A negative pressure cleaning device for residual coal in a wagon
By using a direct-drive motor to drive the roller brush and a modularly designed negative pressure cleaning device for residual coal in the car body, the problems of complex structure and inconvenient operation of existing devices have been solved. This has enabled efficient and convenient cleaning of the car body and flexible operational adaptability, improving cleaning effect and equipment maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN WUSHI HUANNENG TECH CO LTD
- Filing Date
- 2025-09-11
- Publication Date
- 2026-07-24
AI Technical Summary
Existing coal cleaning devices for railway cars are complex in structure and inconvenient to operate, making them difficult to adapt to different sizes of railway cars and complex working environments. They also suffer from poor cleaning performance and equipment interference.
A negative pressure cleaning device for residual coal in a car body was designed. It uses a direct-drive motor to drive the roller brush, and combines a damping hinge and telescopic rod structure to achieve adjustable angle and length of the device. It is equipped with a high-elasticity rubber connecting pipe and sealing ring to ensure sealing and flexibility. The modular design facilitates quick disassembly and maintenance.
It enables efficient and convenient cleaning of the carriage, avoids structural interference, improves operational comfort and equipment lifespan, reduces coal dust leakage and secondary pollution, and enhances operational efficiency and maintenance convenience.
Smart Images

Figure CN224545930U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of residual coal cleaning technology in railway carriages, specifically a negative pressure cleaning device for residual coal in railway carriages. Background Technology
[0002] Coal cleaning in train carriages refers to the mechanized cleaning and collection of coal slag, mineral powder, and other materials remaining in the freight carriages after unloading. It is mainly used in scenarios such as ports and power plants where transportation vehicles need to be cleaned.
[0003] Conventional negative pressure cleaning devices for residual coal in railway cars often suffer from complex structures and inconvenient operation, making it difficult to achieve efficient and flexible cleaning operations when faced with railway cars of different sizes and complex working environments. Due to design flaws, some devices are prone to structural interference during the cleaning process, affecting cleaning effectiveness and work efficiency. Furthermore, the connection and adjustment between the various components of the equipment are not convenient enough, increasing the labor intensity of operators. Utility Model Content
[0004] The purpose of this utility model is to provide a negative pressure cleaning device for residual coal in a train car to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure cleaning device for residual coal in a car body, comprising a cleaning component and a mounting bracket component. The mounting bracket component is connected and installed on both sides of the cleaning component, and an operating rod component is movably connected and installed on the side of the mounting bracket component away from the cleaning component. A connecting pipe component is connected and installed in the middle of the top of the cleaning component. The mounting bracket component includes a support frame, a direct drive motor, a fixed seat, a damping hinge, and a fastening bolt. The direct drive motor is symmetrically installed at both ends of the support frame near the cleaning component, and a fixed seat is connected and installed in the middle of the end of the support frame near the operating rod component. A damping hinge is connected and installed on the side of the fixed seat away from the support frame, and a fastening bolt is installed through the horizontal thread at the axis of the damping hinge.
[0006] Furthermore, the cleaning component includes a protective cover, a roller brush, a connecting shaft, an air inlet, and a connector. The roller brush is horizontally installed in the middle of the interior of the protective cover, and the two ends of the roller brush are connected to the connecting shaft. An air inlet is provided in the middle of the top of the protective cover, and a connector is installed at the end of the air inlet near the connecting pipe component.
[0007] Furthermore, the air inlet and the protective cover are integrated into one structure, and the air inlet and the connector are fixedly connected.
[0008] Furthermore, the power output end of the direct drive motor is connected to the connecting shaft, and the fixed base adopts a front and rear clamping detachable structure and is connected to the support frame.
[0009] Furthermore, the operating lever component includes a damping telescopic rod, a docking seat, an adjusting bolt, and an anti-slip handle. The damping telescopic rod has a docking seat integrally provided at one end near the mounting bracket component, an adjusting bolt is installed in the middle section of the damping telescopic rod, and an anti-slip handle is installed on the surface of the end of the damping telescopic rod away from the docking seat.
[0010] Furthermore, the damping telescopic rod and the docking seat are integrally formed, and the docking seat has holes for bolt installation at four opposite corners on the side away from the damping telescopic rod and the side away from the fixed seat of the damping hinge.
[0011] Furthermore, the connecting pipe component includes a combined hose, a combined end, and a sealing ring. Both ends of the combined hose are equipped with combined ends, and a sealing ring is installed on the surface of the combined end away from the combined hose.
[0012] Furthermore, the combined end and the connector are connected in a detachable structure, and the sealing ring is embedded in the side of the combined end.
[0013] This utility model provides a negative pressure cleaning device for residual coal in a railway car, which has the following beneficial effects:
[0014] 1. This utility model, through the structural arrangement between the cleaning component and the mounting bracket component, utilizes a direct-drive motor to drive the connecting shaft, causing the roller brush to rotate at high speed. This allows for efficient brushing of residual coal on the inner wall of the vehicle compartment. Simultaneously, the support frame forms an adjustable connection structure with the operating lever component via a damping hinge. The user can adjust the angle between the support frame and the operating lever component by rotating the fastening bolt, achieving stepless angle adjustment within the range of 0-90°. This effectively avoids structural interference between the device and the corners of the vehicle compartment during cleaning. Furthermore, the operating lever component adopts a damping telescopic rod design, allowing for continuous length adjustment within a certain range via an adjusting bolt. This, combined with the annular surface of the anti-slip handle... The textured surface ensures stable grip during operation and allows for quick assembly and disassembly through standardized holes in the docking seat and mounting bracket components, meeting the cleaning needs of carriages of different heights. This structure enhances the device's environmental adaptability and ease of operation during cleaning. Furthermore, the components are connected via standardized interfaces. The protective cover for the cleaning components is made of 304 stainless steel (2mm thick), while the support frame for the mounting bracket components is made of 6061-T6 aluminum alloy (yield strength 240MPa). This ensures structural strength while keeping the overall weight within a manageable range, facilitating single-person operation and handling.
[0015] 2. This utility model, through the inclusion of a connecting pipe component, wherein the combined flexible hose is made of highly elastic rubber material, and with a stepped sealing structure at the combined end, ensures a stable connection with the external negative pressure fan while achieving reliable sealing under dynamic negative pressure conditions through the silicone material of the sealing ring. This effectively prevents coal dust leakage during cleaning. Furthermore, the sealing ring, made of silicone material (hardness 60±5 Shore A), maintains elastic sealing within a temperature range of -20℃ to 80℃. The inner diameter of the combined end is designed as a standard 50mm interface, allowing for quick docking with the external negative pressure fan and ensuring airtightness when residual coal enters the collection system through the air inlet. The design of the connecting pipe component itself allows for quick assembly and disassembly of the cleaning components. When it is necessary to change the cleaning area or perform maintenance on the device, the connection can be quickly disconnected, reducing downtime and improving work efficiency. Simultaneously, the length of the connecting pipe component can be combined and spliced according to actual operational needs, satisfying both the flexibility of short-distance cleaning and the coverage of long-distance operations, ensuring effective operation in various scenarios. The device collects residual coal, preventing secondary pollution. Furthermore, the entire connecting pipe assembly is ergonomically designed, minimizing user burden during operation and enhancing overall practicality and operational comfort. The combined use of the cleaning and connecting pipe components enables efficient coal dust recovery while preventing secondary pollution. Moreover, the modular design standardizes the interfaces of the cleaning, support, operating lever, and connecting pipe components, allowing for independent replacement and maintenance, as well as functional expansion based on actual working conditions. This significantly improves equipment lifespan and maintenance efficiency. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main body of a negative pressure cleaning device for residual coal in a train carriage according to the present invention;
[0017] Figure 2 This is a schematic diagram of the cleaning component structure of a negative pressure cleaning device for residual coal in a train carriage according to this utility model;
[0018] Figure 3 This is a three-dimensional structural diagram of the mounting bracket components of a negative pressure cleaning device for residual coal in a train carriage according to this utility model;
[0019] Figure 4 This is a three-dimensional structural diagram of the operating lever component of a negative pressure cleaning device for residual coal in a train carriage according to this utility model;
[0020] Figure 5 This is a three-dimensional structural diagram of the connecting pipe component of a negative pressure cleaning device for residual coal in a train carriage, according to this utility model.
[0021] In the diagram: 1. Cleaning component; 101. Protective cover; 102. Roller brush; 103. Connecting shaft; 104. Air inlet; 105. Connector; 2. Mounting bracket component; 201. Support frame; 202. Direct drive motor; 203. Fixing seat; 204. Damping hinge; 205. Fastening bolt; 3. Operating lever component; 301. Damping telescopic rod; 302. Connecting seat; 303. Adjusting bolt; 304. Anti-slip handle; 4. Connecting pipe component; 401. Combined hose; 402. Combined end; 403. Sealing ring. Detailed Implementation
[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0023] like Figures 1 to 5 As shown, a negative pressure cleaning device for residual coal in a car body includes a cleaning component 1 and a mounting bracket component 2. The mounting bracket component 2 is connected to both sides of the cleaning component 1, and an operating lever component 3 is movably connected to the side of the mounting bracket component 2 away from the cleaning component 1. A connecting pipe component 4 is connected to the top center of the cleaning component 1. The mounting bracket component 2 includes a support frame 201, a direct drive motor 202, a fixed seat 203, a damping hinge 204, and a fastening bolt 205. The direct drive motor 202 is symmetrically installed at both ends of the support frame 201 near the cleaning component 1, and a fixed seat 203 is connected to the center of the support frame 201 near the operating lever component 3. A damping hinge 204 is connected to the side of the fixed seat 203 away from the support frame 201, and a fastening bolt 205 is installed through a horizontal thread at the axis of the damping hinge 204. The operating lever component 3 includes a damping telescopic rod 301, a docking seat 302, and an adjustment... The damping telescopic rod 301 has a connecting seat 302 integrally provided at one end near the mounting bracket component 2, and an adjusting bolt 303 is installed in the middle section of the damping telescopic rod 301. The surface of the damping telescopic rod 301 away from the connecting seat 302 is equipped with an anti-slip handle 304. The damping telescopic rod 301 and the connecting seat 302 are integrally structured. Holes for bolt installation are provided at four opposite corners of the connecting seat 302 away from the damping telescopic rod 301 and the damping hinge 204 away from the fixed seat 203. The direct drive motor 202 drives the connecting shaft 103 to drive the roller brush 102 to rotate at high speed, which can efficiently brush the residual coal on the inner wall of the car. At the same time, the support frame 201 forms an adjustable connection structure with the operating rod component 3 through the damping hinge 204. The user can adjust the angle between the support frame 201 and the operating rod component 3 by rotating the fastening bolt 205.
[0024] like Figures 1 to 5As shown, the cleaning component 1 includes a protective cover 101, a roller brush 102, a connecting shaft 103, an air inlet 104, and a connector 105. The roller brush 102 is horizontally mounted in the middle of the interior of the protective cover 101, and the connecting shaft 103 is connected to both ends of the roller brush 102. An air inlet 104 is located in the middle of the top of the protective cover 101, and a connector 105 is installed at the end of the air inlet 104 near the connecting pipe component 4. The air inlet 104 and the protective cover 101 are integrally formed, and the air inlet 104 and the connector 105 are fixedly connected. The power output end of the direct drive motor 202 is connected to the connecting shaft 103. The fixed base 203 adopts a front and rear clamping detachable structure and is connected to the support frame 201. 4 includes a combination hose 401, a combination end 402, and a sealing ring 403. Both ends of the combination hose 401 are equipped with combination ends 402, and the surface of the combination end 402 away from the combination hose 401 is equipped with a sealing ring 403. The combination end 402 and the connector 105 are connected in a detachable structure, and the sealing ring 403 is embedded in the side of the combination end 402. The structure of the connecting pipe component 4 itself can realize quick assembly and disassembly with the cleaning component 1. When it is necessary to change the cleaning area or maintain the device, the connection can be quickly disconnected. At the same time, the length of the connecting pipe component 4 can be combined and spliced according to the actual operation requirements, which can meet the flexibility of short-distance cleaning and adapt to the coverage of long-distance operation.
[0025] In summary, as Figures 1 to 5 As shown, when using the negative pressure cleaning device for residual coal in the carriage, the cleaning component 1, the mounting bracket component 2, the operating rod component 3 and the connecting pipe component 4 are first combined with each other. The power output ends of the direct drive motors 202 at both ends of the support frame 201 of the mounting bracket component 2 are accurately connected with the connecting shaft 103 in the cleaning component 1 so as to drive the roller brush 102 to rotate.
[0026] Next, align the docking seat 302 of the operating lever component 3 with the hole structure on the side of the damping hinge 204 away from the fixed seat 203 on the mounting bracket component 2, and fasten it with bolts. Adjust the operating lever component 3 to a suitable length by adjusting the adjusting bolt 303 in the middle section of the damping telescopic rod 301 to meet the operating habits and working height requirements of different users.
[0027] Then, connect the combined end 402 of the connecting pipe component 4 to the connector 105 at the air inlet 104 at the top of the cleaning component 1. Since the two are connected in a detachable structure and the side of the combined end 402 is embedded with a sealing ring 403, during the connection process, it is necessary to ensure that the sealing ring 403 and the connector 105 fit tightly to prevent coal dust leakage.
[0028] After the initial assembly of each component is completed, a comprehensive inspection of the entire device is carried out to check whether each connection is firm and whether components such as the direct drive motor 202 and the damping telescopic rod 301 are normal. After confirming that everything is correct, the device is placed in the car to be cleaned, and the direct drive motor 202 is turned on. The direct drive motor 202 drives the connecting shaft 103 to rotate at high speed, which causes the roller brush 102 to brush the residual coal on the inner wall of the car. At the same time, the other end of the connecting pipe component 4 is connected to the external negative pressure fan. Under the action of negative pressure, the residual coal brushed off enters the connecting pipe component 4 through the air inlet 104 and is finally collected into the corresponding collection system.
[0029] During the cleaning process, the user can adjust the angle between the support frame 201 and the operating rod component 3 by rotating the fastening bolt 205 according to the actual structure of the carriage and the cleaning needs. This allows the device to better adapt to the internal environment of the carriage and avoid structural interference with the corners of the carriage. When it is necessary to change the cleaning area, the connection between the connecting pipe component 4 and the cleaning component 1 can be quickly disconnected, the device can be moved to the new cleaning position and then reassembled to continue the cleaning operation. If the device malfunctions or needs maintenance, the standardized interface connection between the components allows for easy independent replacement and repair of individual components, improving maintenance efficiency. Through the above operation methods, the device achieves efficient and convenient cleaning of residual coal in the carriage.
[0030] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A negative pressure cleaning device for residual coal in a car body, comprising a cleaning component (1) and a mounting bracket component (2), characterized in that: The cleaning component (1) is connected to two sides of a mounting bracket (2), and the mounting bracket (2) is movably connected to the side away from the cleaning component (1) with an operating lever (3). The cleaning component (1) is connected to the top center with a connecting pipe (4). The mounting bracket (2) includes a support frame (201), a direct drive motor (202), a fixed seat (203), a damping hinge (204), and a fastening bolt (205). The support frame (201) is symmetrically mounted with the direct drive motor (202) at both ends on the side near the cleaning component (1). The support frame (201) is connected to the middle of the end near the operating lever (3) with a fixed seat (203). The fixed seat (203) is connected to the side away from the support frame (201) with a damping hinge (204). The damping hinge (204) is connected to the side with a horizontal thread through the axis of the damping hinge (204) with a fastening bolt (205).
2. The negative pressure cleaning device for residual coal in a car body according to claim 1, characterized in that, The cleaning component (1) includes a protective cover (101), a roller brush (102), a connecting shaft (103), an air inlet (104), and a connector (105). The roller brush (102) is horizontally installed in the middle of the interior of the protective cover (101), and the two ends of the roller brush (102) are connected to the connecting shaft (103). The air inlet (104) is provided in the middle of the top of the protective cover (101), and the connector (105) is installed at the end of the air inlet (104) near the connecting pipe component (4).
3. The negative pressure cleaning device for residual coal in a car body according to claim 2, characterized in that, The air inlet (104) and the protective cover (101) are integrated into one structure, and the air inlet (104) and the connector (105) are fixedly connected.
4. The negative pressure cleaning device for residual coal in a car body according to claim 2, characterized in that, The power output end of the direct drive motor (202) is connected to the connecting shaft (103), and the fixed seat (203) adopts a front and rear clamping detachable structure and is connected to the support frame (201).
5. The negative pressure cleaning device for residual coal in a car body according to claim 1, characterized in that, The operating lever component (3) includes a damping telescopic rod (301), a docking seat (302), an adjusting bolt (303), and an anti-slip handle (304). The damping telescopic rod (301) has a docking seat (302) integrally provided at one end near the mounting bracket component (2), and an adjusting bolt (303) is installed in the middle section of the damping telescopic rod (301). The anti-slip handle (304) is installed on the surface of the damping telescopic rod (301) away from the docking seat (302).
6. The negative pressure cleaning device for residual coal in a car body according to claim 5, characterized in that, The damping telescopic rod (301) and the docking seat (302) are integrated into one structure, and the docking seat (302) away from the damping telescopic rod (301) and the damping hinge (204) away from the fixed seat (203) are provided with holes for bolt installation at four opposite corners.
7. The negative pressure cleaning device for residual coal in a car body according to claim 2, characterized in that, The connecting pipe component (4) includes a combined hose (401), a combined end (402) and a sealing ring (403). Both ends of the combined hose (401) are equipped with combined ends (402), and a sealing ring (403) is installed on the side surface of the combined end (402) away from the combined hose (401).
8. The negative pressure cleaning device for residual coal in a car body according to claim 7, characterized in that, The combined end (402) and the connector (105) are connected in a detachable structure, and the sealing ring (403) is embedded in the side of the combined end (402).