CN217418035U

CN217418035U - Braking device for magnetic suspension elevator

Info

Publication number: CN217418035U
Application number: CN202220135516.7U
Authority: CN
Inventors: 周必友; 尹志华; 尹超
Original assignee: Shenzhen Jiabo Technology Co ltd
Current assignee: Shenzhen Jiabo Technology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-09-13
Anticipated expiration: 2032-01-19

Abstract

The utility model belongs to the technical field of elevators, and discloses a braking device for a magnetic suspension elevator, which comprises a bracket, a brake wheel pivoted on the bracket, a lifting rope wound on the brake wheel, and an electromagnet arranged on the bracket and used for braking the brake wheel; one end of the lifting rope is connected with a driving device of the elevator, the other end of the lifting rope is connected with a lift car of the elevator, and the electromagnet and the driving device are electrically connected with an electric control device of the elevator; the brake wheel is provided with an auxiliary brake assembly which cooperates with a brake shoe fastened to the bracket. With this structural design arresting gear, can brake the braked wheel through the electro-magnet, simple structure and reliable and stable can also pass through the setting of auxiliary brake subassembly simultaneously, and this arresting gear's of further promotion reliability prevents to lead to the fact the car can't hover because of the electro-magnet inefficacy.

Description

Braking device for magnetic suspension elevator

Technical Field

The utility model relates to an elevator technical field especially relates to a arresting gear for magnetic suspension elevator.

Background

Along with the development of the building industry and the improvement of the living standard of residents, the demands of private villas, individual houses and the like on the home elevator are increased, if the traditional lifting rope elevator is adopted, the horizontal vibration problem is very serious, the operation noise is very large, and meanwhile, the track of the traditional elevator requires lubricating oil and regular maintenance, so that the cost is very high. In addition, for the requirements of private villas and small-sized living, the design and manufacturing difficulties of the lifting rope elevator are high, and especially, the workload of installing, maintaining, debugging, inspecting, changing the rope and the like of the steel wire rope is high. Due to the severe wear and corrosion, the service life of the steel cord is short, and its maintenance and replacement become a heavy burden. Therefore, it is becoming impractical to use the conventional rope elevator for private villas and small residential buildings, and there is an increasing need to develop a home elevator suitable for the needs of private villas and small residential buildings.

In the present private villa elevator scheme, generally adopt the screw rod elevator, the screw rod elevator is processed into the rectangle screw thread with the plunger of direct-acting type elevator, installs the big nut that has thrust bearing in the hydro-cylinder top again, then drives the nut rotation through speed reducer (or belt) through the motor to make the elevator that the screw rod jacking car ascended or descend, it is just put a huge screw at the elevator bottom simply to say, along with the rotation of screw the car is ascending and descend. However, the screw elevator has many defects in households, firstly, the noise is too large, and the screw elevator has larger mechanical noise than other elevators because the nut rotates on the screw, and the noise source is closer, so that the noise is easy to affect users when the screw elevator is used at home; secondly, the operation speed is slow, the screw elevator is limited by a mechanical mechanism of the screw elevator, and the screw elevator is propelled by the rotation of the nut on the screw, so the operation speed is slow, the speed is only 0.15m/s, and the speed difference is larger than the speed of 0.4m/s of a common traction type elevator, and the screw elevator cannot meet the requirement of users in the time of driving.

Although some magnetic suspension elevators exist in the prior art, the structure design is not reasonable enough, and the braking device is arranged too complex, so that the cost of the magnetic suspension elevator is relatively high, and the safety and reliability are poor.

The above background disclosure is only provided as an aid to understanding the inventive concept and solutions of the present invention, and it does not necessarily belong to the prior art of this patent application, and it should not be used to evaluate the novelty and inventive step of this application without explicit evidence to show that the above contents are already disclosed at the filing date of this patent application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a arresting gear for magnetic suspension elevator, this arresting gear simple structure, reliable and stable and the cost is also lower.

To achieve the purpose, the utility model adopts the following technical proposal:

a braking device for a magnetic suspension elevator comprises a bracket, a brake wheel pivoted to the bracket, a lifting rope wound on the brake wheel, and an electromagnet arranged on the bracket and used for braking the brake wheel; one end of the lifting rope is connected with a driving device of the elevator, the other end of the lifting rope is connected with a lift car of the elevator, and the electromagnet and the driving device are electrically connected with an electric control device of the elevator; the brake wheel is provided with an auxiliary brake assembly which cooperates with a brake shoe secured to the bracket.

The auxiliary brake component comprises a brake piece pivoted to the side wall of the brake wheel, a spring arranged on the brake wheel and connected with one end of the brake piece, and a limiting piece fastened to the side wall of the brake wheel.

When the centrifugal force generated by the brake piece under the action of the brake wheel is greater than the tension of the spring, one end of the brake piece, which is far away from the spring, is abutted against the brake block, and one end of the brake piece, which is provided with the spring, is abutted against the limiting piece.

When the centrifugal force generated by the brake piece under the action of the brake wheel is smaller than the tension of the spring, one end of the brake piece, which is far away from the spring, is separated from the brake block, and one end of the brake piece, which is provided with the spring, is separated from the limiting piece.

The auxiliary brake components are arranged in two groups and symmetrically arranged on the same side of the brake wheel along the plane where the axis of the brake wheel is located.

And one side wall of the brake wheel, which is far away from the auxiliary brake assembly, is adsorbed with the electromagnet.

The brake wheel comprises a pivot shaft fastened on the support, a grooved pulley rotationally connected with the pivot shaft, and pure iron plates fastened with two outer side walls of the grooved pulley, wherein the pure iron plates are coaxially fastened with the outer side walls of the grooved pulley.

And the pivot shaft of the brake piece penetrates through the pure iron plate and is fastened with the side wall of the grooved pulley.

Wherein the drive means is arranged as a magnetically suspended power means.

The utility model has the advantages that: the utility model provides a braking device for a magnetic suspension elevator, which comprises a bracket, a brake wheel pivoted on the bracket, a lifting rope wound on the brake wheel, and an electromagnet arranged on the bracket and used for braking the brake wheel; one end of the lifting rope is connected with a driving device of the elevator, the other end of the lifting rope is connected with a lift car of the elevator, and the electromagnet and the driving device are electrically connected with an electric control device of the elevator; the brake wheel is provided with an auxiliary brake assembly which cooperates with a brake shoe fastened to the bracket. With this structural design arresting gear, can brake the braked wheel through the electro-magnet, simple structure and reliable and stable can also be through the setting of auxiliary brake subassembly simultaneously, and further this arresting gear's of promotion reliability prevents to lead to the fact the car can't hover because of the electro-magnet inefficacy.

Drawings

Fig. 1 is an isometric view of the bracket of this embodiment assembled with a headblock.

FIG. 2 is an isometric view of the brake wheel of FIG. 1 with the auxiliary brake assembly positioned therein.

Fig. 3 is an exploded view of fig. 2.

In the figure:

1. a support; 2. a brake wheel; 21. a pivot shaft; 22. a sheave; 23. a pure iron plate; 3. a lifting rope; 4. an electromagnet; 5. an auxiliary brake assembly; 51. a braking member; 52. a spring; 53. a stopper; 6. a brake pad.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures associated with the present invention are shown in the drawings, not all of them.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 to 3, the present embodiment provides a braking device for a magnetic levitation elevator, which comprises a bracket 11, a braking pulley 2 pivotally connected to the top of the bracket 11, a lifting rope 3 wound around the braking pulley 2, and an electromagnet 4 disposed on the bracket 11 and used for braking the braking pulley 2, preferably, one end of the lifting rope 3 in the present embodiment is connected to a driving device of the elevator, and the other end of the lifting rope 3 is connected to a car of the elevator through a directional pulley erected on the top of the bracket 11, so as to receive and release the lifting rope 3 through the driving device, thereby achieving lifting of the car, and in order to further control the suspension of the car, both the electromagnet 4 and the driving device in the present embodiment are electrically connected to an electric control device of the elevator; further preferably, the driving device in the present embodiment is preferably a magnetic levitation power device.

Furthermore, in order to further improve the braking effect of the braking wheel 2 and avoid potential damage caused by failure of the electromagnet 4, preferably, the embodiment further provides an auxiliary braking assembly 5 on a side of the braking wheel 2 away from the electromagnet 4, and when the electromagnet 4 fails, the car descends rapidly, and is in a weightless state, the auxiliary braking assembly 5 abuts against a braking block 6 fastened on the bracket 11, so as to limit the rotation of the braking wheel 2, and the specific structural arrangement of the auxiliary braking assembly 5 will be further described in detail later.

More specifically, in this embodiment, in order to improve the braking reliability between the brake wheel 2 and the electromagnet 4, a sidewall of the brake wheel 2 away from the auxiliary brake assembly 5 in this embodiment is attracted to the electromagnet 4 during braking; preferably, the brake wheel 2 in this embodiment includes an articulated shaft 21 fastened to the bracket 11, a sheave 22 rotatably connected to the articulated shaft 21, and a pure iron plate 23 fastened to both outer sidewalls of the sheave 22, preferably, the pure iron plate 23 is fastened coaxially with the sidewalls of the sheave 22, and has an outer diameter equal to that of the sheave 22 and fastened to the outer sidewall of the sheave 22 by screws, and it is known that pure iron is easily magnetized and easily attracted by a magnet, so that when the brake wheel 2 disposed in this way is subjected to an electromagnetic force, the brake wheel 2 is more easily parked, thereby providing a stable and reliable guarantee for stable parking of the elevator.

Furthermore, in order to prevent the brake wheel 2 from being stopped when the electromagnet 4 fails in an abnormal situation, in this embodiment, preferably, an auxiliary brake assembly 5 is disposed on a side wall of the brake wheel 2 away from the electromagnet 4, the auxiliary brake assembly 5 includes a braking member 51 pivoted to the side wall of the brake wheel 2, a spring 52 disposed on the brake wheel 2 and connected to one end of the braking member 51, and a limiting member 53 fastened to the side wall of the brake wheel 2, wherein the pivot shaft 21 of the braking member 51 passes through the pure iron plate 23 and is fastened to the side wall of the sheave 22.

Further preferably, in the embodiment, when the spring 52 is not installed, one end of the braking member 51 after being pivoted will incline towards the outer edge of the braking wheel 2 under the action of its own arm, and when the spring 52 is installed, one end of the braking member 51 inclined towards the outer edge of the braking wheel 2 under the action of the spring 52 will be constrained within the area of the side wall of the braking wheel 2; when the electromagnet 4 fails, the car will fall down at an accelerated speed, so that the brake wheel 2 rotates at an overspeed, at this time, when the centrifugal force generated by the brake piece 51 under the action of the brake wheel 2 is greater than the tension of the spring 52, the brake piece 51 will incline to one side of the outer edge of the brake wheel 2 again away from the spring 52, and then the brake piece 51 is exposed out of the outer edge of the brake wheel 2 and is abutted against the brake block 6 fastened on the bracket 11, and meanwhile, one end of the brake piece 51 provided with the spring 52 is abutted against the limiting piece 53, so as to brake the brake wheel 2; on the contrary, when the centrifugal force generated by the brake member 51 under the action of the brake wheel 2 is smaller than the tension of the spring 52, the brake member 51 is reset under the tension of the spring 52, that is, the end of the brake member 51 away from the spring 52 is separated from the brake pad 6, and the end of the brake member 51 provided with the spring 52 is separated from the limiting member 53, so that the brake wheel 2 normally rotates.

The auxiliary brake component 5 adopting the structural design can effectively improve the braking reliability of the brake wheel 2 and avoid various hidden dangers caused by the failure of the electromagnet 4.

Preferably, in order to improve the reliability of the auxiliary brake assemblies 5 in this embodiment, the auxiliary brake assemblies 5 are provided in two sets and symmetrically arranged on the same side of the braking wheel 2 along the plane where the axis of the braking wheel 2 is located, and after any one set of the two sets of the auxiliary brake assemblies 5 brakes the braking wheel 2, the braking wheel 2 can exert a better braking effect.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. A braking device for a magnetic suspension elevator is characterized by comprising a bracket, a brake wheel pivoted to the bracket, a lifting rope wound on the brake wheel, and an electromagnet arranged on the bracket and used for braking the brake wheel; one end of the lifting rope is connected with a driving device of the elevator, the other end of the lifting rope is connected with a car of the elevator, and the electromagnet and the driving device are electrically connected with an electric control device of the elevator; the brake wheel is provided with an auxiliary brake assembly which cooperates with a brake shoe fastened to the bracket.

2. A braking apparatus for a maglev elevator, according to claim 1, wherein the auxiliary brake assembly includes a braking member pivotally coupled to a sidewall of the braking drum, a spring disposed on the braking drum and coupled to an end of the braking member, and a retaining member fastened to the sidewall of the braking drum.

3. A brake arrangement for a magnetic levitation elevator as claimed in claim 2, characterized in that the end of the brake element remote from the spring abuts against the brake shoe when the centrifugal force generated by the brake wheel on the brake element is greater than the tension of the spring, and the end of the brake element provided with the spring abuts against the stop.

4. A brake rigging for a magnetic levitation elevator according to claim 3, wherein the end of the brake element remote from the spring is spaced from the brake shoe and the end of the brake element at which the spring is located is spaced from the retaining member when the centrifugal force generated by the brake wheel is less than the tension of the spring.

5. Braking device for magnetic levitation elevators as claimed in claim 1, wherein the auxiliary brake assemblies are provided in two groups and symmetrically arranged on the same side of the headblock along the plane of the headblock axis.

6. A brake arrangement for a magnetic levitation elevator as claimed in claim 5, wherein a side wall of the brake drum remote from the auxiliary brake assembly is attracted to the electromagnet.

7. The braking device for a maglev elevator, according to claim 2, wherein the braking wheel includes a pivot shaft fastened to the bracket, a sheave rotatably coupled to the pivot shaft, and a pure iron plate fastened to both outer sidewalls of the sheave, the pure iron plate being fastened coaxially with the outer sidewall of the sheave.

8. A braking apparatus for a magnetic levitation elevator as claimed in claim 7, wherein the pivot axis of the braking member passes through the pure iron plate and is fastened to the side wall of the sheave.

9. A braking device for a magnetic levitation elevator according to claim 1, characterized in that the drive means are arranged as a magnetic levitation power means.