KR20030046029A - An apparatus for supplying a driving room of crane with clean air - Google Patents

Abstract

PURPOSE: A purified air supplier of a driver's room in a crane is provided to improve the working environment by supplying purified air to the driver's room and storing the purified air in an empty space of a crane girder for supplying the purified air for a long time. CONSTITUTION: A purified air supply device(20) supplies purified air to a driver's room(16) of a crane(10). Pipe connecting devices(40) are connected by installing in ends of a first pipe(42) and a second pipe(44). The first pipe is connected with the purified air supply device. The second pipe is arranged in a girder(14) of the crane. A pocket device(60) stores the purified air by connecting with the second pipe and installing in an inner space of the girder. An outlet(80) supplies the purified air to the driver's room by connecting with the second pipe and a third pipe(82) and being arranged in the driver's room. Thereby, the purified air is supplied to the driver's room.

Description

Cleaner air supply device for crane cab {AN APPARATUS FOR SUPPLYING A DRIVING ROOM OF CRANE WITH CLEAN AIR}

The present invention relates to a clean air supply apparatus of a crane cab for supplying clean air into the cab of a crane such as a molten iron crane for charging molten iron in an electric furnace of a steel mill, in particular, a plurality of air storage installed in the girder of the crane By storing a certain amount of clean air in the means-in-pocket and supplying it to the crane's cab, the driver in the cab for operation of the crane breathes in clean air instead of breathing into the polluted air in the factory. It relates to a clean air supply device of the crane cab to keep the working environment more clean.

In general, most heavy industry factories, such as steel mills, use overhead cranes installed in factories to move heavy loads.In order to operate such cranes, drivers must enter the cab of cranes and operate for a long time. The cab of is schematically shown in FIG.

That is, as shown in Figure 1, the crane girder 120 is moved along the rail 112 on the frame 110 erected in the factory, the cab 130 is installed on the lower side of the girder 120. .

However, in most factories, since the air in the factory is considerably contaminated due to various factors, the driver who has to stay for a long time in the cab 130 for the operation of the crane 100 breathes into the polluted air. The environment is poor.

That is, the driver in the crane cab 130 working in the polluted air area in which a large amount of dust or harmful gas is generated is introduced into the cab through the air gap installed in the cab gap or the ventilation device or the cab 130. Therefore, while the drivers in the cab 130 are working for a long time, there is a problem that occupational diseases caused by working environment pollution, such as headache or vomiting due to difficulty breathing by the air contaminated with the dust or harmful gas.

For example, as shown in FIG. 1, the molten iron crane 100 used in the mini mill electric furnace of the steel mill moves the ladle loaded with the molten iron produced in the blast furnace, and transfers the molten iron in the ladle to the electric furnace. When charging the ladle of the molten iron, the molten iron crane 100 is located directly above the electric furnace 140, so that various pollutants such as carbon monoxide, sulfur, dust, etc. generated during charging rises upward by the upward airflow. As a result, since the cab 130 of the molten iron crane 100 is located in an area where contaminated air is concentrated, the polluted air is sucked into the gap of the crane cab 130 to adversely affect the driver.

However, in order to prevent the air surrounding the crane cab 130 from being contaminated with dust or harmful gas and flowing into the cab 130, the air conditioner for circulating internal air installed in the cab 130 is currently provided. (Not shown) is equipped with a filter for filtering dust and noxious gas, but the filtered air is used, but in a state where the pollution of the surrounding air is intensified, it is difficult to clean the air more than a certain purity.

In addition, it is also possible to use a positive pressure device to prevent outside air from entering the cab by maintaining the internal pressure of the cab at a positive pressure to prevent the outside polluted air from entering the cab without using an air conditioner. It is almost impossible to use when the air is polluted.

In addition, the method of circulating inside the cab after inhaling polluted air outside the crane cab 130 using multi-stage filters and circulating the cab inside the cab is insignificant. The dust removal is effective to some extent, but the removal of harmful gases and odors is almost ineffective.

Therefore, instead of filtering the outside polluted air around the crane cab or preventing the inflow into the cab, the crane driver can clean the air for a long time by supplying clean air outside the factory to the cab while storing a certain amount of clean air in the crane girder. Would be more desirable.

SUMMARY OF THE INVENTION The present invention has been made to improve the above-mentioned problems. The object of the present invention is to supply clean air in a clean area uncontaminated to the cab of a crane, and to clean air in an empty space of a crane girder. By supplying the inside of the cab for a long time, the driver in the cab for operating the crane can always operate the crane while breathing with clean air, thereby improving the crane operator's working environment. To provide.

Figure 1 is a schematic diagram showing a problem caused by the air pollution by the driver in the conventional crane cab

2 is a schematic diagram showing an installation state of a clean air supply apparatus of the crane cab according to the present invention.

Figure 3 is a block diagram showing the overall configuration of the clean air supply apparatus of the inventors crane cab

Figure 4 is a front view of the main portion showing the clean air storage unit in the present inventors device;

Figure 5 shows a pocket for storing the crane of the clean air in the present inventors device,

(a) is the front structural diagram

(b) a perspective view

Figure 6 is a main view showing the connection configuration of the air supply pipe in the pocket means of the present invention device

7 (a) and 7 (b) are schematic diagrams showing a quick coupler used in the device of the present invention

Explanation of symbols on the main parts of the drawings

1 .... clean air supply 10 ... crane

12 .... Frame 14 .... GIRDER

16 .... Cab 20. Supply means

22 .... suction line 26 ... cooler

28 .... Fine filter 30 .. Storage tank

32,42a, 44a .... Pressure gauge 44b .... Safety valve

40 .... Tightening means 42,44,82 .... Piping

60 .... Pocket 64 ... Support

66 .... retaining ring 68 .... weight

70 .... Pocket 72 .... Fasteners

74 .... Connecting body 76 .... Cylindrical insert

78 .... opening valve 79 .... connector

80 .... Clean air outlet 84 .... Gas detector

86 .... Flow control valve

The present invention as a technical configuration for achieving the above object, the clean air supply means for supplying clean air to the crane cab; And,

Pipe fastening means installed at each end of the first pipe connected to the clean air supply means and the second pipe disposed on the girder of the crane and fastened in cooperation with each other;

A pocket means connected to the second pipe and installed in an internal space of the crane girder to store clean air; And,

It is connected to the second pipe and the third pipe, disposed in the crane cab discharge port for supplying clean air in the cab; by providing a clean air supply device of the crane cab consisting of.

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

Figure 2 is a schematic diagram showing the installation state of the clean air supply apparatus of the crane cab according to the present invention, Figure 3 is a block diagram showing the overall configuration of the present inventors device, Figure 4 is a clean air storage unit of the present invention device Figure 5 is a front view of the main part, Figure 5 is a view showing a pocket for crane storage of the clean air in the device of the present invention, Figure 6 is a main view showing the air supply pipe connection configuration of the pocket of the device of the present invention, Figure 7 It is a schematic diagram showing the quick coupler of the pipe connection used in the device of the present invention.

2 shows the overall configuration of the clean air supply device 1 of the crane cab of the present invention, the apparatus 1 of the present invention is largely the clean air supply means 20, the pipe fastening means 40 and the pocket It is divided into a means 60 and a cab outlet 80, each of these components 20, 40, 60, 80 is described in more detail as follows.

2 and 3, the clean air supply means 20 of the apparatus 1 of the present invention is shown. The clean air supply means 20 of the present invention is contaminated with the crane 10 installed. It is installed in the clean area (S1) outside the factory separated by area (S2) and factory wall.

That is, as shown in Figure 3, the clean air supply means 20, the suction pipe 22 having a suction filter 22a for removing dust contained in the air of the clean area, and the suction pipe 22 Compressor (24) connected to the compressed air supply, the cooler (26) connected to the compressor (24) to lower the temperature of the compressed air, contaminated in the air supplied to the compressed and connected to the cooler (26) A fine filter 28 for filtering the material again, and a storage tank 30 for storing the filtered and cooled compressed air and connected to the first pipe 42.

In addition, the storage tank 30 is provided with a pressure gauge 32 indicating an internal pressure, such a pressure gauge 32 is electrically connected to the compressor 24 through a control panel (not shown), the storage tank ( If the pressure of 30) is higher than the set pressure, the operation of the compressor 24 is stopped.

Next, Figures 3, 4 and 7 shows the tube fastening means 40 of the present invention device 1, such a pipe fastening means 40 of the present invention is the clean air supply means 20 And end portions of the first pipe 42 connected through the spaces S1 and S2 and the second pipes 44 disposed on the girder 14 of the crane 10 to be cooperated with each other.

That is, as shown in Figure 7, the pipe fastening means 40, the first pipe 42 and the pocket means 60 connected to the supply means 20 at the end of the first pipe 44 Installed and cooperated with each other to perform an air supply, and when separated from each other consists of a pair of quick coupler (40a, 40b) is cut off the air supply and air leakage, such quick coupler 40 is shown in Figures 7a and One of the two types of purchases shown in Fig. 7 may be used.

In addition, the quick coupler 40 is located on the top of the fixed plate 18 arranged horizontally on top of the frame 12, the crane rail 12a is installed to enable the connection and separation operation by the operator.

3 to 5 show the pocket means 60 of the device 1 of the present invention, the pocket means 60 of the present invention is connected to the second pipe 44 and the crane girder Is installed in the interior space of 14 is configured to store the clean air, the pocket means 60 for storing the supplied clean air is approximately five tablets in the interior empty space 62 of the crane girder 14 Degrees are arranged in sequence.

That is, as shown in FIG. 5, the pocket means 60 includes a support 64 vertically fixed to four points of the space 62 and a fixing ring fitted to the support 64 to move up and down. 66 and a plurality of fixing rings 66 are fixed to each corner in the vertical direction, and expand when air is supplied therein, and when the air supply is blocked, the air storage space contracted as a weight 68 seated on top. A rectangular pocket 70 having a 70a, and a fastener 72 provided to be connected to the second pipe 44 below one side of the pocket 70, the pocket 70 The bottom part is fixed on the base 70c installed in the bottom of the space room 62 of the crane girder 14.

5B and 6, the pocket fastener 72 is a cylinder formed integrally with the fixing portion 74a of the same material that is adhesively fixed to the lower end portion 70b of the pocket 70. A connecting body 74 formed of a portion 74b and a connecting portion inserted into the cylindrical portion 74b of the connecting body 74 and bonded to each other via a switching valve 78 connected to the second pipe 44. The tube 79 is comprised with the cylindrical insert 76 to which the screw is connected and fixed.

In addition, as shown in Figure 5a, the room 62 in the crane girder 14 is in contact with the weight 68, which rises during expansion to adjust the storage width of the clean air by adjusting the expansion width of the pocket 70. Limit switch 63 is installed to interlock the on-off valve 78 in operation, such a limit switch 63 in the expansion width of the pocket 70 according to the installation height, that is, the inner space (70a) The amount of clean air stored is configured to be controlled.

Next, FIGS. 3 and 4 illustrate the outlet 80 of the apparatus 1 of the present invention, which is connected to the second pipe 44 and the third pipe 82 to the outlet 80. It is arranged in the crane cab 16 to supply clean air to the cab 16.

Meanwhile, as shown in FIG. 3, the third pipe 82 connecting the outlet 80 and the second pipe 44 interlocks with the gas detector 84 installed inside the crane cab 16. A flow rate control valve 86 for controlling the discharge of clean air is installed, and the second pipe 44 detects the pressure of the supplied clean air and discharges the pressure outside the set pressure outside the set pressure 44a and safety valve 44b. Consists of the configuration to be installed.

Referring to the operation of the present invention made in the above configuration in more detail as follows.

As shown in FIGS. 2 to 7, when the compressor 24 of the supply means 20 installed in the clean area S1 is operated, the suction air from which dust is removed through the suction filter 22a is sucked into the suction pipe 22. The temperature is lowered in the cooler 26 through the compressor 24, and at the same time, fine contaminants in the air are filtered while passing through the fine filter 28, and then stored in the storage tank 30.

At this time, when the pressure of the storage tank 32 falls above the set pressure by supplying clean air from the storage tank 30 to the pocket means 60 to be described later, the pressure gauge installed in the storage tank 30 ( At 32), the compressor 24 is restarted through the control panel so that clean air is always stored in the storage tank 30 at least.

Of course, since the air stored in the storage tank 30 passes through several filter stages, there is a problem in the supply of clean air even if the clean air supply means 20 is located in a contaminated area, that is, a factory (S2) where most of the contaminated air is located. none.

Next, as shown in FIG. 3 and FIG. 7, the operator first fills the pocket 70 of the crane 10 with the clean air in the storage tank 30, first of one side of the frame 12 on which the rail 12a is installed. On the fixed plate 18, the pipe coupling means provided at the end of the first pipe 42 on the supply means 20 side and the second pipe 44 on the pocket 70 side, that is, the quick coupler 40a which is fastened in cooperation with each other. Tighten 40b.

At this time, the quick coupler 40a on the side of the first pipe 42 is always positioned on a fixed fixed plate 18, and the quick coupler 40b on the opposite side moves together during the movement of the crane cutter 14 to clean air. When the supply is performed, the crane girders 14 are positioned at positions where the quick couplers 40a and 40b may be fastened to each other, that is, on the fixed plate 18.

Therefore, as shown in FIG. 5, when the couplers 40 are fastened, the clean air stored in the storage tank 30 is sealed in the state in which the second pipe (with the flow control valve 86 at the cab 16 closed). 44 opens the on-off valve 78 through the fastener 72 to the pocket 70 to store the clean air in the pocket 70.

At this time, since the weight 68 for compressing the pocket 70 is fixed to the upper portion of the pocket 70, the supply air is supplied at a pressure enough to raise the weight 68. The pocket 70 stably guides the expansion of the pocket 70 by moving along the vertical bar 64 vertically installed in the girder space 62.

At this time, when the pocket 70 is inflated as much as possible, the weight 68, which operates the limit switch 63 installed in the space 62, the beacon lamp 63a connected thereto operates, so that the worker expands the pocket 70. When it is recognized that the maximum can not be stored any more clean air, the on-off valve 78 provided between the second pipe 44 and the fastener 72 is operated to clean air in the next pocket 70. To be stored sequentially.

On the other hand, the size of the pocket 70 is formed in the size of 2200L * 134W * 2150H, the material of the pocket 70 is formed of a polypropylene-based Sol Tarp (Sol Tarp) of about 0.5mm thickness, such as The storage capacity of the pocket 70 is 6.0 m 3, and in the present invention, a total of five are installed in the interior room 62 of the crane girder 14, and the total amount of clean air is 30 m 3, and the cab of the crane ( 16) The amount of air required for this is 0.14 ㎥ / min, so that the driver is 3.5 hours of use time after a single charge, the time required to charge the clean air as much as possible into the pocket 70 through the device of the present invention is five pockets It takes about 5 minutes based on (70).

When the clean air is filled in the pockets 70, the pressure gauge 44a installed in the second pipe 44 senses this, and at the same time, the pressure is stably maintained at the safety valve 44b to allow the inside of the pocket 70 to be filled. Maintain proper pressure.

Next, as shown in FIG. 3, when the quick couplers 40a and 40b connecting the first and second pipes 42 and 44 are separated, the supply of clean air is stopped and at the same time the quick coupler 40b. Since the leakage of air is also blocked at the same time, the clean air in the second pipe 44 and the pocket 70 is properly opened at the time of opening and closing the valve 78 and in the cab 16. In this case, the clean air is supplied to the cab 16 through the outlet 80 of the third pipe 82 connected to the second pipe 44, and the driver in the cab breathes the clean air to operate the crane.

Accordingly, as shown in FIG. 3, when the gas detector 84 is installed in the cab 16 and the gas detection amount is increased, the flow control valve 86 connected thereto increases its opening width to provide more cleanness. The air is supplied into the cab 16.

Thus, according to the clean air supply apparatus of the crane cab of the present invention, while supplying clean air in a clean area uncontaminated to the cab of the crane, while storing the clean air in the empty space of the crane girder (GIRDER) for a long time in the cab By supplying, the operator in the cab for operating the crane can operate the crane while always breathing in clean air, thereby providing an excellent effect of improving the working environment of the crane operator.

Therefore, the operator in the crane cab does not need a cumbersome work to prepare a mask and oxygen tank, and always perform the operation of the crane by breathing the clean air, thereby stably performing the crane operation without safety accidents.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to know that those who have knowledge of this can easily know.

Claims (6)

Clean air supply means for supplying clean air to the crane (10); And, Pipe fastening means installed at each end of the first pipe 42 connected to the clean air supply means 20 and the second pipe 44 disposed on the girder 14 of the crane 10 to cooperate with each other. 40; and A pocket means (60) connected to the second pipe (44) and installed in an internal space of the crane girder (14) to store clean air; And, And a discharge port 80 connected to the second pipe 44 and the third pipe 82 and disposed in the crane cab 16 to supply clean air to the cab 16. Clean air supply The method of claim 1, wherein the clean air supply means 20, A suction tube 22 having a suction filter 22a for removing dust contained in air A; and A compressor 24 connected to the suction pipe 22 to supply compressed air to the suction pipe 22; A cooler 26 connected to the compressor 24 to lower the temperature of the compressed air; and A fine filter 28 connected to the cooler 26 and again filtering contaminants in the compressed air; And, Storage tank for storing the filtered and cooled compressed air and connected to the first pipe 42; (30) Clean air supply apparatus of the crane cab According to claim 1, The pipe fastening means 40, the first pipe 42 and the pocket means 60 connected to the supply means 20 is provided at the end of the first pipe 44 to cooperate with each other. When it is fastened to perform the air supply, and when separated from each other consists of a pair of quick coupler (40a, 40b) that the air supply and air leakage is blocked, The quick coupler 40 is a crane, characterized in that located on the top of the fixed plate 18 arranged horizontally on top of the frame 12, the crane rail 12a is installed to enable the connection and separation operation by the operator Clean air supply in the cab The method of claim 1, wherein the pocket means for storing the supplied clean air (60) is arranged in a plurality in order in the interior empty space 62 of the crane girder 14, The pocket means 60, A support 64 fixed vertically to four points of the space 62; and A fixing ring 66 inserted into the support 64 and moving up and down; The fixing ring 66 is fixed in a plurality in the vertical direction to each corner portion, and has an air storage space 70a that expands when supplying air therein and contracts as a weight 68 seated on top when the air supply is blocked. Rectangular pocket 70; And, Clean air supply apparatus of the crane cab, characterized in that configured as; fasteners 72 are installed to be connected to the second pipe 44 in the lower side of one side of the pocket (70). The method of claim 4, wherein the pocket fastener 72, A connecting member 74 comprising a fixing part 74a of the same material adhesively fixed to the lower end 70b of the pocket 70 and a cylindrical part 74b integrally formed thereon; And, The cylindrical insert is inserted into the cylindrical portion (74b) of the connecting member 74, the adhesive is fixed, and the connecting pipe (79) connected to the second pipe (44) via an opening / closing valve (78) is connected and fixed by a screw method. Sieve 76; In the crane girder space 62, a limit switch for operating the on / off valve 78 to operate in contact with the weight 68 that rises during expansion to adjust the expansion width of the pocket 70 to adjust the storage amount of clean air. Clean air supply device of the crane cab, characterized in that the 63 is installed The exhaust pipe of claim 1, wherein the third pipe (82) connecting the outlet (80) and the second pipe (44) is discharged of clean air in cooperation with a gas detector (84) installed inside the crane cab (16). Flow control valve 86 for controlling by Clean air supply device of the crane cab, characterized in that the pressure gauge 44a and the safety valve 44b for detecting the pressure of the supply clean air and discharge outside when the pressure above the set is installed in the second pipe (44).