A self-locking clamp for lifting single rail
By designing a single rail lift to use self-locking fixture, the problems of clamp sliding and safety hazards in conventional lifting methods are solved, and safety and efficiency improvements are achieved during rail lifting.
Patent Information
- Application Number
- CN202421497982.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-27
AI Technical Summary
During the disassembly and assembly and lifting of rails, conventional scissor fixtures are prone to cause clamps to slide, which is labor-intensive and has safety hazards.
A single rail lift is designed using a self-locking clamp, which is clamped at both ends of the rail by two clamps, and is hung on the lifting equipment using a wire rope. The clamp is equipped with an L-shaped crimp plate, a step shaft, an anti-slip shaft sleeve and a clamp bolt to ensure that the rail does not slide during the lifting process.
It effectively avoids the slippage of the grip during rail lifting, reduces labor intensity and safety risks, and improves the safety and efficiency of lifting.
Smart Images
Figure CN222729280U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the inspection and replacement of rails in the metallurgical machinery industry, track construction technology in the transportation field, etc., and specifically is a self-locking clamp for hoisting a single rail. Background Art
[0002] In the process of engineering construction and equipment maintenance, the disassembly, assembly and lifting of rails, which is the most labor-intensive task in rail construction, is often involved. In conventional scissor-type clamp lifting, the clamping point will slide if the lifting force is slightly unloaded. When the rails are lifted by tying two steel ropes, there is a problem that the rails need to be flipped into place when they are lifted to the installation position, and the steel ropes need to be pulled out and removed. Not only is the labor-intensive, but the safety risks are also high. Utility Model Content
[0003] In view of the above problems, the utility model provides a self-locking clamp for lifting a single rail, which is used to solve the problems of large labor workload, easy sliding of clamping points and potential safety hazards in conventional lifting methods.
[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:
[0005] A self-locking clamp for lifting a single rail, characterized in that it includes two clamp bodies, the two clamps are respectively clamped at both ends of the rail, the two clamps are respectively hung on lifting equipment using wire ropes, the clamp includes two turning plates, the two turning plates are arranged in parallel, the two parallel turning plates are L-shaped, the upper ends of the turning plates are horizontally connected by a hanging shaft, the turning points are horizontally connected by a stepped shaft, the stepped shaft is sleeved with an anti-slip shaft sleeve, and clamping bolts are respectively provided on both sides of the lower ends of the two turning plates.
[0006] It also includes a lifting ring, which is rotatably mounted on the upper end of the turning plate through a lifting shaft.
[0007] The beneficial effects of the utility model are:
[0008] (1) When the utility model is used, two self-locking clamps are clamped at both ends of the rail respectively, and the clamping bolts at the lower end of the L-shaped turning plate are tightened. During lifting, the weight of the rail itself generates a lever principle, and the stepped shaft and the clamping bolts are pressed tightly against the rail. The stepped shaft is sleeved with an anti-slip sleeve, which can effectively prevent the lifting point from sliding or unbalanced slipping during the rail lifting operation.
[0009] (2) The utility model uses a steel wire rope to pass through a rotatable lifting ring installed on the upper end of a self-locking clamp, thereby reducing sliding wear of the steel wire rope during the lifting and loading process. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is the front view of the utility model;
[0011] Figure 2 It is the right view of the utility model;
[0012] Figure 3 This is a schematic diagram of the use of the utility model.
[0013] Reference numerals: lifting ring 1, turning plate 2, hanging shaft 3, anti-slip sleeve 4, stepped shaft 5, clamping bolt 6 DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.
[0015] like Figure 2 , Figure 3 As shown, it includes two clamp bodies, the two clamps are respectively clamped at both ends of the rail, and the two clamps are respectively suspended on the lifting equipment using wire ropes. The clamp includes two turning plates, the two turning plates are arranged in parallel, and the two parallel turning plates are L-shaped. The upper ends of the turning plates are horizontally connected by a hanging shaft, and the turning points are horizontally connected by a stepped shaft. The stepped shaft is covered with an anti-slip shaft sleeve, and clamping bolts are respectively provided on both sides of the lower ends of the two turning plates.
[0016] like Figure 1 As shown, it also includes a lifting ring 1, which is rotatably installed on the upper end of the turning plate 2 through a lifting shaft 3.
[0017] When the utility model is used, if there is open space at both ends of the track, the clamp suspension shaft 3 and the stepped shaft 5 are placed parallel to the rail surface, and relative to the center of gravity of the rail, the suspension shaft 3 is placed outside the plane formed by the stepped shaft 5 and the clamping bolt 6, and the clamp is inserted into the rail head, and the clamp is pushed horizontally to the suspension point position on one side. In the same way, another clamp is inserted into the rail from the other end of the rail, and placed at the suspension point position on the other side, relative to the vertical center line of the cross section of the rail, and the clamping bolts 6 are checked and adjusted, so that the clamping bolts 6 on both sides are screwed in symmetrically until the top clearance between the clamping bolts 6 on both sides is slightly larger than the thickness of the web reinforcement of the rail. Then, lock a pair of lifting ropes on the lifting rings 1 of the two lifting devices, hang the other end of the lifting ropes on the hook, and command the lifting. When the lifting wire rope is subjected to force, the clamp step shaft 5 falls on the rail surface, the clamp automatically rotates, the step shaft 5 and the clamping bolt 6 lock the rail surface, and the anti-skid sleeve 4 has an anti-skid effect on the rail. Moreover, as the lifting force increases, the locking resistance increases.
[0018] In the case of no open space at both ends of the track, such as when lifting the overhead crane to replace the tracks one by one, the clamp cannot be inserted from the end. At this time, the clamping bolts 6 on both sides can be adjusted to make the top clearance of the clamping bolts 6 on both sides larger than the maximum width of the rail surface. Pay attention to the turning direction of the clamp, insert the clamp onto the rail, and then adjust the top clearance of the clamping bolts 6 on both sides until it is slightly larger than the thickness of the rail web reinforcement. The clamp installation is completed and the rail lifting is carried out in the same way as above.
[0019] For high-altitude and ultra-high-altitude operations with higher safety requirements, the 6 pairs of clamping bolts on both sides can be adjusted to press against the two sides of the rail web reinforcement to hold the rails in place. In actual use, two sets of clamps can also be made and used alternately.
[0020] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.
Claims
1. A self-locking clamp for hoisting a single rail, characterized by: The invention comprises two clamp bodies, the two clamps are clamped at two ends of the rail respectively, the two clamps are respectively suspended on the lifting equipment by steel wire ropes, the clamp comprises two turning plates (2), the two turning plates (2) are arranged in parallel, the two parallel turning plates (2) are L-shaped, the upper ends of the turning plates (2) are horizontally connected by a hanging shaft (3), the turning points are horizontally connected by a stepped shaft (5), the stepped shaft (5) is sleeved with an anti-slip shaft sleeve (4), and the lower ends of the two turning plates (2) are respectively provided with clamping bolts (6) on both sides.
2. The self-locking clamp for lifting a single rail according to claim 1, characterized in that: It also comprises a lifting ring (1), wherein the lifting ring (1) is rotatably mounted on the upper end of the turning plate (2) via a lifting shaft (3).