Brake disc assembly of magnetic disc brake

Abstract

The utility model discloses a brake disc assembly of a magnetic type disc brake, which relates to the technical field of disc brakes of elevator traction machines, aims at solving the technical problem that the current brake disc assembly can rub a machine body brake surface or a movable plate brake surface in a suspension state, and comprises a traction machine rotating shaft, a traction machine body and a brake body, a traction machine rotating shaft is fixedly connected with a brake body through a hollow bolt, a static plate and a movable plate are arranged in the brake body, at least one set of auxiliary holes are formed in the static plate, a brake disc assembly is arranged at one end of the static plate, and the brake disc assembly comprises a brake disc and a brake disc gear sleeve. The brake disc gear sleeve is connected with the surface of a rotating shaft of the traction machine in a matched mode through the brake disc spline sleeve, friction plates are arranged on the surface of the brake disc, and the brake disc assembly further comprises an adjusting baffle fixedly connected to the rotating shaft of the traction machine. The utility model has the advantage that the clearance between the friction plate and the brake surface of the movable plate and the clearance between the friction plate and the brake surface of the traction machine body are kept about 0.15 mm in an electrified state.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator traction machine disc brakes, and more specifically to a magnetic suction disc brake disc assembly. Background Art

[0002] The elevator brake is an important safety device of the elevator. Its safety and reliability are one of the important factors to ensure the safe operation of the elevator. It can automatically stop the elevator car when the power is cut off. When the elevator stops running, the brake should be able to ensure that the car remains stationary and unchanged in position under 125% of the rated load.

[0003] When the traction machine motor is working, the brake disc assembly is suspended between the braking surface of the fuselage and the braking surface of the brake moving plate. Since the brake disc assembly is not in a fixed state, a certain proportion of the brake disc assembly sometimes rubs against the braking surface of the fuselage or the braking surface of the moving plate. When the rubbing lasts for a long time, it is easy to cause the balance of the brake disc assembly in the suspended state to be damaged, causing it to swing back and forth and rub "left and right". The rubbing sound will not only increase the noise of the elevator and reduce the comfort of riding the elevator, but also cause damage to the friction plate, increasing the safety hazard of the elevator. Therefore, it is particularly important to provide a magnetic brake disc assembly that can keep the brake disc assembly in a suspended state when the traction machine is working. In view of this, we propose a magnetic disc brake disc assembly. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art, meet the actual needs, and provide a magnetic disc brake disc assembly to solve the technical problem that the current brake disc assembly will rub the brake surface of the fuselage or the brake surface of the moving plate in a suspended state.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a magnetic disc brake disc assembly, comprising a traction machine shaft, a traction machine body and a brake body, wherein the traction machine shaft is fixedly connected to the brake body by hollow bolts, the brake body comprises a static plate and a dynamic plate, at least one group of process holes is opened in the static plate, and a brake disc assembly is arranged at one end of the static plate;

[0006] The brake disc assembly comprises a brake disc and a brake disc gear sleeve. The brake disc gear sleeve is connected with the surface of the traction machine shaft through a brake disc spline sleeve. The surface of the brake disc is arranged with a friction plate.

[0007] The utility model provides a brake disc assembly and can adjust the position of the adjusting screw through the process hole, so that the adjusting screw can be adjusted according to the wear degree of the friction plate, which can improve the stability and practicality of the brake disc assembly when in use and enhance the braking efficiency of the friction plate.

[0008] Preferably, the brake disc assembly also includes an adjustment baffle fixedly connected to the traction machine shaft, the adjustment baffle is fixed to the brake disc spline sleeve by screws, an adjustment screw is arranged in the process hole, and the interior of the adjustment baffle is threadedly connected to the surface of the adjustment screw.

[0009] Preferably, at least one set of feeler gauges is arranged on the fuselage braking surface of the traction machine body, the surface of the feeler gauges abuts against one side of the friction plate, and the thickness of the feeler gauges is set to 0.15 mm.

[0010] Preferably, the material of the friction plate is a mixed material of rubber base and ferrite.

[0011] Preferably, at least one group of brake springs and magnetic coils are arranged in the static plate, and one side of the brake spring is fixedly connected to one side of the dynamic plate at the same time.

[0012] Preferably, the static plate and the dynamic plate are both made of magnetic conductive materials.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model designs a brake disc assembly, and can simultaneously use an adjusting screw and a feeler gauge to keep the gaps between the friction plate and the braking surfaces of the moving plate and the traction machine body at about 0.15 mm when the brake body is installed under power-on conditions, so that the brake disc assembly is positioned after suspension, and will not rub against the braking surface of the traction machine body or the braking surface of the moving plate, thereby solving the defect of "left-right" rubbing after suspension of the prior art products.

[0015] 2. The utility model also provides a mixed material of rubber base and ferrite, and by adding 3.5% ferrite, it is possible to utilize the adsorption effect between ferrite and the magnetic field, and rely on the magnetic field radiation generated after the brake body 6 is energized to improve the suspension effect of the friction plate 504. Due to the effect of the magnetic field, the end of the brake disc gear sleeve is tightly attached to the adjusting screw and will always be between the braking surface of the fuselage and the braking surface of the moving plate, further improving the stability of the position of the friction plate when energized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the feeler gauge of the utility model.

[0018] Description of the numbers in the figure:

[0019] 1. Traction machine shaft; 2. Traction machine body; 3. Static plate; 4. Moving plate; 5. Brake disc assembly; 501. Brake disc; 502. Brake disc gear sleeve; 503. Brake disc spline sleeve; 504. Friction plate; 505. Adjustment baffle; 506. Adjustment screw; 6. Brake body; 7. Feeler gauge; 8. Brake spring; 9. Magnetic coil; 10. Process hole. DETAILED DESCRIPTION

[0020] like Figure 1 to Figure 2 As shown, the utility model relates to a magnetic disc brake disc assembly, including a traction machine shaft 1, a traction machine body 2 and a brake body 6. The traction machine shaft 1 is fixedly connected to the brake body 6 by a hollow bolt. The brake body 6 includes a static plate 3 and a dynamic plate 4. The static plate 3 and the dynamic plate 4 are both set as magnetic conductive materials. At least one group of process holes 10 is opened in the static plate 3. By setting the process holes 10, the friction plate 504 can be adjusted again after wear, which improves the convenience and reusability of the device. Nine groups of brake springs 8 and two groups of magnetic coils 9 are arranged in the static plate 3. One side of the brake spring 8 is fixedly connected to one side of the dynamic plate 4 at the same time. At least one group of feeler gauges 7 are arranged on the body braking surface of the traction machine body 2. The surface of the feeler gauge 7 abuts against one side of the friction plate 504. The thickness of the feeler gauge 7 is set to 0.15mm.

[0021] In the embodiment of the utility model, a brake disc assembly 5 is arranged at one end of the static plate 3, and the brake disc assembly 5 includes a brake disc 501 and a brake disc gear sleeve 502. The brake disc gear sleeve 502 is connected to the surface of the traction machine shaft 1 through a brake disc spline sleeve 503. By arranging the brake disc gear sleeve 502 and the brake disc spline sleeve 503, the brake disc assembly 5 can be radially moved at the same time as the traction machine fuselage 2 drives the brake body 6 to rotate. A friction plate 504 is arranged on the surface of the brake disc 501. The material of the friction plate 504 is set to a mixed material of rubber base and ferrite. By adding 3.5% ferrite, the adsorption effect between the ferrite and the magnetic field can be utilized, and the magnetic field radiation generated after the brake body 6 is energized can be relied on to improve the suspension effect of the friction plate 504. Due to the effect of the magnetic field, the brake disc gear sleeve 50 2 ends are tightly attached to the adjusting screw 506, and will always be in the middle of the braking surface of the fuselage and the braking surface of the moving plate 4, with the gap between them being 0.15mm. After the brake disc assembly 5 is suspended and positioned, it can avoid rubbing against the braking surface of the traction machine fuselage 2, and will not rub against the braking surface of the moving plate 4. The brake disc assembly 5 also includes an adjusting baffle 505 fixedly connected to the traction machine shaft 1, and the adjusting baffle 505 is fixed to the brake disc spline sleeve 503 by screws. An adjusting screw 506 is arranged in the process hole 10, and the interior of the adjusting baffle 505 is threadedly connected to the surface of the adjusting screw 506. By setting the adjusting screw 506, the gap between the friction plate 504 and the moving plate 4 can be adjusted while the friction plate 504 is in contact with the feeler gauge 7, so that the gap can be maintained at 0.15mm when the brake body 6 is powered.

[0022] Working principle: This embodiment provides a magnetic disc brake disc assembly. When in use, first insert the feeler gauge 7 between the traction machine body 2 and the friction plate 504 and make it fit with the traction machine body 2. Then, the brake disc assembly 5 is pushed toward the braking surface of the traction machine body 2 by adjusting the screw 506 until the friction plate 504 and the surface of the feeler gauge 7 fit. When the end surface of the adjusting screw 506 is in the same plane, take out the feeler gauge 7 and tighten the adjusting screw 506. Then, adjust the working clearance of the brake body 6 by the hollow bolt. It is adjusted to between 0.25mm and 0.35mm, and the hollow bolt is locked to fix the position of the brake body 6. When the brake body 6 is energized, relying on the magnetic field radiation (i.e., leakage magnetic field) generated by the brake body 6 after being energized, the brake disc assembly 5 is attracted to the end face of the adjusting screw 506 through the magnetic conductivity characteristics of the magnetic field adsorption of the ferrite on the friction plate 504. Due to the effect of the magnetic field, the end of the brake disc gear sleeve 502 is tightly attached to the adjusting screw 506, so that the brake disc assembly 5 is always between the braking surface of the fuselage and the braking surface of the moving plate 4.

[0023] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A magnetic disc brake assembly, comprising a traction machine shaft (1), a traction machine body (2) and a brake body (6), characterized in that: The traction machine shaft (1) is fixedly connected to the brake body (6) by means of a hollow bolt, the brake body (6) comprises a static plate (3) and a dynamic plate (4), at least one group of process holes (10) is provided in the static plate (3), and a brake disc assembly (5) is arranged at one end of the static plate (3); The brake disc assembly (5) comprises a brake disc (501) and a brake disc gear sleeve (502); the brake disc gear sleeve (502) is connected to the surface of the traction machine shaft (1) through a brake disc spline sleeve (503); and a friction plate (504) is arranged on the surface of the brake disc (501).

2. A magnetic disc brake assembly according to claim 1, characterized in that: The brake disc assembly (5) also includes an adjustment baffle (505) fixedly connected to the traction machine shaft (1), the adjustment baffle (505) being fixed to the brake disc spline sleeve (503) by screws, an adjustment screw (506) being arranged in the process hole (10), and the interior of the adjustment baffle (505) being threadedly connected to the surface of the adjustment screw (506).

3. The magnetic disc brake assembly according to claim 1, characterized in that: At least one set of feeler gauges (7) is arranged on the body braking surface of the traction machine body (2), the surface of the feeler gauge (7) abuts against one side of the friction plate (504), and the thickness of the feeler gauge (7) is set to 0.15 mm.

4. A magnetic disc brake assembly according to claim 1, characterized in that: The material of the friction plate (504) is a mixed material of rubber base and ferrite.

5. The magnetic disc brake assembly according to claim 1, characterized in that: At least one group of brake springs (8) and magnetic coils (9) are arranged in the static plate (3), and one side of the brake spring (8) is fixedly connected to one side of the dynamic plate (4).

6. The magnetic disc brake assembly according to claim 1, characterized in that: The static plate (3) and the dynamic plate (4) are both made of magnetic conductive material.

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