A wire rope tensioner

Abstract

The present application discloses a wire rope dragger, which relates to the technical field of wire ropes. The present application includes a housing and a mounting groove provided thereon, a shaft rod is movably provided in the mounting groove, a male joint is provided on the shaft rod, a locking piece is provided on the housing and the shaft rod, the shaft rod is locked or unlocked by the locking piece, a damping piece is provided on the housing, and the rotational friction resistance of the shaft rod is increased or reduced by the damping piece. The present application locks or unlocks the shaft rod by the locking piece, so that the dragger has a stop function, and increases or reduces the rotational friction resistance of the shaft rod by the damping piece, so that the dragger has a damping function, avoiding the phenomenon that the dragger easily rotates as long as it is subjected to force, and when the rotational stress of the wire rope is released, the dragger will not continue to rotate due to inertia, avoiding damage to the wire rope, and is therefore more practical.

Description

Technical Field

[0001] The present application relates to the technical field of wire ropes, and in particular to a wire rope tension relief device. Background Art

[0002] A wire rope is a spiral bundle of steel wires twisted together according to certain rules with steel wires that meet the requirements of mechanical properties and geometric dimensions. In material handling machinery, it is used for lifting, traction, tensioning and carrying. During use, the wire rope is prone to rotation and rotational stress is easily generated inside. The rotational stress can be released through a strain relief device. In the prior art, a wire rope strain relief device usually does not have a stopping and damping function, so that the strain relief device will easily rotate as long as it is subjected to force. Once the rotational stress of the wire rope is released, the strain relief device is likely to continue to rotate due to inertia, thereby causing damage to the wire rope. Therefore, a wire rope strain relief device is proposed. Summary of the invention

[0003] The purpose of the present application is to solve the technical problem that the wire rope dragger usually does not have the stopping and damping functions, so that the dragger will easily rotate as long as it is subjected to force. Once the rotational stress of the wire rope is released, the dragger is likely to continue to rotate due to inertia, thereby causing damage to the wire rope. The present application provides a wire rope dragger.

[0004] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0005] A wire rope tension reducer comprises a shell and a mounting groove provided thereon, a shaft rod is movably arranged in the mounting groove, a male joint is arranged on the shaft rod, locking pieces are arranged on the shell and the shaft rod, the shaft rod is locked or unlocked by the locking piece, and a damping piece is arranged on the shell, the rotational friction resistance of the shaft rod is increased or reduced by the damping piece.

[0006] Furthermore, the locking member comprises a locking hole formed on the shaft rod, and a locking bolt is threadedly provided on the housing and is plugged into and matched with the locking hole.

[0007] Furthermore, an annular groove is provided on the shaft rod, and a plurality of movable grooves connected to the mounting groove are provided on the outer shell. A base and radial balls are movably arranged in the movable groove. The radial balls are rollingly fitted in the annular groove and the base. A radial bolt whose free end overlaps and contacts the base is threadedly arranged on the outer shell.

[0008] Furthermore, a return spring sleeved on the radial bolt is provided between the base and the movable groove.

[0009] Furthermore, an axial positioning auxiliary member is provided between the shaft rod and the mounting groove.

[0010] Furthermore, the axial positioning auxiliary component includes a positioning ring arranged in the installation groove and overlapping the shaft rod, the positioning ring is provided with a first annular groove, a plurality of axial balls are movably embedded in the first annular groove, and the shaft rod is provided with a second annular groove corresponding to the first annular groove.

[0011] Furthermore, the damping member includes a receiving groove opened on the outer shell and connected to the mounting groove, a slider is slidably arranged in the receiving groove, a damping bolt with a free end that overlaps with the slider is threadedly arranged on the outer shell, and a disc spring that overlaps with the shaft rod is arranged on the slider.

[0012] Furthermore, a protruding rod is provided on the sliding block, and the disc spring is located on the outer peripheral side of the protruding rod.

[0013] The beneficial effects of the present application are as follows: the present application locks or unlocks the shaft rod through a locking member, so that the force dragger has a stopping function, and increases or decreases the rotational friction resistance of the shaft rod through a damping member, so that the force dragger has a damping function, thereby avoiding the phenomenon that the force dragger will easily rotate as long as it is subjected to force. When the rotational stress of the wire rope is released, the force dragger will not continue to rotate due to inertia, thereby avoiding damage to the wire rope, and is therefore more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the structure of this application;

[0015] Figure 2 It is an exploded perspective view of the structure of this application;

[0016] Figure 3 This application Figure 2 A three-dimensional cross-sectional view of

[0017] Figure 4 This application Figure 3 The enlarged view of point A in the middle;

[0018] Figure 5 This application Figure 3 The enlarged view of point B in the middle;

[0019] Figure 6 This application Figure 3 Enlarged view of point C in the middle.

[0020] Figure numerals: 1. housing; 2. mounting groove; 3. shaft rod; 4. male joint; 5. locking hole; 6. locking bolt; 7. annular groove; 8. movable groove; 9. base; 10. radial ball; 11. radial bolt; 12. return spring; 13. positioning ring; 14. first annular groove; 15. axial ball; 16. second annular groove; 17. receiving groove; 18. slider; 19. damping bolt; 20. disc spring; 21. protruding rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0022] like Figure 1-Figure 4 As shown, a wire rope tensioner proposed in one embodiment of the present application comprises a housing 1 and a mounting groove 2 provided thereon, the mounting groove 2 being provided along the length direction of the housing 1, a shaft 3 being movably provided in the mounting groove 2, a male joint 4 being provided on the shaft 3, a locking member being provided on the housing 1 and the shaft 3, the shaft 3 being locked or unlocked by the locking member, the locking or unlocking here referring to limiting the rotation of the shaft 3 or releasing the restriction on the shaft 3, so as to achieve the stopping function, a damping member being provided on the housing 1, the rotation friction resistance of the shaft 3 being increased or reduced by the damping member, the damping function being achieved by the damping member, and the phenomenon that the shaft 3 is easily rotated as long as a force is applied is avoided;

[0023] In the initial state, the shaft rod 3 is unlocked by the locking member, and the shaft rod 3 can rotate freely in the installation groove 2. When in use, the rotation friction resistance of the shaft rod 3 is increased or reduced by the damping member to avoid the phenomenon that the shaft rod 3 will easily rotate as long as it is subjected to force. When the rotation stress of the wire rope is released, the shaft rod 3 will not continue to rotate due to inertia, avoiding damage to the wire rope. When not in use, the shaft rod 3 is locked by the locking member, and the shaft rod 3 cannot rotate freely in the installation groove 2;

[0024] To sum up, the present application locks or unlocks the shaft rod 3 through a locking member, so that the drag device has a stopping function, and increases or decreases the rotational friction resistance of the shaft rod 3 through a damping member, so that the drag device has a damping function, thereby avoiding the phenomenon that the drag device will easily rotate as long as it is subjected to force. When the rotational stress of the wire rope is released, the drag device will not continue to rotate due to inertia, thereby avoiding damage to the wire rope, and is therefore more practical.

[0025] like Figure 3-Figure 4 As shown, in some embodiments, the locking member includes a locking hole 5 formed on the shaft 3, the locking hole 5 is formed along the radial direction of the shaft 3, and a locking bolt 6 is threadedly provided on the housing 1 and plugged into the locking hole 5;

[0026] Referring to the above, in the initial state, the free end of the locking bolt 6 is away from the locking hole 5, and the shaft rod 3 can rotate freely in the mounting groove 2. When the shaft rod 3 needs to be locked, the locking bolt 6 is tightened until its free end is inserted into the locking hole 5. The shaft rod 3 is blocked by the locking bolt 6 and cannot rotate, thereby locking the shaft rod 3. Conversely, the locking bolt 6 is loosened until its free end is away from the locking hole 5, and the shaft rod 3 can be unlocked.

[0027] like Figure 4-Figure 5 As shown, in some embodiments, an annular groove 7 is provided on the shaft 3, and a plurality of movable grooves 8 are provided on the housing 1, which are all connected to the mounting groove 2. The movable grooves 8 are provided along the radial direction of the housing 1, and the plurality of movable grooves 8 are distributed in an annular array. A base 9 and a radial ball 10 are movably provided in the movable groove 8. The radial ball 10 is in rolling cooperation with the annular groove 7 and the base 9, and the radial ball 10 cannot exit the annular groove 7. A radial bolt 11 whose free end contacts and overlaps the base 9 is threadedly provided on the housing 1;

[0028] Referring to the above, when in use, the radial bolts 11 are in a tightened state, the base 9 is close to the mounting groove 2, the radial balls 10 are in rolling cooperation with the annular groove 7 and the base 9, and when the shaft 3 rotates, the radial friction force generated between the shaft 3 and the housing 1 is reduced as much as possible through the rolling cooperation of the radial balls 10 and the annular groove 7. When not in use, the shaft 3 can be disassembled for easy repair, maintenance and replacement. The specific operation is as follows: loosen the radial bolts 11 and apply an outward pulling force to the shaft 3 until the shaft 3 withdraws from the mounting groove 2. During this process, the radial balls 10 and the base 9 are forced to move in the movable groove 8, and the radial balls 10 are away from the annular groove 7, and the base 9 is away from the mounting groove 2.

[0029] like Figure 5 As shown, in some embodiments, a return spring 12 sleeved on a radial bolt 11 is provided between the base 9 and the movable groove 8, and both ends of the return spring 12 are fixedly connected to the base 9 and the movable groove 8 respectively;

[0030] Referring to the above, when the radial bolt 11 is tightened, the return spring 12 is in a stretched state. At this time, the elastic potential energy of the return spring 12 can apply a relative force to the radial bolt 11, making the radial bolt 11 more stable. When the radial bolt 11 is loosened, the return spring 12 is reset to a natural state, and the base 9 moves to the initial position due to the elastic potential energy, thereby making the disassembly of the shaft 3 more convenient and labor-saving.

[0031] like Figure 4-Figure 6 As shown, in some embodiments, an axial positioning auxiliary member is provided between the shaft rod 3 and the mounting groove 2. The axial positioning auxiliary member can not only reduce the axial friction force generated between the shaft rod 3 and the housing 1 as much as possible, but also facilitate the rapid positioning of the shaft rod 3 during installation.

[0032] like Figure 4-Figure 6As shown, in some embodiments, the axial positioning auxiliary member includes a positioning ring 13 arranged in the installation groove 2 and in contact with the shaft rod 3, the positioning ring 13 is fixed in the installation groove 2, a first annular groove 14 is formed on the positioning ring 13, a plurality of axial balls 15 are movably embedded in the first annular groove 14, and the axial balls 15 cannot exit the first annular groove 14, and a second annular groove 16 corresponding to the first annular groove 14 is formed on the shaft rod 3, and the axial balls 15 and the second annular groove 16 are rollingly matched;

[0033] Referring to the above, when in use, the shaft 3 and the positioning ring 13 are in contact and overlap, and the second annular groove 16 is connected to the first annular groove 14. When the shaft 3 rotates, the axial friction force generated between the shaft 3 and the housing 1 is reduced as much as possible through the rolling cooperation of multiple axial balls 15 and the first annular groove 14 and the second annular groove 16. When the shaft 3 is disassembled, the positioning ring 13 is away from the shaft 3. When the shaft 3 is installed, it is quickly positioned by the positioning ring 13.

[0034] like Figure 3-Figure 6 As shown, in some embodiments, the damping member includes a receiving groove 17 opened on the housing 1 and connected to the mounting groove 2, a slider 18 is slidably arranged in the receiving groove 17, the slider 18 slides along the length direction of the housing 1, a damping bolt 19 whose free end abuts and overlaps with the slider 18 is threadedly arranged on the housing 1, a disc spring 20 abuts and overlaps with the shaft 3 is arranged on the slider 18, and the disc spring 20 is fixed on the slider 18;

[0035] Referring to the above, in the initial state, the disc spring 20 is in a natural state, and the slider 18 is away from the shaft 3. When in use, the damping bolt 19 is tightened to drive the slider 18 to slide close to the shaft 3, forcing the disc spring 20 to be squeezed and apply thrust to the shaft 3, thereby increasing the rotational friction resistance of the shaft 3. Conversely, the damping bolt 19 is loosened, the disc spring 20 tends to a natural state, and the slider 18 slides to the initial position due to elastic potential energy, thereby reducing the rotational friction resistance of the shaft 3.

[0036] like Figure 6 As shown, in some embodiments, a protruding rod 21 is provided on the slider 18, the protruding rod 21 is fixed on the slider 18, and the disc spring 20 is located on the outer peripheral side of the protruding rod 21;

[0037] With reference to the above, when the disc spring 20 is deformed, it is guided and limited by the protruding rod 21 to avoid deviation from the original motion trajectory, thereby improving the stability of use.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. 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 application. Therefore, the present application 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 wire rope tension relief device, comprising a housing (1) and a mounting groove (2) provided thereon, wherein a shaft (3) is movably arranged in the mounting groove (2), and a male joint (4) is arranged on the shaft (3), characterized in that: The housing (1) and the shaft (3) are provided with a locking member, and the shaft (3) is locked or unlocked by the locking member. The locking member comprises a locking hole (5) provided on the shaft (3). The housing (1) is provided with a locking bolt (6) which is plugged into the locking hole (5). The housing (1) is provided with a damping member, and the rotational friction resistance of the shaft (3) is increased or reduced by the damping member. The damping member comprises a receiving groove (17) provided on the housing (1) and connected to the mounting groove (2). A slider (18) is slidably provided in the receiving groove (17). The housing (1) is provided with a damping bolt (19) whose free end is in contact with and overlaps the slider (18). The slider (18) is provided with a disc spring (20) which is in contact with and overlaps the shaft (3).

2. The wire rope tensioner according to claim 1, characterized in that: The shaft (3) is provided with an annular groove (7), the housing (1) is provided with a plurality of movable grooves (8) all of which are connected to the mounting grooves (2), a base (9) and a radial ball (10) are movably arranged in the movable grooves (8), the radial ball (10) and the annular groove (7) and the base (9) are all in rolling engagement, and a radial bolt (11) whose free end is in contact with and overlaps the base (9) is threadedly arranged on the housing (1).

3. The wire rope tension relief device according to claim 2, characterized in that: A return spring (12) sleeved on the radial bolt (11) is provided between the base (9) and the movable groove (8).

4. The wire rope tension relief device according to claim 1, characterized in that: An axial positioning auxiliary component is provided between the shaft rod (3) and the mounting groove (2).

5. The wire rope tension relief device according to claim 4, characterized in that: The axial positioning auxiliary component comprises a positioning ring (13) arranged in the mounting groove (2) and abutting against and overlapping the shaft rod (3); the positioning ring (13) is provided with a first annular groove (14); a plurality of axial balls (15) are movably embedded in the first annular groove (14); and the shaft rod (3) is provided with a second annular groove (16) corresponding to the first annular groove (14).

6. The wire rope tension relief device according to claim 1, characterized in that: The slider (18) is provided with a protruding rod (21), and the disc spring (20) is located on the outer peripheral side of the protruding rod (21).

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