tank 3. The pipe 21 is connected to the pipe 4. A valve 23 is installed on the pipe 21. A valve 24 is installed on the pipe 4. The valve 24 is located at the front end where the pipe 21 connects to the pipe 4.
[0027] The bottom of the storage tank is connected to Pipeline 2 via Pipeline 1. Pipeline 3, a pump, and valves are also installed, forming a dual liquid supply path: Under normal circumstances, liquid can be supplied directly through Pipeline 1 via the storage tank outlet; when increased liquid pressure or replenishment of liquid outside the storage tank is required, the pump and valve 1 can be activated to pump liquid from the storage tank into Pipeline 1 via Pipeline 3, meeting different pressure requirements and adapting to complex operating conditions. Valve 2 is located at the connection point between Pipeline 3 and Pipeline 1, controlling the on / off state of the main pipeline and working in conjunction with valve 1 to switch and control the liquid supply path.
[0028] A flow regulating valve 25 is installed on the second pipe 5.
[0029] Working Principle: First, check the levels of diesel fuel, mold release agent, and other anti-sticking liquids in the storage tank. If the water level sensor indicates a low level, replenish the liquid promptly. Simultaneously, ensure valves one and two are closed to prevent accidental leakage. Next, open the storage compartment inside the truck bed, remove the spray gun, and check the spray gun, pipe two, and all connections for damage or leaks. Open valve two on pipe one, allowing the liquid from the storage tank to flow into pipe one through the outlet, and then into pipe two through the pipe connector. Then, rotate the handle of the hose reel assembly to rotate the shaft and roller, extending an appropriate length of pipe two to ensure the spray gun reaches all areas of the truck bed that require spraying. The operator holds the spray gun and sprays evenly onto the truck bed walls, forming an anti-sticking barrier layer. If the standard spray flow rate is insufficient for large-area rapid spraying, open valve one on pipe three and start the pump. After the pump starts, the liquid in the storage tank is accelerated and transported to pipe one through pipe three, increasing the liquid flow rate and enabling the spray gun to quickly spray more liquid, completing the high-flow-rate spraying operation. After the operation is completed, the pump and valve one are closed, and the normal spraying state is restored. After the spraying operation is completed, the handle is turned in the opposite direction to neatly reel in pipe two onto the roller, and the spray gun is placed back into the spray gun bracket in the storage box and secured. Valve two on pipe one is closed to prevent liquid residue leakage. Regularly check the working condition of the insulation layer and heating plate of the storage tank to ensure that the liquid does not solidify in cold weather; clean the debris in the storage tank, check the sealing of the rubber sealing blocks, and perform daily maintenance of the device.
[0030] In the aforementioned process, this manual spraying device abandons the complex automatic spraying system, and is composed of basic components such as a liquid storage tank, hose reel assembly, and spray gun. The hose reel assembly's roller is rotated by a handle to extend and retract the hose, which, in conjunction with the spray gun, performs the spraying operation. It does not rely on an electric or hydraulic system, so even in field operations, environments without power supply, or when the system malfunctions, operators can still easily complete the spraying of the truck bed's inner walls, greatly improving the device's flexibility and applicability. Before transporting easily adhered materials, this device can be used to spray diesel fuel or release agents onto the truck bed's inner walls, forming an isolation layer that effectively prevents materials from sticking to the inner walls, thus ensuring thorough unloading, avoiding increased transport weight due to material residue, and reducing corrosion of the truck bed panels, extending the truck bed's service life.
[0031] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.
Claims
1. A manual sprinkler system for trailer cargo compartments, characterized in that: The system includes a carriage (1), a hose assembly, a liquid storage tank (2), a liquid storage container (3), a first pipe (4), a second pipe (5), a pipe connector (6), and a spray gun (7). The liquid storage tank (2) is located on the frame at the bottom of the carriage (1). The liquid storage container (3) is located inside the liquid storage tank (2). The bottom end of the liquid storage container (3) is provided with a liquid outlet. The first pipe (4) is connected to the liquid outlet. The pipe connector (6) is located on the hose assembly. The first pipe (4) and the second pipe (5) are connected through the pipe connector (6). The second pipe (5) is coiled on the hose assembly. The end of the second pipe (5) away from the pipe connector (6) is connected to the spray gun (7). The pipe connector (6) is located inside the carriage (1).
2. The manual sprinkler system for trailer bodies according to claim 1, characterized in that: The tube assembly includes a bracket (8), a rotating shaft (9), a roller (10), and a handle (11). The rotating shaft (9) is mounted on the bracket (8) via a shaft seat. One end of the rotating shaft (9) is provided with a handle fixing groove (12). The handle (11) is installed in the handle fixing groove (12). The roller (10) is fixedly mounted on the rotating shaft (9). The second tube (5) is coiled on the roller (10).
3. The manual sprinkler system for trailer bodies according to claim 2, characterized in that: The bracket (8) is provided with a limiting seat (13), and the limiting seat (13) is provided with a limiting hole (14), through which the second pipe (5) passes.
4. The manual sprinkler system for trailer bodies according to claim 1, characterized in that: The liquid storage tank (3) is equipped with a water level sensor (15).
5. The manual sprinkler system for trailer bodies according to claim 1, characterized in that: The compartment (1) is equipped with a storage box (16), the pipe connector (6) is located inside the storage box (16), the storage box (16) has a through hole (17), a rubber sealing block (18) is located at the through hole (17), and a spray gun bracket (19) is also provided inside the storage box (16).
6. The manual sprinkler system for trailer bodies according to claim 1, characterized in that: The inner wall of the liquid storage tank (2) is provided with a heat insulation layer (20), and a heating plate (26) is also provided inside the liquid storage tank (2).
7. The manual sprinkler system for trailer bodies according to claim 1, characterized in that: The bottom of the storage tank (3) is connected to a pipe three (21), and a pump body (22) is installed on the pipe three (21). The input end of the pump body (22) is connected to the storage tank (3). The pipe three (21) is connected to the pipe one (4). A valve one (23) is installed on the pipe three (21), and a valve two (24) is installed on the pipe one (4). The valve two (24) is located at the front end where the pipe three (21) and the pipe one (4) are connected.
8. The manual sprinkler system for trailer bodies according to claim 1, characterized in that: A flow regulating valve (25) is installed on the second pipe (5).