Loop tension protection device

Abstract

The utility model relates to the field of live loop tension protection technology, concretely is a kind of live loop tension protection device, including live loop rack, the top end of live loop rack is slidably installed with upper roll platform, and upper roll platform is driven to lift by winch, and the surface of upper roll platform is provided with sliding slot, and the top end of sliding slot is installed with electric push rod, and the output end of electric push rod is installed with sliding block, and sliding block is slidably installed in sliding slot, and first mounting shaft is arranged on sliding block, and first sleeve shaft is installed on first mounting shaft, and pressure detection piece is arranged between first sleeve shaft and mounting shaft, and upper rotating roller is installed on the surface of first sleeve shaft by bearing, the bottom of live loop rack is provided with bottom roll platform, and lower rotating roller is installed on bottom roll platform, and the utility model can flexibly carry out the adjustment of live loop tension, guarantees the conveying effect of steel band.

Description

Technical Field

[0001] This utility model relates to the field of loop tension protection technology, specifically a loop tension protection device. Background Technology

[0002] In the conveying and processing of strip materials such as steel strips, the looper is a key piece of equipment for adjusting material tension and coordinating the speed difference between upstream and downstream processes. The stability of its tension control directly affects product quality and production safety. Existing loopers mostly achieve tension adjustment by driving the upper roller platform to rise and fall with a winch, which can only perform overall tension control and is difficult to adapt to scenarios with local tension fluctuations.

[0003] When the material conveying speed changes abruptly or there is uneven material tension, traditional devices lack precise local adjustment capabilities, which can easily lead to local over-tension causing material breakage, or local slack causing problems such as stacking and deviation.

[0004] Meanwhile, the existing devices lack sufficient tension monitoring accuracy, cannot acquire tension data at key points in real time, and rely solely on a single mechanical structure for passive adjustment, resulting in a delayed response and difficulty in coping with dynamic tension changes. Utility Model Content

[0005] The purpose of this invention is to provide a loop tension protection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a looper tension protection device, comprising a looper frame, an upper roller platform slidably mounted on the top of the looper frame, the upper roller platform being driven to rise and fall by a winch, a sliding groove being formed on the surface of the upper roller platform, an electric push rod being mounted on the top of the sliding groove, a sliding block being mounted on the output end of the electric push rod, the sliding block being slidably mounted in the sliding groove, a first mounting shaft being provided on the sliding block, a first sleeve shaft being mounted on the first mounting shaft, a first pressure detection element being provided between the first sleeve shaft and the first mounting shaft, an upper rotating roller being mounted on the surface of the first sleeve shaft via a bearing, a bottom roller platform being provided at the bottom of the looper frame, and a lower rotating roller being mounted on the bottom roller platform.

[0007] The present invention is further configured such that multiple lower rotating rollers are provided, a tension protection roller is provided between two adjacent lower rotating rollers, and an automatic tension adjustment structure is provided on the looper frame in conjunction with the tension protection roller.

[0008] The present invention is further configured such that the automatic tension adjustment structure includes a mounting base, which is located at the bottom of the looper frame. Each tension protection roller has a mounting bracket on its outer side. A damper is installed between the mounting bracket and the mounting base. Due to the damper, when the tension of the threaded steel strip increases, it pulls the tension protection roller, which in turn moves the mounting bracket, pulling the damper and causing it to deform. This achieves automatic tension adjustment during the steel strip conveying process. Here, the damper is set with a minimum and a maximum limit. When the force applied by the steel strip to the tension protection roller exceeds the minimum limit, the damper is pulled, thus achieving automatic tension adjustment of the steel strip conveying. When the force applied by the steel strip to the tension protection roller reaches the maximum limit, the deformation of the damper reaches its maximum, and the steel strip can no longer adjust itself.

[0009] The present invention is further configured such that each mounting bracket is provided with a second mounting shaft, a second sleeve shaft is sleeved on the second mounting shaft, and a second pressure detection element is provided between the second sleeve shaft and the second mounting shaft. The tension protection roller is mounted on the second sleeve shaft through a bearing. In this way, when the steel belt passes through the bottom end of the tension protection roller, it will squeeze the tension protection roller and squeeze the second sleeve through the tension protection roller. The pressure received is detected by the second pressure detection element, so the tension of the steel belt during the conveying process can be calculated. When the tension exceeds the set value, the operation of the electric push rod can be controlled to realize the active adjustment of the tension.

[0010] The present invention is further configured such that the mounting frame includes a supporting vertical frame and a mounting horizontal frame, the supporting vertical frame is symmetrically and vertically installed on both sides of the mounting horizontal frame for supporting the mounting shaft, and a material conveying trough is formed between the mounting horizontal frame and the tension protection roller.

[0011] The present invention is further configured such that a sliding groove is provided on the surface of the looper frame, and a slider is slidably installed in the sliding groove. The upper roller platform is installed on the surface of the slider. Through the cooperation of the sliding groove and the slider, the upper roller platform can be slidably installed on the looper frame. In this way, when the upper roller platform is raised and lowered by the existing winch, the movement stability of the upper roller platform can be improved, thereby improving the installation stability of the upper roller.

[0012] The present invention is further configured such that the top and bottom ends of the damper are provided with connecting ends, and the connecting ends are respectively connected to the mounting cross frame and the mounting base frame, thereby realizing the stable installation of the damper between the mounting cross frame and the mounting base frame.

[0013] The present invention is further configured such that the steel strip is wound sequentially between the lower rotating roller, the upper rotating roller and the tension protection roller, and passes through the feed trough.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. It has both automatic and active tension adjustment capabilities to adapt to different tension scenarios. After the steel strip is threaded, when the tension changes, the tension protection roller drives the mounting frame to pull the damper. The damper automatically deforms and adjusts the tension within the set range. When the tension reaches the upper limit of the damper or the pressure detection device detects that the tension exceeds the threshold, the electric push rod drives the upper rotating roller to move to achieve active adjustment, avoiding steel strip breakage or loosening. The adjustment is flexible and responsive, adapting to dynamic tension requirements.

[0015] 2. Precise tension monitoring allows for targeted adjustment of individual steel belt tension. The upper rotating roller and tension protection roller are equipped with first and second pressure detection elements respectively, monitoring the pressure at each turning point in real time and converting the data into tension. Driven by an electric push rod, the movement of a single upper rotating roller allows for precise adjustment of individual steel belt sections with abnormal tension, resolving localized tension unevenness. This is more accurate than overall adjustment and improves the stability of the steel belt conveyor.

[0016] 3. Balancing local and overall adjustment, adapting to diverse needs and ensuring stable operation. An electric push rod drives a single roller for localized fine-tuning, while a winch drives the overall lifting and lowering of the upper roller platform to adjust the overall tension of the steel belt. This dual adjustment method adapts to different working conditions. Sliders and sliders enhance the stability of the upper roller platform's lifting, and dampers are securely installed via connecting ends. The coordinated operation of all structures ensures stable device operation, making it suitable for long-term, continuous steel belt conveying operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a loop tension protection device according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of a loop tension protection device according to the present invention. Figure 2 ; Figure 3 This is a cross-sectional schematic diagram of the installation structure of the upper rotating roller on the upper roller platform in this utility model; Figure 4 This is a schematic diagram of the installation structure of the tension protection roller in this utility model; Figure 5 This is a cross-sectional view of the installation structure of the tension protection roller in this utility model; Figure 6 This is a cross-sectional view of the installation structure of the upper rotating roller in this utility model.

[0018] The components represented by each number in the attached diagram are listed below: 1. Loop frame; 2. Upper roller platform; 3. Sliding groove; 4. Electric push rod; 5. Sliding block; 6. First mounting shaft; 7. First set of shafts; 8. First pressure detection element; 9. Upper rotating roller; 10. Bottom roller platform; 11. Lower rotating roller; 12. Tension protection roller; 13. Mounting base frame; 14. Mounting frame; 15. Damper; 16. Second mounting shaft; 17. Second set of shafts; 18. Second pressure detection element; 19. Support vertical frame; 20. Mounting horizontal frame; 21. Feed chute; 22. Sliding groove; 23. Sliding block; 24. Connecting end; 100. Steel strip. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides a technical solution: Please refer to Figures 1-6 A looper tension protection device includes a looper frame 1, an upper roller platform 2 slidably mounted on the top of the looper frame 1, the upper roller platform 2 being driven to rise and fall by a winch, a sliding groove 3 being formed on the surface of the upper roller platform 2, an electric push rod 4 being mounted on the top of the sliding groove 3, a sliding block 5 being mounted on the output end of the electric push rod 4, the sliding block 5 being slidably mounted in the sliding groove 3, a first mounting shaft 6 being provided on the sliding block 5, a first set of shafts 7 being mounted on the first mounting shaft 6, a first pressure detection element 8 being provided between the first set of shafts 7 and the first mounting shaft 6, an upper rotating roller 9 being mounted on the surface of the first set of shafts 7 via bearings, a bottom roller platform 10 being provided at the bottom of the looper frame 1, and a lower rotating roller 11 being mounted on the bottom roller platform 10.

[0021] Please see Figures 1-6 As one embodiment of the present invention: multiple lower rotating rollers 11 are provided in the present invention, and a tension protection roller 12 is provided between two adjacent lower rotating rollers 11. An automatic tension adjustment structure is provided on the loop frame 1 in conjunction with the tension protection roller 12.

[0022] Please see Figures 1-6As one embodiment of this utility model: the automatic tension adjustment structure of this utility model includes a mounting base 13, which is set at the bottom end of the looper frame 1. Each tension protection roller 12 has a mounting frame 14 on its outer side. A damper 15 is provided between the mounting frame 14 and the mounting base 13. Due to the damper 15, when the tension of the threaded steel strip 100 increases, it pulls the tension protection roller 12, which in turn moves the mounting frame 14, thus pulling the damper 15. The movement causes the damper 15 to deform, thereby achieving automatic adjustment of the tension during the conveying process of the steel belt 100. Here, the damper 15 is set with a minimum limit value and a maximum limit value. When the force applied by the steel belt 100 to the tension protection roller 12 is greater than the minimum limit value, the damper 15 will be pulled, thereby achieving automatic adjustment of the conveying tension of the steel belt 100. When the force applied by the steel belt 100 to the tension protection roller 12 reaches the maximum limit value, the deformation of the damper 15 reaches its maximum, and the steel belt 100 can no longer achieve autonomous adjustment.

[0023] Please see Figures 1-6 As one embodiment of this utility model: Each mounting bracket 14 is provided with a second mounting shaft 16, and a second sleeve shaft 17 is sleeved on the second mounting shaft 16. A second pressure detection element 18 is provided between the second sleeve shaft 17 and the second mounting shaft 16. The tension protection roller 12 is mounted on the second sleeve shaft 17 through a bearing. In this way, when the steel belt 100 passes through the bottom end of the tension protection roller 12, it will squeeze the tension protection roller 12 and squeeze the second sleeve through the tension protection roller 12. The pressure received is detected by the second pressure detection element 18, so the tension received by the steel belt 100 during the conveying process can be calculated. When the tension exceeds the set value, the operation of the electric push rod 4 can be controlled to realize the active adjustment of the tension.

[0024] Please see Figures 1-6 As one embodiment of the present invention: the mounting frame 14 of the present invention includes a supporting vertical frame 19 and a mounting horizontal frame 20. The supporting vertical frame 19 is symmetrically and vertically installed on both sides of the mounting horizontal frame 20 for supporting the mounting shaft. A material conveying groove 21 is formed between the mounting horizontal frame 20 and the tension protection roller 12.

[0025] Please see Figures 1-6 As one embodiment of the present invention: the surface of the looper frame 1 is provided with a sliding groove 22, and a slider 23 is slidably installed in the sliding groove 22. The upper roller platform 2 is installed on the surface of the slider 23. Through the cooperation of the sliding groove 22 and the slider 23, the upper roller platform 2 can be slidably installed on the looper frame 1. In this way, when the upper roller platform 2 is raised and lowered by the existing winch, the movement stability of the upper roller platform 2 can be improved, thereby improving the installation stability of the upper roller 9.

[0026] Please see Figures 1-6 As one embodiment of the present invention: The damper 15 is provided with a connecting end 24 at both the top and bottom ends. The connecting end 24 is connected to the mounting crossbeam 20 and the mounting base 13 respectively, so that the damper 15 can be stably installed between the mounting crossbeam 20 and the mounting base 13 through the connecting end 24.

[0027] Please see Figures 1-6 As one embodiment of the present invention: In the present invention, the steel strip 100 is wound sequentially between the lower rotating roller 11, the upper rotating roller 9 and the tension protection roller 12, and passes through the conveying trough 21.

[0028] In summary: In use, the steel strip 100 is threaded between the lower rotating roller 11, the upper rotating roller 9, and the tension protection roller 12. During operation, when the force applied by the steel belt 100 to the tension protection roller 12 is greater than the minimum limit value of the damper 15, the damper 15 will be pulled, thereby realizing the automatic adjustment of the conveying tension of the steel belt 100. When the force applied by the steel belt 100 to the tension protection roller 12 is between the minimum and maximum limit values ​​of the damper 15, the damper 15 will automatically expand and contract with the tension change of the steel belt 100, thereby ensuring the tension stability of the steel belt 100 during the conveying process. When the force applied by the steel belt 100 to the tension protection roller 12 reaches the maximum limit value, the deformation of the damper 15 reaches its maximum, and the steel belt 100 can no longer be autonomously adjusted. In this invention, the tension protection rollers 12 are arranged alternately between the lower rotating rollers 11, so that the tension adjustment of the conveying steel belt 100 can be uniformly realized, avoiding the situation of untimely and inflexible local adjustment.

[0029] During this process, the pressure at each turning point of the steel strip 100 can be monitored in a timely and convenient manner through the first pressure detection element 8 and the second pressure detection element 18, thereby allowing the tension of each segment of the steel strip 100 to be calculated. When the damper 15 reaches its set maximum value at a certain turning point of the steel belt 100, or when the first pressure detection element 8 and the second pressure detection element 18 detect that the pressure has reached the set value, the electric push rod 4 can be activated. The electric push rod 4 can control the movement of the sliding block 5, which in turn drives the first mounting shaft 6 to move. The first mounting shaft 6 then drives the first set of shafts 7 to move, which in turn drives the upper rotating roller 9 to move. This achieves the adjustment of the tension of the steel belt 100 during conveying, preventing the steel belt 100 from breaking due to local over-tension or becoming loose due to low tension during conveying. By adopting the above method, the tension performance of each section of the steel belt 100 can be precisely adjusted, improving the adjustment accuracy.

[0030] In this invention, the upper roller platform 2 can be raised and lowered as a whole by a winch, thereby controlling the raising and lowering of the upper rotating roller 9 as a whole, and thus conveniently adjusting the tension of the steel strip 100 as a whole. This invention can achieve tension adjustment and protection of the looper during operation through a combination of various methods, thereby improving the stability of the steel belt 100 during the conveying process.

[0031] In this invention, both the first pressure sensing element 8 and the second pressure sensing element 18 preferably adopt existing pressure sensor products.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A looper tension protection device, comprising a looper frame (1), wherein an upper roller platform (2) is slidably mounted on the top end of the looper frame (1), and the upper roller platform (2) is driven to rise and fall by a winch, characterized in that: The upper roller platform (2) has a sliding groove (3) on its surface. An electric push rod (4) is installed at the top of the sliding groove (3). A sliding block (5) is installed at the output end of the electric push rod (4). The sliding block (5) is slidably installed in the sliding groove (3). A first mounting shaft (6) is provided on the sliding block (5). A first set of shafts (7) is installed on the first mounting shaft (6). A first pressure detection element (8) is provided between the first set of shafts (7) and the first mounting shaft (6). An upper rotating roller (9) is installed on the surface of the first set of shafts (7) through a bearing. A bottom roller platform (10) is provided at the bottom end of the looper frame (1). A lower rotating roller (11) is installed on the bottom roller platform (10).

2. The loop tension protection device according to claim 1, characterized in that: Multiple lower rotating rollers (11) are provided, and a tension protection roller (12) is provided between two adjacent lower rotating rollers (11). An automatic tension adjustment structure is provided on the looper frame (1) in conjunction with the tension protection roller (12).

3. The loop tension protection device according to claim 2, characterized in that: The automatic tension adjustment structure includes a mounting base (13), which is located at the bottom of the looper frame (1). Each tension protection roller (12) is provided with a mounting frame (14) on its outer side, and a damper (15) is provided between the mounting frame (14) and the mounting base (13).

4. The loop tension protection device according to claim 3, characterized in that: Each of the mounting brackets (14) is provided with a second mounting shaft (16), a second set of shafts (17) is sleeved on the second mounting shaft (16), a second pressure detection element (18) is provided between the second set of shafts (17) and the second mounting shaft (16), and the tension protection roller (12) is mounted on the second set of shafts (17) through a bearing.

5. A loop tension protection device according to claim 4, characterized in that: The mounting frame (14) includes a support vertical frame (19) and a mounting horizontal frame (20). The support vertical frame (19) is symmetrically and vertically installed on both sides of the mounting horizontal frame (20) for supporting the installation of the shaft. A material conveying groove (21) is formed between the mounting horizontal frame (20) and the tension protection roller (12).

6. The loop tension protection device according to claim 1, characterized in that: The surface of the looper frame (1) is provided with a sliding groove (22), and a slider (23) is slidably installed in the sliding groove (22). The upper roller platform (2) is installed on the surface of the slider (23).

7. A loop tension protection device according to claim 5, characterized in that: The damper (15) is provided with a connecting end (24) at both the top and bottom, and the connecting end (24) is connected to the mounting cross frame (20) and the mounting base frame (13) respectively.

8. A loop tension protection device according to claim 2, characterized in that: The steel strip (100) is wound sequentially between the lower rotating roller (11), the upper rotating roller (9), and the tension protection roller (12).

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