Oil cylinder protective cover corner grinding device
By designing a grinding device with a ball float and conical spring A, the problem of poor adaptability of the existing device was solved, achieving precise grinding and stability of the edges and corners of the hydraulic cylinder guard, adapting to hydraulic cylinder guards of different specifications, and improving grinding efficiency and equipment service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-31
AI Technical Summary
The existing grinding equipment has poor adaptability and it is difficult to quickly change grinding tools or adjust the equipment to meet the grinding needs of the edges and corners of different types and specifications of hydraulic cylinder guards.
A grinding device comprising a ball bearing float and a conical spring A was designed. Through a synchronous pulley and synchronous belt transmission system, the grinding wheel can be precisely adjusted and moved stably. Combined with the high-speed rotation of the annular grinding component, it can adapt to the fine grinding of complex structures.
It achieves precise cutting and smoothing of the edges and corners of the hydraulic cylinder protective cover, avoiding equipment damage, improving the continuity and stability of grinding operations, and is highly adaptable, reducing the frequency of tool changes and equipment adjustments.
Smart Images

Figure CN224059402U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic cylinder processing technology, specifically a device for grinding the edges and corners of a hydraulic cylinder protective cover. Background Technology
[0002] Hydraulic cylinder protective covers effectively protect piston rods from contamination and damage caused by external forces such as dust. They can extend or compress with the components and can be used vertically or horizontally. They play a crucial role in ensuring the normal operation of hydraulic systems and extending the service life of hydraulic cylinders. Removing burrs and flash from the edges of the protective cover ensures smooth and flat edges, preventing scratches to operators or affecting the assembly accuracy between the protective cover and the hydraulic cylinder. This ensures consistent edge dimensions, meeting design drawing requirements (such as chamfer angles and radius of curvature), and improving protective performance and appearance quality.
[0003] Different types and specifications of hydraulic cylinder protective covers have different shapes and sizes of their edges and corners. Some existing grinding devices may only be suitable for specific types of protective covers, while for other specifications of protective covers, it is necessary to frequently change grinding tools or adjust equipment, which is cumbersome and has poor adaptability.
[0004] Therefore, this utility model provides a grinding device for the edges and corners of a hydraulic cylinder protective cover to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] This utility model provides a grinding device for the edges and corners of a hydraulic cylinder protective cover, which aims to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: It includes a mounting side plate, with an extended edge at the bottom of one side surface of the mounting side plate. A hinge plate A is fixedly mounted on the top of one side surface of the mounting side plate. A shaft is connected through the middle of one side surface of the hinge plate A. A first synchronous wheel is fixedly mounted at one end of the shaft that passes through the mounting side plate. A ball bearing float is mounted on one side of the first synchronous wheel via the shaft. A conical spring A is connected between the ball bearing float and the first synchronous wheel. One end of the conical spring A abuts against the surface of the first synchronous wheel. A grinding wheel is movably connected to one side surface of the ball bearing float. A nut is connected to the side of the grinding wheel away from the ball bearing float. A thread is provided at the end of the shaft away from the first synchronous wheel, and the thread on one side of the shaft extends into the nut.
[0009] As a preferred technical solution of this application, one end of the shaft is threaded to be adapted to the ball float plate, and a second synchronous pulley is movably connected to one side of the mounting side plate via a rotating shaft, and a synchronous belt is sleeved between the second synchronous pulley and the first synchronous pulley.
[0010] As a preferred technical solution of this application, a tensioning wheel is movably connected to one side surface of the mounting side plate near the middle of the first synchronous pulley, and the outer arc surface of the tensioning wheel is in contact with the surface of the synchronous belt.
[0011] As a preferred technical solution of this application, the mounting side plate is fixedly mounted with a hinge plate B by bolts on the side near the hinge plate A, and a support rod is fixedly mounted on one side surface of the hinge plate B, with a rectangular end on one end of the support rod.
[0012] As a preferred technical solution of this application, a threaded rod is connected through the upper surface of the rectangular end, and a pin is fixedly installed at the end of the threaded rod away from the rectangular end. A conical spring B is sleeved between the pin and the rectangular end.
[0013] As a preferred technical solution of this application, one end of the pin is movably connected to an annular grinding component via a rotating shaft. The outer arc surface of the annular grinding component fits against the outer arc surface of the grinding wheel, and the annular grinding component is placed on one side of the grinding wheel.
[0014] (III) Beneficial Effects
[0015] 1. By rotating the limiting nut and adjusting the contact distance between the grinding wheel and the workpiece along the thread axis using the ball float and conical spring A, the nut is tightened towards the grinding wheel to ensure precise cutting of burrs on the edge of the large-angle cylinder protective cover. Conical spring A is installed at the end of the ball float's movement path. Its conical structure design makes the spring stiffness increase with the compression. When the float moves beyond the set stroke, the spring first provides initial buffering force through the linear segment. As the compression increases, the conical segment spring coil gradually fits together, forming a non-linear damping effect, which can effectively avoid equipment damage caused by excessive float offset, while ensuring the continuity and stability of the grinding operation.
[0016] 2. When facing complex structures such as corners and gaps of components like hydraulic cylinder guards, the ring-shaped grinding component and pin can easily penetrate narrow areas for fine grinding. When the equipment is running, the ring-shaped grinding component rotates at high speed under the drive of the motor, and the abrasive on its surface comes into close contact with the corners of the guard. Through continuous cutting and grinding, the rough edges are ground smooth and flat, avoiding the need for frequent changes of grinding tools or adjustments to the equipment due to different shapes and sizes of the corners. Attached Figure Description
[0017] Figure 1 A schematic diagram of the overall structure of the mounting side plate of a hydraulic cylinder guard edge grinding device;
[0018] Figure 2 A schematic diagram of the structure of the back of the side plate installed in a grinding device for the edge and corner of a hydraulic cylinder guard;
[0019] Figure 3 A schematic diagram of the disassembly structure of the grinding wheel in a grinding device for grinding the edges and corners of a hydraulic cylinder guard.
[0020] Figure 4 This is a front view schematic diagram of the overall structure of a grinding device for the edges and corners of a hydraulic cylinder protective cover.
[0021] In the picture:
[0022] 1. Side plate; 101. Extended edge; 2. Hinge plate A; 3. Shaft; 4. First synchronous pulley; 5. Ball bearing float; 6. Conical spring A; 7. Grinding wheel; 8. Nut; 9. Second synchronous pulley; 10. Synchronous belt; 11. Tensioner; 12. Hinge plate B; 13. Support rod; 131. Rectangular end; 14. Threaded rod; 15. Pin; 16. Conical spring B; 17. Annular grinding piece. Detailed Implementation
[0023] 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.
[0024] This utility model provides a grinding device, such as Figures 1 to 4 As shown, the device includes a mounting side plate 1. An extension edge 101 is provided at the bottom of one side surface of the mounting side plate 1. A hinge plate A2 is fixedly mounted on the top of one side surface of the mounting side plate 1. A shaft 3 is passed through the middle of one side surface of the hinge plate A2. A first synchronous wheel 4 is fixedly mounted on one end of the shaft 3, which passes through the mounting side plate 1. A ball bearing float 5 is mounted on one side of the first synchronous wheel 4 via the shaft 3. A conical spring A6 connects the ball bearing float 5 and the first synchronous wheel 4. One end of the conical spring A6 abuts against the surface of the first synchronous wheel 4. A grinding wheel is movably connected to one side surface of the ball bearing float 5. The grinding wheel 7 is connected to a nut 8 on the side away from the ball float 5. The shaft 3 is threaded at the end away from the first synchronous wheel 4. The thread on one side of the shaft 3 passes through the nut 8. The thread at one end of the shaft 3 is adapted to the ball float 5. The second synchronous wheel 9 is movably connected to the extension edge 101 of the mounting side plate 1 via a rotating shaft. A synchronous belt 10 is sleeved between the second synchronous wheel 9 and the first synchronous wheel 4. A tension wheel 11 is movably connected to the surface of the mounting side plate 1 near the middle of the first synchronous wheel 4. The outer arc surface of the tension wheel 11 is in contact with the surface of the synchronous belt 10.
[0025] The mounting side plate 1 is designed for quick and easy installation in any grinding area via positioning slots and locking bolts. The drive motor output drives the second synchronous pulley 9 to rotate clockwise at a constant speed. Its toothed surface meshes with the synchronous belt 10, causing the annular synchronous belt 10 to produce linear horizontal movement. During this transmission process, the tension of the synchronous belt 10 is transmitted to the first synchronous pulley 4 through the belt teeth, causing it to rotate synchronously around the central axis. This, in turn, drives the coaxially fixed shaft 3 to rotate. The trapezoidal thread on the surface of the shaft 3 and the built-in nut 8 of the ball float 5 form a helical drive. When the shaft 3 rotates clockwise, the ball float 5 produces a horizontal linear movement to the left under the action of the thread helix angle; conversely, it moves to the right. During the movement, the grinding wheel 7 installed on one side of the float is fixed by an adjustable clamp. The operator can adjust the contact distance between the grinding wheel 7 and the workpiece by rotating the limit nut 8 along the thread axis. When the nut 8 is tightened towards the grinding wheel 7, it ensures precise cutting of the burrs on the edge of the large-angle cylinder protective cover. A conical spring A6 is set at the end of the movement path of the ball float 5. Its conical structure design makes the spring stiffness increase with the compression. When the float moves beyond the set stroke, the spring first provides initial buffer force through the linear segment. As the compression increases, the conical segment spring coil gradually fits together, forming a nonlinear damping effect, which can effectively avoid equipment damage caused by excessive float offset, while ensuring the continuity and stability of the grinding operation.
[0026] A hinge plate B12 is fixedly installed on the side of the mounting plate 1 near the hinge plate A2 by bolts. A support rod 13 is fixedly installed on one side surface of the hinge plate B12. One end of the support rod 13 has a rectangular end 131. A threaded rod 14 is connected through the upper surface of the rectangular end 131. A pin 15 is fixedly installed on the end of the threaded rod 14 away from the rectangular end 131. A conical spring B16 is sleeved between the pin 15 and the rectangular end 131. One end of the pin 15 is movably connected to an annular grinding component 17 through a rotating shaft. The outer arc surface of the annular grinding component 17 fits against the outer arc surface of the grinding wheel 7. The annular grinding component 17 is placed on one side of the grinding wheel 7.
[0027] On the middle of the surface of the mounting side plate 1, the hinge plate B12 stably fixes the support rod 13 to the main body of the equipment. The rectangular end 131 of the support rod 13, with the hinge point as the axis, fixes the pin 15 to the surface. When the pin 15 is subjected to pressure from above, the conical spring B16 absorbs the pressure energy through its own elastic deformation, converting the rigid impact into a flexible buffer, thus avoiding damage to the equipment components caused by excessive instantaneous impact force.
[0028] The other end of the pin 15 is connected to the annular grinding part 17 via a rotating shaft. The annular grinding part 17 can rotate around the rotating shaft and adjust the grinding angle with the swing of the pin 15. When facing complex structures such as the corners and gaps of components such as hydraulic cylinder guards, it can easily penetrate narrow areas for fine grinding. When the equipment is running, the annular grinding part 17 rotates at high speed under the drive of the motor. The abrasive on its surface is in close contact with the corners of the guard. Through continuous cutting and grinding action, the rough edges are ground smooth and flat.
[0029] External pressure is evenly transmitted to pin 15 through receiving rod 13, and then buffered and adjusted by conical spring B16, finally acting on the ring grinding part 17 with a stable force, so that the grinding force can meet the process requirements of removing burrs and smoothing the surface, while avoiding wear or deformation of the parts due to excessive pressure.
[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A device for polishing the corners of a ram guard, comprising a mounting side plate (1), characterized in that: The bottom of the side surface of the installation side plate (1) is provided with an extension edge (101), the top of the side surface of the installation side plate (1) is fixedly provided with a hinged disc A (2), the middle of the side surface of the hinged disc A (2) is provided with a shaft rod (3) penetratingly connected, one end of the shaft rod (3) penetratingly installed in the installation side plate (1) is fixedly provided with a first synchronous wheel (4), one side of the first synchronous wheel (4) is provided with a ball floating plate (5) through the shaft rod (3), the ball floating plate (5) and the first synchronous wheel (4) are connected with a conical spring A (6), one end of the conical spring A (6) abuts against the surface of the first synchronous wheel (4), the side surface of the ball floating plate (5) is movably connected with a polishing wheel (7), the side of the polishing wheel (7) away from the ball floating plate (5) is connected with a nut (8), the end of the shaft rod (3) away from the first synchronous wheel (4) is provided with a thread, the thread on one side of the shaft rod (3) penetrates into the nut (8).
2. The oil cylinder boot corner polishing device of claim 1, wherein: The end of the shaft rod (3) is matched with the ball floating plate (5), the extension edge (101) on one side of the installation side plate (1) is movably connected with a second synchronous wheel (9) through a rotating shaft, the second synchronous wheel (9) and the first synchronous wheel (4) are sleeved with a synchronous belt (10).
3. The oil cylinder boot corner polishing apparatus of claim 2, wherein: The middle of the side surface of the installation side plate (1) close to the first synchronous wheel (4) is movably connected with a tensioning wheel (11), the outer arc surface of the tensioning wheel (11) is attached to the surface of the synchronous belt (10).
4. The oil cylinder boot corner polishing apparatus of claim 1, wherein: The side of the installation side plate (1) close to the hinged disc A (2) is fixedly provided with a hinged disc B (12) through a bolt, the side surface of the hinged disc B (12) is fixedly provided with a receiving rod (13), one end of the receiving rod (13) is provided with a rectangular end (131).
5. The oil cylinder boot corner polishing apparatus of claim 4, wherein: The upper surface of the rectangular end (131) is penetratingly connected with a threaded rod (14), one end of the threaded rod (14) away from the rectangular end (131) is fixedly provided with a pin rod (15), the pin rod (15) and the rectangular end (131) are sleeved with a conical spring B (16).
6. A device for chamfering the corners of a protective cover for a hydraulic cylinder according to claim 5, characterized in that: One end of the pin rod (15) is movably connected with an annular polishing part (17) through a rotating shaft, the outer arc surface of the annular polishing part (17) is attached to the outer arc surface of the polishing wheel (7), the annular polishing part (17) is placed on one side of the polishing wheel (7).