阅读说明：本技术 一种制动机构、制动方法、工程电机及电梯 (Braking mechanism, braking method, engineering motor and elevator ) 是由 常永旭 于 2019-10-18 设计创作，主要内容包括：本申请提供了一种制动机构、制动方法、工程电机和电梯,该制动机构包括驱动盘、制动盘、滚珠、摩擦座、弹性限位结构,所述驱动盘与电机联动连接,所述制动盘与驱动盘同轴线设置且可轴向滑动,所述驱动盘上设有多个圆形凹槽；所述制动盘上设有与圆形凹槽相对且一一对应的锥形槽,所述滚珠可转动的设置在圆形凹槽和锥形槽形成的容置空间内；所述制动盘上设有第一摩擦面,所述摩擦座上设有与第一摩擦面接触以实现制动的第二摩擦面,所述弹性限位结构与所述制动盘轴向滑动连接,根据所述驱动盘和制动盘之间的转矩差控制所述弹性件的状态,进而控制两个摩擦面的接触状态,实现制动,不需要实用电磁铁及其复杂的控制电路,结构简单,制动效果好。(The application provides a brake mechanism, a brake method, an engineering motor and an elevator, wherein the brake mechanism comprises a driving disc, a brake disc, balls, a friction seat and an elastic limiting structure, the driving disc is in linkage connection with the motor, the brake disc and the driving disc are coaxially arranged and can axially slide, and a plurality of circular grooves are formed in the driving disc; the brake disc is provided with conical grooves which are opposite to the circular grooves and correspond to the circular grooves one by one, and the balls are rotatably arranged in an accommodating space formed by the circular grooves and the conical grooves; the brake disc is provided with a first friction surface, the friction seat is provided with a second friction surface which is in contact with the first friction surface to realize braking, the elastic limiting structure is in axial sliding connection with the brake disc, the state of the elastic piece is controlled according to the torque difference between the driving disc and the brake disc, the contact states of the two friction surfaces are further controlled, braking is realized, a practical electromagnet and a complex control circuit of the practical electromagnet are not needed, the structure is simple, and the braking effect is good.)

1. A brake mechanism, comprising:

the driving disc is in linkage connection with the motor, and a plurality of circular grooves are formed in the opposite surfaces of the driving disc and the brake disc;

the brake disc and the driving disc are coaxially arranged and can slide along the axial piece; the brake disc is provided with conical grooves which correspond to the circular grooves one by one, and the conical grooves and the circular grooves are arranged oppositely to form an accommodating space with a variable distance; the outer circumferential wall of the brake disc is provided with a first friction surface;

the ball bearing is rotatably arranged in the accommodating space;

the friction seat is fixedly connected with the mounting site, and the inner circumferential wall of the friction seat is provided with a second friction surface which is contacted with the first friction surface to realize braking;

elasticity limit structure, elasticity limit structure includes axial component, elastic component and locating part, the axial component axial sets up, one end with brake disc sliding connection, the other end is connected with power take off mechanism, locating part fixed connection is in on the axial component, the elastic component cover is established on the axial component, one end quilt the brake disc is spacing, and the other end quilt the locating part is spacing, works as when the elastic component takes place deformation or resets, brake disc endwise slip makes the contact or the separation of first friction surface and second friction surface.

2. The brake mechanism as claimed in claim 1, wherein the friction seat comprises a friction plate, a friction arm and a friction arm seat, the friction plate is disposed in an arc shape matching with the first friction surface, the second friction surface is an inner side wall of the friction plate, the inner side wall of the friction arm is provided with an arc surface matching with the outer side wall of the friction plate, the friction plate and the arc surface are detachably connected, the side wall of the friction arm seat is provided with a mounting hole, the friction plate passes through the mounting hole to match with the first friction surface, and the friction arm is fixedly connected with the friction seat.

3. The brake mechanism of claim 1, wherein the resilient member is a compression spring or a leaf spring.

4. The brake mechanism of claim 1, wherein the circular grooves are evenly distributed on a circumference of equal radius.

5. The brake mechanism of claim 1, wherein the brake disc is provided with a limiting groove at the position where the brake disc is matched with the elastic member, and the end of the elastic member extends into the limiting groove.

6. The brake mechanism of claim 1, wherein the limiting member has a first bottom plate and a first limiting edge, the first limiting edge is disposed on a side of the first bottom plate abutting against the elastic member, and the limiting member is fixedly connected to the axial member through the first bottom plate.

7. The brake mechanism as claimed in claim 6, wherein the limiting member further comprises a safety seat having a second bottom plate and a second limiting edge, the second limiting edge is disposed on one side of the first bottom plate and is fixedly connected to the second bottom plate, and the safety seat is fixedly connected to the axial member through the second bottom plate.

8. The brake mechanism as claimed in claim 1, wherein the driving plate includes a first plate surface, a driving shaft hole is provided at a center of the first plate surface, the driving plate is linked with the output shaft of the motor through the driving shaft hole, and the circular groove is provided at a lower surface of the first plate surface.

9. The brake mechanism according to claim 8, wherein the transmission shaft hole comprises a first shaft hole and a second shaft hole which are coaxially arranged up and down, the inner diameter of the first shaft hole is smaller than that of the second shaft hole, a first step is formed at the transition position of the first shaft hole and the second shaft hole, the motor output shaft is provided with a second step, the motor output shaft is matched with the first shaft hole, and the upper surface of the driving disc is blocked by the second step; the second shaft hole is matched with the sealing cover, the upper surface of the sealing cover is blocked by the first step, the sealing cover is connected with the motor output shaft through a hexagon socket head cap screw, and a first flat key is arranged between the first shaft hole and the motor output shaft to realize synchronous rotation of the driving disc and the motor output shaft.

10. The brake mechanism according to claim 1, wherein the driving plate includes a second plate surface, a first rotating shaft hole is provided at a center position of the second plate surface, the driving plate is rotatably connected to the rotating shaft through the first rotating shaft hole, sprocket teeth are provided on an outer circumferential wall of the second plate surface, the driving plate is driven by the motor through the sprocket teeth and the chain, and the circular groove is provided on a lower surface of the second plate surface.

11. The brake mechanism according to any one of claims 8 to 10, wherein the power output mechanism is a speed reducer, the axial member is an input shaft of the speed reducer, the speed reducer is disposed coaxially with the motor, the brake disc is slidably connected to the input shaft of the speed reducer through a spline, the stopper is fixedly connected to the input shaft of the speed reducer, and the elastic member is fitted between the brake disc and the stopper.

12. The brake mechanism according to claim 1, wherein the driving disc is a first sprocket, the power output mechanism is a second sprocket, the first sprocket is a ring-shaped sprocket, the circumferential wall of the outer side of the ring-shaped sprocket is provided with sprocket teeth, and the lower surface of the ring-shaped sprocket is provided with a circular groove; the second chain wheel is provided with a third disc surface, and chain teeth, an annular shaft ring and an axial piece which are arranged on the third disc surface, a third step is arranged on the circumferential wall of the outer side of the annular shaft ring, the upper end of the first chain wheel is blocked and limited by the third step, a rotating shaft is arranged at the center of the third disc surface, the chain teeth are arranged on the circumferential wall of the outer side of the third disc surface, the axial piece and the annular shaft ring are fixedly connected to one side of the third disc surface and extend towards the brake disc, and the axial piece is arranged on the inner side of the annular shaft ring; brake disc outside-in is equipped with first friction surface, first connection face and second connection face in proper order, first friction surface sets up on the outside circumference wall of brake disc, the second is connected the face setting and is in the inboard of annular collar and with the third dish face is parallel, the second is connected the face and is equipped with the confession the first through-hole that the axial component passed to and the second through-hole that supplies the pivot to pass through, first connection face along the lower extreme of first sprocket, the lower extreme of annular collar and the inside wall of annular collar are connected first friction surface and second connection face, the bell groove is established first connection face with circular recess corresponds the department, the bell groove with circular recess forms the accommodation space, the ball sets up in the accommodation space, first connection face with through the flat key transmission of second between the annular collar.

13. The brake mechanism as claimed in claim 12, wherein the inner circumferential wall of the first sprocket has a fourth step, the fourth step cooperates with the annular collar to form an annular groove, the first connecting surface has an annular protrusion cooperating with the annular groove, the tapered groove is disposed on a top surface of the annular protrusion, and the annular groove is disposed at a position corresponding to the tapered groove.

14. The brake mechanism according to claim 13, wherein a first flat key groove is formed on the inner circumferential wall of the annular collar, a second flat key groove is formed on the opposite surface of the first connecting surface and the inner side wall of the annular collar, and a flat key is arranged in a space formed by the first flat key groove and the second flat key groove in a matching manner.

15. The brake mechanism of claim 12, wherein the axial member is a threaded rod or a straight rod.

16. A braking method for a braking mechanism according to any one of claims 1 to 15, comprising the steps of:

the motor drives the driving disc to rotate, a torque difference is generated between the driving disc and the brake disc, the ball deviates from the original rotation axis, the ball generates axial thrust on the outer conical surface of the conical groove surface, the elastic piece is compressed under the pressure of the ball, the brake disc axially slides and is far away from the driving disc, the first friction surface moves downwards and is separated from the second friction surface, and braking is released;

the motor stops rotating, the torque difference between the driving disc and the brake disc disappears, the compressed spring recovers the elastic force generated by deformation, the ball is pushed to return to the original rotating axis, the axial thrust of the ball to the conical groove surface disappears, the brake disc axially slides under the pushing of the elastic force and is close to the driving disc, the first friction surface is tightly attached to the second friction surface, and the braking is realized.

17. An electric working machine, characterized in that the electric working machine comprises a brake mechanism according to any one of claims 1-15.

18. An elevator, characterized in that the escalator comprises a braking mechanism according to any one of claims 1-15.

19. Elevator according to claim 18, characterized in that the elevator is a traction vertical ladder, a forced drive vertical ladder or an escalator.

Technical Field

The application relates to the technical field of escalators, in particular to a braking mechanism, a braking method of the braking mechanism, an engineering motor with the braking mechanism and an elevator.

Background

At present, the escalator is mostly braked by an electromagnetic brake, for example, chinese patent with an authorization publication number of CN103518073B discloses an electromagnetic brake, which includes: a frame portion; an armature portion movably mounted on the frame portion and having a magnetic core; one or more spring elements for actuating a brake by moving the armature portion forward; an electromagnet fitted to the frame portion and arranged to release the brake by pulling the armature portion backwards against the one or more spring elements; and an elastically bendable planar damping plate adapted to be bent when the armature portion moves and, while being bent, to generate a damping force (Fd) against the bending to damp brake noise. However, the brakes of this type all need to control the magnetic force of the electromagnet by means of electric power to realize braking or brake release, the structure is complex, the on-off point of the electromagnet often depends on a control circuit, and if the control circuit fails, the normal operation of the elevator is affected.

Disclosure of Invention

In view of the above-mentioned shortcoming that present stopper exists, this application provides a brake mechanism, need not adopt electro-magnet and its control circuit, simple structure, braking effect is good.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

a brake mechanism comprising:

the driving disc is in linkage connection with the motor, and a plurality of circular grooves are formed in the opposite surfaces of the driving disc and the brake disc;

the brake disc and the driving disc are coaxially arranged and can axially slide; the brake disc is provided with conical grooves which correspond to the circular grooves one by one, and the conical grooves and the circular grooves are arranged oppositely to form an accommodating space with a variable distance; the outer circumferential wall of the brake disc is provided with a first friction surface;

the ball bearing is rotatably arranged in the accommodating space;

the friction seat is fixedly connected with the mounting site, and the inner circumferential wall of the friction seat is provided with a second friction surface which is contacted with the first friction surface to realize braking;

elasticity limit structure, elasticity limit structure includes axial component, elastic component and locating part, the axial component axial sets up, one end with brake disc sliding connection, the other end is connected with power take off mechanism, locating part fixed connection is in on the axial component, the elastic component cover is established on the axial component, one end quilt the brake disc is spacing, and the other end quilt the locating part is spacing, works as when the elastic component takes place deformation or resets, brake disc endwise slip makes the contact or the separation of first friction surface and second friction surface.

The ball is limited in the containing space jointly limited by the circular groove and the conical groove, when the driving disc starts to rotate under the action of the motor, the ball and the driving disc rotate together, the ball deviates from the original rotation axis due to the torque difference between the driving disc and the braking disc, the ball generates axial thrust on the outer conical surface of the conical groove surface, the elastic piece is compressed under the pressure of the ball, the braking disc slides axially and is far away from the driving disc, the first friction surface moves downwards and is separated from the second friction surface, and braking is released. In a similar way, when needing to brake, the motor stall, the torque difference between driving-disc and the brake disc disappears, and the elasticity that compressed spring recovered the deformation and produced promotes the ball and gets back to original axis of rotation, and the axial thrust of ball to the tapered groove face disappears, the brake disc is axial slip under the promotion of elasticity, is close to the driving-disc, first friction surface pastes tight second friction surface, realizes the braking.

According to the scheme, an electromagnet and a complex control circuit of the electromagnet are not needed, and when the driving disc is used for inputting the rotating torque and losing the rotating torque, the torque difference between the driving disc and the braking disc is used for controlling the motion state of the balls, so that the deformation degree of the elastic piece is controlled, the braking effect is realized, the structure is simple, and the braking effect is good.

The power output mechanism is a mechanism that rotates in synchronization with the brake disc and transmits power of the brake disc, and may be, for example, a speed reducer or other synchronous rotating member that transmits power to the brake disc.

Preferably, the friction seat includes friction disc, friction arm and friction arm seat, the friction disc set to with first friction surface matched with arcuation, the second friction surface does the inside wall of friction disc, the inside wall of friction arm be equipped with the arc line face that the outside wall of friction disc suited, the friction disc with but arc line face split connection, the lateral wall of friction arm seat is equipped with the mounting hole, the friction disc passes the mounting hole, with first friction surface cooperation, the friction arm with friction seat fixed connection through setting up the friction disc of split, can guarantee the friction effect between first friction surface and the second friction surface, prevents to lose braking effect because of using for a long time and making first friction surface and second friction surface wearing and tearing.

Preferably, the elastic element is a compression spring or a spring plate.

Preferably, the circular grooves are uniformly distributed on a circumference with equal radius. Through with circular recess uniform diameter distribution can make the motion state of each ball keep unanimous, makes the atress of brake disc even, and the motion state is stable.

Preferably, a limit groove is formed at the matching position of the brake disc and the elastic piece, and the end part of the elastic piece extends into the limit groove. The limiting groove can limit the end part of the elastic part in the rotating process of the brake disc, so that the end part of the elastic part is prevented from generating noise due to vibration or collision with other parts.

Preferably, the limiting member has a first bottom plate and a first limiting edge, the first limiting edge is disposed on one side of the first bottom plate, which is abutted against the elastic member, and the limiting member is fixedly connected to the axial member through the first bottom plate.

Preferably, the limiting part further comprises a safety seat, the safety seat is provided with a second bottom plate and a second limiting edge, the second limiting edge is arranged on one side of the first bottom plate and fixedly connected with the second bottom plate, and the safety seat is fixedly connected with the axial part through the second bottom plate. The safety seat is used for reinforcing the limiting part and ensuring the braking effect.

Preferably, the driving disc comprises a first disc surface, a transmission shaft hole is formed in the center of the first disc surface, the driving disc is in linkage connection with the output shaft of the motor through the transmission shaft hole, and the circular groove is formed in the lower surface of the first disc surface. The driving disk is a driving disk directly connected with the output shaft of the motor.

Preferably, the transmission shaft hole comprises a first shaft hole and a second shaft hole which are coaxially arranged up and down, the inner diameter of the first shaft hole is smaller than that of the second shaft hole, a first step is formed at the transition position of the first shaft hole and the second shaft hole, a second step is arranged on the output shaft of the motor, the output shaft of the motor is matched with the first shaft hole, and the upper surface of the driving disc is blocked by the second step; the second shaft hole is matched with the sealing cover, the upper surface of the sealing cover is blocked by the first step, the sealing cover is connected with the motor output shaft through a hexagon socket head cap screw, and a first flat key is arranged between the first shaft hole and the motor output shaft to realize synchronous rotation of the driving disc and the motor output shaft. The axial limiting of the driving disc is realized through the first step and the second step, the synchronous rotation of the driving disc and the motor output shaft is realized through the first flat key, and the linkage connection of the driving disc and the motor output shaft is realized.

Preferably, the driving disc comprises a second disc surface, a first rotating shaft hole is formed in the center of the second disc surface, the driving disc is rotatably connected with the rotating shaft through the first rotating shaft hole, the circumferential wall of the outer side of the second disc surface is provided with sprockets, the driving disc is in transmission with the motor through the sprockets and the chain, and the circular groove is formed in the lower surface of the second disc surface. The driving disc is a driven wheel which is in chain transmission with the output shaft of the motor, and the output shaft of the motor is also provided with a transmission chain wheel.

Preferably, the power output mechanism is a speed reducer, the axial member is an input shaft of the speed reducer, the speed reducer is coaxial with the motor, the brake disc is slidably connected with the input shaft of the speed reducer through a spline, the limiting member is fixedly connected with the input shaft of the speed reducer, and the elastic member is sleeved between the brake disc and the limiting member. Power output on the brake disc is achieved through the speed reducer, and an input shaft of the speed reducer serves as an axial piece to provide a site for installation of the elastic piece and the limiting piece. In addition, in order to make the rotating effect of the brake disc more stable, the speed reducer input shaft is arranged adjacent to the motor output shaft but not in contact with the motor output shaft.

Preferably, the driving disc is a first chain wheel, the power output mechanism is a second chain wheel, the first chain wheel is a ring-shaped chain wheel, chain teeth are arranged on the circumferential wall of the outer side of the ring-shaped chain wheel, and a circular groove is formed in the lower surface of the ring-shaped chain wheel; the second chain wheel is provided with a third disc surface, and chain teeth, an annular shaft ring and an axial piece which are arranged on the third disc surface, a third step is arranged on the circumferential wall of the outer side of the annular shaft ring, the upper end of the first chain wheel is blocked and limited by the third step, a rotating shaft is arranged at the center of the third disc surface, the chain teeth are arranged on the circumferential wall of the outer side of the third disc surface, the axial piece and the annular shaft ring are fixedly connected to one side of the third disc surface and extend to the brake disc, and the axial piece is arranged on the inner side of the annular shaft ring; brake disc outside-in is equipped with first friction surface, first connection face and second connection face in proper order, first friction surface sets up on the outside circumference wall of brake disc, the second is connected the face setting and is in the inboard of annular collar and with the third dish face is parallel, the second is connected the face and is equipped with the confession the first through-hole that the axial component passed to and the second through-hole that supplies the pivot to pass through, first connection face along the lower extreme of first sprocket, the lower extreme of annular collar and the inside wall of annular collar are connected first friction surface and second connection face, the bell groove is established first connection face with circular recess corresponds the department, the bell groove with circular recess forms the accommodation space, the ball sets up in the accommodation space, first connection face with through the flat key transmission of second between the annular collar.

The first chain wheel is in contact with the brake disc through the balls, when the first chain wheel is started, a torque difference exists between the brake wheel and the first chain wheel, the torque difference enables the balls to deviate from the original axis, the balls generate axial thrust on the outer conical surface of the conical groove surface, when the axial thrust is larger than the elastic force of the elastic piece, the elastic piece is compressed, the brake disc axially slides and is far away from the second chain wheel and the first chain wheel, the first friction surface is separated from the second friction surface, braking is relieved, and then the second chain wheel, the balls and the brake disc are integrated, rotary motion is transmitted to the second chain wheel through a flat key arranged between the annular shaft ring and the brake disc, and the second chain wheel drives the escalator to run through chain teeth.

Preferably, the inboard circumference wall of first sprocket is equipped with the fourth step, the fourth step with annular shaft collar cooperation forms annular groove, be equipped with on the first connection surface with annular groove matched with annular is protruding, the bell jar sets up the bellied top surface of annular, circular recess set up with the bell jar corresponds the department. The first chain wheel has specification limitation in a specific use process, and the sizes of the first chain wheel and the second chain wheel can be adjusted by arranging the fourth step; in addition, space can also be saved by providing a step.

Preferably, a first flat key groove is formed in the circumferential wall of the inner side of the annular shaft ring, a second flat key groove is formed in the opposite surface of the first connecting surface and the inner side wall of the annular shaft ring, and a flat key is arranged in a space formed by matching the first flat key groove and the second flat key groove. The flat key groove is formed in the inner side wall of the annular shaft ring, so that the specification and strength of the flat key can be increased, and the effect of kinetic energy transmission is better.

Preferably, the axial member is a screw or a straight rod.

The application also provides a braking method, which comprises the following steps:

the motor drives the driving disc to rotate, a torque difference is generated between the driving disc and the brake disc, the ball deviates from the original rotation axis, the ball generates axial thrust on the outer conical surface of the conical groove surface, the elastic piece is compressed under the pressure of the ball, the brake disc axially slides and is far away from the driving disc, the first friction surface moves downwards and is separated from the second friction surface, and braking is released;

the motor stops rotating, the torque difference between the driving disc and the brake disc disappears, the compressed spring recovers the elastic force generated by deformation, the ball is pushed to return to the original rotating axis, the axial thrust of the ball to the conical groove surface disappears, the brake disc axially slides under the pushing of the elastic force and is close to the driving disc, the first friction surface is tightly attached to the second friction surface, and the braking is realized.

The application also provides an engineering motor, the engineering motor comprises the brake mechanism.

The application also provides an elevator, which comprises the brake mechanism, wherein the elevator is a traction type vertical ladder, a forced driving type vertical ladder or an escalator.

The application has the advantages that: the application provides a brake mechanism which comprises a driving disc, a brake disc, balls, a friction seat and an elastic limiting structure, wherein the driving disc is in linkage connection with a motor, and a plurality of circular grooves are formed in the opposite surfaces of the driving disc and the brake disc; the brake disc and the driving disc are coaxially arranged and can axially slide; the brake disc is provided with conical grooves which correspond to the circular grooves one by one, and the conical grooves and the circular grooves are arranged oppositely to form an accommodating space with a variable distance; the outer circumferential wall of the brake disc is provided with a first friction surface; the ball bearings are rotatably arranged in the accommodating space; the friction seat is fixedly connected with the mounting site, and the inner circumferential wall of the friction seat is provided with a second friction surface which is contacted with the first friction surface to realize braking; elasticity limit structure with brake disc axial sliding connects, elasticity limit structure is according to the torque difference control between driving-disc and the brake disc the direction of motion and the movement distance of brake disc, and then the contact state of two friction surfaces of control realizes the braking, does not need practical electro-magnet and complicated control circuit, simple structure, and braking effect is good.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic exterior view of a brake mechanism according to an embodiment of the present disclosure;

FIG. 2 is a schematic illustration of a brake mechanism according to an embodiment of the present disclosure in a disassembled configuration;

FIG. 3 is a schematic cross-sectional view of a braking mechanism according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a driving disc of a braking mechanism according to an embodiment of the present application;

FIG. 5 is a cross-sectional view of a drive plate of a braking mechanism according to an embodiment of the present application;

FIG. 6 is an enlarged schematic view of area A of FIG. 3;

FIG. 7 is a schematic structural view of a motor shaft of a braking mechanism according to an embodiment of the present application;

FIG. 8 is a schematic top view of a brake rotor of a braking mechanism according to an embodiment of the present disclosure;

FIG. 9 is a schematic bottom view of a brake disc of a braking mechanism according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a limiting member of a braking mechanism according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of a safety catch of a braking mechanism according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of an installation of a brake mechanism according to an embodiment of the present application;

FIG. 13 is a schematic illustration of a brake mechanism according to an embodiment of the present application in a disassembled configuration;

FIG. 14 is a cross-sectional view of a braking mechanism according to an embodiment of the present application;

FIG. 15 is a schematic view of an installation of a brake mechanism according to an embodiment of the present application;

FIG. 16 is a schematic view of a first sprocket of a braking mechanism according to an embodiment of the present application;

FIG. 17 is a schematic structural diagram of a brake disc of a braking mechanism according to an embodiment of the present disclosure;

FIG. 18 is a schematic structural diagram of a brake disc of a braking mechanism according to an embodiment of the present disclosure;

FIG. 19 is a cross-sectional view of a brake rotor of a braking mechanism according to an embodiment of the present application;

FIG. 20 is a schematic structural view of a second sprocket of a braking mechanism according to an embodiment of the present application;

FIG. 21 is a cross-sectional view of a second sprocket of a braking mechanism according to an embodiment of the present application;

FIG. 22 is a schematic exterior view of a brake mechanism according to an embodiment of the present application;

figure 23 is a schematic illustration of a second friction surface of a braking mechanism according to an embodiment of the present application;

figure 24 is a schematic illustration of a second friction surface of a braking mechanism according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

As shown in fig. 1 to 24, a brake mechanism includes:

the brake disc comprises a driving disc 1, wherein the driving disc 1 is in linkage connection with a motor 6, and a plurality of circular grooves 11 are formed in the opposite surfaces of the driving disc 1 and a brake disc 2;

the brake disc 2 is coaxially arranged with the driving disc 1 and can slide along an axial piece 51; the brake disc 2 is provided with tapered grooves 21 which correspond to the circular grooves 11 one by one, and the tapered grooves 21 are arranged opposite to the circular grooves 11 to form accommodating spaces with variable distances; the outer circumferential wall of the brake disc 2 is provided with a first friction surface 22;

the ball 3 is rotatably arranged in the accommodating space;

the friction seat 4 is provided with a second friction surface 41 which is contacted with the first friction surface 22 to realize braking on the inner circumferential wall of the friction seat 4;

elastic limit structure 5, elastic limit structure 5 is used for controlling the direction of 2 axial motion of brake discs and the distance of motion, in this application's some embodiments, elastic limit structure 5 includes axial component 51, elastic component 52 and locating part 53, axial component 51 axial sets up, one end with brake disc 2 sliding connection, the other end is connected with power take off 7, locating part 53 fixed connection is in on axial component 51, elastic component 52 cover is established on axial component 51, one end by brake disc 2 is spacing, the other end by locating part 53 is spacing, when elastic component 52 takes place deformation or resets, brake disc 2 axial slip makes the contact or the separation of first friction surface 22 and second friction surface 41.

The ball 3 is limited in the containing space defined by the circular groove 11 and the tapered groove 21, when the driving disc 1 starts to rotate under the action of the motor 6, the ball 3 rotates together with the driving disc 1, the brake disc 2 does not rotate, because the torque difference exists between the driving disc 1 and the brake disc 2, the ball 3 deviates from the original rotation axis and acts on the conical surface of the tapered groove 21, the elastic limit structure 5 is compressed under the pressure of the ball 3, so that the brake disc 2 slides axially and is far away from the driving disc 1, the first friction surface 22 moves downwards to be separated from the second friction surface 41, and the braking is released. Similarly, when braking is needed, the motor 6 stops rotating, the torque difference between the driving disc 1 and the brake disc 2 disappears, the ball 3 returns to the original rotation axis, the elastic element 52 resets to push the brake disc 2 to axially slide and approach the driving disc 1, and the first friction surface 22 is attached to the second friction surface 41 to realize braking.

According to the scheme, a practical electromagnet and a complex control circuit of the practical electromagnet are not needed, when the driving disc 1 inputs the rotating torque and loses the rotating torque, the torque difference between the driving disc 1 and the braking disc 2 controls the motion state of the ball 3, and then the deformation state of the elastic piece 52 is controlled, so that the braking effect is realized, the structure is simple, and the braking effect is good.

The elastic element 52 may be a compression spring or a spring plate, and the shape of the spring plate may be selected according to the magnitude of the pressure, for example, a Z-shaped spring plate may be selected.

In some embodiments of the present application, in order to ensure the friction effect between the first friction surface 22 and the second friction surface 41, to prevent the first friction surface 22 and the second friction surface 41 from being worn away due to long-term use and losing the braking effect, as shown in fig. 1, 2, 23 and 24, the friction seat 4 includes a friction plate 42, a friction arm 43 and a friction arm seat 44, the friction plate 42 is provided in an arc shape to be fitted with the first friction surface, the second friction surface is an inner side wall of the friction plate 42, the inner side wall of the friction arm 43 is provided with an arc surface adapted to the outer side wall of the friction plate 42, the friction plate 42 and the arc surface are detachably connected, a mounting hole is formed in the side wall of the friction arm seat 44, the friction plate 42 penetrates through the mounting hole, in cooperation with the first friction surface, the friction arm 43 is fixedly connected to the friction seat 4. The friction arm 43 and the friction seat 4 may be fixedly connected by bolts, or by common fixed connection methods such as welding and clamping, and the welding is firm, and the bolt connection may be detachable, for example, threaded holes may be provided at both ends of the friction arm 43 for installing bolts.

In order to keep the motion state of each ball 3 consistent, the force applied to the brake disc 2 is uniform, and the motion state is stable, in some embodiments of the present application, the circular grooves 11 are uniformly distributed on a circumference with the same radius.

In order to avoid noise generated by the collision of the driving disk 1 and the brake disk 2 with the axial member 51 or other components, which may occur during rotation of the driving disk 1 and the brake disk 2, in some embodiments of the present application, a limiting groove 23 is provided at the position where the brake disk 2 is engaged with the elastic member 52, and an end of the elastic member 52 extends into the limiting groove 23. The stopper groove 23 is provided to stop one end of the elastic member 52.

The limiting member 53 is used to axially limit one end of the elastic member 52, so that the elastic member 52 deforms under the action of pressure instead of moving downward, and may have a variety of setting forms, for example, the limiting member 53 may be a nut screwed to the axial member 51, or a sheet member welded perpendicularly to the axial member 51, in some embodiments of the present application, the limiting member 53 has a first bottom plate 531 and a first limiting edge 532, the first limiting edge 532 is disposed on a side of the first bottom plate 531 where the elastic member 52 abuts, and the limiting member 53 is fixedly connected to the axial member 51 through the first bottom plate 531. The stopper 53 limits one end of the elastic member 52. The first base plate 531 is screwed to the reducer input shaft of the axial member 51.

In order to reinforce the limiting member 53, the limiting member 53 further includes a safety seat 54, the safety seat 54 may also have a plurality of structures, and the nut may be screwed with the axial member 51, in some embodiments of the present application, the safety seat 54 has a second bottom plate 541 and a second limiting edge 542, the second limiting edge 542 is disposed on one side of the first bottom plate 531 and is fixedly connected with the second bottom plate 541, and the safety seat 54 is fixedly connected with the axial member 51 through the second bottom plate 541. The second bottom plate 541 is in threaded connection with the speed reducer input shaft of the axial member 51 through threads.

The driving disk 1 can be arranged in various ways, and can be a driving disk directly connected with an output shaft of the motor 6, as shown in fig. 12, or a driven disk driven by the motor 6, as shown in fig. 15. In some embodiments of the present application, as shown in fig. 4 and 5, the driving disc 1 includes a first disc surface, a transmission shaft hole 12 is disposed at a central position of the first disc surface, the driving disc 1 is linked with the motor output shaft 66 through the transmission shaft hole 12, and the circular groove 11 is disposed on a lower surface of the first disc surface. The driving disk 1 is a driving disk directly connected with the output shaft 66 of the motor. The linkage connection can adopt the common mode of linkage with the rotating shaft of the motor 6, for example, the following structure can be adopted to realize linkage. As shown in fig. 6 and 7, the transmission shaft hole 12 includes a first shaft hole 12a and a second shaft hole 12b that are coaxially arranged up and down, the inner diameter of the first shaft hole 12a is smaller than the inner diameter of the second shaft hole 12b, a first step 64 is formed at the transition of the first shaft hole 12a and the second shaft hole 12b, the motor output shaft 66 is provided with a second step 61, the motor output shaft 66 is matched with the first shaft hole 12a, and the upper surface of the driving disc 1 is blocked by the second step 61; the second shaft hole 12b is matched with a sealing cover 62, the upper surface of the sealing cover 62 is blocked by the first step 64, the sealing cover 62 is connected with the motor output shaft 66 through a hexagon socket head cap screw 63, and a first flat key 65 is arranged between the first shaft hole 12a and the motor output shaft 66, so that the driving disc 1 and the motor output shaft 66 synchronously rotate. The axial limiting of the driving disc 1 is realized through the blocking of the first step 64 and the second step 61, the synchronous rotation of the driving disc 1 and the motor output shaft 66 is realized through the first flat key 65, and the linkage connection of the driving disc 1 and the motor output shaft 66 is realized.

In some other embodiments of this application, the driving disk 1 includes a second disk surface, a first rotating shaft hole is provided at a central position of the second disk surface, the driving disk 1 is rotatably connected with the rotating shaft through the first rotating shaft hole, a sprocket is provided on an outer circumferential wall of the second disk surface, the driving disk 1 is driven by the sprocket and the chain to the motor 6, and the circular groove 11 is provided on a lower surface of the second disk surface. The driving disc 1 is a driven wheel which is in chain transmission with the output shaft of the motor 6, and the output shaft of the motor 6 is also provided with a transmission chain wheel.

The power output mechanism 7 is a mechanism that rotates in synchronization with the brake disk 2 and transmits power of the brake disk 2, and may be a speed reducer or another rotating member that is provided coaxially with the brake disk 2 and is capable of transmitting power. In some embodiments of the present application, as shown in fig. 1 to fig. 3, the power output mechanism 7 is a speed reducer, the axial member 51 is a shaft of the speed reducer, the speed reducer is coaxial with the motor 6, the brake disc 2 is slidably connected to the shaft of the speed reducer through a spline, the limiting member is fixedly connected to the shaft of the speed reducer, and the elastic member 52 is sleeved between the brake disc 2 and the limiting member 53. The reducer outputs power on the brake disc 2, and the reducer input shaft serves as an axial member 51 and provides a mounting site for the elastic member 52 and the limiting member 53. In addition, in order to stabilize the rotating effect of the brake disk 2, the reducer input shaft is disposed adjacent to the motor output shaft 66 without contacting.

In other partial embodiments of the present application, the power output mechanism 7 is a rotating member capable of transmitting power, which is disposed coaxially with the brake disk 2. As shown in fig. 13 to 22, the driving disc 1 is a first sprocket 1A, the power output mechanism 7 is a second sprocket 7A, as shown in fig. 16, the first sprocket 1A is a ring-shaped sprocket, the circumferential wall of the outer side of the ring-shaped sprocket is provided with sprocket teeth, and the lower surface of the ring-shaped sprocket is provided with a circular groove 11; as shown in fig. 20 and 21, the second sprocket 7A has a third disc surface 7A1, and teeth, an annular collar 7A2 and axial members 51 which are arranged on the third disc surface 7A1, a third step 7A3 is arranged on an outer circumferential wall of the annular collar 7A2, the upper end of the first sprocket 1A is blocked and limited by the third step 7A3, a rotating shaft 7A4 is arranged at a central position of the third disc surface 7A1, the teeth are arranged on the outer circumferential wall of the third disc surface 7A1, the axial members 51 and the annular collar 7A2 are fixed on one side of the third disc surface 7A1 and extend towards the brake disc 2, and the axial members 51 are arranged inside the annular collar 7A 2; as shown in fig. 17, 18 and 19, the brake disc 2 is provided with a first friction surface 22, a first connecting surface 24 and a second connecting surface 25 from outside to inside, the first friction surface 22 is arranged on the outer circumferential wall of the brake disk 2, the second connection surface 25 is arranged on the inner side of the annular collar 7a2 and is parallel to the third disk surface 7a1, the second connection face 25 is provided with a first through hole 251 through which the axial member 51 passes, and a second through hole 252 for passing the rotation shaft 7a4, the first connecting surface 24 connects the first friction surface 22 and the second connecting surface 25 along the lower end of the first sprocket 1A, the lower end of the annular collar 7a2 and the inner side wall of the annular collar 7a2, the tapered groove 21 is arranged at the position where the first connecting surface 24 corresponds to the circular groove 11, and the first connecting surface 24 and the annular shaft ring 7a2 are in transmission through a second flat key.

The first chain wheel 1A is contacted with the brake disc 2 through the ball 3, when the first chain wheel 1A is started, there is a torque difference between the brake wheel and the first sprocket 1A, the torque difference causes the balls 3 to deviate from the original rotation axis and act on the tapered surface of the tapered groove 21 of the brake disc 2 to generate an axial thrust, when the axial pushing force is greater than the elastic force of the elastic member 52, the elastic member 52 is compressed, the brake disk 2 slides axially away from the second sprocket 7A and the first sprocket 1A, the first friction surface 22 separates from the second friction surface 41, the braking is released, and thereafter, the second sprocket 7A, the balls 3, and the brake disk 2 are integrated, the rotary motion is transmitted to the second chain wheel 7A through a flat key arranged between the annular shaft ring 7A2 and the brake disc 2, and the second chain wheel 7A drives the escalator to run through chain teeth.

Since the first sprocket 1A has the limitation of specification in the specific use process, we further provide a fourth step 1A1 on the inner circumferential wall of the first sprocket 1A, the fourth step 1A1 cooperates with the annular collar 7a2 to form an annular groove, the first connecting surface 24 is provided with an annular protrusion 241 cooperating with the annular groove, and the tapered groove 21 is disposed on the top surface of the annular protrusion 241. By providing the fourth step 1A1, we can also adjust the size of the first sprocket 1A and the second sprocket 7A, which also saves space.

In addition, a first flat key groove 7a5 is arranged on the inner side circumferential wall of the annular shaft ring 7a2, a second flat key groove 242 is arranged on the opposite surface of the first connecting surface 24 and the inner side wall of the annular shaft ring 7a2, and a second flat key is arranged in a space formed by matching the first flat key groove 7a5 and the second flat key groove 242. The flat key groove is formed in the inner side wall of the annular shaft ring 7A2, so that the size and strength of the flat key can be increased, and the energy transmission effect is better. Wherein, the axial member 51 is a screw or a straight rod.

The application also provides a braking method, which comprises the following steps:

s1: the motor 6 drives the driving disc 1 to rotate, a torque difference is generated between the driving disc 1 and the brake disc 2, the ball 3 deviates from the original rotation axis, the ball 3 generates axial thrust on the outer conical surface of the conical groove surface, the elastic piece 52 is compressed under the pressure of the ball 3, the brake disc 2 axially slides and is far away from the driving disc 1, the first friction surface 22 moves downwards to be separated from the second friction surface 41, and braking is released;

s2: the motor 6 stops rotating, the torque difference between the driving disc 1 and the brake disc 2 disappears, the compressed spring recovers the elastic force generated by deformation, the ball 3 is pushed to return to the original rotating axis, the axial thrust of the ball 3 to the conical groove surface disappears, the brake disc 2 slides axially under the pushing of the elastic force and is close to the driving disc 1, and the first friction surface 22 is tightly attached to the second friction surface 41 to realize braking.

The application also provides an engineering motor, the engineering motor comprises the brake mechanism.

The application also provides an elevator, which comprises the brake mechanism, wherein the elevator is a traction type vertical ladder, a forced driving type vertical ladder or an escalator.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present application.

Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.