CN-122016130-A - High-precision space three-dimensional rope tension measuring device

Abstract

The invention discloses a high-precision space three-dimensional rope tension measuring device which comprises a guide assembly, a winding drum and a measuring mechanism, wherein the winding drum is arranged in front of the guide assembly, the guide assembly comprises a base, a guide unit and a measuring unit, the guide unit sequentially comprises a first guide wheel, a second guide wheel, a third guide wheel and a fourth guide wheel from front to back, axes of the second guide wheel, the third guide wheel and the fourth guide wheel are arranged in parallel, a guide surface of the first guide wheel is arranged towards the winding drum, a rope on the winding drum sequentially penetrates through the guide wheels and extends downwards to be connected with a load, and the measuring mechanism measures the tension of the rope. By simplifying the guide nodes around, the whole structure of the device is greatly simplified, and the occupied space and the weight of the device are reduced. The axes of the second guide wheel and the fourth guide wheel are arranged in parallel, so that the rope winding micro friction force can be reliably guided and connected with the load, and the measuring mechanism can be used for measuring the tension with high precision, high stability and reliability.

Inventors

• SHI RONGWU
• FANG YONGGANG
• LI TING
• XUE YONGQIANG
• LI CHANGMING
• ZHANG ZHAN
• QIAN WANTAO
• LI XIAOPENG

Assignees

• 中航电测仪器(西安)有限公司

Dates

Publication Date

20260512

Application Date

20260401

Claims (10)

1. 1. The high-precision space three-dimensional rope tension measuring device is characterized by comprising a guide assembly (1), a winding drum (2) and a measuring mechanism (3); The device comprises a reel (2), a guide assembly (1), a measuring unit, a first guide wheel (12), a second guide wheel (13), a third guide wheel (14) and a fourth guide wheel (15), wherein the reel (2) is arranged in front of the guide assembly (1), the guide assembly (1) comprises a base (11), the guide unit and the measuring unit, the guide unit sequentially comprises the first guide wheel (12), the second guide wheel (13), the third guide wheel (14) and the fourth guide wheel (15) from front to back, the axes of the second guide wheel (13), the third guide wheel (14) and the fourth guide wheel (15) are arranged in parallel, the first guide wheel (12) is arranged in a specified direction of the second guide wheel (13), the axis of the first guide wheel (12) and the axis of the second guide wheel (13) are at a specified angle, and a guide surface of the first guide wheel (12) is arranged towards the reel (2); The rope (21) on the winding drum (2) sequentially passes through the guide wheels and extends downwards to be connected with a load, and the measuring mechanism (3) is used for measuring the tension of the rope (21).
2. 2. A high precision spatial three dimensional rope tension measuring device according to claim 1, wherein the second guide wheel (13), the third guide wheel (14) and the fourth guide wheel (15) are regularly arranged such that the projection of the rope (21) in a vertical plane at the axis of the third guide wheel (14) is at a set angle.
3. 3. A high precision spatial three dimensional rope tension measuring device according to claim 2, wherein the rope (21) passes under the second guide wheel (13) and out over the third guide wheel (14), the measuring means (3) being arranged to measure rope (21) forces experienced by the third guide wheel (14).
4. 4. A high-precision spatial three-dimensional rope tension measuring device according to claim 1, wherein the axis of the drum (2) is arranged in a prescribed direction and the axis of the drum (2) is arranged at a prescribed angle to the axis of the second guide wheel (13).
5. 5. A high precision spatial three-dimensional rope tension measuring device according to claim 1, characterized in that the measuring means (3) comprises a tension sensitive structure, a measuring circuit and a signal conditioning module (31), the measuring circuit obtaining tension signals from the tension sensitive structure, the signal conditioning module (31) being adapted to provide a precision power supply to the measuring circuit and to filter and amplify the tension signals.
6. 6. A high precision spatial three dimensional rope tension measuring device according to claim 5, wherein the tension sensitive structure comprises a force sensor for measuring the force of the rope (21) against at least one of the guide wheels.
7. 7. The high-precision spatial three-dimensional rope tension measuring device according to claim 6, wherein a mounting cavity (18) is arranged in the middle of the base (11), the signal conditioning module (31) is arranged in the mounting cavity (18), and the tension sensitive structure extends out from one side of the mounting cavity (18) and is connected with a corresponding guide wheel.
8. 8. A high precision spatial three dimensional rope tension measuring device according to claim 6, wherein the measuring circuit is a wheatstone bridge.
9. 9. The high-precision space three-dimensional rope tension measuring device according to claim 1, wherein the outer circumference of each guide wheel is provided with an annular guide groove, and a group of rolling bearings are arranged inside the guide groove, so that the guide micro friction force is realized.
10. 10. The high-precision spatial three-dimensional rope tension measuring device according to claim 1, wherein each guide wheel is a V-wheel and the first guide wheel (12) may be a V-shaped flat bottom structure, the guide unit further comprising an anti-disengagement structure for avoiding the rope (21) from jumping out of the guide wheel for reliable guiding.

Description

High-precision space three-dimensional rope tension measuring device Technical Field The invention belongs to the technical field of force sensors, and particularly relates to a high-precision space three-dimensional rope tension measuring device. Background In the operation and use process of high-end equipment and complex mechanical equipment, the tension of the rope is required to be measured in real time, so that corresponding action control is realized, and the operation safety and stability of the equipment are ensured. In the prior art, the measurement of rope tension is realized in a two-dimensional stress space through a tension sensor, and the measurement accuracy is generally about 0.1 percent. Aiming at a high-precision measurement scene of the tension of a space three-dimensional rope, the special space three-dimensional rope guide mechanism and a tension sensor in a two-dimensional stress space are matched to realize the high-precision measurement scene, the defects of complex structure, large occupied space, high equipment weight and large friction force of the running rope exist at the position of up to 7 guide nodes in the scheme, meanwhile, the friction force fluctuation caused by multi-node guide can further reduce the precision of tension measurement, and the high-precision, high-stability measurement and micro-friction force reliable guide requirements of the tension of the rope with the angle orientation greatly changed in the three-dimensional space, which are superior to those of more than 0.02%, can not be met. Disclosure of Invention The technical problem to be solved by the invention is to provide the high-precision space three-dimensional rope tension measuring device aiming at the defects in the prior art, the whole structure of the device is greatly simplified by simplifying the guide nodes to four places, the friction force is reduced, the axes of the second guide wheel to the fourth guide wheel are arranged in parallel, the rope winding micro friction force is convenient to reliably guide and connect with the load, and the measuring mechanism is convenient to measure the tension with high precision, high stability and reliability. The method is used for solving the technical problems that friction fluctuation caused by multi-node guiding in the prior art reduces tension measurement precision, and the requirement of rope tension measurement on angle azimuth change in three-dimensional space is difficult to meet. The invention adopts the following technical scheme that the high-precision space three-dimensional rope tension measuring device comprises a guide assembly, a winding drum and a measuring mechanism; the guide assembly comprises a base, a guide unit and a measuring unit, wherein the guide unit sequentially comprises a first guide wheel, a second guide wheel, a third guide wheel and a fourth guide wheel from front to back, the axes of the second guide wheel, the third guide wheel and the fourth guide wheel are arranged in parallel, the first guide wheel is arranged in a specified direction of the second guide wheel, the axis of the first guide wheel and the axis of the second guide wheel are at specified angles, and the guide surface of the first guide wheel is arranged towards the roll; The rope on the winding drum sequentially passes through the guide wheels and extends downwards to be connected with a load, and the measuring mechanism is used for measuring the tension of the rope. Preferably, the second guide wheel, the third guide wheel and the fourth guide wheel are regularly arranged, so that the projection of the rope in the vertical plane at the axis of the third guide wheel is at a set angle. Preferably, the rope passes through the lower part of the second guide wheel and passes out of the upper part of the third guide wheel, and the measuring mechanism is used for measuring the rope force exerted by the third guide wheel. Preferably, the axis of the spool is arranged in a prescribed direction, and the axis of the spool is arranged at a prescribed angle to the axis of the second guide wheel. Preferably, the measuring mechanism comprises a tension sensitive structure, a measuring circuit and a signal conditioning module, wherein the measuring circuit obtains tension signals according to the tension sensitive structure, and the signal conditioning module is used for providing a precise power supply for the measuring circuit and filtering and amplifying the tension signals. Preferably, the tension sensitive structure comprises a force sensor for measuring the force of the rope against at least one of the guide wheels. Preferably, the middle part of base is provided with the installation cavity, signal conditioning module arranges in the installation cavity, tension sensitive structure stretches out and connects corresponding leading wheel from one side of installation cavity. Preferably, the measuring circuit is a Wheatstone bridge. Preferably, the outer circumfer