Friction-proof device of torque limiter
阅读说明:本技术 一种扭矩限制器的防摩擦装置 (Friction-proof device of torque limiter ) 是由 王永涛 于 2020-07-07 设计创作,主要内容包括:本发明涉及机械设备技术领域,且公开了一种扭矩限制器的防摩擦装置,包括机壳,机壳内腔的一端活动套接有主动盘,机壳内腔的另一端活动套接有从动盘,从动盘外表面的中部固定连接有第一弹簧。本发明通过传动机构发生过载时,在滚珠的作用下,弹簧压缩,使主动盘与从动盘分离,而此时由于主动盘仍然在持续转动,使得挡块在离心力的作用下向外伸出,使挡块移动至主动盘一侧的凹槽处,使滚珠一侧与挡块的一端接触,并在持续转动时阻挡滚珠复位,使滚珠与主动盘的碰撞转化为滚珠对主动盘和挡块的滚动摩擦,解决了传统滚珠式扭矩限制器发生过载时,滚珠与主动盘碰撞,出现损耗的问题,使滚珠与主动盘的损耗减小,保障了设备的使用寿命。(The invention relates to the technical field of mechanical equipment and discloses an anti-friction device of a torque limiter. When the transmission mechanism is overloaded, the spring is compressed under the action of the balls, so that the driving disc is separated from the driven disc, and at the moment, the driving disc still rotates continuously, the stop block extends outwards under the action of centrifugal force, the stop block moves to the groove on one side of the driving disc, one side of the balls is in contact with one end of the stop block, and the balls are stopped from resetting when the driving disc rotates continuously, so that the collision between the balls and the driving disc is converted into rolling friction of the balls on the driving disc and the stop block, the problem that the balls collide with the driving disc and are lost when the traditional ball type torque limiter is overloaded is solved, the loss of the balls and the driving disc is reduced, and the service life of equipment is ensured.)
1. An anti-friction device of a torque limiter, comprising a casing (1), characterized in that: a driving disc (2) is movably sleeved at one end of the inner cavity of the shell (1), a driven disc (3) is movably sleeved at the other end of the inner cavity of the shell (1), one end of the outer surface of the driven disc (3) is movably sleeved with a first spring (4), the other end of the first spring (4) is fixedly connected with a movable block (5) positioned at one end of the outer surface of the driven disc (3), a ball (6) is arranged in a cavity between the movable block (5) and the driving disc (2), one end of the driving disc (2) close to the driven disc (3) is provided with a movable cavity (7), a stop block (8) is movably sleeved above the inner cavity of the movable cavity (7), and the surface of one end of the stop block (8) and one end of the driving disc (2) are positioned on the same plane, the bottom surface of the stop block (8) is fixedly connected with a second spring (9), and the other end of the second spring (9) is fixedly connected with a fixing block (10).
2. The anti-friction device of a torque limiter according to claim 1, wherein: the inner cavity swing joint of fixed block (10) has fixing bolt (11), fixing bolt (11) run through the inner cavity of fixed block (10) and extend to the inner cavity of initiative dish (2).
3. The anti-friction device of a torque limiter according to claim 1, wherein: the number of the movable cavities (7) is the same as that of the balls (6), and a stop block (8), a second spring (9) and a fixed block (10) are uniformly distributed in the inner cavity of each movable cavity (7).
Technical Field
The invention relates to the technical field of mechanical equipment, in particular to an anti-friction device of a torque limiter.
Background
The torque limiter is also called a safety coupling, is a part for connecting a driving machine and a working machine, protects a driving part or a driven part in a transmission system, has the main function of overload protection, can be divided into a plurality of styles such as a ball type, a friction type, a hydraulic type, a magnetic powder type and the like according to the working principle, is mainly used for agriculture and forestry machinery, machine tool equipment, electronic equipment industries and the like, and can limit the torque transmitted by the transmission system in a slipping mode when the required torque exceeds a set value due to overload or mechanical failure so as to prevent the damage of the machinery or a transmission shaft.
Traditional ball formula torque limiter is at normal during operation, the ball is on average inlayed in the recess that driven plate and driving disc opposition formed, and when transshipping takes place, under the effect of spring, ball roll-off recess, make driving disc and driven disc separation, reach the effect of protection driving shaft or driven shaft, and because the ball automatic re-setting under the effect of spring, when leading to transshipping still to exist, the ball just can follow the roll-off in the recess many times under the effect of overload resistance, and at the in-process of ball roll-off recess, because the driving disc can collide with the ball, lead to ball and driving disc all can wear and tear, the life of torque limiter has been reduced, and can influence torque limiter's transmission effect, make and often adjust torque limiter.
Disclosure of Invention
Aiming at the defects of the prior torque limiter in the use process in the background technology, the invention provides the anti-friction device of the torque limiter, which has the advantages of reducing friction and being convenient to maintain and solves the problems in the background technology.
The invention provides the following technical scheme: the utility model provides an antifriction device of torque limiter, includes the casing, the initiative dish has been cup jointed in the one end activity of casing inner chamber, the driven plate has been cup jointed in the other end activity of casing inner chamber, first spring has been cup jointed in the one end activity of driven plate surface, the other end fixedly connected with of first spring is located the movable block of driven plate surface one end, the ball has been placed in holding the chamber between movable block and the initiative dish, the initiative dish has been close to the one end of driven plate and has been seted up movable chamber, the top activity of activity chamber inner chamber has been cup jointed the dog, and the surface and the initiative dish one end of dog one end are in the coplanar, the bottom surface fixedly connected with second spring of dog, the other end fixedly connected with fixed block of second spring.
Preferably, the inner cavity of the fixed block is movably connected with a fixing bolt, and the fixing bolt penetrates through the inner cavity of the fixed block and extends to the inner cavity of the driving disc.
Preferably, the number of the movable cavities is the same as that of the balls, and a stop block, a second spring and a fixed block are uniformly arranged in an inner cavity of each movable cavity.
The invention has the following beneficial effects:
1. when the transmission mechanism is overloaded, the spring is compressed under the action of the balls, so that the driving disc is separated from the driven disc, and at the moment, the driving disc still rotates continuously, the stop block extends outwards under the action of centrifugal force, the stop block moves to the groove on one side of the driving disc, one side of the balls is in contact with one end of the stop block, and the balls are stopped from resetting when the driving disc rotates continuously, so that the collision between the balls and the driving disc is converted into rolling friction of the balls on the driving disc and the stop block, the problem that the balls collide with the driving disc and are lost when the traditional ball type torque limiter is overloaded is solved, the loss of the balls and the driving disc is reduced, and the service life of equipment is ensured.
2. According to the invention, each stop block is arranged to be an independent body, so that when the ball is rubbed with the stop block to cause one end of the stop block to be abraded, the damaged stop block can be independently replaced through the fixing bolt each time the torque limiter is maintained, the problem that the driving disc needs to be integrally replaced after the traditional torque limiter is damaged is solved, the maintenance cost of the torque limiter is reduced, and the maintenance efficiency of the torque limiter is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a perspective view of the driving plate of the present invention;
FIG. 3 is a schematic diagram illustrating the normal operation of the present invention;
FIG. 4 is a schematic view of the structural anti-friction state of the present invention;
FIG. 5 is an enlarged view of the point A in FIG. 3 according to the present invention.
In the figure: 1. a housing; 2. a driving disk; 3. a driven plate; 4. a first spring; 5. a movable block; 6. a ball bearing; 7. a movable cavity; 8. a stopper; 9. a second spring; 10. a fixed block; 11. and (5) fixing the bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an anti-friction device of a torque limiter comprises a housing 1, a
Wherein, the inner chamber swing joint of
Wherein, the quantity in
The using method of the invention is as follows:
when the normal work is carried out: the
when overload occurs: when overload occurs, the rotating speeds of the driving shaft and the driven shaft are changed, so that the rotating speeds of the
during overload adjustment: after overload occurs, adjustment is needed, after the adjustment of the driving piece and the driven piece is completed, the driving shaft stops rotating, the
when the
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
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