CN201723611U

CN201723611U - Torque limiter

Info

Publication number: CN201723611U
Application number: CN201020234386XU
Authority: CN
Inventors: 朱留存; 王世杰; 严忠波; 何再龙; 陆惠炳
Original assignee: Changzhou Jingrui Automation Equipment Technology Co Ltd
Current assignee: Changzhou Jingrui Automation Equipment Technology Co Ltd
Priority date: 2010-06-23
Filing date: 2010-06-23
Publication date: 2011-01-26
Anticipated expiration: 2020-06-23

Abstract

The utility model discloses a torque limiter, which comprises a left limiter, a right limiter and a torque limiting connector for connecting the left limiter with the right limiter. The right limiter is connected with a power input shaft, the left limiter is connected with a power output shaft, a bearing is disposed at a central shaft hole of the left limiter, and the bearing can be fixed onto the left limiter through a bearing cover and screws. The torque limiter has the advantages of simple structure, higher safety performance and lower cost.

Description

Torque limiter

Technical field

The utility model relates to the power transmission technical field, particularly a kind of torque limiter that transmission system is protected of being used for.

Background technique

In power transmission system; for example in the automotive power transmission system; need use torque limiter system is carried out overload protection; when the outside hinders or during the influencing moment of torsion and increase of other factors for some reason; excessive moment of torsion produces big impact to motor easily; if there is not torque limiter, will cause the damage of motor and speed changer.Existing torque limiter, structure is more complicated all, and manufacture cost is corresponding also higher.

Summary of the invention

The purpose of this utility model is at the torque limiter complex structure in the available dynamic transmission system described in the background technique, and the problem that cost is high provides a kind of torque limiter that power transmission system is protected of being used for.

The realization the technical solution of the utility model is as follows:

A kind of torque limiter, the torque limited link that it comprises left limiter, right limiter and is used to be connected left limiter and right limiter, right limiter is connected with power input shaft, left side limiter is connected with pto, limiter central shaft hole place, a left side is provided with bearing, bearing by bearing cap and screw on left limiter.

Described torque limited link is the torque limited pin, and its middle part is provided with the less broken part of diameter.

Described torque limited link is fixedlyed connected with right limiter with left limiter respectively by the locking screw.

Described bearing is the spherical angle contact bearing, and its left side is provided with self-locking nut.

The beneficial effects of the utility model are for being connected by the torque limited link with right limiter because of left limiter of the present utility model; right limiter is connected with power input shaft; left side limiter is connected with pto; power is delivered on the left limiter by the torque limited link from right limiter; be delivered to pto at last; when external loading strengthens; the pto moment of torsion increases; and the moment of torsion of power input shaft is constant; therefore between left limiter and right limiter, produce difference in torque; when difference in torque acquires a certain degree; the torque limited link can be fractureed; left side limiter disconnects with right limiter and being connected, and right limiter is rotated further under the drive of power input shaft, and left limiter is then pressed inertia and rotated; until stopping operating; by torque limiter is set, the power input system is played a protective role, prevent to cause the breaking-up of power input system because of load is excessive.

Description of drawings

Fig. 1 is a schematic representation of the present utility model;

Fig. 2 is the schematic representation of torque limited pin;

Among the figure, 1 is left limiter, and 2 is bearing, and 3 is right limiter, and 4 is the torque limited pin, and 5 is self-locking nut, and 6 is the locking screw, and 7 is screw, and 8 is bearing cap.

Embodiment

With reference to a kind of torque limiter shown in accompanying drawing 1, the accompanying drawing 2, it comprises left limiter 1, right limiter 3 and the torque limited link that is used to connect left limiter 1 and right limiter 3, right limiter 3 is connected with power input shaft, left side limiter 1 is connected with pto, limiter 1 central shaft hole place, a left side is provided with bearing 2, and bearing 2 is fixed on the left limiter 1 by bearing cap 8 and screw 7.Described torque limited link is a torque limited pin 4, its middle part is provided with the less broken part of diameter, the diameter of broken part will be set according to concrete max. output torque, in order to prevent to throw away damage or other accidents that causes machine after torque limited pin 4 from fractureing, described torque limited link is fixedlyed connected with right limiter 3 with left limiter 1 respectively by locking screw 6.Described bearing 2 is the spherical angle contact bearing, and its left side is provided with self-locking nut 5, because self-locking nut 5 when high speed rotating, can not become flexible, has good fastening function, therefore the spherical angle contact bearing can be firmly secured on the left limiter 1.After torque limited pin 4 was twisted off, left limiter 1 still was bearing on the spherical angle contact bearing, the cantilever of left limiter 1 can not occur, and the coaxality of left limiter 1 and right limiter 3 is convenient to change torque limited pin 4 in the assurance torque limiter.

Because left limiter 1 of the present utility model is connected by torque limited pin 4 with right limiter 3; right limiter 3 is connected with power input shaft; left side limiter 1 is connected with pto; power is delivered on the left limiter 1 by the torque limited link from right limiter 3; be delivered to pto at last; when external loading strengthens; the pto moment of torsion increases; and the moment of torsion of power input shaft is constant; therefore between left limiter 1 and right limiter 3, produce difference in torque; when difference in torque acquires a certain degree; the torque limited link can be fractureed; left side limiter 1 disconnects with right limiter 3 and being connected, and right limiter 3 is rotated further under the drive of power input shaft, and 1 of left limiter is pressed inertia and rotated; until stopping operating; by torque limiter is set, the power input system is played a protective role, prevent to cause the breaking-up of power input system because of load is excessive.Torque limiter of the present utility model is simple in structure, and manufacture cost is lower, only need select suitable torque limited pin 4 to get final product the safety of safeguards system according to the torque limited needs of reality.

Claims

1. torque limiter, it is characterized in that: the torque limited link that it comprises left limiter, right limiter and is used to be connected left limiter and right limiter, right limiter is connected with power input shaft, left side limiter is connected with pto, limiter central shaft hole place, a left side is provided with bearing, bearing by bearing cap and screw on left limiter.

2. torque limiter according to claim 1 is characterized in that: described torque limited link is the torque limited pin, and its middle part is provided with the less broken part of diameter.

3. according to claim 1 or the described torque limiter of claim 2, it is characterized in that: described torque limited link is fixedlyed connected with right limiter with left limiter respectively by the locking screw.

4. torque limiter according to claim 1 is characterized in that: described bearing is the spherical angle contact bearing, and its left side is provided with self-locking nut.