CN219954013U - Friction type torque limiter - Google Patents

Abstract

The utility model discloses a friction type torque limiter, which comprises an inner ring and an outer ring, wherein the inner wall of the inner ring is rotationally connected with the outer ring, a friction ring is arranged on the outer wall of one side of the outer ring, four fixing grooves are formed in a surrounding mode and equidistantly penetrating through the outer wall of the inner ring relative to the position of the friction ring, arc-shaped limiting blocks are rotationally connected to the inner walls of the four fixing grooves, jacking blocks are fixedly connected to the inner walls of the four arc-shaped limiting blocks, a driving bearing is rotationally connected to the inner wall of the inner ring, jacking holes are formed in the outer wall of the driving bearing relative to the jacking blocks in a penetrating mode, one ends of the four jacking blocks penetrate through holes and extend into the corresponding jacking holes, the friction ring can be replaced, damage of the friction ring is avoided, meanwhile, the rotation speed of the driving bearing can be adjusted, the torque limiting effect of the driving bearing is buffered, and the torque limiting effect of the driving bearing is accelerated.

Description

Friction type torque limiter

Technical Field

The utility model relates to the technical field of torque limiters, in particular to a friction torque limiter.

Background

The friction type torsion limiter is one part for connecting the main motor and the working machine and has the main function of overload protection, and the torsion limiter limits the torsion transmitted by the transmission system in slip mode when the required torsion exceeds the set value due to overload or mechanical fault.

When the friction type torque limiter is used, the slipping mode limits the torque transmitted by the transmission system and cuts off the power of the machine, but the driving bearing still rotates at the moment, after the driving bearing is required to stop rotating or reduce the speed to a safe speed, the machine is continuously electrified, the waiting time is long, and the friction type torque limiter is required to be provided.

Disclosure of Invention

The present utility model is directed to a friction torque limiter, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the friction type torque limiter comprises an inner ring and an outer ring, wherein the inner wall of the inner ring is rotationally connected with the outer ring, a friction ring is arranged on the outer wall of one side of the outer ring, four fixing grooves are formed in the outer wall of the inner ring in a surrounding mode and equidistantly penetrating mode relative to the position of the friction ring, and arc-shaped limiting blocks are rotationally connected to the inner walls of the four fixing grooves;

the inner wall of four arc stopper all fixedly connected with kicking block, the inner wall rotation of inner circle is connected with drive bearing, drive bearing's outer wall is all run through for the position of kicking block and has been seted up the nib, and four the one end of kicking block is all run through the hole and is extended to in the nib that corresponds.

Preferably, the outer wall of the friction ring is symmetrically penetrated and provided with screw holes, and one ends of the two screw holes are penetrated and extended into the outer ring and are connected with bolts in a threaded manner.

Preferably, the inner walls of the four arc-shaped limiting blocks are fixedly connected with elastic pieces, and the other ends of the four elastic pieces are fixedly connected with the inner ring.

Preferably, the inner wall of the friction ring is provided with an annular tooth slot in a penetrating way.

Preferably, the four fixed slots and the arc-shaped limiting blocks are all arranged in a cross shape, and two of the fixed slots and the arc-shaped limiting blocks are arranged clockwise, and the other two of the fixed slots and the arc-shaped limiting blocks are arranged anticlockwise.

Compared with the prior art, the utility model has the beneficial effects that: when the rotational speed of the drive bearing is too fast to cause torque to exceed a set value, the arc-shaped limiting block rotates outwards under the drive of centripetal force, the arc-shaped limiting block rotates from the fixed groove to the annular tooth groove and pulls the elastic sheet, the arc-shaped limiting block props against the inner wall of the friction ring and impacts and buffers through the annular tooth groove until the rotational speed of the inner ring and the drive bearing is slowed down, the bolts can be taken down to replace the friction ring, the friction ring can be replaced, the damage influence on the torque limiting effect of the friction ring is avoided, meanwhile, the rotational speed of the drive bearing can be utilized, the torque limiting effect of the drive bearing is adjusted, and the torque limiting effect of the drive bearing is accelerated.

Drawings

FIG. 1 is a schematic elevational view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the outer race of the present utility model;

FIG. 4 is a schematic cross-sectional view of the inner race of the present utility model;

fig. 5 is a schematic cross-sectional view of the drive bearing of the present utility model.

In the figure: 1. an inner ring; 2. an outer ring; 3. a friction ring; 4. a fixing groove; 5. an arc-shaped limiting block; 6. a top block; 7. a drive bearing; 8. a top hole; 9. a screw hole; 10. a bolt; 11. a spring plate; 12. annular tooth slots.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the friction type torque limiter comprises an inner ring 1 and an outer ring 2, wherein the inner wall of the inner ring 1 is rotationally connected with the outer ring 2, a friction ring 3 is arranged on the outer wall of one side of the outer ring 2, four fixing grooves 4 are formed in a surrounding mode and equidistantly penetrating through the outer wall of the inner ring 1 relative to the position of the friction ring 3, and arc-shaped limiting blocks 5 are rotationally connected to the inner walls of the four fixing grooves 4;

the inner wall of four arc stopper 5 is all fixedly connected with kicking block 6, and the inner wall of inner circle 1 rotates and is connected with drive bearing 7, and drive bearing 7's outer wall is all run through for the position of kicking block 6 and has been seted up kicking hole 8, and the one end of four kicking blocks 6 all runs through the hole and extends to in the kicking hole 8 that corresponds.

Screw holes 9 are symmetrically formed in the outer wall of the friction ring 3 in a penetrating mode, one ends of the two screw holes 9 penetrate through and extend into the outer ring 2, bolts 10 are connected in a threaded mode, and the friction ring 3 and the outer ring 2 are fixedly connected through the bolts 10 conveniently.

Wherein, the inner wall of four arc stopper 5 is all fixedly connected with shell fragment 11, and the other end of four shell fragments 11 all links to each other with inner circle 1 is fixed, is convenient for use shell fragment 11 to stimulate arc stopper 5 and remove.

The inner wall of the friction ring 3 is provided with an annular tooth slot 12 in a penetrating manner, so that the annular tooth slot 12 and the arc-shaped limiting block 5 can be used for buffering the inner ring 1 conveniently.

Wherein, four fixed slots 4 all are the cross setting with arc stopper 5, and wherein the direction of two arc stoppers 5 is clockwise setting, and the direction of two other arc stoppers 5 is anticlockwise setting, and convenient to use drive bearing 7 drives arc stopper 5 and rotates.

Specifically, when the utility model is used, the driving bearing 7 rotates clockwise, when the required torque exceeds a set value due to overload or mechanical failure, the rotating speed of the driving bearing 7 is too high, the driving bearing 7 drives the inner ring 1 to rotate clockwise through the jacking block 6, under the driving of centripetal force, the two clockwise arc limiting blocks 5 rotate outwards in the fixed groove 4, the arc limiting blocks 5 simultaneously pull the elastic sheet 11, the arc limiting blocks 5 are rotated out of the fixed groove 4 until abutting against the inner wall of the friction ring 3, the arc limiting blocks 5 collide with the annular tooth grooves 12 to buffer the inner ring 1 and the driving bearing 7 until the torque of the driving bearing 7 reaches the set value, at the moment, the rotating speed of the driving bearing 7 is normal, the elastic sheet 11 pulls the arc limiting blocks 5 back into the fixed groove 4, the jacking block 6 is inserted into the jacking hole 8, the driving bearing 7 rotates anticlockwise, the two anticlockwise arc limiting blocks 5 rotate outwards in the fixed groove 4, the inner ring 1 and the driving bearing 7 are buffered until the rotating speed of the driving bearing 7 is normal, the bolt 10 is removed from the screw hole 9, and the friction ring 3 is replaced.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby a feature defining "first," "second," "third," "fourth" may explicitly or implicitly include at least that feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The friction type torque limiter comprises an inner ring (1) and an outer ring (2), wherein the inner wall of the inner ring (1) is rotationally connected with the outer ring (2), and the friction type torque limiter is characterized in that a friction ring (3) is arranged on the outer wall of one side of the outer ring (2), four fixing grooves (4) are formed in the outer wall of the inner ring (1) in a surrounding mode and penetrate through the position of the friction ring (3) at equal intervals, and arc limiting blocks (5) are rotationally connected to the inner walls of the four fixing grooves (4);

the inner walls of the four arc-shaped limiting blocks (5) are fixedly connected with top blocks (6), the inner wall of the inner ring (1) is rotationally connected with a driving bearing (7), top holes (8) are formed in the outer wall of the driving bearing (7) in a penetrating mode relative to the positions of the top blocks (6), and one ends of the four top blocks (6) penetrate through holes and extend into the corresponding top holes (8).

2. A friction torque limiter according to claim 1 wherein: screw holes (9) are symmetrically formed in the outer wall of the friction ring (3) in a penetrating mode, one ends of the two screw holes (9) penetrate through and extend into the outer ring (2), and bolts (10) are connected in a threaded mode.

3. A friction torque limiter according to claim 1 wherein: the inner walls of the four arc-shaped limiting blocks (5) are fixedly connected with elastic pieces (11), and the other ends of the four elastic pieces (11) are fixedly connected with the inner ring (1).

4. A friction torque limiter according to claim 1 wherein: the inner wall of the friction ring (3) is provided with an annular tooth slot (12) in a penetrating way.

5. A friction torque limiter according to claim 1 wherein: four fixed slot (4) all are the cross setting with arc stopper (5), and wherein two the direction of arc stopper (5) is clockwise setting, and two other the direction of arc stopper (5) is anticlockwise setting.