A crown block track hoisting device

Abstract

The utility model belongs to the technical field of track hoist, especially relates to a crown block track hoisting device. Including the beam, the both ends of beam bottom are all fixed with the axle of hanging, two axle of hanging all are rotatably connected with first cantilever, second cantilever, and the end of first cantilever, second cantilever is equipped with first jaw, second jaw respectively, and first jaw, second jaw are all equipped with first clamping slot, second clamping slot respectively, and first jaw, second jaw are connected through bolt pair, and the top of beam is fixed with two lifting rings. The utility model firmly locks first jaw and second jaw together through bolt pair, makes the track be tightly wrapped in the closed space formed by first clamping slot and second clamping slot, and fundamentally solves the risk of track skidding and falling off in the hoisting process.

Description

Technical Field

[0001] This utility model belongs to the field of track lifting equipment technology, and in particular relates to a crane track lifting device. Background Technology

[0002] Overhead cranes, a common lifting and transporting equipment in steel plants, are widely used in material handling, assembly, and other operations. The track, as the fundamental support structure for overhead crane operation, directly impacts the normal operation of the crane and the smoothness of the entire production process through its installation quality and efficiency. Currently, overhead crane track installation typically employs methods such as multi-point binding with wire ropes or temporary welding of lifting lugs. These methods are cumbersome, inefficient, and may damage the track. Additionally, there is a type of slip-on lifting device that matches the track's outer contour; however, this device lacks an effective locking mechanism, making it prone to slippage during lifting and posing a safety risk of track detachment, which threatens on-site personnel and equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a crane rail hoisting device to solve the problems existing in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A crane rail hoisting device includes a lifting beam, with a lifting shaft fixed at both ends of the bottom of the lifting beam. A first cantilever and a second cantilever are rotatably connected to the two lifting shafts. The ends of the first cantilever and the second cantilever are respectively provided with a first clamp and a second clamp. The first clamp and the second clamp are respectively provided with a first slot and a second slot. The first clamp and the second clamp are bolted together by a bolt pair. Two lifting rings are fixed at the top of the lifting beam.

[0005] Furthermore, the central position of the first cantilever is rotatably connected to the hanging shaft, and both ends of the first cantilever have bends, with the bend directions at both ends of the first cantilever being symmetrical.

[0006] Furthermore, the central position of the second cantilever is rotatably connected to the lifting shaft, and both ends of the second cantilever have bends. The bending directions at both ends of the second cantilever are symmetrical, and the bending directions at both ends of the first and second cantilever on the same lifting shaft are opposite.

[0007] Furthermore, there are four first grippers, which are located at the two ends of the two first cantilever arms respectively. The first grippers extend downward and beyond the lowest end of the lifting shaft. The two first slots on the same first cantilever arm are symmetrical.

[0008] Furthermore, there are four second grippers, which are located at the two ends of the two second cantilever arms respectively. The second grippers extend downward and beyond the bottom of the suspension shaft. The two second slots on the same second cantilever arm are symmetrical. The opening directions of the first slot and the second slot on the same suspension shaft are opposite. The first slot and the second slot are both located on the same horizontal plane and beyond the bottom of the suspension shaft. The shape of the first slot and the second slot is adapted to the outer contour of the track.

[0009] Furthermore, the locking mechanism is a bolt pair, which passes through the first clamping jaw and is threaded through the second clamping jaw, or passes through the second clamping jaw and is threaded through the first clamping jaw.

[0010] This utility model has the following beneficial effects: 1. This utility model securely locks the first and second clamps together with bolts, so that the rail is tightly wrapped in the closed space formed by the first and second slots, fundamentally solving the risk of the rail slipping or falling off during hoisting.

[0011] 2. This utility model is simple to operate and highly efficient. Clamping and releasing can be completed simply by tightening or loosening the bolt pair. Compared with the traditional binding or welding methods, it greatly simplifies the operation process and improves the efficiency of rail installation and replacement.

[0012] 3. It can lift both long and relatively short rails, and can also lift two rails simultaneously, thereby improving lifting efficiency. When lifting a long rail, there are multiple clamping points, making lifting stable and less prone to slippage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of this utility model when hoisting a long track.

[0015] Figure 3 This is a schematic diagram of the structure of this utility model when hoisting two rails.

[0016] The components are: 1. lifting beam; 2. lifting shaft; 3. first cantilever; 4. second cantilever; 5. first clamp; 6. second clamp; 7. first slot; 8. second slot; 9. bolt pair; 10. lifting ring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] A crane rail hoisting device includes a lifting beam 1 that serves as the main load-bearing structure. The lifting beam 1 is typically made of structural steel to ensure sufficient strength and rigidity. A lifting shaft 2 is welded and fixed to each end of the bottom of the lifting beam 1.

[0019] Each lifting shaft 2 is rotatably connected to a first cantilever 3 and a second cantilever 4. Specifically, the first cantilever 3 and the second cantilever 4 have shaft holes at their central positions, and are rotatably connected to the lifting shaft 2 via bearings or bushings. The first cantilever 3 has bends at both ends, and the bends at both ends are rotationally symmetrical. Similarly, the second cantilever 4 also has rotationally symmetrical bends at both ends, and the bends of the first cantilever 3 and the second cantilever 4 on the same lifting shaft 2 are opposite in direction.

[0020] At each of the two ends of the first cantilever 3, a first gripper 5 is fixedly installed; at each of the two ends of the second cantilever 4, a second gripper 6 is fixedly installed. Both the first gripper 5 and the second gripper 6 extend downwards, with their bottom ends exceeding the lowest point of the lifting shaft 2, to ensure that the rail can be suspended in the air. The first gripper 5 has a first slot 7, and the second gripper 6 has a second slot 8. The openings of the first slot 7 and the second slot 8 are opposite each other and located at the same horizontal level. Their shapes precisely match the outer contour of the overhead rail (usually an I-beam) to achieve surface contact, increase friction, and reduce stress.

[0021] The locking mechanism uses bolt pair 9. This bolt pair 9 passes through the first jaw 5 and is threaded onto the second jaw 6 (or vice versa). By tightening the bolt pair 9, the first jaw 5 and the second jaw 6 are driven to move closer together, thereby clamping the rail placed between them. The first jaw 5 and the second jaw 6 on the same lifting shaft can have only one bolt pair 9, or each pair of first jaw 5 and second jaw 6 can have a bolt pair 9.

[0022] At the top of the lifting beam 1, two lifting rings 10 are symmetrically fixed for connecting the crane hook.

[0023] The working principle of this utility model is as follows: During hoisting operations, the device is first positioned above the rail, ensuring the rail web falls into the opening formed by the first and second slots 7 and 8, with the rail centered as much as possible. When the rail is short, one rail can be clamped between each pair of first cantilever 3 and second cantilever 4, improving hoisting efficiency. Then, the operator tightens the bolt pair 9, forcing the first and second clamps 5 and 6 to close, firmly holding the rail in the slots. Finally, the crane lifts the lifting ring 10, safely and smoothly hoisting the rail to the designated position. Throughout the process, the rail is reliably locked, eliminating the risk of detachment, and the hoisting is stable and efficient.

[0024] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention.

[0025] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A crane rail hoisting device, characterized in that, The device includes a lifting beam, with a lifting shaft fixed at both ends of the bottom of the lifting beam. A first cantilever and a second cantilever are rotatably connected to the two lifting shafts. The ends of the first cantilever and the second cantilever are respectively provided with a first clamp and a second clamp. The first clamp and the second clamp are respectively provided with a first slot and a second slot. The first clamp and the second clamp are connected by a locking mechanism. Two lifting rings are fixed at the top of the lifting beam.

2. The overhead rail hoisting device according to claim 1, characterized in that, The first cantilever is rotatably connected to the hanging shaft at its central position, and both ends of the first cantilever have bends, with the bends at both ends of the first cantilever being symmetrical.

3. The overhead rail hoisting device according to claim 2, characterized in that, The second cantilever is rotatably connected to the suspension shaft at its center. Both ends of the second cantilever have bends, and the bending directions at both ends of the second cantilever are symmetrical. The bending directions at both ends of the first and second cantilever on the same suspension shaft are opposite.

4. The overhead rail hoisting device according to claim 3, characterized in that, There are four first grippers, which are located at the two ends of the two first cantilever arms respectively. The first grippers extend downward and beyond the lowest end of the lifting shaft. The two first slots on the same first cantilever arm are symmetrical.

5. The overhead rail hoisting device according to claim 4, characterized in that, There are four second grippers, which are located at the two ends of the two second cantilever arms respectively. The second grippers extend downward and beyond the bottom of the suspension shaft. The two second slots on the same second cantilever arm are symmetrical. The opening directions of the first slot and the second slot on the same suspension shaft are opposite. The first slot and the second slot are both located on the same horizontal plane and beyond the bottom of the suspension shaft. The shape of the first slot and the second slot is adapted to the outer contour of the track.

6. The overhead rail hoisting device according to claim 1, characterized in that, The locking mechanism is a bolt pair, which passes through the first clamping jaw and is threaded through the second clamping jaw, or passes through the second clamping jaw and is threaded through the first clamping jaw.

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