JPH0124058Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is useful when a worker enters an existing pipe such as a gas pipe or water pipe to clean the inside of the pipe or repair the pipe joint. This relates to a hose reel used to draw in an air hose, etc.

[Conventional technology]

When pulling hoses such as air hoses into the existing pipes mentioned above, if the pipe diameter is large enough for a worker to easily fit into the pipe, the worker's free movement inside the pipe will be restricted. It becomes impossible to drag a long hose into the pipe by holding one end of the hose.

Therefore, when pulling in this type of hose, the required length of hose is wound around a hose reel equipped with a ring, and the hose reel is introduced into the pipe by rolling the ring into contact with the inner surface of the existing pipe. By moving this reel, the hose wound around the reel is stretched and pulled into the pipe. However, with conventional hose reels, the hose is extended only in one direction, and then the hose is pulled in the other direction. It was designed to move and wind up the extended hose.

[The problem that the idea aims to solve]

By the way, when drawing hoses into a pipe using the conventional hose reel mentioned above, the problem is that the conventional hose reel extends the hose only in one direction. There is the inconvenience of having to move the hose reel to the end point, and when connecting the retracting end of the hose to other internal work equipment, the hose reel cannot be extended, making it inconvenient to connect. There were problems such as heat.

[Means to solve the problem]

The purpose of the present invention is to provide a hose reel that solves the above-mentioned problems.For this purpose, the present invention has a pair of left and right wheel bodies, and a hose reel that is pivotally supported between the left and right wheel bodies. a reel body that winds the
In the hose reel, the hose reel is provided with a handle for movement, and the wheel body is brought into contact with the inner surface of the existing pipe to draw the hose into the existing pipe, and between the wheel body and the reel body, there is a periphery of the wheel body. Equipped with a mechanism that rotates the reel barrel at approximately the same circumferential speed as the reel barrel speed, and by winding the required length of hose around the reel barrel in the same direction with a folded part in the middle. form a part of the hose that is reversely wound,
The present invention is characterized in that it is provided with a locking means such as a hook for removably locking the end of the hose that is reversely wound.

[Effect]

In such a configuration, when a hose reel is introduced into an existing pipe and a hose of a required length is drawn in, the hose wound around the reel body is initially moved in the direction of movement by a length corresponding to the distance traveled by the movement of the hose reel. The hose is pulled into the pipe by unraveling in the opposite direction, and when it approaches the destination inside the pipe, the hose is extended in the opposite direction by pulling out the free end of the reversely wound hose section. Therefore, there is no need to introduce the hose reel to the end point of the target location in the pipe.

In addition, when approaching the destination inside the pipe, the free end of the reversely wound hose section can be pulled out to extend the hose in the opposite direction, making it easy to connect the lead-in end of the hose to pipe repair equipment. Be able to do it quickly.

Furthermore, when the hose is unwound, the reversely wound part of the extension hose and the unraveled part of the extension hose are all moved so that they are simultaneously rewound onto the reel body as the hose reel moves in the opposite direction. This makes it easy to remove the hose.

〔Example〕

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings.

In the figure, reference numeral 1 is a support shaft, and 2 is a pair of wheels pivotally supported at both left and right ends of the support shaft, and tires are fitted on the outer peripheries of the left and right wheels 2, 2. A chain sprocket wheel 3 is fixed to the support shaft 1 on the inside of one wheel body 2, and a planetary chain sprocket wheel 4 is eccentrically supported on the inside of the wheel body 2. An endless chain 5 is wound between sprocket wheels 3 and 4.

Further, between the wheels 2, 2, the support shaft 1 has a reel body 6 with flanges 6a, 6b on both sides.
is rotatably supported, and one flange 6
A is formed with a gear 7, which is meshed with a planetary gear 8 which rotates together with the planetary chain sprocket wheel 4. A partition wall 9 is provided in the middle of the reel body 6, and a slit 10 into which the intermediate folded portion of the hose A is inserted is formed in the partition wall 9. In addition, the support shaft 1
U-shaped moving handles 11 are fixed to both ends of the handle.

Then, the diameter D 1 of the wheel body 2, the diameters D ₂ and D 3 of the sprocket wheels 3 and 4, and the diameters of the gears 7 and 8 are adjusted so that the circumferential speed of the reel body 6 and the circumferential speed of the wheel body _{2 match .} The diameters D ₄ , D ₅ and the diameter D ₆ of the reel body 6 are selected and set.

Now, the diameter D ₁ of the wheel body 2 and the diameter D ₆ of the reel body 6 are μ
If it has a ratio of =D ₁ /D ₆ , gear 7 is
It is necessary to set the condition that the ring body 2 rotates by μ every time it rotates once. However, the rotation speed of the planetary sprocket wheel 4 is 1 of the wheel body 2 when the rotation of the sprocket wheel 3 is 0 (since it is fixed to the support shaft 1).
For each rotation, α ₁ =D ₂ /D ₃ , which is also the rotation speed of the planetary gear 8 . On the other hand, when looking at the relationship between the planetary gear 8 and the gear 7, α ₂ = (μ×D ₄ /D ₅ )−D ₄ /D ₅ , so when α ₁ = α ₂ , D ₂ /D It is sufficient if the formula ₃ = (μ-1)D ₄ /D ₅ is satisfied.

The hose A wound around the reel body 6 is folded back in the middle, and the folded part is inserted into the slit 10.
By engaging and winding in the same direction, the hose portion A ₁ wound on one side is wound in an opposite relationship to the hose portion A ₂ wound on the other side. That's what I do.

In short, if the length of the hose section A ₁ to be reverse wound is ml ₁ and the length of the other hose section A ₂ is ml ₂ , then the length measured from the free end A ₃ of the hose section A ₂ is ml ₂ −ml
Display mark X at position ₁ (see Figures 4 and 5).
(see figure). Also, one hose part A ₁ that was wound backwards
A connection port fitting A ₄ is provided at the free end of the reel body 6 , and this connection port fitting A ₄ connects to one flange 6 of the reel body 6 .
It is designed so that it can be releasably engaged with a hook 12 provided on b.

In such a configuration, the operator hooks the connection fitting A ₄ on the free end side of the reversely wound hose portion A ₁ onto the hook 12 and moves the hose portion A _{1 by pulling out the other hose portion A 2} . Handle 11
When the hose reel is introduced and moved with its wheel body 2 in contact with the inner surface of the existing pipe B (see Fig. 3),
As the wheels 2, 2 rotate, the reel body 6 moves at the same circumferential speed.
rotates and advances in the opposite direction to the moving direction of the hose reel while unraveling the portion _A2 of hose A, thereby sequentially drawing hose A into the pipe.

When the hose A is pulled out to the position marked by the mark X, the operator removes the connection fitting _A4 from the hook 12, and then removes the reversely wound hose part _A1.
Move forward inside the existing pipe B by pulling it out (see Figure 4).

As a result, the hose reel follows the operator while rotating the wheels 2, ₂ while untying the hose portion A2 by an amount corresponding to the amount by which the reversely wound portion _A1 of the hose has been pulled out. That is, here, the worker moves at half the moving speed of the worker. In this way, the remaining hose windings are unraveled, and the hose A over the required length is drawn into the pipe (fifth
(see figure).

In addition, in this embodiment, a partition wall 9 is provided in order to reversely wind the hose A, and a slit 10 provided in the partition wall 9 is provided.
Although the hose A is passed through and folded back, a hook-type holder may be provided on the reel body 6 to hold the hose in a folded state. Further, the reason why the partition wall 9 is provided is to prevent the reversely wound portion _A1 and the non-reversely wound portion _A2 from becoming entangled and rolled up.

When taking hose A out of the existing pipe B, the operator pushes the handle 11 or reverses it and pulls it back inside the existing pipe B. Parts A ₁ and A ₂ of hose A are reeled at the same time. It is carried out by the rotation of the wheels 2, 2 while being rolled up in the shell 6.

Actually, the length of the above hose section A _{1 that is pulled out from the reel in order to connect the hose section A 1 to} the internal working equipment is small, so the above hose section A ₂ is compared to the reversely wound section A ₁ . It can be very long.

Preferably, the gas can be supplied even when the hose A is wound around the reel body 6. In this case, the hose A should be rigid enough to prevent the hose A from being crushed when it is wound around the reel body 6. must be given to Alternatively, it is necessary to devise a reel winding structure.

In this embodiment, even if the circumferential speed of the reel body 6 and the circumferential speed of the wheel body 2 are matched, the length of one turn of the hose A wound around the reel body 6 is the same as that of the hose A wound around the reel body 6 (outside The difference is whether it is inside or outside).
This is longer than the circumference of the reel body 6. However, at the time of unraveling, the faster the hose A is unraveled, the lower the running resistance of wheel body 2 will be, and when winding up, the hose A will be reeled in longer than the amount of movement of wheel body 2, so it will be possible to wind it up in a tight manner. There is also an advantage.

[Effect of idea]

As described in detail above, when the hose reel is brought into an existing pipe by rotating the wheels and the hose A is drawn in over the required length, initially the hose A corresponds to the distance traveled by moving the hose reel. The hose is drawn into the pipe by unraveling the length in the direction opposite to the moving direction, and when it approaches the destination inside the pipe, pull out the free end side of the reversely wound hose part _A1 . Since the hose A is configured to extend in the opposite direction, there is no need to carry the hose reel to the end point of the destination inside the pipe, and there is an advantage that the hose can be easily drawn in.

In addition, when approaching the destination inside the pipe, the free end of the reversely wound hose section _A1 can be pulled out to extend the hose A in the opposite direction. In addition to being easy to perform, there is also the advantage that in this case, the hose reel is located at a distance from the connection point, which provides a degree of freedom in connection.

Furthermore, when the hose that has been drawn into the pipe is taken out of the pipe, both the reversely wound part of the extension hose and the unraveled part of the extension hose are simultaneously transferred to the reel body by moving the hose reel in the opposite direction. Since it can be moved while being rewound, the hose can be easily removed.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of a hose reel according to an embodiment of the present invention, Fig. 2 is an exploded perspective view of the same part, and Figs. 3 to 5 are schematic side views showing how the reel is retracted. be. 1... Support shaft, 2... Wheel body, 3, 4... Chain sprocket wheel, 5... Chain, 6a, 6
b...Flange, 6...Reel body, 7...Gear,
8... Planetary gear, 9... Partition wall, 10... Slit, 11... Loop handle, 12... Hook,
A...Hose, A ₁ ...Reverse winding part of the hose, A ₂
... Other hose parts, A ₃ ... Free end, A ₄ ... Connection fitting, X ... Marker, B ... Existing pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of left and right wheel bodies, a reel body that is pivotally supported between the left and right wheel bodies and winds a hose, and a handle for movement, and the wheel body is attached to an existing pipe. In the hose reel, which draws the hose into the existing pipe by making contact with the inner surface of the hose, a mechanism is provided between the wheel body and the reel body to rotate the reel body at approximately the same circumferential speed as the circumferential speed of the wheel body. At the same time, by winding a hose of the required length in the same direction around the reel body with a folded part interposed in the middle, a part of the continuous hose is wound in reverse, A hose reel characterized by comprising a locking means such as a hook for removably locking the end of the hose that is reversely wound.