Three-jaw lifting appliance for volute lifting
By designing a three-claw spreader for volute shell lifting, the volute shell is clamped with the inner side of the volute shell, the problem of skew and safety hazards during the lifting process is solved, and the accurate positioning and safety improvement of the lifting is achieved.
Patent Information
- Application Number
- CN202421201718.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-29
AI Technical Summary
When lifting a volute, the outer shape of the volute is irregular and the balance point cannot be accurately found, which can easily lead to the volute being skewed and fall. The outer edge of the volute being sharp, making it easy to cut the suspender, which poses a major safety hazard.
A three-claw spreader is designed, including a hanging column, a leg and a bidirectional threaded cylinder. The legs can be snapped to the inner side of the volute through articulation and threaded connections, and the volute is lifted through a crane connection hoist.
The spreader can accurately locate the center of gravity of the volute, avoid skew and fall, reduce potential dangers during the lifting process, and adapt to volutes of various sizes, improving the safety and efficiency of lifting.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of slings, in particular to a three-claw sling used for volute hoisting. Background Art
[0002] Lifting device is a device for lifting heavy objects in lifting machinery. The most commonly used lifting device for lifting objects is the hook. Others include lifting rings, lifting suction cups, clamps and forks. Lifting suction cups, clamps and forks can be used as special lifting devices on cranes for a long time, or as replaceable auxiliary lifting devices hung on the hook for temporary use. They are often used in warehouses and yards with multiple types of goods to improve work efficiency.
[0003] However, in the daily volute lifting process, chains or slings are usually used for lifting. Due to the irregular external shape of the volute, it is impossible to accurately find the balance point of the workpiece, which is prone to slipping. At the same time, the edges of the volute are relatively sharp, which can easily scratch or cut the slings, posing a great safety hazard.
[0004] In view of the above-mentioned problem that when a sling or chain is used to hoist the volute, due to the irregular outer shape of the volute, the balance point cannot be accurately found, which may easily cause the volute to tilt and fall. In addition, the outer edge of the volute is sharp, which may cut the sling, posing a major safety hazard. Therefore, a three-claw sling for volute hoisting is needed to solve the above-mentioned problems. Summary of the invention
[0005] The utility model aims at the problem that when a sling or chain is used to hoist the volute, due to the irregular outer shape of the volute, the balance point cannot be accurately found, which easily causes the volute to tilt and fall, and the outer edge of the volute is sharp, which may cut the sling, posing a great safety hazard. A three-claw sling for hoisting the volute is proposed to solve the above problems.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is a three-claw sling for volute hoisting, including a sling, a lifting ear is fixed on the top of the sling, a fixing ring is fixed on the upper outer side of the sling, a hinge seat is fixed on the outer side of the fixing ring, a leg is hinged on the hinge seat, a connecting block 1 is hinged on the middle part of the leg, a left-handed stud is fixed on the connecting block 1, a connecting block 2 is hinged on the lower part of the sling, a right-handed stud is fixed on the connecting block 2, the right-handed stud is threadedly connected to the left-handed stud through a bidirectional threaded barrel, and when in use By rotating the bidirectional threaded barrel, the right-handed stud and the left-handed stud move in opposite directions at the same time, and then the legs are expanded outward or contracted inward, so that the legs can be engaged with the inner side of the volute, and the volute is lifted by connecting the lifting ears through a crane. The overall structure of the lifting device is simple and easy to use. It can accurately locate the center of gravity of the volute and avoid the phenomenon of skewing of the volute during lifting, which greatly reduces the potential dangers during lifting. At the same time, it can also adapt to volutes of various sizes, with a wider range of applications and better practical effects.
[0007] Furthermore, a rotating handle is installed on the bidirectional threaded barrel, and the bidirectional threaded barrel can be rotated by rotating the handle.
[0008] Furthermore, the bottom of the leg is L-shaped and tilted upward by 3°-5°. The risk of the volute slipping can be reduced by the upward tilted bottom of the leg.
[0009] Furthermore, a rubber pad is bonded to the upwardly raised portion of the bottom of the leg, and the rubber pad further increases the friction of the leg and reduces the risk of the volute slipping.
[0010] Furthermore, the number of the legs is at least three, all the legs are distributed in a circular pattern, and the intervals between two adjacent legs are uniform.
[0011] Furthermore, the legs are heat-treated and coated with a wear-resistant coating on the surface. By using the heat-treated legs, the rigidity of the legs is improved and the load-bearing capacity of the legs is further improved.
[0012] The beneficial effects of the utility model are:
[0013] The hoist can realize the center positioning of the workpiece, ensure the accuracy of hoisting, reduce the time and energy of manual adjustment during hoisting, and speed up the hoisting process. Especially in the batch hoisting process, the automatic adjustment of the volute hoist has outstanding advantages. It can also adapt to the hoisting of volutes of various sizes, effectively maintain the balance of the workpiece, reduce the shaking during the hoisting process, and reduce the risk of workpiece slipping and sling damage during the hoisting process. At the same time, the hoist is simple and easy to operate, greatly improves the safety of volute hoisting, and saves the time of repeated hooking and unhooking, and the safety and efficiency are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] In the figure: 1. hanging column; 2. fixing ring; 3. lifting ear; 4. hinged seat; 5. supporting leg; 6. connecting block 1; 7. connecting block 2; 8. left-hand stud; 9. right-hand stud; 10. two-way threaded barrel; 11. rotating handle. DETAILED DESCRIPTION
[0017] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.
[0018] like Figure 1As shown, in this embodiment, the utility model proposes a three-claw sling for volute lifting, including a hanging column 1, a hanging ear 3 is fixed on the top of the hanging column 1, a fixing ring 2 is fixed on the upper outer side of the hanging column 1, a hinge seat 4 is fixed on the outer side of the fixing ring 2, a leg 5 is hinged on the hinge seat 4, the bottom of the leg 5 is L-shaped, and is tilted upward by 3°-5°. The bottom of the tilted leg 5 can reduce the risk of the volute slipping off, and the upward tilted part of the bottom of the leg 5 is bonded with a rubber pad, and the friction of the leg 5 is further increased by the rubber pad to reduce the risk of the volute slipping off. The number of the legs 5 is at least three, all the legs 5 are distributed in a circular shape, and the intervals between two adjacent legs 5 are uniform. The legs 5 are heat-treated and coated with a wear-resistant coating on the surface. The heat-treated legs 5 are used to improve the rigidity of the legs 5 and further improve the bearing capacity of the legs 5. The middle part of the legs 5 is hinged with a connecting block 1, a left-handed stud 8 is fixed on the connecting block 1, a connecting block 2 7 is hinged on the lower part of the hanging column 1, a right-handed stud 9 is fixed on the connecting block 2 7, the right-handed stud 9 and the left-handed stud 8 are threadedly connected through a two-way threaded tube 10, and a rotating handle 11 is installed on the two-way threaded tube 10, and the two-way threaded tube 10 is convenient to rotate by rotating the handle 11. When in use, the two-way threaded tube 10 is rotated to make the right-handed stud 9 and the left-handed stud 8 move in opposite directions at the same time, thereby expanding the support leg 5 outward or contracting it inward, so that the support leg 5 can be engaged with the inner side of the volute, and the volute is lifted by connecting the lifting ear 3 through a crane. The overall structure of the lifting device is simple, and it is easy to use. It can accurately locate the center of gravity of the volute, avoid the phenomenon of skewing of the volute during lifting, and greatly reduce the potential danger during lifting. At the same time, it can also adapt to volutes of various sizes, with a wider range of applications and better practical effects.
[0019] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A three-claw lifting device for lifting a volute, comprising a lifting column (1), characterized in that: A lifting ear (3) is fixed to the top of the suspension column (1), a fixing ring (2) is fixed to the upper outer side of the suspension column (1), a hinge seat (4) is fixed to the outer side of the fixing ring (2), a support leg (5) is hingedly connected to the hinge seat (4), a connecting block 1 (6) is hingedly connected to the middle of the support leg (5), a left-handed stud (8) is fixed to the connecting block 1 (6), a connecting block 2 (7) is hingedly connected to the lower part of the suspension column (1), a right-handed stud (9) is fixed to the connecting block 2 (7), and the right-handed stud (9) and the left-handed stud (8) are threadedly connected via a bidirectional threaded tube (10).
2. The three-claw lifting device for spiral casing lifting according to claim 1, characterized in that: A rotating handle (11) is mounted on the bidirectional threaded barrel (10).
3. The three-claw lifting device for spiral casing lifting according to claim 1, characterized in that: The bottom of the supporting leg (5) is L-shaped and tilted upward by 3°-5°.
4. The three-claw lifting device for spiral casing lifting according to claim 3, characterized in that: A rubber pad is bonded to the upwardly tilted portion of the bottom of the supporting leg (5).
5. The three-claw lifting device for spiral casing lifting according to claim 1, characterized in that: The number of the supporting legs (5) is at least three, all the supporting legs (5) are distributed in a circular pattern, and the intervals between two adjacent supporting legs (5) are uniform.
6. The three-claw lifting device for spiral casing lifting according to claim 1, characterized in that: The legs (5) are heat treated and coated with a wear-resistant coating on the surface.