Brake wheel of elevator power equipment

Abstract

The utility model relates to the technical field of elevator braking, and discloses an elevator power equipment brake wheel which comprises a hub and a rim arranged on the outer side of the hub, the rim is provided with a plurality of heat dissipation holes, the heat dissipation holes are all through holes and are arranged at equal intervals in the circumferential direction of the rim, the outer wall of the rim is provided with heat dissipation grooves, and the heat dissipation grooves are communicated with the hub. And the plurality of heat dissipation holes are communicated with the heat dissipation groove. When the brake caliper tightly holds the rim, air circulation can be promoted through the heat dissipation holes formed in the surface of the rim, accumulation of heat on a brake wheel is reduced, and the influence of overheating on the brake performance is prevented; as the brake clamp is tightly attached to the surface of the rim during braking, the heat dissipation holes in the attached position are blocked during holding, and the heat dissipation grooves are formed to communicate the heat dissipation holes with external air from the side face; due to the arrangement of the auxiliary heat dissipation mechanism, after the brake wheel stops rotating, the spoilers continue to rotate under the action of inertia, air flow on the inner side of the rim is accelerated, and the heat dissipation efficiency of the brake wheel is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator braking, in particular to a braking wheel for an elevator power device. Background Technique

[0002] The elevator braking system is a key component to ensure the safe operation of the elevator in various situations. During the normal operation of the elevator, the brake is released to allow the elevator to move freely. However, when a power outage, emergency stop or emergency situation occurs, the brake will act immediately to stop the elevator to ensure the safety of passengers. Traditional elevators usually use friction brakes, which rely on friction to prevent the movement of the elevator car. The brake generally includes a brake caliper and a braking wheel or a brake disc. When braking is required, the brake caliper is pushed forward and clamped on the braking wheel or the brake disc, thereby generating frictional resistance to stop the elevator.

[0003] Most of the existing braking wheels do not have a heat dissipation function. A large amount of heat is generated during the braking process of the elevator. If the heat cannot be dissipated in time, it may cause the braking wheel to overheat, which will in turn affect the braking performance and the safe operation of the elevator.

[0004] Therefore, we propose a braking wheel for an elevator power device to solve the problems raised above. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the existing technology in the above background technology, the purpose of the present utility model is to provide a braking wheel for an elevator power device to solve the problems raised in the above background technology.

[0007] (II) Technical Solutions

[0008] To achieve the above purpose, the present utility model is realized through the following technical solutions:

[0009] A braking wheel for an elevator power device includes a hub and a rim arranged on the outside of the hub. A plurality of heat dissipation holes are formed in the rim. The heat dissipation holes are all through holes and are arranged equidistantly along the circumferential direction of the rim. A heat dissipation groove is formed on the outer wall of the rim, and a plurality of the heat dissipation holes are all communicated with the heat dissipation groove.

[0010] Furthermore, an auxiliary heat dissipation mechanism is arranged on the rim. The auxiliary heat dissipation mechanism includes two rail rings fixed on the inner wall of the rim and a spoiler arranged between the two rail rings. The two rail rings are respectively located on both sides of the heat dissipation holes. One end of the spoiler is relatively fixed with extension rods on both sides, and guiding grooves for sliding connection with the two extension rods are respectively formed on the two rail rings.

[0011] Preferably, a roller is rotatably installed on the extension rod, the guiding groove is a T-shaped groove, and the roller is located in the guiding groove and is in rolling connection with the guiding groove.

[0012] Furthermore, the spoiler has a trapezoidal cross-sectional structure, and the width of the end of the spoiler away from the extension rod is greater than that of the end close to the extension rod.

[0013] Furthermore, a plurality of arc-shaped protrusions are provided on both sides of the inner wall of the guiding groove, and the interval between two corresponding arc-shaped protrusions on both side walls is smaller than the diameter of the extension rod.

[0014] Furthermore, the arc-shaped protrusion is made of silica gel material.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] When the brake caliper holds the rim tightly, the plurality of heat dissipation holes opened on the rim surface can promote air circulation, reduce the accumulation of heat on the brake wheel, and prevent the influence of overheating on the braking performance; since the brake caliper is in close contact with the rim surface during braking, the heat dissipation holes at the joint are blocked when holding tightly, and the heat dissipation grooves can communicate the heat dissipation holes with the external air from the side; and the setting of the auxiliary heat dissipation mechanism, due to the inertia after the brake wheel stops rotating, the spoiler continues to rotate, accelerating the air flow inside the rim, and further increasing the air circulation in the heat dissipation holes, thereby further improving the heat dissipation efficiency of the brake wheel. Description of the drawings

[0018] Figure 1 is a schematic structural diagram of the brake wheel of the elevator power equipment of the present utility model;

[0019] Figure 2 is a schematic cross-sectional structural diagram of the brake wheel of the elevator power equipment of the present utility model;

[0020] Figure 3 is an enlarged view at A of the brake wheel of the elevator power equipment of the present utility model;

[0021] Figure 4 is a schematic structural diagram of the spoiler of the brake wheel of the elevator power equipment of the present utility model;

[0022] Figure 5 is a schematic structural diagram of the installation position of the arc-shaped protrusion of the brake wheel of the elevator power equipment of the present utility model.

[0023] In the figure: hub 1, rim 2, heat dissipation hole 3, heat dissipation groove 4, auxiliary heat dissipation mechanism 5, rail ring 51, spoiler 52, extension rod 53, roller 54, guiding groove 55, arc-shaped protrusion 56. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions facing or away from the geometric center of a specific component. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0025] Please refer to Figures 1-5 As shown, the present invention provides a brake wheel for an elevator power device, which includes a hub 1 and a rim 2 provided on the outside of the hub 1. A plurality of heat dissipation holes 3 are formed in the rim 2 along its circumferential direction. The plurality of heat dissipation holes 3 are all through holes, and both ends thereof penetrate the inner and outer walls of the rim 2 to increase the surface area of the brake wheel, promote air circulation, and thus improve the heat dissipation efficiency. A heat dissipation groove 4 is formed on the outer wall of the rim 2. The heat dissipation groove 4 is an annular groove and is coaxially arranged with the rim 2. The plurality of heat dissipation holes 3 are all communicated with the heat dissipation groove 4, which causes the air to be unable to circulate. The setting of the annular heat dissipation groove 4 can avoid the phenomenon that when the brake caliper clamps the outer wall of the rim 2, the heat dissipation holes 3 at the joint between it and the rim 2 are blocked, resulting in the inability of air to circulate, so that the air on both the inner and outer sides of the rim 2 can still flow through the heat dissipation holes 3 through the heat dissipation groove 4, thereby improving the heat dissipation effect.

[0026] An auxiliary heat dissipation mechanism 5 is also provided on the inner side of the rim 2, and its specific structure is as Figure 3As shown in the figure, it includes two rail rings 51, a spoiler 52, and an extension rod 53. The two rail rings 51 are respectively located on both sides of the heat dissipation holes 3, and the outer walls are fixed to the inner wall of the rim 2. The spoiler 52 is arranged between the two rail rings 51 and corresponds to the heat dissipation holes 3. On both sides of one end of the spoiler 52, extension rods 53 are symmetrically fixed. Guide grooves 55 for slidably connecting with the two extension rods 53 are respectively formed on the side walls of the two rail rings 51. The spoiler 52 is circumferentially limited and slid along the guide grooves 55 through the extension rods 53. On both sides of the inner wall of the guide grooves 55, a plurality of arc-shaped protrusions 56 are symmetrically arranged. The arc-shaped protrusions 56 are made of silica gel material. The interval between two corresponding arc-shaped protrusions 56 on both side walls is smaller than the diameter of the extension rod 53. When the rim 2 rotates, the spoiler 52 is driven to slide between the two rail rings 51 by the restriction of the arc-shaped protrusions 56. When the rim 2 is held tightly and stops, the spoiler 52 still slides under the action of inertia, thereby disturbing the air flow between the two rail rings 51, accelerating the air flow rate, and enabling the air outside the rim 2 to quickly flow through the heat dissipation grooves 4 and the heat dissipation holes 3 to the inside of the rim 2, promoting air circulation and improving the heat dissipation efficiency. The silica gel material has good toughness and high temperature resistance. The good toughness is for the extension rod 53 to pass through, and the high temperature resistance is to cope with the high temperature environment during braking.

[0027] As a preferred technical solution of the present utility model: A roller 54 is rotatably installed on the extension rod 53. The guide groove 55 is a T-shaped groove. The roller 54 is located in the guide groove 55 and is in rolling connection with the guide groove 55. The setting of the roller 54 makes the sliding of the extension rod 53 in the guide groove 55 smoother.

[0028] As a preferred technical solution of the present utility model: The spoiler 52 has a trapezoidal cross-sectional structure. The width of the end of the spoiler 52 away from the extension rod 53 is greater than the end close to the extension rod 53. That is, the end of the spoiler 52 away from the extension rod 53 is the "lower base", and the end of the spoiler 52 close to the extension rod 53 is the "upper base". The mass at the "lower base" is greater than the mass at the "upper base", so that the spoiler 52 is as close as possible to the radial direction of the rim 2 when sliding, to drive more air flow. At the same time, the inclined side walls play a guiding role for the air, reducing the influence of air resistance on the sliding of the spoiler 52 and making its sliding more lasting.

[0029] For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances; for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A brake wheel for an elevator power device, comprising a hub (1) and a rim (2) arranged outside the hub (1), characterized in that: The wheel rim (2) is provided with a plurality of heat dissipation holes (3), all of which are through holes and are arranged equidistantly along the circumference of the wheel rim (2); a heat dissipation groove (4) is provided on the outer wall of the wheel rim (2), and all of the plurality of heat dissipation holes (3) are connected to the heat dissipation groove (4).

2. The brake wheel of an elevator power device according to claim 1, characterized in that: The wheel rim (2) is provided with an auxiliary heat dissipation mechanism (5), the auxiliary heat dissipation mechanism (5) comprising two rail rings (51) fixed to the inner wall of the wheel rim (2) and a spoiler (52) arranged between the two rail rings (51), the two rail rings (51) being respectively located on both sides of the heat dissipation hole (3), extension rods (53) being relatively fixed on both sides of one end of the spoiler (52), and guide grooves (55) slidably connected to the two extension rods (53) being respectively provided on the two rail rings (51).

3. The brake wheel of an elevator power device according to claim 2, characterized in that: A roller (54) is rotatably mounted on the extension rod (53); the guide groove (55) is a T-shaped groove; the roller (54) is located in the guide groove (55) and is rollingly connected to the guide groove (55).

4. The brake wheel of an elevator power device according to claim 2, characterized in that: The spoiler (52) has a trapezoidal structure in cross section, and the width of the end of the spoiler (52) away from the extension rod (53) is greater than that of the end close to the extension rod (53).

5. The brake wheel of an elevator power device according to claim 3, characterized in that: A plurality of arc-shaped protrusions (56) are arranged on both sides of the inner wall of the guide groove (55), and the interval between two corresponding arc-shaped protrusions (56) on the two side walls is smaller than the diameter of the extension rod (53).

6. The brake wheel of an elevator power device according to claim 5, characterized in that: The arc-shaped protrusion (56) is made of silicone material.

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