JPH0527409Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is an automatic stop device for a hose reel in a hose winding machine, specifically, a hose winding machine mainly used for winding up a hose that supplies pressurized liquid to a nozzle. This invention relates to an automatic stop device for a hose reel in a machine.

(Prior Art) Conventionally, as seen in Japanese Utility Model Application No. 60-132881, a tension lever is used to transmit power from a prime mover to a hose reel via a transmission band, and to control tension and relaxation of the transmission band. and a motor for operating the tension lever, and the motor is
A hose reel has been proposed in which the hose reel is driven and stopped by remote control by being activated by a reception signal from a receiver that receives a transmission signal from a transmitter.

(Problems to be solved by the invention) However, if the hose reel is driven and stopped remotely using a transmitter, a receiver, and an electrically operated motor as described above, problems such as noise may occur. As a result, the transmission signal output from the transmitter may not be accurately transmitted to the receiver, which is very dangerous.

That is, a worker holding a nozzle connected to the tip of the hose operates a switch on the starter, outputs a drive signal from the transmitter to drive the hose reel, and the hose pulled out from the hose reel is
Even if a stop signal is output from the transmitter while a worker holding the nozzle is approaching the hose reel and winding it onto the hose reel, this stop signal may be transmitted to the receiver due to interference such as noise. If the transmission is not accurate, there are problems such as the worker holding the nozzle being pulled into the hose reel and being injured, or the nozzle being pulled in and the nozzle and hose reel being broken.

The purpose of the present invention is to automatically and reliably stop the hose reel even when the actuator that operates the tension lever does not operate in the direction to return the tension lever when winding the hose. The point is to make it possible.

(Means for solving the problem) Therefore, the present invention transmits power from the prime mover to the hose reel 2 via the transmission band 3, and
An automatic stop device for a hose reel in a hose winding machine, which is provided with a tension lever 4 for controlling tension/relaxation of the transmission band 3, and an actuator 5 for operating the tension lever 4. 2 is provided with a sensing body 7 that operates by contacting with a contact piece provided in the middle of the hose wound around the hose reel 2, while one end is connected to the actuator 5 to perform the operation. A tensioning/relaxable transmission cable 9 that transmits the operation of the motive 5 to the tension lever 4, and a tension position in which the transmission cable 9 is tensioned and the tension lever 4 is moved forward in the direction in which the transmission band 3 is tensioned. and a cable receiver 8 that is swingably supported to a relaxed position in which the front transmission cable 9 is relaxed and the tension lever 4 is moved back in the direction in which the transmission band 3 is relaxed; , an unstable switching mechanism B including an elastic body 91 biasing toward one of the tensioned position and the relaxed position is provided between the cable receiving body 8 and the sensing body 7 so that the sensing body 7 In conjunction with the operation,
An interlocking body 10 is provided which swings the cable receiver 8 from a tensioned position to a relaxed position by the operation of the sensing body 7.

(Function) Activate the actuator 5, tension the transmission band 3 with the tension lever 4, drive the hose reel 2,
While the hose is being wound around the hose reel 2, when the abutment provided on the hose comes into contact with the sensing body 7 and the sensing body 7 is activated, the cable receptacle is moved in conjunction with the sensing body 7. 8 swings from the tensioned position to the relaxed position, and the tension lever 4
moves back in the direction of relaxation, the transmission band 3 is relaxed, and the rotation of the hose reel 2 can be automatically stopped. is swung to the relaxed position in conjunction with the operation of the sensing body 7, so when the sensing body 7 is activated by the abutting element, the abutting element moves relative to the sensing body 7 due to the inertia of the hose reel, etc. Even if the contact with the sensing body 7 is released after too long,
The cable receiver 8 can be maintained in a relaxed position, and therefore the transmission band 3 of the tension lever 4 can be prevented from moving in the direction of tension, and the relaxed state of the transmission band 3 can be maintained, which is extremely safe. It is highly sensitive.

(Example) The illustrated hose winding machine is equipped with a pump device P and a liquid tank T, and is provided with a reel stand 1 on a frame F supported by a hydraulic three-point link of a tractor. The hose reel 2 is rotatably supported by the reel shaft 21 of the hose reel 2.
is linked to the transmission shaft 31 via the transmission band 3, and has a tension roller 41 at the end of the reel shaft 21 that engages with the transmission band 3, and controls the tension/relaxation of the transmission band 3. The tension lever 4 is supported in a freely swinging manner, and the frame F is provided with an actuator 5 consisting of a motor that operates the tension lever 4. The hose guide 6 is connected to the hose reel 2 through the operating reciprocating mechanism.
The transmission shaft 31 is arranged to freely reciprocate in the direction of the center line of the pop-up device P, and the transmission shaft 31 is configured to be linked to the prime mover of the tractor via the output shaft of the pop device P, a universal joint, and the tractor PTO.

The actuator 5 is electrically connected to a receiver (not shown) that receives a transmission signal from a transmitter (not shown), and is driven forward and reverse within a certain range by the signal received from the receiver. It is designed to be driven,
Further, at the nozzle side end of the hose H wound around the hose reel 2, an abutment A having a diameter larger than the hose diameter is provided.

In the embodiment shown in FIGS. 1 to 3, the guide frame of the hose guide 6, which is provided to freely reciprocate with respect to the hose reel 2, is provided with the abutment provided at the nozzle side end of the hose H. A sensing body 7 that operates by contacting the child A is swingably provided, and a cable receiver 8 is pivotally supported on the reel stand 1 via a pivot shaft 80 to connect with the output shaft of the actuator 5. The free end of the cable receiver 8 is connected via an elastic body 91 made of a coil spring and a tension/relaxable transmission cable 9, and a roller 42 is pivotally supported in the middle of the tension lever 4. An intermediate portion of the transmission cable 9 is hung on the roller 42 so that the operation of the actuator 5 is transmitted to the tension lever 4 via the transmission cable 9, and the cable receiver 8 is connected to the transmission cable 9. There is a tension position in which the cable 9 is tensioned and the tension lever 4 is moved forward in the direction in which the transmission band 3 is tensioned, and a tension position in which the transmission cable 9 is relaxed and the tension lever 4 is moved in the direction in which the transmission band 3 is tensioned.
The free end of the cable receiving body 8 and the sensing body 7 are connected to each other via an interlocking body 10 (hereinafter referred to as the interlocking cable 10). The linking cable 10 is pulled by the actuation of the sensing body 7, the cable receiver 8 is swung from the tensioned position to the relaxed position to relax the transmission cable 9, and the tension lever 4 is Transmission band 3
This was done in such a way that it moves back in the direction of relaxation.

In the above configuration, as shown in FIG.
The abutment piece 71 is inserted into the movement path of the abutment element A in the hose guide 6 so that the abutment element A passes through the hose guide 6. When doing so, the contact piece 71
The abutment element A is brought into contact with the contact member A, and the sensing body 7 is swung clockwise in FIG.

Further, the elastic body 91 biases the cable receiver 8 toward one of the tensioned position and the relaxed position, and the coil spring 91 and the cable receiver 8 actuate the unstable switching mechanism B. It consists of

Further, the interlocking cable 10, which has one end supported on the sensing body 7, has the other end supported on the free end of the cable receiver 8.

In the illustrated embodiment, the cable receiver 8 is provided with an L-shaped manual lever 11 for manually reversing the cable receiver 8 to the relaxed position, and a manual lever 11 for manually reversing the cable receiver 8 to the tensioned position. Two manual ropes 12 and 13 are provided for reversing the
is suspended from the lower side of the hose reel 2, and
The other manual cable 13 has its free end supported at a position near the grip of the tension lever 4.

Further, reference numeral 14 in the figure represents an auxiliary spring for assisting the tension lever 4 to return to its original position.

The present invention is constructed as described above, and when the hose H pulled out from the hose reel 2 is wound onto the hose reel 2, the worker holding the nozzle C operates the switch of the transmitter to remove the hose H from the transmitter. A drive signal is output, the receiver is operated, the actuator 5 is driven forward, the transmission cable 9 is pulled, the tension lever 4 is moved forward, the transmission band 3 is tensioned, and the power from the prime mover is transferred to the The power is transmitted to the hose reel 2 via the transmission band 3, and the hose reel 2 is driven to wind up the hose H.

Therefore, when winding up this hose H, the hose H
is wound up to a predetermined length and when the abutting element A provided at the nozzle side end of the hose H passes through the hose guide 6, the abutting element A touches the abutting piece 7 of the sensing body 7.
1, the sensing body 7 swings clockwise in Figure 1 and pulls the interlocking cable 10, and this pulling causes the cable receiver 8 to reverse from the tensioned position to the relaxed position as shown by the chain line in Figure 1. Then, the tension lever 4 is moved back in the direction in which the transmission band 3 is relaxed by the weight of the lever 4 or the force of the auxiliary spring position 4, thereby relaxing the transmission band 3. . Due to this relaxation of the transmission band 3, power transmission from the prime mover to the hose reel 2 is cut off, and the rotation of the hose reel 2 is automatically stopped.

Therefore, while winding the hose H,
Even if a stop signal is output from the transmitter to stop the rotation of the hose reel 2, this stop signal is not accurately transmitted to the receiver due to interference such as noise, and the actuator 5 is not driven in reverse. First, even if the rotation of the hose reel 2 cannot be stopped because the transmission band 3 cannot be relaxed, the hose reel 2 can be stopped automatically and reliably.

Further, it has a structure in which a tension lever 4, an actuator 5 for actuating the lever 4, and a transmission band 3 are used, and the transmission band 3 is automatically relaxed to automatically stop the rotation of the bow reel 2. Since the drive of the prime mover that drives the hose reel 2 is not automatically stopped and the rotation of the hose reel 2 is not automatically stopped, the hose H wound around the hose reel 2 is pulled out again to discharge the liquid. When carrying out work, the hose reel 2 can be rotated by a simple operation of reversing the rope receiver 8 of the unstable switching mechanism B to the tensioned position using, for example, the manual rope 12 or 13 without restarting the prime mover. It is possible to do so.

In the embodiment described above, the cable receiver 8 is used as a means for moving the tension lever 4 back in the direction in which the transmission band 3 is relaxed, and the cable receiver 8 is pivotally supported on the reel stand 1. One end of the transmission cable 9 is connected to the cable receiver 8
The transmission cable 9 is supported at the free end thereof, and the middle of the transmission cable 9 is hung on the roller 42 of the tension lever 4. one end of the transmission cable 9 is supported at the free end of the cable receiver 8, and the transmission cable 9 is relaxed by reversing the cable receiver 8 from the tensioned position to the relaxed position. Alternatively, one end of the transmission cable 9 may be supported by the tension lever 4, and the cable receiver 8 may be pivotally supported by the reel stand 1, so that the free end of the cable receiver 8 is supported by the tension lever 4. is engaged with the middle of the transmission cable 9, and the transmission cable 9
The transmission cable 9 may be tensioned in a curved shape, and the transmission cable 9 may be relaxed by reversing the cable receiver 8 to a relaxed position. Furthermore, the interlocking body 10 may be a rod, for example, instead of the interlocking rope.

In addition, 15 in FIG. 6 is a coil with a weak spring force for urging the cable receiver 8 toward the tensioned position and reliably preventing the cable receiver 8 from unexpectedly reversing toward the relaxed position. It's a spring.

In addition, although a motor is used as the actuator 5, for example, a fluid pressure cylinder equipped with an electromagnetic valve is used, the transmission cable 9 is supported on the rod of this cylinder, and the electromagnetic valve is connected to the receiver with electricity. Alternatively, the transmission cable 9 may be connected to the transmission line 9, and the electromagnetic valve may be actuated by a transmission signal from the transmitter to tension/relax the transmission cable 9.

Moreover, although the sensing body 7 was provided in the hose guide 6,
Alternatively, it may be provided on the reel stand 1, the frame F, or the liquid tank T, for example.

(Effect of the invention) As described above, the invention transmits power from the prime mover to the hose reel 2 via the transmission band 3, and
An automatic stop device for a hose reel in a hose winding machine, which is provided with a tension lever 4 for controlling tension/relaxation of the transmission band 3, and an actuator 5 for operating the tension lever 4. 2 is provided with a sensing body 7 that operates by contacting with a contact piece provided in the middle of the hose wound around the hose reel 2, while one end is connected to the actuator 5 to perform the operation. A tensioning/relaxable transmission cable 9 that transmits the operation of the motive 5 to the tension lever 4, and a tension position in which the transmission cable 9 is tensioned and the tension lever 4 is moved forward in the direction in which the transmission band 3 is tensioned. and a cable receiver 8 that is swingably supported to a relaxed position in which the transmission cable 9 is relaxed and the tension lever 4 is moved back in the direction in which the transmission band 3 is relaxed; , an unstable switching mechanism B including an elastic body 91 biasing toward one of the tensioned position and the relaxed position is provided between the cable receiving body 8 and the sensing body 7 so that the sensing body 7 Since the interlocking body 10 is provided in conjunction with the operation and swings the cable receiver 8 from the tensioned position to the relaxed position by the operation of the sensing body 7, when the hose is wound onto the hose reel 2, the hose is When the abutment provided on the hose reel 2 approaches the hose reel 2 and comes into contact with the sensing body 7, the sensing body 7 is actuated to move the tension lever 4 back, relax the transmission band 3, and remove the hose. The rotation of the reel 2 can be stopped automatically and reliably, and the rope receiving body 8 constituting the unstable switching mechanism is swung to the relaxed position in conjunction with the operation of the sensing body 7. When the sensing body 7 is actuated by the abutting element, even if the abutting element moves too much with respect to the sensing body 7 due to the inertia of the hose reel and is released from contact with the sensing body 7, the rope The receiver 8 can be maintained in the relaxed position, and therefore the transmission band 3 of the tension lever 4 can be prevented from moving in the direction of tension, and the relaxed state of the transmission band 3 can be maintained.
It is extremely safe. Therefore, even if a signal to operate the actuator 5 in a direction to stop the rotation of the hose reel 2 is sent by remote control while the hose is being wound, the actuator 5 may be activated due to interference such as noise. Even if this is not possible, an accident may occur in which a worker holding the distal end of the hose is drawn into the hose reel 2, or a nozzle connected to the distal end of the hose is drawn into the hose reel 2. can be reliably prevented.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the device of the present invention;
FIG. 2 is a schematic explanatory diagram of the state assembled to a hose winder, FIG. 3 is a perspective view of only the sensing body, and FIGS. 4 and 5 are explanatory diagrams showing an example assembled to a liquid spraying device.
FIG. 6 is a partially omitted front view showing another embodiment. 2... Hose reel, 3... Transmission band, 4... Tension lever, 5... Actuator, 7... Sensing body,
9... Transmission cable, B... Relaxation control mechanism.

Claims (1)

[Scope of utility model registration request] The power from the prime mover is transmitted to the hose reel 2 via the transmission band 3, and the transmission band 3 is tensioned and
An automatic stop device for a hose reel in a hose winding machine, which is provided with a tension lever 4 for controlling relaxation and an actuator 5 for operating the tension lever 4, and is located near the hose reel 2.
A sensing body 7 is provided which operates by coming into contact with a contact piece provided in the middle of the hose wound on the hose reel 2, and one end is connected to the actuator 5 to control the operation of the actuator 5. Transmission cable 9 that can be tensioned and relaxed and transmits data to the tension lever 4, and the transmission cable 9
There is a tension position in which the transmission cable 9 is relaxed and the tension lever 4 is moved forward in the direction in which the transmission band 3 is tensioned, and a tension position in which the transmission cable 9 is relaxed and the tension lever 4 is moved forward in the direction in which the transmission band 3 is tensioned.
a cable receiver 8 that is swingably supported to a relaxed position in which the transmission band 3 is moved back in the direction in which the transmission band 3 is relaxed; and an elastic member that urges the cable receiver 8 to either the tension position or the relaxed position. An unstable switching mechanism B having a body 91 is provided between the cable receiving body 8 and the sensing body 7, and is interlocked with the operation of the sensing body 7. An automatic stop device for a hose reel in a hose winding machine, characterized in that an interlocking body 10 for swinging a body 8 from a tensioned position to a relaxed position is provided.