CN-116292766-B - Tensioning equipment and tensioning method for fork lug type steel strand

CN116292766BCN 116292766 BCN116292766 BCN 116292766BCN-116292766-B

Abstract

The invention discloses tension equipment for a fork-lug type steel strand, which comprises a first mounting piece, a second mounting piece and an adjusting device, wherein the first mounting piece and the second mounting piece are respectively and fixedly connected with two parts of the fork-lug type steel strand, the distance to be adjusted is between the first mounting piece and the second mounting piece, the adjusting device comprises an adjusting rope and a jack, the jack is arranged at one end of the first mounting piece, the first end of the adjusting rope is connected with the other end of the first mounting piece, the adjusting rope bypasses the second mounting piece, the second end of the adjusting rope penetrates through the first mounting piece and is connected with the jack, and the jack is used for pulling the second end of the adjusting rope to be far away from the first mounting piece so as to drive the first mounting piece to be close to the second mounting piece. According to the tensioning equipment, the two parts with adjustable distances in the fork lug type steel strand can be mutually close only by utilizing the adjusting rope which is pulled and turned by the jack, so that a user can conveniently adjust the fork lug type steel strand to be tensioned and the pretension force of the steel strand is improved, and the tensioning equipment is simple in structure and convenient to use. The invention also discloses a tensioning method of the fork lug type steel strand.

Inventors

CAO MENG
WANG CHENG
ZHANG LIBING
WU ZHONGYUAN
XIA DENGFU

Assignees

仁卓智能科技有限公司

Dates

Publication Date: 20260512
Application Date: 20230322

Claims (13)

1. A tensioning apparatus for a forked lug steel strand, comprising: A first mounting member; The first mounting piece and the second mounting piece are respectively fixedly connected with two parts of the fork lug type steel strand, the distance of which is to be adjusted; The adjusting device comprises an adjusting rope and a jack, wherein the jack is arranged at one end of the first mounting piece, a first end of the adjusting rope is connected with the other end of the first mounting piece, the adjusting rope bypasses the second mounting piece, and a second end of the adjusting rope penetrates through the first mounting piece and is connected with the jack; The first end of the adjusting rope is fixed to the first mounting piece, or the first end of the adjusting rope penetrates through the inserting hole of the mounting piece, and the first end of the adjusting rope is fixed with an anti-falling anchor, and the anti-falling anchor is located on one side, deviating from the second mounting piece, of the first mounting piece.
2. A tensioning apparatus according to claim 1, further comprising a distance adjustment device mounted to an adjustment sleeve of the ear-stranding steel strand for screwing the adjustment sleeve when the jack pulls the second end of the adjustment rope.
3. The tensioning apparatus of claim 2, wherein the distance adjustment device is an intelligent wrench provided with an infrared distance measuring instrument for measuring a moving distance of the first mounting member; the intelligent wrench can control the number of turns and the speed of the adjusting sleeve according to the moving distance of the first mounting piece.
4. A tensioning apparatus according to claim 1, wherein the jack is a hollow jack, the second end of the adjustment line passing sequentially through the through hole of the first mounting member and the jack and mounting an anchor, the jack being sandwiched between the anchor and the first mounting member.
5. A tensioning apparatus according to claim 1, wherein the first mounting member comprises two fixing pad segments comprising a base plate and a mounting plate secured to the base plate; The two split bottom plates of the fixed pad are connected through a fixing piece, and clamp and fix the steel strand body and/or the first screw rod of the fork ear type steel strand, the first end of the adjusting rope is connected with the mounting plate of one split fixed pad, and the second end of the adjusting rope penetrates through the through hole of the mounting plate of the other split fixed pad.
6. A tensioning apparatus according to claim 5, wherein the first screw and the steel strand body are fixedly connected by a compression joint, and the two split bottom plates of the fixing pad clamp-fix the compression joint.
7. A tensioning device as claimed in claim 1, wherein the second mounting member is provided with a deflector around which the adjustment cord passes and is smoothly moveable along the deflector.
8. A tensioning device according to claim 7, wherein the steering member is a fixed pulley rotatably mounted to the second mounting member about its own axis, or is a smooth guide arc secured to the second mounting member.
9. The tensioning apparatus of claim 8, wherein the second mounting member comprises two shoulder pole beams respectively fixed to the lugs of the lug-type steel strand, and the fixed pulleys are two and symmetrically distributed on both sides of the lug-type steel strand.
10. A tensioning method of a forked lug type steel strand for a tensioning apparatus according to any one of claims 1 to 9, comprising: s1, assembling tensioning equipment on a fork lug type steel strand to be tensioned; S2, setting parameters of the jack; S3, starting the jack to enable the jack to stretch, screwing the adjusting sleeve of the fork lug type steel strand, and synchronously stopping the jack and stopping screwing the adjusting sleeve until a preset condition is met.
11. A tensioning method according to claim 10, wherein step S3 is performed by tightening the adjustment sleeve with a distance adjustment device of the tensioning apparatus, and wherein step S3 is preceded by the step S03 of setting the distance adjustment device, and wherein step S03 is located after step S2 or between step S1 and step S2.
12. The tensioning method according to claim 11, wherein the step S2 comprises the steps of inputting target prestress parameters and tensioning stroke parameters to a controller of the jack, wherein the preset conditions comprise that the pressure in the jack is equal to the target prestress parameters; initializing the distance adjusting device and inputting the pitch parameter of the internal thread of the adjusting sleeve; the adjusting sleeve for screwing the lug-shaped steel strand in the step S3 comprises the following components: The distance adjusting device adjusts the number of rotation turns and the rotating speed of the self-screwing adjusting sleeve according to the measuring result and the internal thread pitch parameter of the adjusting sleeve.
13. A tensioning method according to claim 10, wherein fitting the tensioning device to the fork-lug steel strand to be tensioned comprises: The method comprises the steps of fixing the first mounting piece with one of two parts to be adjusted in the fork-lug type steel stranded wire, fixing the second mounting piece with the other part to be adjusted in the fork-lug type steel stranded wire, arranging the first end of the adjusting rope at the first mounting piece, penetrating the second end of the adjusting rope through the through hole of the first mounting piece and the jack, and installing an anchor of the tensioning device, so that the adjusting rope bypasses the second mounting piece.

Description

Tensioning equipment and tensioning method for fork lug type steel strand Technical Field The invention relates to the technical field of steel strand tensioning, in particular to a tensioning device for a fork lug type steel strand and a tensioning method for the fork lug type steel strand. Background In recent years, the photovoltaic industry is vigorous, and flexible supports are also rising, and the flexible supports mainly adopt a steel strand tensioning bearing mode and have the characteristics of large span, small occupied area, strong adaptability and the like. At present, the fixed end of a steel strand used for a flexible support is mainly clamped and fixed by an anchorage device, and the steel strand is often slipped due to insufficient clamping force of the anchorage device, or is subjected to plastic elongation due to long-term tension of the steel strand, so that prestress loss and relaxation of the steel strand are caused, and the steel strand is inevitably swung greatly under the condition of strong wind, so that the stability and safety of the flexible support are affected. In order to solve the problem of loosening of the steel strand, a fork lug type steel strand appears on the market, and the fork lug type steel strand comprises two parts with adjustable distances. The two parts with adjustable distance in the fork lug type steel strand are pulled by the loose steel strand, so that the adjustment is difficult, and the two parts with adjustable distance in the fork lug type steel strand are required to be pulled by two jacks to resist the pulling force of the loose steel strand. However, the two jacks are needed to be used simultaneously in the mode, so that the structure is complex and the application is inconvenient. Therefore, how to simplify the structure of the tensioning device of the lug-shaped steel strand so as to be convenient for users to use is a problem to be solved urgently by those skilled in the art. Disclosure of Invention In view of the above, the invention provides a tensioning device for a fork-lug type steel strand, which utilizes a jack to pull a steering adjusting rope to enable two parts with adjustable distance in the fork-lug type steel strand to be close to each other, thereby being convenient for a user to adjust the fork-lug type steel strand to be tensioned and improving the pretension of the steel strand. The invention also provides a tensioning method of the fork-lug type steel strand, which is used for the tensioning equipment, and is convenient for a user to adjust the tension of the fork-lug type steel strand by using simpler equipment. In order to achieve the above purpose, the present invention provides the following technical solutions: a tensioning apparatus for a forked lug steel strand, comprising: A first mounting member; The first mounting piece and the second mounting piece are respectively fixedly connected with two parts of the fork lug type steel strand, the distance of which is to be adjusted; The adjusting device comprises an adjusting rope and a jack, wherein the jack is arranged at one end of the first mounting piece, a first end of the adjusting rope is connected to the other end of the first mounting piece, the adjusting rope bypasses the second mounting piece, a second end of the adjusting rope penetrates through the first mounting piece and is connected to the jack, and the jack is used for pulling the second end of the adjusting rope away from the first mounting piece so as to drive the first mounting piece to be close to the second mounting piece. Preferably, in the tensioning device, the tensioning device further comprises a distance adjusting device, wherein the distance adjusting device is mounted on an adjusting sleeve of the fork lug type steel strand and is used for screwing the adjusting sleeve when the jack pulls the second end of the adjusting rope. Preferably, in the tensioning device, the distance adjusting device is an intelligent wrench, and the intelligent wrench is provided with an infrared distance measuring instrument for measuring the moving distance of the first mounting piece; the intelligent wrench can control the number of turns and the speed of the adjusting sleeve according to the moving distance of the first mounting piece. Preferably, in the tensioning device, the jack is a hollow jack, the second end of the adjusting rope sequentially passes through the through hole of the first mounting piece and the jack, and is provided with an anchor, and the jack is clamped between the anchor and the first mounting piece. Preferably, in the above tensioning device, the first end of the adjusting rope is fixed to the first mounting member, or The first end of the adjusting rope penetrates through the inserting hole of the mounting piece, and the first end of the adjusting rope is fixedly provided with an anti-falling anchor, and the anti-falling anchor is located on one side, deviating from the second mounting piece, o