JPS6259031B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for controlling the drive of a hose winding drum in a hose winding machine for spraying agricultural chemicals, etc. The present invention relates to a control device for controlling.

For example, hoses used for spraying liquids such as chemicals and water in orchards, rice fields, vegetable gardens, etc. are often rolled up and rolled up to change the length of the hose as the spraying location changes frequently. The hose is wound on a hose winding machine that can be freely unrolled, and the hose is wound up or unrolled as necessary. The hose is equipped with a drum for winding up the hose.

An object of the present invention is to provide a novel winding/unwinding control device that can extremely easily control the winding/unwinding of a hose in a hose winding machine as described above. It is in.

The configuration of the winding/unrolling control device according to the present invention will be explained with reference to the illustrated embodiment.
As shown in Fig. 3, a winding drum 3 is rotatably mounted on a frame 1 formed by appropriately bending a pipe, supporting shafts 3a and 3b protruding from both sides through brackets 2 on both sides. , the above frame 1
A motor 5 is installed on the top via a bracket 4, and a pulley 6 of the motor 5 axis and a pulley 7 of the drum axis 3a are connected.
A belt 8 is wound between them so that the winding drum 3 can be rotated in the hose winding direction at an appropriate rotational speed, and the drum shaft 3a, A reciprocating feed screw 10 parallel to the winding drum 3b is rotatably mounted horizontally, and a drum shaft 3b is connected between the winding drum 3 and the feed screw 10.
Sprocket wheel 11 and screw 10 to be fitted to
A chain 13 is wound between the sprocket wheels 12 fitted on the bracket 3, and the chain 13 is interlocked and connected so that the reciprocating feed screw 10 is driven to rotate in synchronization with the bracket 3. A movable metal fitting 14 that can be moved laterally and reciprocated is provided, and a pair of guide rollers 16 and 17 are supported by a supporting rod 15 hanging from the movable metal fitting 14, and the hose H to be wound is moved between the guide rollers 16 and 16. , 17 and is guided onto the winding drum 3, the present invention is implemented as follows.

That is, as shown in FIGS. 4 and 6, the winding drum 3 includes a pair of opposing circular plate portions 3c on both sides;
A drum circumferential plate part 3d fixed to the circumferential surface of the circular plate part 3c, and a pair of opposing wheels 3e fixed to both ends of the drum circumferential plate part 3d for preventing the hose from protruding laterally. The drum shafts 3a, 3 are formed at the center of each circular plate portion 3c.
b is supported on the outer surface side of the portion 3c, and the drum shaft 3a has a rotating shaft 18 on the proximal end to which the pulley 7 is fitted and is rotated as the pulley 7 rotates, and the drum shaft 3a. or its circular plate portion 3c
The tube shaft 19 is fixed to the drum 3 and rotates the drum 3 as the drum 3 rotates, and is divided into a tube shaft 19 arranged concentrically with the rotating shaft 18. As shown in FIGS. 4 and 6, between the rotation shaft 18 and the tube shaft 19, a fixed shaft cylinder 20 on the rotation shaft 18 is provided with a key 21 so as to be slidable but not relatively rotatable. A meshing clutch 23 is interposed, which includes one meshing piece 23a formed at the end of the other rotating shaft cylinder 22 and the other meshing piece 23b formed at the end of the tube shaft 19. Both the engaging pieces 23a, 23 are moved by the action of the clutch spring 24 which biases the engaging piece 22 and therefore the engaging piece 23a toward the engaging piece 23b.
When the clutch 23 is engaged by engaging the clutch 23, the tube shaft 19 is connected to the rotating shaft 18, and the drum 3 is rotated in the direction in which the hose H is wound up. As shown in FIGS. 4-6, the meshing clutch 23 is a pair of shifters 26 that are fitted into shifter fitting grooves 25 formed on the circumferential surface of the rotary shaft cylinder 22, and are connected to the frame 1. It is designed to be cut by a shifter 26 fixed at the base end of the arm portion 26a to a rotary tube 30 on a fixed support shaft 29 extending over the upper left and right support plates 27, 28.
The following control device is provided to control the operation of the shifter 26 to control three rotations of the drum.

That is, as shown in FIG. 1, on one side of the winding drum 3 is an operating cylinder 31 which is pivotally supported to the frame 1 as will be described later.
The operation of the shifter 26 is controlled by this. More specifically, a hose _H1 connected to a power sprayer (not shown) is connected to the working cylinder 31 by opening into the cylinder 31 through a pipe joint 32 attached to the cylinder 31, and Another hose H ₂ that opens into the cylinder 31 is connected to the working cylinder 31 by another pipe joint 33 attached to the pipe 31, and the other end of the other hose H ₂ is led to the other drum shaft 3b and As shown in FIG.
The above-mentioned other hose H ₂ is connected to the base end of another hose H ₃ connected to the other end using the hollow drum shaft 3b to complete the drug supply path to the hose H. At the tip of the hose H, which is wound around the drum 3 and guided outward between the guide rollers 16 and 17, as shown in FIG.
A chemical spraying nozzle N equipped with an opening/closing tip C is installed as usual, but a fourth cylinder is installed in the actuating cylinder 31 which is inserted into the supply flow path of the sprayed chemical as described above. , 6, a piston 34 is provided, and the inside of the actuating cylinder 31 is divided into a fluid chamber R ₁ where the hose H ₁ opens and a fluid chamber where the hose H ₂ opens.
_{The fluid chambers R 1 and} R ₂ are designed to communicate with each other at the illustrated end of the minimum contraction stroke. The piston rod 35 supporting the piston 34 is connected to the cylinder 31.
It is extended outside. Near the free end of the piston rod 35, the left and right support plates 27,
A rotary cylinder 37 on a fixed support shaft 36 supported by a rotor 28 in parallel with the support shaft 29 is fitted with a ratchet wheel 38 on one side and a rectangular cam plate 39 on the other side. Of these, the ratchet wheel 38 is a ratchet wheel 40 supported rotatably around a pin 139 at the free end of the piston rod 35, and is driven by a torque spring (not shown) on the pin 139 as shown in FIG. Arrow A
The pawl 40a of the ratchet wheel 40 is constantly urged to rotate in the direction of the piston rod 35 and its rotation is prevented by the engagement of the locking step with the stopper pin 41 on the piston rod 35.
The ratchet wheel 38 is engaged with the ratchet wheel 38 so that it rotates in the direction of arrow B when the piston rod 35 moves to protrude.
is a cam plate 39 with its base end fixed to the rotating cylinder 30.
A flat cam surface 42 of a cam lever 42 that can extend in the direction
a is engaged with the periphery of the cam plate 39. As shown in FIGS. 4 and 6, the cam plate 39 has a flat cam surface 39a on its peripheral edge that is located at a small distance from the center line of the support shaft 36, and a flat cam surface 39a that is located at a large distance from the same center line. Three cam surfaces 39b are formed alternately along the circumferential direction, and the cam surfaces 39a, 39
b is the cam surface 4 of the cam lever 42 on the cam surface 39a.
2a is engaged, the shifter 26, which is interlocked and connected to the cam lever 42 through the rotating cylinder 30, assumes the illustrated position in which the dog clutch 23 is engaged, and conversely, from the illustrated state, the cam surface of the cam plate 39 39
When the cam surface 42a of the cam lever 42 is engaged with the cam surface 42a of the cam lever 42, since the height of the cam surface 39b is large, the cam lever 42 is rotated in the direction of arrow D in FIG. As a result, the rotating cylinder 30 is rotated by a considerable amount around the axis, and the shifter 26 is displaced in the direction of arrow E in FIG. 4, taking the posture shown in FIG. is set to separate from the engaging pawl 23b and disconnect the engaging clutch 23. As mentioned above, the pressure receiving area on the front side of the piston 34
S ₁ is an appropriate amount smaller than the pressure receiving area S ₂ on the back side of the piston 34, and the pin 39 at the end of the piston rod 35 is connected to the rotating cylinder 37 on the support shaft 36.
The rotating arm 43 whose base end is loosely fitted into the rotating tube 3
The actuating cylinder 31 is connected to the rotary cylinder 37 so that the distance between the axes is constant, and the actuating cylinder 31 is pivotally supported to the frame so as to be rotatable about the fulcrum 0 shown in FIG. During the protruding movement of the ratchet wheel 35, the pawl 40a of the ratchet wheel 40 engages the ratchet wheel 3 until it reaches almost the stroke end of the protruding movement.
8.

In addition, in FIGS. 4 and 6, 44 and 45 are seal members provided on the operating cylinder 31, respectively, and as shown in FIG. The bracket 2 is clamped and supported between the holding metal fittings, and the shaft support hole of the bracket 2 is fitted onto the drum shaft 3b against the holding metal fittings, and then the bracket 2 is tightened to the frame pipe 1 with a tightening band 45. fixed,
The sprocket wheel 11 is pulled out and fixed by the sprocket wheel 11, and the sprocket wheel 12 on the reciprocating feed screw 10 is similarly supported.
1 and 12 can be easily replaced to change the speed at which the movable hardware 14 is fed by the feed screw 10.

Next, to explain the operation, when the tip C of the nozzle N at the end of the hose H is in the open position and the chemical is being sprayed, the chemical sent from the pump of the power sprayer through the hose _H1 is activated. It is sent into the hose H via the inside of the cylinder 31, through the inside of the hoses H ₂ and H ₃ , and is sprayed from the nozzle N. In this state, the inside of the working cylinder 31 is sent from the pipe fitting 32 to the pipe fitting 33 direction. Dynamic pressure acts on the front surface of the piston 34, and the piston 34 assumes the retracting stroke end position shown in FIG. 4. In the state shown in FIG. 4, the cam surface 39a on the bottom side of the cam plate 39 is engaged with the cam surface 42a of the cam lever 42 as described above.
Therefore, the winding drum 3 is rotationally driven in the direction of winding up the hose H by the motor 5. In other words, in FIG. 4, a hose H having a nozzle N at the tip is wound up by the winding drum 3,
This shows the state in which spraying work is being performed.

If it is desired to switch from the state shown in FIG. 4 to a state in which the spraying operation is performed in a fixed position or is performed while the hose H is pulled out from the winding drum 3, the tip C of the nozzle N is temporarily stopped. At this time, since the flow of the drug in the working cylinder 31 is stopped, the piston 34 is caused to extend due to the difference between the pressure receiving areas S ₁ and S ₂ , and the piston rod 35 is moved to extend to the end of the extension stroke shown in FIG. I am forced to do it. In this case, the pawl 40a of the ratchet wheel 40, which is prevented from rotating by the stopper pin 41 as described above, rotates the ratchet wheel 38, thereby causing the rotary cylinder 37 to rotate around the axis. The cam plate 39 rotates in the direction of arrow B in FIG. 4, and the higher cam surface 39b of the cam plate 39 comes into engagement with the cam surface 42a of the cam lever 42.

Note that when the piston rod 35 is extended to a certain extent, the pawl 40a of the ratchet wheel 40 comes off the ratchet wheel 38 as shown in FIG. 6, but after the cam plate 39 has been rotated a certain amount. , the rotating cylinder 37 cannot rotate in the opposite direction due to the relative positional relationship between the cam surface 39b and the cam surface 42a, and as a result, the cam surface 39b and the cam surface 4 as shown in FIG.
An engaged state between 2a is obtained. Note that by changing the fulcrum 0 position of the operating cylinder 31, the cam surface 39
It is also possible to keep the pawl 40a engaged with the ratchet wheel 38 until the engagement state between b and 42a is reached.
It is possible. At this time, the rotating barrel 30 is rotated around the axis via the cam lever 42 as described above, and the shifter 26 is moved by the arrow E in FIG.
When the shifter 26 is displaced, the engaging claw 23a is separated from the engaging claw 23b as shown in FIG. 6, and the engaging clutch 23 is disengaged. In this state where the clutch 23 is disengaged, the winding drum 3 can be freely rotated in the direction of winding out the hose H, so in the state shown in FIG. Nozzle N position can be changed. In this state, the next pawl of the ratchet wheel 38 has been brought to the pawl 40a engagement position shown in FIG.

When the nozzle C of the nozzle N is brought to the open position again from the state shown in FIG. As shown by the phantom line in FIG. 6, the piston rod 35 is reduced to the end of the reduction stroke.

However, at this time, the ratchet wheel 40 at the tip of the piston rod 35 rotates slightly against the action of the torque spring on the pin 139 and contracts while avoiding the ratchet wheel 38 or its pawl, so the ratchet wheel 38 is not allowed to rotate. Unable to do so, cam plate 3
8 cam surface 38b and the cam surface 42 of the cam lever 42
The engaged state between a and a continues, and this engagement restricts the action of the clutch spring 24, so that the engagement piece 23a remains in the position shown in FIG.
The cut state persists. Therefore, in the state shown by the imaginary line in FIG. 6, based on the clutch 23 disengagement,
Spraying work can be performed at a fixed position or while moving while unrolling the hose H.

Next, from the state shown in the imaginary line in Figure 6, Kotoku C
When the drug flow in the actuating cylinder 31 is stopped by closing, the piston 34 moves to extend again based on the pressure receiving area difference S ₁ and S ₂ as described above, and the piston rod 3
At this time, the pawl 40a of the ratchet wheel 40 at the tip of the piston rod 35 pushes the ratchet wheel 38 and rotates it in the direction of arrow B in FIG. 39a engages with the cam surface 42a of the cam lever 42, the cam lever 42 moves in the direction of arrow D in FIG.
The shifter 26 is rotated in the direction shown in FIG.
is rotated in the opposite direction of arrow E in Figure 4,
The meshing piece 23a is brought into engagement with the meshing piece 23b, and the meshing clutch 23 is engaged. Therefore, in this state, the spraying operation must be stopped and the hose H
can be wound up on the winding drum 3. When the cock C is opened again from this state, the piston 34 and the piston rod 35 contract due to the dynamic pressure on the front surface of the piston 34. At this time, the ratchet wheel 38 is not rotated and the cam surface 3
The engaged state of the clutch 23 is maintained by the engagement between 9a and 42a and the action of the clutch spring 24, eventually returning to the state shown in FIG. 4.

As described above, according to the winding/unwinding control device shown in FIGS. 1-6, the spraying work is performed while winding the hose H.

Move from place to place while letting out the hose H while stopping the spraying work.

While rolling out the hose H and moving from place to place,
Alternatively, perform the spraying work at a fixed location.

Wind up the hose H while stopping the spraying work.

The following four operations can be performed simply by the operator holding the nozzle N operating the tip C.

The structure and operation of the winding/unwinding control device in the hose winding machine according to the present invention have been described above with reference to one embodiment, but it goes without saying that various modifications can be made within the scope of the present invention. Yes, some examples are shown below.

First, in the above embodiments, according to the present invention,
As an operation that is displaced by the flow and stoppage of liquid, the double-acting type actuating cylinder 3 as described above is used.
1 to a piston 34 are provided, however, even when an operating cylinder is provided in this manner, a single-acting type operating cylinder 31' can be used as shown in FIG. That is, the single-acting type actuating cylinder 31' shown in FIG. In the state in which is flowing, the dynamic pressure on the front surface of the piston 34' is due to the force of the spring 50, and the piston 34' takes the contracted position, and conversely, the cylinder 3
When the liquid flow in the piston 1' is stopped, the force of the spring 50 is applied to the liquid pressure acting on the front surface of the piston 34', so that the piston 34' assumes an extended position.

Further, in the above embodiment, the clutch 23 is used to start and stop driving the winding drum 3, but the driving of the winding drum 3 may be started and stopped by a switch. 8 and 9 respectively show such embodiments, and the one shown in FIG. 8 has a rotary lever 42' corresponding to the cam lever 42.
Switch SW ₁ is installed oppositely to the rotary lever 4.
The switch 2' corresponds to the cam lever 42 and is displaced between two positions to open and close an electromagnetic clutch (not shown) for engaging and disconnecting the drive of the drum 3.
It is configured to turn SW ₁ on and off. Further, the one shown in FIG. 9 is provided with a rotary switch SW ₂ having a rotor 39' corresponding to the cam plate 39 coaxially with a ratchet wheel (not shown) corresponding to the ratchet wheel 38, and Positions 39a and 39b are set to ON and OFF respectively, and this rotary switch SW ₂
An electromagnetic clutch (not shown) for turning on and off the drive of the drum 3 is turned on and off by this.

When the switches SW ₁ and SW ₂ are provided as described above, the motor 5 and the winding drum 3 are interlocked and connected without using a clutch mechanism, and power is supplied to the motor 5 by the switch SW ₁ or SW ₂ . It is also possible to control the start and stop of the winding drum 3 by starting and stopping the drive of the motor 5.

Furthermore, in the above embodiment, a special mode, that is, a control mechanism that can operate in the four ways described above, was adopted, but for example, when spraying liquid, the drum 3 drive is stopped so that the hose H can be freely moved, It can also be used as a control mechanism that controls moving the hose H in a wide backward direction or stopping the spraying work when the work is completed and winding up the hose H by driving the drum 3.
In such a case, an actuating body as shown in FIG. 10, for example, may also be used. That is,
The switch SW ₃ shown in FIG. 10 includes a rotatable movable contact 60 having a pressure-receiving vane 60a facing into the liquid flow path and a fixed contact 61 disposed opposite to the movable contact 60. Contact 60 is spring 6
2, the movable contact 60 is energized in the direction of contact with the fixed contact 61, and when liquid flows, the movable contact 60 is separated from the fixed contact 61 by the dynamic pressure applied to the pressure receiving vane 60a, and the contact between the contacts 60 and 61 is By turning the switch SW ₃ on and off by separating the drum 3 and the drum 3, it is possible to control the turning on and off of the electromagnetic clutch for driving the drum 3 or the starting and stopping of the motor 5.

As is clear from the above description, the present invention provides a hose winding machine for winding up a hose H for liquid spraying, in which the flow of the liquid is stopped by opening and closing the tip C of the nozzle N equipped at the tip of the hose H. An actuating body 34, 34', 60a is provided which can be displaced between a first position when receiving the dynamic pressure of the liquid flow and a second position when the dynamic pressure is released. It is connected to a clutch or switch that starts and stops the drive of the hose winding drum 3, and is configured to control the drive of the hose winding drum by the displacement of the actuating body. The drive control of the hose winding drum and therefore the winding and unwinding of the hose can be controlled by the remote control for opening and closing the cock C of the nozzle N, and the control of the hose winding and unwinding is made extremely easy. Increase work efficiency.

According to one embodiment of the present invention, a cam means is provided which alternately engages and closes the aforementioned clutch or switch by intermittent displacement along one direction, and the cam means is connected to the actuating body via the one-way clutch. When linking in conjunction with
The above-mentioned advantages are greatly enhanced as four types of operation control can be performed using the remote control described above.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a hose winding machine equipped with an embodiment of the present invention, Fig. 2 is a rear view of the same hose winding machine, Fig. 3 is a side view of the same hose winding machine, and Fig. 4 is a side view of the same hose winding machine. is an enlarged longitudinal sectional side view of the main part, Fig. 5 is a cross-sectional plan view of the main part, and Fig. 6 is an enlarged view showing a part of Fig. 4, showing a different state from Fig. 4. , FIG. 7 is a vertical cross-sectional side view showing a modification of the main part, FIGS. 8 and 9 are cross-sectional plan views showing other modifications of the main part, and FIG. 10 is a cross-sectional side view showing a modification of the main part of another embodiment. It is a schematic diagram. H... Hose, 3... Winding drum, 23...
Mesh clutch, 26...shifter, 31...operating cylinder, 34...piston, 35...piston rod, 38...ratchet wheel, 39...
...Square cam plate, 40...Rawl wheel, 42...Cam lever, 31'...Single-acting operating cylinder, 42'...Rotating lever, SW ₁ ...Switch, 39'...Rotor, SW ₂ ... Rotary switch, 60...movable contact, 60a...pressure receiving vane, 61...fixed contact,
SW ₃ ...Switch.

Claims (1)

[Scope of Claims] 1. In a hose winding machine for winding up a hose H for liquid spraying, the dynamic pressure of the liquid flow is reduced by the flow of the liquid and the stoppage of the flow by opening and closing the tip C of the nozzle N equipped at the tip of the hose. An actuating body is provided that is displaced between a first position when the dynamic pressure is applied and a second position when the dynamic pressure is released, and the actuating body is connected to a clutch or switch that starts and stops driving the hose winding drum 3. A winding/unwinding control device for a hose winding machine, which is connected to a hose winding drum and configured to control driving of a hose winding drum by displacement of the actuating body. 2. A cam means is provided which alternately engages and closes the aforementioned clutch or switch by intermittent displacement along one direction, and this cam means is interlocked and connected to the operating body via a one-way clutch.
A winding/unwinding control device for a hose winding machine according to claim 1.