JPH0435336Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an automatic hose winding device used for automatically winding up a spraying hose, etc. in a chemical spraying machine or the like.

[Conventional technology]

In an automatic hose winding device, a hose is wound around a rotatably supported hose winding drum, and the hose is pulled out from the hose winding drum.However, in conventional automatic hose winding devices, the hose is wound on a rotatably supported hose winding drum, and the hose is pulled out from the hose winding drum. No particular device was provided to prevent it from coming apart.

[The problem that the idea aims to solve]

Therefore, if the hose is pulled out forcefully, the hose take-up drum may continue to rotate due to inertia even after the hose has been pulled out, or if the spraying pot is opened or closed during pest control work, the internal pressure of the hose may change rapidly. The hose winding drum sometimes rotated, causing the hose to come loose. If the hose comes loose, it may lead to an accident or malfunction due to the hose coming into contact with the operating part, and it may also interfere with automatic winding work. You will be forced to go through extra trouble such as having to fix the problem.

The purpose of this invention is to provide an automatic hose winding device that can prevent the hose from coming loose.

[Means to solve the problem]

The automatic hose winding device according to this invention includes a sensor arm that tilts as the hose is pulled out, a limit switch that detects the tilting of the sensor arm, and a hose winding drum that winds the rotatably supported hose. A brake that restrains the rotation of the hose winding drum by a frictional force, a brake arm that is swingably supported and to which the brake is attached, and a brake that is controlled by the limit switch and is in an unrestricted position when the hose is pulled out and when the hose is not pulled out. and an operating means for operating the brake arm to bring it into the restraint position.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

4 and 5 show a chemical sprayer 2 equipped with an automatic hose winding device along with its connections. A spray nozzle 6 is connected to the tip of the spray hose 4, and an operator 8 At the same time, the spraying handle 10 is operated to control the supply of the chemical solution from the spraying hose 4 to the spray nozzle 6. The chemical liquid in the chemical tank 12 is passed through a strainer 14 and a water absorption hose 1.
The chemical liquid that is sucked into the power sprayer 20 through the power sprayer 6 and not sent from the power sprayer 20 to the spray hose 4 is returned to the medicine tank 12 through the spill water hose 22.

FIG. 1 is a detailed perspective view of the chemical sprayer 2. FIG.
A pair of wheels 26 are rotatably attached to the lower part of one side of the frame 24, and an engine 28 is started by operating a start key 30 and is used as a power source for the power sprayer 20. Charge 32. The hose winding drum 34 is rotatably supported by the frame 24, and the hose automatic alignment winding device 36 is fixed to the frame 24 above the hose winding drum 34. The hose winding head 38 is fixed to the upper part of the hose guide section 40 of the hose automatic alignment and winding device 36, and the sensor arm 42 is connected to the guide roller 4 that guides the spraying hose 4.
4 is rotatably supported and tiltably supported by the hose winding head 38. Tension coil spring 46
are hooked at both ends to the hose winding head 38 and the upper part of the sensor arm 42, respectively, to hold the sensor arm 42 in the upright position. The limit switch 48 is fixed to the side of the hose winding head 38 and has a switch actuating head 50 that can abut the sensor arm 42. The brake arm 52 is rotatably supported by the frame 24 at one end, and has a cylindrical rubber 54 as a brake friction material fixed at the other end. A tension coil spring 56, which is a biasing means, is hooked at both ends to the other end of the brake arm 52 and the frame 24, and moves the brake arm 52 in a direction in which the cylindrical rubber 54 is pressed against the side plate of the hose winding drum 34.
energize. The solenoid 58 is fixed to the frame 24 via a bracket 60.
The tip of the push rod is locked to a brake arm 52. Lead wire 64 connects battery 32, limit switch 48, and solenoid 58.

2 and 3 show the positions of elements such as the sensor arm 42 when the spraying hose 4 is being pulled out from the hose winding drum 34 and when the spraying hose 4 is not being pulled out, respectively. The operation of the embodiment will be explained with reference to FIG.

In Figure 2, the spray hose 4 is connected to the hose take-up drum 3.
It is drawn from 4. Since there is resistance when the spraying hose 4 is pulled out from the hose take-up drum 34, the sensor arm 42 is tilted against the tension coil spring 46 as the spraying hose 4 is pulled out, so that the sensor arm 42 is tilted to an inclined position. leaves the switch actuating head 50, and the limit switch 48 is turned on. As a result, the solenoid 58 becomes energized, the push rod 62 is pushed up to swing the brake arm 52, and the cylindrical rubber 54 separates from the side plate periphery of the hose winding drum 34. As a result, the hose winding drum 34 becomes in a rotating state, and the spraying hose 4 is smoothly pulled out from the hose winding drum 34.

In FIG. 3, the spraying hose 4 is not pulled out from the hose winding drum 34. Since no force is exerted on the sensor arm 42 from the spray hose 4 to tilt the sensor arm 42, the sensor arm 42 is held in an upright position by the tension coil spring 46, and the sensor arm 42 abuts the switch actuation head 50, causing the limit switch to be activated. 48 is turned off. As a result, the solenoid 58 is de-energized, and the brake arm 52 is moved by the tension coil spring 56.
The cylindrical rubber 54 swings toward the hose winding drum 34 , and the cylindrical rubber 54 is pressed against the side plate periphery of the hose winding drum 34 .
is restricted from rotation. Therefore, immediately after the spraying hose 4 is pulled out forcefully and the drawing is finished, and when the internal pressure of the spraying hose 4 changes suddenly due to the operator 8 operating the spraying pot 10, the dispersion of the spraying hose 4 is prevented. be able to.

[Effect of idea]

As described above, according to this invention, the limit switch detects the withdrawal of the hose from the tilting of the sensor arm, and the operating means (in the embodiment, the tension coil spring 56 and the solenoid 58) controlled by the limit switch operates the brake arm. A brake attached to the hose restrains the rotation of the hose winding drum when the hose is being pulled out, and releases restraint on the rotation of the hose winding drum when the hose is not being pulled out. Therefore, even when the hose is not being pulled out, the hose winding drum can be prevented from freely rotating and the hose can be prevented from unraveling, which can be useful for preventing accidents and breakdowns and improving work efficiency.

[Brief explanation of the drawing]

The drawings show a chemical sprayer to which this invention is applied. Figure 1 is a perspective view of the chemical sprayer, and Figures 2 and 3 show elements such as the sensor arm when the spray hose is pulled out and when it is not pulled out, respectively. FIG. 4 is a diagram showing how the chemical sprayer is used for pest control work, and FIG. 5 is a diagram showing the connection relationship between the chemical sprayer and the chemical tank. In the figure, 4...dispersion hose, 34...hose winding drum, 42...sensor arm, 48...
Limit switch, 52... Brake arm, 5
4... Cylindrical rubber (brake), 56... Tension coil spring (operating means), 58... Solenoid (operating means).

Claims (1)

[Claims for Utility Model Registration] (1) A sensor arm that tilts as the hose is pulled out, a limit switch that detects the tilting of the sensor arm, and a hose winding drum that is rotatably supported and winds up the hose. a brake that restrains the rotation of the hose winding drum by a frictional force; a brake arm that is swingably supported and to which the brake is attached; and a brake that is controlled by the limit switch so that the brake is activated when the hose is pulled out and when it is not pulled out. An automatic hose winding device comprising an operating means for operating the brake arm so that the brake arm is placed in a non-restricted position and a restricted position, respectively. (2) The operation means includes a biasing means for biasing the brake arm so that the brake is pressed against the hose winding drum, and a biasing means for biasing the brake arm so that the brake is pressed against the hose take-up drum, and a biasing device that is controlled by the limit switch so that the brake is not pressed against the hose when the hose is being pulled out. The automatic hose winding device according to claim 1, further comprising a solenoid for moving the brake arm away from the winding drum.