Mechanical shaft gripping device for mechanical manufacturing
By using a ring structure formed by the intersecting clamping plates and jaws, combined with rubber rollers to increase friction, the problem of mechanical shafts falling off during the gripping process is solved, achieving stable gripping and anti-slip effects for the mechanical shafts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANCHONG VOCATIONAL & TECH COLLEGE
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-21
AI Technical Summary
Existing mechanical shaft gripping devices are prone to situations where the grippers fail to make contact with the mechanical shaft when gripping a small-diameter mechanical shaft, and the mechanical shaft is easily dislodged due to vibration during movement.
The clamping plates and claws form a ring structure, which, combined with the friction between the rubber roller and the side wall of the mechanical shaft, increases the contact area and friction, preventing the mechanical shaft from falling off.
It effectively prevents the mechanical shaft from slipping out of the clamping plate, avoids excessive clamping force from scratching the shaft surface, and improves the stability and safety of the mechanical shaft.
Smart Images
Figure CN224527238U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical shaft gripping technology, and in particular relates to a mechanical shaft gripping device for mechanical manufacturing. Background Technology
[0002] In mechanical transmission systems, mechanical shafts occupy a central position, bearing the important mission of supporting rotating parts and transmitting power and torque. In the mechanical manufacturing process, in order to perform various machining operations such as cutting on mechanical shafts, it is often necessary to use a gripping device to move the mechanical shaft, that is, to grab the mechanical shaft from the conveying device and place it on the machining equipment.
[0003] Existing mechanical shaft gripping devices typically use jaws to grasp the mechanical shaft from both sides. However, due to variations in shaft diameter, when the jaws grasp a smaller diameter shaft, a larger area of the jaws often fails to make contact with the shaft. Furthermore, mechanical vibrations are unavoidable during jaw movement, which can easily cause the mechanical shaft to detach from the gripping device. Utility Model Content
[0004] The purpose of this utility model is to provide a mechanical shaft gripping device for mechanical manufacturing. It has a simple structure and uses a combination of lifting and clamping to limit the mechanical shaft and prevent it from falling out of the clamping plate.
[0005] The aforementioned mechanical shaft gripping device for mechanical manufacturing includes a vertically arranged outer shell, a central shaft horizontally inserted inside the outer shell, two clamping plates hinged to the central shaft, a drive assembly for driving the two clamping plates to grip the mechanical shaft inside the outer shell, a jaw fixed to the lower end of each clamping plate, when the two clamping plates are gripping each other, the movable end of the jaw inserts into the other jaw, and fixing plates are installed at both ends of the central shaft, the lower end of each fixing plate is provided with a fixing assembly to press the mechanical shaft into the clamping plate.
[0006] Furthermore, the fixing assembly includes a telescopic rod, which is mounted on a fixing plate. Two connecting rods are obliquely fixed to the lower end of the telescopic rod. The two connecting rods have an "eight" shape structure. Rubber rollers are installed at the lower ends of the connecting rods, and the rubber rollers are pressed against the outer wall of the mechanical shaft.
[0007] Furthermore, the drive assembly includes two drive rods, which are respectively fixed to the upper end of the clamping plate. A rotating shaft is vertically installed at the top of the inner shell, and a threaded sleeve that is threadedly engaged with the rotating shaft is fitted on the rotating shaft. Connecting rods are provided between the two sides of the threaded sleeve and the movable end of the drive rod. The two ends of the connecting rods are respectively hinged to the drive rod and the threaded sleeve. A drive component for driving the rotating shaft to rotate is installed at the top of the inner shell.
[0008] Furthermore, a slide rod is mounted on the side wall of the clamping plate, and a top block is installed at one end of the slide rod located inside the clamping plate. A spring is fitted on the slide rod between the top block and the clamping plate. In its natural state, the top block is pressed against the outer wall of the mechanical shaft.
[0009] Furthermore, the lower ends of the left and right sidewalls of the outer shell are provided with notches that communicate with each other.
[0010] Furthermore, a connector is vertically fixed to the top of the outer casing.
[0011] Compared with the prior art, the present invention has the following beneficial effects: In this invention, under the action of the driving component, the two clamping plates are driven to rotate inward. Two grippers are inserted into the bottom of the mechanical shaft from both sides, clamping the mechanical shaft between the two clamping plates. The clamping plates continue to rotate, and the two grippers cross each other, forming a ring structure together with the two clamping plates. After the two grippers cross, they support the mechanical shaft and, together with the clamping of the two clamping plates, prevent the mechanical shaft from falling off due to insufficient clamping force. Under the action of the fixing component, the rubber roller is pushed down to the side wall of the mechanical shaft, increasing the contact area with the outer wall of the mechanical shaft and increasing the friction force, preventing the mechanical shaft from slipping out of the clamping plates. Compared with the prior art, the bottom of the mechanical shaft is supported by the clamping force provided by the clamping plates, avoiding excessive clamping force that scratches the surface of the mechanical shaft. The friction force provided by the rubber roller prevents the mechanical shaft from slipping out between the two clamping plates. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Left view of the middle panel; Figure 3 This is a diagram showing the usage state of this utility model; The components in the diagram are named as follows: 1. Outer shell; 2. Fixing plate; 3. Central shaft; 4. Rubber roller; 5. Spring; 6. Clamping plate; 7. Gripper; 8. Top block; 9. Slide rod; 10. Connecting rod; 11. Telescopic rod; 12. Drive rod; 13. Connecting rod; 14. Rotating shaft; 15. Threaded sleeve; 16. Drive component; 17. Connecting component; 18. Guide rail. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0014] Example 1 This embodiment describes a mechanical shaft gripping device for mechanical manufacturing, such as... Figures 1 to 3As shown, it includes a vertically arranged outer shell 1, and the outer shell 1 has a bottomless box structure; A central shaft 3 is horizontally inserted inside the outer casing 1. Through holes that communicate with each other are opened on the front and rear side walls of the outer casing 1. The front end of the central shaft 3 is inserted into the front through hole, and the rear end is inserted into the rear through hole. Bearings are installed in the through holes. The outer ring of the bearing is fixed to the hole wall of the through hole, and the end of the central shaft 3 is fixed to the inner ring of the bearing. Two clamping plates 6 are hinged to the central shaft 3 and are engaged in clamping. The upper end of the clamping plate 6 passes through the bottom of the outer shell 1. There are two clamping plates 6, both of which are arc-shaped. The two clamping plates 6 are installed opposite each other. By driving the two clamping plates 6 to rotate inward, the connecting shaft can be gripped. The lower end of the left drive rod 12 is fixed to the upper end of the right clamping plate 6, and the lower end of the right drive rod 12 is fixed to the upper end of the left clamping plate 6. The lower end of the drive rod 12 is fixed to the upper end of the clamping plate 6. The rotation of the drive rod 12 drives the clamping plate 6 to rotate, thereby clamping the mechanical shaft. A rotating shaft 14 is vertically installed at the top of the inner shell 1, and the upper end of the rotating shaft 14 is installed at the inner top of the shell 1. A threaded sleeve 15 is fitted on the rotating shaft 14 and is threaded to it. When the rotating shaft 14 rotates, it drives the threaded sleeve 15 to slide up and down along the length of the rotating shaft 14. Connecting rods 13 are provided between the two sides of the threaded sleeve 15 and the movable end of the drive rod 12. The two ends of the connecting rod 13 are respectively hinged to the drive rod 12 and the threaded sleeve 15. There are two connecting rods 13. The lower end of the left connecting rod 13 is hinged to the upper end of the left drive rod 12, and the upper end is hinged to the left side wall of the threaded sleeve 15. The right connecting rod 13 is hinged to the upper side of the drive rod 12. The lower end of rod 13 is hinged to the upper end of the right drive rod 12, and the upper end is hinged to the right side wall of threaded sleeve 15. When threaded sleeve 15 moves up and down, it pushes the two drive rods 12 to rotate through connecting rod 13, thereby controlling clamping plate 6 to grip the mechanical shaft. A drive component 16 for driving the rotating shaft 14 to rotate is installed on the inner top of housing 1. The drive component 16 is installed on the inner top of housing 1 and drives the rotating shaft 14 to rotate through drive component 16. This paragraph as a whole constitutes a drive assembly for driving the two clamping plates 6 to grip the mechanical shaft. When the drive assembly is in use, the rotating shaft 14 is driven to rotate through drive component 16. Through the threaded engagement of threaded sleeve 15 with rotating shaft 14, threaded sleeve 15 is driven to slide up and down along the length of rotating shaft 14. When threaded sleeve 15 moves, it controls the connecting rod 13 to change angle, thereby driving drive rod 12 to rotate around central axis 3, and driving clamping plate 6 to grip or release mechanical shaft. Each clamping plate 6 has a clamping claw 7 fixed at its lower end. When the two clamping plates 6 are clamped together, the movable end of the clamping claw 7 is inserted into the other clamping claw 7. There are two clamping claws 7, which are fixed at the lower end of the clamping plates 6 respectively. When the two clamping plates 6 are clamped together, the two clamping claws 7 cross each other, so that the two clamping plates 6 form a closed ring structure. While clamping the mechanical shaft, it also supports the mechanical shaft and prevents the mechanical shaft from falling off between the clamping plates 6. Two fixing plates 2 are installed at both ends of the central shaft 3, and the fixing plates 2 are fixed to the inner side wall of the outer shell 1. Telescopic rod 11 is installed on fixed plate 2, with its upper end fixed to the bottom of fixed plate 2. Telescopic rod 11 is a spring-loaded telescopic rod. After the mechanical shaft enters clamping plate 6, it pushes the lower end of telescopic rod 11 upwards, shortening its length. The spring supports the telescopic rod 11, pressing it against the outer wall of the mechanical shaft to improve stability. Two connecting rods 10 are obliquely fixed to the lower end of telescopic rod 11, forming an "eight" shape. Rubber rollers 4 are installed at the lower ends of both connecting rods 10, pressing against the outer wall of the mechanical shaft. The oblique fixing of the two connecting rods 10 to the lower end of telescopic rod 11 transforms one point of contact between the lower end of telescopic rod 11 and the side wall of the mechanical shaft into contact between the two rubber rollers 4 and the side wall of the mechanical shaft, increasing the contact area between them. Roller 4 can also increase the friction between itself and the side wall of the mechanical shaft, preventing the mechanical shaft from slipping between the two clamping plates 6. This section as a whole constitutes a fixing assembly that presses the mechanical shaft into the clamping plates 6. When the fixing assembly is in use, after the mechanical shaft enters between the two clamping plates 6, the side wall of the mechanical shaft contacts the rubber roller 4 and pushes the telescopic rod 11 upward. The telescopic rod 11 pushes the rubber roller 4 down to the side wall of the mechanical shaft, and the two rubber rollers 4 press on the mechanical shaft, increasing the contact area with the mechanical shaft and increasing the friction between it and the side wall of the mechanical shaft. Of course, in the fixing assembly, the connecting rod 10 can also be a spring. When the mechanical shaft pushes the rubber roller 4 upward, the connecting rod 10 undergoes elastic deformation, which increases the distance between the two rubber rollers 4 and makes them fit against the side wall of the mechanical shaft, further improving the stability of the mechanical shaft.
[0015] In this embodiment, in the initial state, the two clamping plates 6 are open. The outer casing 1 is moved above the mechanical shaft by an external conveying mechanism. The two clamping plates 6 are driven to rotate inward simultaneously by the drive assembly. The two grippers 7 are inserted into the bottom of the mechanical shaft from both sides, clamping the mechanical shaft between the two clamping plates 6. The clamping plates 6 continue to rotate, and the two grippers 7 cross each other, forming a ring structure together with the two clamping plates 6. While the two clamping plates 6 are clamping the mechanical shaft, the two grippers 7 cross and support the mechanical shaft, preventing it from falling off due to insufficient clamping force. After the mechanical shaft enters between the two clamping plates 6, the fixing assembly presses down to contact the outer wall of the mechanical shaft, increasing the friction between the mechanical shaft and the outer wall of the mechanical shaft, preventing the mechanical shaft from slipping out of the clamping plates 6.
[0016] like Figure 1 As shown, the lower ends of the left and right side walls of the outer shell 1 are provided with two notches that communicate with each other. The notches are respectively opened at the lower ends of the left and right side walls of the outer shell 1. The movement of the clamping plate 6 is avoided by opening the notches, so as to prevent the outer shell 1 from restricting the rotation stroke of the clamping plate 6.
[0017] like Figure 1As shown, a connector 17 is vertically fixed to the top of the outer shell 1. The connector 17 is installed on the top of the outer shell 1 and connects the outer shell 1 to the guide rail 18. The mechanical shaft being clamped is transported through the guide rail 18.
[0018] Example 2 This embodiment further illustrates the technology, such as Figure 1 As shown, a sliding rod 9 is installed on the side wall of the clamping plate 6. A through hole is opened on the side wall of the clamping plate 6, and the sliding rod 9 is horizontally installed in the through hole. The sliding rod 9 moves left and right along the depth direction of the through hole. A top block 8 is installed at one end of the slide rod 9 located inside the clamping plate 6, a top block 8 is installed at the right end of the left slide rod 9, and a top block 8 is installed at the left end of the right slide rod 9. The top blocks 8 are pressed against the side wall of the mechanical shaft to improve the stability of the mechanical shaft. A spring 5 is fitted on the slide rod 9 between the top block 8 and the clamping plate 6. One end of the spring 5 is installed on the top block 8, and the other end is installed on the inner side wall of the clamping plate 6. In its natural state, the top block 8 is pressed against the outer wall of the mechanical shaft by the spring 5.
Claims
1. A mechanical shaft gripping device for machinery manufacturing, comprising a vertically arranged outer shell (1), wherein a central shaft (3) is horizontally inserted inside the outer shell (1), characterized in that: Two clamping plates (6) are hinged on the central shaft (3) and are clamped together. A drive assembly for driving the two clamping plates (6) to clamp the mechanical shaft is provided inside the outer shell (1). The lower end of each clamping plate (6) is fixed with a claw (7). When the two clamping plates (6) are clamped together, the movable end of the claw (7) is inserted into the other claw (7). Fixing plates (2) are installed at both ends of the central shaft (3). The lower end of each fixing plate (2) is provided with a fixing assembly to press the mechanical shaft into the clamping plate (6).
2. The mechanical shaft gripping device for mechanical manufacturing according to claim 1, characterized in that: The fixing assembly includes a telescopic rod (11), which is mounted on a fixing plate (2). Two connecting rods (10) are fixed at the lower end of the telescopic rod (11) at an angle. The two connecting rods (10) are in a figure-eight shape. Rubber rollers (4) are installed at the lower end of each connecting rod (10). The rubber rollers (4) are pressed against the outer wall of the mechanical shaft.
3. The mechanical shaft gripping device for mechanical manufacturing according to claim 1, characterized in that: The drive assembly includes two drive rods (12), which are fixed to the upper end of the clamping plate (6). A rotating shaft (14) is vertically installed on the top of the outer shell (1). A threaded sleeve (15) is fitted on the rotating shaft (14) and is threadedly engaged with it. A connecting rod (13) is provided between the two sides of the threaded sleeve (15) and the movable end of the drive rod (12). The two ends of the connecting rod (13) are respectively hinged to the drive rod (12) and the threaded sleeve (15). A drive component (16) for driving the rotating shaft (14) to rotate is installed on the top of the outer shell (1).
4. The mechanical shaft gripping device for mechanical manufacturing according to claim 1, characterized in that: A slide rod (9) is mounted on the side wall of the clamping plate (6). A top block (8) is installed at one end of the slide rod (9) located inside the clamping plate (6). A spring (5) is fitted on the slide rod (9) between the top block (8) and the clamping plate (6). In its natural state, the top block (8) presses against the outer wall of the mechanical shaft.
5. The mechanical shaft gripping device for mechanical manufacturing according to claim 1, characterized in that: The lower ends of the left and right side walls of the outer shell (1) are provided with openings that allow communication between the inside and outside.
6. The mechanical shaft gripping device for mechanical manufacturing according to claim 1, characterized in that: A connector (17) is vertically fixed to the top of the outer shell (1).