JP2001165495A - Ventilation air duct unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-move air duct unit in which the air duct body can be drawn out and contained while being folded uniformly and automatically in the longitudinal direction. SOLUTION: The ventilation air duct unit comprises a tubular air duct body 1 made of a sheet material, a support 2 having open opposite ends for containing the air duct body on the outer circumference thereof such that it can be folded and fed out, means 3 for coupling with a fan provided at one end of the support, and means 5 for feeding out the air duct body provided at the other end of the support. The feed out means comprises a mechanism for clamping the air duct body at a plurality of positions in the circumferential direction, feeding out the air duct body uniformly outward at the time of use and pulling in the air duct body to the outer circumference of the support at the time of containing it. The air duct unit has a traveling means 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a windpipe device used for ventilation in tunnels and underground structures.

[0002]

2. Description of the Related Art A wind tube used for ventilation in a tunnel or the like is composed of a wind tube main body formed into a tubular shape by a resin sheet material, and generally, an outer periphery of a cylindrical support tube having both ends opened. It is stored in a folded state on the surface. Then, the wind tube main body is pulled out from one end of the support cylinder as needed, and a fan is installed on the other end side of the support to perform suction or air supply. The wind tube main body is provided with a reinforcing ring member or a flange portion at a draw-out end, and is pulled out from the support by holding it with fingers or the like. Similarly, folding storage is performed by sequentially folding the wind tube main body fixed to the other end of the support from the end portion side in a bellows shape.

[0003]

Therefore, in the conventional windpipe device, it is difficult to uniformly pull out and store the windpipe main body because it relies on manual work.
The wind tube body may be partially rubbed against the drawer end of the support. In addition, at the time of storage, since the air tube main body is gradually and gradually folded from the fixed end side, it takes time for the operation. This problem at the time of storage also applies to the case where the wind tube body is damaged and a new wind tube body is folded and stored in the support.
Furthermore, since the weight of the device due to the air tube main body and the support increases, a large amount of labor is required for the movement.

[0004] It is an object of the present invention to provide a wind tube device capable of uniformly and automatically pulling out and folding and storing a wind tube main body in a longitudinal direction. Another object of the present invention is to provide a wind tube device that can be easily moved, in addition to the above objects.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention mainly has a point that a feeding means for automatically and uniformly feeding and storing an air tube main body is provided on a support. Specifically, the following configuration is provided. That is,
The present apparatus includes an air tube main body formed in a cylindrical shape by a sheet material, an open-ended support for storing the air tube main body in an outer periphery in such a manner that the air tube main body can be folded and extended, and a fan provided at one end of the support. And means for extending the air tube main body provided at the other end of the support. The feeding means comprises a mechanism for sandwiching a plurality of locations in the circumferential direction of the wind tube main body from the front and back surfaces and for uniformly feeding the wind tube main body to the outside of the support during use, and pulling the wind tube main body to the outer periphery of the support during storage. ing.

A conventionally known wind tube main body can be employed as it is. The support may have a cylindrical peripheral surface, or may be formed in a substantially cylindrical shape by assembling frame members vertically and horizontally, as long as the support has an open-ended structure that supports the wind tube main body from the inside. The support may also include a special type having an outer cylinder and an inner cylinder.

As long as the feeding means is a mechanism for evenly feeding the front and back surfaces of the wind tube main body, the specific structure and the number of installation are not limited. For example, the feed-out mechanisms are provided at four positions, that is, up, down, left, and right in the vertical section of the wind tube main body.

As a specific example of the feeding mechanism, a roller and a sphere are used. The roller rotates in contact with the outer surface of the wind tube main body. The sphere makes the wind tube main body abut on the feeding roller from the back surface side of the wind tube main body to ensure the feeding of the wind tube main body accompanying the rotation of the roller. It is preferable that a pair of feed rollers be provided at a position sandwiching the four positions of the upper and lower sides and the left and right sides of the air tube main body with a space therebetween. Each pair of rollers is fixed to a coaxial rotary shaft that is rotated by a motor. The contact sphere is located at a position facing each roller.

Preferably, the contact sphere is configured to be displaceable between an approach position and a separated position with respect to the rotor so that the wind tube main body can be easily set when the wind tube main body is stored. For this purpose, an air cylinder is provided in the direction of the center axis of the support. At the tip of the rod of the air cylinder, a vertically movable rod extending radially toward the feeding roller at the other end surface of the support is attached. Then, the contact sphere is fixed to the tip of the vertically moving rod. The tip of the rod of the air cylinder is formed in a tapered tapered shape, and the base end of the vertically operating rod is slidably supported in the axial direction. Move the operating rod up and down. It should be noted that other configurations in which the contact sphere can be displaced may be adopted. In order to achieve the second object, the present invention provides:
The windpipe device has running means. The traveling means may be either for traveling on a track such as a rail or for traveling on a trackless track. When the wind tube device has a traveling unit, a similar traveling unit is provided on the fan side. The traveling means may be of a self-propelled type driven by a motor or a hand-held type.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on illustrated embodiments. FIG. 1 is a schematic configuration diagram of an apparatus according to an embodiment of the present invention. Reference numeral 1 in the drawing denotes an air tube main body formed of a synthetic resin sheet material into a cylindrical shape having an outer diameter of 1300 mm and a drawn length of 50 mm. Reference numeral 2 denotes a support for accommodating and supporting the wind tube main body 1, and is formed by vertically and horizontally assembling frame members 2a such that the outline shape is substantially cylindrical.
Traveling wheels 8, 8 are mounted on a base 2b of the support 2. At one end of the support 2, a flange portion 3 for joining with the agitating fan 4 is attached. An inner end 1a of the wind tube main body 1 is fixed to an end of the support 2 on the side of the joining flange.

The other end of the support 2 is provided with a feed-out mechanism 5 for the air tube main body 1. As shown in FIG. 2, four feeding mechanisms 5 are provided at upper, lower, left and right positions obtained by dividing the circumference of the other end flange 1b of the support 2 into four equal parts. The structure of each feeding mechanism 5 is basically the same. The feeding mechanism at the upper position in the drawing will be described with reference to FIG.

The feeding mechanism 5 includes a pair of left and right feeding rollers 52, 52 fixed to a horizontal rotating shaft 51. The feeding roller 52 is a rubber roller, and is rotatably fixed via a bracket 53 at a position where it can contact the upper surface of the air tube main body 1. The rotation shaft 51 supporting the feeding roller 52 is rotated by a geared motor 54 fixed to one end of a bracket 53.

A contact ball 55 is provided at a position facing the feed roller 52. The contact sphere 55 is formed by the wind tube body 1.
Is pressed against the peripheral surface of the feed roller 52 from the back side of the roller, and the wind tube main body 1 is pulled out of the support 2 or pulled into the support 2 in cooperation with the rotation of the feed roller 52. . The contact sphere 55 is attached to the upper end of the vertically movable rod 56 so as to be displaced between a position where the wind tube main body 1 is pressed against the peripheral surface of the feeding roller 52 and a position where it is retracted therefrom. The left and right feeding mechanisms 5 are out of phase by 90 degrees with the upper and lower feeding mechanisms, and the rotation axis is positioned in the vertical direction.

Reference numeral 57 denotes an air cylinder (see FIG. 1) for operating the vertically movable rod 56. The air cylinder 57 is located in the end of the support on the side of the joining flange, and is disposed and fixed on the center axis of the support 2. I have. An operation rod 58 is connected to a rod 57a of the air cylinder 57. The operation rod 58 extends straight toward the other end of the support 2. Operation rod 5
8 has an inclined surface 59a which rises upward, and the base end of the vertically movable rod 56 is attached to the inclined surface 59a.
Is slidably mounted along. In the drawing, reference numeral 6 denotes a support pipe that covers the outside of the operation rod 58, and 7 denotes a support frame that supports the air cylinder 57, the operation rod 58, and the support pipe 6.

As shown in FIG. 4, this air duct device is used by joining a joining flange 1a to a ventilation fan side flange. The ventilation fan 4 includes traveling wheels 9 on a base 4a. The air duct device and the fan 4 are moved to the vicinity of the face as shown in FIG. Since the wind tube device and the fan 4 are provided with wheels on the bases 2b and 4a, they can be easily moved to a position suitable for collecting dust. When a switch (not shown) of the air tube device is turned on, the rod 57a of the air cylinder 57 and the operating rod 58 are retracted, and the base ends of the eight vertical operating rods 56 are inclined surfaces 59 at the distal end of the operating rod.
a, and each tip of the vertically movable rod 56 is displaced upward. As a result, the contact sphere 55 presses the air tube main body 1 from its back surface against the peripheral surface of each of the feed rollers, and the air tube main body 1 is held between the feed roller 52 and the contact sphere 55.

Next, the geared motor 5 of each feeding mechanism
When the feed roller 52 is rotated in the counterclockwise direction by driving the wind roller 4, the upper, lower, left and right ends of the wind tube main body 1 are automatically fed out of the support evenly by the feed roller 52 and the contact sphere 55. . The wind tube main body 1 pulled out from the support 2
For example, as shown in FIG. 5, it is connected to the tip of a lightweight duct 11 communicating with the dust collector 10. The dust in the vicinity of the face sucked by the fan 4 is collected in the dust collector via the stretchable wind tube main body 1 and the lightweight duct 11. As the excavation work progresses, the fan 4 and the windpipe device are moved to a position close to the face.

When the wind tube main body 1 is stored in the support 2,
The rotating shaft 51 of the geared motor 54 is reversed, and the feeding roller 52 is rotated clockwise. Similarly, the wind tube main body 1 is equally drawn into the supporting body by the feeding roller 52 and the contact sphere at the upper, lower, left and right positions of the peripheral surface. The retracted wind tube main body 1 is automatically folded sequentially along the horizontal frame 2 a of the support 2.

If the wind tube main body 1 is damaged during use and needs to be replaced, the damaged wind tube main body 1 is removed from the support 2 and the end of the new wind tube main body 1 is fed out by the feed roller 52.
And the contact ball 55. At this time, the cylinder 57
The rod 57a and the operating rod 58 are advanced, and the vertically operating rod 56 is displaced downward along the inclined surface 59a at the distal end of the operating rod. As a result, a gap is formed between the contact sphere 55 and the feeding roller 52, and the end of the new air tube main body 1 may be inserted into this gap. Then, the rod and the like of the cylinder 57 are operated again to sandwich the end between the feeding roller 52 and the contact ball 55, and the feeding roller 52 is rotated to sequentially fold and store the wind tube main body 1 in the support 2.

[0019]

According to the present invention, the following effects can be obtained. At the draw-out end of the support for accommodating and supporting the wind-tube main body, there is provided a feeding means for feeding the wind-tube main body evenly by sandwiching a plurality of locations in the circumferential direction of the wind-tube main body from the front and back surfaces and drawing the wind-tube main body to the outer periphery of the support. Withdrawal and folding storage of the pipe main body can be performed uniformly and automatically, and installation and storage work of the wind pipe main body can be efficiently performed. According to the invention provided with the traveling means of claim 2, the wind pipe device can be easily moved to an appropriate position, not only can contribute to the efficiency of excavation work, but also can effectively collect dust, and It can contribute to improving the environment.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a wind tube device according to an embodiment of the present invention.

FIG. 2 is a right side view of the apparatus of FIG.

FIG. 3 is a sectional view showing details of a feeding mechanism used in the apparatus of FIG. 1;

FIG. 4 is a schematic configuration diagram of a state where the device of FIG. 1 is joined to a ventilation fan.

FIG. 5 is an explanatory diagram showing an example of use of the device of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wind tube main body 2 Support body 3 Flange part for joining with fan 4 Fan 5 Feeding mechanism 8, 9 Wheel 52 Feeding roller 54 Geared motor 55 Contact ball 56 Vertical movement rod 57 Air cylinder 58 Operation rod 59 Operation rod tip 59a Slope

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F24F 13/02

Claims (9)

[Claims] 1. An air tube main body formed in a cylindrical shape by a sheet material, a support having an open end at both ends for storing the air tube main body in a foldable and extendable manner, and a fan provided at one end of the support. And a feeding means for the air tube main body provided at the other end of the support, and the feeding means sandwiches a plurality of circumferential portions of the air pipe main body from the front and back surfaces, and when used, holds the air pipe main body. A ventilating air tube device, comprising: a mechanism for drawing out the air tube main body to the outer periphery of the support while storing the air tube main body at the time of being stored, while uniformly feeding the air tube to the outside of the support. 2. The ventilation wind tube device according to claim 1, further comprising a traveling means for traveling on orbit or traveling without track. 3. The ventilation wind tube device according to claim 2, wherein the fan has running means for running on a track or tracklessly. 4. The ventilation duct according to claim 1, wherein the support is formed in a substantially cylindrical shape by assembling frame members vertically and horizontally. 5. The ventilation tube device according to claim 1, wherein four of the delivery mechanisms are disposed at positions sandwiching four positions of the wind tube main body in the upper, lower, left and right directions. 6. The delivery mechanism according to claim 1, wherein the delivery mechanism includes a delivery roller that contacts an outer surface of the wind tube main body, and a sphere that contacts the wind tube main body with the delivery roller from the back side of the wind tube main body. The described air duct device for ventilation. 7. A pair of feed rollers are provided at intervals so as to sandwich four portions of the wind tube main body, up, down, left and right, and each pair of rollers is fixed to a coaxial rotary shaft which is rotated by a motor. The ventilation tube device for ventilation according to claim 6, wherein the contact sphere faces each roller. 8. An air cylinder is provided in the center axis direction of the support, and an up / down operating rod extending in a radial direction toward the feed roller at the other end surface of the support is attached to a tip of a rod of the air cylinder. The ventilation tube device for ventilation according to claim 6 or 7, wherein the contact sphere is fixed to a tip of a vertically operating rod. 9. A rod of an air cylinder, wherein the tip of the rod of the air cylinder is formed in a tapered shape with a tapered shape, and the base of the vertically operating rod is slidably supported in the axial direction at the tip of the rod. The ventilation wind tube device according to claim 8, wherein the vertical movement rod moves up and down in accordance with the forward and backward movements of the air duct.