A strip steel tension detection device

Abstract

This invention relates to a strip tension detection device, comprising a tension roller and two sets of pressure detection mechanisms. Each pressure detection mechanism includes a pressure sensor, a force transmission pad, and a pad plate. Bearing seats are mounted at both ends of the tension roller, and these bearing seats are fixedly connected to the pad plates of the two pressure detection mechanisms, respectively. The pressure sensor includes a fixed base with a support portion at its upper end. A saddle-shaped groove is provided at the top of the support portion. The frontal view of the saddle-shaped groove is an arc-shaped groove with radius RA. The cross-section of the bottom of the arc-shaped groove along its entire arc length is an arc-shaped protrusion with radius RB, where RB > RA. The bottom shape of the force transmission pad matches the saddle-shaped groove, and the top surface of the force transmission pad is flat and fits against the pad plate. The top surface of the force transmission pad protrudes beyond the shoulder planes on both sides of the support portion. This invention has a simple structure, can automatically compensate for the force angle of the strip, and provides stable and accurate tension detection.

Description

Technical Field

[0001] This invention relates to the field of strip steel production equipment technology, specifically a strip steel tension detection device. Background Technology

[0002] In the strip steel production process, finishing is a key step in improving the surface quality, shape, and mechanical properties of the strip steel. The stability and accuracy of strip tension detection directly determine the control precision of the finishing elongation and the final strip shape quality. Currently, the tension detection devices in existing strip steel finishing equipment mostly use planar contact pressure sensors, which are rigidly connected to the bottom of the bearing housing of the tension roller.

[0003] During the finishing process, the strip steel presses against the front and rear tension rollers, forming a certain wrap angle. Simultaneously, the strip steel is prone to lateral displacement during operation, resulting in an angled force exerted by the strip steel on the tension rollers. This causes uneven loading and unbalanced force on the pressure sensor. This uneven loading distorts the sensor's detection signal, preventing it from accurately reflecting the actual tension of the strip steel. Furthermore, when the strip steel thickness changes, the contact angle between the strip steel and the tension rollers alters, further exacerbating the uneven loading problem. This leads to a significant decrease in the stability and accuracy of tension detection, ultimately affecting the control of the finishing elongation rate and resulting in poor strip shape and substandard surface quality.

[0004] Therefore, in view of the shortcomings of existing tension detection devices, such as uneven force distribution, inability to automatically compensate for angle, and insufficient detection accuracy, there is an urgent need for a tension measurement device that can automatically compensate for the force angle of the strip steel and has a simple structure. Summary of the Invention

[0005] The main objective of this invention is to solve the problems existing in the prior art and provide a strip tension detection device.

[0006] The specific solution of the present invention is as follows: a strip tension detection device, comprising a tension roller and two sets of pressure detection mechanisms. Each set of pressure detection mechanisms includes a pressure sensor, a force transmission pad, and a pad plate. The tension roller is equipped with bearing seats at both ends, and the bearing seats at both ends are fixedly connected to the pad plates of the two sets of pressure detection mechanisms respectively. The pressure sensor includes a fixed base, and a support part is provided at the upper end of the fixed base. A saddle-shaped groove is provided at the top of the support part. The frontal view of the saddle-shaped groove is an arc-shaped groove with a radius of RA. The cross section of the bottom of the arc-shaped groove along the entire arc length is an arc-shaped protrusion with a radius of RB, where RB > RA. The bottom surface shape of the force transmission pad matches the saddle-shaped groove. The top surface of the force transmission pad is a plane and fits against the pad plate. The top surface of the force transmission pad protrudes from the shoulder planes on both sides of the support part.

[0007] Furthermore, the range of RA is 60-80mm, and the range of RB is 200-300mm.

[0008] Furthermore, the top surface of the force transmission pad protrudes 5-10mm above the shoulder plane on both sides of the support portion.

[0009] Furthermore, bolt holes are provided on both sides of the support part, and countersunk holes corresponding to the two bolt holes are provided on the pad. The pad and the support part are connected by bolts.

[0010] Furthermore, bolt holes are provided on both sides of the lower end of the fixing base for installing bolts to fix the fixing base.

[0011] Furthermore, the bearing housing and the pad are connected by bolts or welding.

[0012] Compared with the prior art, the present invention has the following advantages: 1. Simple structure and easy installation: The present invention only improves the contact surface structure on the basis of the existing pressure sensor and adds force transmission pads and pads. The overall structure is simple, the number of parts is small, the assembly process is simple, and there is no need to carry out large-scale modification of the existing strip steel finishing equipment, which reduces the equipment modification and installation costs and facilitates promotion and application.

[0013] 2. Automatic compensation for strip force angle, stable and accurate tension detection: By designing the contact surface between the pressure sensor and the force transmission pad as a saddle-shaped arc surface, it can automatically adapt to the change in force angle when the strip thickness changes, effectively compensate for angle deviation, avoid sensor off-center loading problems caused by strip lateral displacement and contact angle changes, ensure that the signal detected by the pressure sensor can truly reflect the actual tension of the strip, and improve the stability and accuracy of tension detection.

[0014] 3. Improve strip finishing quality: Due to the stable and accurate tension detection, reliable data support can be provided for tension control in the strip finishing process, thereby accurately controlling the finishing elongation, effectively improving strip shape, enhancing strip surface quality and mechanical properties, reducing product scrap caused by improper tension control, and improving production efficiency and product qualification rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the working state of the present invention;

[0017] Figure 3 This is a schematic diagram of the pressure detection mechanism of the present invention;

[0018] Figure 4 This is a three-dimensional schematic diagram of the pressure sensor of the present invention;

[0019] Figure 5 yes Figure 3 AA view;

[0020] In the diagram: 1. Tension roller; 2. Bearing housing; 3. Pressure detection mechanism; 4. Strip steel; 31. Fixed seat; 32. Support part; 321. Saddle-shaped groove; 33. Force transmission pad; 34. Pad plate. Detailed Implementation

[0021] Example 1

[0022] See Figure 1-5 This embodiment is a strip tension detection device, including a tension roller 1 and two sets of pressure detection mechanisms 3. Each set of pressure detection mechanisms 3 includes a pressure sensor, a force transmission pad 33, and a pad 34. The tension roller 1 is equipped with bearing seats 2 at both ends, and the bearing seats 2 at both ends are fixedly connected to the pads 34 of the two sets of pressure detection mechanisms 3 respectively. The pressure sensor includes a fixed base 31, and a support part 32 is provided at the upper end of the fixed base 31. The top of the support part 32 is provided with a saddle-shaped groove 321. The frontal viewing angle of the saddle-shaped groove 321 is a radius RA = 80m. The arc-shaped groove has a radius RB = 200mm at each cross section along its full arc length. The bottom shape of the force transmission pad 33 matches the saddle-shaped groove 321, ensuring that the force transmission pad 33 can fit tightly against the saddle surface without looseness or gaps. The top surface of the force transmission pad 33 is flat and fits against the pad plate 34. The top surface of the force transmission pad 33 protrudes 5-10mm above the shoulder plane on both sides of the support part 32. The specific height can be adjusted according to the thickness range of the strip steel 4 and the size of the tension roller 1 to ensure concentrated force transmission.

[0023] Furthermore, bolt holes are provided on both sides of the support part 32, and countersunk holes corresponding to the two bolt holes are provided on the pad 34. The pad 34 and the support part 32 are connected by bolts.

[0024] Furthermore, bolt holes are provided on both sides of the lower end of the fixing base 31 for installing bolts to fix the fixing base 31.

[0025] Furthermore, the bearing housing 2 and the pad 34 are connected by bolts or welding to ensure that the tension on the bearing housing 2 can be fully transmitted to the pad 34.

[0026] Example 2

[0027] This embodiment is basically the same as the structure of Embodiment 1. The difference is that the front view of the saddle-shaped groove 321 is an arc-shaped groove with a radius of RA=60mm, and each section of the bottom of the groove along the full arc length passing through the axis is an arc-shaped protrusion with a radius of RB=300mm.

[0028] When the present invention is in operation, such as Figure 2As shown, strip 4 is pressed onto tension roller 1, forming a certain wrap angle. The tension of strip 4 is transmitted through tension roller 1 to bearing seats 2 at both ends. Bearing seats 2 then transmit the force to pad 34. Pad 34 evenly transmits the force to force transmission pad 33. Force transmission pad 33, through its bottom groove structure, engages with the saddle surface of the pressure sensor, transmitting the force vertically to the pressure sensor to achieve tension detection. When the thickness of strip 4 changes, the contact angle β between strip 4 and tension roller 1 changes. Force transmission pad 33 can make slight adaptive adjustments on the saddle surface, automatically compensating for the force angle and ensuring that the pressure sensor is always subjected to a vertical force, thereby guaranteeing detection accuracy.

[0029] This invention effectively solves the problems of uneven load and inability to compensate for angle in existing devices, and can control the tension detection error within ±2%, significantly improving the control accuracy of strip steel finishing elongation and reducing the strip shape defect rate by more than 30%.

Claims

1. A strip tension detection device, characterized in that: The device includes a tension roller and two sets of pressure detection mechanisms. Each pressure detection mechanism includes a pressure sensor, a force transmission pad, and a pad plate. The tension roller has bearing seats at both ends, which are fixedly connected to the pad plates of the two pressure detection mechanisms. The pressure sensor includes a fixed base with a support at the upper end. The top of the support has a saddle-shaped groove. The front view of the saddle-shaped groove is an arc-shaped groove with a radius of RA. The cross-section of the bottom of the arc-shaped groove along its entire arc length is an arc-shaped protrusion with a radius of RB, where RB > RA. The bottom shape of the force transmission pad matches the saddle-shaped groove, and the top surface of the force transmission pad is flat and fits against the pad plate. The top surface of the force transmission pad protrudes from the shoulder planes on both sides of the support.

2. The strip tension detection device according to claim 1, characterized in that: The range of RA is 60-80mm, and the range of RB is 200-300mm.

3. The strip tension detection device according to claim 1, characterized in that: The top surface of the force transmission pad protrudes 5-10mm above the shoulder plane on both sides of the support.

4. The strip tension detection device according to claim 1, characterized in that: The support part has bolt holes on both sides of the shoulder, and the pad has countersunk holes that correspond one-to-one with the two bolt holes. The pad and the support part are connected by bolts.

5. The strip tension detection device according to claim 1, characterized in that: The mounting base has bolt holes on both sides at its lower end for installing bolts to fix the mounting base.

6. The strip tension detection device according to claim 1, characterized in that: The bearing housing and the pad are connected by bolts or welding.

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