A reusable wire rope length variation compensation device

Abstract

A reusable wire rope length change compensation device relates to a wire rope length change compensation device. The present invention is to solve the problem that the wire rope may creep or the use length of the wire rope may change due to the operation of the equipment during the use of the wire rope. The present invention includes a fixed support, a wire rope length change compensation mechanism and two fixed pulley blocks; the two fixed pulley blocks are fixed side by side on the top of the fixed support, the wire rope length change compensation mechanism is installed in the middle of the fixed support, the wire rope passes through the two fixed pulley blocks in sequence, and the middle of the wire rope passes through the wire rope length change compensation mechanism. The present invention belongs to the field of machinery.

Description

Technical Field

[0001] The invention relates to a wire rope length variation compensation device, belonging to the mechanical field. Background Art

[0002] During the use of the wire rope, the wire rope may creep or the use length of the wire rope may change due to the operation of the equipment. Therefore, a wire rope length change compensation device is required to compensate for the change in the length of the wire rope to ensure that the steel wire is always in a pre-tightened state to avoid the wire rope slipping or the wire rope being entangled in other structures. Summary of the invention

[0003] The present invention aims to solve the problem that during the use of the steel wire rope, the steel wire rope may creep or the use length of the steel wire rope may change due to the operation of equipment, and further proposes a length change compensation device for a reusable steel wire rope.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: the present invention includes a fixed support, a wire rope length change compensation mechanism and two fixed pulley groups; the two fixed pulley groups are fixed side by side on the top of the fixed support, the wire rope length change compensation mechanism is installed in the middle of the fixed support, the wire rope passes through the two fixed pulley groups in sequence, and the middle part of the wire rope passes through the wire rope length change compensation mechanism.

[0005] Furthermore, the wire rope length variation compensation mechanism includes a pre-tensioning bracket, a movable pulley assembly and a plurality of pre-tensioning spring assemblies; the movable pulley assembly is installed in the pre-tensioning bracket through a plurality of the pre-tensioning spring assemblies, and the middle portion of the wire rope passes through the movable pulley assembly.

[0006] Furthermore, the movable pulley assembly includes a movable pulley, a movable pulley bracket and a pin shaft; the movable pulley bracket is installed in the pre-tensioning bracket through a plurality of the pre-tensioning spring assemblies, the movable pulley is rotatably installed on the movable pulley bracket through the pin shaft, and the movable pulley is located outside the pre-tensioning bracket, and the middle part of the wire rope is wrapped around the rim of the movable pulley.

[0007] Furthermore, the multiple pre-tensioning spring assemblies refer to four pre-tensioning spring assemblies, each of which includes a tooling bolt, a pre-tensioning spring and a nut; the lower end of the tooling bolt passes through the through hole on the upper surface of the movable pulley bracket and the through hole on the bottom surface of the pre-tensioning bracket from bottom to top, the nut is screwed on the lower end of the tooling bolt, and the nut is located below the bottom surface of the pre-tensioning bracket, the pre-tensioning spring is coaxially sleeved on the tooling bolt, and the upper end of the pre-tensioning spring contacts the inner top surface of the movable pulley bracket, and the lower end of the pre-tensioning spring contacts the inner bottom surface of the pre-tensioning bracket.

[0008] Furthermore, the preload spring assembly also includes a first gasket and a second gasket; the first gasket is coaxially mounted on the upper end of the tooling bolt, and the first gasket is located between the upper surface of the movable pulley bracket and the lower surface of the top end of the working bolt, and the second gasket is coaxially mounted on the lower end of the tooling bolt, and the second gasket is located between the bottom surface of the preload bracket and the upper surface of the nut.

[0009] Furthermore, the wire rope length variation compensation mechanism also includes two limit assemblies, which are symmetrically arranged on both sides of the movable pulley assembly, and the limit assemblies are fixedly connected to the pre-tightening bracket.

[0010] Furthermore, the limiting assembly includes a limiting block and a screw; the limiting block is fixedly connected to the edge of the upper surface of the preload bracket by the screw, and the lower surface of the limiting block contacts the upper surface of the movable pulley bracket.

[0011] The beneficial effects of the present invention are:

[0012] 1. During the entire working process, the present invention can always provide sufficient and reliable pre-tightening force for the steel wire rope;

[0013] 2. The movable pulley in the present invention has a displacement amplification effect. The movable pulley moves one time under the action of the spring to compensate for the length of the wire rope twice.

[0014] 3. Steel wire ropes are generally used for long-distance connection and force transmission. The present invention can achieve deformation compensation of steel wire ropes for long-distance force transmission;

[0015] 4. The present invention is installed by tooling screws, which can meet the requirements of large preload force;

[0016] 5. The present invention is designed with a wire protection device to prevent the wire rope from escaping from the movable pulley groove during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a top view of the wire rope length variation compensation mechanism;

[0019] Figure 3 yes Figure 2 Middle AA section view;

[0020] Figure 4 It is the three-view and three-dimensional diagram of the wire rope length change compensation mechanism after the tooling bolts are locked. Figure 4 a is the main view of the wire rope length change compensation mechanism after the tooling bolts are tightened. Figure 4 b is the side view of the wire rope length change compensation mechanism after the tooling bolts are tightened. Figure 4c is the top view of the wire rope length change compensation mechanism after the tooling bolts are tightened. Figure 4 d is a three-dimensional diagram of the wire rope length change compensation mechanism after the tooling bolts are tightened;

[0021] Figure 5 Before and after the tooling bolts are removed Figure 4 c is the BB section view;

[0022] Figure 6 It is an oblique side view of the wire rope length change compensation mechanism after the tooling bolts are taken out;

[0023] Figure 7 After the wire rope is installed Figure 4 a is the CC section view. DETAILED DESCRIPTION

[0024] Specific implementation method 1: Combination Figure 1 To illustrate this embodiment, a reusable wire rope length change compensation device described in this embodiment includes a fixed support 1, a wire rope length change compensation mechanism 2 and two fixed pulley blocks 3; the two fixed pulley blocks 3 are fixed side by side on the top of the fixed support 1, the wire rope length change compensation mechanism 2 is installed in the middle of the fixed support 1, the wire rope 4 passes through the two fixed pulley blocks 3 in sequence, and the middle part of the wire rope 4 passes through the wire rope length change compensation mechanism 2.

[0025] In this embodiment, after the steel wire rope 4 passes through the fixed pulley groove on the fixed pulley block 3 and the movable pulley groove on the steel wire rope length compensation mechanism 2, the two ends of the steel wire rope 4 are fixedly installed on different devices respectively.

[0026] Specific implementation method 2: Combination Figures 2 to 3 This embodiment is described. The wire rope length variation compensation mechanism 2 of the reusable wire rope length variation compensation device described in this embodiment includes a pre-tension bracket 201, a movable pulley assembly and a plurality of pre-tension spring assemblies; the movable pulley assembly is installed in the pre-tension bracket 201 through a plurality of the pre-tension spring assemblies, and the middle part of the wire rope 4 passes through the movable pulley assembly. Other components and connection relationships are the same as those of the first embodiment.

[0027] Specific implementation method three: Combination Figures 2 to 3 To illustrate this embodiment, the movable pulley assembly of a reusable wire rope length variation compensation device described in this embodiment includes a movable pulley 202, a movable pulley bracket 203 and a pin 204; the movable pulley bracket 203 is installed in the pre-tensioning bracket 201 through a plurality of the pre-tensioning spring assemblies, and the movable pulley 202 is rotatably installed on the movable pulley bracket 203 through the pin 204, and the movable pulley 202 is located outside the pre-tensioning bracket 201, and the middle part of the wire rope 4 is wound around the rim of the movable pulley 202.

[0028] The lower end of the movable pulley bracket 203 is installed in the pre-tightening bracket 201, and the movable pulley bracket 203 and the pre-tightening bracket 201 can slide relative to each other.

[0029] The other components and connection relationships are the same as those of the second specific implementation method.

[0030] Specific implementation method four: Combination Figures 2 to 3 To explain this embodiment, the multiple pre-tensioning spring assemblies of a reusable wire rope length change compensation device described in this embodiment refer to four pre-tensioning spring assemblies, each of which includes a tooling bolt 205, a pre-tensioning spring 206 and a nut 207; the lower end of the tooling bolt 205 passes through the through hole on the upper surface of the movable pulley bracket 203 and the through hole on the bottom surface of the pre-tensioning bracket 201 from bottom to top, the nut 207 is screwed on the lower end of the tooling bolt 205, and the nut 207 is located below the bottom surface of the pre-tensioning bracket 201, the pre-tensioning spring 206 is coaxially sleeved on the tooling bolt 205, and the upper end of the pre-tensioning spring 206 contacts the inner top surface of the movable pulley bracket 203, and the lower end of the pre-tensioning spring 206 contacts the inner bottom surface of the pre-tensioning bracket 201.

[0031] The four preload springs 206 can provide elongation displacement and preload force when the length of the steel wire rope 4 changes.

[0032] Other components and connection relationships are the same as those of the third specific implementation method.

[0033] Specific implementation method five: Combination Figures 2 to 3 To illustrate this embodiment, the pre-tensioning spring assembly of a reusable wire rope length variation compensation device described in this embodiment also includes a first gasket 208 and a second gasket 209; the first gasket 208 is coaxially sleeved on the upper end of the tooling bolt 205, and the first gasket 208 is located between the upper surface of the movable pulley bracket 203 and the lower surface of the top end of the working bolt 205, and the second gasket 209 is coaxially sleeved on the lower end of the tooling bolt 205, and the second gasket 209 is located between the bottom surface of the pre-tensioning bracket 201 and the upper surface of the nut 207.

[0034] During the installation process of the movable pulley bracket 203, the pre-tightening bracket 201 and the pre-tightening spring 206, the tooling bolt 205, the first gasket 208, the second gasket 209 and the nut 207 are required to apply force.

[0035] Other components and connection relationships are the same as those of the fourth specific implementation method.

[0036] Specific implementation method six: Combination Figures 2 to 3To explain this embodiment, the wire rope length variation compensation mechanism 2 of the reusable wire rope length variation compensation device described in this embodiment further includes two limit assemblies, which are symmetrically arranged on both sides of the movable pulley assembly, and the limit assemblies are fixedly connected to the pre-tightening bracket 201. Other components and connection relationships are the same as those of the second specific embodiment.

[0037] Specific implementation method seven: Combination Figures 2 to 3 To illustrate this embodiment, the limit assembly of a reusable wire rope length change compensation device described in this embodiment includes a limit block 210 and a screw 211; the limit block 210 is fixedly connected to the edge of the upper surface of the pre-tightening bracket 201 by the screw 211, and the lower surface of the limit block 210 is in contact with the upper surface of the movable pulley bracket 203.

[0038] The limit block 210 can limit the maximum distance that the movable pulley bracket 203 moves in the pre-tightening bracket 201 and ensure that the pulley bracket 203 does not escape from the pre-tightening bracket 201 .

[0039] The other components and connection relationships are the same as those in the third or sixth specific implementation mode.

[0040] The working process of the present invention is:

[0041] like Figure 3 As shown, before the wire rope length variation compensation mechanism 2 is used, the tooling bolt 205, the first gasket offset 208, the second gasket 209 and the nut 207 are installed between the movable pulley bracket 203, the preload spring 206 and the preload bracket 203;

[0042] After the installation is completed, the four tooling bolts 205 and nuts 207 are tightened synchronously. When the preload spring 206 between the movable pulley bracket 203 and the preload bracket 201 reaches the Figure 5 When the status shown is reached, stop the booster operation;

[0043] like Figure 1 As shown, the wire rope length variation compensation mechanism 2 is installed on the fixed support 1 after the tooling bolts 205 are tightened, and the fixed pulley block 3 is also installed on the fixed support 1.

[0044] like Figure 1 and Figure 7 As shown, the steel wire rope 4 is passed through the fixed pulley block 3 and the fixed pulley groove of the steel wire rope length variation compensation mechanism 2, and then both ends of the steel wire rope 4 are fixedly installed;

[0045] After the steel wire rope 4 is completely installed, the four tooling bolts 205 and nuts 207 are slowly loosened synchronously until the four tooling bolts 205 are completely removed. During the process of the bolts being continuously loosened, the steel wire rope 4 is continuously tightened under the elastic force of the four pre-tightening springs 206, thereby completing the pre-tightening work of the steel wire rope 4;

[0046] When the length of the steel wire rope 4 changes due to creep or movement, the four preload springs 206 can push the movable pulley bracket 203 and the movable pulley 202 to compensate for the length.

[0047] On the movable pulley bracket 203, the movable pulley 202 is mounted on the movable pulley bracket 203 through the pin shaft 204. The maximum outer contour distance between the inner wall of the outer edge of the movable pulley bracket 203 and the pulley is 0.1 mm, which plays the role of a wire guard to prevent the wire rope 4 from escaping from the guide groove of the movable pulley 202.

[0048] like Figure 7 As shown, after the tooling bolt 205 is locked and before being removed, the wire rope 4 is passed around the movable pulley 202 of the wire rope length change compensation mechanism 2, the wire rope 4 is tightened and both ends of the wire rope 4 are fixed and installed, and the installation of the wire rope 4 is completed;

[0049] After the steel wire rope 4 is installed, the tooling bolt 205, the nut 207, the first gasket 208 and the second gasket 209 are removed to complete the pre-tightening of the steel wire rope 4.

[0050] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A reusable wire rope length variation compensation device, characterized in that: The reusable wire rope length variation compensation device comprises a fixed support (1), a wire rope length variation compensation mechanism (2) and two fixed pulley blocks (3); the two fixed pulley blocks (3) are fixed side by side on the top of the fixed support (1), the wire rope length variation compensation mechanism (2) is installed in the middle of the fixed support (1), the wire rope (4) passes through the two fixed pulley blocks (3) in sequence, and the middle of the wire rope (4) passes through the wire rope length variation compensation mechanism (2); The wire rope length variation compensation mechanism (2) comprises a pre-tensioning bracket (201), a movable pulley assembly and a plurality of pre-tensioning spring assemblies; the movable pulley assembly is installed in the pre-tensioning bracket (201) via the plurality of pre-tensioning spring assemblies, and the middle portion of the wire rope (4) passes through the movable pulley assembly.

2. A reusable wire rope length variation compensation device according to claim 1, characterized in that: The movable pulley assembly comprises a movable pulley (202), a movable pulley bracket (203) and a pin shaft (204); the movable pulley bracket (203) is installed in the pre-tensioning bracket (201) via a plurality of the pre-tensioning spring assemblies, the movable pulley (202) is rotatably installed on the movable pulley bracket (203) via the pin shaft (204), and the movable pulley (202) is located outside the pre-tensioning bracket (201), and the middle part of the steel wire rope (4) is wound around the rim of the movable pulley (202).

3. A reusable wire rope length variation compensation device according to claim 2, characterized in that: The multiple preload spring assemblies refer to four preload spring assemblies, each of which comprises a tooling bolt (205), a preload spring (206) and a nut (207); the lower end of the tooling bolt (205) passes through the through hole on the upper surface of the movable pulley bracket (203) and the through hole on the bottom surface of the preload bracket (201) in sequence from bottom to top, the nut (207) is screwed onto the lower end of the tooling bolt (205), and the nut (207) is located below the bottom surface of the preload bracket (201), the preload spring (206) is coaxially sleeved on the tooling bolt (205), and the upper end of the preload spring (206) contacts the inner top surface of the movable pulley bracket (203), and the lower end of the preload spring (206) contacts the inner bottom surface of the preload bracket (201).

4. The reusable wire rope length variation compensation device according to claim 3, characterized in that: The preload spring assembly further comprises a first gasket (208) and a second gasket (209); the first gasket (208) is coaxially sleeved on the upper end of the tooling bolt (205), and the first gasket (208) is located between the upper surface of the movable pulley bracket (203) and the lower surface of the top end of the tooling bolt (205); the second gasket (209) is coaxially sleeved on the lower end of the tooling bolt (205), and the second gasket (209) is located between the bottom surface of the preload bracket (201) and the upper surface of the nut (207).

5. The reusable wire rope length variation compensation device according to claim 1, characterized in that: The wire rope length variation compensation mechanism (2) further comprises two limit assemblies, the two limit assemblies are symmetrically arranged on both sides of the movable pulley assembly, and the limit assemblies are fixedly connected to the pre-tightening bracket (201).

6. A reusable wire rope length variation compensation device according to claim 2 or 5, characterized in that: The limiting assembly comprises a limiting block (210) and a screw (211); the limiting block (210) is fixedly connected to the edge of the upper surface of the pre-tightening bracket (201) via the screw (211), and the lower surface of the limiting block (210) is in contact with the upper surface of the movable pulley bracket (203).

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