Elevator belt tensioning detection device

Abstract

The utility model discloses a hoister belt tensioning detection device, which comprises a case and a swing frame, the swing frame is arranged in the case and extends to the outside of the case, a first hoister is mounted in the case on one side of the swing frame, a belt body is sleeved on the outer wall of the first hoister, and the first hoister and the second hoister are arranged in the case on the other side of the swing frame. A supporting frame is installed on the side wall of the machine box, a tightening nut is movably installed at the bottom end of the supporting frame, a tightening bolt is movably installed on the side wall of the tightening nut, a rotating pin shaft is movably installed in the machine box, and the swing frame is movably connected with the machine box through the rotating pin shaft. According to the belt tensioning detection device, the internal structure of the belt tensioning detection device is very stable when the tensioning device runs, the tensioning degree of the belt is conveniently and rapidly adjusted, and the convenience of adjusting the tensioning degree of the belt through the belt tensioning detection device is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of belt tension detection devices, specifically a belt tension detection device for a hoist. Background Technology

[0002] The tension detection device can monitor the belt tension in real time, preventing problems such as belt breakage and slippage caused by excessive looseness or tightness. This avoids production interruptions and safety accidents caused by belt failures. By precisely controlling the belt tension, it reduces belt wear and sway, extends belt service life, reduces replacement frequency and maintenance costs. Appropriate belt tension can ensure smooth power transmission, reduce energy loss, and improve the overall working efficiency of the equipment.

[0003] As disclosed in the authorization announcement number CN207932484U, an automatic tensioning device for a hoist includes a drive mechanism arranged vertically, a belt sleeved on the drive mechanism, and a cover located outside the belt. Several buckets are fixedly connected to the outside of the belt and are evenly arranged. The drive mechanism includes a pulley, a bearing, and a bearing seat. The tensioning device includes a support, a double connecting rod, and a material box. The support is fixedly connected to the bearing seat at the bottom of the hoist. The double connecting rod consists of two rods that are hinged together. The hinge point is located above the support. One end of the double connecting rod is fixedly connected to the material box, and the other end is hinged to the cover.

[0004] Although it achieves the function of keeping the lifting belt in a taut state during operation without the need for manual adjustment for a certain period of time, thus achieving automatic tensioning, it can effectively prevent the lifting belt from slipping during operation, thus avoiding wear on the lifting machine casing and damage to the lifting machine or lifting belt. It effectively enhances the protection of the lifting belt and lifting machine, greatly extends the service life, and effectively improves the stability of operation, greatly improving work efficiency. At the same time, it can effectively prevent the lifting belt from running off-center, improving the accuracy of operation.

[0005] However, this does not solve the problem that existing belt tension detection devices are generally not conducive to the operation of the tensioning device, making the internal structure of the belt tension detection device very stable and not conducive to convenient adjustment of belt tension, thus affecting the convenience of adjusting belt tension. Utility Model Content

[0006] The purpose of this utility model is to provide a belt tension detection device for a hoist, so as to solve the problem mentioned in the background art that the belt tension detection device is not convenient to adjust the belt tension when the tensioning device is running, which makes the internal structure of the belt tension detection device very stable and inconvenient to adjust the belt tension.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hoist belt tension detection device, comprising a housing and a swing frame. The swing frame is disposed inside the housing and extends to the outside of the housing. A first hoist is installed inside the housing on one side of the swing frame. A belt body is fitted onto the outer wall of the first hoist. A support frame is installed on the side wall of the housing. A tightening nut is movably installed at the bottom end of the support frame. A tightening bolt is movably installed on the side wall of the tightening nut. A rotating pin is movably installed inside the housing. The swing frame is movably connected to the housing via the rotating pin. Three sets of tension springs with equal spacing are installed at the bottom end of the swing frame. A tension plate is installed at the end of the tension springs away from the swing frame. A spring rod is installed at the bottom end of the tension plate. The spring rod extends to the outside of the support frame and is movably connected to the tightening nut. The tightening bolt passes through the tightening nut and contacts the spring rod. A switch pressure plate is installed on the side of the swing frame away from the tension springs. A limit switch bracket is installed on the side wall of the housing above the support frame.

[0008] Preferably, a first limit switch is installed on the side wall of the limit switch bracket, and the first limit switch is in contact with the switch pressure plate.

[0009] Preferably, a connecting frame is installed on the side wall of the swing frame, and a cover is installed on the side of the connecting frame away from the swing frame.

[0010] Preferably, a support base is installed at the top of the swing frame, and a servo motor is installed at the top of the support base.

[0011] Preferably, the output end of the servo motor is equipped with a rotating shaft that extends into the interior of the housing.

[0012] Preferably, a small sprocket is fitted onto the surface of the rotating shaft inside the housing, and a rotating shaft is movably mounted on the side of the swing frame inside the chassis near the rotating pin.

[0013] Preferably, the rotating shaft extends through the chassis into the interior of the housing, and a large sprocket is fitted onto the surface of the rotating shaft inside the housing.

[0014] Preferably, chains are movably mounted on the surfaces of the small sprocket and the large sprocket, the small sprocket, the large sprocket, and the chains mesh with each other, and the belt body is slidably connected to the rotating shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the belt tension detection device not only makes the internal structure of the belt tension detection device very stable when the tensioning device is running, but also facilitates the convenient adjustment of the belt tension, realizing the convenience of adjusting the belt tension of the belt tension detection device.

[0016] A servo motor drives a rotating shaft to rotate, which in turn drives a small sprocket. The small sprocket, via a chain, drives a large sprocket, which in turn drives the rotating shaft. Supported by a swing frame, the rotating shaft causes the belt body to rotate on the surface of the first hoist. If the switch plate at the bottom of the swing frame disengages from the first limit switch, it indicates that the belt is too loose. The tightening bolt needs to be loosened, causing the spring lever to move downwards on the support frame and the tightening nut. The spring lever then drives the tension plate, tension spring, and swing frame to move downwards. Under the action of the rotating pin, the rotating shaft and the belt body move upwards, thus tightening the belt. When the appropriate tension is achieved, the switch plate contacts the first limit switch, indicating that the belt tension is acceptable. The tightening bolt is then tightened to fix the position of the spring lever, maintaining the belt tension at this point. During operation, the internal structure of the belt tension detection device remains very stable, facilitating convenient adjustment of the belt tension and realizing the convenience of adjusting belt tension using the belt tension detection device. Attached Figure Description

[0017] Figure 1 This is a front view cross-sectional structural diagram of the cover of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a front view schematic diagram of the chain structure of this utility model;

[0020] Figure 4 This is a front view structural diagram of the present utility model;

[0021] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Chassis; 2. Swing frame; 3. Belt body; 4. Cover; 5. Tension spring; 6. Tension plate; 7. Spring rod; 8. Tightening nut; 9. Support frame; 10. Large sprocket; 11. Rotating shaft; 12. Chain; 13. Rotating shaft; 14. Rotating pin; 15. Limit switch bracket; 16. First limit switch; 17. Switch pressure plate; 18. Small sprocket; 19. Servo motor; 20. Support base; 21. Connecting frame; 22. First hoist; 23. Tightening bolt. Detailed Implementation

[0023] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0024] Please see Figure 1-5 This utility model provides an embodiment of a hoist belt tension detection device, comprising a housing 1 and a swing frame 2. The swing frame 2 is disposed inside the housing 1 and extends to the outside of the housing 1. A first hoist 22 is installed inside the housing 1 on one side of the swing frame 2. A belt body 3 is fitted onto the outer wall of the first hoist 22. A support frame 9 is installed on the side wall of the housing 1. A tightening nut 8 is movably installed at the bottom end of the support frame 9. A tightening bolt 23 is movably installed on the side wall of the tightening nut 8. A rotating pin is movably installed inside the housing 1. 14. The swing frame 2 is movably connected to the chassis 1 via a rotating pin 14. Three sets of tension springs 5 ​​with equal spacing are installed at the bottom of the swing frame 2. A tension plate 6 is installed at the end of the tension spring 5 away from the swing frame 2. A spring rod 7 is installed at the bottom of the tension plate 6. The spring rod 7 extends to the outside of the support frame 9 and is movably connected to the tightening nut 8. The tightening bolt 23 passes through the tightening nut 8 and contacts the spring rod 7. A switch pressure plate 17 is installed on the side of the swing frame 2 away from the tension spring 5. A limit switch bracket 15 is installed on the side wall of the chassis 1 above the support frame 9.

[0025] A first limit switch 16 is installed on the side wall of the limit switch bracket 15, and the first limit switch 16 is in contact with the switch pressure plate 17;

[0026] A connecting frame 21 is installed on the side wall of the swing frame 2. A cover 4 is installed on the side of the connecting frame 21 away from the swing frame 2. A support base 20 is installed on the top of the swing frame 2. A servo motor 19 is installed on the top of the support base 20. A rotating shaft 11 is installed at the output end of the servo motor 19. The rotating shaft 11 extends into the interior of the cover 4.

[0027] A small sprocket 18 is fitted on the surface of the rotating shaft 11 inside the casing 4. A rotating shaft 13 is movably installed on the side of the swing frame 2 inside the chassis 1 near the rotating pin 14. The rotating shaft 13 extends through the chassis 1 and into the interior of the casing 4. A large sprocket 10 is fitted on the surface of the rotating shaft 13 inside the casing 4.

[0028] Chains 12 are movably mounted on the surfaces of the small sprocket 18 and the large sprocket 10. The small sprocket 18, the large sprocket 10, and the chain 12 mesh with each other. The belt body 3 is slidably connected to the rotating shaft 13.

[0029] When checking the belt tension of the hoist, the servo motor 19 is turned on. Supported by the support base 20, the servo motor 19 drives the rotating shaft 11 to rotate. The rotating shaft 11 drives the small sprocket 18 to rotate. With the small sprocket 18 meshing with the chain 12 and the rotating shaft 13, the small sprocket 18 drives the large sprocket 10 to rotate via the chain 12. The large sprocket 10 drives the rotating shaft 13 to rotate. Supported by the swing frame 2, the rotating shaft 13 drives the belt body 3 to rotate on the surface of the first hoist 22. At this time, if the switch plate 17 at the bottom of the swing frame 2 disengages from the first limit switch 16, it indicates that the belt is too loose. The tightening bolt 23 needs to be loosened so that the spring pull rod 7 is engaged with the support frame 9 and tightened. The surface of nut 8 moves downward, and spring rod 7 drives tension plate 6, tension spring 5, and swing frame 2 to move downward. Under the action of rotating pin 14, rotating shaft 13 and belt body 3 move upward, so that belt body 3 is tightened. When the appropriate tension is reached, switch plate 17 contacts first limit switch 16, indicating that the belt tension is qualified. Tighten tightening bolt 23 to fix the position of spring rod 7, so that belt body 3 maintains the current tension. When the tensioning device is running, the internal structure of belt tension detection device is very stable, which facilitates convenient adjustment of belt tension and realizes the convenience of belt tension detection device in adjusting belt tension.

[0030] Working principle: When detecting the tension of the hoist belt, the servo motor 19 drives the rotating shaft 11 to rotate. The rotating shaft 11 drives the small sprocket 18 to rotate, which in turn drives the large sprocket 10 to rotate via the chain 12. The large sprocket 10 drives the rotating shaft 13 to rotate. Supported by the swing frame 2, the rotating shaft 13 drives the belt body 3 to rotate on the surface of the first hoist 22. At this time, if the switch plate 17 at the bottom of the swing frame 2 disengages from the first limit switch 16, it indicates that the belt is too loose. The tightening bolt 23 needs to be loosened, causing the spring rod 7 to move downward on the surface of the support frame 9 and the tightening nut 8. Pull rod 7 drives tension plate 6, tension spring 5, and swing frame 2 to move downwards. Under the action of rotating pin 14, it drives rotating shaft 13 and belt body 3 to move upwards, thereby tightening belt body 3. When the appropriate tension is reached, switch pressure plate 17 contacts first limit switch 16, indicating that the belt tension is qualified. Tighten tightening bolt 23 to fix the position of spring pull rod 7, so that belt body 3 maintains the current tension. When the tensioning device is running, the internal structure of the belt tension detection device is very stable, which facilitates the convenient adjustment of belt tension and completes the use of belt tension detection device.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An elevator belt tension detection device, characterized by: The utility model provides a swing frame (2) and cabinet (1) are included, the inside of cabinet (1) is provided with swing frame (2), and swing frame (2) extends to the outside of cabinet (1), the inside of cabinet (1) is installed with first hoist (22) on the side of swing frame (2), the outer wall of first hoist (22) is sleeved with belt body (3), the sidewall of cabinet (1) is installed with support frame (9), the bottom of support frame (9) is movably installed with tightening nut (8), the sidewall of tightening nut (8) is movably installed with tightening bolt (23), the inside of cabinet (1) is movably installed with rotating pin (14), swing frame (2) is movably connected with cabinet (1) through rotating pin (14), the bottom of swing frame (2) is installed with three groups of equal-interval stretch spring (5), the one end of stretch spring (5) away from swing frame (2) is installed with stretch plate (6), the bottom of stretch plate (6) is installed with spring pull rod (7), spring pull rod (7) extends to the outside of support frame (9) and is movably connected with tightening nut (8), tightening bolt (23) passes through tightening nut (8) and is in contact with spring pull rod (7), the side of swing frame (2) away from stretch spring (5) is installed with switch pressure plate (17), the sidewall of support frame (9) is installed with travel switch support (15) on the side wall of cabinet (1) above.

2. The belt tension detection device for an elevator according to claim 1, characterized in that: The sidewall of travel switch support (15) is installed with first travel switch (16), and the first travel switch (16) is in contact with the switch pressure plate (17).

3. The belt tension detection device for an elevator according to claim 1, characterized in that: The sidewall of the swing frame (2) is installed with the adapter frame (21), and the adapter frame (21) is installed with the cover (4) away from the swing frame (2).

4. The belt tension detection device for an elevator according to claim 1, characterized by: The top end of the swing frame (2) is installed with the support seat (20), and the top end of the support seat (20) is installed with the servo motor (19).

5. A belt tension detection device for an elevator as defined in claim 4, characterized by The output end of the servo motor (19) is installed with the rotating shaft (11), and the rotating shaft (11) extends to the inside of the cover (4).

6. The belt tension detection device for an elevator according to claim 3, characterized by: The surface of the rotating shaft (11) in the inside of the cover (4) is sleeved with the small chain wheel (18), and the side of the swing frame (2) in the inside of the cabinet (1) close to the rotating pin (14) is movably installed with the rotating shaft (13).

7. A belt tension detection device for an elevator as defined in claim 6, characterized by The rotating shaft (13) extends to the inside of the cover (4) through the cabinet (1), and the surface of the rotating shaft (13) in the inside of the cover (4) is sleeved with the large chain wheel (10).

8. A belt tension detection device for an elevator as defined in claim 7, characterized by The surface of the small chain wheel (18) and the large chain wheel (10) is movably installed with the chain (12), the small chain wheel (18), the large chain wheel (10) and the chain (12) are engaged, and the belt body (3) is slidably connected with the rotating shaft (13).

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