CN210919913U

CN210919913U - Power-off brake

Info

Publication number: CN210919913U
Application number: CN201921908494.8U
Authority: CN
Inventors: 张永明
Original assignee: Shaoxing Industrial Science Design And Research Institute Co ltd
Current assignee: Shaoxing Industrial Science Design And Research Institute Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-07-03
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses a power-off brake, which comprises a magnetic yoke, wherein the magnetic yoke is a hollow cylinder, the end surface of the magnetic yoke is provided with an annular groove along the axial direction, a wire mould is arranged in the groove, a wire wrap is wound on the wire mould, the end surface of the magnetic yoke where the groove is positioned is provided with an armature, one side of the armature is provided with a friction plate, a gap is arranged between the friction plate and the armature, the friction plate is connected with a pressing plate through a hexagonal transmission block, a compression spring is arranged in the hollow part of the magnetic yoke, the other end of the compression spring is fixedly connected, friction disc, yoke cavity and coaxial setting, the yoke side surface passes through nut and screw fixed connection clamp plate terminal surface, sets up the yoke side surface and passes through nut and screw fixed connection clamp plate terminal surface, makes device connection structure inseparabler, and compression spring's setting makes the braking start-up in-process, gives the device inner structure buffer power, the sending of noise abatement.

Description

Power-off brake

Technical Field

The utility model belongs to the technical field of braking equipment, concretely relates to lose electric brake.

Background

The power-off brake is a brake which generates friction force by a friction system through the pressure of a spring when electromagnetism is disengaged or released, and then generates braking. The novel brake motor can be matched with a motor to form a novel brake motor, can also be used for a mechanical transmission system, realizes quick parking and accurate positioning, and can perform safe braking in power failure.

The power-off brake consists of iron core, spring, armature, friction plate, brake disc, driving connector and other parts and is used mainly in braking various motors. When the iron core is de-energized, the spring pops the armature out, braking torque is generated on the brake disc through the friction plate to limit the rotation of the brake disc, and the brake disc is connected with the rotor through a transmission connecting device, so that the rotation of the motor rotor is limited. The existing power-off brake has large brake noise and complex structure.

Disclosure of Invention

An object of the utility model is to provide a lose electric brake possesses simple structure, radiating effect is good, advantage that the noise is little.

The utility model adopts the technical proposal that: the utility model provides a power-off brake, including the yoke, the yoke is hollow cylinder, the yoke terminal surface is provided with annular recess of circle along axial direction, install the line mould in the recess, the winding has the solenoid on the line mould, be equipped with armature on the yoke terminal surface at recess place, one side of armature is equipped with the friction disc, be equipped with the clearance between friction disc and the armature, the friction disc passes through the hexagonal drive block and is connected with the clamp plate, compression spring has been put to yoke cavity inside, compression spring's other end fixed connection armature, the clamp plate, armature, the friction disc, yoke cavity and coaxial setting, the yoke side surface passes through nut and screw fixed connection clamp plate terminal surface.

Preferably, three guide posts are further arranged between the magnetic yoke and the pressing plate and are respectively annularly distributed on the surface of the pressing plate, and the screw penetrates through the guide posts and is fixedly connected with the pressing plate.

Preferably, the armature is triangular, three vertex angles of the armature are respectively inwards sunken to form semicircular grooves, and the semicircular grooves are respectively clamped on the surfaces of the guide pillars.

Preferably, the friction plate is provided with a hexagonal through hole, the surface of the hexagonal transmission block is embedded in the hexagonal through hole, the upper end face of the hexagonal transmission block is provided with a circular truncated cone connected with the through hole in the pressing plate, one side face of the hexagonal transmission block is also provided with a screw hole vertically communicated with the built-in hollow, and a positioning screw is arranged in the screw hole.

Preferably, through grooves penetrating the upper end face and the lower end face are respectively arranged on two sides of the hexagonal transmission block, and the inner surfaces of the through grooves are arc-shaped.

Compared with the prior art, the beneficial effects of the utility model are that: 1) the side surface of the magnet yoke is fixedly connected with the end surface of the pressure plate through a nut and a screw, so that the connecting structure of the device is tighter, and the arrangement of the compression spring enables the buffering force to be given to the internal structure of the device in the braking starting process, so that the noise emission is reduced; 2) through grooves penetrating the upper end face and the lower end face are respectively formed in two sides of the hexagonal transmission block, so that heat generated in the starting and braking processes of the device can be conveniently dissipated, and meanwhile, the inner surfaces of the through grooves are arc-shaped, so that the flow of internal air can be accelerated, and the heat dissipation of the device is accelerated; 3) the three guide posts are respectively annularly distributed on the surface of the pressing plate, and the screw penetrates through the guide posts and is fixedly connected with the pressing plate, so that the surface of the screw is prevented from being exposed and rusted for a long time, and the connection stability of the device is improved; 4) the device has the advantages of simple structure, good heat dissipation effect and low noise.

Drawings

FIG. 1 is a schematic structural view of the apparatus;

FIG. 2 is a front view of the present device;

FIG. 3 is a schematic view of the internal structure of the apparatus;

FIG. 4 is a rear view of the present device;

FIG. 5 is a schematic view of the structure of the yoke of the device;

FIG. 6 is a schematic structural diagram of a friction plate of the device;

FIG. 7 is a schematic structural view of the armature of the present device;

fig. 8 is a schematic structural diagram of a hexagonal transmission block of the device.

Description of reference numerals: 1, pressing a plate; 2, an armature iron; 201 a semicircular groove; 3, positioning a screw; 4, a hexagonal transmission block; 401 through grooves; 402 a circular table; 403 screw holes; 5 friction plate; 501 hexagonal through holes; 6, a screw; 7, a guide post; 8, performing line die; 9 magnetic yokes; 10 compressing the spring; 11 a nut; 12 coils of wire; 13 grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1-6, a power-off brake includes a magnetic yoke 9, the magnetic yoke 9 is a hollow cylinder, an annular groove 13 is arranged on an end face of the magnetic yoke 9 along an axial direction, a wire mold 8 is installed in the groove 13, a wire coil 12 is wound on the wire mold 8, an armature 2 is arranged on the end face of the magnetic yoke 9 where the groove 13 is located, a friction plate 5 is arranged on one side of the armature 2, a gap is arranged between the friction plate 5 and the armature 2, the friction plate 5 is connected with a pressure plate 1 through a hexagonal transmission block 4, a compression spring 10 is arranged in the hollow portion of the magnetic yoke 9, the other end of the compression spring 10 is fixedly connected with the armature 2, the pressure plate 1, the armature 2, the friction plate 5 and the magnetic yoke 9 are arranged in a hollow. Set up the yoke side surface and pass through nut and screw fixed connection clamp plate terminal surface, make device connection structure inseparabler, compression spring's setting makes the braking start-up in-process, gives the device inner structure buffer power, reduces sending of noise.

Three guide posts 7 are further arranged between the magnetic yoke 9 and the pressing plate 1 and are respectively annularly distributed on the surface of the pressing plate 1, and the screw 6 penetrates through the guide posts 7 to be fixedly connected with the pressing plate 1. Three guide posts are arranged between the magnetic yoke and the pressing plate and are respectively annularly distributed on the surface of the pressing plate, and the screw penetrates through the guide posts and is fixedly connected with the pressing plate. On the one hand, the long-term exposed rusting of the surface of the screw is prevented, and on the other hand, the connection stability of the device is improved.

Example 2

As shown in fig. 6 to 8, the optimization scheme of the embodiment based on embodiment 1 is as follows: armature 2 is the triangle-shaped form, and the three apex angle of armature 2 is inwards sunken respectively and forms half slot 201, and half slot 201 joint is in guide pillar 7 surface respectively. The semicircular groove that sets up the three apex angle of armature and inwards caves in respectively and form connects in the guide pillar surface for the position at fixed armature place, preventing device take place the skew at the operation in-process, influence braking effect, and simultaneously, the setting of semicircular groove makes armature can make a round trip to slide on the guide pillar surface.

The friction disc 5 is provided with a hexagonal through hole 501, the surface of the hexagonal transmission block 4 is embedded in the hexagonal through hole 501, the upper end face of the hexagonal transmission block 4 is provided with a circular truncated cone 402 to be connected with the through hole in the pressing plate 1, one side face of the hexagonal transmission block 4 is also provided with a screw hole 403 which is vertically communicated with the built-in hollow, and the screw hole 403 is internally provided with a positioning screw 3. The set positioning screw is used for fixing the transmission shaft in the hexagonal transmission block, so that the transmission shaft rotates to drive the friction plate arranged on the outer surface of the hexagonal transmission block to rotate, and otherwise, the transmission shaft is braked to rotate through braking the friction plate.

Through grooves 401 penetrating the upper end face and the lower end face are respectively arranged on two sides of the hexagonal transmission block 4, and the inner surfaces of the through grooves 401 are arc-shaped. The hexagonal transmission block both sides set up the logical groove that link up terminal surface from top to bottom respectively, and the heat that produces is dispelled at device start-up and braking in-process of being convenient for, and simultaneously, logical inslot surface is circular-arc, can accelerate the flow of inside air, and the accelerator apparatus dispels the heat.

Example 3

The utility model relates to a lose electric brake's theory of operation does: when the solenoid 12 is powered on, the armature 2 attracts towards the magnetic yoke 9, the compression spring 10 contracts, a gap is formed between the friction plate 5 and the armature 2, so that the friction force acting on the surface of the friction plate 5 is reduced, the hexagonal transmission block 4 connected with the friction plate 5 rotates under the action of the transmission shaft, when the solenoid 12 is powered off, the armature 2 draws close to the friction plate 5 under the action of the elastic force of the spring 10, and the transmission shaft is decelerated until the transmission shaft stops rotating under the action of the friction force of the armature 2 and the friction plate 5.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a lose electric brake, includes yoke (9), and yoke (9) are hollow cylinder, and yoke (9) terminal surface is provided with annular recess (13) of circle, its characterized in that along axial direction: install line mould (8) in recess (13), the winding has solenoid (12) on line mould (8), be equipped with armature (2) on yoke (9) the terminal surface at recess (13) place, one side of armature (2) is equipped with friction disc (5), be equipped with the clearance between friction disc (5) and armature (2), friction disc (5) are connected with clamp plate (1) through hexagonal driving block (4), compression spring (10) have been put to yoke (9) cavity inside, the other end fixed connection armature (2) of compression spring (10), clamp plate (1), armature (2), friction disc (5), yoke (9) cavity and coaxial setting, yoke (9) side surface passes through nut (11) and screw (6) fixed connection clamp plate (1) terminal surface.

2. The power-loss brake as claimed in claim 1, wherein three guide posts (7) are further disposed between the magnetic yoke (9) and the pressure plate (1) and respectively annularly distributed on the surface of the pressure plate (1), and the screw (6) passes through the guide posts (7) and is fixedly connected with the pressure plate (1).

3. The power-off brake as claimed in claim 2, wherein the armature (2) is triangular, three vertex angles of the armature (2) are recessed inwards to form semicircular grooves (201), and the semicircular grooves (201) are respectively clamped on the surfaces of the guide posts (7).

4. The power-off brake as claimed in claim 1, wherein the friction plate (5) is provided with a hexagonal through hole (501), the surface of the hexagonal transmission block (4) is embedded in the hexagonal through hole (501), the upper end surface of the hexagonal transmission block (4) is provided with a circular truncated cone (402) connected with the through hole in the pressure plate (1), one side surface of the hexagonal transmission block (4) is further provided with a screw hole (403) vertically communicated with the built-in hollow space, and a positioning screw (3) is arranged in the screw hole (403).

5. The electric brake as claimed in claim 1, characterized in that both sides of the hexagonal transmission block (4) are respectively provided with a through groove (401) penetrating through the upper and lower end surfaces, and the inner surface of the through groove (401) is arc-shaped.