CN210919891U

CN210919891U - Torsion limiter

Info

Publication number: CN210919891U
Application number: CN201921908501.4U
Authority: CN
Inventors: 张永明
Original assignee: Shaoxing Industrial Science Design And Research Institute Co ltd
Current assignee: Shaoxing Industrial Science Design And Research Institute Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-07-03
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses a torque limiter, mount pad including the square form, the inside through-hole that is the echelonment in cross-section that is equipped with of mount pad, with the inside first region that divide into of mount pad, the second is regional, be equipped with two bearings in the first region, be equipped with the midbody subassembly in the second region, and both contact surfaces are equipped with lubricating grease, the bearing in-connection has coaxial transmission shaft with it, the midbody subassembly is connected to transmission shaft one end, the other end extends outside the mount pad, the cover is equipped with the clamp plate that is located the bearing outside on the transmission shaft, the clamp plate is fixed in the mount pad terminal surface through cross screw, the apron is installed. Through setting up the duplex bearing, and be equipped with lubricating grease between midbody subassembly and the mount pad contact surface, make the inside transmission clearance of device little, improve mechanical efficiency, install clamp plate and apron respectively at the mount pad front and back end, block inside outside dust gets into the device, still be equipped with sealed the pad between clamp plate and the bearing, increase the whole seal of device, improve waterproof performance.

Description

Torsion limiter

Technical Field

The utility model belongs to the technical field of braking equipment, concretely relates to torque limiter.

Background

The torque limiter (also called torque limiter, safety coupling, safety clutch, BMOOM limiter), is a part to connect the prime mover and the working machine, the main function is overload protection, when the overload or mechanical failure causes the required torque to exceed the set value, the torque limiter limits the torque transmitted by the transmission system in the form of slipping, while slipping, it can also stop the motor and the reducer by a signal output, when the overload situation disappears, the connection is recovered by itself. This prevents mechanical damage and avoids costly down time losses. The torque limiter uses a spring loaded friction surface with a nut or bolt to adjust the spring force to preset its slip torque. The torque limiter can be divided into a friction type torque limiter and a steel ball type torque limiter (a ball type torque limiter) according to the working principle, and has the application range of the industries of electronic equipment, automatic production lines, conveyors and the like, but the conventional torque limiter has overlarge transmission clearance and low mechanical efficiency.

Disclosure of Invention

An object of the utility model is to provide a torque limiter possesses simple structure, transmission clearance is little, advantage that mechanical efficiency is high.

The utility model adopts the technical proposal that: torque limiter, the mount pad including the square form, the inside through-hole that is equipped with the cross-section for the echelonment of mount pad, divide into first region with the mount pad is inside, the second is regional, be equipped with two bearings in the first region, be equipped with the midbody subassembly in the second region, and both contact surfaces are equipped with lubricating grease, the bearing in-connection has the coaxial transmission shaft with it, the midbody subassembly is connected to transmission shaft one end, the other end extends outside the mount pad, the cover is equipped with the clamp plate that is located the bearing outside on the transmission shaft, the clamp plate passes through cross fix with screw in mount pad terminal surface, the apron is installed. Through setting up the duplex bearing, and be equipped with lubricating grease between midbody subassembly and the mount pad contact surface, make the inside transmission clearance of device little, improve mechanical efficiency, install clamp plate and apron respectively at the mount pad front and back end, block inside outside dust gets into the device, still be equipped with sealed the pad between clamp plate and the bearing, increase the whole seal of device, improve waterproof performance.

Preferably, the intermediate assembly comprises a cylinder, a first through hole is formed in the end face of the cylinder, a compression spring is arranged in the first through hole, a steel ball seat cushion is arranged on one side of the cylinder, a second through hole coaxial with the first through hole is formed in the steel ball seat cushion, a steel ball is arranged between the first through hole and the compression spring, the aperture of the first through hole is larger than that of the steel ball, the diameter of the steel ball is larger than that of the second through hole, a shouldered pin is movably connected to the middle of the steel ball seat cushion and fixedly connected with the cylinder through a screw c, the cylinder is fixedly connected with a gland through a screw b, a connecting plate connected with a transmission shaft is arranged between the steel. The second through hole which is coaxial with the first through hole is formed in the steel ball seat cushion, the steel ball is arranged between the first through hole and the compression spring, the aperture of the first through hole is larger than the diameter of the steel ball, the diameter of the steel ball is larger than the aperture of the second through hole, when the pressure applied to the steel ball seat cushion by the steel ball is smaller than the torsion of the transmission shaft to the connecting plate, the steel ball seat cushion and the surface of the steel ball slide, the transmission shaft stops rotating, the reaction speed of the device after overload is increased, and the sensitivity of the device is.

Preferably, the connecting end face of the shoulder pin and the cylinder is provided with at least one gasket. The connecting distance between the steel ball seat cushion and the cylinder is changed by increasing or decreasing the gaskets, so that the pressure value of the compression spring and the steel ball on the steel ball seat cushion is adjusted, and the preset torque is realized.

Preferably, the lower surface of the mounting seat is connected with a triangular plate, and connecting holes are uniformly distributed in the triangular plate, so that the device can be conveniently fixed at a specified position.

Compared with the prior art, the beneficial effects of the utility model are that: 1) the transmission clearance is small, and the mechanical efficiency is high; 2) the sealing performance is strong, and the waterproof performance is excellent; 3) the preset device torque can be adjusted.

Drawings

FIG. 1 is a schematic structural view of the apparatus;

FIG. 2 is a schematic view of the internal structure of the apparatus;

FIG. 3 is a schematic view of the internal structure of the mounting base;

FIG. 4 is a perspective view of the intermediate assembly;

fig. 5 is a schematic view of the internal structure of the intermediate assembly.

Description of reference numerals: 1, mounting a base; 101 a first area; 102 a second region; 103 a triangular plate; 2, pressing a plate; 3, driving a shaft; 4, intermediate assembly; 401, pressing a cover; 402 a compression spring; 403, a cylinder; 404 a steel ball; 405 steel ball seat cushions; 406, screw c; 407 with shoulder pins; 408 a screw a; 409 connecting plates; 410 screw b; 411 a gasket; 412 a first via; 413 a second through hole; 5, covering a plate; 6, a bearing; 7 cross screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1-5, the torque limiter includes a square mounting base 1, a through hole with a step-shaped cross section is formed inside the mounting base 1, the inside of the mounting base 1 is divided into a first area 101 and a second area 102, two bearings 6 are arranged in the first area 101, an intermediate assembly 4 is arranged in the second area 102, contact surfaces of the two areas are provided with lubricating grease, a transmission shaft 3 coaxial with the transmission shaft is connected in the bearing 6, one end of the transmission shaft 3 is connected with the intermediate assembly 4, the other end of the transmission shaft extends out of the mounting base 1, a pressing plate 2 located outside the bearing 6 is sleeved on the transmission shaft 3, the pressing plate 2 is fixed on an end surface of the mounting base 1 through a cross screw 7, and a cover plate 5 is. Through setting up the duplex bearing, and be equipped with lubricating grease between midbody subassembly and the mount pad contact surface, make the inside transmission clearance of device little, improve mechanical efficiency, install clamp plate and apron respectively at the mount pad front and back end, block inside outside dust gets into the device, still be equipped with sealed the pad between clamp plate and the bearing, increase the whole seal of device, improve waterproof performance.

The intermediate body component 4 comprises a cylinder 403, a first through hole 412 is formed in the end face of the cylinder 403, a compression spring 402 is arranged in the first through hole 412, a steel ball seat cushion 405 is arranged on one side of the cylinder 403, a second through hole 413 which is coaxial with the first through hole 412 is formed in the steel ball seat cushion 405, a steel ball 404 is arranged between the first through hole 412 and the compression spring 402, the aperture of the first through hole 412 is larger than that of the steel ball 404, the diameter of the steel ball 404 is larger than that of the second through hole 413, a shoulder pin 407 is movably connected to the middle of the steel ball seat cushion 405, the shoulder pin 407 is fixedly connected with the cylinder 403 through a screw c406, the cylinder 403 is fixedly connected with a gland 401 through a screw b410, a connecting plate 409 connected with a transmission shaft 3 is arranged between the. The second through hole which is coaxial with the first through hole is formed in the steel ball seat cushion, the steel ball is arranged between the first through hole and the compression spring, the aperture of the first through hole is larger than the diameter of the steel ball, the diameter of the steel ball is larger than the aperture of the second through hole, when the pressure applied to the steel ball seat cushion by the steel ball is smaller than the torsion of the transmission shaft to the connecting plate, the steel ball seat cushion and the surface of the steel ball slide, the transmission shaft stops rotating, the reaction speed of the device after overload is increased, and the sensitivity of the device is.

The connecting end surface of the shouldered pin 407 and the cylinder 403 is provided with at least one gasket 411. The connecting distance between the steel ball seat cushion and the cylinder is changed by increasing or decreasing the gaskets, so that the pressure value of the compression spring and the steel ball on the steel ball seat cushion is adjusted, and the preset torque is realized.

Example 2

The utility model discloses torque limiter's theory of operation does: by increasing or decreasing the gaskets 411, the pretightening force of the compression spring 402 is adjusted, in the normal load operation process, the torque limiter normally transmits the power output by the transmission shaft 3 under the action of the compression spring 402, when the output torque of the transmission shaft 3 is transmitted through the torque limiter under the condition of overload, the pressure applied to the steel ball seat cushion 405 by the steel ball 404 is smaller than the torque of the transmission shaft 3 to the connecting plate 409, the steel ball seat cushion 405 slides on the surface of the steel ball 404, the transmission shaft 3 stops rotating, the reaction speed of the device after overload is increased, the sensitivity of the device is improved, after the overload condition is eliminated, the compression spring 1 is restored to the initial state again, and the normal operation of the device is realized.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. Torque limiter, including mount pad (1) of square form, mount pad (1) inside is equipped with the through-hole that the cross-section is the echelonment, with inside first region (101), the second region (102) of being divided into of mount pad (1), its characterized in that: be equipped with two bearings (6) in first region (101), be equipped with intermediate subassembly (4) in second region (102), and both contact surfaces are equipped with lubricating grease, bearing (6) in-connection has transmission shaft (3) coaxial with it, intermediate subassembly (4) are connected to transmission shaft (3) one end, and outside mount pad (1) was extended to the other end, the cover was equipped with clamp plate (2) that are located the bearing (6) outside on transmission shaft (3), clamp plate (2) are fixed in mount pad (1) terminal surface through cross screw (7), apron (5) are installed to another terminal surface of mount pad (1).

2. The torque limiter according to claim 1, wherein the intermediate body assembly (4) comprises a cylindrical body (403), a first through hole (412) is formed in an end face of the cylindrical body (403), a compression spring (402) is arranged in the first through hole (412), a steel ball seat (405) is arranged on one side of the cylindrical body (403), a second through hole (413) is formed in the steel ball seat (405) and is coaxial with the first through hole (412), a steel ball (404) is arranged between the first through hole (412) and the compression spring (402), the diameter of the first through hole (412) is larger than that of the steel ball (404), the diameter of the steel ball (404) is larger than that of the second through hole (413), a shouldered pin (407) is movably connected to the middle of the steel ball seat (405), the shouldered pin (407) is fixedly connected with the cylindrical body (403) through a screw c (406), the cylindrical body (403) is fixedly connected with the gland (401) through a screw b (410, and a connecting plate (409) connected with the transmission shaft (3) is arranged between the steel ball seat cushion (405) and the bearing (6), and the connecting plate (409) is fixedly connected with the steel ball seat cushion (405) through a screw a (408).

3. The torque limiter according to claim 2, wherein the shouldered pin (407) has at least one washer (411) at its end face connected to the cylindrical body (403).