KR102392381B1 - Moving platform device and facility including the same - Google Patents

Abstract

A moving platform device and equipment including the same are disclosed. The disclosed moving platform device includes a platform, a safety handrail installed on the edge of the platform, one or more hoists installed on the upper part of the platform to be spaced apart from the platform, and one end and the other end are coupled to the platform and the hoist, respectively, of the hoist. and one or more lifting chains configured to elevate and lower the platform by action.

Description

Moving platform device and facility including the same

A moving platform device and equipment including the same are disclosed. More specifically, a gondola-type moving platform device useful for high-altitude work inside a water tank and equipment including the same are disclosed.

The wastewater treatment plant of semiconductor production facilities treats wastewater of various properties, including highly corrosive wastewater, by type and step-by-step, so multiple water treatment tanks are required.

Concrete is mainly used as the material for the water tank. Concrete has excellent price competitiveness and is easy to manufacture on site. On the other hand, waterproof construction is required to secure the durability of concrete from corrosive wastewater and prevent wastewater leakage due to cracks in concrete. It is important to build with high quality.

Scaffolding is frequently used as a temporary structure for working at height inside the tank. However, since the scaffold assembly and dismantling work in the water tank corresponds to the work at height in a closed space, the risk of an accident is high and it is difficult to reduce the number of workers put in. Moreover, as the height of the tank increases, the quantity of scaffolding increases and the working time and cost increase.

Hydraulic aerial platform (hereinafter simply referred to as 'aerial platform') is limited in that it can be used only when the manhole size is large enough to allow entry and exit of the aerial platform and the conditions for using a lifting crane to lift the aerial platform are met. there is.

Therefore, there is a need for a new facility or device that can replace the function of the existing temporary machine in terms of safety while solving the problems of the scaffold and the hydraulic aerial work platform.

One embodiment of the present invention provides a gondola-type moving platform device useful for working at height inside a water tank.

Another embodiment of the present invention provides a facility including the moving platform device.

One aspect of the present invention is

platform;

a safety rail installed on the edge of the platform;

one or more hoists installed on the upper part of the platform and spaced apart from the platform; and

One end and the other end are respectively coupled to the platform and the hoist to provide a moving platform device comprising one or more lifting chains configured to elevate and lower the platform by the action of the hoist.

The platform may be prefabricated.

The platform may include an H-beam as a main frame and an FRP grating as a scaffold, and the H-beam and FRP grating may be configured to be screwed together.

The hoist may include an inverter that enables adjustment of the elevating speed of the platform.

The moving platform device may further include a control panel configured to supply power to the hoist and process a control signal.

The moving platform device may further include a remote controller configured to transmit a control signal to the control panel to control the elevation speed and position of the platform.

The moving platform device may further include a protection device.

The protection device may include an overload prevention device, a fall prevention device, an emergency stop device, an overwinding prevention device, an overwinding prevention device, or a combination thereof.

Another aspect of the present invention is

water tank; and

It provides a facility including the moving platform device installed in the water tank.

The water tank includes a side slab, a lower slab and an upper slab, the hoist is installed on the upper surface of the upper slab, the moving platform device is installed inside the water tank, and the lifting chain passes through the upper slab Thus, one end and the other end may be respectively coupled to the platform and the hoist.

The platform may include a guide roller whose length is adjustable so as to be in contact with the wall surface of the water tank, and may be configured to ascend and descend without colliding with the wall surface of the water tank.

The water tank may include a vertical column in the inner center, and the platform may include a through hole configured to be inserted into the vertical column to elevate and descend without colliding with the vertical column.

The moving platform device according to an embodiment of the present invention has the following advantages:

(1) It is possible to remove the safety risk factors of scaffolding construction performed in a confined space, provide an open work space for workers inside the water tank, and shorten the time taken for vertical movement. From this, it is possible to secure the safety of the enclosed space, improve the quality of waterproofing work and improve labor productivity.

(2) It is possible to reduce the number of manpower invested in temporary construction for work at height in the confined space of the water tank.

(3) As the productivity of the main construction (waterproofing work) is improved, it is possible to reduce the number of waterproofing workers. According to the test installation results, it is expected to reduce the number of people input by 34.8% compared to the scaffolding, and the productivity of the waterproofing construction is expected to increase by 19%.

1 is a front view illustrating a state in which a moving platform device according to an embodiment of the present invention is installed inside a water tank.
2 and 3 are perspective views of the moving platform device of FIG. 1 viewed from another angle, and are views showing the devices mounted on the moving platform device together.
4 is a view showing the expected effect of the moving platform device of FIG. 1 compared to the temporary system.

Hereinafter, a moving platform device according to an embodiment of the present invention will be described in detail with reference to the drawings.

In the present specification, "upper" and "lower" refer to a portion located in a relatively reverse direction of gravity and a portion relatively located in a forward direction of gravity, respectively.

1 is a front view showing a state in which the moving platform device 100 according to an embodiment of the present invention is installed inside the water tank 200 .

Referring to FIG. 1 , the moving platform apparatus 100 according to an embodiment of the present invention includes a platform 110 , a safety handrail 120 , one or more hoists 130 , and one or more lifting chains 140 .

The platform 110 may serve as a scaffold for supporting the operator.

Also, the platform 110 may be prefabricated. For example, the platform 110 may include an H-beam as a main frame and a fiber reinforced plastics grating as a scaffold. The H-beam and FRP grating may be configured to be threaded. Therefore, the platform 110 can be assembled even inside the water tank 200 because it is possible to put in and take out through the water tank manhole (not shown, usually 1m x 1m size).

The platform 110 may be configured in a square shape. However, the present invention is not limited thereto.

The safety handrail 120 may be installed on the edge of the platform 110 . When the platform 110 is configured in a square shape, the safety handrail 120 may be installed on four edges of the platform 110 to surround the platform 110 .

In addition, the safety handrail 120, like the platform 110, is configured in a prefabricated manner to facilitate the carrying in and out of the manhole through the manhole, and the size may be determined in consideration of the size of the manhole.

The hoist 130 serves to elevate the platform 110 via a lifting chain 140 to be described later.

In addition, the hoist 130 may be installed on the upper portion of the platform 110 and spaced apart from the platform 110 . For example, a total of four hoists 130 may be installed on the upper portion of the platform 110 to be spaced apart from the platform 110 .

In addition, the hoist 130 may include an inverter (not shown) that enables adjustment of the elevating speed of the platform 110 . For example, the hoist 130 may adjust the elevating speed of the platform 110 in the range of 0.65 to 6.5 m/min.

The lifting chain 140 may be configured to elevate and lower the platform 110 by the action of the hoist 130 by coupling one end and the other end to the platform 110 and the hoist 130, respectively. For example, a total of four lifting chains 140 may be installed so as to be coupled one by one to four corners and four hoists 130 in the platform 110 .

By adopting a chain instead of a wire as the lifting line, the flat position of the chain is kept constant during elevating and lowering, thereby minimizing the size of the through hole of the upper slab 230 of the water tank 200 . Specifically, in order to install a lifting line (chain) penetrating the upper slab 230, the size of the temporary through-hole is determined so that the lifting line does not interfere with the lifting and lowering of the platform 110, and a through-hole is provided in the upper slab 230. to form Since the chain-type hoist 130 maintains a constant position of the chain during elevating and lowering, the size of the through-hole can be made smaller than that of the wire-type hoist. On the other hand, in the wire-type hoist, the position of the wire changes as the wire is wound or unwound on the drum when ascending and descending, so the through-hole must be made larger than the moving range of the wire, and for this reason, the size of the through-hole is larger than that of the chain-type hoist. . The larger the through hole, the higher the probability of interfering with the permanent piping sleeve or half PC, and the number of cases in which the moving platform device cannot be installed increases. Therefore, it is necessary to minimize the size of the temporary through hole.

Hereinafter, the moving platform apparatus 100 according to an embodiment of the present invention will be described in more detail with reference to FIGS. 2 and 3 .

2 and 3 are perspective views of the moving platform device 100 of FIG. 1 viewed from different angles, and are views showing the devices mounted on the moving platform device 100 together.

Referring to FIG. 2 first, the moving platform apparatus 100 may further include a control panel.

The control panel may be configured to supply power to the hoist 130 and process control signals.

In addition, the moving platform device 100 may further include a remote control (not shown).

The remote control may be configured so that the operator transmits a control signal to the control panel to control the elevating speed and stopping position of the platform 110 .

Next, referring to FIG. 3 , the moving platform device 100 may further include a protection device.

The protection device may include an overload prevention device, a fall prevention device, an emergency stop device, an overwinding prevention device, an overwinding prevention device, or a combination thereof.

The overload prevention device may include a load cell installed in the hoist.

The overload prevention device is configured to stop the platform 110 by sounding an alarm when the weight detected by the load cell exceeds a reference value, and/or controlling the operation of the hoist 130 through the control panel. can

The fall prevention device may be configured to stop the lowering of the platform 110 when the lowering speed of the platform 110 exceeds a reference value.

The emergency stop device may be configured to urgently stop the lifting and lowering of the platform 110 by ignoring the normal stop procedure when an emergency situation occurs due to an accident or the like.

The over-hoisting prevention device is configured to always stop the lifting chain 140 at the correct position regardless of the hoisting speed of the lifting chain 140, thereby improving work safety and preventing damage to the lifting chain 140, It can serve to prevent malfunction of the hoist 130 .

The overload prevention device is configured to always stop the lifting chain 140 at the correct position regardless of the unloading speed of the lifting chain 140, thereby improving work safety and preventing damage to the lifting chain 140, It can serve to prevent malfunction of the hoist 130 .

The moving platform device 100 according to an embodiment of the present invention having the configuration as described above is configured to be able to adjust the vertical height by electric power, thereby working at high altitude in a closed space such as the inside of the concrete water tank 200 . safety, construction quality and labor productivity can be improved.

Specifically, the moving platform device 100 can replace the existing temporary machine function in terms of safety, and allows the operator to move the platform 100 up and down to a position required for high-place work using electric power while allowing the operator to use the water tank 200. The four walls 210 and the ceiling construction can be performed at the same time.

Another aspect of the present invention provides a facility including a water tank 200 and the above-described moving platform device 100 installed in the water tank 200 .

Referring back to FIG. 1 , the water tank 200 may include a side slab 210 , a lower slab 220 , and an upper slab 230 .

In the facility, the hoist 130 is installed on the upper surface of the upper slab 230 , the moving platform device 100 is installed inside the water tank 200 , and the lifting chain 140 is the upper slab 230 . It may be configured such that one end and the other end are respectively coupled to the platform 110 and the hoist 130 through the.

The platform 110 includes a guide roller (not shown) whose length can be adjusted so as to be in contact with the wall surface (ie, the side slab 210) of the water tank 200 without colliding with the wall surface 210 of the water tank 200. It may be configured to elevate. That is, the platform 110 can ascend and descend along the wall surface 210 of the water tank 200 without shaking due to the guide roller. In addition, at least one guide roller may be installed at each corner of the platform 110 .

Also referring to FIG. 1 , the water tank 200 includes a vertical pillar 240 in the inner center, and the platform 110 includes a through hole (not shown) configured to be inserted into the vertical pillar 240 , the vertical pillar It can be configured to elevate without colliding with the.

In addition, the moving platform device 100 may be configured to elevate the platform 110 along the vertical column 240 .

4 is a view showing the expected expected effect of the moving platform device 100 of FIG. 1 compared to the temporary system.

Referring to FIG. 4 , compared to the temporary system, the moving platform device 100 of FIG. 1 shortens the number of temporary work days by 28.6%, reduces the number of temporary workers by 34.8%, and increases the productivity of the confined space (that is, the productivity of waterproofing work). It is expected to improve by 19.2%.

Although the present invention has been described with reference to the drawings, which are exemplary only, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100: moving platform device 110: platform
120: safety rail 130: hoist
140: lifting chain 200: tank
210: side slab 220: lower slab
230: upper slab 240: vertical column

Claims (12)

platform;
a safety rail installed on the edge of the platform;
one or more hoists installed on the upper part of the platform and spaced apart from the platform;
One or more lifting chains each having one end and the other end coupled to the platform and the hoist to elevate the platform by the action of the hoist;
a control panel configured to energize the hoist and process control signals;
a remote controller configured to transmit a control signal to the control panel to control the elevation speed and position of the platform; and
including protective devices,
The platform is prefabricated, comprising an H-beam as a main frame and an FRP grating as a scaffold, wherein the H-beam and the FRP grating are configured to be screwed together;
The hoist serves to elevate the platform through the lifting chain,
The hoist includes an inverter that enables adjustment of the elevating speed of the platform,
The protection device includes an overload prevention device, a fall prevention device, an emergency stop device, an overwinding prevention device, an overwinding prevention device, or a combination thereof,
The over-hoisting prevention device is configured to always stop the lifting chain at the correct position regardless of the hoisting speed of the lifting chain, thereby preventing damage to the lifting chain and preventing malfunction of the hoist,
The overload prevention device is configured to always stop the lifting chain at the correct position regardless of the unloading speed of the lifting chain, to prevent damage to the lifting chain, and to prevent malfunction of the hoist. platform device. delete delete delete delete delete delete delete water tank; and
A facility comprising the moving platform device according to claim 1 installed in the water tank. 10. The method of claim 9,
The water tank includes a side slab, a lower slab and an upper slab, the hoist is installed on the upper surface of the upper slab, the moving platform device is installed inside the water tank, and the lifting chain passes through the upper slab A facility configured such that one end and the other end are respectively coupled to the platform and the hoist. 10. The method of claim 9,
The platform includes a guide roller whose length can be adjusted so as to be in contact with the wall surface of the water tank, and is configured to ascend and descend without colliding with the wall surface of the water tank. 12. The method of claim 11,
The water tank includes a vertical column in the inner center, and the platform includes a through hole configured to be inserted into the vertical column, and is configured to elevate and lower without colliding with the vertical column.

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