CN218480087U

CN218480087U - Motor brake protector for vertical shaft hoister

Info

Publication number: CN218480087U
Application number: CN202222429338.1U
Authority: CN
Inventors: 周作春
Original assignee: Hunan Coal Industry Group Xiangyong Mining Co ltd
Current assignee: Hunan Coal Industry Group Xiangyong Mining Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-02-14
Anticipated expiration: 2032-09-14

Abstract

The utility model discloses a vertical shaft lifting machine motor brake protection device of lifting machine motor brake protection technical field, including brake wheel and brake shoe, still including magnet and the normally closed magnetic switch who is used for triggering the protection action, the lower extreme of brake wheel is equipped with the brake shoe, install the fixed part on the brake shoe, the fixed part is kept away from the one end of brake shoe installation arm and is installed the rotating part, normally closed magnetic switch and fixed part fixed connection, magnet and rotating part fixed connection, this device can guarantee when the lifting machine moves, if the motor brake shoe if the band-type brake, will trigger immediately the protection parking, motor brake shoe brake does not open, the unable operation of lifting machine, effectively protect motor shaft coupling's elasticity stick round pin reliably.

Description

Motor brake protector for vertical shaft hoister

Technical Field

The utility model relates to a lifting machine motor stopper protection technical field specifically is vertical shaft lifting machine motor stopper protection device.

Background

The motor brake of the vertical shaft elevator is arranged at the connecting part of the main motor and the reduction gearbox, the oil cylinder of the motor brake is connected with the oil pipe of the hydraulic brake system of the elevator to provide pressure oil, the oil cylinder is closed when the elevator brakes, the brake shoe is jacked upwards by the brake spring of the motor brake, the brake shoe is braked on the outer connecting sleeve (brake wheel) of the elastic rod pin coupling, and the motor shaft is braked to absorb the inertia of the motor rotor and protect the reduction gearbox.

The motor brake has the advantages that the brake cannot be opened due to the factors that an oil cylinder sealing piece of the motor brake is easy to deform and damage, an oil drainage hole is blocked, a push rod locking nut is loosened and the like, when the brake is not opened and a lifter runs, high temperature is generated due to high-speed friction between the brake and a brake wheel, so that the elastic nylon rod pin of the coupler is dissolved in a pin hole and is difficult to remove, the processing time is not less than eight hours each time, the yield of raw coal is directly influenced, and the economic benefit is influenced.

Based on this, the utility model designs a vertical shaft lifting machine motor stopper protection device to solve above-mentioned problem.

Disclosure of Invention

An object of the utility model is to provide a vertical shaft elevator motor brake protection device to the problem of having proposed the prior art shortcoming in solving above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the motor brake protection device for the vertical shaft hoisting machine comprises a brake wheel, a brake shoe, a magnet for triggering protection action and a normally closed magnetic switch, wherein the brake shoe is arranged at the lower end of the brake wheel, a fixed part is arranged on the brake shoe, a rotating part is arranged at one end, far away from a brake shoe installation arm, of the fixed part, the normally closed magnetic switch is fixedly connected with the fixed part, and the magnet is fixedly connected with the rotating part;

as a further scheme of the present invention, the fixed part is a mounting bracket, the rotating part is a contact wheel, the mounting bracket is fixedly connected with the brake shoe, and the contact wheel is rotatably mounted at one end of the mounting bracket away from the brake shoe mounting arm;

as a further proposal of the utility model, the contact wheel adopts a rubber guide wheel;

as a further proposal of the utility model, the magnet is fixedly arranged inside the contact wheel through a fixing ring;

as a further scheme of the utility model, the normally closed magnetic switch is fixedly arranged at the upper end of the mounting bracket and is positioned above the central shaft of the contact wheel;

as a further scheme of the utility model, it has conducting strip and temperature detect switch to go back fixed mounting on the brake shoe, and when the brake wheel was held tightly to the brake shoe, the conducting strip contacted with the brake wheel.

Compared with the prior art, the beneficial effects of the utility model are that:

through at brake shoe installation arm side installation installing support, then at the one end installation contact wheel of installing support near the brake wheel, installation magnet in the middle of the contact wheel, installation normal close magnetic switch on the installing support, when the brake shoe did not loosen the brake wheel when lifting machine starts operation, the brake wheel will drive the contact wheel rotation after beginning to rotate, when magnet on the contact wheel met with the normal close magnetic switch on the installing support, will trigger protection circuit, the promotion chance brakes the parking immediately. Meanwhile, an alarm on the operating platform can start to give an alarm, if the brake shoe of the motor brake is braked when the hoister operates, the hoister can stop immediately, the brake shoe of the motor brake is not opened, and the hoister cannot operate, so that the elastic rod pin of the motor coupler is effectively and reliably protected.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a middle brake wheel according to the present invention;

FIG. 3 is a schematic left side view of the brake wheel of the present invention;

fig. 4 is a schematic structural view of the contact wheel of the present invention;

fig. 5 is an electrical schematic diagram of the present invention;

fig. 6 is an electrical schematic of the elevator brake circuit and safety circuit.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a brake wheel; 2. brake shoes; 3. a magnet; 4. a normally closed magnetic switch; 5. mounting a bracket; 6. a contact wheel; 7. a fixing ring; 8. a heat conductive sheet; 9. a temperature control switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the motor brake protection device for the vertical shaft hoist comprises a brake wheel 1, a brake shoe 2, a magnet 3 and a normally closed magnetic switch 4, wherein the magnet 3 and the normally closed magnetic switch 4 are used for triggering protection action, the brake shoe 2 is arranged at the lower end of the brake wheel 1, a fixing part is arranged on the brake shoe 2, a rotating part is arranged at one end, far away from a mounting arm of the brake shoe 2, of the fixing part, the normally closed magnetic switch 4 is fixedly connected with the fixing part, the magnet 3 is fixedly connected with the rotating part, the fixing part is a mounting bracket 5, the rotating part is a contact wheel 6, the mounting bracket 5 is fixedly connected with the brake shoe 2, and the contact wheel 6 is rotatably arranged at one end, far away from the mounting arm of the brake shoe 2, of the mounting bracket 5;

when the elevator runs, the oil pressure of a hydraulic braking system rises, a brake shoe 2 descends to be separated from contact with a brake wheel, and meanwhile, a contact wheel 6 is driven to be separated from contact with the brake wheel 1, and when an oil cylinder driving the brake shoe 2 to act breaks down, the brake shoe 2 does not loosen the brake wheel 1 when the elevator runs in a starting mode, the same contact wheel 6 can be attached to the surface of the brake wheel 1, the brake wheel 1 can drive the contact wheel 6 to rotate after rotating, when a magnet 3 on the contact wheel 6 meets a normally closed magnetic switch 4 on a mounting support 5, a normally closed point Kc of the normally closed magnetic switch 4 is disconnected, an installed direct-current 24V intermediate relay K is powered off, a normally open point K2 of the relay K is disconnected, an oil pump contactor coil is powered off, a normally open point KM of the relay coil is disconnected, a safety loop relay coil AC is powered off, a main motor is powered off immediately, the elevator is braked and stopped, and meanwhile, a normally closed point K1 of the operation platform alarm is switched on, so that a driver of the elevator is prompted that the brake is not opened, and when the elevator runs, a brake shoe 2 of the motor is braked and the elevator, the brake is not opened, the brake, and the brake shoe 2 of the elevator cannot run.

In this embodiment, contact wheel 6 adopts the rubber guide wheel, and the rubber guide wheel surface has great frictional force, can be driven by brake wheel 1 when ensureing that contact wheel 6 contacts with brake wheel 1.

In this embodiment, the magnet 3 is fixedly mounted inside the contact wheel 6 through the fixing ring 7, in order to prevent the contact wheel 6 from deviating and falling off the magnet 3 during the rotation process.

In this embodiment, 4 fixed mounting of normally closed magnetic switch is in the upper end of installing support 5, normally closed magnetic switch 4 is located the top of contact wheel 6 center pin, when contact wheel 6 breaks away from the contact with brake wheel 1, because 6 internally mounted of contact wheel has magnet 3, the position of installation magnet 3 can rotate to the below in the contact wheel 6, install normally closed magnetic switch 4 in the top of contact wheel 6 center pin, just can make the position of normally closed magnetic switch 4 and magnet 3 stagger, prevent the condition of wrong report.

In this embodiment, a heat conducting strip 8 and a temperature control switch 9 are further fixedly mounted on the brake shoe 2, when the brake shoe 2 tightly holds the brake wheel 1, the heat conducting strip 8 is in contact with the brake wheel 1, when the brake shoe 2 is not loosened and the elevator runs, the heat conducting strip 8 tightly holds the brake wheel 1 to detect the running temperature of the brake wheel, when the temperature rise reaches 50 ℃, a normally-closed point of the temperature control switch is disconnected, an electric component acts as in the first embodiment, and a main motor immediately stops running, so that double protection is realized.

Claims

1. Vertical shaft lifting machine motor brake protection device, including brake wheel (1) and brake shoe (2), its characterized in that: still including magnet (3) and normally closed magnetic switch (4) that are used for triggering the protection action, the lower extreme of brake wheel (1) is equipped with brake shoe (2), install the fixed part on brake shoe (2), the fixed part is kept away from the one end of brake shoe (2) installation arm and is installed the rotating part, normally closed magnetic switch (4) and fixed part fixed connection, magnet (3) and rotating part fixed connection.

2. A vertical hoist motor brake protection device as defined in claim 1, characterized by: the fixed part is installing support (5), the rotating part is contact wheel (6), installing support (5) and brake shoe (2) fixed connection, contact wheel (6) rotate to be installed and keep away from the one end of brake shoe (2) installation arm in installing support (5).

3. A vertical hoist motor brake protection device as defined in claim 2, characterized in that: the contact wheel (6) adopts a rubber guide wheel.

4. A vertical hoist motor brake protection device as defined in claim 2, characterized in that: and the magnet (3) is fixedly arranged in the contact wheel (6) through a fixing ring (7).

5. A vertical hoist motor brake protection device as defined in claim 2, characterized in that: the normally closed magnetic switch (4) is fixedly installed at the upper end of the mounting bracket (5), and the normally closed magnetic switch (4) is located above the central shaft of the contact wheel (6).

6. A vertical hoist motor brake protection device as defined in claim 1, characterized by: the brake shoe (2) is further fixedly provided with a heat conducting sheet (8) and a temperature control switch (9), and when the brake shoe (2) tightly holds the brake wheel (1), the heat conducting sheet (8) is in contact with the brake wheel (1).