Loop roller quick change device

Abstract

The utility model relates to the technical field of steel rolling equipment, especially to a quick replacement device for looped roller, which comprises a bottom plate, a fixing frame, a pin hole, a bolt, a roller body and a locking frame, the fixing frame is arranged above the bottom plate, the fixing frame is provided with two groups, the two sides of the fixing frame are both provided with the pin hole, the roller body is arranged above the bottom plate, the two ends of the roller body are respectively located inside the two groups of fixing frames, the two ends of the roller body are both provided with through holes, the bolt is provided with two groups, the two groups of bolts are respectively penetrated through the fixing frame and the roller body through the pin hole and the through hole, one side of the fixing frame is provided with the locking frame, the inside of the locking frame is provided with a recess, and one end of the bolt is located inside the recess; the bolt penetrates the fixing frame and the roller body through the pin hole and the through hole, the roller body can be fixed inside the two groups of fixing frames, the bolt can be locked through the setting of the locking frame, the bolt cannot be accidentally taken out due to vibration, the stability of the roller body is ensured, and the fixed mode of the bolt is more rapid and safe.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling equipment technology, and in particular to a quick change device for looper rolls. Background Technology

[0002] In steel rolling production lines, the looper system is a key piece of equipment that ensures constant tension of strip steel between rolling mills and achieves tension-free rolling. As the core load-bearing and guiding component of the looper system, the looper rolls are subjected to harsh working conditions of high temperature, high load, and high wear for a long time. Therefore, they need to be frequently replaced and maintained to ensure the stable operation of the production line and product quality.

[0003] Currently, most steel rolling production lines still use traditional bolt fastening methods to fix the slip rolls. When replacing slip rolls, multiple operators need to work together with specialized tools to disassemble and install multiple bolts one by one. The whole process is time-consuming, causing unnecessary production downtime and severely restricting the improvement of production efficiency. Moreover, it is inconvenient to operate in the space-constrained rolling line environment, and it is very easy to cause safety accidents such as equipment loosening or even falling due to operational errors or insufficient bolt tightening torque. In addition, bolts and their threaded holes are prone to wear or stripping during repeated disassembly and assembly, resulting in a decrease in fixing reliability, increasing additional maintenance costs and equipment failure risks.

[0004] Therefore, to address the above issues, a quick replacement device for slip rolls can be designed. The combination of a pin-type quick-locking mechanism and an optimized high-strength welded base plate replaces the traditional bolt connection method, enabling single-person, quick, and safe replacement of slip rolls. This significantly reduces downtime, labor intensity, and maintenance costs. Furthermore, the pin avoids the problem of thread wear failure, effectively improving the safety and reliability of equipment operation. Utility Model Content

[0005] To overcome the problem that traditional steel rolling production lines use bolts to fix slip rolls, which requires multiple operators to work together with specialized tools when changing slip rolls, is not only time-consuming but also poses certain safety hazards. The bolts and their threaded holes are prone to wear or stripping during repeated disassembly and assembly, resulting in a decrease in fixing reliability, increased maintenance costs, and equipment failure risks.

[0006] The technical solution of this utility model is as follows: a quick-change device for a looper roller, comprising a base plate, a fixing frame, pin holes, pins, a roller body, and a locking frame. The fixing frame is welded to the top of the base plate, and two sets of fixing frames are provided. The two sets of fixing frames are located at both ends of the base plate, and pin holes are provided on both sides of the fixing frame. The roller body is located on the top of the base plate, and both ends of the roller body are located inside the two sets of fixing frames. Through holes are provided at both ends of the roller body. Two sets of pins are provided, and the two sets of pins pass through the fixing frame and the roller body through the pin holes and through holes, respectively. The pins are L-shaped. A locking frame is provided on one side of the fixing frame, and a groove is provided inside the locking frame. One end of the pin is located inside the groove.

[0007] Preferably, the two sets of fixing frames are installed and fixed by setting a base plate. The pin passes through the fixing frame and the roller body through the pin hole and through hole, which can fix the roller body inside the two sets of fixing frames. The pin can be locked by setting a locking frame to prevent the pin from accidentally coming out due to vibration, thus ensuring the stability of the roller body fixing. The pin fixing method replaces the traditional bolt connection method, realizing the single-person, fast and safe replacement of the loose roller, thereby significantly shortening downtime, reducing labor intensity and maintenance costs. Moreover, the pin avoids the problem of thread wear failure, effectively improving the safety and reliability of equipment operation.

[0008] As a preferred option, the mounting bracket adopts a dome-shaped integrated structure and is welded to the base plate.

[0009] Preferably, after the pin is inserted into the pin hole and the through hole, it forms a 40-degree angle with the base plate.

[0010] Preferably, the pin is made of wear-resistant alloy material, and the tensile strength of the pin is ≥800MPa.

[0011] Preferably, a connecting plate is fixedly installed on one side of the locking frame, and the connecting plate is fixedly connected to the fixing frame by bolts.

[0012] Preferably, the opening of the groove in the locking frame has a beveled structure.

[0013] The beneficial effects of this utility model are: The pin passes through the pin hole and through hole, penetrating the fixing frame and the roller body. It can fix the roller body inside the two sets of fixing frames. When the pin is inserted, it forms a 40-degree angle with the base plate. Under the action of gravity, guided by the inclined surface at the groove opening, one end of the pin will rotate into the groove of the locking frame. The locking frame can then lock the pin, preventing it from accidentally coming out due to vibration and ensuring the stability of the roller body. The pin fixing method replaces the traditional bolt connection method, enabling single-person, fast, and safe replacement of the slip-on roller. This significantly shortens downtime, reduces labor intensity and maintenance costs, and avoids the problem of thread wear failure, effectively improving the safety and reliability of equipment operation. Attached Figure Description

[0014] Figure 1 The diagram shown is a first three-dimensional structural schematic of the quick-change device for the looper roller of this utility model. Figure 2 The diagram shown is a second three-dimensional structural schematic of the quick-change device for the looper roller of this utility model. Figure 3 The diagram shown is a three-dimensional structural diagram of the quick-change device for looper rollers of this utility model in the disassembled state. Figure 4 The diagram shown is a three-dimensional structural schematic of the locking frame of the quick-change device for the looper roller of this utility model. Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Fixing frame; 201. Pin hole; 3. Pin; 4. Roller body; 401. Through hole; 501. Locking frame; 502. Groove; 503. Connecting plate. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Please see Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment: a quick-change device for a looper roller, including a base plate 1, a fixing frame 2, pin holes 201, pins 3, a roller body 4, and a locking frame 501. The fixing frame 2 is welded to the top of the base plate 1, and two sets of fixing frames 2 are provided, with the two sets of fixing frames 2 located at both ends of the base plate 1. Pin holes 201 are opened on both sides of the fixing frame 2. The roller body 4 is located above the base plate 1, with both ends of the roller body 4 located inside the two sets of fixing frames 2. Through holes 401 are opened at both ends of the roller body 4. Two sets of pins 3 are provided, and the two sets of pins 3 pass through the fixing frame 2 and the roller body 4 through the pin holes 201 and the through holes 401, respectively. The pins 3 have an L-shaped structure. A locking frame 501 is provided on one side of the fixing frame 2. The inside of the base plate 1 has a groove 502, and one end of the pin 3 is located inside the groove 502. The two sets of fixing brackets 2 are installed and fixed by the base plate 1. The pin 3 passes through the pin hole 201 and the through hole 401 through the fixing bracket 2 and the roller body 4, and can fix the roller body 4 inside the two sets of fixing brackets 2. The locking bracket 501 can lock the pin 3 to prevent the pin 3 from accidentally coming out due to vibration, and ensure the stability of the roller body 4. The pin 3 fixing method replaces the traditional bolt connection method, realizing the single-person, fast and safe replacement of the loose roller, thereby significantly shortening the downtime, reducing labor intensity and maintenance costs. Moreover, the pin 3 avoids the problem of thread wear failure, effectively improving the safety and reliability of equipment operation.

[0017] Please see Figure 1 , Figure 2 and Figure 4In this embodiment, after the pin 3 is inserted into the pin hole 201 and the through hole 401, it forms a 40-degree angle with the base plate 1. The pin 3 is made of wear-resistant alloy material, and the tensile strength of the pin 3 is ≥800MPa. A connecting plate 503 is fixedly installed on one side of the locking frame 501. The connecting plate 503 is fixedly connected to the fixing frame 2 by bolts. The opening of the groove 502 of the locking frame 501 has a beveled structure. By setting the mounting plate, the locking frame 501 can be fixed to one side of the fixing frame 2. The beveled structure at the opening of the groove 502 can guide the pin 3 to smoothly enter the interior of the groove 502. The beveled pin 3 can stably keep one end of the pin 3 inside the groove 502 of the locking frame 501 under the action of gravity, thereby ensuring the stability of the pin 3.

[0018] Please see Figure 1 and Figure 2 In this embodiment, the fixing frame 2 adopts a dome-shaped integrated structure and is welded to the base plate 1. The welding structure between the base plate 1 and the fixing frame 2 is a double-sided full welding structure. The dome-shaped integrated structure of the fixing frame 2 ensures the stability of the fixing frame 2 structure while conforming to the shape of the roller body 4.

[0019] During processing, the dimensions of the roller body 4 are first measured, and the dimensions of the base plate 1 are customized according to the roller body 4. Fixing frames 2 are symmetrically welded at both ends of the base plate 1 so that the spacing of the fixing frames 2 matches the two ends of the roller body 4. The welding points are double-sided full welding structures to ensure that the load-bearing strength is ≥ 1.5 times the maximum working load of the looper roller. After welding, ultrasonic flaw detection is performed to ensure the stability of the weld. During installation, the roller body 4 is inserted into the interior of the fixing frame 2, so that the through holes 401 at both ends of the roller body 4 correspond to the pin holes 201 of the fixing frame 2. Then, the pin 3 is inserted to lock the roller body 4 inside the two sets of fixing frames 2. After the pin 3 is inserted into the pin hole 201 and the through hole 401, it forms a 40-degree angle with the base plate 1. Under the action of gravity, one end of the pin 3 will enter the groove 502 of the locking frame 501. The locking frame 501 is used to lock the pin 3 to prevent the pin 3 from accidentally coming out due to vibration and to ensure the stability of the roller body 4. When it is necessary to disassemble the roller body 4, simply rotate the pin 3 out from the groove 502 and pull out the pin 3 to easily remove the roller body 4. Then replace the roller body 4 with a new one according to the above steps.

[0020] Through the above steps, the pin 3, using the pin hole 201 and through hole 401 to pass through the fixing frame 2 and the roller body 4, can fix the roller body 4 inside the two sets of fixing frames 2. The locking frame 501 can lock the pin 3 to prevent it from accidentally coming out due to vibration, ensuring the stability of the roller body 4. The pin 3 fixing method replaces the traditional bolt connection method, realizing the single-person, fast and safe replacement of the looper roller, thereby significantly shortening downtime, reducing labor intensity and maintenance costs. Moreover, the pin 3 avoids the problem of thread wear failure, effectively improving the safety and reliability of equipment operation. This solves the problem of the traditional steel rolling production line using bolt fastening to fix the looper roller. When replacing the looper roller, multiple operators need to work together with professional tools, which is not only time-consuming but also has certain safety hazards. The bolts and their threaded holes are prone to wear or stripping during repeated disassembly and assembly, resulting in a decrease in fixing reliability, increasing additional maintenance costs and equipment failure risks.

[0021] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A quick-change device for looper rollers, comprising a base plate (1), characterized in that: It also includes a fixing frame (2), pin holes (201), pins (3), roller body (4) and locking frame (501). The fixing frame (2) is welded to the top of the base plate (1). There are two sets of fixing frames (2). The two sets of fixing frames (2) are located at both ends of the base plate (1). Pin holes (201) are opened on both sides of the fixing frame (2). The roller body (4) is located above the base plate (1). The two ends of the roller body (4) are located inside the two sets of fixing frames (2). Through holes (401) are opened at both ends of the roller body (4). There are two sets of pins (3). The two sets of pins (3) pass through the fixing frame (2) and the roller body (4) through the pin holes (201) and through holes (401) respectively. The pins (3) are L-shaped. A locking frame (501) is provided on one side of the fixing frame (2). A groove (502) is opened inside the locking frame (501). One end of the pin (3) is located inside the groove (502).

2. The quick-change device for looper rollers according to claim 1, characterized in that: The fixed frame (2) adopts a dome-shaped integrated structure and is welded to the base plate (1).

3. The quick-change device for looper rollers according to claim 1, characterized in that: After the pin (3) is inserted into the pin hole (201) and the through hole (401), it forms a 40-degree angle with the base plate (1).

4. The quick-change device for looper rollers according to claim 1, characterized in that: The pin (3) is made of wear-resistant alloy material, and the tensile strength of the pin (3) is ≥800MPa.

5. The quick-change device for looper rollers according to claim 1, characterized in that: A connecting plate (503) is fixedly installed on one side of the locking frame (501), and the connecting plate (503) is fixedly connected to the fixing frame (2) by bolts.

6. The quick-change device for looper rollers according to claim 1, characterized in that: The opening of the groove (502) of the locking frame (501) has a beveled structure.

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