CN219689199U - Emergency braking device for manual hoist - Google Patents

Abstract

The utility model relates to the technical field of hand hoists and provides an emergency braking device for the hand hoists, which comprises a shell, wherein transmission gears are rotationally connected to two sides of the outer part of the shell, slots are formed in the outer part of the transmission gears in a circumferential array, a protective cover is fixedly connected to the outer part of the shell, braking rods are slidingly connected to two sides of the inner part of the protective cover, a limiting plate is fixedly connected to one side, close to the transmission gears, of the outer part of each braking rod, springs are arranged between the limiting plate and the inner wall of the protective cover, one ends, far away from the limiting plate, of each braking rod are fixedly connected with a fixing plate, and through slots are formed in the fixing plate. Through the technical scheme, the problem that the manual hoist in the prior art does not comprise an emergency braking function, and objects which are easy to transmit fall rapidly when the manual hoist fails or the operation of a user is wrong, so that personal safety of staff is threatened, and the use risk of the manual hoist in the technology is increased is solved.

Description

Emergency braking device for manual hoist

Technical Field

The utility model relates to the technical field of manual hoist, in particular to an emergency braking device of a manual hoist.

Background

The hand hoist is also called a immortal hoist, a chain hoist, a jin of chain hoist, is a simple-to-use and portable hand hoisting machine, and is also called a chain hoist or a chain hoist.

Chinese patent discloses a fast-assembling structure (grant bulletin number CN 217972362U) for manual hoist, and this patent technique includes the i-steel, the intermediate lower part of i-steel has set up the lock sleeve, the below of lock sleeve has set up manual hoist, the upper end of manual hoist is provided with the peg, the hasp groove has been seted up to the bottom of peg, the conical head has been set up on the top of peg, the centre of lock sleeve has set up the locking axle, the mounting hole has been seted up in the centre of locking axle, the lower extreme of mounting hole has set up a plurality of tapered ends, the outside of tapered end has set up the spring spacing, the outside of spring spacing has set up the spring tongue, the outer end of spring tongue has set up the square toggle block, the inboard swing joint of square toggle block pulls the inserted sheet, pull inserted sheet fixed connection is in the bottom of lock sleeve. Through above-mentioned technical scheme, solved among the prior art hand block installation difficulty and the easy problem that drops of lifting hook connection.

However, the manual hoist in the technology does not include an emergency braking function, and when the manual hoist fails or a user fails to operate, the conveyed object is easily dropped rapidly, so that the personal safety of the worker is threatened, and the use risk of the manual hoist in the technology is increased. Accordingly, a person skilled in the art provides an emergency brake device for a manual hoist to solve the above-mentioned problems in the related art.

Disclosure of Invention

The utility model provides an emergency braking device for a manual hoist, which solves the problems that the manual hoist in the related art does not comprise an emergency braking function, and when the manual hoist fails or a user fails to operate, the transmitted object is easy to drop down rapidly, so that the personal safety of the worker is threatened, and the use risk of the manual hoist in the technology is increased.

The technical scheme of the utility model is as follows: the utility model provides an emergency braking device of hand hoist, includes the casing, the outside both sides of casing rotate and are connected with drive gear, drive gear's outside is circumference array and has the slot, the outside fixedly connected with protection casing of casing, the inside both sides sliding connection of protection casing has the brake lever, the outside of brake lever is close to drive gear's one side fixedly connected with limiting plate, the outside of brake lever just is located between limiting plate and the inner wall of protection casing and is equipped with the spring, two the one end fixedly connected with fixed plate that the limiting plate was kept away from to the brake lever, logical groove has been seted up to the inside of fixed plate, the outside below fixedly connected with electric telescopic handle of protection casing, electric telescopic handle's output extends to logical inslot and with logical groove swing joint;

preferably, a rotation speed sensor is arranged outside one of the transmission gears, and the two transmission gears are connected in a meshed manner;

preferably, a chain is arranged in the shell extending to the bottom, and the transmission gear is used for driving the chain in the shell;

preferably, a controller is arranged above the outer part of the protective cover, and the rotating speed sensor is electrically connected with the electric telescopic rod through the controller;

preferably, the top of the shell is fixedly connected with a fixed block, the top of the fixed block is rotationally connected with a rotating block, and the top of the rotating block is fixedly connected with a hook;

preferably, limiting blocks are fixedly connected to two sides of the inner wall of the protective cover, the limiting plates are in sliding connection with the limiting blocks, and the brake rod is made of an aluminum alloy material.

The working principle and the beneficial effects of the utility model are as follows: when the manual hoist is in normal use, the rotating speed is normal, the output end of the electric telescopic rod is positioned in the through groove, the spring is tightly pressed through the limiting plate, when the manual hoist breaks down, the chain drives the transmission gear to rotate rapidly and exceeds the rotating speed value preset by the rotating speed sensor, the rotating speed sensor can detect the rotating speed of the transmission gear during the process, then the output end of the electric telescopic rod is controlled to shrink through the controller, so that the spring is pulled out from the through groove, the brake rod ejects the brake rod into the slot outside the transmission gear through the rebound force, the brake rod can lock the transmission gear through the slot, the rotation of the brake rod is stopped, the emergency braking effect on the transmission gear can be achieved, the braking effect of the manual hoist on the transmission gear when the manual hoist breaks down or the operation error of a user is effectively guaranteed, the object hung in the air is prevented from falling rapidly, and the personal safety of a worker is threatened.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a schematic diagram of a front view structure of the present utility model;

FIG. 3 is a schematic side view of the present utility model;

FIG. 4 is a perspective view of a fixing plate according to the present utility model;

fig. 5 is a schematic structural view of a transmission gear in the present utility model.

In the figure: 1. a housing; 2. a transmission gear; 3. a rotation speed sensor; 4. a slot; 5. a protective cover; 6. a controller; 7. a brake lever; 8. a limiting plate; 9. a spring; 10. a fixing plate; 11. a through groove; 12. an electric telescopic rod; 13. a hook; 14. a chain; 15. a fixed block; 16. and rotating the block.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1-5, this embodiment provides an emergency braking device for a manual hoist, which comprises a housing 1, the outside both sides of casing 1 are rotated and are connected with drive gear 2, the outside of drive gear 2 is circumference array and has slot 4, the outside fixedly connected with protection casing 5 of casing 1, the inside both sides sliding connection of protection casing 5 has brake lever 7, one side fixedly connected with limiting plate 8 that the outside of brake lever 7 is close to drive gear 2, the outside of brake lever 7 just is located between limiting plate 8 and the inner wall of protection casing 5 and is equipped with spring 9, one end fixedly connected with fixed plate 10 that two brake levers 7 kept away from limiting plate 8, logical groove 11 has been seted up to the inside of fixed plate 10, the outside below fixedly connected with electric telescopic handle 12 of protection casing 5, the output of electric telescopic handle 12 extends to the inside of logical groove 11 and with logical groove 11 swing joint.

In this embodiment, when the manual hoist is in normal use, the rotational speed is normal, the output of electric telescopic link 12 is in the inside of logical groove 11, and compress tightly spring 9 through limiting plate 8, when the manual hoist breaks down, the article of transmission drops fast, chain 14 drives drive gear 2 fast rotation, surpass the rotational speed value that rotational speed sensor 3 preset, rotational speed sensor 3 can detect the rotational speed of drive gear 2 at this moment, then control the output shrink of electric telescopic link 12 through controller 6, thereby draw out from logical inslot 11, make spring 9 spring brake lever 7 into the outside slot 4 of drive gear 2 through the power that rebounds, brake lever 7 can lock drive gear 2 through slot 4, make it stop rotating, can play emergency braking's effect, the braking effect to drive gear 2 when breaking down or making the personnel's misoperation, the article of hanging in the air has been prevented effectively, thereby the circumstances that threatens personnel's personal safety appears fast.

Example 2

As shown in fig. 1 to 5, based on the same concept as that of the above embodiment 1, the present embodiment further provides an emergency brake device for a manual hoist, wherein a rotation speed sensor 3 is disposed at the outer portion of one transmission gear 2, two transmission gears 2 are in meshed connection, a chain 14 is disposed at the bottom of the inner portion of the housing 1, the transmission gears 2 are used for driving the chain 14 inside the housing 1, a controller 6 is mounted above the outer portion of the protective cover 5, the rotation speed sensor 3 is electrically connected with the electric telescopic rod 12 through the controller 6, a fixed block 15 is fixedly connected at the top of the housing 1, a rotating block 16 is rotatably connected at the top of the fixed block 15, a hook 13 is fixedly connected at the top of the rotating block 16, a fixed block 15 is fixedly connected at the top of the housing 1, a limiting block is fixedly connected at both sides of the inner wall of the protective cover 5, a limiting plate 8 is slidably connected with the limiting block, and the brake rod 7 is made of an aluminum alloy material.

In this embodiment, the hook 13 is used for hanging the hand hoist on the support, and convenient to use, and 360 degrees rotations can be conveniently carried out to the hand hoist when using through pivoted turning block 16, and the body intensity of brake lever 7 can be promoted greatly through the brake lever 7 that aluminum alloy material was made to promote life.

Working principle:

when the manual hoist is in normal use, the rotating speed is normal, the output end of the electric telescopic rod 12 is positioned in the through groove 11, the spring 9 is tightly pressed through the limiting plate 8, when the manual hoist breaks down, the transmitted object rapidly drops, the chain 14 drives the transmission gear 2 to rapidly rotate, the rotating speed value preset by the rotating speed sensor 3 is exceeded, the rotating speed sensor 3 can detect the rotating speed of the transmission gear 2 at the moment, then the output end of the electric telescopic rod 12 is controlled by the controller 6 to shrink, and accordingly the electric telescopic rod 12 is pulled out from the through groove 11, the spring 9 ejects the brake rod 7 into the slot 4 outside the transmission gear 2 through the rebound force, the brake rod 7 can lock the transmission gear 2 through the slot 4, the brake rod is stopped to rotate, the emergency braking effect can be achieved, the hook 13 is used for hanging the manual hoist on the support, the use is convenient, the manual hoist can be conveniently rotated by 360 degrees when in use, the body strength of the brake rod 7 can be greatly improved through the brake rod 7 made of aluminum alloy material, and the service life is prolonged.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (6)

1. The utility model provides an emergency braking device of hand hoist, includes casing (1), its characterized in that, the outside both sides of casing (1) rotate and are connected with drive gear (2), the outside of drive gear (2) is circumference array and has slot (4), the outside fixedly connected with protection casing (5) of casing (1), the inside both sides sliding connection of protection casing (5) has brake lever (7), one side fixedly connected with limiting plate (8) that is close to drive gear (2) of the outside of brake lever (7), the outside of brake lever (7) just is located and is equipped with spring (9) between the inner wall of limiting plate (8) and protection casing (5), two the one end fixedly connected with fixed plate (10) of limiting plate (8) are kept away from to brake lever (7), logical groove (11) have been seted up to the inside of fixed plate (10), the outside below fixedly connected with electric telescopic handle (12) of protection casing (5), the output of electric telescopic handle (12) extends to the inside of logical groove (11) and with logical groove (11) swing joint.

2. The emergency braking apparatus of a manual hoist according to claim 1, wherein a rotation speed sensor (3) is provided outside one of the transmission gears (2), and the two transmission gears (2) are engaged with each other.

3. The emergency braking apparatus of a manual hoist according to claim 1, characterized in that a chain (14) is provided in the inside of the housing (1) extending to the bottom, and the transmission gear (2) is used for driving the chain (14) in the inside of the housing (1).

4. The emergency braking apparatus of a manual hoist according to claim 2, wherein a controller (6) is installed above the outside of the protective cover (5), and the rotation speed sensor (3) is electrically connected with the electric telescopic rod (12) through the controller (6).

5. The emergency braking device of the manual hoist according to claim 1, wherein a fixed block (15) is fixedly connected to the top of the casing (1), a rotating block (16) is rotatably connected to the top of the fixed block (15), and a hook (13) is fixedly connected to the top of the rotating block (16).

6. The emergency braking device of the manual hoist according to claim 1, wherein limiting blocks are fixedly connected to two sides of the inner wall of the protective cover (5), the limiting plates (8) are in sliding connection with the limiting blocks, and the braking rod (7) is made of an aluminum alloy material.