CN219409066U

CN219409066U - Elevator electromagnetic brake

Info

Publication number: CN219409066U
Application number: CN202320293188.8U
Authority: CN
Inventors: 陈聚; 叶亮; 李威; 洪伟; 骆伟; 赵彬; 梁海腾; 陈通; 席东青
Original assignee: Special Equipment Safety Supervision Inspection Institute of Jiangsu Province
Current assignee: Special Equipment Safety Supervision Inspection Institute of Jiangsu Province
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-07-25
Anticipated expiration: 2033-02-23

Abstract

The utility model discloses an electromagnetic brake for an elevator, which comprises a rope pulley, wherein pressing sheets which can be mutually close to or far away from each other are arranged on two sides of the rope pulley, a brake block is arranged on the inner surface of each pressing sheet, a first bulge is fixedly connected to the positions, corresponding to the brake block, of the two sides of the rope pulley, a second bulge is fixedly connected to the lower part of one side, close to the rope pulley, of each brake block, and a gap is formed between the second bulge and the first bulge. The first bulge is arranged at the position, corresponding to the brake block, on the rope pulley, the second bulge is arranged below the brake block, after the brake block is used for a long time, the brake block is severely worn, the brake block can not play a role in braking, at the moment, the rope pulley can rotate, the first bulge at one side can cross a gap when the rope pulley rotates, at the moment, the whole second bulge can block the rotation of the first bulge, the rotation of the rope pulley is blocked, and the car is prevented from falling caused by the high-speed rotation of the rope pulley.

Description

Elevator electromagnetic brake

Technical Field

The utility model relates to the technical field of elevators, in particular to an electromagnetic brake of an elevator.

Background

In order to stably stop the elevator, a brake is arranged on the rope pulley, the brake in the prior art is generally an electromagnetic brake, the brake also comprises a most common drum brake, the drum brake is structured as shown in figure 1, two sides of the rope pulley 8 are provided with rotatable pressing sheets 5, and when the pressing sheets 5 rotate to be close to the rope pulley 8, the braking sheets 6 can brake the rope pulley 8 to avoid the rotation of the rope pulley 8;

in actual operation, the brake not only plays a role in stabilizing stopping, but also can avoid the rapid falling of the elevator car, but the brake pad 6 can generate larger abrasion due to long-term use, and if the brake pad loses the friction braking effect, the elevator car can fall.

Disclosure of Invention

The utility model aims to provide an electromagnetic brake for an elevator, which solves the problem that a brake block in the prior art can generate larger abrasion after being used for a long time, and can lead to the falling of an elevator car if the brake block loses friction braking effect.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an elevator electromagnetic braking ware, includes the rope sheave, the both sides of rope sheave all are equipped with the preforming that can be close to each other or keep away from each other, the interior surface mounting of preforming has the brake block, the both sides of rope sheave all rigid coupling with the position that the brake block corresponds have first arch, the brake block is close to one side below rigid coupling of rope sheave has the second arch, be equipped with the clearance between second arch and the first arch.

Preferably, the device further comprises bearing blocks positioned at the front end and the rear end of the rope wheel, wherein lower brackets are fixedly connected to two sides below the bearing blocks, and the lower ends of the pressing pieces are in rotary connection with the lower brackets through pin shafts.

Preferably, the upper bracket is fixedly connected above the bearing seat, the electromagnet assembly is arranged above the upper bracket, ejector rods are inserted into two sides of the electromagnet assembly, one ends of the ejector rods away from the electromagnet assembly are rotatably provided with adjusting bolts, adjusting nuts are connected with the adjusting bolts in a threaded manner, and the upper ends of the pressing sheets are rotatably connected with the adjusting nuts.

Preferably, the two sides of the upper bracket are fixedly connected with first guide rods, one ends of the first guide rods, which are far away from the upper bracket, penetrate through the pressing sheets and are fixedly connected with first limiting plates, first springs are arranged between the first limiting plates and the pressing sheets, and the first springs are sleeved outside the circumferences of the first guide rods.

Preferably, a groove is formed in the position, corresponding to the first protrusion, of the upper surface of the second protrusion, a second spring is arranged in the groove, and a pressure head is arranged above the second spring.

Preferably, a second guide rod is inserted into the second spring, the pressing head is fixedly connected to the upper end of the second spring, and a limiting plate is fixedly connected to the lower end of the second guide rod after penetrating through the second spring.

Compared with the prior art, the utility model has the beneficial effects that: the first bulge is arranged at the position, corresponding to the brake block, on the rope pulley, the second bulge is arranged below the brake block, after the brake block is used for a long time, the brake block is severely worn, the brake block can not play a role in braking, at the moment, the rope pulley can rotate, the first bulge at one side can cross a gap when the rope pulley rotates, at the moment, the whole second bulge can block the rotation of the first bulge, the rotation of the rope pulley is blocked, and the car is prevented from falling caused by the high-speed rotation of the rope pulley.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of a prior art electromagnetic brake;

FIG. 2 is a schematic view of the braking state of the present utility model;

FIG. 3 is a schematic view of the structure of the present utility model in a non-braking state;

FIG. 4 is an enlarged view of area A of FIG. 2 in accordance with the present utility model;

fig. 5 is an enlarged view of region B of fig. 3 in accordance with the present utility model.

In the figure: 1. an electromagnet assembly; 2. a push rod; 3. an adjusting bolt; 4. an adjusting nut; 5. tabletting; 6. a brake pad; 7. a pin shaft; 8. a rope pulley; 81. a first protrusion; 9. a lower bracket; 10. an upper bracket; 11. a bearing seat; 12. a second protrusion; 13. a first spring; 14. a first guide bar; 16. a pressure head; 17. a second guide bar; 18. a second spring; 19. a limiting plate; 20. a groove.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Referring to fig. 2 and 3, in the embodiment of the utility model, an electromagnetic brake for an elevator comprises a rope pulley 8, wherein two sides of the rope pulley 8 are respectively provided with a pressing sheet 5 which can be mutually close to or mutually far away from each other, the electromagnetic brake also comprises bearing seats 11 positioned at the front end and the rear end of the rope pulley 8, two sides below the bearing seats 11 are fixedly connected with a lower bracket 9, the lower ends of the pressing sheets 5 are rotationally connected with the lower bracket 9 through pin shafts 7, and the pressing sheets 5 can rotate on the lower bracket 9, so that the two pressing sheets 5 can be opened and closed;

with reference to fig. 2 and 3, a brake pad 6 is mounted on the inner surface of the pressing piece 5, and the brake pad 6 can play a role in setting up a car when the pressing piece 5 rotates toward the sheave 8;

with continued reference to fig. 2 and 3, in order to avoid the brake pad 6 from being worn after long-time working and resulting in poor braking performance, the two sides of the rope pulley 8 are fixedly connected with first protrusions 81 at positions corresponding to the brake pad 6, the lower part of one side of the brake pad 6, which is close to the rope pulley 8, is fixedly connected with second protrusions 12, gaps are arranged between the second protrusions 12 and the first protrusions 81, namely, the second protrusions 12 can support the protrusions 81 after the brake pad loses braking capability, so that the situation that a car falls due to high-speed rotation of the rope pulley 8 is avoided;

referring to fig. 2 and 3, an upper bracket 10 is fixedly connected above a bearing seat 11, an electromagnet assembly 1 is installed above the upper bracket 10, ejector rods 2 are inserted into two sides of the electromagnet assembly 1, one end, away from the electromagnet assembly 1, of the ejector rods 2 is rotatably provided with an adjusting bolt 3, an adjusting nut 4 is connected to the adjusting bolt 3 in a threaded manner, namely, the electromagnet assembly 1 can push a pressing sheet 5 in a state of driving the ejector rods 2 to stretch, so that the pressing sheet 5 can be away from a rope pulley 8, and then the rope pulley 8 can rotate, otherwise, when the electromagnet assembly 1 drives the ejector rods 2 to shrink, the pressing sheet 5 can be close to the rope pulley 8, so that a brake sheet 6 can be pressed on a first protrusion 81 to avoid the rotation of the rope pulley 8;

further, in order to better press the brake pad 6 on the first protrusion 81 to realize better braking operation in a braking state, the two sides of the upper bracket 10 are fixedly connected with first guide rods 14, one end of the first guide rod 14, which is far away from the upper bracket 10, passes through the pressing sheet 5 and is fixedly connected with a first limiting plate, a first spring 13 is arranged between the first limiting plate and the pressing sheet 5, and the first spring 13 is sleeved outside the circumference of the first guide rod 14, namely, in the state shown in fig. 2, the pressing sheet 5 is extruded by the first spring 13, so that the brake pad 6 can perform better braking operation;

as shown in fig. 2, 3, 4 and 5, a groove 20 is formed in the upper surface of the second protrusion 12 at a position corresponding to the first protrusion 81, a second spring 18 is installed on the groove 20, a pressure head 16 is arranged above the second spring 18, when the brake pad 6 fails, the rope wheel 8 rotates at the moment, the first protrusion 81 on one side can cross the gap to reach the position of the pressure head 16 during rotation, at the moment, the whole second protrusion 12 can block the rotation of the first protrusion 81, further the rotation of the rope wheel 8 is blocked, a car caused by high-speed rotation of the rope wheel 8 is prevented from falling, the second spring 18 can buffer the rotating rope wheel 8, and the first protrusion 81 is prevented from being rapidly impacted on the second protrusion 12;

with continued reference to fig. 2, 3, 4 and 5, further, a second guide rod 17 is inserted into the second spring 18, the pressing head 16 is fixedly connected to the upper end of the second spring 18, the lower end of the second guide rod 17 passes through the second spring 18 and is fixedly connected with a limiting plate 19, the second guide rod 17 can guide the second spring 18, and the limiting plate 19 can prevent the second guide rod 17 from being separated from the groove.

The working principle of the utility model is as follows: when the device is used, the electromagnet assembly 1 can push the pressing sheet 5 in a state of driving the ejector rod 2 to stretch, so that the pressing sheet 5 can be far away from the rope pulley 8, and then the rope pulley 8 can rotate, otherwise, when the electromagnet assembly 1 is driving the ejector rod 2 to shrink, the pressing sheet 5 can be close to the rope pulley 8, and the brake piece 6 can be pressed on the first protrusion 81 to avoid the rotation of the rope pulley 8;

after the brake pad 6 is used for a long time, the brake pad 6 is severely worn, the brake pad 6 can not play a role in braking, at the moment, the rope wheel 8 rotates at the moment, the first bulge 81 on one side can cross the gap to reach the position of the pressure head 16 during rotation, at the moment, the whole second bulge 12 can block the rotation of the first bulge 81, further the rotation of the rope wheel 8 is blocked, the cage caused by the high-speed rotation of the rope wheel 8 is prevented from falling, and the second spring 18 can buffer the rotating rope wheel 8, so that the first bulge 81 is prevented from rapidly striking on the second bulge 12.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an elevator electromagnetic braking ware, includes rope sheave (8), the both sides of rope sheave (8) all are equipped with preforming (5) that can be close to each other or keep away from each other, the interior surface mounting of preforming (5) has brake block (6), its characterized in that: the two sides of the rope wheel (8) are fixedly connected with first protrusions (81) at positions corresponding to the brake blocks (6), second protrusions (12) are fixedly connected below one side, close to the rope wheel (8), of the brake blocks (6), and gaps are formed between the second protrusions (12) and the first protrusions (81).

2. An electromagnetic brake for an elevator according to claim 1, characterized in that: the novel rope pulley is characterized by further comprising bearing blocks (11) positioned at the front end and the rear end of the rope pulley (8), lower brackets (9) are fixedly connected to the two sides below the bearing blocks (11), and the lower ends of the pressing pieces (5) are rotatably connected with the lower brackets (9) through pin shafts (7).

3. An electromagnetic brake for an elevator according to claim 2, characterized in that: the top rigid coupling of bearing frame (11) has upper bracket (10), electromagnet assembly (1) is installed to the top of upper bracket (10), ejector pin (2) have all been inserted to the both sides of electromagnet assembly (1), adjusting bolt (3) are installed in the one end rotation that electromagnet assembly (1) was kept away from to ejector pin (2), threaded connection has adjusting nut (4) on adjusting bolt (3), rotate between the upper end of preforming (5) and adjusting nut (4) and be connected.

4. An electromagnetic brake for an elevator according to claim 3, characterized in that: the two sides of the upper bracket (10) are fixedly connected with first guide rods (14), one ends of the first guide rods (14) far away from the upper bracket (10) penetrate through the pressing sheet (5) and are fixedly connected with first limiting plates, first springs (13) are arranged between the first limiting plates and the pressing sheet (5), and the first springs (13) are sleeved outside the circumferences of the first guide rods (14).

5. An electromagnetic brake for an elevator according to claim 3, characterized in that: the upper surface of second protruding (12) and the position that first protruding (81) correspond have seted up recess (20), install second spring (18) recess (20), the top of second spring (18) is equipped with pressure head (16).

6. An electromagnetic brake for an elevator according to claim 5, wherein: the second guide rod (17) is inserted into the second spring (18), the pressure head (16) is fixedly connected to the upper end of the second spring (18), and the lower end of the second guide rod (17) penetrates through the second spring (18) and is fixedly connected with the limiting plate (19).