JPS6222537Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a powder feeding hose reel device for winding and unwinding an extension hose connected to a mobile working device.

Such a hose reel device is used to prevent the extension hose from hanging down or becoming tangled depending on the position of the working device, and to keep the extension hose neatly wound when not working.
Especially when a plurality of extension hoses are connected to one working device, this plays an extremely useful role in preventing the extension hoses from becoming entangled with each other.

By the way, in a conventional powder feeding hose reel, a winding drum having a hub is rotatably fitted onto a fixed shaft, and an annular airtight passage is defined between the fixed shaft and the hub with sealing members at both ends. The supply hose connector provided at one end of the fixed shaft and the above-mentioned airtight passage are connected through a passage provided inside the fixed shaft, and the extension hose connector provided on the outer periphery of the winding drum is connected to the airtight passage provided at one end of the winding drum. The airtight passage is connected to the airtight passage by another passage running in the direction. For this reason, powder is successfully fed into the extension hose at a position where the outlet of the passage in the fixed shaft and the inlet of the passage in the winding drum are opposed to each other, but if the outlet and inlet are offset from each other, There is a fatal drawback in that a steeply curved passage is formed between the part where the airtight passage enters from the outlet and the part which enters the inlet from the airtight passage, and the passage becomes clogged with powder.

The main purpose of the present invention is to eliminate the above-mentioned drawbacks.

Hereinafter, the present invention will be explained in detail based on the drawings.

1 and 2 show an embodiment of the present invention,
This is a hose reel device used to feed liquefied petroleum gas, two types of gas (oxygen), water, and powder to a working device (not shown).

That is, this example includes the following configuration essential to the present invention in order to feed the powder.

First, a winding drum 3 having a hub 2 is rotatably supported on a fixed shaft 1. A pair of bearings 4 interposed between the fixed shaft 1 and the hub 2 are provided as necessary, and these bearings 4 may be omitted.

A powder supply pipe 5 passing through the fixed shaft 1 from one end to the other end is coaxially fitted and fixed, and one end of the powder supply pipe 5 is connected to a powder supply source (not shown). A connecting portion 6 is provided to connect a powder supply hose (not shown). A starting end of a movable tube 8 is connected to the other end of the powder supply tube 5 via a swivel joint 7 so as to be rotatable around the axis of the fixed shaft 1 .

The movable tube 8 extends to the outer periphery of the winding drum 3 without forming any sharp bends, for example, so that its minimum radius of curvature is about eight times the nominal diameter.

An extension hose 9 is connected to the end of the movable tube 8,
By rotationally driving the winding drum 3 with the motor 10, the extension hose 9 can be wound around the winding drum 3, and the winding drum 3 can be
It can be drawn out from

In this example, the terminal end of the movable tube 8 is opened in the tangential direction of the winding drum 3 in order to prevent excessive force from being applied to the starting end of the extension hose 9 during winding and unwinding. This is not an essential configuration for the present invention.

This example further includes the following configuration in order to relay liquefied petroleum gas, oxygen, and water from their respective supply devices (not shown) to the work equipment.

That is, between the fixed shaft 1 and the hub 2, O
Annular first to fourth airtight passages 12 to 15 are defined at both ends by a sealing member 11 made of a ring. The first airtight passage 12 is an L-shaped passage 16 passed through the fixed shaft 1 and is open to one end side of the fixed shaft 1, and the other airtight passages 13, 14, and 15 are similarly L-shaped. Each passage 17, 18, 19 opens to one end side of the fixed shaft 1, respectively. Each passage 16, 1 communicates with the first and third airtight passages 12, 14.
8, a liquefied petroleum gas connector 22 is attached to the starting end of the passage 17 that leads to the second airtight passage 13, and a liquefied petroleum gas fitting 22 is attached to the starting end of the passage 19 that leads to the fourth airtight passage 15. An oxygen connector 23 is installed in each of the holes. Each supply hose (not shown) introduced from each supply device for liquefied petroleum gas, oxygen, and water is connected to a corresponding connector 20 to 23, respectively.

The airtight passage 12 is connected to an extension hose connector 25 provided on the outer periphery of the winding drum 3 through a passage 24 extending in the radial direction of the winding drum 3, and the other airtight passages 13 to 15 are similarly connected to each other. Each passage 26-28 is connected to a respective extension hose fitting 29-31.

These extension hose connectors 25, 29 to 31
Extension hoses 32 to 35 are respectively connected to the extension hoses 32 to 35, and these extension hoses 32 to 35 are wound around the winding drum 3 in synchronization with the extension hose 9 for powder.
It is fed out from the winding drum 3.

In the above embodiment, the winding drum 3 is formed into a cylindrical shape, but it may be formed into a cylindrical basket shape. Further, the winding drum 3 may be formed into a cylinder with different diameters or a tapered cylinder so that the amount of winding and unwinding of the extension hose on one side is different from that of the extension hose on the other side.

Furthermore, in the above embodiment, the winding drum 3 is connected to the motor 10.
However, the design may be changed to manually drive the winding drum.

Incidentally, as in the above embodiment, a highly flammable fluid, for example, liquefied petroleum gas, is passed through the second airtight passage 13, and the first and third airtight passages 12 on both sides thereof are
When water is allowed to flow through the tube 14, leakage of liquefied petroleum gas is more reliably prevented due to the airtight effect of the water, and there is an advantage that accidents such as explosions can be prevented.

In addition, in this embodiment, the hub 2 is divided into a plurality of parts in the axial direction and is configured to be tightly connected by the tie rods 36, so that the sealing member 11 can be installed easily and without difficulty. The member 11 can exhibit a sufficient sealing effect, and the inner circumferential surface of the hub 2 can be easily processed. Reference numeral 37 indicates each sealing member interposed between each divided portion of the hub 2, and 38 indicates each dust seal.

Now, as explained above, in the present invention, a movable tube is attached to the other end of the powder supply tube that is fitted concentrically into the fixed shaft through a swivel joint, so that the movable tube can be rotated around the axis of the fixed shaft. Since the movable tube that is connected and extended to the outer periphery of the winding drum does not form any sharp bends, the powder is smoothly fed into the extension hose without clogging the hose reel device.

In addition, it has a relatively simple structure in which the powder supply tube is inserted into the fixed shaft and the movable tube is rotatably connected via the swivel joint, so it is less likely to malfunction, and is easy and inexpensive to use. Can be implemented.

The present invention forms a plurality of annular airtight passages for different purposes with both ends partitioned by sealing members between the fixed shaft and the hub, and fixes one end of the L-shaped passage passed through the fixed shaft. One end of the shaft is open and the other end of the L-shaped passage is connected to an annular airtight passage, and a plurality of airtight passages for different purposes are provided on the outer periphery of the winding drum with passages extending in the radial direction of the winding drum. Since the extension hose is connected to the provided extension hose connector and the extension hose is connected to the extension hose connector, the powder and a plurality of hoses for different purposes can be wound up at the same time. Further, the powder line hose also passes through the shaft core and is connected to the hose via a swivel joint and wound up. Furthermore, various passages are formed within the fixed shaft.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a longitudinal sectional front view and FIG. 2 being a sectional view taken along the line A--A in FIG. 1. 1... fixed shaft, 2... hub, 3... winding drum, 5...
... Powder supply pipe, 37 ... Sealing member, 12, 13,
14, 15...Airtight passage, 16, 17, 18, 1
9...L-shaped passage, 6, 20, 21, 22, 2
3... Connection part, 7... Swivel joint, 8...
...Movable tube, 9...Extension hose, 24, 26, 2
7, 28... passage, 25, 29, 30, 31...
Extension hose connector, 32, 33, 34, 35...
extension hose.

Claims (1)

[Scope of utility model registration request] A drum having a hub is rotatably supported on a fixed shaft, a powder supply pipe penetrating from one end to the other end is coaxially fitted inside the fixed shaft, a plurality of annular airtight passages for different applications are formed between the fixed shaft and the hub, both ends of which are partitioned by sealing members, one end of an L-shaped passage provided inside the fixed shaft is opened to the one end side of the fixed shaft, and the other end of the L-shaped passage is connected to the annular airtight passage, a connection part is provided to connect a supply hose to the powder supply pipe and one end of the L-shaped passage, and a swivel is provided at the other end of the powder supply pipe. A hose reel device for powder feeding, characterized in that a starting end of a movable tube is connected to a fixed shaft via a joint so that it can be freely rotated around the axis of the fixed shaft, the movable tube extends to the outer periphery of the winding drum without forming a sharp bend, and an extension hose connected to the end of the movable tube can be wound onto the winding drum by rotating the winding drum, and a plurality of airtight passages for different applications are connected to an extension hose connector provided on the outer periphery of the winding drum by passages extending radially from the winding drum, and the extension hose is connected to the extension hose connector.