CN110608250A

CN110608250A - Wind vane brake

Info

Publication number: CN110608250A
Application number: CN201910867150.5A
Authority: CN
Inventors: 梅裕裔; 朱才文; 阮社良
Original assignee: ANHUI PIONEERING ELECTROMAGNETIC CLUTCHES Co Ltd
Current assignee: ANHUI PIONEERING ELECTROMAGNETIC CLUTCHES Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2019-12-24

Abstract

The invention discloses a vane brake which comprises an installation plate, a brake disc, a hollow bolt, a magnet yoke, a vane seat and a vane cover, wherein the installation plate is fixedly connected with the brake disc; the brake disc is arranged between the friction disc and the brake armature, the brake disc is sleeved on the gear sleeve, the bottoms of the gear sleeve and the brake disc are provided with the wave springs, the tops of the gear sleeve and the brake disc are provided with the pressing plates through screws, and the upper surface and the lower surface of the brake disc are both provided with the friction discs; the wave spring is arranged between the brake disc and the friction disc, and supports the brake disc, so that the lower brake gap is adjustable, and the problems that the brake disc is contacted with the friction disc under the action of gravity, the lower brake gap is zero, the upper brake gap is approximately equal to a working air gap, and when the motor rotates, an additional friction is generated between the brake disc and the friction disc under the action of gravity, and the service life of the friction disc is shortened are solved.

Description

Wind vane brake

Technical Field

The invention relates to the technical field of brakes, in particular to a weathercock brake.

Background

The electromagnetic brake is in a power-off braking and power-on releasing mode, when a brake coil is electrified, the brake coil generates a magnetic field, an armature of the brake is attracted to move towards a magnetic yoke, a brake main spring is compressed to enable a brake disc to be in a releasing state, a rotating shaft can freely rotate, and a rotating arm of the tower crane can rotate to a target position under the driving of a motor; when the electromagnetic brake is powered off, the electromagnetic force disappears, the armature iron presses the brake disc under the action of the main spring, so that the brake disc is in a braking state, the rotating shaft cannot rotate, the braking and position maintaining effects are achieved, and the work of braking and lifting a heavy object at a fixed position is completed.

The wind vane mechanism can realize the function that the rotating arm of the tower crane can freely rotate along with the wind after tower crane operators leave work or when the tower crane is stopped for a long time and is not used, and prevent the tower crane from being blown down due to the overlarge windward side of the tower arm. After the wind vane mechanism works, under the condition of power failure, the brake is also in a release state, and the tower arm can be freely adjusted to the downwind direction along with the wind, so that the windward area and the windward resistance of the tower arm are minimum, and the tower arm is prevented from toppling over to cause safety accidents.

However, in the prior art, because the wind vane brake is vertically installed, when the brake works, the brake disc can contact the friction disc under the action of gravity, the lower brake gap is zero, the upper brake gap is approximately equal to the working air gap, when the motor rotates, an additional friction caused by the action of gravity is generated between the brake disc and the friction disc, and the service life of the friction disc is shortened; and the wind vane mechanism can not be manually operated at the same time.

Disclosure of Invention

In order to overcome the technical problem, the invention aims to provide a weathervane brake which comprises:

according to the invention, the wave spring is arranged between the brake disc and the friction disc, and supports the brake disc, so that the lower brake gap is adjustable, and the problems that the brake disc is contacted with the friction disc under the action of gravity, the lower brake gap is zero, the upper brake gap is approximately equal to a working air gap, and when the motor rotates, an additional friction is generated between the brake disc and the friction disc under the action of gravity, and the service life of the friction disc is shortened are solved; meanwhile, the electromagnetic brake and the weathercock mechanism are combined, so that two functions of starting up the tower crane and freely rotating the stop rotating arm can be completed, and meanwhile, the weathercock mechanism can be manually operated, so that the operation is more convenient.

The purpose of the invention can be realized by the following technical scheme:

a vane brake comprises a mounting plate, a brake disc, a hollow bolt, a magnet yoke, a vane seat and a vane cover; the brake disc is arranged between the friction disc and the brake armature, the brake disc is sleeved on the gear sleeve, the bottoms of the gear sleeve and the brake disc are provided with the wave springs, the tops of the gear sleeve and the brake disc are provided with the pressing plates through screws, and the upper surface and the lower surface of the brake disc are both provided with the friction discs; the gear sleeve and the friction disc are sequentially sleeved on the motor spindle from top to bottom; mounting plates are arranged outside the brake disc and the friction disc;

a magnet yoke is mounted at the top of the mounting plate, and a brake coil and a main spring are arranged in the magnet yoke;

the wind vane release mechanism is characterized in that a wind vane seat is fixedly mounted at the top of the magnetic yoke, a release handle is horizontally arranged on one side of the wind vane seat, a protective sleeve is sleeved outside the release handle, one end, extending into the wind vane seat, of the release handle is inserted into the horizontally arranged release lever, the release lever is fixed on a vertically arranged release screw rod through a wind vane adjusting nut, a release spring is sleeved outside the release screw rod, one end, far away from the release lever, of the release screw rod is inserted into a wind vane release plate, the wind vane release plate is perpendicular to the release screw rod, a wind vane release pull rod is mounted on the wind vane release plate, and one end, far away from the wind vane release plate, of the wind vane release pull rod is;

and a vane cover is arranged at the top of the vane seat.

As a further scheme of the invention: the joint of the vane cover and the vane seat is provided with a sealing ring, and the joint of the magnet yoke and the mounting plate is provided with a sealing ring.

As a further scheme of the invention: and a dustproof ring and a check ring are arranged at the joint of the friction disc and the motor spindle, and the check ring is positioned right above the dustproof ring.

As a further scheme of the invention: the top of the mounting plate is connected with the magnet yoke through three hollow bolts and cylindrical head bolts.

As a further scheme of the invention: the release lever is connected with the vane seat in a rotating mode through a rotating shaft.

As a further scheme of the invention: the utility model discloses a release handle, buoy handle, release lever, buoy solenoid armature, extension spring, electromagnet seat, solenoid coil cover, buoy solenoid coil, iron core and electromagnet seat are connected to the level below the release handle, the buoy solenoid armature in the buoy handle promotes the buoy seat props the release lever, the slope of buoy solenoid armature sets up, one side that buoy solenoid armature kept away from the buoy handle is connected with the electromagnet seat through the extension spring, install the solenoid coil cover on the electromagnet seat, be provided with buoy solenoid in the solenoid coil cover, the center department of buoy solenoid is provided with the iron core, the iron core is connected with the electromagnet seat, install micro-gap switch.

As a further scheme of the invention: limiting plates are symmetrically arranged on the electromagnet seat and used for limiting the wind vane electromagnetic armature.

As a further scheme of the invention: the brake coil attracts the brake armature, and the main spring drives the brake armature to reset.

As a further scheme of the invention: the weather vane release plate is of a triangular structure, and three vertically-arranged weather vane release pull rods are mounted on the weather vane release plate.

The invention has the beneficial effects that:

the invention can complete two functions of starting up the tower crane and freely rotating the stop rotating arm, firstly electrifying the brake coil, then electrifying the wind vane electromagnetic coil, moving the wind vane release lever upwards under the action of the release spring, attracting the wind vane electromagnetic armature to the position below the release lever, disconnecting the brake power supply, and then disconnecting the wind vane electromagnetic power supply, so that the wind vane electromagnetic armature blocks the release lever, the brake armature connected with the wind vane release pull rod through the release screw cannot press the brake disc, thereby the brake disc is in a release state, and the tower arm can freely rotate along with the wind. When the wind vane electromagnetic armature clamps the wind vane release lever, a normally open contact of a microswitch on the electromagnet seat is in a closed state, so that an electric signal that the wind vane works in place is provided for tower crane operators; when the power supply is switched on and the electromagnetic brake is electrified, the wind vane electromagnetic armature rebounds, and the electromagnetic brake can work normally;

the vane mechanism can also be manually operated: firstly, forcibly moving a wind vane release handle to the tail part of the motor, then pushing a wind vane push handle inwards to enable a wind vane electromagnetic armature to support a wind vane release rod, and then loosening the wind vane push handle and the release handle after the wind vane electromagnetic armature is in place, wherein the electromagnetic brake is in a release state, and the tower arm can freely rotate along with wind;

the invention is provided with the wave spring between the brake disc and the friction disc, the wave spring supports the brake disc, so that the lower brake clearance is adjustable, and the problems that the brake disc can be contacted with the friction disc under the action of gravity, the lower brake clearance is zero, the upper brake clearance is approximately equal to a working air gap, and when a motor rotates, an additional friction is generated between the brake disc and the friction disc under the action of gravity, so that the service life of the friction disc is shortened are solved.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of a weathervane brake according to the present invention;

FIG. 2 is a schematic view of the overall construction of the weathervane brake of the present invention;

FIG. 3 is a schematic view of the interior of the weathercock holder of the weathercock brake of the present invention;

FIG. 4 is a schematic view of the overall structure of the electromagnet base according to the present invention.

In the figure: 1. mounting a plate; 2. a brake disc; 3. a gear sleeve; 4. a hollow bolt; 5. a brake coil; 6. a magnetic yoke; 7. a vane seat; 8. releasing the spring; 9. releasing the screw; 10. a release lever; 11. a vane cover; 12. a weathercock adjusting nut; 13. an electromagnetic coil cover; 14. a tension spring; 15. a vane electromagnetic coil; 16. a vane electromagnetic armature; 17. a protective sleeve; 18. releasing the handle; 19. a vane push handle; 20. a vane release plate; 21. the wind vane releases the pull rod; 22. a screw; 23. pressing a plate; 24. a seal ring; 25. a brake armature; 26. a wave spring; 27. a friction plate; 28. a friction disk; 29. a dust ring; 30. a retainer ring; 31. a main spring; 32. an electromagnet base; 33. a limiting plate; 34. a micro switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a vane brake includes a mounting plate 1, a brake disc 2, a hollow bolt 4, a magnetic yoke 6, a vane seat 7 and a vane cover 11; the brake disc 2 is arranged between a friction disc 28 and a brake armature 25, the brake disc 2 is sleeved on a gear sleeve 3, the bottoms of the gear sleeve 3 and the brake disc 2 are provided with a wave spring 26, the tops of the gear sleeve 3 and the brake disc 2 are provided with a pressure plate 23 through screws 22, and the upper surface and the lower surface of the brake disc 2 are both provided with friction discs 27; the gear sleeve 3 and the friction disc 28 are sequentially sleeved on the motor spindle from top to bottom; the mounting plate 1 is arranged outside the brake disc 2 and the friction disc 28; a magnet yoke 6 is mounted on the top of the mounting plate 1, and a brake coil 5 and a main spring 31 are arranged in the magnet yoke 6; the wind vane release mechanism is characterized in that a wind vane seat 7 is fixedly mounted at the top of the magnetic yoke 6, a release handle 18 is horizontally arranged on one side of the wind vane seat 7, a protective sleeve 17 is sleeved outside the release handle 18, one end, extending into the wind vane seat 7, of the release handle 18 is inserted into a horizontally arranged release lever 10, the release lever 10 is fixed on a vertically arranged release screw 9 through a wind vane adjusting nut 12, a release spring 8 is sleeved outside the release screw 9, one end, far away from the release lever 10, of the release screw 9 is inserted into a wind vane release plate 20, the wind vane release plate 20 is vertically arranged with the release screw 9, a wind vane release pull rod 21 is mounted on the wind vane release plate 20, and one end, far away from the wind vane release plate 20, of the wind vane release pull rod 21 is inserted into a brake; a vane push handle 19 is horizontally arranged right below the release handle 18, the vane push handle 19 pushes a vane electromagnetic armature 16 in a vane seat 7 to support the release lever 10, the vane electromagnetic armature 16 is obliquely arranged, one side, away from the vane push handle 19, of the vane electromagnetic armature 16 is connected with an electromagnet seat 32 through a tension spring 14, an electromagnet sleeve 13 is installed on the electromagnet seat 32, a vane electromagnetic coil 15 is arranged in the electromagnet sleeve 13, an iron core is arranged at the center of the vane electromagnetic coil 15 and connected with the electromagnet seat 32, and a microswitch 34 is installed on the electromagnet seat 32; and a vane cover 11 is arranged at the top of the vane seat 7.

The brake coil 5 is electrified firstly, then the wind vane electromagnetic coil 15 is electrified, the wind vane release lever 10 moves upwards under the action of the release spring 8, the wind vane electromagnetic armature 16 is attracted to the position below the release lever 10, the brake power supply is disconnected at the moment, then the wind vane electromagnetic armature power supply is disconnected, the wind vane electromagnetic armature 16 clamps the release lever 10, the brake armature 25 connected with the wind vane release pull rod 21 through the release screw 9 cannot press the brake disc 2, the brake disc 2 is in a release state, and the tower arm can freely rotate along with the wind. When the wind vane electromagnetic armature 16 clamps the wind vane release lever 10, the normally open contact of the microswitch 34 on the electromagnet seat 32 is in a closed state, so that an electric signal that the wind vane works in place is provided for tower crane operators; when the power supply is switched on and the electromagnetic brake is electrified, the wind vane electromagnetic armature 16 rebounds, and the electromagnetic brake can work normally;

the vane mechanism can also be manually operated: the wind vane release handle 18 is moved forcibly to the tail part of the motor, then the wind vane push handle 19 is pushed inwards, so that the wind vane electromagnetic armature 16 supports the wind vane release lever 10, the wind vane push handle 19 and the release handle 18 are released after the wind vane electromagnetic armature is in place, at the moment, the electromagnetic brake is in a release state, and the tower arm can rotate freely along with wind.

A sealing ring 24 is arranged at the joint of the vane cover 11 and the vane seat 7, and a sealing ring 24 is arranged at the joint of the magnet yoke 6 and the mounting plate 1, so that the sealing effect is good; a dustproof ring 29 and a check ring 30 are arranged at the joint of the friction disc 28 and the motor spindle, and the check ring 30 is positioned right above the dustproof ring 29 and has a good dustproof effect; the top of the mounting plate 1 is connected with a magnetic yoke 6 through three hollow bolts 4 and a cylindrical head bolt; the release lever 10 is rotatably connected with the vane seat 7 through a rotating shaft, so that the release lever 10 can move up and down conveniently; limiting plates 33 are symmetrically arranged on the electromagnet seat 32, and the limiting plates 33 are used for limiting the electromagnetic armature 16 of the wind vane; the brake coil 5 attracts the brake armature 25, and the main spring 31 drives the brake armature 25 to reset.

The vane release plate 20 is of a triangular structure, and three vertically arranged vane release pull rods 21 are mounted on the vane release plate 20.

The working principle of the invention is as follows: the brake coil 5 is electrified firstly, then the wind vane electromagnetic coil 15 is electrified, the wind vane release lever 10 moves upwards under the action of the release spring 8, the wind vane electromagnetic armature 16 is attracted to the position below the release lever 10, the brake power supply is disconnected at the moment, then the wind vane electromagnetic armature power supply is disconnected, the wind vane electromagnetic armature 16 clamps the release lever 10, the brake armature 25 connected with the wind vane release pull rod 21 through the release screw 9 cannot press the brake disc 2, the brake disc 2 is in a release state, and the tower arm can freely rotate along with the wind. When the wind vane electromagnetic armature 16 clamps the wind vane release lever 10, the normally open contact of the microswitch 34 on the electromagnet seat 32 is in a closed state, so that an electric signal that the wind vane works in place is provided for tower crane operators; when the power supply is switched on and the electromagnetic brake is electrified, the wind vane electromagnetic armature 16 rebounds, and the electromagnetic brake can work normally;

the vane mechanism can also be manually operated: firstly, the wind vane release handle 18 is moved forcibly to the tail part of the motor, then the wind vane push handle 19 is pushed inwards, so that the wind vane electromagnetic armature 16 supports the wind vane release lever 10, the wind vane push handle 19 and the release handle 18 are released after the wind vane electromagnetic armature is in place, at the moment, the electromagnetic brake is in a release state, and the tower arm can freely rotate along with wind;

according to the invention, the wave spring 26 is arranged between the brake disc 2 and the friction disc 28, the wave spring 26 supports the brake disc 2, so that the lower brake clearance is adjustable, and the problems that the brake disc 2 is contacted with the friction disc 28 under the action of gravity, the lower brake clearance is zero, the upper brake clearance is approximately equal to a working air gap, and when the motor rotates, an additional friction is generated between the brake disc 2 and the friction disc 28 under the action of gravity, and the service life of the friction disc is shortened are solved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

Claims

1. The wind vane brake is characterized by comprising a mounting plate (1), a brake disc (2), a hollow bolt (4), a magnet yoke (6), a wind vane seat (7) and a wind vane cover (11); the brake disc (2) is arranged between the friction disc (28) and the brake armature (25), the brake disc (2) is sleeved on the gear sleeve (3), the bottoms of the gear sleeve (3) and the brake disc (2) are provided with wave springs (26), the tops of the gear sleeve (3) and the brake disc (2) are provided with pressure plates (23) through screws (22), and the upper surface and the lower surface of the brake disc (2) are both provided with friction discs (27); the gear sleeve (3) and the friction disc (28) are sequentially sleeved on the motor spindle from top to bottom; a mounting plate (1) is arranged outside the brake disc (2) and the friction disc (28);

a magnet yoke (6) is mounted at the top of the mounting plate (1), and a brake coil (5) and a main spring (31) are arranged in the magnet yoke (6);

the top of the magnet yoke (6) is fixedly provided with a vane seat (7), one side of the vane seat (7) is horizontally provided with a release handle (18), a protective sleeve (17) is sleeved outside the release handle (18), one end of the release handle (18) extending into the wind vane seat (7) is inserted into the release lever (10) which is horizontally arranged, the release lever (10) is fixed on a vertically arranged release screw rod (9) through a vane adjusting nut (12), a release spring (8) is sleeved outside the release screw rod (9), one end of the release screw rod (9) far away from the release lever (10) is inserted into the vane release plate (20), the vane release plate (20) is perpendicular to the release screw (9), a vane release pull rod (21) is arranged on the vane release plate (20), one end of the wind vane release pull rod (21) far away from the wind vane release plate (20) is inserted into a brake armature (25);

and a vane cover (11) is arranged at the top of the vane seat (7).

2. The weathervane brake according to claim 1, characterized in that a sealing ring (24) is arranged at the joint of the weathervane cover (11) and the weathervane base (7), and a sealing ring (24) is arranged at the joint of the magnet yoke (6) and the mounting plate (1).

3. The weathervane brake according to claim 1, characterized in that a dust ring (29) and a retainer ring (30) are arranged at the connection of the friction disc (28) and the motor spindle, and the retainer ring (30) is positioned right above the dust ring (29).

4. Weathervane brake according to claim 1, characterized in that the top of the mounting plate (1) is connected to the yoke (6) by three hollow bolts (4) and a cylinder head bolt.

5. The weathervane brake according to claim 1, characterized in that the release lever (10) is rotatably connected to the weathervane mount (7) by a rotating shaft.

6. The weathercock brake according to claim 1, characterized in that a weathercock push handle (19) is horizontally arranged right below the release handle (18), the weathercock push handle (19) pushes a weathercock electromagnetic armature (16) in the weathercock seat (7) to prop the release lever (10), the weathercock electromagnetic armature (16) is obliquely arranged, one side, away from the weathercock push handle (19), of the weathercock electromagnetic armature (16) is connected with an electromagnetic iron seat (32) through a tension spring (14), an electromagnetic coil sleeve (13) is installed on the electromagnetic iron seat (32), a weathercock electromagnetic coil (15) is arranged in the electromagnetic coil sleeve (13), an iron core is arranged at the center of the weathercock electromagnetic coil (15), the iron core is connected with the electromagnetic iron seat (32), and a microswitch (34) is installed on the electromagnetic iron seat (32).

7. The weathervane brake according to claim 6, characterized in that the electromagnet seat (32) is symmetrically provided with a limiting plate (33), and the limiting plate (33) is used for limiting the weathervane electromagnet armature (16).

8. Weathervane brake according to claim 1, characterized in that the brake coil (5) engages the brake armature (25), the main spring (31) bringing the brake armature (25) to a reset position.

9. The weathervane brake according to claim 1, characterized in that the weathervane release plate (20) is a triangular structure, and three vertically arranged weathervane release pull rods (21) are mounted on the weathervane release plate (20).