JP3696615B1 - Drawer device and remotely operated hose reel device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drawer device that automatically and reliably stops the supply of drawing power by a drawing power supply means when a drawing object reaches a drawing limit from a winding frame.
SOLUTION: A base end portion 7a is connected to a reel 8 and a drawer object 7 wound around the reel 8 is pulled out from the reel 8 by power supplied from drawer power supply means 17 and 36. the device 14, the load a is automatically the supply of the power from the drawer power supplying means 17, 36 when the state exceeds a predetermined level L has continued for the predetermined period of time t ₂ to the drawer power supply means 17, 36 Control means 30 for stopping is provided.
[Selection] Figure 2

Description

  The present invention relates to a drawer device for pulling out a drawing target wound with a base end connected to a winding frame from the winding frame using power. The present invention also relates to a remotely operated hose reel device including the drawer device.

  As an example of a machine equipped with a remotely operated hose reel device, a remotely operated set moving jet for spraying liquid such as agricultural is known. The moving jet is equipped with a hose reel, a pump, a receiver, and the like mounted on a stationary body during work, and the hose reel, the pump, etc. can be remotely operated via the receiver by a portable transmitter. (See Patent Document 1). The hose is connected to the hose reel with a base end portion thereof wound around the hose reel as a winding frame, and a hand-held spraying basket having a spray nozzle is connected to a leading end portion of the hose. The hose reel is idled when the hose is pulled out, and is rotated in the hose winding direction by a hose winding motor such as an internal combustion engine mounted on the airframe when the hose is wound. Pulling out the hose from the hose reel is performed using an electric motor or the like mounted on the airframe as a prime mover. The transmitter can also be controlled by the hose winding motor and the hose pulling motor.

  An operator carries the transmitter and the sprinkler and moves by pulling a hose that is forced out of the hose reel by the hose pulling motor, or pulled out from the hose reel for a long time. Can be sprayed onto a field or the like with the spraying spout while being wound around the hose reel.

  By the way, in the remote operation set moving jet, if the hose is pulled out to the full length (for example, about 130 m) by the operation of the prime mover for pulling out the hose, it is no longer possible to draw further. The worker needs to stop the operation of the prime mover for pulling out the hose. In that case, however, the operator is inevitably located far away from the hose reel, so that it is difficult to perceive that the hose has reached the limit of withdrawal. Therefore, there is a problem in that the connecting portion of the hose to the hose reel is damaged, or the load on the prime mover for pulling out the hose becomes too large, causing the prime mover to be damaged. These problems can be solved if, for example, the hose pulling-out motor is automatically stopped when the hose reaches the pull-out limit.

  As a means for solving such a problem, the configuration proposed in Patent Document 2 or Patent Document 3 can be adopted.

  Patent Document 2 describes a device for detecting the end of a wire wound around a bobbin. In this proposal, an optical detection means is disposed in the vicinity of a wire surface of a bobbin having a reflectance different from that of the wire, and light is emitted from the detection means toward the wire and the light captured by the detection means. In this case, the end of the wire rod is detected and the wire rod supply from the bobbin is stopped.

Moreover, although the thing of patent document 3 does not detect the drawer | drawer termination | terminus part of a hose, as a similar technique, the to-be-detected member attached to the winding termination | terminus part of a hose is detected with a sensor, The power take-up of the hose is automatically stopped by the signal (Patent Document 3).
JP 2000-60407 A Japanese Utility Model Publication No. 61-78171 Utility Model Registration No. 2567027

  However, since the methods described in Patent Documents 2 and 3 both detect the end of the object using a sensor, accurate detection is hindered if the detected part is dirty, etc. There is a problem. In particular, in the case of the remote operation set moving jet, since the hose is pulled out so as to crawl on the ground of the field, the reliability of the operation is low, for example, mud or the like tends to adhere to the hose. Therefore, the conventional proposal has many practical problems as it is.

  The present invention has been made in view of the above circumstances, and provides a drawer device in which the supply of drawer power by the drawer power supply means is automatically and accurately stopped when the drawer target reaches the drawer limit. It is what.

  The present invention is also intended to provide a remotely operated hose reel device provided with the drawer device.

  In order to solve the above-described problems, the drawer device according to the present invention has a base end portion coupled to the reel and the draw target wound around the reel is driven by the power supplied from the drawer power supply means. A pulling device for pulling out the power from the pulling power supply means, the control means for automatically stopping the supply of the power from the pulling power supply means when the state where the load on the pulling power supply means exceeds a predetermined level continues for a predetermined time; (Claim 1).

  In the pulling device, when the pulling power of the pulling target is supplied from the pulling power supply means, the reel is pulled by the pulling target, and the pulling target is continuously forcibly pulled out. . When the object to be pulled out is pulled out to the pull-out limit, the base end is connected to the winding frame, so that no further pulling is possible, and the load on the pulling power supply means increases rapidly. To do. When the load increase state continues for a predetermined time, the supply of the drawing power from the drawing power supply means is automatically stopped by the control means. Therefore, problems such as breakage of the connecting portion of the base end portion to the winding frame and breakage of the drawer power supply means are reliably prevented.

  The drawer device can be applied to various types of drawer objects such as a hose, a wire, a rope, a wire, a string-like material, and a strip-like material.

  Further, as the drawing power supply means, in addition to a prime mover such as an electric motor, an electromagnetic clutch or the like can be used.

  As a preferred embodiment, the control means opens the contact of the drive circuit when the current value of the drive circuit of the drawing power supply means exceeds a predetermined level for a predetermined time. (Claim 2).

  Furthermore, as a preferred embodiment, the winding frame can be driven to rotate in a direction in which the drawing target is wound up, and the contact is linked to an operation for starting rotation driving in the winding direction. It can also be made to actuate (Claim 3). If it does in this way, it will become possible to wind up the above-mentioned pull-out object pulled out to the pull-out limit to the above-mentioned reel with power, and will not hinder the subsequent work.

  The remote control type hose reel device according to the present invention includes a hose reel having a receiver, a hose reel that can freely rotate when the hose is pulled out, and a base end portion connected to the hose reel and wound around the hose reel. And a drawer power supply means for supplying power for pulling out the hose from the hose reel. The portable power transmitter is used to remotely control the drawer power supply means via the receiver. A remotely operated hose reel device capable of automatically stopping the supply of power from the drawer power supply means when the load on the drawer power supply means exceeds a predetermined level for a predetermined time. Control means is provided (claim 4).

  According to the hose reel device, the power drawer of the hose can be remotely controlled by the transmitter. That is, by operating the transmitter, the pulling power supply means is activated via the receiver, and when the pulling power of the hose is supplied, the hose reel is idled by being pulled by the hose. The hose is continuously withdrawn. When the hose is pulled out to the pull-out limit, since the base end is connected to the hose reel, further pull-out is impossible, and the load on the pull-out power supply means increases rapidly. . When the load increase state continues for a predetermined time, the supply of the drawing power from the drawing power supply means is automatically stopped by the control means. Therefore, problems such as breakage of the connecting portion of the base end portion to the winding frame and breakage of the drawer power supply means are reliably prevented.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a schematic perspective view of a set moving jet equipped with a remotely operated hose reel device including a drawer device according to an embodiment of the present invention, and FIG. 2 is an electric circuit diagram of the drawer device according to this embodiment. FIG. 3 is a current waveform diagram of the motor drive circuit of FIG.

  In FIG. 1, the airframe 2 of the set moving jet 1 is supported by four front, rear, left and right wheels 3, 3, 4, 4 so as to be movable. An internal combustion engine 5 as a main prime mover, a high-pressure plunger type spraying pump 6 driven by the internal combustion engine 5, and a rotatable hose reel 8 are mounted on the body 2. The hose reel 8 is wound with a pressure hose 7 having a length of 100 m or more as a drawing target and a winding target. The base end portion 7 a of the hose 7 is inserted into the rotating drum 9 of the hose reel 8 as a winding frame, and is applied to the left and right side ends of the rotating drum 9 via a rotating joint 10. It is connected to and communicated with the supply pipe 11, and the position is fixed. The spray liquid supply pipe 11 communicates with a discharge port (not shown) of the pump 6. A spray liquid such as a control liquid stored in a spray liquid tank (not shown) is pumped by the operation of the pump 6, drawn out from the hose reel 8, and can be extended to, for example, about 130 m along the field. Through the hose 7, the spray is sprayed from the spray nozzle 13 of the spray basket 12 connected to the tip 7 b of the hose 7 to the field.

  The hose reel 8 constituting the hose reel device 13 according to the present embodiment is drivingly connected to the internal combustion engine 5 via an appropriate type of hose winding clutch (not shown) such as an electromagnetic type. When the hose is wound, the internal combustion engine 5 is driven to rotate in the direction of winding the hose. On the other hand, when the hose is pulled out (drawn), the power transmission from the internal combustion engine 5 is cut off and idles. Although not shown in the drawings, the hose reel 8 is an electromagnetic type which prevents unnecessary loosening when the hose 7 is not pulled out or taken up in order to prevent the hose 7 from being disturbed. A suitable type of brake device is also provided.

  The hose 7 is pulled out by the pulling device 14 according to the present embodiment. The hose pulling device 14 includes a pair of rotatable hose pulling rollers 15 and 16 disposed above the hose reel 8. The first roller 15 as one of the hose pulling means has a hose fitting groove 15a on its outer periphery, and the other second roller 16 is freely rotatable in both forward and reverse directions. The hose 7 is clamped between the rollers 15.

  In the present embodiment, when the hose is pulled out, the first roller 15 is rotated in the forward direction (see FIG. 1) by the power transmission from the hose pulling-out electric motor 17 mounted on the machine body 2 as the drawing power supply means. In the counterclockwise direction). As a result, the hose 7 clamped between the rollers 15 and 16 is fed leftward as viewed in FIG. On the other hand, when winding the hose, the first roller 15 rotates in the reverse direction (see FIG. 1) according to the pulling movement of the hose 7 by the power of the internal combustion engine 5 in the hose winding direction of the hose reel 8. (Clockwise direction).

  By the cooperation of the pair of rollers 15, 16, the hose 7 that is sequentially pulled out from the freely rotating hose reel 8 extends through a hose guide tube 18 that extends in the hose pulling direction, and the destination is set by the operator. Stretched to.

  The hose reel device 13 includes a traverse device 19 having a known structure so that the hoses 7 can be aligned and wound. The traverse device 19 is configured to synchronize the pair of rollers 15 and 16 with the rotational speed of the hose reel 8 while keeping the relative position of the pair of rollers 15 and 16 constant when the hose 7 is extended and wound. The machine body 2 is reciprocated in the left-right direction along the winding width. Therefore, by the operation of the traverse device 19, the hose 7 can be aligned and wound within the winding width of the hose reel 8 when winding the hose, and the hose 7 can be smoothly fed when the hose is unwound. Can do.

  The pair of hose pull-out rollers 15 and 16 are supported on a reciprocating table 20 constituting the traverse device 19 via a pair of left and right roller support members 21 and 22. The pair of roller support members 21 and 22 are horizontally rotatable about the vertical axis X on the reciprocating table 20 so that the hose 7 can be pulled out from the set moving jet 1 in any direction. It is said that.

  The electric motor 17 for pulling out the hose is, for example, a direct current motor, and is driven to rotate by using a battery 23 mounted on the machine body 2 as a power source. , And supplied to the hose pulling roller 15 as a hose pulling means.

  The control of the hose reel device 13 including the drawer device 14 can be performed by the operation panel 24 provided in the machine body 2 as well as the control of the pump 6 and the internal combustion engine 5 and the like. It can also be performed by the radio control transmitter 25. On the machine body 2, a signal transmitted from the transmitter 25 is received and the first contact 26 (see FIG. 2) of the drive circuit (electric circuit) 37 of the electric motor 17 for pulling out the hose is controlled to open and close. A receiver 27 is provided. Note that reference numerals 28 and 29 in FIG. 1 denote a transmitting antenna and a receiving antenna, respectively.

As shown in FIGS. 2 and 3, in the electric circuit 37 for driving the electric motor 17 for pulling out the hose, a state where the load A of the electric motor 17 for pulling out the hose exceeds a predetermined level L continues for a predetermined time t2. Sometimes, the control means 30 composed of a microcomputer or the like that automatically stops the supply of hose pulling power from the hose pulling electric motor 17 and the normally closed (ON) type second controlled by the control means 30. A contact 31 is interposed. Specifically, a current detection unit 32 that continuously detects a current (load current) value A flowing in the electric motor 17 for pulling out the hose, and a duration t ₂ of the current value A detected by the current detection unit 32. And a time measuring unit 33 for measuring. The state in which the load current value A of the hose pulling electric motor 17 exceeds the predetermined level L by the signals output from the current detection unit 32 and the time measurement unit 33 to the control unit 30 When the predetermined time t ₂ that continued is determined in the control means 30, the control unit 30, normally closed (ON) in which the second contact 31 is opened (OFF) is automatically controlled so. As a result, the electric motor 17 for pulling out the hose stops, and the supply of the hose pulling power to the hose pulling roller 15 is stopped.

As the control means 30, a device including a microcomputer, a device including a relay, or the like can be adopted, but a method that can easily change the setting of the predetermined level L or the predetermined time t ₂ is employed. Is desirable.

  Next, the operation of the drawer device 14 will be described.

  As shown in FIG. 1, when an operator carries the transmitter 25 and the spreader 12 and presses a hose feed button 34 as an operation member disposed in the transmitter 25, the transmission A command signal from the antenna 28 is received by the receiving antenna 29. In FIG. 2, the signal from the receiver 27 closes the first contact point 26 of the drive circuit of the electric motor 17 for pulling out the hose. As a result, the electric motor 17 for pulling out the hose is rotationally driven (see FIG. 3), and the hose 7 is continuously and forcibly drawn out from the hose reel 8 that rotates freely. Therefore, the worker walks away from the machine body 2 while pulling the tip 7b side of the hose 7 while holding the spreading rod 12, thereby moving the hose 7 far along the field. Can be easily extended. While the hose feed-out button 34 is being pressed, hose pull-out power is continuously supplied from the hose pull-out electric motor 17, and when the operator releases the finger from the hose feed-out button 34, the first The contact 26 is opened, the hose pulling electric motor 17 is stopped, and the forcible pulling of the hose 7 by the pulling device 14 is stopped.

Here, if the hose 7 is pulled out from the hose reel 8 to its full length, the base end portion 7a is fixed to the hose reel 8 so that further power drawing is not possible. Therefore, the load current value A of the electric motor 17 for pulling out the hose continuously detected by the current detection unit 32 increases rapidly (see III in FIG. 3). The load current value A is set to a predetermined level L (for example, when the power is turned on) in advance by a signal output from the current detection unit 32 and the time measurement unit 33 to the control unit 30. The state in which the state exceeding 15 amperes, which is lower than the peak value K and so on and does not damage the electric motor 17, continues for a predetermined time t ₂ (for example, 0.5 seconds). When detected by the means 30 (see III in FIG. 3), the control means 30 opens the second contact 31 of the drive circuit 37 of the electric motor 17 for pulling out the hose and keeps its state (OFF). Is done. For this reason, the electric motor 17 for pulling out the hose is stopped, and the supply of the pulling power of the hose 7 to the hose pulling roller 15 is stopped. Therefore, problems such as damage to the connecting portion of the base end portion 7a of the hose 7 to the hose reel 8 and damage to the electric motor 17 for pulling out the hose are reliably prevented.

As indicated by I-II in FIG. 3, the peak value K that rises instantaneously for a very short time t ₁ when the electric motor 17 for pulling out the hose or the intrusion of external noise is set to the predetermined level L. even far beyond, as shown in III-IV of FIG. 3, if many times the predetermined time t ₂ the length of the well is measured continuously, the second contact 31 is opened (OFF) it is not, Therefore, there is no inconvenience that the electric motor 17 for pulling out the hose causes chattering.

  The second contact 31 opened (OFF) by the control means 30 is, for example, the transmitter 25 for rotating the hose reel 8 in the winding direction of the hose 7. In conjunction with the pressing operation of the hose take-up button 35, it automatically returns to the original closed (ON) state. Therefore, even when the hose pull-out electric motor 17 is driven again and the hose 7 is pulled out to the limit, the hose pull-out electric motor 17 can be automatically stopped.

  As another embodiment of the present invention, as indicated by the phantom line in FIG. 2, an electromagnetic clutch 36 can be used as the pulling power supply means instead of the hose pulling electric motor 17. . That is, the internal combustion engine 5 and the hose pull-out roller 15 are connected to each other on driving by an appropriate transmission means via the hose pull-out electromagnetic clutch 36, and the electromagnetic clutch 36 is connected to the operation panel 24 from the operation panel 24. The control operation is possible even from the transmitter 25. The electric circuit 37 for driving the electromagnetic clutch 36 for pulling out the hose uses the electric motor 17 for pulling out the hose, except that the electromagnetic clutch 36 is provided in place of the electric motor 17 for pulling out the hose. The same.

In this case, as shown in FIG. 2, when the first contact 26 is closed by operating the transmitter 25 or the like, the electromagnetic clutch 36 for pulling out the hose is connected, and the power of the internal combustion engine 5 is transmitted to a belt (not shown). The hose 7 is supplied to the hose pull-out roller 15 through the transmission means including a pulley and the electromagnetic clutch 36 and the hose 7 is forcibly pulled out. When the hose 7 is pulled out from the hose reel 8 to its full length and further power drawing is impossible, the current detecting unit 32 continuously detects the electromagnetic clutch 36 for pulling out the hose. The load current value A increases rapidly. A state in which the load current value A exceeds a predetermined level L set in advance by a signal output from the current detection unit 32 and the time measurement unit 33 to the control unit 30 is a predetermined time t set in advance. When the control means 30 determines that _{2 has} continued, the control means 30 opens the second contact 31 of the drive circuit 37 of the hose pulling electromagnetic clutch 36. For this reason, the electromagnetic clutch 36 for pulling out the hose is disconnected, and supply of further pulling power of the hose 7 to the hose pulling roller 15 is stopped. Therefore, problems such as damage to the connecting portion of the base end portion 7a of the hose 7 to the hose reel 8 and damage to the electromagnetic clutch 36 for pulling out the hose are reliably prevented.

It is a schematic perspective view of the remote operation type set moving jet provided with the remote operation type hose reel apparatus including the drawer | drawing-out apparatus which concerns on one Embodiment of this invention. It is an electric circuit diagram of the drawer | drawing-out apparatus based on this Embodiment. FIG. 3 is a current waveform diagram of the motor drive circuit of FIG. 2.

Explanation of symbols

2 Aircraft 7 Drawer (hose)
7a Base end of the object to be pulled out (hose) 8 Winding frame (hose reel)
13 Remotely operated hose reel device 14 Drawer device 17 Drawer power supply means (electric motor for hose drawer)
25 Transmitter 27 Receiver 30 Control means 31 Contact (second contact)
36 Drawer power supply means (electromagnetic clutch for hose drawer)
37 Drive circuit (electric circuit)
A Load L Predetermined level t ₂ Predetermined time OFF Open operation ON Close operation

Claims (4)

The base end portion (7a) is connected to the winding frame (8) and the drawing object (7) wound around the winding frame (8) is moved by the power supplied from the drawing power supply means (17, 36). A pulling device (14) for pulling out from the reel (8), wherein the state in which the load (A) to the pulling power supply means (17, 36) exceeds a predetermined level (L) continues for a predetermined time (t ₂ ). A drawer device comprising a control means (30) for automatically stopping the supply of power from the drawer power supply means (17, 36). When the current value (A) of the drive circuit (37) of the extraction power supply means (17, 36) exceeds a predetermined level (L) continues for a predetermined time (t ₂ ). The drawer device according to claim 1, wherein the contact (31) of the drive circuit (37) is opened (OFF).   The winding frame (8) can be rotationally driven in a direction to wind up the drawing target (7), and the contact (31) is closed in conjunction with an operation for starting rotational driving in the winding direction. 3. A drawer device according to claim 2, which is actuated (ON). A hose reel (8) that can freely rotate when the hose is pulled out, and a base end (7a) are connected to the hose reel (8) and connected to the hose reel (8). 8) a hose (7) wound around the hose (7), and a drawing power supply means (17, 36) for supplying power for pulling out the hose (7) from the hose reel (8). A remote control type hose reel device (13) capable of remotely controlling the drawer power supply means (17, 36) by means of a transmitter (25) via the receiver (27), wherein the drawer power supply means (13) 17, 36) When the load (A) to the predetermined level (L) continues for a predetermined time (t ₂ ), the power supply from the drawing power supply means (17, 36) is automatically performed. stop And a allowed to control means (30), remote controlled hose reel device.

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