JP3510966B2 - Blind cold shutter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a cold protection shutter for a filling worker in a propane gas filling factory.

[0002]

2. Description of the Related Art Conventionally, a propane gas filling factory (FIG. 9) is installed on a floor surface about 1 m above the ground. Both sides have a platform shape and one side is equipped with an empty bottle loading truck and the other side is loaded with an actual bottle loading truck. Since it is designed to do so, a cold worker shutter for the filling worker is required. As the shutter, an overhead door, a fireproof shutter, a sheet shutter, or the like was used. However, when these doors or shutters are closed, there is a problem that the outside cannot be seen through, the inflow of outside air cannot be finely adjusted, the lighting is poor, and the ventilation is poor, which is unsafe for workers. was there.

[0003]

SUMMARY OF THE INVENTION The present invention is capable of seeing the outside even if the shutter is closed in a plant-like factory such as a propane gas filling factory, and is capable of controlling the outside air inflow. Rich in lighting and breathability,
The purpose is to measure work safety.

[0004]

To achieve the above object, the present invention provides a slat raising / lowering drum and a slat rotating pulley on a forward / reverse rotating horizontal main shaft mounted on a machine frame. A torque limiter is interposed between the main shaft and the machine frame.
Horizontally provided by U-shaped steels with a parallel interval therebetween, directly above this interval, the main shaft is axially supported by a bearing, and the sling wound on the vehicle is passed through the interval by a guide roller. And, the sling is fixed to both side surfaces of each slat, each slat is rotated through the sling, and the wire rope wound around the slat elevating drum is guided by the guide rollers within the above interval, and The wire rope is slidably inserted through the central through hole of the slat, slat lifting tools are provided at intervals between the lower surfaces of the upper and lower slats, and the wire is attached to the horizontal material for lifting the slats arranged immediately below the lowermost slats. When the lower end of the rope is connected, the protrusions for stopping the slat rotation provided on the above-mentioned vehicle are alternately blocked by the stoppers provided on the machine frame when the slat is moved up and down, and the torque limiter and the vehicle are adjusted. It rotates forward and backward by a certain angle and rotates each slat from the inclination direction to the horizontal direction when the slat rises, and rotates each slat from the horizontal direction to the inclination direction when the slat descends. When closing the shutter by the above, it is necessary to interpose an air circulation gap between the upper and lower slats.
Is formed by being blocked by the above stopper, and is relatively thick.
There a rectangular transparent plate is sandwiched between to form the slats in the window frame by the angle section steel and flat steel strip, the guide rollers provided at both ends a central portion of the slats slidably engaged in vertical guide rails Blind type cold weather shutter according to the first aspect of the present invention, wherein a worm gear is provided on the main shaft, and a forward / reverse rotation device is provided on a worm shaft of a worm that meshes with the worm gear. The blind type cold weather shutter according to the first invention is provided.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION In a shutter 27 which opens and closes a shutter 27 provided in a propane gas filling factory 25 of a platform type (FIG. 9), a hanging string for operation or a chain 7 is vertically operated as shown by a broken line in FIG. When the horizontal main shaft 11 is normally rotated (arrow a), each slat 5,
The shutters 27 can be closed by rotating 5 ′ and 5 ″ respectively in the tilt direction and lowering them (the phantom line in FIG. 4). Further, in this state, when the horizontal main shaft 11 is reversed (arrow b), the shaft 11 is rotated. The adjusting wheel 16 rotates together with the torque limiter 15 provided on the slat 5,
The angles 5 ′ and 5 ″ can be rotated about the fulcrum 6 in the direction of arrow b from the phantom line position (tilt position) in FIG. 4 to the solid line position (horizontal position) in FIG. You can
Ventilation can be adjusted by adjusting the gap w between the upper and lower slats 5, 5. And the gap w or slats 5,
The inside and outside of the entrance / exit 26 can be seen through 5 ′ and 5 ″.

Instead of the operation hanging string or the chain 7, a forward / reverse rotation brake motor (not shown) can be driven to rotate the horizontal main shaft 11 in the forward and reverse directions.

Further, as shown in FIG. 5, each slat 5, 5 ',
5 "is held horizontally, and in that state, the operating hanging string or chain 7 is operated in the vertical direction, or the forward / reverse rotation brake motor is operated to move each slat 5, 5 ', 5" to FIG. By raising as shown, it is possible to open between the floor surface 36 of the entrance / exit 26 and the slat 5 ″ in the lowermost stage to open the entrance / exit 26.

Each slat 5, 5 ', 5 "is reinforced by a relatively thick rectangular transparent plate 1 sandwiched by a window frame 4 made of an angle steel 2 and a strip steel 3 for reinforcement. The guide rollers 8, 8 provided at the fulcrums 6 at the central portions at both ends in the longitudinal direction are slidably engaged with the vertical guide rails 9, 9 to stop the swing of both ends.

Immediately above the uppermost slat 5 ', two horizontal machine frames 10 and 10 made of U-shaped steel and parallel to each other are arranged at a distance t.
, And both ends thereof are supported by columns on both sides of the entrance / exit 26. The horizontal main shaft 11 is provided directly above the interval t on the horizontal machine frames 10 and 10, and the bearings 28 and 2 are provided.
8 is pivotally supported. Then, a worm 13 is meshed with a worm gear 12 provided at one end of the shaft 11, and a worm shaft 13 ′ is pivotally supported on a machine box 29. This worm shaft 1
A sprocket 14 is provided at the tip of 3 ', and an endless chain 7 is hung downwardly on it. A sprocket 14 may be a winding train of a tuning string (for example, a wire rope), a worm shaft 13 'may be connected to an output shaft of a forward / reverse deceleration motor, or a horizontal main shaft 11 may be directly forward / reverse deceleration brake. It does not matter if the output shaft of the motor is connected.

On the horizontal main shaft 11 is a train 1
6, 16 ′ are provided, one of the pulleys 16 ′ is loosely supported on the shaft 11, and the other of the pulleys 16 is provided on the shaft 11 via the torque limiter 15, and when the shaft 11 rotates forward and backward. The slat rotation stop projections 16a and 16b provided on the other wheel 16 are alternately blocked by the stoppers S provided on the machine frames 10 and 10 so that the torque limiter 15 and the other wheel 16 rotate at a constant angle. Move the main shaft 11
It does not rotate more than a certain angle in accordance with the normal and reverse rotations of.
One of the pulleys 16 'is supported by the main shaft 11, and both of the pulleys 16 and 16' are independent of the main shaft 11, and are simply engaged and rotated by the torque limiter 15 only between the protrusions 16a and 16b. The torque limiter 15 presses a disc spring or a coil spring fixed to the main shaft 11 against the side surface of the adjusting wheel 16 and exceeds the frictional resistance only when the protrusions 16a and 16b and the stopper S are engaged with each other, and the main shaft 11 is positive. It is designed to rotate in the reverse direction.

Further, on the parallel main shaft 11, slats for raising and lowering slats 20 and 20 are fixedly provided in the forward and reverse rotation directions and sliding directions via a power lock 30 instead of a key, and wound around the drums 20 and 20. The wire ropes 21 and 21 are guided by the guide roller 31 within the interval t, and the wire ropes 21 and 21 are slidably inserted into the central thin holes 22 and 22 of the lower slats 5, 5'and 5 ". Then, a slat lifting tool 23 having a diameter larger than that of the central through hole 22 is provided on each lower surface of the upper and lower slats 5, 5.

Sprocket 1 provided on the worm shaft 13 '
4, the endless chain 7 is manually moved up and down to rotate the horizontal main shaft 11 forward and backward through the worm 13 and the worm gear 12, and the drums 20 and 20 are forwardly and reversely rotated to wind up the wire ropes 21 and 21. 6, all the slats 5, 5 ', 5 "can be raised to open the entrance / exit 26, or the wire ropes 21, 21 can be unwound to close the entrance / exit 26 as shown in FIG. Further, the worm shaft 13 'can be normally or reversely rotated by a normal or reverse rotation motor, or the main shaft 11 can be normally or reversely rotated by connecting the output shaft of the normal or reverse brake motor to the horizontal main shaft 11.

In the lowered state, the slat 5 is inclined from the solid line position in FIG. 4 to the imaginary line position in the standing state in the direction of the arrow a, and the upper and lower slats 5 are closed. In this closed state, as shown in FIG. 3A, the slat rotation stop projection 1
6b is blocked by the stopper S provided on the machine casings 10, 10 so that a slight ventilation gap w can be maintained between the upper and lower slats 5, 5.

A power lock 30 (FIG. 6) is interposed between the drums 20 and 20 and the horizontal main shaft 11 regardless of the key in order to easily adjust the length of the wire ropes 21 and 21 to the lower ends. Let

As shown in FIG. 1, a plurality of slats 5, 5 ', 5 "can be used by connecting them in the same plane in the longitudinal direction to adjust the length.

In FIG. 9, 25 is a platform type propane factory, 32 is an empty cylinder carrying-in conveyor, 33 is a filling cylinder carrying-out conveyor, 34 is a filling turntable, and 35 is a factory platform wall.

[0017]

EFFECTS OF THE INVENTION The present invention is applicable to propane gas filling factories, etc.
Shut off the shutter in the platform factory
Even though the outside can be seen through and outside air inflow can be regulated
In addition, it has good lighting and breathability, which helps to ensure work safety.
In order to achieve this, a transparent and strong slat is obtained by forming the slats by supporting the rectangular transparent plate with the shaped steel window frame as described above, and it is possible to obtain a cold winter wind in a platform type factory such as a propane gas filling factory. In addition to blocking and seeing through the inside from the outside, the angle of the closed slat can be adjusted by rotating the horizontal main shaft forward and backward, which has the effect of appropriately adjusting the ingress of outside air. Can keep members cold. In the present invention, the guide rollers provided at the central portions of both ends of the rectangular transparent plate can be engaged with the vertical guide rails on both sides to strengthen the closed state of the shutter as a whole. There is an effect that not only the slats can be rotated in the tilt direction and the horizontal direction, but also the slats can be opened and closed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state of a blind type cold weather shutter of the present invention before being raised as a whole.

FIG. 2 (a) is an enlarged front view of the torque limiter during ascent. (B) The figure is a front view of the drum in the slat rising state.

FIG. 3A is an enlarged front view of the torque limiter when descending. (B) The figure is a front view of the drum in the slat rising state.

FIG. 4 is a vertical cross-sectional view taken along the line AA of FIG. 1 in a state in which the angle of the slat of the closing shutter is adjusted.

FIG. 5 is a vertical cross-sectional view taken along the line BB of FIG.

FIG. 6 is a state view of all slats rising.

FIG. 7 is a partially enlarged vertical sectional view of a slat.

FIG. 8 is a vertical sectional view of a power lock provided between a horizontal main shaft and a slat lifting drum.

FIG. 9 is a plan view of a propane gas filling factory.

[Explanation of symbols]

1 rectangular transparent plate 2 shaped steel frame 3 flat steel frame 4 window frames 5 slats 5'top slat 5 ”bottom slat 6 fulcrum 7 Operating chain 8 guide rollers 9 Vertical guide rail 10 Parallel horizontal machine frame t interval 11 Horizontal main shaft 12 Worm gear 13 Warm 13 'worm shaft 14 sprockets 15 Torque limiter 16 car 17 slings 18 Guide roller 19 fastening 20 slat lifting drum 21 wire rope 22 Center through hole 23 Slat lifting device Horizontal rod for lifting 24 slats w Air circulation gap

Continued front page       (56) Bibliography Reference: Sho 60-129497 (JP, U)                 Actual development Sho 63-34291 (JP, U)                 54-79729 (JP, U)                 58-11098 (JP, U)                 Actual Kai 6-8694 (JP, U)                 Actual Kaihei 2-72797 (JP, U)                 Actual Development Sho 54-80650 (JP, U)                 Japanese Patent Publication Sho 50-627 (JP, B1)

Claims (3)

(57) [Claims] 1. A forward / reverse rotating horizontal main shaft mounted on a machine frame is provided with a slat lifting drum and a slat rotation adjusting wheel, and a torque limiter is interposed between the adjusting wheel and the main shaft. Two machine frames are provided directly above the uppermost slat by U-shaped steel horizontally with a parallel interval between them, and the main shaft is rotatably supported by a bearing just above this interval, and the sling is suspended around the vehicle. Through the above-mentioned interval by a guide roller, and the slings are fixed to both side surfaces of each slat, each slat is rotated through the sling, and the wire rope wound around the slat lifting drum is guided by the guide roller. The wire rope is slidably inserted through the center through hole of each slat below, and slat lifting devices are provided at intervals of the lower surfaces of the upper and lower slats, and the lowermost step is provided. The lower end of the wire rope is connected to the slat lifting horizontal member arranged immediately below the slat, and the slat rotation stopping projections provided on the above-mentioned wheel are alternately reversed to the stoppers provided on the machine frame when the slat is moved up and down. When the slat rises, each slat rotates from the inclination direction to the horizontal direction, and when the slat descends, each slat rotates from the horizontal direction to the inclination direction. In addition, when closing the shutter by lowering and tilting the slat, the above-mentioned protrusion is used so that an air circulation gap is interposed between the upper and lower slat.
Kiga blocked in the stopper will be formed, relatively
Thick rectangular transparent plate is sandwiched between to form the slats in the window frame by the angle section steel and flat steel strip, the guide rollers provided at both ends a central portion of the slats slidably engaged in vertical guide rails Blind type cold weather shutter. 2. The blind type cold weather shutter according to claim 1, wherein a worm gear is provided on the main shaft, and a forward / reverse rotation device is provided on a worm shaft of the worm that meshes with the worm gear. 3. The blind type cold weather shutter according to claim 1, further comprising a forward / reverse rotation motor for the main shaft.