Moment limiter device

Abstract

The utility model belongs to the technical field of moment limiters, and particularly relates to a moment limiter device which comprises a power input shaft and a wire torsion output shaft, an outer side frame is assembled on the outer side between the power input shaft and the wire torsion output shaft, and at least one first transmission piece is arranged on the outer side of the power input shaft. An assembling groove body corresponding to the first transmission part is formed in the end, close to the power input shaft, of the outer side frame, external shallow grooves are formed in the two ends of the assembling groove body, a deep groove is formed in the center of the middle of the assembling groove body, and the first transmission part is located at the position where the deep groove is located. At least one second transmission piece is fixed to the outer side of the wire torsion output shaft, and assembling special-shaped clamping grooves corresponding to the second transmission pieces are formed in the outer side frame. The protection torque value can be adjusted at any time according to different application conditions and requirements, so that kinetic energy is limited, the requirement for door opening and closing kinetic energy is met, and safety of personnel and equipment is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of torque limiters, and in particular relates to a torque limiter device. Background Art

[0002] The torque limiter device is a safety protection device used to limit the torque or kinetic energy of a mechanical device. It is widely used in hinged automatic doors in the elevator industry, as well as other industries that require precise torque limitation, such as various hinged door usage scenarios or devices that require speed (force) limitation. The torque limiter device can effectively protect personnel and equipment safety and prevent injuries or accidents caused by excessive torque or kinetic energy.

[0003] At present, various types of torque limiter devices have been proposed, one of which is to set a reset button. After the torque exceeds the limit, the torque limiter device can be restored to a normal working state by pressing the reset button, thereby improving the use efficiency and safety;

[0004] However, although the above-mentioned and existing torque limiters have their own advantages, they also have some common defects, such as:

[0005] Currently, there is no similar mechanical device that can complete the torque limiting function that can be adjusted at any time. Most of them can only preset the maximum torque and cannot be adjusted on site, or judge the torque by electrical means such as current and speed, which has a large deviation and cannot accurately judge the change of kinetic energy during operation. As a result, the adaptability and accuracy of the torque limiter device are insufficient and cannot meet different application conditions and requirements;

[0006] Therefore, it is necessary to provide a novel torque limiter device to solve the above-mentioned defects. Utility Model Content

[0007] The purpose of the utility model is to provide a torque limiter device, which can adjust the protection torque value at any time according to different application conditions and requirements, thereby limiting kinetic energy, meeting the requirements for door opening and closing kinetic energy, and protecting the safety of personnel and equipment.

[0008] The technical solution adopted by the utility model is as follows:

[0009] A torque limiter device, comprising a power input shaft and a torsion output shaft, wherein an outer frame is mounted on the outer side between the power input shaft and the torsion output shaft, at least one first transmission member is arranged on the outer side of the power input shaft, an assembly groove body corresponding to the first transmission member is arranged at one end of the outer frame close to the power input shaft, both ends of the assembly groove body are arranged with external shallow grooves, and a deep groove is arranged at the middle center of the assembly groove body, and the first transmission member is located at the position where the deep groove is located;

[0010] At least one second transmission member is fixed on the outer side of the torsion output shaft, and an assembly special-shaped slot corresponding to the second transmission member is arranged inside the outer frame, and a first limiting hole is arranged at one end of the assembly special-shaped slot close to the torsion output shaft, and two opposite second limiting holes are arranged at one end of the assembly special-shaped slot away from the torsion output shaft, and the second transmission member is located at the position where the first limiting hole is located;

[0011] An elastic component is also arranged on the outer side of the wire torsion output shaft.

[0012] The elastic component includes a torsion adjustment spring threadedly connected to the outside of the wire torsion output shaft, and a torsion spring is fixed between the torsion adjustment spring and the outer frame and located on the outside of the wire torsion output shaft.

[0013] A locking nut is also threadedly connected on the outer side of the wire torsion output shaft and located on the side of the torsion adjustment spring away from the wire torsion spring.

[0014] The two second limiting hole grooves and the first limiting hole groove are both arranged in a streamlined arc shape.

[0015] The first transmission member and the second transmission member are both cylindrical.

[0016] The power input shaft and the torsion output shaft are both provided with special-shaped holes and grooves inside.

[0017] The technical effects achieved by the utility model are:

[0018] The utility model can adjust the protection torque value at any time according to different application conditions and requirements, thereby limiting the kinetic energy, meeting the requirements for the kinetic energy of door opening and closing, and protecting the safety of personnel and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure between the middle and outer frames, the assembly slot and the torsion adjustment spring of the utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Power input shaft; 2. Wire torsion output shaft; 3. Outer frame; 4. First transmission member; 5. Second transmission member; 6. Deep groove; 7. External shallow groove; 8. First limit hole groove; 9. Second limit hole groove; 10. Assembly special-shaped slot; 11. Wire torsion spring; 12. Torque adjustment spring; 13. Locking nut; 14. Assembly slot body. DETAILED DESCRIPTION

[0024] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0025] like Figure 1-3 As shown, the torque limiter device includes a power input shaft 1 and a torsion output shaft 2. The power input shaft 1 and the torsion output shaft 2 are both provided with special-shaped hole grooves inside. Through this arrangement, the power input shaft 1 and the torsion output shaft 2 will not idle when connected to external equipment or components. An outer frame 3 is installed on the outer side between the power input shaft 1 and the torsion output shaft 2. When the power input shaft 1 rotates, the torsion output shaft 2 can be driven to rotate through the setting of the outer frame 3. At least one first transmission member 4 is arranged on the outer side of the power input shaft 1, and an assembly groove body 14 corresponding to the first transmission member 4 is arranged at one end of the outer frame 3 close to the power input shaft 1. The assembly groove body 14 is arranged in an arc shape, and external shallow grooves 7 are arranged at both ends of the assembly groove body 14, and a deep groove 6 is arranged at the center of the middle of the assembly groove body 14, and the first transmission member 4 is located at the position where the deep groove 6 is located.

[0026] According to the above description, when the power input shaft 1 rotates, the first transmission member 4 thereon can be driven to rotate, and the first transmission member 4 is located at the position of the deep groove 6, so that when the first transmission member 4 rotates, a certain resistance and friction force are generated between the first transmission member 4 and the outer frame 3, thereby being able to drive the outer frame 3 to rotate;

[0027] At least one second transmission member 5 is fixed to the outside of the torsion output shaft 2, and an assembly special-shaped slot 10 corresponding to the second transmission member 5 is arranged inside the outer frame 3. The assembly special-shaped slot 10 is an equilateral triangle as a whole, and the second transmission member 5 is located in one of the inner angles of this equilateral triangle. The end of the assembly special-shaped slot 10 close to the torsion output shaft 2 is provided with a first limiting hole groove 8, and the end of the assembly special-shaped slot 10 away from the torsion output shaft 2 is provided with two opposite second limiting hole grooves 9. The two second limiting hole grooves 9 and the first limiting hole groove 8 are both streamlined arc-shaped. Through this arrangement, the second transmission member 5 can be more conveniently Transfer from the position of the first limiting hole groove 8 to the position of the second limiting hole groove 9, the second transmission member 5 is located at the position of the first limiting hole groove 8, the first transmission member 4 and the second transmission member 5 are both cylindrical, through this arrangement, when the first transmission member 4 and the second transmission member 5 respectively follow the power input shaft 1 and the line torsion output shaft 2 to rotate, when the resistance is large, the first transmission member 4 can be assembled along the groove body 14 from the position of the deep groove 6 to the position of the external shallow groove 7, and the second transmission member 5 is assembled on the inner side of the special-shaped groove 10, so as to reach the position of the second limiting hole groove 9 from the position of the first limiting hole groove 8;

[0028] An elastic component is also arranged on the outer side of the torsion output shaft 2 .

[0029] Refer to the attached Figure 1 and attached Figure 2 As shown, the elastic component includes a torsion adjusting spring 12 threadedly connected to the outside of the line torsion output shaft 2, a line torsion spring 11 is fixed between the torsion adjusting spring 12 and the outer frame 3 and located on the outside of the line torsion output shaft 2, the line torsion spring 11 is used to squeeze the outer frame 3, and the torsion adjusting spring 12 is used to position the line torsion spring 11, so that the line torsion spring 11 can change its elasticity according to the position of the torsion adjusting spring 12, and a locking nut 13 is also threadedly connected to the outside of the line torsion output shaft 2 and located on the side of the torsion adjusting spring 12 away from the line torsion spring 11. Through the setting of the locking nut 13, the locking nut 13 can be tightened for the torsion adjusting spring 12, so that the torque adjusting spring 12 will not be loose and reversed;

[0030] In the above description, when the power input shaft 1 rotates, the outer frame 3 is driven to rotate through the setting of the first transmission member 4, and then the outer frame 3 drives the torsion output shaft 2 to rotate through the setting of the assembly special-shaped slot 10. In the overall rotation process, when the rotation resistance of one end of the torsion output shaft 2 is large, the rotation of the power input shaft 1 and the torsion output shaft 2 tends to be asynchronous. The outer frame 3 is pulled toward itself through the torsion of the torsion spring 11. During the movement of the outer frame 3, the second transmission member 5 moves along the assembly special-shaped slot 10 to the inner side of one of the second limiting hole slots 9, and the A transmission member 4 will move from the position of the deep groove 6 to the position of the outer shallow groove 7, so that when the power input shaft 1 rotates, it will not drive the torsion output shaft 2 to rotate, thereby achieving the purpose of limiting torque, limiting kinetic energy, and protecting equipment. When the resistance at the torsion output shaft 2 disappears, the power input shaft 1 can be controlled to reverse through an external driving source, so that the first transmission member 4 moves back to the deep groove 6, and the outer frame 3 is driven to reset through the reset of the torsion spring 11, so that the second transmission member 5 returns to the position of the first limiting hole groove 8, so that the power input shaft 1 can drive the torsion output shaft 2 to rotate again;

[0031] Moreover, this solution can also be replaced by a magnetic conduction method, and the torque setting value is determined by the magnetic conduction gap.

[0032] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A torque limiter device, comprising a power input shaft (1) and a torsion output shaft (2), characterized in that: An outer frame (3) is installed on the outer side between the power input shaft (1) and the torsion output shaft (2); at least one first transmission member (4) is arranged on the outer side of the power input shaft (1); an assembly groove (14) corresponding to the first transmission member (4) is arranged at one end of the outer frame (3) close to the power input shaft (1); both ends of the assembly groove (14) are provided with external shallow grooves (7); a deep groove (6) is arranged at the exact center of the middle of the assembly groove (14); and the first transmission member (4) is located at the position where the deep groove (6) is located; At least one second transmission member (5) is fixed on the outer side of the torsion output shaft (2); an assembly special-shaped slot (10) corresponding to the second transmission member (5) is arranged inside the outer frame (3); a first limiting hole slot (8) is arranged at one end of the assembly special-shaped slot (10) close to the torsion output shaft (2); two opposite second limiting hole slots (9) are arranged at one end of the assembly special-shaped slot (10) away from the torsion output shaft (2); and the second transmission member (5) is located at the position where the first limiting hole slot (8) is located; An elastic component is also arranged on the outer side of the torsion output shaft (2).

2. The torque limiter device according to claim 1, characterized in that: The elastic component comprises a torsion adjustment spring (12) threadedly connected to the outside of the torsion output shaft (2), and a torsion spring (11) is fixed between the torsion adjustment spring (12) and the outer frame (3) and located on the outside of the torsion output shaft (2).

3. The torque limiter device according to claim 2, characterized in that: A locking nut (13) is also threadedly connected to the outside of the torsion output shaft (2) and located on the side of the torsion adjustment spring (12) away from the torsion spring (11).

4. The torque limiter device according to claim 1, characterized in that: The two second limiting hole grooves (9) and the first limiting hole groove (8) are both arranged in a streamlined arc shape.

5. The torque limiter device according to claim 1, characterized in that: The first transmission member (4) and the second transmission member (5) are both cylindrical.

6. The torque limiter device according to claim 1, characterized in that: The power input shaft (1) and the torsion output shaft (2) are both provided with special-shaped hole grooves inside.

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