WO2011153917A1

WO2011153917A1 - Plate wheel hub brake

Info

Publication number: WO2011153917A1
Application number: PCT/CN2011/075124
Authority: WO
Inventors: 韩伍林; 王建伟
Original assignee: 石家庄五龙制动器股份有限公司
Priority date: 2010-06-12
Filing date: 2011-06-01
Publication date: 2011-12-15
Also published as: CN101857178A

Abstract

A plate wheel hub brake is provided, which has a structure that a dead plate (1) is connected with a movable plate (2) with a plate surface being opposite to that of the dead plate (1). an electromagnetic coil (3), a brake spring (4) and a manual brake release device (5) are provided in the dead plate (1), respectively. The outer side of the movable plate (2) is connected with a brake scotch (6) and is in threaded connection with the dead plate (1) by a screw (7) passing through the movable plate (2). A sliding guide pillar (8) is connected between the dead plate (1) and the movable plate (2), tightly matched with one of the dead plate (1) and the movable plate (2) and slidingly matched with the other one. By setting the sliding guide pillar (8), the motion wear of a support part of the movable plate (2) is reduced, the abrasive resistance of the plate wheel hub brake is improved, the arrangement of an external shock absorption mechanism on the plate wheel hub brake is possible, and the service life of the brake can be improved to 10,000,000 times.

Description

Plate wheel brake

Technical field

The present invention relates to an electromagnetic brake, and more particularly to a plate type hub brake.

Background technique

At present, a plate type wheel brake used in an elevator has a structure in which a movable plate (an armature) opposite to a plate surface is connected to a stationary plate (yoke), and electromagnetic coils for adsorbing moving plates are respectively installed in the static plates. The brake spring and the manual release device for the external push plate are connected with a brake shoe on the outer side of the movable plate, and four hollow screws are connected to the four corners of the movable plate. The function of the four hollow screws is to adjust the movement gap between the moving plate and the static plate. Secondly, the bolts are inserted from the four hollow screws to lock the brake and the motor casing. The third is the moving plate. The motion plays a guiding role and carries the shear forces experienced during braking. However, due to the movement and wear caused by the frequent movement of the moving plate, and the processing precision of the four through holes of the four hollow screws on the four corners of the moving plate, the coupling formed by the hollow screws of the roots is formed. The uneven force of the support, guide and fixing mechanism is not subject to the braking shear force and the gravity of the brake. Usually only three of the screws, or even two hollow screws at a diagonal position, are Load bearing. This uneven force condition further accelerates the wear of the support portion of the moving plate and affects the service life of the brake.

In addition, the cushions of the existing plate type wheel brakes are generally built-in, that is, disposed on the opposite faces of the static plate or the moving plate to reduce the impact force of the moving plate on the surface of the static plate, thereby reducing the friction of the brake. Instantaneous impact noise. However, since the internal working temperature of the brake is high, the cushion is extremely susceptible to thermal deformation, and the wear of the cushion is increased during operation, so that the cycle of the brake damping adjustment work for reducing noise is shortened and the number of times is increased.

Since the four hollow screws of the brake plate and the inner hole friction surface of the movable plate are not easy to be worn, the service life of the existing plate wheel brake is generally not affected by the above two unfavorable factors. More than 3 million times.

Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to provide a structurally improved plate type wheel brake for solving the problem of inconvenience and inconvenient use of the shock absorbing mechanism caused by wear of the moving plate and thermal deformation of the cushion, thereby facilitating the plate wheel brake. Use and adjust to extend the life of the plate wheel brakes.

The present invention is realized in that: a plate type hub brake is provided with a plate-opposing moving plate on a static plate, and an electromagnetic coil, a brake spring and a manual release device are respectively installed in the static plate, A brake shoe is connected to the outer side of the movable plate, and a screw threaded through the movable plate is threadedly coupled to the static plate, and a sliding guide column is pierced between the static plate and the movable plate. The sliding guide post is in a tight fit with one of the static plate and the movable plate, and is in a sliding fit with the other.

The invention adds a sliding guide column on the static plate and the moving plate, and the function thereof is to effectively decompose the function of the screw which has the functions of guiding, adjusting and supporting, that is, the screw at this time only retains the gap adjustment and the support. The sliding guide column acts as a guiding mechanism for the movement of the moving plate and a receiving mechanism for the braking force of the brake. Since the screw position is retained in the original position of the brake, the sliding guide post can be placed on the gravity receiving point line of the brake and the braking shear line, and the sliding guide column is set. The number is the least. The result is that the weight of the moving plate and the shearing force generated during braking are all supported on the sliding guide column, thereby avoiding the wear of the screw and the deflection or offset of the moving plate, thereby overcoming the force of the moving plate. All defects. The sliding guide column is tightly coupled with one of the static plate or the movable plate, so that the sliding guide column and the connecting body (the static plate or the moving plate) form a stable integral structure, and the opposite moving body is formed. The sliding fit of the guide post and the tunnel, after the sliding guide post is subjected to wear-resisting treatment, the sliding fit can reduce the wear of the moving support portion, thereby improving the wear resistance of the plate-type hub brake.

A surface wear-resistant layer or a wear-resistant sleeve is formed on a surface of one or both of the sliding engagement portions between the sliding guide post and the static plate or the movable plate. The surface wear-resistant layer can be formed on the surface of the sliding section of the sliding guide column, or in the sliding hole in the static plate or the movable plate slidingly matched with the sliding guide column, and also on the surface of the sliding guide column or the sliding channel A surface wear layer is formed. Similarly, the wear sleeve can be disposed on the surface of the sliding section of the sliding guide post, or in the sliding hole in the static plate or the movable plate slidingly matched with the sliding guide column, and also in the sliding section of the sliding guide column. A wear sleeve is provided on both the surface and the sliding tunnel.

The invention can greatly improve the anti-wear performance of the sliding guide column or the sliding channel by reducing the wear resistance of the sliding guide column or the sliding hole by providing the surface wear layer or the wear-resistant sleeve on the surface of one or both sides of the sliding mating portion, thereby greatly reducing the wear of the moving support portion of the moving part, thereby greatly Improved wear resistance and service life of the plate wheel brakes.

The sliding guide post is tightly engaged with the movable plate, and the sliding end of the sliding guide column extends into the sliding hole of the static plate, and the outer side of the sliding plate is externally reduced on the static plate. The shock mechanism has a tip end of the sliding end of the sliding guide post on the outer shock absorbing mechanism.

With this structure, the built-in cushion in the original plate type wheel brake can be moved outward, and the working noise of the brake can be reduced by the action of the sliding guide column connected to the movable plate to the external shock absorbing mechanism. The configuration of the external shock absorbing mechanism is firstly made possible by the arrangement of the sliding guide column. Secondly, the working environment temperature of the external shock absorbing mechanism is substantially close to the external temperature at which the brake is located, and thus the cushion is easy to be at a high temperature. The defects of wear and deformation can be effectively overcome, and the number of brake shock adjustment adjustments can be reduced accordingly; again, the peripheral type shock absorbing mechanism makes the adjustment and replacement of the cushion not disassemble, thus making adjustment convenient. Fast.

The outer shock absorbing mechanism is provided with a shock absorbing pad and a top plate in the end cover, the end cover is fixed on the static plate by a fastener, and the top plate is sleeved at the end of the sliding guide column. The diameter of the shaft.

The outer shock absorbing mechanism is provided with a damper spring in the end cover, the end cover is fixed on the static plate by a fastener, and a sleeve with an outer convex end is sleeved on the sliding guide pillar On the reduced diameter thin shaft, the outer convex portion of the sleeve is pressed against the damper spring in the end cover, and the inner port of the sleeve is placed on the variable shoulder of the sliding guide post.

The external shock absorbing mechanism is provided with a cushion in a sheath integrated with the static plate, and an adjusting wire plug is screwed into the port of the sheath, and the adjusting wire is plugged on the cushion The outer side.

The screw passes through a through hole of the movable plate and is screwed into a screw hole of the static plate.

An axially penetrating core hole is formed in the screw, a screw hole is formed in the static plate, and a through hole opposite to the screw hole is opened in the rotating plate, and the screw passes through the screw hole A through hole on the movable plate is screwed into the screw hole of the static plate.

The invention reduces the movement and wear of the support portion of the moving plate by the arrangement of the sliding guide column, improves the wear resistance of the plate type wheel brake, and makes the setting of the external shock absorbing mechanism on the plate type wheel brake, thereby avoiding the cushion High temperature deformation and wear. The coexistence of these two advantages in the plate wheel brakes greatly extends the service life of the brakes. Experiments have shown that the service life of the plate wheel brake of the present invention reaches 10 million times.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

Figure 2 is a plan view of Figure 1.

3 and 4 are schematic views showing the structure of two external shock absorbing mechanisms used in the present invention.

5 and 6 are structural schematic views of two external shock absorbing mechanisms on the plate type wheel brake.

Figure 7 is a schematic view showing a connection mode between the movable plate and the stationary plate.

detailed description

As shown in FIG. 1 and FIG. 2, the basic structure of the plate type wheel brake of the present invention is unchanged, that is, the static plate 1 as a yoke and the movable plate 2 as an armature are included, and the plates of the static plate 1 and the movable plate 2 are opposed to each other. In the static plate 1, the electromagnetic coil 3, the brake spring 4 and the manual release device 5 are respectively installed according to the original structure, and the brake shoes 6 are fixedly connected to the outer side of the movable plate 2, and are disposed at the four corners of the movable plate 2 There is a through hole, and the screw 7 passes through the through hole on the movable plate 2, and is screwed into the screw hole on the static plate 1. The screw hole on the static plate 1 may be a thread blind hole, and is only used for fastening the screw 7. On the two sides of the static plate 1, two upper and lower mounting ears may be respectively arranged, and holes are formed in the mounting ears for wearing. A fastener that is attached to the motor housing to secure the brake. The screw hole on the static plate 1 may also be in the form of a threaded, one-piece composite hole for the optical hole, and the screw hole on the static plate 1 is opposite to the through hole on the movable plate 2, in the screw 7 is formed in the axial through core hole; the screw 7 passes through the through hole on the moving plate 2, and is screwed into the screw hole on the static plate 1, and the fastening screw can pass through the screw hole of the static plate 1. The aperture section is passed through the core hole of the adjustment screw 7 to be fixed to the motor casing.

In FIG. 7, the present invention can also be provided with a mounting lug 16 on the static plate 1 and/or the movable plate 2, respectively. The screw 7 passes through the through hole on the movable plate 2, and is connected to the mounting lug 16 of the static plate 1. In the screw hole.

Two sliding guide columns 8 are connected between the static plate 1 and the movable plate 2, and the two sliding guide columns 8 are respectively disposed on the upper and lower sides of the brake shoe 6, and are located on the longitudinal axis symmetry line of the brake, so that It can balance load bearing and stress. The sliding guide post 8 can be tightly engaged with the static plate 1 and slidably engaged with the movable plate 2, or can be tightly engaged with the movable plate 2 and slidably engaged with the stationary plate 1. However, in order to provide the external shock absorbing mechanism, the latter should be adopted, that is, a connection form that is tightly fitted with the movable plate 2 and slidably engaged with the static plate 1. The sliding fit is a sliding fit connection between the guide post and the bore formed between the sliding guide post 8 and the sliding bore drilled in the stationary plate 1 or the movable plate 2. The wear-resisting treatment method may be wear-resisting treatment in the sliding section of the sliding guide column 8; the surface wear-resistant layer, such as a nitrided layer or a ceramic sprayed layer, may also be formed in the hole of the sliding joint portion; Or a wear sleeve is disposed in the sliding hole drilled in the moving plate 2. Thus, the problem of poor abrasion resistance of the static plate 1 or the movable plate 2 made of soft iron is well overcome.

For the plate type hub brake equipped with the external shock absorbing mechanism, the sliding guide post 8 and the movable plate 2 are tightly fitted, the sliding end of the sliding guide post 8 extends into the sliding hole on the static plate 1, and the external damping mechanism is disposed on the static plate. On the outer side of the sliding channel, the end of the sliding end of the sliding guide post 8 is placed on the outer shock absorbing mechanism. The external shock absorbing mechanism can be implemented in a variety of ways.

In Fig. 1, the external shock absorbing mechanism is provided with a cushion 9 and a top plate 10 in an outwardly protruding end cover 11, and the end cover 11 is fixed to the positioning circular slot on the static plate 1 by a fastener, and the top plate 10 is The sleeve is sleeved at the reduced diameter thin shaft at the end of the sliding guide post 8. At the moment of the impact of the moving plate 2 to the stationary plate 1, the end of the sliding guide post 8 pushes the top plate 10 first, and the shock pad 9 is pressed by the top plate 10, thereby achieving the purpose of damping.

In FIG. 3, the outer shock absorbing mechanism is provided with a damper spring 13 in the end cover 11, and the end cover 11 is fixed to the static plate 1 by a fastener, and a variable shoulder is provided on the sliding end of the sliding guide post 8. A sleeve 12 having an outer convex end at one end is sleeved on the reduced diameter thin shaft of the variable shoulder of the sliding guide post 8. The outer convex portion of the sleeve 12 is pressed against the damper spring 13 in the end cover 11, and the sleeve is sleeved. The inner port of the barrel 12 is placed on the tapered shoulder on the sliding guide post 8. The damper spring can use a compression spring or a butterfly spring. Thus, the sliding guide post 8 can be used to push the sleeve 12, and then the annular outer convex edge on the sleeve 12 is used to urge the damping spring to absorb the shock. Of course, the shock absorbing spring can also be replaced by a cushion.

In Fig. 4, the outer damper mechanism has a sheath 14 integrally formed with the static plate on the outer side of the stationary plate 1, and a cushion 9 is disposed in the sheath 14, and is screwed in the port of the sheath 14. There is an adjustment plug 15 which is placed on the outer side of the cushion 9. In this way, an adjustable external shock absorbing mechanism can be formed, and the sliding end of the sliding guide post 8 can be formed into a cylindrical body with a flat end face, thereby eliminating the production of the variable diameter rod.

Applicable to the external shock absorbing mechanism on the plate wheel brake, there are many other ways to achieve. The two external damper mechanisms shown in FIG. 5 and FIG. 6 are provided with a sliding shaft 17 in the static plate 1. One end of the sliding shaft 17 is placed on the inner surface of the movable plate 2, and the other end of the sliding shaft 17 is placed at the top. On the outer shock absorbing mechanism on the outer side of the static plate 1.

Claims

A plate type wheel brake is provided with a plate-opposing moving plate (2) on a stationary plate (1), and an electromagnetic coil (3), a brake spring (4) and an electromagnetic spring (4) are respectively arranged in the static plate (1). a manual release device (5) is connected to a brake shoe (6) on an outer side of the movable plate (2), and a screw (7) penetrating the movable plate (2) is threadedly coupled to the static plate ( 1) above, characterized in that a sliding guide post (8) is penetrated between the static plate (1) and the movable plate (2), and the sliding guide post (8) and the static plate are pierced (1) One of the moving plates (2) is a tight fit, and the other is a sliding fit.
A plate type wheel brake according to claim 1, wherein one or both of the sliding engagement portions between the sliding guide post (8) and the stationary plate (1) or the moving plate (2) are provided. The surface is provided with a surface wear layer or a wear sleeve.
The plate type wheel hub brake according to claim 1 or 2, wherein the sliding guide post (8) and the moving plate (2) are tightly fitted, and the sliding end of the sliding guide post (8) extends into In the sliding channel on the static plate (1), an outer shock absorbing mechanism is disposed on the outer surface of the static plate (1) opposite to the sliding hole, and the end of the sliding end of the sliding guide column (8) is at the top Said on the external shock absorption mechanism.
A plate type wheel brake according to claim 3, wherein said outer damper mechanism is provided with a cushion (9) and a top plate (10) in the end cover (11), said end cover (11) It is fixed to the static plate (1) by a fastener, and the top plate (10) is sleeved at a reduced diameter thin shaft at the end of the sliding guide post (8).
A disc hub brake according to claim 3, wherein said outer damper mechanism is provided with a damper spring (13) in the end cap (11), said end cap (11) being fixed by a fastener On the static plate (1), a sleeve (12) having an outer convex end at one end is sleeved on the reduced diameter thin shaft of the sliding guide column (8), and the sleeve (12) is convex. Along the damping spring (13) in the end cap (11), the inner port of the sleeve (12) is placed on the variable shoulder of the sliding guide post (8).
A plate type wheel brake according to claim 3, wherein said outer damper mechanism is provided with a damper (9) in a sheath (14) integral with said stationary plate (1), An adjustment plug (15) is threaded into the port of the sheath (14), and the adjustment plug (15) is placed on the outer side of the cushion (9).
A plate type wheel brake according to claim 1, 2, 4, 5 or 6, wherein said screw (7) passes through a through hole in said movable plate (2), and is screwed at said static In the screw hole on the plate (1).
A plate type wheel brake according to claim 1, 2, 4, 5 or 6, wherein an axially penetrating core hole is formed in said screw (7), and said static plate (1) is opened a screw hole having a through hole opposite to the screw hole in the movable plate (2), the screw (7) passing through a through hole in the moving plate (2), being screwed in the screw hole Said in the screw hole on the static plate (1).