Hydraulic expanding forceps for use in confined spaces
By introducing replaceable expansion and cleaning components into the hydraulic spreader, the problems of equipment wear and operational instability in confined spaces have been solved, thereby improving equipment stability and cleaning efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUZHOU VOCATIONAL TECH COLLEGE
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional hydraulic expansion equipment is prone to wear and tear in confined spaces, is unstable in operation, and is difficult to clean, affecting its service life and operational accuracy.
It employs replaceable expansion and cleaning components, including wear-resistant coated expansion plates, sliding support structures, and magnetic cleaning devices, to achieve stable expansion and efficient cleaning.
Extend equipment lifespan, improve operational stability and cleaning efficiency, reduce maintenance costs, and ensure operational accuracy and safety.
Smart Images
Figure CN224441946U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of disaster relief and maintenance technology, and in particular to a hydraulic spreader that can be used in confined spaces. Background Technology
[0002] Hydraulic spreaders are tools that use hydraulic power to expand objects. They are commonly used in rescue and demolition scenarios and can be used to pry open and separate objects in various complex environments.
[0003] Traditional hydraulic expansion equipment used in confined spaces generally suffers from several limitations when facing complex and restricted operating environments: First, key working components are prone to severe wear under high-intensity expansion operations, leading to a shortened overall service life of the equipment. Conventional designs often require the replacement of worn parts or the entire assembly, resulting in high maintenance costs and low efficiency. Second, when operating in confined spaces, the limited space makes it difficult to provide effective support, causing the equipment to sway and become unstable during expansion due to uneven force or reaction forces, affecting the accuracy and control performance of the operation, and potentially even causing danger. Third, the expansion operation area is often accompanied by the accumulation of debris or obstacles, which not only affects the movement and positioning of the equipment itself, but also interferes with subsequent operating procedures, requiring additional manpower and time for cleanup. Utility Model Content
[0004] To overcome the technical defects of the existing technology, this utility model provides a hydraulic expansion clamp that can be used in confined spaces, which has a compact structure and can effectively clean the expansion area.
[0005] The technical solution adopted by this utility model is as follows: it includes a mobile trolley and a mounting frame placed in a confined space. The bottom of the mounting frame is fixedly installed on the top of the mobile trolley. One side of the mounting frame is provided with a mounting groove and a limiting slide groove. A motor is fixedly installed inside the mounting groove. A sliding frame that slides and engages with the limiting slide groove is fixedly installed on the output shaft of the motor. A mounting plate is fixedly installed on one side of the sliding frame. Replaceable expansion components are fixedly installed on the top and bottom of the mounting plate. A fixing groove is provided at the other end of the mounting plate. A cleaning component is fixedly installed inside the fixing groove.
[0006] Preferably, in order to install the replaceable expansion assembly, the mounting plate is provided with a square groove and a circular groove at the top and bottom, and the replaceable expansion assembly is fixedly installed inside the square groove and the circular groove.
[0007] Preferably, to enhance the adaptability and service life of the spreader, the replaceable spreader assembly includes a hydraulic unit, a first spreader plate for spreader application, and a second spreader plate with a wear-resistant coating on its outer side. The bottom of the hydraulic unit is fixedly installed inside the circular groove, the inner side of the first spreader plate is fixedly installed on the top of the hydraulic unit, and the inner side of the second spreader plate is fixedly installed on the outer side of the first spreader plate.
[0008] Preferably, in order to better adjust the position of the first expansion plate, a sliding rod is fixed inside the square groove, and a moving block is slidably arranged on the outside of the sliding rod.
[0009] Preferably, to enhance the stability of the structure, support columns are hinged to the top of the movable block and the inner side of the first expansion plate, respectively.
[0010] Preferably, in order to clear obstacles in a confined space, the clearing assembly includes a first magnet and a second magnet. The first magnet is fixedly installed inside the fixing groove, one side of the second magnet is magnetically fixed to one side of the first magnet, and a connecting frame is fixed to the other side of the second magnet. A push plate is fixedly installed at the other end of the connecting frame.
[0011] Preferably, in order to enhance the service life and wear resistance of the push plate, the working surface of the push plate is covered with a wear-resistant layer.
[0012] Preferably, to avoid damage to surrounding objects during use, the edges of the push plate are designed with rounded corners.
[0013] The beneficial effects of this utility model are as follows: efficient expansion operation is achieved through the hydraulic power in the replaceable expansion assembly; the wear-resistant coating on the key contact surface effectively reduces the wear on the second expansion plate; the second expansion plate can also be replaced separately, significantly extending the overall service life of the equipment; and the linkage support structure composed of the slide rod, the moving block and the support column hinged to it provides additional stability during the expansion process, ensuring uniform force transmission and resisting reaction force, thus enhancing the stability and control precision of the expansion process. At the same time, the cleaning assembly can effectively clean up debris or obstacles in the expansion area, reducing the risk of jamming of the moving trolley and improving cleaning efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram showing the connection between the mobile trolley and the mounting frame of this utility model;
[0016] Figure 3 This is a schematic diagram showing the connection between the mounting plate, replaceable expansion assembly, cleaning assembly, motor, and sliding frame of this utility model.
[0017] Figure 4 This is a schematic diagram showing the disassembled structure of the replaceable expansion component of this utility model.
[0018] Figure 5 This is a schematic diagram of the cleaning component structure of this utility model.
[0019] Explanation of reference numerals in the attached drawings: 1. Moving trolley; 2. Mounting frame; 3. Mounting plate; 4. Replaceable expansion assembly; 401. Hydraulic unit; 402. First expansion plate; 403. Second expansion plate; 404. Support column; 405. Slide rod; 406. Moving block; 5. Cleaning assembly; 501. First magnet; 502. Second magnet; 503. Connecting frame; 504. Push plate; 6. Mounting groove; 7. Limiting slide groove; 8. Motor; 9. Sliding frame; 10. Square groove; 11. Circular groove. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings:
[0021] like Figures 1-5 As shown, this embodiment provides a hydraulic spreader for use in confined spaces, including a mobile trolley 1 and a mounting frame 2 placed inside the confined space. The bottom of the mounting frame 2 is fixedly mounted on the top of the mobile trolley 1. The mobile trolley 1 can drive the spreader to move, facilitating operation in different environments. One side of the mounting frame 2 is provided with a mounting groove 6 and a limiting slide groove 7. A motor 8 is fixedly mounted inside the mounting groove 6. A sliding frame 9, which is slidably engaged inside the limiting slide groove 7, is fixedly mounted on the output shaft of the motor 8. A mounting plate 3 is fixedly mounted on one side of the sliding frame 9. Replaceable spreader components 4 are fixedly mounted on the top and bottom of the mounting plate 3. A fixing groove is provided at the other end of the mounting plate 3. A cleaning component 5 is fixedly mounted inside the fixing groove.
[0022] The mounting plate 3 has a square groove 10 and a circular groove 11 at the top and bottom. The replaceable expansion component 4 is fixedly installed inside the square groove 10 and the circular groove 11, which facilitates the use of the replaceable expansion component 4.
[0023] In actual use, the operator can start the motor 8, so that the output shaft of the motor 8 drives the sliding frame 9 to slide inside the limiting slide groove 7. The sliding frame 9 can drive the mounting plate 3 to move synchronously, which facilitates the flexible adjustment of the position of the replaceable expansion component 4. This allows the replaceable expansion component 4 to open or separate different positions in a narrow space. At the same time, the cleaning component 5 can be used to clean up debris or obstacles in the expansion operation area, ensuring the smooth movement and positioning of the mobile trolley 1, effectively reducing the risk of the mobile trolley 1 getting stuck and improving cleaning efficiency.
[0024] As a technical optimization solution of this utility model, specifically as follows: Figure 4 As shown, the replaceable expansion assembly 4 includes a hydraulic unit 401, a first expansion plate 402 for expansion, and a second expansion plate 403 with a wear-resistant coating on its outer side. The bottom of the hydraulic unit 401 is fixedly installed inside the circular groove 11. The inner side of the first expansion plate 402 is fixedly installed on the top of the hydraulic unit 401. The inner side of the second expansion plate 403 is fixedly installed on the outer side of the first expansion plate 402. A slide rod 405 is fixed inside the square groove 10. The slide rod 405 has a limiting and guiding function for the moving block 406. The moving block 406 is slidably arranged on the outer side of the slide rod 405. The top of the moving block 406 and the inner side of the first expansion plate 402 are respectively hinged to support columns 404.
[0025] In use, the operator can control the hydraulic unit 401 to expand the first expansion plate 402 and the second expansion plate 403. Since the outer side of the second expansion plate 403 is coated with a wear-resistant coating, it effectively resists wear during expansion, extending the service life of the replaceable expansion assembly 4. Simultaneously, the first expansion plate 402 and the second expansion plate 403 are respectively provided with threaded openings and threaded grooves, allowing for fixed installation using bolts. When the second expansion plate 403 is severely worn, the operator can replace it individually without replacing the entire replaceable expansion assembly 4, reducing maintenance costs. During expansion, the moving block 406 can slide on the sliding rod 405, and the support column 404 can adjust its angle as the moving block 406 slides, providing stable support for the first expansion plate 402 and the second expansion plate 403, enhancing the operational stability of the expansion clamp in confined spaces.
[0026] As a technical optimization solution of this utility model, specifically as follows: Figure 5 As shown, the cleaning component 5 includes a first magnet 501 and a second magnet 502. The first magnet 501 is fixedly installed inside the fixing groove. One side of the second magnet 502 is magnetically fixed to one side of the first magnet 501. A connecting frame 503 is fixed to the other side of the second magnet 502. The connecting frame 503 can connect the second magnet 502 and the push plate 504 together. The other end of the connecting frame 503 is fixedly installed with the push plate 504. The working surface of the push plate 504 is covered with a wear-resistant layer, and the edge of the push plate 504 is designed with rounded corners.
[0027] In use, before or during the expansion operation, the operator can assemble and disassemble the connecting frame 503 and the push plate 504 using the magnetic attraction between the first magnet 501 and the second magnet 502. This allows the second magnet 502 to move the connecting frame 503 and the push plate 504. The push plate 504 can push and clear debris or obstacles in the expansion operation area, ensuring the smooth movement of the moving trolley 1. At the same time, the working surface of the push plate 504 is covered with a wear-resistant layer, which improves the service life of the push plate 504. Furthermore, the edges of the push plate 504 are designed with rounded corners to avoid damage to surrounding objects during use, further improving the safety of the expansion forceps.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.
Claims
1. A hydraulic spreader for use in confined spaces, comprising a mobile trolley (1) placed inside the confined space and a mounting bracket (2), wherein the bottom of the mounting bracket (2) is fixedly mounted on the top of the mobile trolley (1), characterized in that: The mounting bracket (2) has a mounting groove (6) and a limiting slide groove (7) on one side. A motor (8) is fixedly installed inside the mounting groove (6). A sliding frame (9) that is slidably engaged inside the limiting slide groove (7) is fixedly installed on the output shaft of the motor (8). A mounting plate (3) is fixedly installed on one side of the sliding frame (9). Replaceable expansion components (4) are fixedly installed on the top and bottom of the mounting plate (3). A fixing groove is provided at the other end of the mounting plate (3). A cleaning component (5) is fixedly installed inside the fixing groove.
2. The hydraulic expanding forceps according to claim 1, wherein: The mounting plate (3) is provided with a square groove (10) and a circular groove (11) at the top and bottom, and the replaceable expansion component (4) is fixedly installed inside the square groove (10) and the circular groove (11).
3. The hydraulic expanding forceps according to claim 2, wherein: The replaceable expansion assembly (4) includes a hydraulic unit (401), a first expansion plate (402) for expansion, and a second expansion plate (403) with a wear-resistant coating on its outer side. The bottom of the hydraulic unit (401) is fixedly installed inside the circular groove (11), the inner side of the first expansion plate (402) is fixedly installed on the top of the hydraulic unit (401), and the inner side of the second expansion plate (403) is fixedly installed on the outer side of the first expansion plate (402).
4. The hydraulic expanding forceps for use in a narrow space according to claim 3, wherein: A slide rod (405) is fixed inside the square groove (10), and a moving block (406) is slidably arranged on the outside of the slide rod (405).
5. The hydraulic expanding forceps according to claim 4, wherein: The top of the movable block (406) and the inner side of the first expansion plate (402) are respectively hinged with support columns (404).
6. The hydraulic expanding forceps for use in a narrow space according to claim 1, wherein: The cleaning component (5) includes a first magnet (501) and a second magnet (502). The first magnet (501) is fixedly installed inside the fixing groove. One side of the second magnet (502) is magnetically fixed to one side of the first magnet (501). A connecting frame (503) is fixed to the other side of the second magnet (502). A push plate (504) is fixedly installed at the other end of the connecting frame (503).
7. The hydraulic expanding forceps according to claim 6, wherein: The working surface of the push plate (504) is covered with a wear-resistant layer.
8. The hydraulic expanding forceps for use in a narrow space according to claim 7, wherein: The edge portion of the push plate (504) is designed with rounded corners.