阅读说明：本技术 电梯盘式制动器 (Disc brake for elevator ) 是由 J.佩尔托马基 A.科佩拉 于 2020-07-28 设计创作，主要内容包括：根据一个方面,提供了一种电梯盘式制动器,包括：制动钳(100,202),其包括制动板(214)和构造成操作制动板(120,214)的制动磁铁(212)；制动衬块(118A,118B,210A,210B),其包括附接到制动板(120,214)的第一制动衬块(118A,210A)和附接到制动钳(100,202)的第二制动衬块(118B,210B),所述制动衬块(118A,118B,210A,210B)构造成当由于制动板(120,214)的运动而抵靠制动盘(114,216)移动时提供制动作用；和弹性装置(102,104,204),其构造成使制动盘(114,216)在制动衬块(118A,118B,210A,210B)之间居中。(According to one aspect, there is provided an elevator disc brake comprising: a brake caliper (100, 202) including a brake plate (214) and a brake magnet (212) configured to operate the brake plate (120, 214); brake pads (118A, 118B, 210A, 210B) comprising a first brake pad (118A, 210A) attached to a brake plate (120, 214) and a second brake pad (118B, 210B) attached to a brake caliper (100, 202), the brake pads (118A, 118B, 210A, 210B) being configured to provide a braking action when moved against a brake disc (114, 216) as a result of movement of the brake plate (120, 214); and a resilient device (102, 104, 204) configured to center the brake disc (114, 216) between the brake pads (118A, 118B, 210A, 210B).)

1. An elevator disc brake comprising:

a brake caliper (100, 202) including a brake plate (214) and a brake magnet (212) configured to operate the brake plate (120, 214);

brake pads (118A, 118B, 210A, 210B) comprising a first brake pad (118A, 210A) attached to a brake plate (120, 214) and a second brake pad (118B, 210B) attached to a brake caliper (100, 202), the brake pads (118A, 118B, 210A, 210B) being configured to provide a braking action when moved against a brake disc (114, 216) as a result of movement of the brake plate (120, 214); and

a resilient device (102, 104, 204) configured to center the brake disc (114, 216) between the brake pads (118A, 118B, 210A, 210B).

2. The elevator disc brake of claim 1, further comprising a brake pin (106) and a support plate (112) configured to secure the brake caliper (100) to the motor body (116), wherein the first set of resilient devices (104) is disposed between the brake caliper (100) and the motor body (116) and the second set of resilient devices (102) is disposed between the brake caliper (100) and the support plate (112).

3. The elevator brake of claim 2, further comprising:

an adjustment member (108) configured to adjust a state of the elastic member (102, 104), the adjustment member (108) being arranged between the support plate (112) and the second set of elastic means (102); and

a locking member (110) configured to lock a position of the adjustment member (108) between the support plate (112) and the second set of resilient means (102).

4. The elevator brake of any of claims 1-3, wherein the resilient device (102, 104) comprises a wire spring.

5. The elevator brake of claim 1 wherein:

the elastic means (204) are arranged between the brake plate (214) and the brake pads (118A, 118B, 210A, 210B); and

the brake caliper (202) is attached to the motor body (206) via a resilient device (204) such that a central portion of the resilient device (204) moves towards the brake disc (216) when the brake plate (204) is operated to provide a braking action.

6. The elevator brake of claim 5, wherein the resilient device (204) comprises sheet metal.

7. An elevator system comprising an elevator disc brake according to any of claims 1-6.

8. A method for installing the elevator brake of any of claims 1-5, the method comprising:

mounting an elevator disc brake to a brake pin (106);

tightening the adjustment member (108) until the spring forces of the first and second sets of resilient members (102, 104) are equal at points where the air gap between the brake pads (118A, 118B) and the brake disc (114) is equal on both left and right sides of the brake disc (114); and

the locking member (110) is screwed via a threaded hole on the support plate (112) to face the adjustment member (108) to fix the position of the adjustment member (108).

Technical Field

The invention relates to an elevator disc brake.

Background

Elevators can use electromechanical brakes as safety devices to apply a braking force to a traction sheave or a rotating axis of a hoisting machine to brake movement of the hoisting machine and thus the elevator car. The electromechanical brake can also be used in rescue situations and, in the event of an operational failure (e.g. an elevator car overspeed situation), in emergency braking to stop the elevator car. Furthermore, electromechanical brakes can be used to protect elevator passengers from accidental movement of the car when the doors of the elevator car are open near the landing. The brake may be opened by using the brake controller to provide a sufficient amount of current to the electromagnet of the brake. The brake may be closed when the current is reduced sufficiently to cause the brake pads to move toward the braking position.

One common type of electromechanical brake is a disc brake. The brake pads of the disc brake are moved under the control of the electromagnet to engage/disengage the brake disc of the traction machine.

A problem with disc brakes is that when the disc brake is open, the air gap between the brake pads and the brake disc is uneven. This can lead to uneven wear of the brake pads if they rub against the brake disc and cause high frequency noise during elevator operation.

Disclosure of Invention

According to a first aspect, an elevator disc brake is provided. An elevator disc brake comprising: a brake caliper including a brake plate and a brake magnet configured to operate the brake plate; a brake pad comprising a first brake pad attached to the brake plate and a second brake pad attached to the caliper, the brake pad attached to the brake plate and configured to provide a braking action when moved against the brake disc as a result of movement of the brake plate; and a resilient device configured to center the brake disc between the brake pads.

In one embodiment, the elevator disc brake further comprises a support plate configured to fasten the brake caliper to the motor body and a brake pin, wherein the first set of resilient devices is arranged between the elevator disc brake and the motor body and the second set of resilient devices is arranged between the brake caliper and the support plate.

In one embodiment, alternatively or additionally, the elevator disc brake further comprises: an adjustment member configured to adjust a state of the elastic member, the adjustment member being disposed between the support plate and the second set of elastic devices; and a locking member configured to lock a position of the adjustment member between the support plate and the second set of resilient means.

In one embodiment, alternatively or additionally, the resilient means comprises a wire spring.

In one embodiment, alternatively or additionally, the resilient means is arranged between the brake plate and the brake pad; the brake caliper is attached to the motor body by an elastic device such that a central portion of the elastic device moves toward the brake disc when the brake plate is operated to provide a braking action.

In one embodiment, alternatively or additionally, the resilient means comprises a metal sheet.

According to a second aspect, an elevator system is provided comprising the elevator disc brake of the first aspect.

According to a third aspect, a method for installing the elevator brake of the first aspect is provided. The method includes mounting an elevator disc brake on a brake pin; tightening the adjustment member until the spring forces of the first and second sets of resilient members are equal at points where the air gap between the brake pad and the brake disc is equal on both left and right sides of the brake disc; and tightening the locking member through the screw hole on the support plate to face the adjustment member to fix the position of the adjustment member.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description help to explain the principles of the invention. In the drawings:

fig. 1A shows an elevator disc brake according to an embodiment.

Fig. 1B shows another view of the elevator disc brake of fig. 1A.

Fig. 2A shows an elevator disc brake according to another embodiment.

Fig. 2B shows another view of the elevator disc brake of fig. 2A.

Fig. 2C shows another view of the elevator disc brake of fig. 2A.

Fig. 2D shows another view of the elevator disc brake of fig. 2A.

Detailed Description

Fig. 1A shows an elevator disc brake according to an embodiment. The elevator disc brake can be used e.g. as a safety device to apply a braking force to the traction sheave or the rotating axis of the hoisting machine to brake the movement of the hoisting machine and thus the elevator car associated with the hoisting machine. The elevator disc brake can also be used in rescue situations and, in the event of an operational failure (e.g. an elevator car overspeed situation), in emergency braking to stop the elevator car. Furthermore, elevator disc brakes can be used to protect elevator passengers from accidental movement of the car when the doors of the elevator car are open near the landing.

The elevator disc brake includes a caliper 100, and the caliper 100 includes a brake disc 114, a brake plate 120, and a brake magnet configured to operate the brake plate 120. The elevator disc brake also includes a brake pad 118A attached to a brake plate 120. Another brake pad 118B is disposed in caliper 100 on the other side of brake disc 114. The brake pads 118A, 118B are configured to provide a braking action when moving against the brake disc 114. Brake magnet 122 is fixedly attached to caliper 100 and thus moves with caliper 100. The elevator disc brake further comprises resilient means 102, 104, the resilient means 102, 104 being configured to centre the brake disc 114 between the brake pads 118A, 118B.

The resilient members 102, 104 may comprise wire springs or other forms of members that decrease in length after being subjected to a force and extend back to their original length after the force is released. The caliper 100 may be fastened to the motor body 116 by using the brake pin 106 and the support plate 112. The caliper 100 may include a hollow portion with an inner diameter slightly larger than the outer diameter of the brake pin 106 such that the brake pin 106 provides support to hold the caliper 100 in place. The first set of wire springs 104 may be disposed between the brake caliper 100 and the motor body 116, and the second set of wire springs 102 may be disposed between the brake caliper 100 and the support plate 112. The support plate 112 securely fastens the elevator disc brake relative to the motor body 116. When the brake magnet current is turned on, the brake plate 120 moves along the brake pin 106 toward the brake magnet 122. When the brake magnet current is switched off, the brake plate 120 moves away from the brake magnet 122 and thus towards the brake disk 114. When the brake plate 120 reaches the brake disc 114, the caliper 100 and the brake magnet 122 move leftward (i.e., toward the support plate 112), which causes the brake pad 118B disposed in the caliper 100 to reach the brake disc 114.

The elevator disc brake may also include an adjustment member 108, e.g., an adjustment nut, configured to adjust the state of the wire springs 102, 104. Adjustment member 108 may be disposed between support plate 112 and second set of wire springs 102. The adjustment member 108 may be moved to a desired position relative to the brake pin 106. As the adjustment member 108 moves, the length of the wire springs 102, 104 decreases, thereby also causing adjustment of the brake pads 118A, 118B relative to the brake disc 114. In one embodiment, the adjustment member 108 has internal threads (e.g., M24 threads) that mate with external threads of the brake pin 106. This moves the adjustment member 108 relative to the brake pin 106.

In addition, a locking member 110 may be used to lock the position of the adjustment member 108 between the support plate 112 and the second set of wire springs 102. The locking member 110 may include a locking screw having external threads (e.g., M6 threads). The support plate 114 may include a hole having internal threads that mate with the external threads of the locking screw. This enables the adjustment member 108 to be securely locked in place when the locking screw is tightened through the hole to contact the adjustment member 108.

Fig. 1B shows another view of the elevator disc brake of fig. 1A.

In one embodiment, the resilient members 102, 104 are, for example, wire springs, for ensuring that both sides of the brake disk 114 have an equal air gap. First, the elevator disc brake is mounted to the brake pin 106. At this time, only the first set of wire springs 104 generate a force, and the brake pad 118B in the caliper 100 abuts against the brake disc 114. The adjustment member 108 is then tightened until the spring forces of the first and second sets of wire springs 102, 104 are equal at the point where the air gaps between the brake pads 118A, 118B and the brake disc 114 are equal in both sides of the brake disc 114. During adjustment, the elevator disc brake moves along the brake pin 106. When adjustment is made, the locking member 110 is tightened (e.g., M6 threads in the support plate 114 and M24 threads in the adjustment member 108 and the stop pin 106) and the adjustment member 108 is secured in their position.

An elevator system comprising one or more elevators may comprise the disc brake shown above for each elevator.

The solution shown above may eliminate friction or slip noise caused by an uneven air gap between the left and right sides of the brake disc. Furthermore, this solution can also be easily readjusted in the field if the rope load affects the alignment of the brake disc or the motor frame. Furthermore, the shown adjustment solution is inexpensive.

Fig. 2A-2D illustrate an elevator disc brake according to another embodiment. The elevator disc brake can be used e.g. as a safety device to apply a braking force to the traction sheave or the rotating axis of the hoisting machine to brake the movement of the hoisting machine and thus the elevator car associated with the hoisting machine. The elevator disc brake can also be used in rescue situations and, in the event of an operational failure (e.g. an elevator car overspeed situation), in emergency braking to stop the elevator car. Furthermore, elevator disc brakes can be used to protect elevator passengers from accidental movement of the car when the doors of the elevator car are open near the landing.

The elevator disc brake includes a caliper 202, the caliper 202 including a brake plate 214 and a brake magnet 212 configured to operate the brake plate 214. The elevator disc brake also includes brake pads 210A, 210B attached to the brake plate 214 and the caliper plate 218 and configured to provide a braking action when moved against the brake disc 114 due to movement of the brake plate 214. The elevator disc brake further comprises a resilient device 204, the resilient device 204 being configured to center the brake disc 114 between the brake pads 210A, 210B.

The resilient means 204 may comprise a metal sheet. The metal sheet 204 may be disposed between the brake plate 214 and the brake pads 210A, 210B, as shown in fig. 2B. The brake caliper 202 is attached to the motor body 206 via a metal sheet such that a central portion of the metal sheet moves toward the brake disc 216 when the brake plate 204 is operated to provide braking action. As shown in fig. 2C and 2D, the metal sheet 204 may be fixed to the motor body 206 only at the end of the metal sheet 204. This allows the central portion of the metal sheet 204 to move as the brake plate 204 pushes the metal sheet 204 towards the brake disc 216. When the brake is opened, the brake plate 214 moves away from the brake disc 216 due to the tension in the metal plate 204. In other words, when no external force is applied to the metal sheet (i.e., when the brake is in the open state), the metal sheet 204 is straight or attempts to reach a straight shape. When an external force is applied to the metal piece 204 (i.e., when the brake plate 214 applies a load to the metal piece 204), the metal piece 204 bends.

An elevator system comprising one or more elevators may comprise the disc brake shown above for each elevator.

The solution shown above may eliminate friction or slip noise caused by an uneven air gap between the left and right sides of the brake disc. Furthermore, the solution also allows even wear of the brake pads.

While there have been shown and described and pointed out fundamental novel features as applied to preferred embodiments thereof, it will be understood that various omissions and substitutions and changes in the form and details of the devices and methods described may be made by those skilled in the art. Those skilled in the art will appreciate that the present disclosure may be practiced without departing from its spirit. Moreover, it should be recognized that structures and/or elements and/or method steps shown and/or described in connection with any disclosed form or embodiment may be incorporated in any other disclosed or described or suggested form or embodiment as a general matter of design choice. Furthermore, in the claims means-plus-function clauses are intended to cover the structures described herein as performing the recited function and not only structural equivalents, but also equivalent structures.

The applicant hereby discloses in isolation each individual feature described herein and any combination of two or more such features, to the extent that such features or combinations are capable of being carried out in accordance with the present specification on a basis of the common general knowledge of a person skilled in the art, irrespective of whether such features or combinations of features solve any problems disclosed herein, and without limitation to the scope of the claims. The applicant indicates that the disclosed aspects/embodiments may consist of any such individual feature or combination of features. In view of the above description it will be evident to a person skilled in the art that various modifications may be made within the scope of the disclosure.