阅读说明：本技术 一种单向双旋转棘轮阻尼离合器 (One-way double-rotation ratchet wheel damping clutch ) 是由 刘达 李昌建 钟弟祥 于 2020-08-11 设计创作，主要内容包括：本发明公开了一种单向双旋转棘轮阻尼离合器,结构包括外支撑组件、可以实现双动力传递扭矩的动力源、主轴和棘轮部分、棘爪组、阻尼器组、副传动轴和后支架组成；外支撑组件包括壳体和壳体端盖两者连接组成,作为棘轮阻尼离合器的外支撑,双动力传递扭矩的动力源包括主动力源和副动力源,主轴穿过棘轮两者过盈配合或止转连接,棘爪组位于副传动轴和后支架之间,通过销钉一与棘爪保持架连接,起到支撑传动作用；所述主轴与摩擦片连接,棘轮和摩擦片将一部分扭矩传递至阻尼器组；本发明结构设计由于合理且简单,有效的解决了现有技术存在的问题。(The invention discloses a unidirectional double-rotation ratchet wheel damping clutch which structurally comprises an outer support assembly, a power source capable of realizing double-power torque transmission, a main shaft, a ratchet wheel part, a pawl group, a damper group, an auxiliary transmission shaft and a rear support, wherein the main shaft is connected with the ratchet wheel part; the outer support assembly comprises a shell and a shell end cover which are connected to form the outer support of the ratchet damping clutch, the power source of double-power torque transmission comprises a main power source and an auxiliary power source, a main shaft penetrates through the ratchet and is in interference fit or rotation stopping connection with the ratchet, and a pawl group is positioned between an auxiliary transmission shaft and a rear support and is connected with a pawl holder through a pin I to play a role in supporting and driving; the main shaft is connected with the friction plate, and the ratchet wheel and the friction plate transmit a part of torque to the damper group; the invention effectively solves the problems in the prior art due to reasonable and simple structural design.)

1. The utility model provides a one-way dual rotation ratchet damping clutch which characterized in that: the structure comprises an external support component, a power source capable of realizing double-power torque transmission, a main shaft, a ratchet wheel part, a pawl group, a damper group, an auxiliary transmission shaft and a rear support; the outer support assembly comprises a shell and a shell end cover which are connected, the inner part of the outer support assembly is hollow, two ends of the outer support assembly are provided with through holes and are used as outer supports of the ratchet damping clutch, the shell and the shell end cover are used as outer supports of the whole part and are in support connection with the pawl group through a rolling bearing III, a rolling bearing IV and a rolling bearing V, and the outer support assembly is also in support connection with the main shaft through a rolling bearing I and a rolling bearing II; the power source with double power transmission torques comprises a main power source and an auxiliary power source, wherein the main power source is connected with one end of the main shaft, and the auxiliary power source is connected with one end of the auxiliary transmission shaft; the main shaft penetrates through the ratchet wheel and is in interference fit or rotation stopping connection, the pawl group is positioned between the auxiliary transmission shaft and the rear support and is connected with the pawl holder through a first pin to play a role in supporting transmission; the main shaft is connected with the friction plate, and the ratchet wheel and the friction plate transmit a part of torque to the damper group.

2. A one-way dual rotation ratchet damper clutch according to claim 1, wherein: the auxiliary transmission shaft is a hollow shaft, and the main shaft penetrates through the hollow part of the auxiliary transmission shaft; the auxiliary transmission shaft is in supporting connection with the shell end cover through a rolling bearing III, the output end of the auxiliary transmission shaft penetrates through the shell end cover and is connected with an auxiliary power source, and the other end of the auxiliary transmission shaft is connected with the pawl retainer through a pin I;

the rear bracket is a hollow shaft, and the main shaft penetrates through the hollow part of the rear bracket; the support is in supporting connection with the shell through a rolling bearing IV, and one end of the support is connected with the pawl retainer through a pin I.

3. A one-way dual rotation ratchet damper clutch according to claim 1, wherein: the pawl group includes: the ratchet wheel is of a hollow structure, the ratchet wheel can freely rotate along the axis O in the hollow part, the inner wall of the ratchet wheel holder is provided with an open groove shape, the pawl is installed in the groove shape, and the elastic element I is arranged between the pawl and the groove shape of the pawl holder;

the pawl retainer is also provided with a plurality of arc-shaped grooves;

cylindrical protruding parts are further arranged on two sides of the top of the pawl and are used for being connected with the damper group;

the pawl is arranged in the groove shape of the pawl holder and can swing, and the pawl can swing by taking the circular part I as an axis along the circular part II of the pawl holder.

4. A one-way dual rotation ratchet damper clutch according to claim 1, wherein: the damper group includes: the inner framework, the outer framework, the pin II, the friction plate, the steel ball and the elastic element II are arranged in the groove; the inner framework is in supporting connection with the rear support through a rolling bearing III, and the rear support is in supporting connection with the shell through a rolling bearing IV, so that the inner framework is indirectly in supporting connection with the shell;

the second pin is arranged in the hole position of the inner framework and is in interference fit with the hole position of the inner framework;

the pin II also penetrates through the arc-shaped groove of the pawl retainer and is connected with the hole position of the outer framework, and the retainer ring I is arranged at the clamping groove position of the outer framework and is connected with the clamping groove position of the pin II in a locking way;

the steel ball is arranged in the slotted hole of the inner framework, the two elastic elements are respectively arranged between the slotted hole of the inner framework and the steel ball, the steel ball is respectively connected with the ratchet wheel and the slotted friction plate in a friction mode, and the friction plate is connected with the main shaft.

5. A one-way dual rotation ratchet damper clutch according to claim 1, wherein: main shaft and ratchet: the ratchet wheel is positioned at the axis of the vacancy of the pawl group, the end surfaces of the ratchet wheel and the ratchet wheel are arranged in parallel and level with each other, the main shaft penetrates through the ratchet wheel and the ratchet wheel to be in interference fit or rotation stopping connection, the main shaft penetrates through the inner framework to be in sliding connection, the main shaft penetrates through the friction plates to be in rotation stopping connection and is in sliding connection in the axial direction, and the shaft retaining ring II is installed in a main shaft clamping groove and used for axial; the main shaft penetrates through the ratchet wheel, the inner framework and the friction plate respectively, the inner framework is positioned between the ratchet wheel and the friction plate, and the inner framework is in friction connection with the arc-shaped grooves of the ratchet wheel and the friction plate under the action of the elastic element II through steel balls arranged in the groove shape; then the main shaft passes through the hollow rear bracket and then passes through the rolling bearing to be connected with the shell in a supporting way, and the output end of the main shaft is connected with the main power source; the other side of the main shaft penetrates through the hollow auxiliary transmission shaft and is in supporting connection with the hollow auxiliary transmission shaft through a rolling bearing, the auxiliary transmission shaft is also in supporting connection with the shell end cover through a rolling bearing III, the main shaft is indirectly in supporting connection with the shell end cover, and then the output end of the main shaft is connected with a load element.

6. A unidirectional dual rotation ratchet damping clutch according to any one of claims 1, 3, 4, wherein: a plurality of pawls are arranged; a plurality of elastic elements I and elastic elements II are arranged; a plurality of pins I and a plurality of pins II are arranged; a plurality of steel balls are arranged.

7. A one-way dual rotation ratchet damper clutch according to claim 4, wherein: the second pin penetrates through the arc-shaped groove of the pawl retainer in a sliding connection mode, so that the squirrel-cage assembly of the inner framework, the outer framework and the second pins can freely rotate for a certain angle along the axis O, and the angle value is the maximum moving range of the second pins in the arc-shaped groove; i.e. equal to the swing angle value of the arc-shaped slot of the pawl cage.

8. A one-way dual rotation ratchet damper clutch according to claim 1, wherein: the pawl group is positioned between the inner framework and the outer framework, and forms a mechanism capable of relatively rotating for a certain angle along the axis O through a pin II and a retainer ring I;

the inner framework and the outer framework are also provided with a plurality of runway-shaped grooves at corresponding positions and are respectively connected with cylindrical protruding parts arranged at two sides of the top positions of the plurality of pawls in a groove connection mode so as to enable the plurality of pawls to freely move in the arranged groove shape.

9. A one-way dual rotation ratchet damper clutch according to claim 9, wherein: a plurality of racetrack slots, the slots having the shape characteristics of:a certain rotary swing angle can be formed along the circle center O, and the swing angle value is equal to or larger than the angle value of the arc-shaped groove of the pawl retainer;the centers of the circular parts at the two ends of the groove shape have high and low fall relative to the circle center O, and the numerical values are R1 and R2 respectively.

Technical Field

The invention relates to a power transmission mechanism applied to automobiles, engineering machinery and the like, in particular to a one-way double-rotation ratchet wheel damping clutch.

Background

The ratchet clutch is one kind of one-way clutch and includes two kinds, outer meshing ratchet clutch and inner meshing ratchet clutch. The conventional ratchet clutch realizes the functions of transmitting torque in one rotation direction and idling in the other direction through a mechanism consisting of a ratchet wheel and a plurality of pawls. When the ratchet type one-way clutch rotates in the direction of idling, the pawls slide over the ratchet, so that the outer race and the inner race relatively perform the idling. When the ratchet type one-way clutch is rotated in the locking direction, the pawls are fitted in the ratchet tooth grooves, the one-way clutch is in the locked state, and torque can be transmitted between the inner ring and the outer ring.

An outer race having a recessed portion on an inner periphery thereof, as in a ratchet type one-way clutch applied to 2017110188378.4NSK Voner corporation; an inner ring disposed coaxially with the outer ring on the inner diameter side of the outer ring and having a notch on the outer periphery; a claw member which is accommodated in the recess, is fitted into the notch of the inner ring, and transmits torque between the inner ring and the outer ring; and a spring for urging the pawl member toward the inner race, which solves the technical problem of improving the durability of the ratchet type one-way clutch.

A double-ratchet one-way clutch as in patent 2016110749256, comprising: the ratchet wheel comprises a driving ratchet wheel, a driven ratchet wheel set, a pawl set and a rolling bearing. The pawl set includes: pawl seat cover, a plurality of pawls, a plurality of elastic component. The driven ratchet set includes: the driven ratchet group comprises a ratchet wheel, balls, a ball retainer and a driven ratchet group support ring. When the double-ratchet one-way clutch rotates in an idling direction, the driving ratchet wheel firstly rotates relative to the driven ratchet wheel set, after the tooth crest face of the driven ratchet wheel set and the tooth crest face of the driving ratchet wheel are axially complemented, the driving ratchet wheel drives the driven ratchet wheel set to rotate together, and the pawl slides from the tail end of the tooth crest face of the driving ratchet wheel and then reaches the tooth crest face of the driven ratchet wheel set.

In summary, in the ratchet type one-way clutch of the prior art, when the one-way clutch rotates in the idling direction, the pawl slides over the ratchet wheel, because the tooth grooves and the tooth crest of the ratchet wheel alternately change and pass through the pawl, the pawl alternately impacts the surface of the ratchet wheel under the action of the elastic element and makes a sound, the elastic element continuously stretches and retracts and generates energy loss, and the process can increase the abrasion between the pawl and the ratchet wheel and reduce the service life of the elastic element. Meanwhile, vibration and noise are generated during high-speed rotation, so that the use condition of the rotating speed of the clutch is limited.

Therefore, the technical personnel in the field also can solve the problems in time and provide a product choice for the market demand.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a one-way double-rotation ratchet wheel damping clutch which is simple and reasonable in structural design and reliable in work, and the pawls are arranged in a special-shaped groove of a damper group in a sliding connection mode, so that the pawls are influenced by the damper group to be separated from contact with a ratchet wheel when the clutch rotates in an idling direction, the pawls are prevented from impacting the surface of the ratchet wheel, and the rotating speed limiting condition of the clutch is relieved when the pawls do not impact the surface of the ratchet wheel when the clutch rotates in the idling direction.

The invention is realized by the following technical scheme: a unidirectional double-rotation ratchet wheel damping clutch structurally comprises an outer support assembly, a power source capable of realizing double-power torque transmission, a main shaft, a ratchet wheel part, a pawl group, a damper group, an auxiliary transmission shaft and a rear support; the outer support assembly comprises a shell and a shell end cover which are connected, the inner part of the outer support assembly is hollow, two ends of the outer support assembly are provided with through holes and are used as outer supports of the ratchet damping clutch, the shell and the shell end cover are used as outer supports of the whole part and are in support connection with the pawl group through a rolling bearing III, a rolling bearing IV and a rolling bearing V, and the outer support assembly is also in support connection with the main shaft through a rolling bearing I and a rolling bearing II; the power source with double power transmission torques comprises a main power source and an auxiliary power source, wherein the main power source is connected with one end of the main shaft, and the auxiliary power source is connected with one end of the auxiliary transmission shaft; the main shaft penetrates through the ratchet wheel and is in interference fit or rotation stopping connection, the pawl group is positioned between the auxiliary transmission shaft and the rear support and is connected with the pawl holder through a first pin to play a role in supporting transmission; the main shaft is connected with the friction plate, and the ratchet wheel and the friction plate transmit a part of torque to the damper group.

Preferably, the auxiliary transmission shaft is a hollow shaft, and the main shaft penetrates through the hollow part of the auxiliary transmission shaft; the auxiliary transmission shaft is in supporting connection with the shell end cover through a rolling bearing III, the output end of the auxiliary transmission shaft penetrates through the shell end cover and is connected with an auxiliary power source, and the other end of the auxiliary transmission shaft is connected with the pawl retainer through a pin I;

the rear bracket is a hollow shaft, and the main shaft penetrates through the hollow part of the rear bracket; the support is in supporting connection with the shell through a rolling bearing IV, and one end of the support is connected with the pawl retainer through a pin I.

Preferably, the pawl set includes: the ratchet wheel is of a hollow structure, the ratchet wheel can freely rotate along the axis O in the hollow part, the inner wall of the ratchet wheel holder is provided with an open groove shape, the pawl is installed in the groove shape, and the elastic element I is arranged between the pawl and the groove shape of the pawl holder;

the pawl retainer is also provided with a plurality of arc-shaped grooves;

cylindrical protruding parts are further arranged on two sides of the top of the pawl and are used for being connected with the damper group;

the pawl is arranged in the groove shape of the pawl holder and can swing, and the pawl can swing by taking the circular part I as an axis along the circular part II of the pawl holder.

Preferably, the damper group includes: the inner framework, the outer framework, the pin II, the friction plate, the steel ball and the elastic element II are arranged in the groove; the inner framework is in supporting connection with the rear support through a rolling bearing III, and the rear support is in supporting connection with the shell through a rolling bearing IV, so that the inner framework is indirectly in supporting connection with the shell;

the second pin is arranged in the hole position of the inner framework and is in interference fit with the hole position of the inner framework;

the pin II also penetrates through the arc-shaped groove of the pawl retainer and is connected with the hole position of the outer framework, and the retainer ring I is installed at the clamping groove position of the outer framework and is connected with the clamping groove position of the pin II in a locking mode.

The steel ball is arranged in the slotted hole of the inner framework, the two elastic elements are respectively arranged between the slotted hole of the inner framework and the steel ball, the steel ball is respectively connected with the ratchet wheel and the slotted friction plate in a friction way, and the friction plate is connected with the main shaft;

the second pin penetrates through the arc-shaped groove of the pawl retainer in a sliding connection mode, so that the squirrel-cage assembly of the inner framework, the outer framework and the second pins can freely rotate for a certain angle along the axis O, and the angle value is the maximum moving range of the second pins in the arc-shaped groove; i.e. equal to the swing angle value of the arc-shaped slot of the pawl cage.

The pawl group is positioned between the inner framework and the outer framework, and a mechanism capable of rotating for a certain angle along the axis O is formed by the pin II and the retainer ring I.

The inner framework and the outer framework are also provided with a plurality of runway-shaped grooves at corresponding positions and are respectively connected with cylindrical protruding parts arranged at two sides of the top positions of the plurality of pawls in a groove connection mode so as to enable the plurality of pawls to freely move in the arranged groove shape.

Preferably, a plurality of runway-shaped grooves are arranged, and the shape characteristics of the grooves are as follows:

a certain rotation swing angle can be provided along the centre O, the swing angle value being equal to or greater than the angle value of the arc-shaped slot 402 of the pawl cage 4.

The centers of the circular parts at the two ends of the groove shape have high and low fall relative to the circle center O, and the numerical values are R1 and R2 respectively.

Preferably, the main shaft and ratchet: the ratchet wheel is positioned at the axis of the vacancy of the pawl group, the end surfaces of the ratchet wheel and the ratchet wheel are arranged in parallel and level with each other, the main shaft penetrates through the ratchet wheel and the ratchet wheel to be in interference fit or rotation stopping connection, the main shaft penetrates through the inner framework to be in sliding connection, the main shaft penetrates through the friction plates to be in rotation stopping connection and is in sliding connection in the axial direction, and the shaft retaining ring II is installed in a main shaft clamping groove and used for axial; the main shaft penetrates through the ratchet wheel, the inner framework and the friction plate respectively, the inner framework is positioned between the ratchet wheel and the friction plate, and the inner framework is in friction connection with the arc-shaped grooves of the ratchet wheel and the friction plate under the action of the elastic element II through steel balls arranged in the groove shape; then the main shaft passes through the hollow rear bracket and then passes through the rolling bearing to be connected with the shell in a supporting way, and the output end of the main shaft is connected with the main power source; the other side of the main shaft penetrates through the hollow auxiliary transmission shaft and is in supporting connection with the hollow auxiliary transmission shaft through a rolling bearing, the auxiliary transmission shaft is also in supporting connection with the shell end cover through a rolling bearing III, the main shaft is indirectly in supporting connection with the shell end cover, and then the output end of the main shaft is connected with a load element.

Preferably, a plurality of pawls are arranged; a plurality of elastic elements I and elastic elements II are arranged; a plurality of pins I and a plurality of pins II are arranged; a plurality of steel balls are arranged.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the free switching of two power sources sharing one clutch is realized;

2. the damper is added, and the high-low position swing angle groove shape of the damper group is arranged to be in sliding connection with the pawl, so that the pawl is separated from being in contact with the ratchet wheel when the clutch rotates in the idling direction, and the pawl is prevented from impacting the surface of the ratchet wheel.

3. As described in the second paragraph above, the clutch speed limit condition is released when the pawls do not hit the ratchet surface when rotating in the direction in which the clutch is freewheeling.

To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.

Drawings

FIG. 1 is a cut-away isometric view of a one-way dual rotation ratchet damper clutch according to a specific embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a front view of a one-way dual rotation ratchet damper clutch in accordance with an embodiment of the present invention;

FIG. 3 is a diagram illustrating the position changes of the components associated with the engaging and disengaging states of the ratchet clutch according to the embodiment of the present invention;

FIG. 4 is an enlarged partial view of a single pawl position in the engaged and disengaged states of the ratchet clutch in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of several component assemblies of a pawl pack and damper pack in accordance with an exemplary embodiment of the present invention;

FIG. 6 is a schematic view of a plurality of racetrack-shaped channels disposed in corresponding positions on an inner frame and an outer frame in accordance with an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of the mounting locations of the inner frame and the outer frame of the pawl and damper pack in accordance with the preferred embodiment of the present invention;

reference numerals:

1-a main shaft; 2-ratchet wheel; 3-a pawl; 4-pawl retainer, 5-auxiliary transmission shaft, 6-rear bracket, 7-elastic element I, 8-pin I; 9-inner skeleton; 10-exo-skeleton; 11-pin two; 12-a first retainer ring; 13-friction plate; 14-steel balls; 15-a second elastic element; 16-a housing; 17-housing end cap; 18-rolling bearing one; 19-rolling bearing two; 20-rolling bearing III; 21-rolling bearing four; 22-rolling bearing five; 23-a second retainer ring; 24-a primary power source; 25-a secondary power source; 26-a load element; 402-an arc-shaped slot; 101-a card slot; 111-card slot; 311-cylindrical raised portions; 301-circular portion one; 401-circular portion two.

Detailed Description

Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

It should be noted that in the description of the present invention, it is to be understood that the terms "central", "lateral", "upper", "lower", "front", "end", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the invention.

As shown in fig. 1-7, the unidirectional double-rotation ratchet wheel damping clutch structurally comprises an external support assembly, a power source capable of realizing double-power torque transmission, a main shaft 1, a ratchet wheel 2, a pawl group, a damper group, an auxiliary transmission shaft 5 and a rear support 6; the outer support assembly comprises a shell 16 and a shell end cover 17 which are connected, the inner part of the outer support assembly is hollow, two ends of the outer support assembly are provided with through holes and are used as outer supports of the ratchet damping clutch, wherein the shell 16 and the shell end cover 17 are used as outer supports of the whole part and are in support connection with a pawl group through a rolling bearing III 20, a rolling bearing IV 21 and a rolling bearing V22, and the outer support assembly is also in support connection with the main shaft 1 through a rolling bearing I18 and a rolling bearing II 19; the power source with double power transmission torques comprises a main power source 24 and an auxiliary power source 25, wherein the main power source 24 is connected with one end of the main shaft 1, and the auxiliary power source 25 is connected with one end of the auxiliary transmission shaft 5; the main shaft 1 penetrates through the ratchet 2 and is in interference fit or rotation stopping connection, the pawl group is positioned between the auxiliary transmission shaft 5 and the rear support 6 and is connected with the pawl holder 4 through a plurality of pins I8 to play a role in supporting transmission; the main shaft 1 is connected with a friction plate 13, and the ratchet 2 and the friction plate 13 transmit a part of torque to a damper group.