A folding type cloth high-temperature setting roller

Abstract

The utility model provides a folding cloth high temperature setting roller belongs to cloth folding device technical field, a folding cloth high temperature setting roller, including workstation, install two lower transmission shafts and two lower transmission shafts in the workstation, install a plurality of lower strip conveyer belt between two lower transmission shafts, install a plurality of upper strip conveyer belt between two transmission shafts, the outer surface of workstation is equipped with the synchronous drive mechanism for synchronous belt drive left lower transmission shaft and left upper transmission shaft synchronous movement, the right side of upper strip conveyer belt is equipped with two roller holder fixedly connected between workstation, two heating roller bodies are rotatably installed between two roller holders, the utility model discloses a synchronous drive mechanism is sent cloth, and the positioning, edge folding, compacting shaping device sets shape, and the preheating of cloth guide plate, and the position control of positioning sensor, realize efficient folding setting, improve product quality, stability and aesthetic degree, satisfy high quality cloth product production demand.

Description

Technical Field

[0001] This utility model relates to the technical field of fabric folding devices, specifically to a folding fabric high-temperature shaping roller. Background Technology

[0002] In the fabric processing industry, with the increasing demand for higher quality and greater diversity of fabric products, the folding and shaping processes of fabrics are facing numerous challenges.

[0003] Traditional fabric folding and shaping equipment often has many shortcomings. On the one hand, the fabric conveying system lacks a precise synchronous drive mechanism, and the upper and lower conveyor belts are difficult to work together, which leads to problems such as positional deviation and inconsistent speed of the fabric during the conveying process, seriously affecting the stability of subsequent processing steps and the consistency of product quality.

[0004] On the other hand, during the folding process of fabric, most equipment lacks effective positioning and folding devices, making it impossible to accurately fold both ends of the fabric towards the middle, resulting in an irregular shape of the folded fabric that is difficult to meet production requirements.

[0005] Furthermore, existing equipment has shortcomings in the preheating and final compression and shaping of the fabric. Uneven or insufficient preheating makes it difficult to shape the fabric during subsequent folding and setting, affecting the shaping effect.

[0006] To address these technical problems, a folding fabric high-temperature setting roller is provided. Utility Model Content

[0007] The purpose of this invention is to provide a foldable fabric high-temperature setting roller to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: A folding fabric high-temperature shaping roller includes a worktable, in which two lower drive shafts and two upper drive shafts are installed. Multiple lower strip conveyor belts are installed between the two lower drive shafts, and multiple upper strip conveyor belts are installed between the two upper drive shafts. A synchronous drive mechanism is installed on the outer surface of the worktable for synchronously driving the left lower drive shaft and the left upper drive shaft to move synchronously. Two roller seats are fixedly connected to the worktable on the right side of the upper strip conveyor belt, and two heating roller bodies are rotatably installed between the two roller seats; Four support columns are fixedly installed inside the workbench. The four support columns are arranged in a rectangular pattern on the outside of the lower strip conveyor belt, and a support plate is fixedly installed between the tops of the four support columns. The support plate is located on the inside of the lower strip conveyor belt. A positioning device is fixedly installed inside the workbench. The positioning device works in conjunction with the support plate to press and fix the middle part of the fabric onto the support plate. Bearing seats are fixedly installed on the opposite surfaces of the support columns on both the left and right sides. Folding devices are rotatably installed between the two corresponding bearing seats at the front and back. The folding devices are used in conjunction with the support plate to fold the two ends of the fabric toward the middle. A fixing plate is fixedly installed on the front surface of the two front support columns, and two driving devices for driving the folding device to move are fixedly installed on the fixing plate. A compression and shaping device is fixedly installed between the upper surfaces of the four bearing seats. The compression and shaping device is used in conjunction with the support plate to compress and shape the folded fabric.

[0009] Preferably, a guide plate is fixedly installed inside the workbench, and the guide plate is inclinedly arranged between the unloading end of the upper strip conveyor belt and the feeding end of the two heating rollers.

[0010] Preferably, the synchronous drive mechanism includes a servo motor, a transmission chain, and two sprockets. The servo motor is fixedly mounted on the rear surface of the workbench, and the output end of the servo motor is fixedly connected to the rear end of the upper transmission shaft on the left. The two sprockets are respectively sleeved on the front outer surfaces of the upper transmission shaft on the left and the lower transmission shaft on the left, and the transmission chain is sleeved between the two sprockets.

[0011] Preferably, the positioning device includes a hydraulic telescopic rod A fixedly installed in the workbench, a lifting plate fixedly installed on the upper surface of the hydraulic telescopic rod A, two pneumatic telescopic rods A arranged opposite to each other fixedly installed on the upper surface of the lifting plate, a vertical plate fixedly installed on the opposite end of each pneumatic telescopic rod A, and a U-shaped pressure plate fixedly installed on the upper surface of each vertical plate.

[0012] Preferably, the folding device includes a drive shaft rotatably disposed between two bearing seats, and a plurality of kits are fixedly mounted on the outer surface of the drive shaft. The kits are staggered with the lower strip conveyor belt, and folding plates are fixedly mounted on the outer surface of the kits.

[0013] Preferably, the driving device includes a pneumatic telescopic rod B and a gear. The gear is sleeved on the outer surface of the front end of the corresponding drive shaft. The pneumatic telescopic rod B is fixedly installed on the upper surface of the fixed plate, and a rack plate is fixedly installed on the upper surface of the telescopic end of the pneumatic telescopic rod B. The rack plate is meshed with the gear.

[0014] Preferably, the pressing and shaping device includes a support frame, which is fixedly connected to the bearing seat, and a hydraulic telescopic rod B is fixedly installed through the upper surface of the support frame. A pressure plate is fixedly installed on the lower surface of the hydraulic telescopic rod B, and the pressure plate is located above the support plate.

[0015] Preferably, a hoisting frame is fixedly installed on the upper surface of the support frame, and a positioning sensor is fixedly installed through the upper surface of the right end of the hoisting frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This folding fabric high-temperature shaping roller ensures stable fabric transport by the upper and lower conveyor belts through a synchronous drive mechanism, laying a solid foundation for subsequent processes. Utilizing positioning, folding, and pressing / shaping devices, it achieves initial fabric positioning, efficient folding, and ideal pressing / shaping effects. Simultaneously, the guide plate guides the fabric for smooth preheating, and the positioning sensor precisely controls the fabric processing position. Overall, the fabric folding and shaping process is highly efficient and convenient, effectively improving product quality, enhancing the stability and aesthetics of the folded fabric, and meeting market demands for high-quality fabric products. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is a schematic diagram of the positioning device structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the folding device structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the main structure of this utility model.

[0021] In the diagram: 1. Workbench; 11. Lower drive shaft; 12. Upper drive shaft; 13. Lower strip conveyor belt; 14. Upper strip conveyor belt; 15. Guide plate; 2. Roller seat; 3. Heating roller body; 4. Support column; 41. Support plate; 42. Bearing seat; 43. Fixing plate; 5. Positioning device; 51. Hydraulic telescopic rod A; 52. Lifting plate; 53. Pneumatic telescopic rod A; 54. Vertical plate; 55. U-shaped pressure plate; 6. Folding device; 61. Drive shaft; 62. Kit; 63. Folding plate; 7. Drive rotation device; 71. Drive telescopic rod B; 72. Rack plate; 73. Gear; 8. Pressing and shaping device; 81. Support frame; 82. Hydraulic telescopic rod B; 83. Pressure plate; 9. Lifting frame; 91. Positioning sensor. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a technical solution: A folding fabric high-temperature shaping roller includes a worktable 1. Two lower drive shafts 11 and two upper drive shafts 12 are installed inside the worktable 1. Multiple lower strip conveyor belts 13 are installed between the two lower drive shafts 11, and multiple upper strip conveyor belts 14 are installed between the two upper drive shafts 12. A synchronous drive mechanism for synchronously driving the left lower drive shaft 11 and the left upper drive shaft 12 to move synchronously is installed on the outer surface of the worktable 1. The workbench 1 serves as the basic support structure for the entire equipment. The upper and lower drive shafts (lower drive shaft 11, upper drive shaft 12) and their corresponding strip conveyors (lower strip conveyor 13, upper strip conveyor 14) constitute the fabric conveying system. The upper conveyor 14 is responsible for conveying the fabric to the heating area, while the lower conveyor 13 plays a role in the subsequent folding and shaping processes. The synchronous drive mechanism 16 ensures that the upper and lower conveyors work together to convey the fabric at a stable speed, guaranteeing the consistency and stability of the fabric during conveying and preparing it for subsequent processes.

[0024] Two roller seats 2 are fixedly connected to the worktable 1 on the right side of the upper strip conveyor belt 14, and two heating roller bodies 3 are rotatably installed between the two roller seats 2; The roller seat 2 is welded and fixed to the workbench 1, providing support for the heating roller body 3 and enabling it to rotate stably. The function of the heating roller body 3 is to preheat the fabric conveyed from the upper strip conveyor belt 14 at high temperature. By preheating both sides of the fabric, it is easier to shape the fabric in the subsequent folding and shaping process, thus improving the shaping effect. This is an important preheating step in the entire fabric folding and shaping process.

[0025] Four support columns 4 are fixedly installed inside the workbench 1. The four support columns 4 are arranged in a rectangular pattern on the outside of the lower strip conveyor belt 13. A support plate 41 is fixedly installed between the tops of the four support columns 4. The support plate 41 is located on the inside of the lower strip conveyor belt 13. Four support columns 4 provide stable support for the support plate 41, which is located inside the lower strip conveyor belt 13. It is used to support the fabric during the folding and shaping process and to provide a stable plane for subsequent operations such as positioning, hemming and pressing of the fabric. It is an important load-bearing structure in the entire folding and shaping area.

[0026] A positioning device 5 is fixedly installed inside the workbench 1. After the fabric is conveyed to the folding area, the positioning device 5 works with the support plate 41 to press and fix the middle part of the fabric onto the support plate 41.

[0027] Bearing seats 42 are fixedly installed on the opposite surfaces of the support columns 4 on both the left and right sides. Folding devices 6 are rotatably installed between the two corresponding bearing seats 42 at the front and rear. The folding devices 6 are used in conjunction with the support plate 41 to fold the two ends of the fabric towards the middle. The bearing seat 42 provides rotational support for the folding device 6, allowing the folding device 6 to rotate around a certain axis. The folding device 6 cooperates with the support plate 41 and, after being positioned and fixed in the middle of the fabric, folds both ends of the fabric towards the middle. This is the key step in realizing fabric folding. Through the coordinated work of the two folding devices 6, the fabric is initially folded into the required shape.

[0028] A fixing plate 43 is fixedly installed on the front surface of the two front support columns 4, and two drive devices 7 for driving the folding device 6 to move are fixedly installed on the fixing plate 43. The fixing plate 43 is welded and fixed to the support column 4, providing an installation base for the drive device 7. The function of the drive device 7 is to control the movement of the folding device 6, driving the folding device 6 to rotate around the axis of the bearing seat 42, thereby folding the two ends of the fabric towards the middle, realizing the folding operation of the fabric. It is the power source and control core for realizing the folding action.

[0029] A pressing and shaping device 8 is fixedly installed between the upper surfaces of the four bearing seats 42. The pressing and shaping device 8 works in conjunction with the support plate 41 to perform final compression and shaping on the folded fabric after the fabric is folded, further fixing the shape of the fabric, improving the stability and aesthetics of the folded fabric, and ensuring that the fabric reaches the final shaping requirements after a series of processes. This is the final key step in the entire fabric folding and shaping process.

[0030] Combination Figure 1 As shown, a guide plate 15 is fixedly installed inside the workbench 1. The guide plate 15 is inclinedly arranged between the unloading end of the upper strip conveyor belt 14 and the feeding end of the two heating rollers 3. The guide plate 15 is inclined to guide the fabric smoothly from the upper strip conveyor belt 14 into the space between the two heating rollers 3. Since the fabric needs to accurately enter the heating rollers 3 for preheating when it is conveyed from the upper conveyor belt 14, the inclined design of the guide plate 15 allows the fabric to transition more smoothly to the heating rollers 3 under the combined action of gravity and conveying force, preventing the fabric from shifting or getting stuck during transport and ensuring the smooth progress of the heating process.

[0031] Combination Figure 1 and Figure 4As shown, the synchronous drive mechanism includes a servo motor, a transmission chain, and two sprockets. The servo motor is fixedly mounted on the rear surface of the workbench 1, and the output end of the servo motor is fixedly connected to the rear end of the upper left transmission shaft 12. The two sprockets are respectively sleeved on the front outer surfaces of the upper left transmission shaft 12 and the lower left transmission shaft 11, and the transmission chain is sleeved between the two sprockets.

[0032] The servo motor 161 serves as the power source, driving the upper left drive shaft 12 to rotate via its output shaft. Two sprockets 163 are respectively installed at the front ends of the upper and lower left drive shafts (upper drive shaft 12 and lower drive shaft 11). The transmission chain 162 connects the two sprockets 163, thereby transmitting the rotation of the upper drive shaft 12 to the lower drive shaft 11, achieving synchronous rotation of the upper and lower drive shafts, which in turn drives the upper and lower strip conveyor belts (upper strip conveyor belt 14 and lower strip conveyor belt 13) to move synchronously.

[0033] Combination Figure 1 and Figure 2 As shown, the positioning device 5 includes a hydraulic telescopic rod A51 fixedly installed in the workbench 1. A lifting plate 52 is fixedly installed on the upper surface of the hydraulic telescopic rod A51. Two pneumatic telescopic rods A53 are fixedly installed on the upper surface of the lifting plate 52. A vertical plate 54 is fixedly installed on the opposite end of each pneumatic telescopic rod A53. A U-shaped pressure plate 55 is fixedly installed on the upper surface of each vertical plate 54.

[0034] The hydraulic telescopic rod A51 first extends, causing the lifting plate 52 to rise, raising the pneumatic telescopic rod A53, the vertical plate 54, and the U-shaped pressure plate 55 to a suitable height, which is set according to the fabric thickness. Then, the pneumatic telescopic rods A53 on both sides retract, causing the vertical plate 54 and the U-shaped pressure plate 55 to move towards the fabric. When the U-shaped pressure plate 55 moves to a suitable position above the fabric, the hydraulic telescopic rod A51 retracts, causing the U-shaped pressure plate 55 to press down, thereby pressing and fixing the middle of the fabric onto the support plate 41.

[0035] Combination Figure 1 and Figure 3 As shown, the folding device 6 includes a drive shaft 61 rotatably disposed between two bearing seats 42. Multiple kits 62 are fixedly mounted on the outer surface of the drive shaft 61. The kits 62 are staggered with the lower strip conveyor belt 13, and folding plates 63 are fixedly mounted on the outer surface of the kits 62.

[0036] When the drive shaft 61 rotates, it drives the kit 62 and the folding plate 63 to rotate together, thereby folding the two ends of the fabric towards the center. The kit 62 is offset from the lower strip conveyor belt 13 to avoid interference with the conveyor belt during the folding process, ensuring smooth folding operation. This structure enables the folding device 6 to effectively fold the fabric, and it is compact and stable in operation.

[0037] Combination Figure 1 and Figure 3 As shown, the drive device 7 includes a pneumatic telescopic rod B71 and a gear 73. The gear 73 is sleeved on the outer surface of the front end of the corresponding drive shaft 61. The pneumatic telescopic rod B71 is fixedly installed on the upper surface of the fixed plate 43, and a rack plate 72 is fixedly installed on the upper surface of the telescopic end of the pneumatic telescopic rod B71. The rack plate 72 is meshed with the gear 73.

[0038] When the pneumatic telescopic rod B71 extends or retracts, it drives the rack plate 72 to move. Since the rack plate 72 meshes with the gear 73 sleeved on the front end of the drive shaft 61, the linear motion of the rack plate 72 is converted into the rotation of the gear 73, which in turn drives the drive shaft 61 to rotate, thereby realizing the folding action of the folding device 6.

[0039] Combination Figure 1 and Figure 4 As shown, the compression and shaping device 8 includes a support frame 81, which is fixedly connected to the bearing seat 42. A hydraulic telescopic rod B82 is fixedly installed through the upper surface of the support frame 81, and a pressure plate 83 is fixedly installed on the lower surface of the hydraulic telescopic rod B82. The pressure plate 83 is located above the support plate 41.

[0040] After the fabric is folded, the hydraulic telescopic rod B82 extends, causing the pressure plate 83 to move downwards, applying pressure to the folded fabric placed on the support plate 41 for final compression and shaping to achieve the desired shaping effect.

[0041] Combination Figure 1 As shown, a hoisting frame 9 is fixedly installed on the upper surface of the support frame 81, and a positioning sensor 91 is fixedly installed through the upper surface of the right end of the hoisting frame 9.

[0042] Positioning sensor 91 is used to detect whether the fabric has fully entered the folding area. When the fabric has fully entered the folding area, positioning sensor 91 is triggered, at which point the drive mechanism stops working, ensuring that the fabric is in the accurate position for subsequent positioning, hemming, and pressing and shaping operations, thus ensuring the accuracy and stability of the entire processing process and improving product quality.

[0043] In actual manufacturing and use, the positioning sensor 91 is electrically connected to the control system of the servo motor. When the positioning sensor 91 detects that the fabric is in place and sends a signal, the control system will respond quickly and immediately send a command to the servo motor 161 to stop its operation.

[0044] Working principle: When in use, the fabric to be folded is laid flat on the upper strip conveyor belt 14. The synchronous drive mechanism drives the upper and lower strip conveyor belts 14 to move synchronously to the right through the upper drive shaft 12 and the lower drive shaft 11. The fabric is preheated at high temperature by the guide plate 15 driven by the upper strip conveyor belt 14. Then, it enters the folding area driven by the lower strip conveyor belt 13. After the fabric has completely reached the folding area, the fabric triggers the positioning sensor 91 above. At this time, the drive mechanism stops working. Then, the positioning device 5 is used to position the fabric at the center. During positioning, firstly, the hydraulic telescopic rod A51 is extended, and the lifting plate 52 drives the two pneumatic telescopic rods A53 to move upward. After moving upward a certain distance (the distance is set according to the thickness of the fabric to be folded), the two starting telescopic rods A53 on both sides are retracted, which drives the vertical plate 54 and the U-shaped pressure plate 55 to move towards the fabric. When the U-shaped pressure plate 55 moves above the fabric, the hydraulic telescopic rod A51 retracts, which drives the U-shaped pressure plate 55 to move downward to press the fabric at the center.

[0045] Then, the pneumatic telescopic rod B71 in the drive device 7 drives the corresponding drive shaft 61 to rotate through the cooperation of the rack plate 73 and the gear 72, flipping the folding plate 63 towards the fabric and folding both sides of the fabric towards the center. After folding, the two folding devices 6 are reset, and the synchronous drive mechanism is started again to drive the lower strip conveyor belt 13 to move. The lower strip conveyor belt 13 drives the folded fabric on both sides to move a certain distance towards the right folding device 6 (the start and stop control of this distance is preset according to the center line of the fabric after folding on both sides in actual application). When the center line of the fabric after folding on both sides reaches the folding working area of ​​the right folding device 6, the synchronous drive mechanism is stopped. Then, the corresponding drive device 7 is used again to drive the right folding device 6 to perform the folding work, folding the fabric in half.

[0046] After the fabric is folded in half, the hydraulic telescopic rod B82 extends to drive the pressure plate 83 to move down, performing the final squeezing and shaping work on the folded fabric. After squeezing and shaping, the synchronous drive mechanism is started, and the lower strip conveyor belt 13 is used to transport the folded fabric to the right.

[0047] The entire process of folding the fabric can be preheated from both sides by two heating rollers 3. Then, the fabric is quickly folded and positioned by the positioning device 5, the folding device 6 and the pressing and shaping device 8 on the right side. The overall shaping is convenient and quick, and the shaping effect is good.

Claims

1. A folding fabric high-temperature setting roller, comprising a worktable (1), characterized in that: The workbench (1) is equipped with two lower drive shafts (11) and two upper drive shafts (12). Multiple lower strip conveyor belts (13) are installed between the two lower drive shafts (11), and multiple upper strip conveyor belts (14) are installed between the two upper drive shafts (12). The outer surface of the workbench (1) is equipped with a synchronous drive mechanism for synchronously driving the lower drive shaft (11) on the left and the upper drive shaft (12) on the left to move synchronously. Two roller seats (2) are fixedly connected to the worktable (1) on the right side of the upper strip conveyor belt (14), and two heating roller bodies (3) are rotatably installed between the two roller seats (2). Four support columns (4) are fixedly installed inside the workbench (1). The four support columns (4) are arranged in a rectangular pattern on the outside of the lower strip conveyor belt (13). A support plate (41) is fixedly installed between the tops of the four support columns (4). The support plate (41) is located on the inside of the lower strip conveyor belt (13). The workbench (1) is fixedly equipped with a positioning device (5). The positioning device (5) is used in conjunction with the support plate (41) to press and fix the middle part of the fabric onto the support plate (41). Bearing seats (42) are fixedly installed on the opposite surfaces of the support columns (4) on both the left and right sides. Folding devices (6) are rotatably installed between the two corresponding bearing seats (42) at the front and back. The folding devices (6) are used in conjunction with the support plate (41) to fold the two ends of the fabric toward the middle. A fixing plate (43) is fixedly installed on the front surface of the two front support columns (4), and two driving devices (7) for driving the folding device (6) to move are fixedly installed on the fixing plate (43). A pressing and shaping device (8) is fixedly installed between the upper surfaces of the four bearing seats (42). The pressing and shaping device (8) is used in conjunction with the support plate (41) to press and shape the folded fabric.

2. The folding fabric high-temperature setting roller according to claim 1, characterized in that: The workbench (1) is fixedly installed with a guide plate (15), which is inclinedly arranged between the unloading end of the upper strip conveyor belt (14) and the feeding end of the two heating rollers (3).

3. The folding fabric high-temperature setting roller according to claim 1, characterized in that: The synchronous drive mechanism includes a servo motor, a transmission chain and two sprockets. The servo motor is fixedly installed on the rear surface of the workbench (1), and the output end of the servo motor is fixedly connected to the rear end of the upper transmission shaft (12) on the left. The two sprockets are respectively sleeved on the front outer surfaces of the upper transmission shaft (12) on the left and the lower transmission shaft (11) on the left. The transmission chain is sleeved between the two sprockets.

4. The folding fabric high-temperature setting roller according to claim 1, characterized in that: The positioning device (5) includes a hydraulic telescopic rod A (51) fixedly installed in the workbench (1). A lifting plate (52) is fixedly installed on the upper surface of the hydraulic telescopic rod A (51). Two pneumatic telescopic rods A (53) are fixedly installed on the upper surface of the lifting plate (52). A vertical plate (54) is fixedly installed on the opposite end of each pneumatic telescopic rod A (53). A U-shaped pressure plate (55) is fixedly installed on the upper surface of each vertical plate (54).

5. A folding fabric high-temperature setting roller according to claim 1, characterized in that: The folding device (6) includes a drive shaft (61) rotatably disposed between two bearing seats (42). Multiple kits (62) are fixedly mounted on the outer surface of the drive shaft (61). The kits (62) are staggered with the lower strip conveyor belt (13), and folding plates (63) are fixedly mounted on the outer surface of the kits (62).

6. A folding fabric high-temperature setting roller according to claim 5, characterized in that: The drive device (7) includes a pneumatic telescopic rod B (71) and a gear (73). The gear (73) is sleeved on the outer surface of the front end of the corresponding drive shaft (61). The pneumatic telescopic rod B (71) is fixedly installed on the upper surface of the fixed plate (43), and a rack plate (72) is fixedly installed on the upper surface of the telescopic end of the pneumatic telescopic rod B (71). The rack plate (72) meshes with the gear (73).

7. A folding fabric high-temperature setting roller according to claim 1, characterized in that: The pressing and shaping device (8) includes a support frame (81), which is fixedly connected to the bearing seat (42). A hydraulic telescopic rod B (82) is fixedly installed through the upper surface of the support frame (81), and a pressure plate (83) is fixedly installed on the lower surface of the hydraulic telescopic rod B (82). The pressure plate (83) is located above the support plate (41).

8. A folding fabric high-temperature setting roller according to claim 7, characterized in that: A hoisting frame (9) is fixedly installed on the upper surface of the support frame (81), and a positioning sensor (91) is fixedly installed through the upper surface of the right end of the hoisting frame (9).

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