A wire rope end fixing device

Abstract

This utility model discloses a wire rope end fixing device, comprising a housing, a connecting shaft, a connecting shaft fixing block, and an adjusting screw. The housing has a cavity extending along its length. The connecting shaft fixing block is slidably disposed within the cavity and can slide back and forth along the length of the housing. The connecting shaft is rotatably disposed within the connecting shaft fixing block and perpendicular to the side of the housing. The sides of the housing on both sides of the cavity have grooves matching the connecting shaft. Both ends of the connecting shaft are slidably disposed within these grooves. One end of the housing has a through hole matching the adjusting screw, and the inner wall of the through hole has an internal thread. The adjusting screw is disposed within the through hole at the end of the housing and threadedly connected to the housing. One end of the adjusting screw is rotatably connected to the connecting shaft fixing block. This utility model allows for adjustment of the wire rope length, enables free swinging of the wire rope, prevents rotation of the wire rope, and facilitates lubrication.

Description

Technical Field

[0001] This utility model relates to a fixing device, and more particularly to a wire rope end fixing device, belonging to the technical field of lifting equipment. Background Technology

[0002] Currently, crane wire ropes are typically fixed to the machine directly using wedge sleeves. The wire rope passes through the wedge sleeve, which is then directly fixed to the skew mechanism. This fixing method has several drawbacks, including ineffective compensation for initial elongation, a large workload and difficulty in controlling precision when replacing the wire rope, difficulty in ensuring the levelness of the lifting equipment, and poor adaptability. As errors accumulate, the wire rope becomes unable to cope with various changes that occur during use (such as elongation, wear, and deformation). Even minor deviations can accumulate into serious consequences or even cause safety accidents, requiring replacement of the wire rope to resolve the issue, which significantly increases replacement time and labor costs.

[0003] Therefore, it is necessary to design a wire rope end fixing device that has a certain adjustment margin, allows the wire rope to swing at a certain angle, and compensates for the above-mentioned errors, so that the hoisting mechanism can maintain a good working condition during operation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a wire rope end fixing device to realize the adjustment of the wire rope length.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A wire rope end fixing device includes a housing, a connecting shaft, a connecting shaft fixing block, and an adjusting screw. The housing has a cavity extending along its length. The connecting shaft fixing block is slidably disposed within the cavity and can slide back and forth along the length of the housing. The connecting shaft is rotatably disposed within the connecting shaft fixing block and perpendicular to the side of the housing. The sides of the housing on both sides of the cavity have grooves matching the connecting shaft. Both ends of the connecting shaft are slidably disposed within the grooves on both sides of the housing. One end of the housing has a through hole matching the adjusting screw, and the inner wall of the through hole has an internal thread. The adjusting screw is disposed within the through hole at the end of the housing and threadedly connected to the housing. One end of the adjusting screw is rotatably connected to the connecting shaft fixing block.

[0006] Furthermore, the connecting shaft is rotatably mounted within the connecting shaft fixing block via a spherical bearing.

[0007] Furthermore, a wedge-shaped sleeve connecting plate is provided at the other end of the housing, and a connecting hole is opened on the wedge-shaped sleeve connecting plate.

[0008] Furthermore, one end of the adjusting screw is connected to the connecting shaft fixing block via a transition connecting block. The connecting shaft fixing block has a first blind hole on the side facing the adjusting screw. One end of the transition connecting block matches the first blind hole and is embedded in the first blind hole of the connecting shaft fixing block. An annular groove is formed on the outer side of one end of the transition connecting block along the circumferential direction. Several limiting screws are provided in the first blind hole of the connecting shaft fixing block and are locked in the annular groove of the transition connecting block to limit the axial position of the transition connecting block in the first blind hole. The other end of the transition connecting block has a second blind hole that matches the adjusting screw. The end of the adjusting screw is inserted into the second blind hole of the transition connecting block and is threadedly connected to the second blind hole.

[0009] Furthermore, the end of the adjusting screw is locked and fixed to the second blind hole by a positioning bolt.

[0010] Furthermore, the two ends of the connecting shaft are provided with detachable bushings at the contact points with the sliding grooves on both sides of the housing.

[0011] Furthermore, a locking nut is fitted on the outside of the adjusting screw, and one side of the locking nut abuts against one end face of the housing.

[0012] Furthermore, the other end of the adjusting screw is provided with a hexagonal screw head.

[0013] Compared with the prior art, this utility model has the following advantages and effects: This utility model provides a wire rope end fixing device that can adjust the length of the wire rope, allow the wire rope to swing freely, prevent the wire rope from rotating, and facilitate lubrication. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a wire rope end fixing device according to the present invention.

[0015] Figure 2 This is a cross-sectional view along line AA of a wire rope end fixing device according to this utility model. Detailed Implementation

[0016] To elaborate on the technical solutions adopted by this utility model to achieve the intended technical objectives, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Furthermore, the technical means or technical features in the embodiments of this utility model can be replaced without creative effort. The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1 and Figure 2As shown, this utility model discloses a wire rope end fixing device, comprising a housing 1, a connecting shaft 2, a connecting shaft fixing block 3, and an adjusting screw 4. The housing 1 has a cavity 5 arranged along its length. The cross-section of the cavity 5 matches the connecting shaft fixing block 3. The connecting shaft fixing block 3 is slidably disposed within the cavity 5 of the housing 1 and can slide back and forth along the length of the housing 1. The connecting shaft 2 is rotatably disposed within the connecting shaft fixing block 3 and is perpendicular to the side of the housing 1. The sides of the housing 1 on both sides of the cavity 5 have grooves 6 that match the connecting shaft 2. The two ends of the connecting shaft 2 are slidably disposed within the grooves 6 on both sides of the housing 1. When the connecting shaft fixing block 3 slides within the cavity 5 of the housing 1, the connecting shaft 2 slides synchronously with it. The design of the grooves 6 on both sides of the housing 1 allows the connecting shaft 2 to slide synchronously with the connecting shaft fixing block 3, and also limits the degree of freedom of the connecting shaft 2 along the circumferential direction of the housing 1's cross-section, ensuring that the connecting shaft 2 always remains perpendicular to the sides of the housing 1. One end of the housing 1 has a through hole that matches the adjusting screw 4, and the inner wall of the through hole is provided with an internal thread. The adjusting screw 4 is set in the through hole at the end of the housing 1 and is threadedly connected to the housing 1. One end of the adjusting screw 4 is rotatably connected to the connecting shaft fixing block 3. By rotating the adjusting screw 4, the position of the adjusting screw 4 relative to the through hole at the end of the housing 1 is changed through the threaded connection relationship between the adjusting screw 4 and the through hole at the end of the housing 1, thereby realizing the adjustment of the wire rope length.

[0018] The connecting shaft 2 is rotatably mounted in the connecting shaft fixing block 3 via the spherical bearing 7. Through the spherical bearing 7, the connecting shaft 2 can not only rotate within the connecting shaft fixing block 3 around its own axis, but also swing along the plane restricted by the sliding grooves 6 on both sides when the wire rope swings. Since the sliding grooves 6 on both sides restrict a plane, it can only swing in that plane and cannot rotate.

[0019] The other end of the housing 1 is provided with a wedge-shaped sleeve connecting plate 8, and the wedge-shaped sleeve connecting plate 8 has a connecting hole 9 for connecting the wire rope end wedge sleeve.

[0020] One end of the adjusting screw 4 is connected to the connecting shaft fixing block 3 via a transition connecting block 10. The connecting shaft fixing block 3 has a first blind hole on the side facing the adjusting screw 4. One end of the transition connecting block 3 matches and is embedded in the first blind hole of the connecting shaft fixing block 3. An annular groove 11 is formed on the outer side of one end of the transition connecting block 3, arranged circumferentially. Several limiting screws are installed in the first blind hole of the connecting shaft fixing block 3, locking within the annular groove 11 to limit the axial position of the transition connecting block 3 within the first blind hole. However, the transition connecting block 3 can still rotate circumferentially within the first blind hole. The other end of the transition connecting block 3 has a second blind hole that matches the adjusting screw 4. The end of the adjusting screw 4 is inserted into the second blind hole of the transition connecting block 3 and threadedly connected to it, thus achieving a fixed connection between the adjusting screw 4 and the transition connecting block 3. The end of the adjusting screw 4 is locked and fixed to the second blind hole by the positioning bolt 12. The positioning bolt 12 limits the rotational freedom of the adjusting screw 4 and the second blind hole, thereby preventing the adjusting screw 4 from falling out of the second blind hole.

[0021] Removable bushings 13 are provided at the contact points between the two ends of the connecting shaft 2 and the sliding grooves 6 on both sides of the housing 1. The connecting shaft 2 is prone to wear when sliding in the sliding grooves 6. The wear of the connecting shaft 2 itself can be avoided by the protection of the removable bushings 13. The bushings 13 can be replaced after they are worn to a certain extent.

[0022] A locking nut 14 is fitted on the outside of the adjusting screw 4, with one side of the locking nut 14 abutting against one end face of the housing 1. When the wire rope length needs to be adjusted by adjusting the screw 4, the locking nut 14 is rotated to the left to separate it from the end face of the housing 1. After the adjusting screw 4 has adjusted the wire rope length, the locking nut 14 is adjusted in the opposite direction to abut against the end face of the housing 1, thus forming a double nut structure with the internal thread of the blind hole at the end of the housing 1, preventing the threads of the adjusting screw 4 from loosening.

[0023] The other end of the adjusting screw 4 is provided with a hexagonal screw head, which makes it easy to rotate and adjust the adjusting screw 4 using tools.

[0024] This utility model provides a wire rope end fixing device that can adjust the length of the wire rope, allow the wire rope to swing freely, prevent the wire rope from rotating, and facilitate lubrication.

[0025] Adjusting the wire rope length: 1. Ensures operational reliability: This method allows for easy tightening of the wire rope via the fixed-end adjustment device, compensating for the initial elongation and quickly bringing it to a stable working state. This avoids problems such as slackness, rope tangling, or inaccurate lifting height caused by excessive length. 2. Guarantees lifting life: The lifting mechanism relies on multiple wire ropes for operation, and slight differences in stiffness among the ropes can lead to uneven stress. This fixed end allows for individual adjustment of the length of each wire rope during commissioning, achieving optimal stress balance for the entire lifting system and extending the service life of all wire ropes and pulleys. 3. Facilitates wire rope maintenance and replacement: The adjustment device provides ample tolerance and adjustment space when replacing or maintaining the wire rope, making installation and commissioning simpler and faster, reducing operational difficulty and time consumption.

[0026] Preventing wire rope rotation: 1. Improves operational safety and stability. The rotation of the wire rope affects the entire lifting mechanism through pulleys, drums, etc. Preventing the wire rope from rotating reduces wear on pulleys and drums, ensures the horizontality and stability of the lifting equipment, and avoids localized breakage caused by wire rope kinking; 2. Extends wire rope life. Rotation and kinking cause internal compression deformation of the wire rope, preventing mechanical damage and breakage, avoiding safety hazards and the labor and time costs of rope replacement.

[0027] Free swing of wire rope: 1. Prevents wear and premature damage. Ample swing space greatly reduces the possibility of wire rope contact with external structures, thereby avoiding fatigue damage caused by external wear and continuous scraping and squeezing; 2. Adapts to dynamic loads. The port operation environment is complex. Wind loads, inertial forces from emergency starting and braking, and uneven ground conditions can all exacerbate the swing and sway of the wire rope. Free swing space effectively prevents the wire rope from impacting adjacent structures due to sudden and violent swing, avoiding damage to the structure and the wire rope itself.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present utility model's technical solution, based on the technical essence of the present utility model and within the spirit and principles of the present utility model, shall still fall within the protection scope of the present utility model's technical solution.

Claims

1. A wire rope end fixing device, characterized in that: The device includes a housing, a connecting shaft, a connecting shaft fixing block, and an adjusting screw. The housing has a cavity along its length. The connecting shaft fixing block is slidably disposed in the cavity within the housing and can slide back and forth along the length of the housing. The connecting shaft is rotatably disposed within the connecting shaft fixing block and is perpendicular to the side of the housing. The sides of the housing on both sides of the cavity have grooves that match the connecting shaft. Both ends of the connecting shaft are slidably disposed within the grooves on both sides of the housing. One end of the housing has a through hole that matches the adjusting screw, and the inner wall of the through hole has an internal thread. The adjusting screw is disposed in the through hole at the end of the housing and is threadedly connected to the housing. One end of the adjusting screw is rotatably connected to the connecting shaft fixing block.

2. The wire rope end fixing device according to claim 1, characterized in that: The connecting shaft is rotatably mounted within the connecting shaft fixing block via a spherical bearing.

3. The wire rope end fixing device according to claim 1, characterized in that: The other end of the housing is provided with a wedge-shaped sleeve connecting plate, and the wedge-shaped sleeve connecting plate has a connecting hole.

4. The wire rope end fixing device according to claim 1, characterized in that: One end of the adjusting screw is connected to the connecting shaft fixing block via a transition connecting block. The side of the connecting shaft fixing block facing the adjusting screw has a first blind hole. One end of the transition connecting block matches the first blind hole and is embedded in the first blind hole of the connecting shaft fixing block. One end of the transition connecting block has an annular groove arranged in the circumferential direction on its outer side. Several limiting screws are provided in the first blind hole of the connecting shaft fixing block and are locked in the annular groove of the transition connecting block to limit the axial position of the transition connecting block in the first blind hole. The other end of the transition connecting block has a second blind hole that matches the adjusting screw. The end of the adjusting screw is inserted into the second blind hole of the transition connecting block and is threadedly connected to the second blind hole.

5. The wire rope end fixing device according to claim 4, characterized in that: The end of the adjusting screw is locked and fixed to the second blind hole by a positioning bolt.

6. The wire rope end fixing device according to claim 1, characterized in that: The two ends of the connecting shaft are provided with detachable bushings at the contact points with the sliding grooves on both sides of the housing.

7. The wire rope end fixing device according to claim 1, characterized in that: A locking nut is fitted on the outside of the adjusting screw, and one side of the locking nut abuts against one end face of the housing.

8. The wire rope end fixing device according to claim 1, characterized in that: The other end of the adjusting screw is provided with a hexagonal screw head.

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