CN217135306U

CN217135306U - Braking device of coal breaker motor

Info

Publication number: CN217135306U
Application number: CN202123178164.8U
Authority: CN
Inventors: 黄名丹; 李秀达; 李秀丹; 刘煜铿
Original assignee: Comec Guangzhou Technology Co ltd
Current assignee: Comec Guangzhou Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-08-05
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses a arresting gear of coal breaker motor relates to motor technical field, including the motor, be located the brake subassembly in the motor main shaft outside, be located the drive mechanism of motor main shaft surface and be located the motor bottom and through the base that construction bolt and nut dismantlement formula are connected, the brake subassembly includes outer solid frame, spacing support, swing lever, electro-magnet one, electro-magnet two, lift floodgate frame and fixed floodgate frame. The utility model discloses inside electro-magnet one establishes ties mutually with the power line of electro-magnet two's coil way and motor, and magnetic pole adsorption affinity between the two is eliminated, and then can make swing lever whereabouts, and the lift brake frame that swing lever tip set up can descend, holds tightly motor spindle to reach the effect of quick emergency braking to the main shaft realization of motor, break down suddenly when circuit system, perhaps under the condition of outage, the function of braking still can be realized, has effectively ensured braking effect.

Description

Braking device of coal breaker motor

Technical Field

The utility model relates to a arresting gear of coal breaker motor relates to motor technical field.

Background

Along with the high-speed development of industry, the utilization ratio requirement to the energy is higher and higher, in the course of working in the colliery, the coal breaker is common processing equipment, be one of the equipment commonly used in broken coal and broken coal gangue production line, the colliery gets into the coal breaker feed inlet to the discharge gate, the coal rubbing crusher improves on old-fashioned hammer crusher and comes, be the coal rubbing crusher of a novel structure, this coal rubbing crusher does not have the screen bottom, but adopts upper and lower two-stage rotor crushing, the ejection of compact granularity is more even, and superfine, can control below 2 millimeters.

The following problems exist in the prior art:

in the operation process of the existing coal crusher, an electric motor is generally used as a driving source, and the electric motor is a device for converting electric energy into mechanical energy. The electromagnetic power generating device utilizes an electrified coil to generate a rotating magnetic field and acts on a rotor to form magnetoelectric power rotating torque. The crushing roller is driven to rotate inside the machine body to crush coal, the motor mainly comprises a stator and a rotor, the direction of the forced movement of an electrified lead in a magnetic field is related to the current direction and the magnetic induction line direction, the working principle of the motor is that the magnetic field acts on the current stress, the motor used in the coal crusher has large rotating movement speed and acceleration, and the main shaft inertia effect of the motor can continue to move under the condition that a system is accidentally broken down or suddenly cut off, so that the potential safety hazard is very large.

In a traditional motor braking mode, a reverse connection circuit mode is usually adopted in a motor for braking, two phase-change power lines are exchanged, and a rotating magnetic field is opposite to brake.

SUMMERY OF THE UTILITY MODEL

The utility model provides a braking device of a coal breaker motor, one of which aims to have the function of emergency braking after the motor breaks down, and solves the problem that the inertia action of a main shaft of the motor can continue to move and has great potential safety hazard when the system breaks down or is cut off suddenly; the other purpose is to solve the problem that the traditional braking method cannot respond in time when a circuit fails so as to achieve the purpose of effectively guaranteeing the braking effect.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides a arresting gear of coal breaker motor, includes the motor, is located the braking subassembly in the motor main shaft outside, is located the drive mechanism of motor main shaft surface and is located the motor bottom and through the base that construction bolt and nut dismantlement formula are connected, braking subassembly includes external solid frame, spacing support, swing lever, electro-magnet one, electro-magnet two, lift floodgate frame and fixed floodgate frame.

The fixed brake frame is installed on the surface of the base through being provided with mounting bolts and nuts, and the fixed brake frame is located the lower surface of motor front end main shaft, the lift brake frame is located the upper surface of motor front end main shaft, and the tip of lift brake frame is provided with the swing lever, electro-magnet two is installed at the top of swing lever, and the center department of swing lever has spacing support through being provided with bearing swing joint, electro-magnet one is installed at the inboard top of spacing support.

The utility model discloses technical scheme's further improvement lies in: the bottom of the swing lever is movably connected with the surface of the fixed brake frame through a spring, and the spring is positioned on the left side of a main shaft at the front end of the fixed motor.

The utility model discloses technical scheme's further improvement lies in: the bottom of the swing lever is movably connected with the surface of the fixed brake frame through a spring, and the spring is positioned on the left side of the main shaft of the fixed motor.

The utility model discloses technical scheme's further improvement lies in: the transmission mechanism comprises a driving rotating wheel, a driven output wheel and a transmission belt, wherein the outer surfaces of the driving rotating wheel and the driven output wheel are movably connected through the transmission belt.

The utility model discloses technical scheme's further improvement lies in: the surface and the front end of the fixed brake frame are provided with an outer fixing frame, and the front side of an inner cavity of the outer fixing frame is detachably connected with the front end of the inner side of the driving rotating wheel through a bearing.

The utility model discloses technical scheme's further improvement lies in: the inner cavity of the driving rotating wheel is connected with the surface of the front end spindle of the motor in a meshed mode close to the rear end, and the driving rotating wheel is located in front of the lifting brake frame and the fixed brake frame.

The utility model discloses technical scheme's further improvement lies in: the extension fixing rod is positioned on the left side of the brake assembly, and the front end of the bottom of the limiting support is installed at the top of the outer fixing frame.

Owing to adopted above-mentioned technical scheme, the utility model discloses relative prior art, the technological progress who gains is:

1. the utility model provides a arresting gear of coal breaker motor, and is rational in infrastructure, when the inside crushing roller pivoted motor of drive coal breaker breaks down and stalls, because the inside electro-magnet of braking component establishes ties mutually with the power line of the coil winding way of electro-magnet two and motor, the magnetic pole adsorption affinity between the two of electro-magnet one and electro-magnet is eliminated, and then can make swing lever whereabouts, the lift brake frame that swing lever tip set up can descend, the fixed brake frame that the combination is located motor spindle below is held tightly motor spindle, and then the rotational speed of its main shaft when can reducing the motor stall, in order to reach the effect of quick emergency braking to the main shaft realization of motor.

2. The utility model provides a arresting gear of coal breaker motor, because the mode of the inside electro-magnet of braking subassembly one and the power line of electro-magnet two way and motor series connection mutually, at this in-process, the motor breaks down, can lead to magnetic force to eliminate between the electro-magnet, in order to trigger braking work, at this in-process, the unable operation that influences braking subassembly of trouble of motor self, when circuit system breaks down suddenly, perhaps under the condition of outage, the function of braking still can be realized, effectively ensured braking effect.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of a second view structure of the present invention;

FIG. 3 is a schematic structural view of the brake assembly of the present invention;

fig. 4 is a schematic view of the top view structure of the present invention.

In the figure: 1. a base; 2. an electric motor; 3. a coal crusher; 4. a transmission mechanism; 41. a driving runner; 42. a driven output wheel; 43. a drive belt; 5. a brake assembly; 51. an external fixing frame; 52. a limiting bracket; 53. a swing lever; 54. an electromagnet I; 55. an electromagnet II; 56. lifting the brake frame; 57. fixing a brake frame; 6. extending the fixing rod; 7. a spring.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

example 1

As shown in fig. 1-3, the utility model provides a arresting gear of coal breaker motor, including motor 2, be located the braking subassembly 5 in the motor 2 main shaft outside, be located the drive mechanism 4 of motor 2 main shaft surface and be located motor 2 bottom and through base 1 that mounting bolt and nut dismantlement formula are connected, base 1's top and lean on the right still through mounting bolt and mounting nut dismantlement formula be connected with coal breaker 3, coal breaker 3's top is provided with the opening, be convenient for coal raw materials material loading crushing, coal breaker 3's bottom is provided with the discharge gate that can seal and open and shut simultaneously, so that coal raw materials after the breakage carries out ejection of compact work.

In this embodiment, the braking assembly 5 includes an external fixing frame 51, a limiting bracket 52, a swing lever 53, a first electromagnet 54, a second electromagnet 55, a lifting brake frame 56 and a fixed brake frame 57, wherein the first electromagnet 54 and the second electromagnet 55 inside the braking assembly 5 can be energized to generate electromagnetism, the first electromagnet 54 and the second electromagnet 55 are both composed of an iron core and a conductive winding, and the outside of the iron core is wound with a conductive winding matched with the power of the iron core.

Furthermore, the conductive windings inside the first electromagnet 54 and the second electromagnet 55 are connected in series with a current circuit of the motor 2, a circuit of the motor 2 is composed of a power isolation switch, a fuse, an alternating current contactor, a thermal relay, a start button and a stop button, when the motor 2 operates normally, the conductive windings inside the first electromagnet 54 and the second electromagnet 55 are electrified, and the conductive windings and the second electromagnet have magnetic adsorption force.

When the short circuit phenomenon appears in the circuit due to the fact that the motor 2 breaks down, the electromagnet can be eliminated through magnetic force between 54 and the second electromagnet 55, braking operation is triggered, in the operation process of the braking assembly 5, the circuit fault of the motor 2 plays a triggering function, the operation of the braking assembly 5 cannot be influenced, further, when the circuit system breaks down suddenly or is in a power failure condition, the braking function can still be achieved, and the braking effect is effectively guaranteed.

The fixed brake frame 57 is installed on the surface of the base 1 through installing bolts and nuts, the fixed brake frame 57 is located on the lower surface of a main shaft at the front end of the motor 2, the lifting brake frame 56 is located on the upper surface of the main shaft at the front end of the motor 2, the end portion of the lifting brake frame 56 is provided with the swinging lever 53, the top portion of the swinging lever 53 is provided with the second electromagnet 55, the center of the swinging lever 53 is movably connected with the limiting support 52 through a bearing, when the first electromagnet 54 is subjected to magnetic adsorption after a conductive winding inside the second electromagnet 55 is electrified, the swinging lever 53 is inclined, the lifting brake frame 56 arranged on the end portion of the swinging lever 53 can be separated from the main shaft of the motor 2, and the main shaft of the motor 2 keeps a normal rotating speed to output torque.

The top of the inner side of the limiting bracket 52 is provided with a first electromagnet 54, the bottom of the swing lever 53 is movably connected with the surface of the fixed brake frame 57 through a spring 7, the spring 7 is positioned on the left side of the main shaft of the fixed motor 2, when the motor driving the crushing roller inside the coal crusher to rotate stops due to failure, the first electromagnet 54 inside the braking assembly and the 55-winding loop circuit of the second electromagnet are connected in series with the power circuit of the motor, the magnetic pole adsorption force between the first electromagnet 54 and the second electromagnet 55 is eliminated, and the swing lever 53 connected with the second electromagnet 55 resets under the elastic potential energy of the spring 7.

Furthermore, the lifting brake frame 56 arranged at the end part of the swing lever 53 can descend, and the descending of the lifting brake frame 56 is combined with the fixed brake frame 57 positioned below the main shaft of the motor 3 to attach and hold the main shaft of the motor 2 tightly, so that the rotating speed of the main shaft of the motor 3 can be reduced when the motor 3 stops suddenly, and the main shaft of the motor 3 can be rapidly braked emergently.

Example 2

As shown in fig. 1-4, on the basis of embodiment 1, the utility model provides a technical solution: preferably, the end of the swing lever 53 is provided with an extension fixing rod 6, the bottom of the extension fixing rod 6 is installed on the surface of the base 1, and the extension fixing rod 6 can fix and limit the swing lever 53.

The transmission mechanism 4 comprises a driving rotating wheel 41, a driven output wheel 42 and a transmission belt 43, the outer surfaces of the driving rotating wheel 41 and the driven output wheel 42 are movably connected through the transmission belt 43, and when the main shaft of the motor 2 is braked and limited, the driven output wheel 42 is used for controlling the rotation of the crushing roller in the coal pulverizer 3.

The surface and the front end of the fixed brake frame 57 are provided with an outer fixing frame 51, the front side of the inner cavity of the outer fixing frame 51 is detachably connected with the front end of the inner side of the driving rotating wheel 41 through a bearing, and the outer fixing frame 51 can limit the driving rotating wheel 41.

The inner cavity of the driving rotating wheel 41 is meshed and connected with the surface of the front end main shaft of the motor 2 close to the rear end, the driving rotating wheel 41 is positioned in front of the lifting brake frame 56 and the fixed brake frame 57, the driving rotating wheel 41 stops rotating gradually, the driven output wheel 42 can stop rotating gradually under the connection action of the transmission belt 43, and the driven output wheel 42 is used for controlling the rotation of the crushing roller inside the coal pulverizer 3 so as to achieve the effect of braking the crushing roller.

The extension fixing rod 6 is positioned at the left side of the brake assembly 5, and the front end of the bottom of the limiting bracket 52 is installed at the top of the external fixing frame 51, so that the stability of the brake assembly 5 during operation is guaranteed.

The operation of the braking device of the coal pulverizer motor will be described in detail.

As shown in fig. 1-4, when the braking device of the coal pulverizer motor works, the coal pulverizer 3 is installed at the top of the base 1 close to the right, the electromagnet first 54 and the electromagnet second 55 inside the braking assembly 5 can be energized to generate electromagnetism, the conductive windings inside the electromagnet first 54 and the electromagnet second 55 are both connected in series with the current circuit of the motor 2, when the motor 2 normally runs, the electromagnet first 54 is energized to the conductive winding inside the electromagnet second 55, the electromagnet second 55 has magnetic attraction, when the circuit of the motor 2 is short-circuited, the magnetic force between the electromagnet first 54 and the electromagnet second 55 can be eliminated to trigger the braking operation, in the running process of the braking assembly 5, the circuit fault of the motor 2 plays a triggering function and cannot influence the running of the braking assembly 5, because the winding circuit of the electromagnet first 54 and the electromagnet second 55 inside the braking assembly is connected in series with the power circuit of the motor, the magnetic pole adsorption force between the first electromagnet 54 and the second electromagnet 55 is eliminated, the swing lever 53 connected with the second electromagnet 55 is reset under the elastic potential energy of the spring 7, the lifting brake frame 56 arranged at the end part of the swing lever 53 can descend and be combined with the fixed brake frame 57 to attach and hold the main shaft of the motor 2, the rotating speed of the main shaft of the motor 3 is reduced, the main shaft is emergently braked, the main shaft drives the driving rotating wheel 41 to gradually stop rotating, the driven output wheel 42 can gradually stop rotating under the connection action of the transmission belt 43, and the crushing roller in the coal pulverizer is further braked.

The present invention has been described in detail with reference to the above general description, but it will be apparent to one of ordinary skill in the art that modifications and improvements can be made to the invention. Therefore, modifications or improvements without departing from the spirit of the invention are within the scope of the invention.

Claims

1. The utility model provides a arresting gear of coal breaker motor, includes motor (2), is located braking subassembly (5) in motor (2) main shaft outside, is located drive mechanism (4) of motor (2) main shaft surface and is located motor (2) bottom and base (1) of being connected through construction bolt and nut dismantlement formula, its characterized in that: the brake assembly (5) comprises an external fixing frame (51), a limiting bracket (52), a swinging lever (53), a first electromagnet (54), a second electromagnet (55), a lifting brake frame (56) and a fixed brake frame (57);

fixed brake frame (57) is installed in the surface of base (1) through being provided with construction bolt and nut, and fixed brake frame (57) are located the lower surface of motor (2) front end main shaft, lift brake frame (56) are located the upper surface of motor (2) front end main shaft, and the tip of lift brake frame (56) is provided with swing lever (53), electro-magnet two (55) are installed at the top of swing lever (53), and the center department of swing lever (53) has spacing support (52) through being provided with bearing swing joint, electro-magnet (54) are installed at the inboard top of spacing support (52).

2. The braking device for the motor of the coal pulverizer as set forth in claim 1, wherein: the bottom of the swing lever (53) is movably connected with the surface of the fixed brake frame (57) through a spring (7), and the spring (7) is positioned on the left side of a main shaft at the front end of the fixed motor (2).

3. The braking device for the motor of the coal pulverizer as set forth in claim 2, wherein: an extension fixing rod (6) is arranged at the end part of the swinging lever (53), and the bottom of the extension fixing rod (6) is installed on the surface of the base (1).

4. The braking device for the motor of the coal pulverizer as set forth in claim 1, wherein: the transmission mechanism (4) comprises a driving rotating wheel (41), a driven output wheel (42) and a transmission belt (43), and the outer surfaces of the driving rotating wheel (41) and the driven output wheel (42) are movably connected through the transmission belt (43).

5. The braking device for the motor of the coal pulverizer as set forth in claim 4, wherein: the surface and the front end of the fixed brake frame (57) are provided with an outer fixed frame (51), and the front side of an inner cavity of the outer fixed frame (51) is detachably connected with the front end of the inner side of the driving rotating wheel (41) through a bearing.

6. The braking device for the motor of the coal pulverizer as claimed in claim 5, wherein: the inner cavity of the driving rotating wheel (41) is connected with the surface of a main shaft at the front end of the motor (2) close to the rear end in a meshed mode, and the driving rotating wheel (41) is located in front of the lifting brake frame (56) and the fixed brake frame (57).

7. The braking device for the motor of the coal pulverizer as set forth in claim 3, wherein: the extension fixing rod (6) is positioned on the left side of the brake assembly (5), and the front end of the bottom of the limiting bracket (52) is installed at the top of the outer fixing frame (51).