JPH0333736Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a hose winding device for winding up a spraying hose used, for example, when spraying agricultural chemicals.

[Conventional technology]

In a power sprayer set equipped with a hose winding device for winding up a spraying hose that guides pesticides to a spray nozzle at the tip, the length of the spraying hose usually reaches 100 to 150 meters. When pulling out the spraying hose from the hose reel of the hose winding device, the operator holding the spray nozzle pulls out the spraying hose manually, and when winding the spraying hose onto the hose reel, the operator waits near the power sprayer set. The other worker closes the tension clutch, rotates the hose reel, and winds the spray hose onto the hose reel using engine power.

Conventional hose winding device (eg.
No. 3), no restraining means was specifically provided to restrain the rotation of the hose reel. Therefore, even when the operator is not pulling the spray hose, the hose reel rotates, and in order to finish winding the spray hose, the tension clutch is switched from engaged to disengaged, and the hose reel is removed from the engine. Even if the power is cut off, the hose reel will continue to rotate for a while due to inertia. There is therefore a risk that the spray hose may come loose from the hose reel or become entangled with other components of the power sprayer set, causing damage and accidents.

To prevent such harm, when the operator is pulling the spray hose out from the hose reel, the mechanical restraint means should be removed from the hose reel so that the hose reel can rotate.
In other cases, a hose winding device has been proposed that presses a mechanical restraint means against a hose reel to prevent rotation of this restraint means (for example, Utility Model Application No. 1983-
No. 88524). In a hose winding device having such a mechanical restraint means, a movement means is provided which operates a limit switch by mechanically moving as the spray hose is pulled out in order to detect when the spray hose is pulled out and when it is not pulled out. It is necessary to provide
In the proposed device, such a moving means is disposed on the outlet side of the head, which is rotatably supported in the circumferential direction and is provided as an element of the automatic hose aligning and winding device.

[The problem that the idea aims to solve]

Since the limit switch and the mechanical restraint means must be connected by a wire harness or the like, the above-mentioned hose winding device with the mechanical restraint means
The rotation of the head is limited to approximately 180° or less by connection lines such as a wiring harness.

The object of this invention is to provide a hose winding device that can detect when the hose is being pulled out and when it is not being pulled out and can control the mechanical restraint means without causing any hindrance to the rotation of the head.

[Means to solve the problem]

The hose winding device according to this invention includes (1) a hose reel 44 that is rotatably supported by a frame 34 and around which the spray hose 14 is wound;
4 is fixed to the frame 34 above the
A movable base 47 that can reciprocate over the entire axial width of the hose reel 44 in conjunction with the rotation of the hose reel 44, and a pull-out roller 50 on which the spray hose 14 is hung are rotatably supported. A head 48 is installed above the movable table 47.
In the hose winding device, the head 48 is rotatable in the entire circumferential direction with respect to the movable base 47, and a swing arm 66 is provided below the movable base 47. The biasing roller 70 is rotatably supported through the biasing roller 70, and the dispensing hose 14, which is routed from the hose reel 44 to the pull-out roller 50 through a guide tube 62 formed on the movable table 47, is biased. A biasing means 72 for pressing the roller 70, a detection means 74 that is activated as the swinging arm 66 is swung against the biasing means 72 when the spray hose 14 is under tension, and the detection means 74 and an electromagnetic restraint means 80 for braking the hose reel 44.

[Effect]

When the spraying hose is not pulled out, no tension is applied to this hose, so no biasing force is applied from the part of the spraying hose between the head and the hose reel to the contact means, and the swing arm is moved by the biasing roller. is swung by the biasing means to a swiveling position where the hose is bent significantly. The detection means that comes into contact with the swinging arm to detect the swinging position of the swinging arm detects this swinging position of the swinging arm, and the electromagnetic restraint means electromagnetically restrains the hose reel based on the output of the detection means. Constrain rotation. This prevents the spray hose from coming loose from the hose reel, loosening the winding of the hose on the hose reel, and preventing the loose hose from getting caught in surrounding components.

When the spraying hose is withdrawn, it is under tension, and in the area between the head and the hose reel it is substantially straight and exerts a large biasing force on the contact means. This causes the swing arm to swing against the biasing means into another swing position. In this way, the detection means detects this other swinging position of the swinging arm, and the restraint means releases the restraint of the hose reel based on the output of the detection means, so that the hose reel rotates and the hose is pulled out from the hose reel. It can be done.

〔Example〕

This invention will be described below with reference to embodiments shown in the drawings.

FIGS. 7 and 8 show a power sprayer set 12 equipped with an automatic hose winding device along with its connection relationship. The tip of the spray hose 14 is connected to a spray nozzle 16, and the operator 18 1
6 and operates the spraying pot 20 to control the supply of chemical liquid from the spraying hose 14 to the spray nozzle 16. The chemical liquid in the chemical tank 22 is sucked into the pump 30 through the strainer 24 and the water suction hose 26, and the chemical liquid that has not been sent from the pump 30 to the spray hose 14 is returned to the chemical tank 22 through the spill water hose 32. Tension clutch lever 33 (8th
) is manually operated to control the connection/disconnection of power transmission from the engine 38 to the pump 30. There is also a power sprayer set in which, instead of using the tension clutch lever 33, an operator who holds the spray nozzle 16 remotely controls the connection/disconnection of power transmission from the engine 38 to the pump 30 wirelessly.

FIG. 6 is a detailed perspective view of the power sprayer set 12. A pair of wheels 36 are rotatably attached to the lower part of one side of the frame 34, and an engine 38 is started by operating a start key 40 and is used as a power source for the pump 30. to charge. hose reel 44
is rotatably supported by the frame 34, and a hose automatic aligning and winding device 46 of a known structure is fixed to the frame 34 above the hose reel 44. The movable base 47 of the automatic hose alignment and winding device 46 rotates the hose reel 4 in conjunction with the rotation of the hose reel 44.
The head 48 is erected on a movable table 47 so as to be rotatable in the circumferential direction in accordance with the direction in which the spray hose 14 is fed out. The pull-out roller 50 is rotatably supported by the head 48 and has the spray hose 14 wound around it. The brake arm 52 is rotatably supported by the frame 34 at one end, and has a cylindrical rubber 54 fixed thereto as a friction material of the restraining means at the other end. The tension coil spring 56 is connected at both ends to the other end of the brake arm 52 and the frame 34, respectively.
The brake arm 52 is urged in a direction in which the cylindrical rubber 54 is pressed against the peripheral edge of the side plate of the hose reel 44. The solenoid 58 is fixed to the frame 34 via a bracket 60, and the tip of the push rod of the solenoid 58 is connected to the brake arm 5.
It is locked to 2.

4 and 5 show the main parts of the embodiment of FIG. 6 in detail in the state of each component when the hose is not drawn out and when it is pulled out, respectively. It is fixed and supported by a movable table 47 so as to be rotatable over 360 degrees in the circumferential direction. The spraying hose 14 from the hose reel 44 passes through the guide tube 62, is wound around the rollers 50, and is let out to the outside. The bracket 64 is fixed to the lower surface of the movable base 47 so as to project downward from the lower surface, and the swing arm 66 is swingably supported by the bracket 64 via a pin 68. The biasing roller 70 is rotatably supported by the end of the swing arm 66 on the side of the spraying hose 14, and the spraying hose 14 is fitted into the groove. A tension spring 72 as a biasing means is latched at both ends to the upper side of the bracket 64 and to the swinging arm 66, respectively, and the biasing roller 70 bends the spraying hose 14 in the area between the hose reel 44 and the head 48. Swing arm 66 in the direction
The swing arm 66 is urged so that it swings. A limit switch 74 serving as a detection means is fixed to the lower surface of the movable base 47 and can come into contact with the other end of the swing arm 66. The wire harness 76 connects the terminal of the limit switch 74 to the battery 42 and the solenoid 58.
and limit switch 74 form a closed loop circuit.

In the embodiments shown in FIGS. 4, 5, and 6, the electromagnetic restraint means for restraining the rotation of the hose reel 44 includes a cylindrical rubber 54 as a friction material and a cylindrical rubber on the side plate of the hose reel 44. Although the example includes a solenoid 58 that controls the approach and separation of the first
In the alternative embodiment of FIGS. 2 and 3, an electromagnetic brake 80 was used as the electromagnetic restraint means.
That is, FIGS. 1 and 2 are side views showing in detail the main parts of the hose winding device in which the electromagnetic brake 80 is used as an electromagnetic restraint means, in the state of each component when the hose is not pulled out and when the hose is pulled out, respectively. FIG. 3 is a diagram showing the hose reel 44 from the outside in the radial direction in the example of FIGS. 1 and 2. The electromagnetic brake 80 forms a closed loop circuit with the battery 42 and the limit switch 74, and is connected to the frame 34 via the mounting bracket 82.
is attached to. In installing the electromagnetic brake 80, the mounting bracket 82 is fixed to the frame 34 at one end via a bolt 84 and a nut 86, and the shaft 88 of the electromagnetic brake 80 is coupled to the shaft 90 of the hose reel 44 so as to be integrally rotatable.
When the electromagnetic brake 80 is not energized, the rotation of the shaft 88, that is, the hose reel 44 is restricted, and
When the electromagnetic brake 80 is energized, the shaft 88, that is, the hose reel 44, is in a state where it can freely rotate.

The operation of the embodiment will be explained.

The worker 18 attaches the spray hose 14 to the hose reel 4.
When not pulling out from 4 (Figures 1 and 4),
Since no tension is applied to the spray hose 14, the spray hose 14 can be bent easily in the area between the hose reel 44 and the head 48. As a result, the swinging arm 66 swings by the biasing force of the tension spring 72 to the swinging position where the biasing roller 70 bends the spraying hose 14 . As a result, the end of the swinging arm 66 on the anti-biasing roller 70 side is held away from the limit switch 74, and the limit switch 74 is
OFF, and the electromagnetic brake 80 or solenoid 58 is in a non-energized state. When the electromagnetic brake 80 is de-energized, the hose reel 44 is directly restricted from rotating. Further, when the solenoid 58 is de-energized, the brake arm 52 is swung by the tension coil spring 56, and the cylindrical rubber 54 is pressed against the peripheral edge of the side plate of the hose reel 44, so that the hose reel 44 is restrained from rotating.

The operator 18 attaches the spray hose 14 to the hose reel 4.
4 (FIGS. 2 and 5), the spray hose 14 is under tension so that the spray hose 14 is substantially straight in the area between the hose reel 44 and the head 48. As a result, the swinging arm 66 swings against the tension spring 72, and the end of the swinging arm 66 on the side opposite to the biasing roller 70 comes into contact with the limit switch 74.
turns on. As a result, the electromagnetic brake 80 or the solenoid 58 becomes energized. The energized state of the electromagnetic brake 80 makes the hose reel 44 freely rotatable. Further, when the solenoid 58 is energized, the push rod of the solenoid 58 rises, the brake arm 52 swings against the tension coil spring 56, the cylindrical rubber 54 separates from the periphery of the side plate of the hose reel 44, and the hose reel 44 Rotation is allowed. The hose reel 44 thus rotates and the spray hose 14 is pulled out from the hose reel 44.

[Effects of the invention] As described above, according to this invention, attention is paid to the fact that tension is applied to the hose when the hose is pulled out from the hose reel, and the tension of the hose in the range between the hose reel and the head is reduced. The swinging arm is caused to swing in relation to the above, and the swinging position of the swinging arm is detected by the detection means. Therefore, the swinging arm does not rotate with the head, and the head
It can rotate over a range of 360° or more without any problems.

In this invention, the biasing roller only needs to come into contact with the hose and does not brake the movement of the hose during tensioning, so the force required to pull out the hose from the hose reel can be reduced.

[Brief explanation of the drawing]

The drawings relate to an embodiment of this invention, and Figures 1 and 2 show the main parts of a hose winding device in which an electromagnetic brake is used as an electromagnetic restraint means, and show the states of each element when the hose is not pulled out and when the hose is pulled out, respectively. Figure 3 is a side view shown in detail in Figure 1 and Figure 2.
In the illustrated example, the hose reel is shown from the outside in the radial direction, and FIGS. 4 and 5 show the main parts of the hose winding device equipped with electromagnetic restraint means including a solenoid when the hose is not pulled out and FIG. 6 is a perspective view showing the entire power sprayer set equipped with the hose winding device according to the embodiment; FIG. 7 is a diagram showing the power sprayer set during pest control work. FIG. 8 is a diagram showing the connection between the power sprayer set and the medicine tank. 14...Spraying hose, 44...Hose reel,
48... Head, 54... Cylindrical rubber, 58...
Solenoid, 66... Swinging arm, 70... Biasing roller, 72... Tension spring (biasing means), 74...
... limit switch (detection means), 80 ... electromagnetic brake (electromagnetic restraint means).

Claims (1)

[Claims for Utility Model Registration] (1) A hose reel 44 rotatably supported by the frame 34 and around which the spray hose 14 is wound; A movable base 47 that can reciprocate over the entire axial width of the hose reel 44 in conjunction with the rotation of the hose reel 44.
The movable base 47 rotatably supports the pull-out roller 50 on which the spray hose 14 is hung.
In a hose winding device including a hose automatic aligning and winding device 46 including a head 48 erected above, the head 48 is rotatable in the entire circumferential direction with respect to the movable base 47, and the head 48 is rotatable in the entire circumferential direction with respect to the movable base 4
A biasing roller 70 is rotatably supported via a swing arm 66 below the hose reel 44 and a guide tube 62 formed on the movable table 47 is connected to the pull-out roller 50 . A biasing means 72 that presses the biasing roller 70 against the spraying hose 14 is activated as the swinging arm 66 is swung against the biasing means 72 when the spraying hose 14 is under tension. detection means 74, and this detection means 74.
and an electromagnetic restraint means 80 that brakes the hose reel 44 in conjunction with the hose reel 44. (2) The detection means 74 is a limit switch that can come into contact with the end of the swing arm 66 on the side opposite to the side on which the urging roller 70 is attached. Hose winding device as described. (3) The hose winding device according to claim 1 or 2, wherein the electromagnetic restraint means 80 is an electromagnetic brake. (4) The electromagnetic restraining means 80 includes a friction material 54 that can be brought into contact with and separating from the hose reel 44, and a friction material 54 that controls the hose reel 44 based on the output of the detection means 74.
The hose winding device according to claim 1 or 2, characterized in that the hose winding device includes a solenoid 58 for controlling contact and separation of the friction material 54 from and to the hose.