CN218025151U - Lifting transmission device of electric hoist - Google Patents

Abstract

The application discloses electric block's lift transmission for solve the electric block that prior art exists bulky, the structure is complicated, wire rope electric block's steel wire wearing and tearing are great, factor of safety is low, the not inseparable, the no limit structure of loop chain electric block, the short problem of motor life. This application includes casing, motor, lifting hook and brake valve lever, the motor is installed in the casing, brake valve lever is used for controlling the lifting hook and reciprocates, still includes the lift transmission structure, the lift transmission structure is provided with sprocket and chain, the sprocket is connected with motor drive, sprocket circumferential surface sets up flutedly, the chain around connect in the sprocket surface and spacing in the recess, the end and the lifting hook fixed connection of chain start through brake valve lever control motor, drive the sprocket rotation, and the chain rises or descends along with the rotation of sprocket to drive lifting hook elevating movement.

Description

Lifting transmission device of electric hoist

Technical Field

The application relates to the technical field of electric hoists, in particular to a lifting transmission device of an electric hoist.

Background

The electric hoist is called as an electric hoist for short, and is light and small-sized hoisting equipment. Most electric hoists are operated by a person using a control handle to follow the ground, or can also be operated in a cab or controlled by a wired (wireless) remote control. The electric hoist is generally arranged on a crown block and a gantry crane, has the characteristics of small volume, light dead weight, simple operation, convenient use and the like, and is used for industrial and mining enterprises, storage docks and other places. When the existing winding drum device of some electric hoists winds steel wire ropes, one layer of the winding drum device is wound together, and the steel wire ropes are directly pressed mutually, so that the extrusion deformation of the steel wire ropes is severe, the service life of the steel wire ropes is influenced, and the steel wire ropes wound together layer by layer are easy to block and inconvenient to use.

The steel wire rope electric block has the advantages of compact structure, light weight, small volume, strong universality of parts, convenient operation and the like, and is widely used for loading and unloading heavy objects, mechanical welding, installation and movement of mechanical equipment and the like. The steel wire rope electric block in the prior art basically adopts a single rail or needs two winding drums to wind the steel wire rope to realize the lifting of the two steel wire ropes, the heavy object lifted by the steel wire rope electric block lifted by the single rail is easy to shake, the safety coefficient is reduced, the steel wire rope electric blocks of the two winding drums increase the structure of equipment, the size is increased, the weight is increased, and the like.

The electric chain hoist has convenient operation and reliable performance, can be matched with a single-beam crane, a suspension crane, a flexible KBK system, a cantilever crane or a fixed I-steel rail and the like, is widely applied to factories, mines, ports, warehouses and goods yards, particularly production and assembly lines, has wide application range, has low working efficiency, is not tightly clamped, has no limit structure and has short service life of a motor.

Disclosure of Invention

Therefore, the application provides a lifting transmission device of an electric hoist, which solves the problems that the electric hoist in the prior art is large in size, complex in structure, large in steel wire abrasion of a steel wire rope electric hoist, low in safety coefficient, not tight in ring chain electric hoist clamping, free of a limiting structure and short in service life of a motor.

In order to achieve the above purpose, the present application provides the following technical solutions:

the utility model provides an electric block's lift transmission, includes casing, motor, lifting hook, brake valve lever and lift transmission structure, lift transmission structure is provided with sprocket and chain, the sprocket is connected with motor drive, sprocket circumferential surface sets up flutedly, the chain around connect in the sprocket surface and spacing in the recess, the end and the lifting hook fixed connection of chain start through brake valve lever control motor, drive the sprocket rotation, the chain rises or descends along with the rotation of sprocket to drive lifting hook elevating movement.

Optionally, the chain is composed of a plurality of long rings of which two ends are in a semicircular structure, each long ring is welded and sealed with two adjacent long rings at the semicircular structure after being hung and sleeved, and the long rings form a long-strip-shaped chain.

Optionally, the cross-sectional shape of the hitching rear section of two adjacent long rings is cross-shaped.

Optionally, the shape of the groove of the sprocket is adapted to the shape of the long ring which is continuously articulated, and all the long rings which are wound around the sprocket are limited in the groove.

Optionally, the groove is divided into a transverse groove and a longitudinal groove which are spaced in sequence along the circumferential direction, the transverse groove corresponds to the long ring which is placed flatly, and the longitudinal groove corresponds to the long ring which is placed vertically.

Optionally, the chain is connected one end with the lifting hook and is provided with the position piece that ends, end the position piece and cup joint in the chain outside, the chain other end is provided with the same position piece that ends and cup joints in the chain outside.

Optionally, a limit switch is arranged outside the housing and in a contact area of the chain penetrating through the housing and the chain wheel, and the limit switch is used for controlling the motor to stop.

Optionally, the chain box further comprises a chain bag hung outside the shell for accommodating the chain.

Compared with the prior art, the method has the following beneficial effects that:

1. this application uses sprocket and chain structure, and its bearing capacity is strong, and the chain wearing and tearing are little in the use, use the sprocket to replace the reel, and the structure volume is less, compares in wire rope electric block's steel wire transmission structure, and it is less to rock the range.

2. One end of the chain, which is connected with the lifting hook, is provided with a stop piece, the stop piece is sleeved outside the chain, and the other end of the chain is provided with the same stop piece which is sleeved outside the chain; and the chain penetrates through the shell and is provided with a limit switch in a contact area with the chain wheel, and the limit switch is used for controlling the motor to stop. Use limit structure, effectively prevent motor overload for motor long service life.

Drawings

To more intuitively explain the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes, configurations and illustrations in the drawings are not to be construed as limiting, in general, the practice of the present application; for example, it is within the ability of those skilled in the art to make routine adjustments or further optimizations based on the technical concepts disclosed in the present application and the exemplary drawings, for the increase/decrease/attribution of certain units (components), specific shapes, positional relationships, connection manners, dimensional ratios, and the like.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of a chain structure according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a groove structure according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of the structure of the stop member mounted on a chain (part) according to the embodiment of the present application;

FIG. 5 is a schematic structural diagram of a limit switch according to an embodiment of the present application after installation;

FIG. 6 is a schematic view of a chain pocket structure according to an embodiment of the present application;

description of reference numerals:

1. a housing; 2. an electric motor; 3. a hook; 4. a control handle; 5. a lifting transmission structure; 51. a sprocket; 511. a groove; 5111. a transverse groove; 5112. a longitudinal groove; 52. a chain; 521. a long ring; 6. a stop member; 61. a wafer; 62. a spring; 7. a limit switch; 8. a chain pocket.

Detailed Description

The present application will be described in further detail below with reference to specific embodiments thereof, with reference to the accompanying drawings.

In the description of the present application: "plurality" means two or more unless otherwise specified. The terms "first", "second", "third", and the like in this application are intended to distinguish one referenced item from another without having a special meaning in technical connotation (e.g., should not be construed as emphasizing a degree or order of importance, etc.). The terms "comprising," "including," "having," and the like, are intended to be inclusive and mean "not limited to" (some elements, components, materials, steps, etc.).

In the present application, terms such as "upper", "lower", "left", "right", "middle", and the like are generally used for easy visual understanding with reference to the drawings, and are not intended to absolutely limit the positional relationship in an actual product. Changes in these relative positional relationships without departing from the technical concepts disclosed in the present application should also be considered as the scope of the present application.

Examples

As shown in fig. 1, a lifting transmission device of an electric hoist, including a housing 1, a motor 2, a hook 3, a control handle 4 and a lifting transmission structure 5, the motor 2 is installed in the housing 1, the control handle 4 is used for controlling the hook 3 to move up and down, the lifting transmission structure 5 is provided with a chain wheel 51 and a chain 52, the chain wheel 51 is in transmission connection with the motor 2 and is installed inside the housing 1, the chain 52 surrounds the chain wheel 51 and is engaged with a groove 511 on the outer wall of the chain wheel 51, the chain 52 is fixedly connected with the hook 3, the motor 2 is controlled to start through the control handle 4 to drive the chain wheel 51 to rotate, and the chain 52 rises or falls along with the rotation of the chain wheel 51, so as to drive the hook 3 to move up and down.

As shown in fig. 2, the chain 52 is composed of a plurality of long rings 521 with two semicircular ends, each long ring 521 is welded and sealed with two adjacent long rings 521 at the semicircular structure after being hung and sleeved, the plurality of long rings 521 form a long chain 52, the cross section of the two adjacent long rings 521 after being hung and sleeved is cross-shaped, the shape of the groove 511 of the chain wheel 51 is matched with the shape of the long rings 521 hung continuously, and all the long rings 521 wound around the chain wheel 51 are limited in the groove 511.

As shown in fig. 3, the groove 511 is divided into a transverse groove 5111 and a longitudinal groove 5112, the depth of the transverse groove 5111 is the same as the thickness of the long ring 521, the longitudinal groove 5112 is vertically arranged in the middle of the transverse groove 5111, so that the transverse groove 5111 is divided into two equal segments by the longitudinal groove 5112, the transverse groove 5111 corresponds to the long ring 521 laid flat, and the longitudinal groove 5112 corresponds to the long ring 521 laid upright.

As shown in fig. 4, one end of the chain 52 connected to the hook 3 is denoted as a tail end, and is provided with a stop member 6, the stop member 6 is sleeved outside the chain 52, the other end of the chain 52 is denoted as a start end, and the same stop member 6 is sleeved outside the chain 52. The stop member 6 is composed of an annular disc 61 and a spring 62, and the elastic contact increases the service life.

As shown in fig. 5, a limit switch 7 is arranged outside the housing 1 and the chain 52 passes through the region of the housing 1, the limit switch 7 is in a cross-shaped sheet structure, and the motor 2 stops running when the stop member 6 is contacted with the limit switch 7.

As shown in fig. 6, the device further comprises a chain pocket 8, and the chain pocket 8 is hung outside the housing 1 for accommodating a chain 52.

The embodiment has the following beneficial effects:

1. the product uses sprocket and chain structure, and its bearing capacity is strong, and the chain wearing and tearing are little in the use, use the sprocket to replace the reel, and the structure volume is less, compares in wire rope electric block's steel wire transmission structure, and it is less to rock the range.

2. One end of the chain, which is connected with the lifting hook, is provided with a stop piece, the stop piece is sleeved outside the chain, and the other end of the chain is provided with the same stop piece which is sleeved outside the chain; and the chain penetrates through the contact area of the shell and the chain wheel and is provided with a limit switch which is used for controlling the motor to stop. Use limit structure, effectively prevent motor overload for motor long service life.

3. The product is structurally changed on the existing steel wire rope electric block, the starting speed of the product is higher than that of the traditional ring chain electric block, and the work efficiency is high.

4. The chain comprises a plurality of both ends for semi-circular structure's link, and every link articulates, a plurality of in semi-circular structure department and two adjacent links a long strip form chain, adjacent two link articulates the back cross-sectional shape and is the cross, and the rocking of heavy object when the chain structure can effectively reduce to articulate, and operating safety factor is high.

5. The recess shape and the long ring adaptation of sprocket, every encircles in the long ring joint of sprocket in the recess, the recess divide into horizontal recess and vertical recess, horizontal groove depth is the same with long ring thickness, vertical recess sets up perpendicularly at horizontal recess middle part, make horizontal recess be two sections that equal by vertical groove separation, recess shape and long ring adaptation, it divide into horizontal recess and vertical recess, make around connect in every long ring homoenergetic of sprocket spacing in the recess, the block is inseparabler, be applicable to high-speed running state, difficult production takes off the chain phenomenon during jack-up.

All the technical features of the above embodiments can be arbitrarily combined (as long as there is no contradiction between the combinations of the technical features), and for brevity of description, all the possible combinations of the technical features in the above embodiments are not described; these examples, which are not explicitly described, should be considered to be within the scope of the present description.

The present application has been described in considerable detail with reference to certain embodiments and examples thereof. It should be understood that several conventional adaptations or further innovations of these specific embodiments may also be made based on the technical idea of the present application; however, such conventional modifications and further innovations may also fall within the scope of the claims of the present application as long as they do not depart from the technical idea of the present application.

Claims (8)

1. The utility model provides an electric block's lift transmission, includes casing, motor, lifting hook and brake valve lever, the motor is installed in the casing, brake valve lever is used for controlling the lifting hook and reciprocates, and its characterized in that still includes the lift transmission structure, the lift transmission structure is provided with sprocket and chain, the sprocket is connected with motor drive, sprocket circumferential surface sets up flutedly, the chain around connect in the sprocket surface and spacing in the recess, the end and the lifting hook fixed connection of chain, start through brake valve lever control motor, it is rotatory to drive the sprocket, and the chain rises or descends along with the rotation of sprocket to drive lifting hook elevating movement.

2. The lifting transmission device of an electric hoist as claimed in claim 1, wherein the chain is composed of a plurality of long rings with semicircular structures at both ends, each long ring is welded and sealed with two adjacent long rings at the semicircular structures after being hung, and a plurality of long rings are composed into an elongated chain.

3. The lifting transmission device of the electric hoist as claimed in claim 2, wherein the cross section of two adjacent long rings after the hanging sleeve is cross-shaped.

4. The lifting transmission device of an electric hoist as claimed in claim 2, wherein the shape of the groove of the chain wheel is adapted to the shape of the long ring which is continuously hung, and all the long rings which are wound around the chain wheel are limited in the groove.

5. The lifting transmission device of an electric hoist as claimed in claim 4, characterized in that the groove is divided into a transverse groove and a longitudinal groove spaced in sequence along the circumferential direction, the transverse groove corresponding to the long ring laid flat, and the longitudinal groove corresponding to the long ring laid vertically.

6. The lifting transmission device of the electric hoist as claimed in claim 1, wherein the end of the chain is connected to the hook by a stop member, the stop member is sleeved outside the chain, and the starting end of the chain is provided with the same stop member sleeved outside the chain.

7. The lifting transmission device of an electric hoist as claimed in claim 6, wherein a limit switch is provided outside the housing and at a contact area of the chain with the sprocket through the housing, and the limit switch is used for controlling the motor to stop.

8. The lifting transmission device of an electric hoist as claimed in claim 1, further comprising a chain pocket hung outside the housing for accommodating the chain.

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