CN-224231132-U - Tension detection device

CN224231132UCN 224231132 UCN224231132 UCN 224231132UCN-224231132-U

Abstract

The utility model provides a tension detection device which comprises a sleeve, a sensor body and a force sensor, wherein the force sensor is arranged on the sensor body, one end provided with the force sensor is inserted into the sleeve, the measuring end at the other end of the sensor body is arranged outside the sleeve and is used for bearing external force, the sleeve and the sensor body are fastened by a locking device, and a lever structure is formed by using a contact point of the locking device and the sensor body as a fulcrum, so that the external force detected by the measuring end can be amplified when being transmitted to a stress end through the lever structure, the tension detection is realized, and the change of tiny tension can be accurately perceived.

Inventors

LU FENG
WANG KAI
XU CUNXIN
DONG HUAIQING
LI JIANYU

Assignees

常州神鹰碳塑复合材料有限公司

Dates

Publication Date: 20260512
Application Date: 20250513

Claims (7)

1. A tension detection device is characterized by comprising a sleeve (1), a sensor body (3) and a force sensor (6), wherein one end of the sensor body (3) is inserted into the sleeve (1), the other end of the sensor body (3) extends to the outer side of the sleeve (1) and is used for being connected with a piece to be measured, a groove (3-1) is formed in one end of the sensor body (3) inserted into the sleeve (1), the force sensor (6) is arranged in the groove (3-1), the sensor body (3) is connected with the sleeve (1) through a fastening device, and the sensor body (3) forms a lever structure through the fastening device serving as a fulcrum of the sensor body (3).
2. The tension detection device according to claim 1, wherein the sensor body (3) comprises a stress end (3-2), a measuring end (3-3) and a connecting section (3-4), the measuring end (3-3) is located on the outer side of the sleeve (1) and is used for being connected with a piece to be measured, the stress end (3-2) is inserted into the sleeve (1) and is positioned through a limiting step in the sleeve (1), the stress end (3-2) is connected with the measuring end (3-3) through the connecting section (3-4), and a groove (3-1) is formed in the side face of the stress end (3-2).
3. Tension detection device according to claim 2, characterized in that the force-receiving end (3-2) is in a clearance fit with the inner wall surface of the sleeve (1), and that a gap is formed between the outer circumferential surface of the measuring end (3-3) and the inner circumferential surface of the sleeve (1), which gap allows a relative displacement of the measuring end (3-3) within a measuring range.
4. Tension detection apparatus according to claim 2, characterized in that the force-receiving end (3-2) is connected with the sleeve (1) by a tightening device, and a lever structure is formed by taking the contact point of the tightening device and the force-receiving end (3-2) as a fulcrum, for amplifying the external force born by the measuring end (3-3).
5. Tension detection device according to claim 2, characterized in that the area of the cross section from the measuring end (3-3) to the connecting section (3-4) is suddenly reduced, the ratio of the area of the cross section of the measuring end (3-3) to the area of the cross section of the connecting section (3-4) being between 2.5 and 3.5.
6. Tension detection device according to claim 1, characterized in that a sealing structure (2) is provided between the end of the sensor body (3) inserted into the sleeve (1) and the sleeve (1).
7. The tension detection device according to claim 2, wherein limiting blocks are respectively arranged on two sides of the sleeve (1) inserted by the measuring end (3-3), and a set distance exists from the measuring end (3-3) after the limiting blocks are inserted into the sleeve (1).

Description

Tension detection device Technical Field The utility model relates to the field of tension detection, in particular to a tension detection device. Background In the modern industrial production process, the tension detection device is widely used as a key measuring tool in various fields such as papermaking, plastic film production, sheet metal processing, spinning, packaging machinery, cable manufacturing and the like. These industries have extremely high requirements on the precision, stability and reliability of tension detection, and the accurate control of tension is directly related to the quality of products, the production efficiency and the operation safety of equipment. However, the existing tension detecting device has a plurality of technical problems in practical application, and the problems seriously affect the smooth proceeding of the production process and the improvement of the product quality. First, insufficient measurement accuracy is a prominent problem. Conventional tension sensing devices often have difficulty accurately measuring small tension changes due to limitations in their structural design and sensor performance. For example, in some strain gauge based tension sensors, the sensitivity and linearity of the strain gauge are limited, resulting in weak measurement signals and susceptibility to external disturbances, which may not accurately reflect the actual tension conditions. In particular in the low tension range, measurement errors are more pronounced, which is certainly a great challenge for production processes requiring accurate tension control. Secondly, poor structural stability is also a major drawback of the existing tension detection devices. Many devices are prone to structural deformation, loosening or damage in complex industrial environments such as high temperature, high humidity, vibration, etc. Taking a common tension roller type detection device as an example, the matching precision between the roller and the bearing can be reduced due to long-term use and environmental factors, so that the repeatability and stability of the measurement result are poor. In addition, the connection structure between the sensor and the measured object of some devices is not reasonable enough, and when the tension change is large, structural resonance or shaking is easy to generate, so that the measurement accuracy is further influenced. Furthermore, the existing tension detection device has poor environmental adaptability. In actual production, the equipment often needs to operate in severe environments, such as dust, greasy dirt, corrosive gas and other places. Many tensile testing devices lack effective sealing and protection measures, resulting in internal electronic and mechanical components that are susceptible to contamination and corrosion. For example, in some chemical industry lines, the sensor surface of the tension sensing device may absorb large amounts of chemical media that not only interfere with the measurement signal, but also gradually attack the sensor material, shortening its service life, increasing maintenance costs and downtime of the equipment. Finally, the problem of limited service life is not neglected. Due to the defects of the existing tension detection device in structural design and material selection, various faults are easy to occur in the long-time use process. For example, some devices based on mechanical measurement principle have an elastic element therein that is subject to fatigue and aging under repeated tension, resulting in gradual decrease in measurement accuracy, and eventually failing to meet production requirements. Meanwhile, the vulnerable parts of part of the device are frequently replaced, so that the production cost of enterprises is increased, and the production continuity is affected. In summary, the existing tension detection device has the problems to be solved in terms of measurement accuracy, structural stability, environmental adaptability, service life and the like. The existence of these problems makes it difficult for the conventional tension detecting device to meet the actual requirements in many high-precision and high-reliability production scenarios, and a novel tension detecting device is urgently needed to overcome these technical problems so as to improve the production efficiency, the product quality and the safety of equipment operation. Disclosure of Invention Aiming at the defects in the prior art, the utility model provides the tension detection device, which uses the contact point of the fastening device and the stress end as a fulcrum through the lever structure of the sensor body, so that the sensor body can generate an amplifying effect when being stressed. The lever structure is effectively applied, so that the accurate amplification of the external force borne by the measuring end is realized, the sensitivity and the precision of tension detection are obviously improved, the tension detection device