KR102115587B1 - Two drum hoist - Google Patents

Abstract

The present invention is to provide a two-drum hoist. According to the present invention, the two-drum hoist comprises: a main body (20); two drums (30) mounted on the main body (20); a rope (34) wound around the two drums (30); and a load assembly (40) connected to the rope (34). The two drums (30) are mounted in parallel with each other on the main body (20), and the rope (34) is wound on the two drums (30) at the same time, and released at the same time to hoist up and down the load assembly (40).

Description

Two drum hoist

The present invention relates to a two-drum hoist, and more particularly, to a two-drum hoist of a new configuration that can expect a high working speed of the hoist by applying a two-drum.

When assembling and mounting in a predetermined position in a state where the cargo is lifted, such as in an automobile production line, a hoist is used to lift and move the cargo. That is, the hoist refers to connecting the cargo to a hook hanging on the end of a rope (wire rope or chain) so that the cargo can be moved up or down. At this time, the hoist is a type of hoist used for lifting and moving small-capacity cargo, and a large-capacity hoist used for moving and assembling large mechanical parts and equipment at a construction site such as a warehouse or a railway station.

The electric hoist has a function of lifting a heavy object and moving it to a desired position while moving to the front and rear sides (south and north) and left and right (east and west) on a rail mounted on the ceiling. In the electric hoist, a motor is installed in a body moving along a rail installed on the ceiling, and a shaft rotating according to the driving of the motor is connected to a reducer for reducing the number of revolutions of the motor, and a final reduction gear installed in the reduction gear The fixed shaft and the wire rope drum are wound on the outer circumferential surface in a spiral direction.

When carrying a heavy object by using the hoist configured as described above, first, hang the heavy object on the hook while loosening the wire rope wound around the wire rope drum.

Thereafter, when the motor is driven, the number of revolutions of the motor is decelerated by a speed reducer and the wire rope drum is gradually rotated, so that the loose wire rope is gradually wound around the wire rope drum, and accordingly, the weight suspended on the hook rises.

When the heavy object is raised, the main body moves along the rail by driving the motor, which is the driving source of the main body, so that the heavy object suspended on the hook is moved. Therefore, it is possible to transport the heavy object hanging on the hook to a desired position.

However, the conventional hoist has a disadvantage in that the work speed is slow and the work efficiency is limited when working in a high place (goyangjeong) building.

In addition, there is a problem in that the safety of the user is deteriorated when working with a general lever limit switch (only one operation is protected and controlled by preventing overwinding).

Korean Patent Publication No. 1997-0042215 (published July 24, 1997) Korean Utility Model No. 20-0377486 (Registered on February 22, 2005)

The present invention was developed to solve the problems as described above, and the object of the present invention is to implement a structure that increases the safety of the hoist user and can expect a high working speed of the hoist by applying two drums. It is intended to provide a drum hoist.

According to the present invention for solving the above problems, the main body; Two drums mounted on the main body; A rope wound around the two drums; It is provided with a two-drum hoist characterized in that it comprises a; rod assembly connected to the rope.

The two drums are mounted parallel to each other on the main body, so that the ropes are wound on the two drums at the same time and are unwound at the same time.

The rod assembly, a rod block coupled to the rope; And a load hook connected to the load block.

The rod block is provided with a rope winding guide roll, the rope is arranged in front and rear two side by side, and the outer circumferential surface of the rope winding guide roll is provided with two front and rear rope winding guide grooves, the two in the rope winding guide groove Characterized in that the rope is configured to be coupled.

Both ends of the shaft member provided at the center of the two drums are rotatably coupled to a pair of side-by-side mounting brackets, and the pair of mounting brackets are detachably coupled to the main body by fixing means, so that the main It characterized in that the two drums on the body are arranged side by side in the front-rear direction.

The main body is characterized in that a worm gear type limit switch is provided to be adjacent to the two drums.

The worm gear type limit switch is characterized in that it is detachably mounted to the main body by means of a bracket and a fixing means.

According to the present invention, a fast working speed of HOIST is guaranteed by applying TWO DRUM. It has the effect of increasing the speed when working in a high place (goyangjeong) building. In addition, by applying the basic specifications of the WORM GEAR TYPE limit switch rather than the general lever limit switch, there is an effect of increasing the user's safety when hoisting.

1 is a two drum hoist according to the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objects, features and advantages of the present invention may be more easily understood by referring to the accompanying drawings and the following detailed description. In addition, in describing the present invention, when it is determined that detailed descriptions of related well-known structures or functions may obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to the other component, but another component between each component It should be understood that may be "connected", "coupled" or "connected"

In addition, specific structures or functional descriptions in the present invention are exemplified for the purpose of explaining an embodiment according to the concept of the present invention, and the embodiments according to the concept of the present invention can be implemented in various forms and can be applied to the present specification or application It should not be construed as being limited to the embodiments described in.

Referring to the drawings, the two drum hoist according to the present invention, the main body 20 is movably coupled to the beam of the ceiling for movement of the hoist 6, the main body 20 has two drums 30 (Two drum) is installed.

The main body 20 may be configured to connect both ends of the connecting plate 24 between two side-by-side left and right side plates 24 by connecting means such as bolts. The main body 20 may be configured in a frame shape having both upper and lower sides, front and rear sides, and left and right sides. When the both ends of the connection plate 22 are in contact with the inner surfaces of the two side-by-side side plates 24, fasteners such as bolts are simultaneously fastened to the side plate 24 and the connection plate 22, so that the two side-to-side sides are parallel. The main body 20 in the form of a box to which the connection plate 22 is connected to the plate 24 is configured. The main body 20 may be configured in the form of a rectangular box in which two connecting plates 22 are connected to the two left and right side plates 24.

Two drums 30 are rotatably mounted on the main body 20. Two drums 30 are mounted on the main body 20 to become a two drum hoist.

Both ends of the shaft member provided at the center of the two drums 30 are rotatably coupled to a pair of parallel mounting brackets 32. Both ends of the shaft member provided in each of the two drums 30 via a rotational support member such as a bearing are rotatably coupled to the pair of parallel mounting brackets 32, so that the two drums 30 are It is configured to be rotated based on a pair of mounting brackets (32). Both ends of the shaft member provided at the center of the two drums 30 are rotatably coupled to a pair of parallel mounting brackets 32, and the pair of mounting brackets 32 are fixed to the main body 20 Removably coupled by means, two drums 30 are arranged side by side in the main body 20 in the front-rear direction. Each of the two drums 30 is rotatably coupled to a pair of mounting brackets 32, and a pair of mounting brackets 32 coupled to the shaft members of each drum 30 is connected to the main body 20. Since it is detachably mounted to the left and right side plates by fixing means, the two drums 30 are detachably mounted to the main body 20. At this time, the fixing means may be a fastener such as a bolt for fixing the pair of mounting brackets 32 detachably to both side plates 24 of the main body 20. When viewed from one side plate 24 side of the main body 20, two drums 30 are arranged side by side in the front-rear direction.

The rope 34 is wound on the two drums 30 at the same time and is configured to be released at the same time. The ropes 34 are connected to the two drums 30, respectively, and when the two drums 30 rotate in one direction, the rope 34 is wound on the outer circumferential surface of the drum 30 so that the rope 34 is the main body ( 20), when the two drums 30 rotate in the other direction, the rope 34 is released from the outer circumferential surface of the drum 30 and descends below the main body 20. Both ends of the rope 34 may be configured to be connected to the outer peripheral surfaces of the two drums 30, respectively. At this time, two ropes 34 are arranged side by side. The two drums 30 are configured such that both ends of the two parallel ropes 34 are connected to each other. Between the two drums 30, two strands of parallel ropes 34 may be continuously connected.

A rod assembly 40 is connected to the rope 34. The rod assembly 40 is connected to the rope 34 below the main body 20. The rod assembly 40 includes a rod block 42 and a rod hook 44.

The road block 42 is configured in a block shape with both sides open. A rope winding guide roll 43 is provided inside the road block 42. The roll shaft to be provided in the center of the rope winding guide roll 43 is coupled to the road block 42, so that the rope winding guide roll 43 can rotate in the road block 42. The outer circumferential surface of the rope winding guide roll 43 is disposed so as to face the left and right side opening portions of the road block 42.

The load hook 44 is connected to the load block 42. The upper end of the load hook 44 is connected to the lower end of the load block 42. A moving article (hoisting article) is hung on the rod hook 44. Hoisting work to hang the rope tied to the moving article to the rod hook 44 and lower the rope 34 below the main body 20 and to raise the rope 34 below the main body 20 Will do.

In the state in which the ropes 34 are connected to two drums 30, respectively, the ropes 34 are rope structures continuously connected between the two drums 30, inside the road block 42 The outer circumferential surface of the rope winding guide roll 43 is coupled to the rope 34 between the two drums 30. The rope winding guide groove 43G provided on the outer circumferential surface of the rope winding guide roll 43 is coupled to the rope 34. The rope 34 is coupled to the rope winding guide roll 43 of the road block 42 in the form of passing through the rope winding guide groove 43G on the outer circumferential surface of the rope winding guide roll 43. At this time, two of the ropes 34 are arranged side by side, and the front and rear two rope winding guide grooves 43G are provided on the outer circumferential surface of the rope winding guide roll 43. Dog rope 34 is configured to be coupled. When viewed from one side of the rope winding guide roll 43, two strands of parallel ropes 34 are structured to be seated on two parallel rope winding guide grooves 43G. Two rope winding guide grooves 43G of the outer circumferential surface of the rope winding guide roll 43 are spread over two parallel ropes 34, so that the road block is connected to two ropes 34 connected to the two drums 30. (42) the inside of the rope winding guide roll (43) becomes a combined structure. As a result, the rod assembly 40 is coupled to two strands of parallel ropes 34 connected to the two drums 30.

According to the present invention of the above configuration, the two drums 30 (two drums) are rotated in one direction so that the rope 34 is raised to a state close to the bottom of the main body 20, that is, a hoisted state In the rod assembly 40 is raised, the article (hoisting article) hanging on the rod hook 44 of the rod assembly 40 is raised, and the rod assembly 40 is raised and wound up. In the two drums 30 (two drums) are rotated in the other direction, the rope 34 goes down from the bottom of the main body 20, that is, in the recommended state, the rod assembly 40 is also By going down, it is possible to hang an article (hoisting article) on the rod hook 44 of the rod assembly 40. The two drums rotate so that the hoisting operation is performed.

At this time, in the present invention, because the two drums 30 (two drums) are provided, there are several useful effects compared to the existing ones, and these effects are as follows.

Since it is twice as fast as the normal hoist compared to the same tonnage (for example, 20 tons), the hoist working time is shortened and it can be optimized for a high-lift work place where a high speed is desired. The hoist hoisting work is twice as fast as before, and the above-described effect is produced.

Compared to a general hoist, the quantity of the motor 36 and the reducer is doubled, that is, since the motor 36 is connected to each of the two drums 30 and the reducer is also provided, the fatigue of the mechanical parts is reduced in half and the machine It has the effect of extending the life of the components of the device.

On the other hand, in the present invention, a worm gear type limit switch (WORM GEAR TYPE LIMIT SWITCH) is adopted. The worm gear type limit switch 50 has a micro switch 53, a motor control bracket 54, a worm 55, and a worm shaft 55 coupled to the switch body 52, and the worm gear 55 has a cam ( 57).

The switch body 52 is mounted on the main body 20. The switch body 52 is composed of a case and a cover, and is mounted on the main body 20 by means of fastening such as a bracket and a bolt.

The micro switch 53 is embedded in the switch body 52. The micro switch 53 is provided with a switching on/off button protruding to one side. A motor control bracket 54 (M/C BRACKET) is provided inside the switch body 52. The motor control bracket 54 is disposed at a position where the switching on/off button of the micro switch 53 can be pressed. The motor control bracket 54 is provided with a push guide roll 54PR. Therefore, when the cam 57 rotates, the switching on cam surface 57SNF and the switching off cam surface 57SOF of the cam 57 slip smoothly along the push guide roll 54PR, so that the cam 57 rotates By the motor control bracket 54, the operation of pressing the switching pin of the micro switch 52 and the operation of releasing the pressing state can be made more smoothly.

The worm 55 is embedded in the switch body 52. The mounting support shaft in the center of the worm 55 is coupled to a pair of bushes provided inside the switch body 52, so that the worm 55 is rotatably embedded inside the switch body 52.

The worm shaft 56 is rotatably coupled to the switch body 52. The worm shaft 56 is coupled to the switch body 52 to be rotatable by a bearing or the like. The gear portion of the outer circumferential surface of the worm shaft 56 is engaged with the worm gear portion of the outer circumferential surface of the worm 55, and the worm 55 rotates by rotation of the worm shaft 56. The worm shaft 56 is connected via a connecting means such as a coupler to the motor shaft of the motor 36 that rotates the two drums 30.

A cam 57 is mounted on the worm 55. The cam 57 is coupled to the mounting support shaft in the center of the worm 55. The cam 57 is coupled to the mounting support shaft in the center of the worm 55 by a cam bracket. The cam 57 includes a switching off cam surface 57SOF and a switching on cam surface 57SNF. When the worm 55 is rotated by the rotation of the worm shaft 56, the cam 57 rotates, so that the switching off cam surface 57SOF pushes the motor control bracket 54, and the micro switch 53 When the switching on/off button is pressed and the switching on cam surface 57SNF is in contact with the motor control bracket 54, the switching on/off button of the micro switch 53 is released.

When the motor shaft of the motor 36 rotates in one direction for hoisting the rope 34 of the hoist (the operation of pulling up the rope 34 of the hoist), the worm shaft 56 rotates in one direction while the worm 55 And the cam 57 are rotated in one direction. When the hoist rope 34 hoisting is in progress, the switching-on cam surface 57SNF of the cam 57 is brought into contact with the motor control bracket 54, and the micro switch ( Since the pressing state of the switching on/off button of 53) is released, hoisting of the hoist rope 34 proceeds, and when the hoist rope 34 is raised, the switching off cam surface 57SOF of the cam 57 is the The micro switch 53 is switched to the switching off state by the switching on/off button of the micro switch 53 while pressing the motor control bracket 54 and pressing the switching on/off button of the micro switch 53. Then, the power (power) for rotating the motor shaft of the motor 36 is blocked by the micro switch 53, and the two drums 30 are moved in the direction of the rope 34 to be hoisted for hoisting of the hoist rope 34. Hoisting of the hoist rope 34 is completed while the rotating operation is stopped.

On the other hand, when the motor shaft of the motor 36 rotates in the other direction for the hoist rope 34 lowering operation (the operation of lowering the rope 34 of the hoist), the worm shaft 56 rotates in the other direction. The worm 55 and the cam 57 are rotated in different directions. When the hoist rope 34 is unloaded, the switching on cam surface 57SNF of the cam 57 is connected to the motor control bracket 54. Since the pressing state of the switching on/off button of the micro switch 53 is released due to contact, the hoist rope 34 is unloaded, and when the hoist rope 34 runs down, the cam 57 is switched off. The micro switch 53 is switched off by the switching on/off button of the micro switch 53 while the cam surface 57SOF pushes the motor control bracket 54 and presses the switching on/off button of the micro switch 53. Switch to. Then, the power (power) for rotating the motor shaft of the motor 36 is blocked by the micro switch 53 to move the two drums 30 in the direction of lowering the rope 34 for the lowering operation of the hoist rope 34. When the rotating operation is stopped, the unwinding operation of the hoist rope 34 is finished.

Therefore, the present invention is a general hoist lever type, and by applying the WORM GEAR type limit switch as compared to the conventional one that only controls the hoisting limit to ensure safety, the safety of the hoisting and unloading operation can be ensured at the same time with only one WORM GEAR limit device. It can show more precise response performance compared to the general lever-type limit switch, thereby enhancing the user's safety.

In addition, in the present invention, a spring type limit switch (SPRING TYPE L/S) is provided to be adjacent to the two drums 30, so that the spring type limit switch additionally winds the winding (rope 34 to the two drums). Since the phenomenon of excessive hoisting is prevented, the overload of the hoist (mainly the overload of the hoisting motor 36) can be prevented to prevent damage to the hoisting motor 36, and the user's safety is secured by the precise response performance of the hoist. It has the effect of performing the strengthening action more reliably.

In addition, the rod block 42 is provided with a rope winding guide roll 43, two of the ropes 34 are arranged side by side, and the front and rear two rope winding guide grooves are provided on the outer circumferential surface of the rope winding guide roll 43. (43G) is provided, it is configured to be coupled to the two rope 34 to the rope winding guide groove (43G), it is possible to lift the rod assembly 40 more stably by the two ropes 34 . When the hoist is hoisted, the load is distributed and supported on the two ropes 34 in a balanced manner, thereby showing more precise operation responsiveness, and thereby, it is possible to ensure the safety of the operator (user) more reliably.

In addition, both ends of the shaft member provided at the center of the two drums 30 are rotatably coupled to a pair of parallel mounting brackets 32, and the pair of mounting brackets 32 are the main body 20 Since it is detachably coupled by a fixing means to, there is also an effect that the work is made more quickly and conveniently when separating or assembling the two drums from the main body 20.

In the above, specific examples of the present invention have been described above. However, the spirit and scope of the present invention are not limited to these specific embodiments, and various modifications and variations are possible within a range that does not change the gist of the present invention. Anyone who has it will understand.

Therefore, the above-described embodiments are provided to fully inform the person of ordinary skill in the art to which the present invention pertains, the scope of the invention, and should be understood as illustrative in all respects and not restrictive. The invention is only defined by the scope of the claims.

20. Main body 22. Connection plate
24. Side plate 30. Drum
32. Mounting bracket 34. Rope
40. Rod assembly 42. Road block
43. Rope winding guide roll 43G. Rope winding guide home
44. Road hook 50. Worm gear type limit switch
52. Switch body 53. Micro switch
54. Motor control bracket 54PR. Push guide roll
55. Warham 56. Warham Shaft
57. Cam

Claims (6)

Main body 20;
Two drums 30 mounted on the main body 20;
A rope 34 wound around the two drums 30;
Includes; rod assembly 40 connected to the rope (34),
The main body 20 is provided with a worm gear type limit switch 50 so as to be adjacent to the two drums 30,
The worm gear type limit switch 50 has a micro switch 53, a motor control bracket 54, a worm 55, and a worm shaft 56 coupled to a switch body 52, and the worm gear 55 has a cam ( 57) is configured to be combined,
The switch body 52 is mounted on the main body 20,
The micro switch 53 is built in the switch body 52, the micro switch 53 is provided with a switching on-off button protruding to one side,
A motor control bracket 54 is provided inside the switch body 52, and the motor control bracket 54 is disposed at a position where the switching on/off button of the micro switch 53 can be pressed,
The motor control bracket 54 is provided with a push guide roll 54PR,
The worm 55 is rotatably built in the switch body 52,
The worm shaft 56 is rotatably coupled to the switch body 52, the gear portion of the outer circumferential surface of the worm shaft 56 is engaged with the worm gear portion of the circumferential surface of the worm 55, the worm shaft 56 The worm 55 is configured to rotate by rotation, and the worm shaft 56 is connected to the motor shaft of the motor 36 rotating the two drums 30,
The cam 57 is coupled to a mounting support shaft in the center of the worm 55, the cam 57 has a switching off cam surface 57SOF and a switching on cam surface 57SNF,
When the cam 57 rotates, the switching on cam surface 57SNF and the switching off cam surface 57SOF of the cam 57 slip along the push guide roll 54PR, so that the cam 57 rotates While the operation of pressing the switching pin of the micro switch 52 by the motor control bracket 54 and the pressing state release operation is made,
When the worm 55 is rotated by the rotation of the worm shaft 56, the cam 57 rotates so that the switching off cam surface 57SOF pushes the motor control bracket 54, and the micro switch 53 It is characterized in that the switching on-off button is pressed, and the switching on-off button of the micro switch 53 is released when the switching on cam surface 57SNF is in contact with the motor control bracket 54. Two drum hoist.
According to claim 1,
The two drums 30 are mounted parallel to each other on the main body 20, so that the rope 34 is wound on the two drums 30 at the same time and released at the same time. Two drum hoist, characterized by being configured to grow.
According to claim 2,
The rod assembly 40,
A road block 42 coupled to the rope 34;
Two drum hoist, characterized in that comprises a; rod hook 44 connected to the load block (42).
According to claim 2,
Both ends of the shaft member provided at the center of the two drums 30 are rotatably coupled to a pair of parallel mounting brackets 32, and the pair of mounting brackets 32 are connected to the main body 20 Two drum hoists, detachably coupled by a fixing means, the two drums (30) are arranged side by side in the front-rear direction on the main body (20).
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