CN209943371U

CN209943371U - Shaft-shaft connection steel ball type torque limiter

Info

Publication number: CN209943371U
Application number: CN201920066266.4U
Authority: CN
Inventors: 闫红光
Original assignee: China Resources New Energy Rizhao Wind Energy Co Ltd
Current assignee: China Resources New Energy Rizhao Wind Energy Co Ltd
Priority date: 2019-01-16
Filing date: 2019-01-16
Publication date: 2020-01-14
Anticipated expiration: 2029-01-16

Abstract

The utility model relates to the technical field of overload protection, in particular to a shaft-connected steel ball type torque limiter, which comprises a torque limiter body; the torque limiter comprises a torque limiter body and is characterized in that the torque limiter body comprises a shaft sleeve used for being connected with an input shaft end, a flange ring used for being connected with an output shaft end and a moving ring used for being connected with the shaft sleeve, the moving ring is abutted to a retainer fixed on the flange ring, a placing groove clamped with a steel ball fixed on the moving ring is formed in the retainer, and an elastic assembly is arranged on one surface, away from the retainer, of the moving ring. The utility model relates to a novelty, through fixing steel ball and the holder joint on the shift ring, drive the flange ring rotation at the during operation, the moment of torsion value surpasss elastic component's elasticity when too big, the relative axle sleeve of shift ring takes place to remove, and the steel ball breaks away from the standing groove on the holder this moment, and the input shaft takes place to idle run, plays effectual guard action, and when the moment of torsion value diminishes, elastic component will shift ring propelling movement return normal position, realizes resetting, and the moment of torsion limiter body can not damage.

Description

Shaft-shaft connection steel ball type torque limiter

Technical Field

The utility model relates to an overload protection technical field specifically is a shaft coupling steel ball formula 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 conventional overload protection technology is chinese patent publication No. CN1431413A, and when the torque is too large, the transmission is stopped by breaking and breaking a flange for transmitting the torque between the first rotating body and the second rotating body. The disadvantage of this technique is that once damage occurs, the transmission mechanism is completely disabled.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shaft coupling steel ball formula torque limiter to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a shaft-shaft connection steel ball type torque limiter comprises a torque limiter body; the torque limiter comprises a torque limiter body and is characterized in that the torque limiter body comprises a shaft sleeve used for being connected with an input shaft end, a flange ring used for being connected with an output shaft end and a moving ring used for being connected with the shaft sleeve, the moving ring is abutted to a retainer fixed on the flange ring, a placing groove clamped with a steel ball fixed on the moving ring is formed in the retainer, and an elastic assembly is arranged on one surface, away from the retainer, of the moving ring.

As a further aspect of the present invention: the moving ring is provided with a through hole for inserting the shaft sleeve, and the inner wall of the through hole is provided with a latch meshed with the bar-shaped teeth arranged at the outer side end of the shaft sleeve.

As a further aspect of the present invention: the elastic component comprises a disc spring and a locking disc, wherein two ends of the disc spring are respectively abutted against the moving ring and the locking disc, and one side of the locking disc, which is far away from the disc spring, is fixed on the inner side of the shell through an adjusting nut and a fastening screw.

As a further aspect of the present invention: and two ends of the shell are respectively provided with a fixing flange for fixing the yaw motor and the yaw speed reducer.

As a further aspect of the present invention: the flange ring type gas-liquid separator further comprises a limit switch arranged on the inner side of the shell, the limit switch is arranged on one side, away from the flange ring, of the moving ring, and the distance between the limit switch and the moving ring is 2-3 mm.

As a further aspect of the present invention: the inner side of the flange ring is provided with an axial needle bearing, and two side ends of the axial needle bearing are respectively provided with a sliding sleeve and a bearing end cover.

As a further aspect of the present invention: the sliding sleeve is rotationally connected with a through groove arranged on the retainer.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a novelty, through fixing steel ball and the holder joint on the shift ring, it rotates to drive the flange ring at the during operation, the moment of torsion value surpasss elastic component's elasticity when too big, the relative axle sleeve of shift ring takes place to remove, the steel ball breaks away from the standing groove on the holder this moment, the input shaft takes place to idle, play effectual guard action, when the moment of torsion value diminishes, elastic component returns the normal position with the shift ring propelling movement, the steel ball is gone into again in the draw-in groove on the holder this moment, realize resetting, the moment of torsion limiter body can not damage, it has effectively solved current moment of torsion limiter when protecting the speed reducer that drifts, damage easily after the overload, the problem of unreusable.

Drawings

Fig. 1 is an exploded view of a structure of a shaft-coupled steel ball type torque limiter.

Fig. 2 is a schematic structural diagram of a shaft-coupled steel ball type torque limiter.

FIG. 3 is a front view of a shaft coupling steel ball torque limiter.

FIG. 4 is a cross-sectional view taken in the direction A-A of the axle coupling ball torque limiter.

In the figure: 1-shaft sleeve, 2-flange ring, 3-moving ring, 4-adjusting nut, 5-disc spring, 6-retainer, 7-sliding sleeve, 8-bearing end cover, 9-axial needle bearing, 10-set screw, 11-locking disk and 12-shell.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1 ~ 4;

example one

In the embodiment of the utility model, the shaft-connected steel ball type torque limiter comprises a torque limiter body; the torque limiter comprises a shaft sleeve 1 used for connecting an input shaft end, a flange ring 2 used for connecting an output shaft end and a moving ring 3 used for connecting the shaft sleeve 1, wherein the moving ring 3 is abutted against a retainer 6 fixed on the flange ring 2, a placing groove clamped with steel balls fixed on the moving ring 3 is arranged on the retainer 6, a through hole used for inserting and placing the shaft sleeve 1 is arranged on the moving ring 3, a clamping tooth meshed with a strip-shaped tooth arranged at the outer side end of the shaft sleeve 1 is arranged on the inner wall of the through hole, an elastic component is arranged on one side of the moving ring 3 far away from the retainer 6, the moving ring 3 is driven to rotate when the shaft sleeve 1 is driven to rotate by an input shaft, the retainer 6 and the flange ring 2 fixedly connected with the retainer 6 are driven to rotate by the steel balls fixed on the moving ring 3, when the torque value is too large, the elastic component exceeds the elastic force of, at the moment, the steel balls are separated from the placing grooves in the retainer 6, the input shaft idles to play an effective protection role, when the torque value is reduced, the elastic component pushes the moving ring 3 back to the original position, and the steel balls are clamped into the clamping grooves in the retainer 6 again to realize resetting.

Specifically, the elastic component comprises a disc spring 5 and a locking disc 11, two ends of the disc spring 5 are respectively abutted against the moving ring 3 and the locking disc 11, one side, far away from the disc spring 5, of the locking disc 11 is fixed on the inner side of the shell 12 through an adjusting nut 4 and a fastening screw 10, and the elastic force of the disc spring 5 can be adjusted through the adjusting nut 4 and the fastening screw 10.

Preferably, fixing flanges for fixing the yaw motor and the yaw reducer are respectively arranged at two ends of the housing 12.

Preferably, in order to realize the overload alarm, the utility model discloses in the concrete implementation, still including setting up the limit switch (not shown in the figure) in shell 12 inboard, limit switch installs in the one side that flange ring 2 was kept away from to shift ring 3, and the distance apart from shift ring 3 is 2-3 mm.

Example two

In order to realize the relative axle sleeve 1 pivoted stability of flange ring 2, the utility model discloses still provide another kind of embodiment and perfect this application at the concrete implementation in-process, it is concrete, flange ring 2's inboard is provided with axial bearing 9, and axial bearing 9's both sides end is provided with sliding sleeve 7 and bearing end cover 8 respectively, and the logical groove that sets up on sliding sleeve 7 and the holder 6 rotates to be connected.

It should be particularly noted that, the axial needle bearing is the application of the prior art in the present application, through fixing steel ball and holder joint on the shift ring, drive the flange ring to rotate when working, the elasticity that surpasss elastic component when the torque value is too big, shift ring relative axle sleeve takes place to remove, the steel ball breaks away from the standing groove on the holder this moment, the input shaft takes place the idle running, play effectual guard action, when the torque value diminishes, elastic component pushes the shift ring back the normal position, the steel ball blocks into the draw-in groove on the holder again this moment, realize resetting, torque limiter body can not damage the innovation point that this application, it has effectively solved current torque limiter when protecting yaw speed reducer, damage easily after the overload, problem that can not reuse.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A shaft-shaft connection steel ball type torque limiter comprises a torque limiter body; the torque limiter comprises a shaft sleeve (1) used for connecting an input shaft end, a flange ring (2) used for connecting an output shaft end and a moving ring (3) used for being connected with the shaft sleeve (1), wherein the moving ring (3) is abutted to a retainer (6) fixed on the flange ring (2), the torque limiter is characterized in that a placing groove clamped with a steel ball fixed on the moving ring (3) is arranged on the retainer (6), and an elastic component is arranged on one surface, away from the retainer (6), of the moving ring (3).

2. The axle-to-axle steel ball type torque limiter as claimed in claim 1, wherein said moving ring (3) is provided with a through hole for inserting the axle sleeve (1), and the inner wall of the through hole is provided with a latch engaging with a bar-shaped tooth provided at the outer end of the axle sleeve (1).

3. The axle-to-axle steel ball type torque limiter of claim 1, wherein the elastic component comprises a disc spring (5) and a locking disc (11), two ends of the disc spring (5) are respectively abutted against the moving ring (3) and the locking disc (11), and one side of the locking disc (11) far away from the disc spring (5) is fixed on the inner side of the shell (12) through an adjusting nut (4) and a set screw (10).

4. The shaft-coupling steel ball type torque limiter as claimed in claim 3, wherein both ends of the housing (12) are respectively provided with a fixing flange for fixing a yaw motor and a yaw reducer.

5. The shaft-coupling steel ball type torque limiter according to claim 4, further comprising a limit switch arranged inside the housing (12), wherein the limit switch is arranged on one side of the moving ring (3) far away from the flange ring (2), and the distance from the moving ring (3) is 2-3 mm.

6. The axle-to-axle steel ball type torque limiter according to claim 1, wherein the inner side of the flange ring (2) is provided with an axial needle bearing (9), and both side ends of the axial needle bearing (9) are respectively provided with a sliding sleeve (7) and a bearing end cover (8).

7. The axle-coupling steel ball type torque limiter according to claim 6, wherein the sliding sleeve (7) is rotatably connected with a through groove arranged on the retainer (6).