CN212050323U

CN212050323U - Electric hoist

Info

Publication number: CN212050323U
Application number: CN202020219886.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhangzhou Longwen District Renxin Industry Design Co ltd
Current assignee: Zhangzhou Longwen District Renxin Industry Design Co ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-12-01
Anticipated expiration: 2030-02-27

Abstract

The utility model relates to an electric hoist, which comprises a conical rotor brake motor, a winding drum, a reduction gearbox, a controller, a lifting hook and an overload limiter; a rotating shaft of the conical rotor braking motor is provided with a circular turntable which is coaxially arranged with the conical rotor braking motor and is fixedly connected with the conical rotor braking motor, and one side surface of the turntable is provided with a braking sleeve; the brake kit comprises a guide post, a centrifugal block, a brake layer and a spring; the guide post is fixedly connected with the turntable; the centrifugal block is arranged on the far shaft side of the turntable and is connected with the guide post in a sliding manner through the sliding groove; the brake layer is arranged at the top end of the centrifugal block, and a stroke gap is reserved between the brake layer and the inner wall of the shell of the conical rotor brake motor; one end of the spring is connected with the rotary table, the other end of the spring is connected with the centrifugal block, and the centrifugal block is pulled to the direction of the circle center of the rotary table. The utility model discloses the overspeed decline when can prevent electric block hoist and mount goods.

Description

Electric hoist

Technical Field

The utility model relates to an electric block technical field especially relates to electric block.

Background

The electric hoist is widely used for hoisting goods and mainly comprises a conical rotor brake motor, a winding drum, a reduction gearbox, a controller and a lifting hook. The existing electric hoist is generally provided with an overload limiter, when hoisted goods are overloaded, an alarm can be given, after a period of use, the overload limiter can be out of order and can not give an alarm when being overloaded, when the weight of the hoisted goods exceeds the braking capacity of a conical rotor braking motor, the hoisted goods can be lowered at an overspeed, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides an electric block that descends when can prevent to hoist and mount goods hypervelocity.

The utility model discloses a realize through following technical scheme: the electric hoist comprises a conical rotor brake motor, a winding drum, a reduction gearbox, a controller, a lifting hook and an overload limiter; the controller is arranged outside the conical rotor braking motor, the lifting hook is connected with the winding drum through a steel wire rope, and the overload limiter is arranged on the steel wire rope; the conical rotor brake motor and the overload limiter are electrically connected with the controller; a rotating shaft of the conical rotor braking motor is provided with a circular turntable which is coaxially arranged with the conical rotor braking motor and is fixedly connected with the conical rotor braking motor, and one side surface of the turntable is provided with a braking sleeve; the brake kit comprises a guide post, a centrifugal block, a brake layer and a spring; the guide post is fixedly connected with the turntable; the centrifugal block is arranged on the far shaft side of the turntable and is connected with the guide post in a sliding manner through the sliding groove; the brake layer is arranged at the top end of the centrifugal block, and a stroke gap is reserved between the brake layer and the inner wall of the shell of the conical rotor brake motor; one end of the spring is connected with the rotary table, the other end of the spring is connected with the centrifugal block, and the centrifugal block is pulled to the direction of the circle center of the rotary table.

Furthermore, the guide post and the spout of braking external member all are equipped with two correspondingly. The guiding effect can be enhanced.

Furthermore, the braking external member is equipped with the multiunit to along circumference evenly distributed on the carousel. The braking effect can be enhanced.

Further, the braking external member is provided with 3 groups. 3 sets of braking kits are arranged to achieve a good braking effect.

Further, the device also comprises an operating button, and the operating button is electrically connected with the controller. Used for directly controlling the electric hoist.

The utility model has the advantages that: the rotating shaft of the conical rotor braking motor is provided with the rotating disc, and the rotating disc is provided with the guide post, the centrifugal block, the braking layer and the spring, so that the braking effect can be achieved when the lifting hook descends in an overspeed manner and the rotating shaft of the conical rotor braking motor exceeds a limited rotating speed, the rotating speed is prevented from being further improved, the lifting hook is prevented from descending in an overspeed manner, and the safety of goods and personnel is ensured; the whole device has simple structure.

Drawings

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

Fig. 2 is a sectional view a-a of fig. 1.

In the figure: the braking device comprises a conical rotor braking motor 1, a winding drum 2, a reduction gearbox 3, a controller 4, a lifting hook 5, an overload limiter 6, a steel wire rope 7, a rotating shaft 8, a rotary table 9, a guide post 10, a centrifugal block 11, a braking layer 12, a spring 13, a sliding groove 14, a shell 15 and an operating button 16.

Detailed Description

As shown in fig. 1-2, in the embodiment of the present invention, the electric hoist includes a conical rotor braking motor 1, a winding drum 2, a reduction gearbox 3, a controller 4, a hook 5 and an overload limiter 6; the conical rotor braking motor 1 is arranged at one end of the winding drum 2, the reduction gearbox 3 is arranged at the other end of the winding drum 2, the controller 4 is arranged outside the conical rotor braking motor 1, the lifting hook 5 is connected with the winding drum 2 through a steel wire rope 7, and the overload limiter 6 is arranged on the steel wire rope 7; the conical rotor brake motor 1 and the overload limiter 6 are electrically connected with the controller 4; a rotating shaft 8 of the conical rotor braking motor 1 is provided with a circular turntable 9 which is coaxially arranged with the conical rotor braking motor and fixedly connected with the conical rotor braking motor, and a braking sleeve member is arranged on one side surface of the turntable 9; the brake kit comprises a guide post 10, a centrifugal block 11, a brake layer 12 and a spring 13; the guide post 10 is fixedly connected with the turntable 9; the centrifugal block 11 is arranged on the far shaft side of the turntable 9 and is connected with the guide column 10 in a sliding manner through a sliding chute 14; the brake layer 12 is arranged at the top end of the centrifugal block 11, and a stroke gap is reserved between the brake layer 12 and the inner wall of the shell 15 of the conical rotor brake motor 1; one end of the spring 13 is connected with the rotary table 9, the other end of the spring is connected with the centrifugal block 11, and the centrifugal block 11 is pulled to the direction of the circle center of the rotary table 9.

In this embodiment, in order to enhance the guiding effect, two guiding columns 10 and two sliding grooves 14 of the braking assembly are correspondingly provided.

In this embodiment, reach better braking effect, the braking external member is equipped with 3 groups to along circumference evenly distributed on carousel 9.

In this embodiment, the device further comprises an operation button 16, and the operation button 16 is electrically connected with the controller 4. Used for directly controlling the electric hoist.

The working principle is as follows: when the lifting hook 5 for hoisting goods by the electric hoist descends normally, the winding drum 2 rotates normally, the rotating speed of the winding drum 2 and the rotating shaft 8 of the conical rotor brake motor 1 is lower, the rotating speed of the rotary table 9 is also lower, the centrifugal block 11 is folded under the action of the spring 13, a stroke gap is reserved between the brake layer 12 arranged on the centrifugal block 11 and the inner wall of the shell 15 of the conical rotor brake motor 1 at the moment, and the brake layer 12 does not play a braking role; when the lifting hook 5 descends in an overspeed manner to drive the rotating shaft 8 of the conical rotor brake motor 1 to rotate at a high speed, and the rotating speed reaches a limited rotating speed, the centrifugal block 11 overcomes the pulling force of the spring 13 and throws away outwards under the action of centrifugal force, the brake layer 12 is tightly attached to the inner wall of the shell 15 of the conical rotor brake motor 1 to generate friction force, the rotating disc 9 is prevented from rotating, the rotating speed is reduced, the rotating speed of the conical rotor brake motor 1 is reduced, the descending speed of the lifting hook 5 is reduced, the lifting hook 5 and goods are ensured not to descend in an overspeed manner, and the safety of goods and personnel is.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention.

Claims

1. The electric hoist comprises a conical rotor brake motor, a winding drum, a reduction gearbox, a controller, a lifting hook and an overload limiter; the controller is arranged outside the conical rotor braking motor, the lifting hook is connected with the winding drum through a steel wire rope, and the overload limiter is arranged on the steel wire rope; the conical rotor brake motor and the overload limiter are electrically connected with the controller; the method is characterized in that: a rotating shaft of the conical rotor braking motor is provided with a circular turntable which is coaxially arranged with the conical rotor braking motor and is fixedly connected with the conical rotor braking motor, and one side surface of the turntable is provided with a braking sleeve; the brake kit comprises a guide post, a centrifugal block, a brake layer and a spring; the guide post is fixedly connected with the turntable; the centrifugal block is arranged on the far shaft side of the turntable and is connected with the guide post in a sliding manner through the sliding groove; the brake layer is arranged at the top end of the centrifugal block, and a stroke gap is reserved between the brake layer and the inner wall of the shell of the conical rotor brake motor; one end of the spring is connected with the rotary table, the other end of the spring is connected with the centrifugal block, and the centrifugal block is pulled to the direction of the circle center of the rotary table.

2. The electric hoist according to claim 1, characterized in that: the guide post and the spout of braking external member all correspond and are equipped with two.

3. The electric hoist according to claim 1, characterized in that: the braking external member is equipped with the multiunit to along circumference evenly distributed on the carousel.

4. An electric block according to claim 1 or 2, characterized in that: the braking external member is provided with 3 groups.

5. The electric hoist according to claim 1, characterized in that: the device also comprises an operating button which is electrically connected with the controller.