KR20200125874A - Transmission belt hoist for the clean-room - Google Patents

Abstract

The present invention relates to an electric belt hoist for a clean room, capable of being used for work requiring a strict clean environment mainly in the fields of manufacturing semiconductors, displays, pharmaceuticals, chemicals, foods, and the like. The present invention provides the electric belt hoist for the clean room, wherein a lifting belt (30) is installed on a traveling trolley part (10) and is wound on or released from a main drum (50) of a winding part (40) to transfer a load lifted by a hook part (20), wherein the electric belt hoist comprises: the traveling trolley part (10); and a swivel part (1) installed on the traveling trolley part (10) and swiveling within a predetermined range according to the movement of the center of the lifting belt (30) at the time of lifting the lifting belt (30).

Description

Clean Room Electric Belt Hoist {TRANSMISSION BELT HOIST FOR THE CLEAN-ROOM}

The present invention relates to a clean room power belt hoist, and more particularly, to a clean room power belt hoist that can be used in a work requiring a strict clean environment, such as mainly in the manufacturing fields of semiconductors, displays, pharmaceuticals, chemicals, food, etc. will be.

Generally, a crane is for lifting and moving a load, and such a crane mounts a rail on the ceiling and installs a hoist to lift the load and transport it back and forth, left and right.

In particular, in the manufacturing field of semiconductors, displays, pharmaceuticals, chemicals, foods, etc., where environmental conditions directly affect the production quality of products, it is manufactured in a clean room with a clean working environment that blocks contaminants such as fine dust from the outside. Carry out the process.

A clean room hoist that transports various equipment, materials, etc. necessary in the process of performing the manufacturing process in such a clean room area needs special care so that dust does not occur in the process of lifting and lowering the load.

However, conventional hoists are configured to generate dust, such as chains or wire ropes.

That is, as a wire rope and chain made of a metallic material are used, there is a problem that contamination occurs due to metallic dust or the like in the process of unwinding and winding a hoist.

Accordingly, it is necessary to develop cranes and hoists of various structures for use in the clean room area.

Hereinafter, a hoist of various structures is examined through references.

To reference 1; A second transverse beam installed parallel to the first transverse beam; A traverse wheel provided with a traverse wheel so as to move along the second transverse axis beam and installed on the second transverse axis beam; And a hoist installed so as to lift a load on the traverse. A ceiling crane for a clean room composed of the same is disclosed.

In Reference 2; Two wire mounting wheels to allow easy mounting of the wire ends slowed down from the drum, and a hook device to move up and down lifting according to the movement of the wire; A traveling wheel that is driven to rotate by receiving power from a traveling motor; Disclosed is a clean room hoist device configured with a dust collecting wheel or the like that collects dust generated from the driving wheel so that it can be installed and used in a clean room.

In reference 3; Started a clean room crane system that minimizes the generation of dust due to friction when moving the driving wheel by attaching a guide plate made of stainless material on the guide rail in contact with the driving wheel or by wrapping a stainless cover. Has been.

In reference 4; A hoist frame for supporting a hoisting block to which a connecting means connected to the target equipment is symmetrically connected and fixed; A hook driving unit including at least four hooks installed to be rotatable at mutually symmetrical positions on the hoist frame; A drive shaft including a main drum for transmitting rotational force to a hook installed symmetrically at the center of the hoist frame; And there is disclosed a clean room hoist device using a flat belt consisting of a flat belt connected to at least four or more hooks.

To reference 5; A crane device configured to lift and transport heavy objects with precise position control of various equipment requiring positional movement by installing in a clean room requiring an extremely clean work environment such as ultra-precision products and equipment is disclosed.

Other references 6; A hoist of semiconductor and LCD manufacturing facilities has been disclosed that can move heavy objects in various positions by being installed directly in semiconductor and LCD manufacturing facilities and capable of 360 degree rotation and length adjustment.

In reference 7; Disclosed is a semiconductor package tray transfer device that lifts and transfers a tray in which a plurality of semiconductor packages are accommodated,

In reference 8; A mobile crane for clean rooms of semiconductor and display manufacturing facilities is disclosed.

As described above, the conventional hoist has a problem in that contamination occurs due to dust caused by the use of a metallic chain or wire rope.

For example, in the case of an electric chain hoist, grease oil must be applied for the use of the load chain as shown in FIG. 1, and there are various problems such as an additional vibration-proof cloth to prevent damage due to dust generation during operation. .

In the case of using a flat belt to minimize the occurrence of such pollutants, there is a problem that the center of gravity is tilted to one side during movement of the hoist.

In other words, like most hoists (chain type, wire type), belt hoists also recommend vertical winding of loads, but in the case of belt hoists, there is a risk of belt separation if the load is lifted out of the vertical direction.

(Reference 1) Korean Utility Model Publication No. 20-2010-0012521, 2010.12.17. (Reference 2) Korean Patent Application Publication No. 10-2004-0028839, 2004.04.03. (Reference 3) Korean Patent Application Publication No. 10-2004-0028840, 2004.04.03. (Reference 4) Korean Patent Application Publication No. 10-2012-0106454, 2012.09.26. (Reference 5) Republic of Korea Patent Publication No. 10-2016-0003274, 2016.01.22. (Reference 6) Korean Patent Publication No. 10-1630133, 2017.06.07. (Reference 7) Korean Patent Application Publication No. 10-2009-0091482, 2009.08.28. (Reference 8) Republic of Korea Patent Publication No. 10-2019-0027113, 2019.03.14.

An object of the present invention is to provide a power belt hoist for a clean room that can be effectively used in manufacturing fields such as semiconductors, displays, pharmaceuticals, chemicals, foods, etc. by preventing the generation of metallic dust under working conditions that require a strict clean environment such as a clean room.

Advantages of the present invention are that the position of the belt is automatically corrected so that problems such as belt separation do not occur when the load is lifted out of the vertical, and excellent work stability can be achieved by a solid connection of the belt. We would like to provide an electric belt hoist for clean rooms equipped with.

The present invention for solving the above problems

According to the invention described in [Claim 1]; What is claimed is: 1. A cleanroom electric belt hoist that installs a lifting belt on a traveling trolley part and winds or unwinds it on a main drum of a hoisting part to lift and transport a load with a hook part, comprising: on the traveling trolley part; When lifting the lifting belt, it is configured by installing a swivel part that swivels within a certain range according to the movement of the center of the lifting belt.

According to the invention described in [Claim 2]; The swivel part is; The bracket on which the wheel guiding the lifting belt is installed is connected to the fixed block and the rotating shaft, and the rotating shaft is installed on the fixed block coupled to the traveling trolley part, and the bracket on which the wheel is installed is configured to swivel around the rotating shaft. .

According to the invention described in [Claim 3]; The swivel part is; A rotating shaft is installed on the fixed block of the traveling trolley part, and the bracket on which the wheel is installed is rotated and coupled to the rotating shaft so that the bracket is swiveled left and right around the rotating shaft.

According to the invention described in [Claim 4]; The main drum is fixed by assembling and fixing the belt holder to the load wheel with bolts through a lifting belt between the load wheel and the belt holder, and after setting the limit by winding the lifting belt around the load wheel, the belts are crimped together and fixed. Configure it to be possible.

According to the invention described in [Claim 5]; The lifting belt wound around the main drum is made of Dyneema material so that dust is not generated when lifting or lowering the load.

According to the invention described in [Claim 6]; The roller surface of the wheel guiding the lifting belt is rounded so that the load of the lifting belt is evenly distributed on the wheel.

The present invention does not generate dust during lifting, so it can be effectively used in tasks requiring a strict clean environment such as displays, pharmaceuticals, chemicals, food manufacturing, etc., and automatically corrects the position of the belt when the load is shifted from vertical during lifting. It is performed as an advantage that does not cause belt separation problems.

The present invention does not use a chain or wire rope, which causes dust, and is composed of a lifting belt made of DYNEEMA material so that dust does not occur, thereby eliminating the need for additional parts and easy maintenance.

In the present invention, there is no dust generation during lifting, and the belt position correction is automatically performed, so that problems such as belt separation do not occur. Various benefits and effects can be expected, such as improving work stability and efficiency and contributing to productivity improvement.

1 is an explanatory diagram showing a problem of a conventional hoist
2 and 3 are perspective views of a hoist to which an embodiment of the present invention is applied
4 to 6 are configuration diagrams of a hoist to which an embodiment of the present invention is applied
7 is a partially exploded perspective view showing the configuration of a main drum in the present invention
8 and 9 are cross-sectional views showing the configuration of a main drum in the present invention
10 is an excerpt of the main part of the configuration of the swivel part of the present invention
11 and 12 are a front view and a left and right side view of a swivel part of the present invention
13 and 14 are cross-sectional views of the swivel part of the present invention
15 and 16 are operational state diagrams of the swivel part of the present invention
17 and 18 are configuration diagrams of a finishing fixing part of the present invention
19 is a block diagram of a wheel in the present invention

In the present invention, in a hoist that lifts and moves a load using a hook part while a traveling trolley part is installed on a ceiling rail and moves back and forth and left and right, the lifting belt for lifting the load is DYNEEMA; brand name, strong and flexible. It is made of material and has a structure in which the swivel part at the top of the hoist swivels within a certain range, so there is a risk of belt separation even when the load is lifted off the vertical. It is characterized by constructing a clean room transmission belt hoist so that it does not occur.

The traveling trolley part installed on the ceiling rail is composed of a traveling motor and a traveling wheel so that it can run on the rail.

The traveling trolley part includes a hoisting part for driving a hook part for lifting a load, and a hook part including a hook and a lifting belt to lift the load by being driven by the hoisting part.

In the present invention, the lifting belt for hoisting the hook part is made of DYNEEMA material without dust, and the traveling trolley part is swiveled so that there is no risk of belt separation, etc. even when the load is lifted off the vertical. Install the parts to compose the electric belt hoist for clean room.

Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

2 and 3 are perspective views of a hoist to which an embodiment of the present invention is applied, and FIGS. 4 to 6 are configuration diagrams of a hoist to which an embodiment of the present invention is applied.

As for the hoist, the traveling trolley part 10 is equipped with a traveling motor and a traveling wheel to move forward and backward along the rail of the ceiling, while lifting and moving the load with the hook part 20.

A lifting belt 30 is installed on the hook part 20 which is installed on the traveling trolley part 10 to lift the load, and the lifting belt 30 for lifting and lowering the hook (symbol omitted) is installed, and the lifting belt 30 is mounted on the hoisting part 40. The hook part 20 is interlocked and the hook 21 is installed to move up and down.

The hoisting part 40 is provided with a hoisting motor 60 and a hoisting limit 70 so as to lift or lower the hook part 20 by winding or loosening the lifting belt 30 around the main drum 50.

The main drum 50 winds or unwinds the lifting belt 30 in a forward and reverse rotation, and the lifting belt 30 wound around the main drum 50 is a hook part through a swivel part (1). Connect with (20).

The lifting belt 30, which is wound on the main drum 50 and is wound or unwound according to the forward and reverse rotation, to lift the hook part 20 is made of Dyneema material, so that dust is removed when lifting or lowering the load. As it does not occur and dust is not generated, it does not require the installation of additional parts such as dustproof cloth, and provides advantages such as easy maintenance.

And the main drum 50 is fixed by assembling the belt holder 52 to the load wheel 51 with bolts through the lifting belt 30 between the load wheel 51 and the belt holder 52 as shown in FIGS. 7 to 9 In this state, the lifting belt 30 is wound around the road wheel 51 3 to 4 times to set the limit, and then the load is hung up so that the belts are crimped to each other and fixed.

Such a coupling and fixing structure of the lifting belt 30 can be performed smoothly and stably in the winding or unwinding operation according to the forward and reverse rotation by firmly coupling the lifting belt 30 to the main drum 50.

The lifting belt 30 wound around the main drum 50 as described above allows the hook part 20 to rise and fall through the swivel part 1, and the swivel part 1 swivels within a certain range. Even when the load is lifted out of the vertical, the lifting belt 30 is configured so that there is no risk of separation.

Let's look at this in detail.

FIG. 10 is an excerpt of the main part of the configuration of the swivel part of the present invention, FIGS. 11 and 12 are front and left and right side views of the swivel part of the present invention, and FIGS. 13 and 14 are cross-sectional views of the swivel part of the present invention, FIG. 15, 16 is a diagram showing the operation of the swivel part of the present invention.

For the swivel part (1), a wheel (4,4') guiding the lifting belt (30) [guides the hook part (20) to rise and fall] is installed on the bracket (2), and the wheel (4,4') ) Installed bracket (2) is connected to the fixed block (3) and the rotating shaft (5, 5').

It goes without saying that the rotating shafts 5 and 5 ′ are installed before and after the bracket 2 as shown in the illustrated example, and can be implemented as a single shaft.

The fixing block 3 in which the bracket 2 is installed on the rotating shafts 5 and 5'is fixedly installed on the traveling trolley part 10.

In the above, it is natural that the axial directions of the rotating shafts 5 and 5 ′ coupled to the fixing block 3 and the axial directions of the wheels 4 and 4 ′ installed on the bracket 2 are crosswise with each other.

As described above, the swivel part (1) in which the rotating shaft (5,5') is installed on the fixed block (3) and the bracket (2) with the wheel (4,4') installed therein is rotatably coupled is the rotating shaft (5,5). The bracket (2) is swiveled left and right around'), so that the wheels (4,4') installed here are swiveled, and the lifting belt (30) guided to the wheels (4,4') is also It swivels.

Therefore, when the lifting belt 30 is driven and the load is lifted off the vertical, the wheels 4 and 4 ′ guiding the lifting belt 30 move the rotating shafts 5 and 5 ′ according to the movement of the center of gravity. By being swiveled around the center, the lifting belt 30 can be stably performed without causing a concern that the lifting belt 30 is separated.

In addition, the roller surfaces 41 of the wheels 4 and 4 ′ guiding the lifting belt 30 are rounded so that the load of the lifting belt 30 is evenly distributed on the wheels 4 and 4 ′.

Take a look at this.

In the existing configuration in which the roller surfaces 41 of the wheels 4 and 4 ′ are processed into a flat surface, the load may be concentrated to both ends of the lifting belt 30 due to structural characteristics, and in the end, the concentration of such load is the lifting belt ( Due to the characteristic of 30), the most vulnerable part of the lifting belt 30, which is a force on both ends, is a cause of lowering the durability of the lifting belt 30.

Therefore, by rounding the roller surface 41 of the wheel 4,4' to which the lifting belt 30 is guided, the lifting belt 30 is evenly distributed on the roller surface 41 of the wheel 4,4' By making it possible to solve the above problems.

On the other hand, as described above, the finish fixing part 6 of the lifting belt 30 guided to the wheels 4 and 4'is configured with a solid structure.

That is, the finishing fixing part 6 inserts the lifting belt 30 between the tape-processed belt holder 61 and the belt key 62 and applies a load to only one row of the lifting belt 30 to use the frictional force of the contact surface. The lifting belt 30 is fixed.

And the belt key 62 is formed with a number of projections (63, 63') to maximize the friction between the belt holder 61, the belt key 62, and the lifting belt 30, the finish fixing part 6 It allows the lifting belt 30 to be coupled very firmly.

Reference numerals used in the accompanying drawings to specifically describe the contents of the present invention are as follows.
10: running trolley part 20: hook part
30: lifting belt 40: hoisting part
50: main drum 51: road wheel
52: belt holder
60: hoisting motor 70: hoisting limit
1: Swivel part 2: Bracket
3:FIXED BLOCK 4,4':WHEEL
5,5': Rotary shaft 6: Finishing government
61: belt holder 62: belt key
63,63': protrusion

Claims (6)

In a clean room electric belt hoist that installs a lifting belt 30 on a traveling trolley part 10 and winds or unwinds it on the main drum 50 of the hoisting part 40 to lift and transport a load with a hook part 20,
To the traveling trolley part 10; A clean room electric belt hoist, characterized in that when lifting the lifting belt 30, a swivel part 1 that swivels within a certain range according to the movement of the center of the lifting belt 30 is installed. The method of claim 1,
The swivel part 1 is; The bracket (2) on which the wheel (4,4') guiding the lifting belt (30) is installed is connected to the fixing block (3) and the rotating shaft (5,5'), and the rotating shaft (5,5') Is characterized in that the bracket (2) on which the wheels (4, 4') are installed by installing on the fixed block (2) coupled to the traveling trolley part (10) is configured to swivel around the rotating shaft (5,5'). Clean room electric belt hoist. The method of claim 1,
The swivel part 1 is; Rotating shafts (5,5') are installed on the fixing block (3) of the traveling trolley part (10), and the bracket (2) with wheels (4,4') installed on the rotating shafts (5,5') is rotated. Clean room electric belt hoist, characterized in that the bracket (2) is configured to be swivel to the left and right around the rotation shaft (5, 5') by combining. The method of claim 1,
The main drum 50 is fixed by assembling and fixing the belt holder 52 to the load wheel 51 by bolting the lifting belt 30 between the load wheel 51 and the belt holder 52, and the lifting belt 30 A clean room electric belt hoist, characterized in that the belts are crimped to each other to be fixed by winding them around a road wheel (51), setting a limit, and then fastening a load. The method of claim 1,
The lifting belt 30 wound around the main drum 50 is made of a Dyneema material to prevent dust from being generated when lifting or lowering a load. The method according to claim 2 or 3,
The roller surfaces 41 of the wheels 4 and 4 ′ guiding the lifting belt 30 are rounded so that the load of the lifting belt 30 is evenly distributed on the wheels 4 and 4 ′. Cleanroom Electric Belt Hoist.

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