Shaft part hoisting clamp
By designing shaft parts lifting fixtures, using the spacing structure of the upper and lower slide rails and the clamping mechanism of the jaws, the problem of difficulty in maintaining horizontal lifting of large shaft parts during machining is solved, and a more efficient and safe clamping process is achieved.
Patent Information
- Application Number
- CN202421860621.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-02
AI Technical Summary
In mechanical processing, when lifting large shaft parts with flanges at the end, it is difficult to accurately find the weight center of the parts, causing the parts to be tilted and lifted. The operator needs close-range assistance to maintain the level, which increases clamping complexity and safety risks.
A shaft-type parts lifting fixture is designed, including upper and lower slide rails parallel to each other. Through the clamping mechanism of the locking mechanism of the upper and lower slide blocks and the clamping mechanism of the jaws, the parts are lifted horizontally and prevented from falling.
It effectively improves the clamping efficiency and safety of parts on the machine tool, avoids the risk of operators controlling parts at close range, ensures horizontal lifting of parts, and simplifies the clamping process.
Smart Images
Figure CN222935038U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lifting tools, and particularly relates to a lifting fixture for shaft parts. Background Art
[0002] When machining large shaft parts with flanges at both ends as shown in Figure 2 、 Figure 3 , it is usually necessary to use a lifting tool to transfer the parts in order to install them on the three-jaw chuck of the machine tool. At present, a sling is often used to lift such parts. Since the weights at both ends of such parts are different, when fixing the sling, the center of gravity of the part cannot be accurately found. Therefore, after the part is lifted by the sling, it is usually in an inclined state and difficult to maintain horizontal. When docking the part with the three-jaw chuck, the operator needs to assist at a close distance to make the part area horizontal so that the end of the part can be smoothly inserted into the three-jaw chuck. This method not only makes the clamping work of the part more cumbersome, but also the operator is in contact with the suspended part at a close distance, which also poses a great risk of being hit. Summary of the Utility Model
[0003] To solve the deficiencies of the prior art, the utility model provides a lifting fixture for shaft parts, which can keep the parts in a horizontal lifting posture, prevent the parts from falling, effectively improve the clamping efficiency of the parts on the machine tool, and make the clamping process safer.
[0004] To achieve the purpose of the utility model, the following scheme is proposed:
[0005] A lifting fixture for shaft parts, comprising: an upper slide rail and a lower slide rail that are parallel to each other and connected at both ends, and there is a gap between the upper slide rail and the lower slide rail.
[0006] The ends of the upper slide rail and the lower slide rail are connected to a baffle, and the baffle extends a predetermined length downward along the bottom surface of the lower slide rail;
[0007] An upper slider is slidably sleeved on the upper slide rail, and a lifting lug is arranged at the top thereof;
[0008] A lower slider is slidably sleeved on the lower slide rail, and a clamping jaw is arranged on each of its two sides. The upper end of the clamping jaw is hinged to the lower slider, and the hinge axis is parallel to the lower slide rail. The lower ends of the two clamping jaws are bent towards the middle;
[0009] Both the upper slider and the lower slider are provided with locking mechanisms;
[0010] The upper ends of the two clamping jaws are connected by a screw rod for controlling the opening and closing of the lower ends of the two clamping jaws.
[0011] The beneficial effects of the present utility model are as follows: This solution is applicable to the hoisting of large shaft parts with flanges at both ends, and can horizontally lift parts with inconsistent center of gravity and dimension center, so as to facilitate the clamping of machine tools, and can effectively improve the efficiency and safety during clamping. Brief Description of the Drawings
[0012] The drawings described herein are only for illustrating the selected embodiments, rather than all possible implementation schemes, and are not intended to limit the scope of the present utility model.
[0013] Figure 1 The overall structural schematic diagram of the present application is shown.
[0014] Figure 2 The state schematic diagram of the present application when clamping a part is shown.
[0015] Figure 3 The bottom structural schematic diagram of the present application when clamping a part is shown.
[0016] Reference numerals in the drawings: upper slide rail - 1, lower slide rail - 2, baffle - 3, upper slider - 4, lifting lug - 41, lower slider - 5, clamping jaw - 6, connecting block - 61, screw rod - 7, worm gear strip - 81, worm - 82. Detailed Embodiment
[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will describe the embodiments of the present utility model in detail with reference to the drawings. However, the embodiments described herein are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0018] As Figures 1 to 3 shown, a hoisting fixture for shaft parts includes: an upper slide rail 1 and a lower slide rail 2 that are parallel to each other and connected at both ends, and there is a gap between the upper slide rail 1 and the lower slide rail 2.
[0019] Specifically, the ends of the upper slide rail 1 and the lower slide rail 2 are connected to a baffle 3, and the baffle 3 extends a predetermined length towards the bottom surface of the lower slide rail 2.
[0020] Specifically, an upper slider 4 is slidably sleeved on the upper slide rail 1, and a lifting lug 41 is provided at its top.
[0021] Specifically, a lower slider 5 is slidably sleeved on the lower slide rail 2, and a clamping jaw 6 is provided on each side thereof. The upper end of the clamping jaw 6 is hinged to the lower slider 5, and the axis of the hinge is parallel to the lower slide rail 2. The lower ends of the two clamping jaws 6 are both bent towards the middle.
[0022] Specifically, both the upper slider 4 and the lower slider 5 are provided with locking mechanisms for respectively fixing the upper slider 4 and the lower slider 5 on the upper slide rail 1 and the lower slide rail 2.
[0023] The upper ends of two clamping jaws 6 are connected by a screw rod 7 for controlling the opening and closing of the lower ends of the two clamping jaws 6.
[0024] During hoisting, the hook of the hoisting equipment is connected to the lifting lug 41, and the baffle 3 is arranged on the end face of the part flange; the two clamping jaws 6 are controlled to open by the screw rod 7, and the two clamping jaws 6 are respectively clamped on both sides of the outer circle of the part, so that the lower ends of the clamping jaws 6 are located below the part; the position of the lower slide block 5 on the lower slide rail 2 is adjusted, and the clamping jaws 6 and the baffle 3 are respectively abutted against the two end faces of the part flange, and the locking mechanism on the lower slide block 5 is used to fix the lower slide block 5 to prevent the clamping position between the clamping jaws 6 and the part from moving along the axis of the part and prevent the part from falling; the two clamping jaws 6 are controlled to close towards the middle by the screw rod 7, so that the clamping jaws 6 clamp the part; the part is slowly lifted by the hoisting equipment, so that the flange of the part supports on the ground, and then the position of the upper slide block 4 on the upper slide rail 1 is adjusted. The upper slide block 4 can be moved by knocking with a hammer, so that the upper slide block 4 moves to the center of gravity position of the part and the overall structure of the fixture, and then the locking mechanism on the upper slide block 4 is used to fix the upper slide block 4; then the part can be lifted horizontally; in this way, it can be avoided that the operator closely controls the horizontality of the part when clamping the part on the machine tool, which can not only effectively improve the clamping efficiency, but also reduce the safety hazard.
[0025] Preferably, as Figure 1 shown, the front ends of the upper slide rail 1 and the lower slide rail 2 are integrally connected structures, the ends of the upper slide rail 1 and the lower slide rail 2 have openings, and the ends of the upper slide rail 1 and the lower slide rail 2 are connected to the baffle 3 by screws to form a structure connected at both ends, so as to ensure the strength of the overall structure of the upper slide rail 1 and the lower slide rail 2.
[0026] More specifically, the upper slide rail 1 and the lower slide rail 2 are made of the same rod. A strip-shaped groove is formed by opening from one end of the rod to the other end, so as to form the upper slide rail 1 and the lower slide rail 2, and the strip-shaped groove is the interval between the upper slide rail 1 and the lower slide rail 2.
[0027] Preferably, as Figures 1 to 3As shown, the top surface of the upper slide rail 1 and the bottom surface of the lower slide rail 2 are both provided with a worm bar 81 arranged along the length direction, and the locking mechanism is a worm 82 respectively installed on the upper slider 4 and the lower slider 5, and the worm 82 is respectively engaged with the worm bar 81, and the worm 82 can be moved along the length direction of the worm bar 81 by rotating the worm 82, so as to adjust the position of the upper slider 4 on the upper slide rail 1, and adjust the position of the lower slider 5 on the lower slide rail 2, and the engagement of the worm 82 with the worm bar 81 has a self-locking function, which can effectively prevent the upper slider 4 and the lower slider 5 from moving, thereby synchronously realizing the functions of position adjustment and fixing; and after the parts are lifted, even if the upper slider 4 and the lower slider 5 have a large friction force with the upper slide rail 1 and the lower slide rail 2 respectively, the position of the upper slider 4 and the lower slider 5 can still be easily adjusted by rotating the worm 82. A disc is provided at the end of the worm 82 to facilitate manual rotation of the worm 82.
[0028] Preferably, Figure 1 As shown, the upper end of the clamping jaw 6 is provided with a connecting block 61, the axis of rotation is parallel to the axis of the hinge at the upper end of the clamping jaw 6, the two ends of the screw rod 7 have threads with opposite rotation directions, and the two ends of the screw rod 7 pass through the two connecting blocks 61 respectively. By rotating the screw rod 7, the two clamping jaws 6 can be controlled to close and open synchronously, so as to improve the clamping efficiency.
[0029] As another structure, the screw rod 7 is a single spiral structure, one end of which is rotatably connected to one of the claws 6. A strip hole is provided on the other claw 6, and the length direction of the strip hole is consistent with the length direction of the claw 6. The other end of the screw rod 7 passes through the strip hole, and a nut is provided on the screw rod 7. The nut is located on the outside of the claw 6 with the strip hole. In this way, the two claws 6 can realize the opening and closing function, and the screw rod 7 can also adapt to the changes in the angles of the two claws 6.
[0030] The above is only a preferred embodiment of the utility model, and does not mean that it is the only one or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.
Claims
1. A shaft parts lifting fixture, characterized in that: include: An upper slide rail (1) and a lower slide rail (2) which are parallel to each other and connected at both ends, and there is a gap between the upper slide rail (1) and the lower slide rail (2); The ends of the upper slide rail (1) and the lower slide rail (2) are connected to a baffle (3), and the baffle (3) extends toward the bottom surface of the slide rail (2) by a predetermined length; The upper sliding sleeve of the upper sliding rail (1) is provided with an upper sliding block (4), the top of which is provided with a lifting ear (41); The sliding sleeve on the lower slide rail (2) is provided with a lower slide block (5), and a clamping claw (6) is provided on both sides of the lower slide block. The upper ends of the clamping claws (6) are hinged to the lower slide block (5), and the axis of the hinge is parallel to the lower slide rail (2). The lower ends of the two clamping claws (6) are bent toward the middle. The upper slider (4) and the lower slider (5) are both provided with a locking mechanism; The upper ends of the two clamping claws (6) are connected via a screw rod (7) for controlling the opening and closing of the lower ends of the two clamping claws (6).
2. A shaft parts lifting fixture according to claim 1, characterized in that: The front ends of the upper slide rail (1) and the lower slide rail (2) are an integral connection structure, the ends of the upper slide rail (1) and the lower slide rail (2) have openings, and the ends of the upper slide rail (1) and the lower slide rail (2) are connected to the baffle (3) via screws.
3. The shaft parts lifting fixture according to claim 1 is characterized in that: The top surface of the upper slide rail (1) and the bottom surface of the lower slide rail (2) both have a worm bar (81) arranged along the length direction, and the locking mechanism is a worm (82) respectively mounted on the upper slider (4) and the lower slider (5), and the worm (82) is respectively meshed with the worm bar (81).
4. The shaft parts lifting fixture according to claim 3 is characterized in that: A disc is provided at the end of the worm (82).
5. The shaft parts lifting fixture according to claim 1, characterized in that: The upper end of the claw (6) is provided with a connecting block (61) for transmission, and the axis of rotation is parallel to the axis of hinge connection of the upper end of the claw (6). The two ends of the screw rod (7) have threads with opposite rotation directions, and the two ends of the screw rod (7) pass through the two connecting blocks (61) respectively.