JPH0240057Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is useful for spraying chemical solutions in fields, vegetable gardens, afforestation areas, orchards, etc., extinguishing fires at fire sites, cleaning the inner walls of sewer pipes, etc. In the event of an interruption, etc., a long stretched hose connected to a spray nozzle for ejecting liquid is driven by a prime mover by switching the flow path with a three-way kettle set on a support coaxial with the winding cylinder. By rotating the working wheel and the winding cylinder integrally by pressing and contacting the working wheel with the annular piston, the structure is simpler and the operation is easier than with conventional automatic hose winding means. It is certain that
This invention relates to a rapid automatic hose winding device.

[Conventional technology]

Conventionally, when performing work such as spraying chemical solutions to fields, vegetable gardens, afforestation areas, orchards, extinguishing fires at fire sites, or cleaning the inner walls of sewer pipes, spray nozzles that eject liquids such as chemicals or water are used at the tip. As a means for automatically winding the attached long hose onto the winding cylinder, for example, (i) a through hole is provided inside a spindle that rotatably supports the winding cylinder, and one end of the through hole is connected to a compressor. while making the valve communicate with the opening at the other end, and making the piston rod freely appear and retract from the cylinder which is communicated with the opening via the connecting pipe.
A rotor coaxial with the final stage gear is brought into contact with the inner circumferential surface of the winding cylinder through a gear attached to the tip of the piston rod and a group of gears meshing with this gear, and the end of the push rod to which the valve is attached The side edge of the oscillator to which the tow string is attached is brought into contact with the tow string, and the valve is opened by pulling the tow string, and compressed air is sent into the cylinder, which rotates the winding cylinder via the rotor and unloads the hose. A winding device capable of automatically winding has been proposed.
(For example, see Utility Model Publication No. 38-25172.) As another example, (ii) a winding cylinder is set coaxially with a pulley driven by a prime mover, and a fixed An inner gear formed on the inner circumferential edge of the rotor integrally with the winding cylinder is meshed with a planetary gear circumscribed on the gear, and the pressure contact force thereof is adjustable on the outer circumferential edge of the brake wheel attached to the support shaft. After facing the brake shoe and pressing the brake shoe against the brake wheel with the appropriate pressure, when the spindle is driven by the prime mover, the rotating body rotates and the take-up drum is rotated in the same direction, automatically pulling the hose. A winding device capable of winding the winding material has also been proposed (for example, see Japanese Utility Model Publication No. 35-28664). When the valve is opened, a difference occurs in the pressure and flow rate of the compressed air flowing through the hole depending on the degree of traction of the tow string.
As a result, the rotational speed of the rotor slows down, and the winding of the hose by the winding cylinder becomes uneven, and there is a risk that the hose may be under tension when it is on the winding cylinder and relaxed when it is not. Furthermore, when a hose wound under such conditions is stretched, the ends of the hose may separate from the winding cylinder and become entangled with each other, causing problems in stretching.

In the case of (ii), depending on the degree of adjustment of the pressure contact force of the brake shoe against the brake wheel, the hose may be wound around the winding cylinder under normal conditions, or depending on the rotational speed of the winding cylinder. There are times when the hose is crushed, and there is no appropriate means to prevent such a situation from occurring, and the problem is that it is difficult to adjust the pressure force because the operator is forced to do something by his or her own hands. There is a point.

This idea was proposed in view of the above-mentioned problems, and its purpose is to constantly rotate the winding cylinder at a constant speed by switching the three-way switch of the operator. The present invention aims to provide an automatic hose winding device which is capable of winding up a hose in an orderly manner and which operates reliably and quickly.

[Means to solve the problem]

In order to achieve the above-mentioned object, the automatic hose winding device of this invention is equipped with a switch for opening and closing the liquid supply passage in the middle of a support shaft that supports the winding cylinder, and the opening and closing of the switch opens and closes the liquid supply passage. In an automatic hose winding device, the hose is equipped with an operating wheel coaxially with the winding cylinder and driven by a prime mover. A multi-stage cylindrical tube is formed with a through hole 43 through which a hose communicating with the hose to be rotated is formed, one end is integrally connected coaxially with the winding cylinder, and a protrusion is formed on a part of the outer periphery. The belt is rotatably fitted into the rotor and a sliding part adjacent to the protrusion, one side edge of which can freely approach and separate from the protrusion, and a belt is hung between the rotor and the drive wheel of the pump. an annular cylinder screwed onto an intermediate outer circumferential edge of a rotor; A return main body is fitted to the end portion and has a through hole w communicating with the hose in the center, and a connecting pipe communicating with the annular cylinder is assembled, and the return main body is rotatably fitted to the return main body. - A return fitting that is supported and has a through hole i that communicates with the through hole w, and that a through hole c that communicates with the connecting pipe is arranged in parallel with the through hole i;
Forming a through hole _h4 which is screwed onto one end of this reversing fitting and which sends liquid from the pump to the hose and communicates with the through hole i, and communicates with the through hole c;
It consists of a branch fitting in which communicating pipes with a three-way socket inserted in the middle are assembled in parallel, and when the three-way socket is intermittent, the rotor is clamped or separated between the protrusion of the working wheel and the annular piston. It can be rotated or stopped integrally with the winding cylinder.

〔Example〕

An embodiment of this invention will be described below with reference to FIGS. 1 and 2.

One end of the hose ₁ is connected to a discharge port (not shown) of a pump P driven by a prime mover M, for example, an engine or an electric motor, which is mounted inside a pair of opposing rectangular machine frames F ₁ and F 2 . 1
Insert the rear end (the left side is the front and the right side is the rear in Figure 1) into the serrated part a of the front part of the connecting piece 2 with the through hole _h2 , and insert the bulging part of the connecting piece 2. At the rear end of e, a branch fitting 4 with a through hole h ₄ is inserted through the gasket 3.
The front ends of the connecting pieces 2 are in contact with each other, and the rear parts of the connecting pieces 2 are screwed together to connect them together, and each of the pair of upright pieces v ₁ and v ₂ that are erected and arranged in parallel upwardly of the branch fitting 4 has a three-way joint. 5 attached to the upper end of the substantially inverted U-shaped communication pipes 6 and 7, and set them in the three-way socket 5 at the position indicated by the solid line (spray) or dotted line (hose winding) on the handle 8. It is installed if possible. A return fitting 9 in which a through hole c that communicates with the through hole b bored at the lower end of the upright piece v ₂ of the branch fitting 4 and a through hole i in the center are drilled in parallel back and forth.
Then, a return main body 10 having a space g at the rear and a through hole w communicating with the through hole i is rotatably covered and fitted via a ball bearing 11. A bag nut 12 screwed onto the rear end of the
The connecting piece 13 is loosely fitted and passed through the connecting piece 13, and the front end of the connecting piece 13 is brought back to fit and tightly fit on the tip of the main body 10, while the front end of the hose 14 is fitted and tightly attached to the rear serrated portion s, and this hose 14 is connected to the outer circumferential edge of the winding drum D by an appropriate connection means.
The tip is connected to a spray nozzle (not shown). The hose 14 is inserted into and loosely connected to the through hole 43 in the center of the rotor R, which is fixed by welding to the side plate 16 at the front end of the winding drum D and has a multi-stage cylindrical shape. is rotatably supported by a bearing 17 provided on the machine frame _F1 , and a flat sliding part k in the middle
The central boss u of the operating wheel 18, which is a driven pulley having a V-shaped groove j, is slidably fitted thereinto, and is opposed to the protrusion 19 of the rotor R so as to be able to move toward and away from it. An annular piston 20 that faces the front surface of the boss U so as to be able to come into contact with and separate from it is slidably and tightly fitted into a fitting groove t at the rear of an annular cylinder 21 that is screwed into the intermediate outer peripheral edge of the rotor R. A female thread is carved on the inner circumferential edge of a space W that communicates with the mating groove t through a small hole q, and a connecting fitting 22 is formed on the lower end with a male thread y that is screwed into the female thread, and a screw thread is provided above the return main body 10. Hose retainers 24 and 25 are placed on the upper ends of the connecting fittings 23 to be matched, respectively, and these hose retainers 24 and 25 are attached to the connecting pieces 22 and 23, respectively.
It is covered and held by cap nuts 26 and 27, which are screwed into the cap nuts 26 and 27, respectively. Further, a fixing bolt 28 is screwed together to connect the rotor R near the front end and the rear end of the return main body 10, and the connecting pieces 22 and 23 are connected to each other by a U-shaped connecting pipe. 29, and the hose guide 31 is connected to the guide plate 30 horizontally suspended and fixed near the tips of the machine frames _F1 and _F2 .
A grooved roller 33 is rotatably held between a pair of support plates 32, 32 which are rotatably placed above the hose guide 31, and the hose 15 is engaged with the groove of the grooved roller 33. By entering the hose 15
This is intended to facilitate smooth unwinding or winding up from the winding cylinder D. In the figure, 34 is Natsu, 35,
36, 37 are "O" rings, 38 is oil hole, 39
40 is a belt suspended between the working wheel 18 and the driving wheel 39; 41 is a spill pipe connected to the Z point of the three-way pot 5; 42 is a drive wheel such as a drive pulley driven by a prime mover M; is a back presser foot.

[Effect]

Since this device has the above-mentioned configuration, when the handle 8 is set to the position shown by the solid line in FIG. The operation causes liquid such as water in a liquid storage tank (not shown) to flow into the hose ₁ connected to the discharge port _. , flows into the hose 14 via the through hole i of the return fitting 9, the through hole w of the return body 10, and the connecting piece 13, and then flows into the hose 15 outside the winding drum D.
It is ejected from the spray nozzle at the tip to spray on crops, extinguish fires at fire sites, and clean the inner walls of sewer pipes.

Furthermore, when the liquid ejection from the spray nozzle ends or is temporarily interrupted, the communication pipes 6 and 7 are communicated with each other via the three-way socket 5 by switching the handle 8 from the solid line position to the chain line position in FIG. , when the liquid flowing inside the hose 1 flows into the connecting piece 2, a part of it flows from the communicating pipes 6, 7 to the through holes b,
It flows into the fitting groove t of the annular cylinder 21 through the space c, the space g, the connecting pipe 29, and the space W, and the annular piston 2
0 rearward, and by pressing and sliding the boss u of the working wheel 18 along the sliding part k of the rotor R with its rear end face to bring it into close contact with the projection part 19 of the rotor R.
The winding drum D, the working wheel 18, the rotor R, the annular cylinder 21, the connecting pipe 29, and the return main body 10 are integrally connected, and the working wheel 18 and the driving wheel 39 are connected together.
As the operating wheel 18 rotates, the hose 15, which has been extended in a long shape toward the spray nozzle, is automatically wound around the winding cylinder D by the running of the belt 40 suspended between the two. However, when winding up the lever, the hose 15
Since liquid is stored inside and maintains the bulging state, even if the hose 15 is gradually stacked on the winding cylinder D, there is no risk of the hose 15 inside being crushed or deformed, and the winding cylinder There is no fear that D itself will be crushed or deformed by the hose 15. On the other hand, the spraying action of the liquid that has flowed into the inside of the hose is stopped by setting a stopper (not shown) attached to the spray nozzle to a stop position.

After the hose 15 is wound around the winding cylinder D by a predetermined length, when the handle 8 is returned to the solid line position again, the communication pipe 7 communicates with the spill pipe 41 at point Z, so that the annular cylinder 21 is fitted. Since the liquid in the groove t flows out into the spill pipe 41 through the space W, the connecting pipe 29, the space g, and the through holes c and b, the annular piston 20
The pressing force on the working wheel 18 disappears, and the working wheel 1
8 and the rotor R are placed in a mutually free state, and although the working wheel 18 is always rotated by the belt 40, the rotor R stops rotating.

〔effect〕

According to this invention, (i) an operating wheel interlocked with the drive shaft of the pump on the prime mover side via a belt is attached to the sliding part adjacent to the protrusion of the rotor coaxially and integrally connected to the winding drum; An annular piston that is rotatably fitted and presses the operating wheel toward the protrusion is housed in the annular cylinder that is fitted to the rotor so that it can move forward and backward. Since the cross-sectional area of the cylinder is large, even if the hydraulic pressure inside the annular cylinder is small, a large pressing force can be obtained against the working wheel, and a large contact area with the working wheel can be obtained, so that the annular piston and In addition, the winding cylinder can be rotated reliably by tightly contacting the working wheel, and when pressing the annular piston toward the protrusion side against the constantly rotating working wheel, the annular cylinder has a circumferential surface. There is no fear that a force along the direction will be generated, the rotational force of the operating wheel can be smoothly transmitted to the rotor side, and the power on the prime mover side can be used for rotating the winding drum with almost no loss.

(ii) A reversing metal fitting with a through hole that is fitted into the end of the rotor and rotatably fitted and supported by the reversing main body to which a connecting pipe communicating with the annular cylinder is assembled, and this reversing Attached to one end of the fitting,
Since the three-way handle is interposed between the pump and the pump that can communicate with the annular cylinder through the through hole, the operator can rotate or rotate the winding cylinder by simply switching the three-way handle to a predetermined position with a small amount of force. The rotation of the hose can be stopped, and the hose can be wound up under uniform conditions at all times without being affected by the operator's efforts, making it easy for the operator to handle.

(iii) When the hose is not wound around the winding cylinder, the working wheel that rotates on the sliding part of the rotor has a large inertial force, so the working wheel is constantly rotated via the belt. The rotating shaft of the pump can be maintained in a smooth rotating state, and since the hose is always filled with liquid, the hose can be wound around the winding cylinder in a crushed state. I have no fear.

If a reversible electric motor for remote control is connected to the handle 8, the operator can easily rotate or stop the winding drum D by setting the handle 8 to a desired position while holding the spray nozzle. It is convenient to do so, and it is of course possible to manually rotate the handle 8 by holding the handle 8 directly as described above.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, and FIG. 1 is a vertical sectional view of the main part, and FIG. 2 is a perspective view of a power sprayer in which the proposed product is assembled. D... Winding drum, P... Pump, R... Rotor, c, h ₄ , i, w... Through hole, 4... Branch metal fitting,
5...Three-way pot, 6, 7...Communication pipe, 9...Return fitting, 10...Return main body, 14,15
... hose, 18 ... operating wheel, 19 ... protrusion,
20... Annular piston, 21... Annular cylinder, 29... Connecting pipe, 39... Drive wheel, 40...
Belt, 43...through hole.

Claims (1)

[Scope of utility model registration request] A switch for opening and closing the liquid supply passage is installed in the middle of the support shaft that supports the winding cylinder, and by opening and closing the switch, liquid is supplied and discharged from the liquid supply passage to the cylinder attached to the support shaft. , in the automatic hose winding device comprising an operating wheel coaxially with the winding cylinder and driven by a motor, the winding cylinder D
A through hole 43 is formed through which the hose 14 communicating with the hose 15 to be wound is inserted, and one end is integrally connected coaxially with the winding cylinder D, and a protrusion 19 is formed on a part of the outer periphery. The formed multi-stage cylindrical rotor R is rotatably fitted into the sliding part K adjacent to the protrusion 19, with one side edge facing the protrusion 19 so as to be able to move toward and away from the protrusion 19, and the pump P A working wheel 18, on which a belt 40 is suspended between the driving wheel 39, and an annular piston 20, which presses the other side edge of the working wheel 18 toward the protrusion 19, are slidably and tightly fitted together. an annular cylinder 21 screwed onto the intermediate outer periphery of the child R; fitted onto the end of the rotor R;
A return main body 10 is formed with a through hole w communicating with the hose 14 in the center and a connecting pipe 29 communicating with the annular cylinder 21 is assembled, and the return main body 10 is rotatably fitted and supported. A through hole i that communicates with the through hole w is bored, and a through hole c that communicates with the connecting pipe 29 is provided with a return fitting 9 arranged in parallel with the through hole i, and at one end of this return fitting 9. The hose 1 is screwed together and the liquid from the pump P is transferred to the hose 1.
4, a through hole _h4 is formed which communicates with the through hole i, and communicating pipes 6 and 7, which communicate with the through hole c and have a three-way socket 5 interposed in the middle, are assembled in parallel. The protrusion 19 of the operating wheel 18 and the annular piston 20 are
An automatic hose winding device in which the rotor R can be rotated or stopped integrally with the winding cylinder D by being clamped or separated from the winding cylinder D.