CN211594667U

CN211594667U - Drum brake device that declutches

Info

Publication number: CN211594667U
Application number: CN201922448293.0U
Authority: CN
Inventors: 杨良才; 梁昌勇
Original assignee: Hepu Power Co ltd
Current assignee: Hepu Power Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-29
Anticipated expiration: 2029-12-30

Abstract

The utility model provides a drum brake device that declutches, its characterized in that includes the support on the magnetic device, the tip leading wheel, the middle part leading wheel, the cable, the main stay cable, the brake release lever subassembly, the tip leading wheel is located the outside of the magnetic device drive end of the brake arm of stopper, the cable both ends are walked around respectively behind two middle part leading wheels with opposite direction respectively again and are connected respectively in the magnetic device drive end department of the brake arm on stopper both sides behind the both ends leading wheel again, the middle part of cable is connected with the wherein one end of main stay cable, the other end of main stay cable is connected and is pulled by the brake release lever subassembly with the brake release lever subassembly. Compared with the prior art, the utility model, have the emergence of avoiding stopper release device to take place the jamming and lead to the incident, guarantee elevator braking system's fail safe nature, the life of extension stopper promotes the advantage of the convenience that the elevator was maintained.

Description

Drum brake device that declutches

Technical Field

The utility model relates to a motor technology.

Background

The main types of the elevator traction machine brake include a drum type, a block type and a disc type, and the drum type brake is generally applied to the elevator traction machine due to simple structure and low cost, and is particularly applied to a goods elevator and a considerable number of passenger elevators. Most of the drum brakes are provided with only one set of manual brake releasing device, such as the drum brake in the prior art disclosed in fig. 5 and 6, and the structure of the drum brake mainly comprises a brake releasing rod 12, a rotating handle shaft 13, a top rod 14, an end cover 15, a coil 16, a shell 17, a movable core 18 and the like. The principle of brake release is as follows: the brake releasing rod 12 drives the rotating handle shaft 13 to rotate, the flat surface of one end of the rotating handle shaft 13 is changed from a vertical state to a horizontal state, the two movable cores 18 move outwards, and the brake shoe is separated from the brake wheel through the ejector rod 14 and the brake arm, so that the purpose of brake releasing is realized, and the prior art has the following defects in actual use: when the brake releasing rod 12 releases the brake, the side surface of the flat end of the rotating handle shaft 13 will rub the end surface of the movable core 16, because the movable core 18 is made of pure iron, after long-term use, the end surface of the movable core 18 will produce pit deformation under the extrusion action of the flat end. When the brake release rod 12 is inclined under the action of gravity, the flat end of the rotating handle shaft 13 is also inclined and sunk into the deformed pit to be in a clamping state. When the brake needs to brake, the flat end of the rotating handle shaft 13 is inclined and blocked, so that the movable core 18 cannot be reset to the middle part of the machine shell, and the brake wheel cannot be effectively braked by the brake, thereby causing the safety accident of the elevator. And above prior art's stopper release device is because of setting up in the casing, and it is very inconvenient to change spare part, consequently also makes the degree of difficulty of elevator maintenance increase.

Disclosure of Invention

The utility model aims at providing an avoid stopper release device to take place the jamming and lead to the emergence of incident, guarantee elevator braking system's fail safe nature, the life of extension stopper promotes the drum brake release device of the convenience that the elevator was maintained.

The utility model discloses a realize like this: including setting up the support on the magnetic device of stopper, the tip leading wheel that the surface that sets up at the support both ends has the wire casing, set up the middle part leading wheel that has the wire casing at the surface at support middle part side by side, the cable, the main cable, the brake release lever subassembly of pulling main cable, the tip leading wheel is located the outside of the magnetic device drive end of the brake arm of stopper, the cable both ends are walked around respectively behind two middle part leading wheels with opposite direction respectively behind the rethread both ends leading wheel respectively and are connected respectively at the magnetic device drive end department of the brake arm on both sides, the middle part of cable is connected with one of them end of main cable, the other end of main cable is connected with the brake release lever subassembly and is pulled by the brake release lever subassembly.

When the magnetic device of the brake is powered off, the brake is in a contracting brake braking state, at the moment, when the brake needs to be released, the force is applied to the brake releasing rod assembly by hands, the main cable is tensioned, the middle part of the cable is pulled, the two ends of the cable simultaneously pull the brake arms, and the brake arms move towards the outer side, so that the brake is released. When the brake releasing state is to be maintained, force needs to be continuously applied to the brake releasing rod assembly by hand or the clamping piece needs to be used for overcoming the spring force of a closing spring on the brake arm so as to realize continuous brake releasing. Because all components are exposed, the maintenance is convenient.

Compared with the application technology, the utility model, have and avoid stopper release brake device to take place the jamming and lead to the emergence of incident, guarantee elevator braking system's fail safe nature, the life of extension stopper promotes the advantage of the convenience that the elevator was maintained.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a side schematic view of FIG. 1;

FIG. 3 is a perspective view of a bracket portion;

FIG. 4 is a schematic structural view of the trip lever assembly;

FIG. 5 is a schematic diagram of a prior art structure;

fig. 6 is a sectional view a-a of fig. 5.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings and examples:

as shown in the drawing, the utility model discloses a realize like this, including setting up support 2 on the magnetizer 1 of stopper an, the surface that sets up at support 2 both ends has the tip leading wheel 4 of wire guide groove 3, set up the middle part leading wheel 6 that the surface at support 2 middle part has wire guide groove 5 side by side, cable 7, main cable 8, the brake release lever subassembly b of pulling main cable 8, tip leading wheel 4 is located the outside of the magnetizer drive end 10 of brake arm 9 of stopper a, cable 7 both ends are walked around respectively behind two middle part leading wheels 6 respectively with opposite direction again and are connected respectively in the magnetizer drive end 10 department of brake arm 9 on stopper a both sides behind the both ends leading wheel 4, middle part A and the one of them one end of main cable 8 of cable 7 are connected, main cable 8's the other end is connected with brake release lever subassembly b and is pulled by brake release lever subassembly b.

Brake release lever subassembly b is including fixing the fixing base 11 on the wall, rotate the leading wheel 12 of setting on fixing base 11, it has the rope sheave 14 that drives the pivoted by pull rod 13 to rotate to set up on fixing base 1, main cable 8 is leaned on behind leading wheel 12 on the 14 surface of rope sheave, the end fixing of main cable 8 is on rope sheave 14, like this, pull rod 13 is pulled the messenger from top to bottom, make rope sheave 14 rotate, rope sheave 14 drives main cable 8 and winds and pull rope sheave 14 and come the pulling main cable 8.

Claims

1. The utility model provides a drum brake device that declutches, its characterized in that is including setting up the support on the magnetic means of stopper, the tip leading wheel that the surface that sets up at the support both ends has the wire guide groove, set up the middle part leading wheel that has the wire guide groove at the surface at support middle part side by side, the cable, the main cable, the declutch lever subassembly of pulling main cable, the tip leading wheel is located the outside of the magnetic means drive end of the brake arm of stopper, the cable both ends are walked around respectively behind two middle part leading wheels with opposite direction respectively the rethread and are connected respectively at the magnetic means drive end department of the brake arm on stopper both sides behind the both ends leading wheel, the middle part of cable is connected with one of them end of main cable, the other end of main cable is connected with the declutch lever subassembly and.

2. The drum brake release device of claim 1, wherein the brake release lever assembly comprises a fixed base fixed to a wall, a guide wheel rotatably mounted to the fixed base, a pulley rotatably mounted to the fixed base and having a pull pulley rotatably driven by a pull rod, the main cable passing around the guide wheel and abutting against an outer surface of the pulley, and an end of the main cable being fixed to the pulley.