CN217582951U

CN217582951U - Brake releasing mechanism of drum brake

Info

Publication number: CN217582951U
Application number: CN202221013593.1U
Authority: CN
Inventors: 黄晓亮; 王志强
Original assignee: Ningbo Xinda Elevator Accessories Co ltd
Current assignee: Ningbo Xinda Elevator Accessories Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-10-14
Anticipated expiration: 2032-04-27

Abstract

The utility model discloses a drum brake's brake release mechanism belongs to stopper technical field. The problems that in the prior art, manual brake releasing devices of two groups of brake parts in a drum brake with a single brake releasing rod are not independent, and the manual brake releasing of the drum brake with two brake releasing rods is not simple and convenient are solved. This scheme includes casing and manual link assembly, manual link assembly includes two brake release poles, two equal rotatable wearing to establish on the casing of brake release pole, the upper end of two brake release poles all is connected with the connecting plate, be connected with the handle between two connecting plates, still include two removal reset assembly that all set up in the casing, when turning handle drives two brake release poles and rotates, two brake release poles drive adjacent removal reset assembly respectively and remove, and two removal reset assembly's removal opposite direction. This scheme has simple structure, the easy operation of separating brake and handle detachable, does not influence the advantage of drum brake normal work.

Description

Brake releasing mechanism of drum brake

Technical Field

The utility model belongs to the technical field of the stopper, concretely relates to drum brake's release mechanism.

Background

The brake is one of the important safety parts of an elevator, which enables the motor of the elevator to stop rotating without power supply and the car to be effectively braked, and whether the elevator can run safely is closely related to the working condition of the brake.

In prior art, drum brake generally all is equipped with manual brake release subassembly, in emergency or when needing to overhaul, use manual brake release subassembly to make drum brake release, during the use with single brake release pole structure on the manual brake release subassembly insert the electro-magnet pine floodgate hole, pull the handle and make single brake release pole structure promote the iron core on both sides, thereby realize the brake release, but, when the problem of brake release pole produces the card and hinders, it all can't normally reset to probably make the iron core on both sides, can cause two sets of brake subassemblies to lose braking capability simultaneously, there is certain potential safety hazard.

Disclosure of Invention

The utility model aims at having above-mentioned problem to current technique, provided a manual brake release easy and simple to handle and two brake release lever separately set up drum brake's brake release mechanism.

The purpose of the utility model can be realized by the following technical proposal: a drum brake's release mechanism, includes the casing, still includes:

the manual connecting rod assembly comprises two brake release rods, the two brake release rods can rotatably penetrate through the shell, the upper ends of the two brake release rods are connected with connecting plates, and a handle is connected between the two connecting plates;

the two movable resetting components are arranged in the shell;

when the handle is rotated to drive the two brake release rods to rotate, the two brake release rods respectively drive the adjacent mobile reset components to move, and the moving directions of the two mobile reset components are opposite.

In the brake releasing mechanism of the drum brake, the arrangement directions of the two connecting plates are opposite.

In the brake release mechanism of a drum brake, the brake release rod comprises a rotating part, and the lower end of the rotating part is connected with an extrusion flat block for extruding the movable resetting component.

In foretell drum brake's brake release mechanism, two all seted up first spout on the connecting plate, every the equal sliding connection of first spout has first support column, be equipped with on the handle with two first support column matched with through-hole, the one end of first support column is inserted in the through-hole that corresponds.

In the brake release mechanism of the drum brake, two first support columns are respectively provided with a clamping ring, and the clamping rings are used for preventing the upper parts of the first support columns from penetrating through the first sliding grooves.

In the brake release mechanism of the drum brake, the two connecting plates are connected with second supporting columns, the handle is provided with second sliding grooves matched with the second supporting columns, and the upper ends of the two second supporting columns can slide in the corresponding second sliding grooves.

In the brake releasing mechanism of the drum brake, two of the second support columns are provided with support portions, and each support portion is used for supporting the handle.

In the brake release mechanism of a drum brake, two moving reset assemblies are respectively arranged between the adjacent brake release rod and the adjacent end part of the shell.

In the brake releasing mechanism of the drum brake, the two movable resetting assemblies respectively comprise a plunger arranged at the end part of the shell, one end of each plunger is provided with a mandril, the mandril penetrates through the end part of the shell in a sliding manner, and the mandril is used for driving a brake arm in the drum brake to move.

In the brake releasing mechanism of the drum brake, the end parts of the two ejector rods are detachably connected with ejector rod caps, the shell is provided with a mounting seat, a rib plate is connected between the shell and the mounting seat, and the two ends of the shell are detachably connected with end covers.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses in, through setting up manual link assembly, and adopt the scheme of two brake release levers, drive two brake release levers and rotate when can realizing turning handle, two brake release levers drive adjacent removal reset assembly respectively and remove, and two removal reset assembly's moving direction is opposite to two brake arms that remove reset assembly promoted in the drum brake remove, open the brake release state of both sides. When a single brake release rod is used in the prior art, the problem that brake arms on two sides cannot normally reset due to the fact that the brake release rod is blocked or the brake release rod and a plunger on one side are blocked to cause the plunger on the other side to also cannot normally reset can be solved, and the problem that two groups of brake assemblies simultaneously lose brake capacity due to the fact that the single brake release rod is blocked in the prior art can be solved.

2. Through setting up manual link assembly, can realize that the twist grip makes two brake release levers rotate simultaneously and loosen the floodgate, not only the operation of not only loosening the floodgate is simple and convenient, and operating personnel singlehanded can accomplish the operation of loosing the floodgate moreover.

3. Through connecting handle and first support column in the manual link assembly can dismantle, after manual brake release operation is accomplished, can take the handle away from two first support columns, perhaps take the handle away together with first support column, avoid handle and first support column to install the abnormal rotation that arouses manual link assembly on the brake release pole always, thereby lead to the risk that the normal reset that the state mistake of separating brake was opened or was hindered the plunger leads to unable band-type brake, also can avoid handle and other structures to collide simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a brake release mechanism of a drum brake according to the present invention.

Fig. 2 is a schematic diagram of an internal structure according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a connecting plate according to a first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a second embodiment of a brake release mechanism of a drum brake according to the present invention.

Fig. 5 is a schematic diagram of the internal structure of the second embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a connection plate in the second embodiment of the present invention.

In the figure, 100, the housing; 110. a mounting seat; 120. a rib plate; 130. an end cap; 200. a manual linkage assembly; 210. a brake releasing rod; 211. a rotating part; 212. extruding the flat block; 220. a connecting plate; 221. a first chute; 222. a first support column; 223. a snap ring; 230. a handle; 231. a through hole; 232. a second chute; 300. moving the reset assembly; 310. a plunger; 320. a top rod; 330. a jack rod cap; 400. a second support column; 410. a support portion.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, the present invention relates to a brake releasing mechanism for a drum brake, which includes a housing 100, a manual link assembly 200, and a movable reset assembly 300.

Example one

The manual connecting rod assembly 200 comprises two brake release rods 210, the two brake release rods 210 are rotatably arranged on the shell 100 in a penetrating manner, specifically, the brake release rods 210 are rotatably arranged on the shell 100 in a penetrating manner by using positioning screws, the upper ends of the two brake release rods 210 are connected with connecting plates 220, the arrangement directions of the two connecting plates 220 are opposite, and a handle 230 is connected between the two connecting plates 220; the two moving reset assemblies 300 are arranged in the shell 100, and the two moving reset assemblies 300 are respectively arranged between the adjacent trip levers 210 and the ends of the adjacent shell 100; when the rotating handle 230 drives the two trip bars 210 to rotate, the two trip bars 210 respectively drive the adjacent moving reset components 300 to move, and the moving directions of the two moving reset components 300 are opposite. Through setting up manual link assembly 200, and adopt the scheme of two brake release bars 210, can realize driving two brake release bars 210 and rotating when turning handle 230, two brake release bars 210 drive adjacent removal reset assembly 300 respectively and remove, and the moving direction of two removal reset assembly 300 is opposite, thereby two remove reset assembly 300 and promote the brake arm among the drum brake and remove, open the brake release state of both sides, when can avoiding using single brake release bar among the prior art, because brake release bar takes place the jam and causes that both sides brake arm can't normally reset or brake release bar and the plunger of one side take place the jam and lead to the unable normal problem that resets of plunger of opposite side also, can be in order to avoid leading to two sets of brake assembly to lose the brake ability simultaneously because single brake release bar takes place the jam among the prior art.

Further, the trip rod 210 includes a rotating portion 211, a pressing flat block 212 for pressing the movable reset assembly 300 is connected to a lower end of the rotating portion 211, and the pressing flat block 212 is flat. Through setting up extrusion flat block 212, can rotate certain angle with release bar 210 as required to drive extrusion flat block 212 and extrude adjacent removal reset assembly 300, thereby open the release state.

Further, all seted up first spout 221 on two connecting plates 220, the equal sliding connection of every first spout 221 has first support column 222, be equipped with on the handle 230 with two first support column 222 matched with through-holes 231, the one end of first support column 222 inserts in the corresponding through-hole 231, all be equipped with joint ring 223 on two first support columns 222, joint ring 223 is used for hindering the upper portion of first support column 222 to pass first spout 221. Through the scheme, the handle 230 can be simply detached and connected, after manual brake release is completed, the handle 230 can be taken away from the two first support columns 222, or the handle 230 together with the first support columns 222 is taken away, abnormal rotation or misoperation of the brake release rod 210 caused by the fact that the handle 230 is always mounted on the connecting rod assembly 200 is avoided, and therefore the risk that the brake cannot be clamped due to normal reset of the plunger 310 is prevented, and meanwhile the handle 230 can be prevented from colliding with other structures.

Further, the two movable reset assemblies 300 each include a plunger 310 disposed at an end of the housing 100, one end of each plunger 310 is provided with a push rod 320, the push rods 320 slide through the end of the housing 100, the push rods 320 are used for driving the brake arms of the drum brake to move, and the ends of the two push rods 320 are detachably connected with push rod caps 330. The removable top rod cap 330 prevents the end of the top rod 320 from being worn, and facilitates the replacement of the top rod cap 330 when the top rod cap 330 is worn seriously.

Further, both ends of the housing 100 can be detachably connected with end caps 130, the housing 100 is provided with a mounting seat 110, and a rib plate 120 is connected between the housing 100 and the mounting seat 110.

The utility model relates to a drum brake's brake release mechanism's theory of operation as follows:

firstly, bolts are used to penetrate through the mounting base 110, and the brake releasing mechanism is mounted on the corresponding position of the drum brake, so that the push rods 320 in the two mobile reset assemblies 300 can normally drive the brake arms in the drum brake to move, and the brake releasing state is opened.

When the brake release state needs to be manually opened, the lower ends of the first support columns 222 are placed into the first sliding grooves 221 on the corresponding connecting plates 220, the handles 230 are installed on the two first support columns 222, the handles 230 are rotated to drive the two brake release rods 210 to rotate, the extrusion flat blocks 212 of the two brake release rods 210 respectively extrude the adjacent plungers 310, the plungers 310 drive the adjacent push rods 320 to move, and the push rods 320 drive the adjacent brake arms in the drum brake to rotate, so that the brake release state is opened. Because the flat extrusion flat block 212 is flat, two relative position relations exist between the extrusion flat block 212 and the adjacent plunger 310, one is that the extrusion flat block 212 is in contact with the adjacent plunger 310 and extrudes each other, and the other is that the extrusion flat block 212 is in contact with the adjacent plunger 310 but does not extrude each other, and only after the extrusion flat block 212 rotates under the external force, the extrusion flat block 212 can extrude the adjacent plunger 310.

After the brake releasing state is completed, the rotating handle 230 is reset, and the plunger 310 and the push rod 320 are reset by the extrusion of the two movable resetting components 300 after the external force is lost. After the manual brake releasing operation is completed, the handle 230 can be taken away from the two first support columns 222, so that the abnormal rotation or misoperation of the brake releasing rod 210 caused by the fact that the handle 230 is always installed on the first support columns 222 is avoided, the risk that the brake cannot be released due to the normal reset of the plunger 310 is prevented, and meanwhile, the handle 230 can be prevented from colliding with other structures.

In a specific using process, the first supporting column 222 can be inserted into the through hole 231 of the handle 230, the lower end of the supporting column 222 is placed into the first sliding groove 221 on the corresponding connecting plate 220, then the handle 230 is rotated by one hand to open the brake release state, and after the manual brake release operation is completed, the handle 230 and the first supporting column 222 are taken away from the brake release rod 210.

Example two

As shown in fig. 1 to 6, the present embodiment is different from the first embodiment in that the connection relationship between the handle 230 and the connection plate 220 is changed.

Specifically, all be connected with second support column 400 on two connecting plates 220, be equipped with on handle 230 with second support column 400 matched with second spout 232, the upper end of two second support columns 400 all can slide in the second spout 232 that corresponds, all is equipped with supporting part 410 on two second support columns 400, every supporting part 410 all is used for supporting handle 230. During the installation, people need install handle 230 on two connecting plates 220, specifically, need insert two second support columns 400 to corresponding second spout 232 in, after manual brake release operation was accomplished, alright take away handle 230 from two second support columns 400.

It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, the descriptions of the embodiments as "first," "second," "a," etc. in this disclosure are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of the indicated features is indicative. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Claims

1. A drum brake's release mechanism, includes the casing, its characterized in that still includes:

the two movable resetting components are arranged in the shell;

2. The brake release mechanism for a drum brake according to claim 1, wherein said two connecting plates are arranged in opposite directions.

3. The drum brake release mechanism according to claim 1, wherein said release lever includes a rotating portion having a lower end to which a pressing flat for pressing said moving return member is connected.

4. The brake release mechanism of a drum brake according to claim 1, wherein each of the two connecting plates has a first sliding slot, each of the first sliding slots has a first support column slidably connected thereto, the handle has a through hole matching with the two first support columns, and one end of each of the first support columns is inserted into the corresponding through hole.

5. The brake release mechanism of a drum brake according to claim 4, wherein the two first support columns are each provided with a snap ring for obstructing the upper portion of the first support column from passing through the first sliding groove.

6. The brake release mechanism of a drum brake according to claim 1, wherein a second support column is connected to each of the two connecting plates, a second sliding groove matched with the second support column is provided on the handle, and upper ends of the two second support columns can slide in the corresponding second sliding grooves.

7. The brake release mechanism for a drum brake according to claim 6, wherein two of said second support posts are provided with a support portion, each support portion being adapted to support said handle.

8. A brake release mechanism for a drum brake according to claim 3, wherein two said moving return assemblies are respectively disposed between adjacent said release levers and adjacent ends of said housing.

9. The brake release mechanism of a drum brake according to claim 1, wherein both of said moving reset assemblies comprise a plunger disposed at an end of said housing, said plunger having a ram at one end thereof, said ram sliding through an end of said housing, said ram being adapted to move a brake arm of said drum brake.

10. The brake release mechanism of a drum brake according to claim 9, wherein a ram cap is detachably connected to each end of the two rams, the housing is provided with a mounting seat, a rib is connected between the housing and the mounting seat, and end caps are detachably connected to each end of the housing.