Anti-falling device for replacing steel wire rope of crown block
By designing a fall-proof device including limiting plates and wire clamping plates, the safety risks and labor intensity of the trolley when replacing the wire ropes are solved, and the safety and efficiency of the replacement process are improved.
Patent Information
- Application Number
- CN202421357957.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-14
AI Technical Summary
There are high safety risks when replacing wire ropes in Tianche. Traditional methods are time-consuming and labor-intensive, and the existing protective devices are insufficiently designed to effectively prevent wire ropes from being detached or broken.
A type of anti-fall device when changing the wire rope in the sky car is designed, including a limiting plate and a wire jamming plate. The limiting plate is equipped with a limiting groove and installation hole. The wire jamming plate is connected through a rotating shaft and a bearing seat. The spacing between the jamming plates is smaller than the diameter of the wire rope, and the wire rope is automatically jammed to prevent falling.
It reduces the labor force of employees to pull wire ropes, reduces the safety risk of wire rope falling, and improves the construction efficiency and safety of replacing wire ropes.
Smart Images
Figure CN222574115U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of auxiliary fixing tools for replacing steel wire ropes of overhead cranes, in particular to a falling prevention device for replacing steel wire ropes of overhead cranes. Background Art
[0002] When replacing the wire rope of an overhead crane, the operation height involved is usually relatively high, and the wire rope is an important component for load-bearing and lifting, so its replacement process has a high safety risk. Therefore, the application of anti-fall devices in this process is particularly important, mainly reflected in the following aspects:
[0003] 1. Safety risks and hidden dangers: The traditional way of replacing wire ropes often relies on manual operation, such as using the old rope to slowly replace the new rope, which is not only time-consuming and laborious, but also prone to safety hazards such as personnel falling, wire rope derailment, and wire rope breakage during high-altitude operations. Once an accident occurs, it not only threatens the life safety of the operator, but also causes serious damage to the personnel and equipment below.
[0004] 2. Labor intensity and efficiency: Since replacing wire ropes usually requires the collaboration of multiple people, the labor intensity is high and the entire process is inefficient, which increases the manpower and time costs of the enterprise. Especially in large industrial environments, frequent wire rope replacement operations have a more significant impact on production efficiency.
[0005] 3. Technical limitations: Early protective measures, such as the use of simple curved guards and bolt-on guards, were insufficiently designed to effectively prevent the dangers caused by the wire rope being de-grooved or broken. These devices often lacked effective response mechanisms to emergency situations.
[0006] 4. Equipment wear and maintenance: During the long-term use of the overhead crane, wear of components such as wire ropes and fixed pulleys is inevitable, especially under heavy loads or harsh environments.
[0007] Therefore, how to ensure safe operation when replacing the wire rope while reducing potential damage to other parts of the overhead crane has become a technical challenge. The process of replacing the wire rope during operation requires the cooperation of multiple people, especially when fixing the wire rope head, a strong person needs to stand on the trolley body and pull the wire rope by hand, while another person fixes the wire rope head. When manually installing the wire rope, the wire rope surface is lubricated with grease, so it will fall when pulled; it needs to be replaced multiple times. If the personnel do not cooperate well, the wire rope will fall to the ground, posing a major safety hazard.
[0008] Therefore, it is urgent to design an anti-falling device when replacing the wire rope of the overhead crane to solve the problem that the existing overhead crane replaces the wire rope by manually pulling the wire rope head on the overhead crane, which wastes manpower and material resources and has safety hazards. Utility Model Content
[0009] In view of the problems existing in the prior art, the utility model aims to provide a device for preventing a crane from falling when replacing a steel wire rope.
[0010] The technical solution adopted by the utility model to solve its technical problems is: a device for preventing a crane from falling when replacing a wire rope, comprising a limit plate and a wire clamp, wherein the limit plate is provided with a limit groove, the wire rope passes through the limit groove, the wire clamps are rotatably installed on both sides of the limit groove, and the spacing between the wire clamps is less than the diameter of the wire rope.
[0011] Specifically, the limit plate is provided with a plurality of mounting holes, and the limit plate is fixed to the upper part of the wire rope passing hole of the overhead crane by inserting bolts into the mounting holes.
[0012] Specifically, a limiting groove is arranged on one side of the limiting plate, the width of the limiting groove is greater than the diameter of the wire rope, and two sets of bearing seats are fixed on the limiting plates on both sides of the limiting groove.
[0013] Specifically, the two groups of bearing seats on the same side of the limiting groove are rotatably connected to a rotating shaft, the middle part of the rotating shaft is fixedly connected to a wire clamp, and the wire clamp swings through the bearing seat.
[0014] Specifically, the front portion of the wire pallet is arranged to be tilted upward.
[0015] Specifically, the steel wire rope passes through the limiting groove and between the two steel wire clamping plates.
[0016] The utility model has the following beneficial effects:
[0017] The utility model discloses a device for preventing the overhead crane from falling when replacing the wire rope. The wire rope is put between two wire clamps, and when the wire rope rises, the two wire clamps are pulled up. When the wire rope needs to be lowered, the two wire clamps automatically clamp the wire rope, thereby reducing the labor of employees pulling the wire rope and preventing the wire rope from falling to the ground due to poor coordination among employees. The safety risk of replacing the wire rope during construction is reduced, and work efficiency and safety are improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a top view of the anti-fall device when the overhead crane replaces the wire rope.
[0019] Figure 2 This is the front view of the anti-fall device when the overhead crane replaces the wire rope.
[0020] Figure 3 It is a structural diagram of the wire rope rising between two wire pallets.
[0021] In the figure: 1-limiting plate; 2-limiting groove; 3-wire clamping plate; 4-rotating shaft; 5-bearing seat; 6-mounting hole; 7-wire rope. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely further describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Embodiment 1:
[0024] like Figure 1-Figure 3 As shown, a device for preventing a crane from falling when replacing a wire rope comprises a limit plate 1, a limit groove 2, a wire clamp 3, a rotating shaft 4 and a bearing seat 5. The limit plate is provided with a limit groove 2, and a wire rope 7 passes through the limit groove 2. The wire clamps 3 are rotatably installed on both sides of the limit groove 2. The spacing between the wire clamps 3 is smaller than the diameter of the wire rope 7, so that the two wire clamps 3 are pulled up when the wire rope 7 rises. If the wire rope 7 needs to be lowered, the two wire clamps 3 will automatically clamp the wire rope 7.
[0025] Four mounting holes 6 are provided on the limit plate 1, and the limit plate 1 is fixed to the upper part of the wire rope 7 through the hole of the overhead crane by inserting bolts into the mounting holes 6. When the overhead crane is operating normally, the lifting and lowering action of the wire rope 7 is not affected. If the wire rope 7 needs to be replaced, the wire rope 7 can be pulled between the two wire clamps 3 in the limit groove 2.
[0026] A limiting groove 2 is provided on one side of the limiting plate 1 , the width of the limiting groove 2 is greater than the diameter of the steel wire rope 7 , and two sets of bearing seats 5 are fixed on the limiting plates 1 on both sides of the limiting groove 2 .
[0027] The two groups of bearing seats 5 on the same side of the limiting groove 1 are rotatably connected to the rotating shaft 4, and the middle part of the rotating shaft 4 is fixedly connected to the wire clamping plate 3, and the wire clamping plate 3 swings through the bearing seat 5.
[0028] The front part of the wire clamping plate 3 is tilted upwards, so that when the wire rope 7 rises, the two wire clamping plates 3 on both sides of the limiting groove 1 are pulled up.
[0029] The steel wire rope 7 passes through the limiting groove 2 and between the two steel wire clamping plates 3 .
[0030] Embodiment 2: Working principle of the anti-fall device when the overhead crane replaces the wire rope using the structural form of embodiment 1.
[0031] The utility model calculates the size through on-site measurement, selects a suitable steel plate for cutting, and manufactures a small tool for replacing the steel wire rope through welding, which is fixed on the vehicle body, thereby reducing the labor of employees pulling the steel wire rope.
[0032] Through on-site demonstration through video playback, a small tool for replacing the wire rope is made and fixed on the vehicle body. When fixing the wire rope head, the wire rope 7 is placed between the two wire clamps 3. When the wire rope 7 rises, the two wire clamps 3 are pulled up. If the wire rope 7 needs to be lowered, the two wire clamps 3 will automatically clamp the wire rope 7, which reduces the labor of employees pulling the wire rope 7 and prevents the wire rope 7 from falling to the ground due to poor coordination among personnel, thereby reducing the safety risk of replacing the wire rope 7 during construction and improving work efficiency and safety.
[0033] The present utility model is not limited to the above-mentioned implementation modes, and anyone should be aware of the structural changes made under the inspiration of the present utility model. Any technical solutions that are the same or similar to the present utility model fall within the protection scope of the present utility model.
[0034] The technology, shape and structure parts not described in detail in the present invention are all known technologies.
[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A device for preventing a crane from falling when replacing a steel wire rope, characterized in that: It comprises a limit plate and a wire clamping plate, wherein the limit plate is provided with a limit groove, the wire rope passes through the limit groove, the wire clamping plates are rotatably installed on both sides of the limit groove, and the spacing between the wire clamping plates is smaller than the diameter of the wire rope.
2. The anti-falling device for replacing the steel wire rope of the overhead crane according to claim 1 is characterized in that: The limit plate is provided with a plurality of mounting holes, and the limit plate is fixed to the upper part of the wire rope passing hole of the overhead crane by inserting bolts into the mounting holes.
3. The anti-falling device for replacing the steel wire rope of the overhead crane according to claim 1, characterized in that: A limiting groove is arranged on one side of the limiting plate, the width of the limiting groove is greater than the diameter of the wire rope, and two sets of bearing seats are fixed on the limiting plates on both sides of the limiting groove.
4. The anti-falling device for replacing the steel wire rope of the overhead crane according to claim 3 is characterized in that: The two groups of bearing seats on the same side of the limiting groove are rotatably connected to a rotating shaft, and the middle part of the rotating shaft is fixedly connected to a wire clamping plate, and the wire clamping plate swings through the bearing seat.
5. The anti-falling device for replacing the steel wire rope of the overhead crane according to claim 4, characterized in that: The front part of the wire clip is arranged to be inclined upward.
6. The anti-falling device for replacing the steel wire rope of the overhead crane according to claim 1, characterized in that: The steel wire rope passes through the limiting groove and between the two steel wire clamping plates.