JPH0872606A - Cylindrical long material unloader - Google Patents

Abstract

PURPOSE: To provide a simple and low-priced unloader, by which an loading work for a cylindrical long material can be done by oneself, and which can be easily remodeled and installed on the existing vehicle. CONSTITUTION: A cylindrical long material unloader comprises a fluid cylinder 13 including an expansion rod 13a, one end of which is put in the connecting state directly or through a link mechanism between a fulcrum 12b of a manual lever 12 of a band brake device 10 for a manual winch 8 provided on a truck 1, a trailer or the like where a cylindrical long material 51 can be loaded, the other end thereof being connected to the base 7, a hydraulic device 14 for reciprocating a hydraulic cylinder and a control part 25 for controlling the hydraulic device, wherein the unloader is provided with a remote control device for instructing a control signal to the control part by radio.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unloading device for unloading a cylindrical long object such as a utility pole or a pile onto a ground such as a truck or trailer.

[0002]

2. Description of the Related Art Conventionally, a crane, a forklift or the like is used for loading and transporting a cylindrical long object such as an electric pole on a rack such as a truck, and after loading, a winch drum provided on a vehicle body. The wire is wrapped around a utility pole and fixed to a pedestal for transportation. And when lowering the destination from the pedestal, cross the sloping plate over the gantry,
Fix the tip of the winch drum wire to the cradle side, wind the utility pole with the wire so that the wire is stretched outside the cradle,
The utility pole was pushed out from the gantry to the side of the inclined plate, and the amount of wire fed out was controlled to roll the utility pole from the inclined plate at an appropriate speed and drop it on the ground. However, there is an operator who rolls the utility poles on the pedestal in order with a lever to move them to the inclined plate side, and a manual winch that adjusts the amount of wire wound around the utility pole so that the utility poles do not start rolling. At least two workers operating the brakes were needed.

[0003]

[Problems to be Solved by the Invention]
Japanese Patent No. 9571 discloses a device for lateral movement on a pedestal such as a telephone pole so that one person can work. Further, although the winch is not disclosed in detail, by automating the lateral movement device, even if it is a manual winch, if the lateral movement device can be operated at the operating position, one person can work. Furthermore, it is expected by analogy that the use of an automatic winch will reduce the burden on the operator. However, such a device for lateral movement has a complicated structure and is expensive, and since it is used only when unloading, there is a cost problem. Further, there is a problem that the cost is further increased when the winch is automated.

In view of the above-mentioned problems, an object of the present invention is to provide a cylindrical long object unloading device which is simpler, less expensive, and capable of unloading long objects by one person. The purpose is to do. Further, another object of the present invention is to provide a cylindrical long object unloading device which can be easily retrofitted to an existing vehicle.

[0005]

In order to achieve the above object, in the present invention, in a band / brake device for a manual winch provided on a truck, a trailer or the like capable of loading a cylindrical long object, A fluid cylinder having a retractable rod is provided between the fulcrum of the manual lever of the band / brake device and the point of manual action, one end of which is connected directly or via a link device and the other end is connected to the base. A hydraulic device that reciprocates the hydraulic cylinder and a control unit that controls the hydraulic device are provided, and a remote control device that can wirelessly issue a control signal is provided to the control unit.

[0006]

[Function] Manual winch band / brake device (hereinafter,
The hydraulic cylinder attached to the manual lever of the brake device is configured to expand and contract or stop according to the control command from the remote control device, so the brake device is controlled via the manual lever depending on the position of the hydraulic cylinder. . The pulling force of the wire due to the rolling and dropping load of the electric pole or the like is controlled by the position of the hydraulic cylinder because the braking force is applied by the brake device, so that the pulling amount of the wire can be controlled. With such a configuration, the worker can freely move while holding the remote control device that controls the hydraulic cylinder, so that the brake device can be operated by moving a telephone pole or the like on the pedestal and operating the remote control device at that position, as in the conventional case. It is possible to control and to control the amount of wire to be pulled out, and it is possible for one worker to unload a cylindrical long object.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of a cylindrical long object unloading device of the present invention, FIG. 2 is a hydraulic circuit diagram when hydraulic pressure is used as a fluid generating device used in the present invention, and FIG. 3 is a control circuit diagram. In FIG. 1, a pedestal part 3 is provided on a loading platform of a truck 1 by passing two crossbars 2. Locking portions 4 are provided on both side surfaces of the middle of the crossbar 2 so that the ends of the wires 5 can be locked. The wire 5 can be wound around a manual winch 8 whose end is fixed to a torii (base) 7 at the rear of the truck cab 6. Between the manual winch 8 and the engaging portion 4, winding members 9a and 9b such as pulleys and guides are appropriately provided.

The manual winch 8 comprises a winch drum 8a around which the wire 5 is wound, and a brake drum 10 directly connected to the winch drum 8a. An angular protrusion 8b is provided at the center of rotation of the winch drum 8a on the side opposite to the brake drum, and a removable L-shaped handle (not shown) having an angular hole that fits into the angular protrusion is manually operated. The winch drum is rotated by rotating the winch drum. Further, a fixing device such as a ratchet for fixing the rotation when the winch drum is not used,
Screws and the like are provided. For fixing, use the manual lever 7
You may make it hook on the protrusion provided in the.

The brake drum 10 is a brake portion of a brake device. The brake drum 10 is wound, and one end of a brake band 11 is fixed to a torii portion 7 below the brake drum and the other end is a brake operating lever 12 above the brake drum. Is connected to the end 12a of the. In the examples, a wire rope having a diameter of 12 mm wound around a brake drum having a diameter of 400 mm three times was used. The brake operating lever 12 is provided with a fulcrum 12b at the torii portion 7 and a grip portion 12c at the other end. When the grip portion 12c is lowered, the end portion 12a is pulled upward so that the brake band 11 tightens the brake drum to enable the braking action. When the grip portion 12c is moved upward, the brake band is loosened and the brake is released.

A hole 12d is provided between the fulcrum 12b of the brake operating lever 12 and the grip bar 12c, and the hydraulic cylinder 1
The rod tip 13a of No. 3 is pin-connected to the hole 12d. The cap side 13b of the hydraulic cylinder is pin-coupled to the torii portion 7, and the brake operating lever 12 can be tilted up and down by the movement of the rod of the hydraulic cylinder. The oil supply / discharge port of the hydraulic cylinder 13 is the hydraulic port 15a of the hydraulic device 14,
It is connected to 15b.

As shown in FIG. 2, the hydraulic device 14 includes a hydraulic pump 16 for generating hydraulic pressure, a DC motor 17 for driving the hydraulic pump, a safety valve 18, a pressure gauge 19, a position of the oil flow to the hydraulic cylinder, and a brake. A three-position four-way solenoid valve 20 for controlling the opening (SV3, rod extension, upward movement) 20a and the brake (SV4, rod contraction, downward movement) 20b, and a flow rate control valve for controlling the rod expansion / contraction speed of the hydraulic cylinder. 21 is provided.
A pilot check valve 22 is provided in the connecting oil passage 15a on the 13th rod 13a side of the hydraulic cylinder so as to keep the hydraulic pressure sealed so that the rod does not extend when the hydraulic cylinder is stopped. Reference numeral 23 is an oil tank, and 24 is a strainer. The hydraulic device is compactly assembled in the cover and attached to the torii part 7.

A control unit 25 for driving the electric motor 17 and the solenoid valve 20 provided in the hydraulic device 14 is attached to the upper part of the torii section 7. The control unit 25 and the hydraulic device 14 are connected by a cable 26. Control unit 2
5, an antenna 27 for receiving radio is provided above, and as shown in FIG. 3, a receiver 28 and a relay circuit unit 2 are provided.
It is composed of nine. The receiver 28 is a commercially available industrial radio control device that is paired with a transmitter to be described later, and includes a power supply unit 28a, a receiving unit 28b that receives a signal from a remote control device, a station code unit that processes the received signal. A processing unit 28c including a decoder, a relay output circuit 28d for outputting a relay output by the processing unit, a brake (contraction) signal output unit 28e, and a brake release (extension).
A signal output unit 28f is provided.

The relay circuit section 29 includes an open signal output section 28.
A relay (R1) 29a that operates according to the signal of f is provided, and when the relay (R1) operates, the open side solenoid (SV
3), the motor (M) and the timer (T1) are activated, and the solenoid (SV4) is not activated. Reference numeral 29c designates a timer (off-delay timer T1) which is operable for a fixed time when the relay (R1) 29a is turned on and after being released. When the timer (T1) is activated, the relay (R2) 29b is activated, and the timer (T1) is activated after a certain time has elapsed after the relay (R1) is cut off.
Has timed out and the relay (R2) is cut off. Further, the relay (R2) 29b is actuated by the signal of the brake signal output unit 28e, and when the relay (R2) is actuated, the brake side solenoid (SV4), the motor (M)
Is set to work.

Therefore, when the brake is operated, the brake side solenoid (SV4) and the motor (M) are turned on / off according to the turning on / off of the brake output signal of the receiver.
On the other hand, during the brake release operation, the release side solenoid (SV
3), the motor (M) turns on, but when the brake release signal is off, the release side solenoid (SV3) turns off.
The brake side solenoid (SV4) is turned on for the time set by the timer (T1). By doing so, in the short-time operation during the brake release operation, the brake side solenoid (SV4) automatically works after the release is stopped, and the brake action can be performed, and the inching operation such as the position alignment becomes possible. 29d is a main switch for turning on / off the power of the control unit and the receiver, and 29e is a safety fuse.

The remote control device 30 comprises a constant voltage power supply unit 30a using a dry battery as a power source, an operation switch unit 30b, a processing unit 30c composed of a station code and an encoder, and a signal transmission unit 30d. A power switch 30e, a push button for a brake release (hydraulic cylinder extension) command, and a push button for a brake (hydraulic cylinder contraction) command are provided so that the user can operate and carry with one hand. The release or brake command button is adapted to transmit an ON signal while the button is being pressed, and the corresponding release signal output part 28f and brake signal output part 28e of the receiver 28 are adapted to be turned on.

Next, the operation of the embodiment of the present invention will be described. The device of the present invention is a utility pole 51 mounted on a pedestal 3.
It is used for the work of lowering the etc. along the inclined plate 52. As shown in FIG. 1, the worker 53 turns on the power source 30e of the control unit 25 and the remote control device 30, and once pushes the brake command push button 30b of the hydraulic cylinder 13. Brake side solenoid (SV4) 20 via the receiver 25 and the control unit 29
b is excited to supply the pressure oil of the hydraulic pump (16) to the rod side 13a of the hydraulic cylinder to contract the hydraulic cylinder and pull the brake belt 11 via the manual lever 12 to bring the brake 10 to the engaged state, which is not shown in the figure. Release the locking device.

Next, the operator 53 presses the brake release command push button of the remote control device while adjusting the engagement of the drum brake 10 while linking the lever 54 and the remote control device 30, and releases the brake through the receiver and the control unit. The side solenoid (SV3) 20a is excited to supply the pressure oil of the hydraulic pump (16) to the cap side 13b of the hydraulic cylinder 13 to extend the hydraulic cylinder and the brake belt 1 via the manual lever 12.
Loosen 1 to release the brake 10, pull out the wire 5 from the winch drum 8, wrap the wire around the utility pole 51, and stop the tip of the wire at the locking portion (when transporting with the utility pole wound around the wire) The wire tip is fixed to the locking portion 4, and it is only necessary to loosen the wire).

With the wire 5 slightly loosened, the brake command push button of the remote control device 30 is pressed, the brake is applied again, and while the wire is wound around the utility pole 51, the lever 54 is moved toward the inclined plate 52 by the lever 54. To move. While watching the tension of the wire, the brake release command push button 30b of the remote control device 30 is pressed to extend the hydraulic cylinder 13, the brake band 11 is loosened, the brake 10 is opened, and the electric pole is dropped along the slope. If the brake release command push button is released within a short time, the solenoid (SV
3) 20a is turned off to stop the expansion of the hydraulic cylinder, and on the contrary, the timer 29c causes the solenoid (SV4) for a certain period of time.
Since 20b is turned on and pressure oil is supplied to the rod side 13a of the hydraulic cylinder, the hydraulic cylinder contracts, the brake is applied again, and the descent of the electric pole is stopped. The operation is repeated for a short time, and when one or two utility poles are lowered onto the inclined plate, a brake signal is transmitted from the remote control device as needed to reliably apply the brake and stop the utility pole in the middle of the inclined plate.

Further, the next utility pole 51 is moved and brought into contact with the previously lowered utility pole, and the remote control device 30 is used to loosen the wire 5 in the same manner as described above to lower the utility pole by one and stop it again. By repeating this operation, when the number of utility poles 51 reaches a predetermined number, a remote control device transmits a hydraulic cylinder rod extension signal to open the brake 10, loosen the wire, and lower the suspended utility pole 51a to the ground. Remove the tip of the wire from the locking part 4, attach the wire tip to the locking part again so that the remaining utility pole can be wound up, and manually rotate the winch 8 to wind up the wire and stretch the wire slightly loosely, Do the following: After lowering all of the utility poles, release the brake, manually wind the wire around the winch, apply the winch brake, turn off the power, and stop the winch to complete the work. Needless to say, if the rod of the hydraulic cylinder can be removed, the brake can be operated by the manual lever.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a hydraulic circuit diagram of the second embodiment of the present invention. In the first embodiment, long-time brake operation during transportation is possible by holding pressure with a hydraulic cylinder, fixing the drum with a ratchet, screws, etc., or fixing a band / brake operating lever. is there. However, if only the pressure is held by the hydraulic cylinder, there is a risk of loosening due to oil leakage, etc., and other fixing methods are troublesome. Moreover, although a large braking force can be obtained by using hydraulic pressure, on the other hand, a sufficient braking force cannot be obtained by manual operation, so that the braking force cannot be secured when the hydraulic device or the like fails.

Therefore, in the second embodiment of the present invention,
Although the structure is complicated, the spring with sufficient braking force can always apply the braking force, and the brake can be released hydraulically, so that the braking force can always be easily secured not only during work and during transportation. I did it. Further, a manual hydraulic pump and a stop valve are provided at the oil inlet / outlet side of the cap side 44b of the hydraulic cylinder so that the brake can be released even when a hydraulic pressure failure occurs so that the brake can be released and actuated.

Since only the connecting structure between the band / brake operating lever and the hydraulic cylinder and a part of the hydraulic device are different from the first embodiment, only the different points will be explained, and also the first embodiment. Similar parts are designated by the same reference numerals, and part of the description is omitted. In FIG. 4, a connecting member 41 having one end pin-attached to the hole 12d between the fulcrum 12b of the brake operating lever 12 and the grip bar 12c is attached, and the other end of the connecting member has its fulcrum 42a attached to the base side. It is pin-coupled to the right arm 42b side of the link device 42 which is rotatable about the fulcrum in the same direction as the hole 12d of the brake operating lever. On the left arm 42c side of the link device 42, the other end is attached to the upper part of the base 7 side and a spring 43 is pin-connected so as to pull the left arm.
The brake operating lever 12 is pulled downward via the fulcrum, the right arm, and the connecting member 41 to tension the brake band 11 and apply a braking action to the band / brake device 10.

A rod 44a of a hydraulic cylinder 44 is provided outside the spring 43 on the left arm 42c side of the link device 42.
Is pin-connected to the left arm with the rod tip facing downward. The cap side of the hydraulic cylinder is attached to the base 7. When the rod of the hydraulic cylinder extends, the left arm 42c of the link device 42 is lowered against the spring 43 so that the brake works. When the rod is contracted, the left arm of the link device 42 is retracted. 42c is raised and works in a direction in which the brake is applied together with the spring. When the rod 44a of the hydraulic cylinder is in a free state, only the spring 43 works. The oil supply / discharge port of the hydraulic cylinder 44 is the hydraulic port 15 of the hydraulic device 14.
Although connected to a and 15b, they are connected in the opposite manner to the first embodiment.

The hydraulic system 14 includes a hydraulic pump 16 for generating hydraulic pressure, a DC motor 17 for driving the hydraulic pump, and a safety valve 1.
8, a pressure gauge 19, a flow control valve 21, an oil tank 23, and a strainer 24 are provided as in the first embodiment. However, in the second embodiment, the three-position four-way solenoid valve 20 holds the position of the flow of oil to the hydraulic cylinder, extends the rod (moves downward, releases the brake) by exciting the right solenoid (SV3) 20a, and the left solenoid ( SV4) 20
b Excitation controls rod contraction (upward movement, braking). The pilot check valve 22 is provided on the cap 44b side of the hydraulic cylinder 44 and seals and holds the hydraulic pressure at the brake release position so that the rod does not contract when the hydraulic cylinder is stopped.

Therefore, the transmitter releases the brake and gives a brake signal, and the solenoids SV3 and SV are transmitted through the control unit.
4 is excited to supply the pressure oil of the hydraulic pump 16 to the hydraulic cylinder to expand and contract the hydraulic cylinder. When the hydraulic cylinder extends, the brake is operated against the spring in the opening direction,
When the hydraulic cylinder contracts, it acts as a brake together with the spring. When hydraulic pressure is not applied, the pressure of the hydraulic cylinder in the contracting direction is released to the tank through the oil passage in the neutral position of the solenoid valve, so the brake can always be applied only by the spring force. , The braking force can be easily secured at all times, not only during transportation.

Hydraulic tank and hydraulic cylinder cap side 44
A hand pump 45 and a stop valve 46 are provided in parallel with the solenoid valve 20 and the like between the connection ports 15a of b. A check valve 47 is provided on the outlet side of the hand pump 45 to prevent backflow of pressure oil from the hydraulic cylinder. Even if the hydraulic pump fails, operating the hand pump can supply pressure oil to the cap side 44b of the hydraulic cylinder to extend the rod and release the brake against the spring force. When opened, the pressure oil on the cap side of the hydraulic cylinder can be returned to the tank, the rod of the hydraulic cylinder can be contracted, and the spring force can be applied to actuate the brake. Therefore, the brake can be operated and the brake can be released even when the hydraulic pressure fails.

In case the remote control device 30 fails, the control section may be provided with switches such as buttons which can be operated by the control section in addition to the remote control apparatus. In the embodiment, the fluid cylinder and the like are hydraulic type, but pneumatic type is also possible. However, in the case of pneumatic pressure, since intermediate stop and speed control are inferior to those of the hydraulic type, it is preferable to use a cylinder with a stopper or the like capable of intermediate stop in order to perform delicate brake operation. In addition, the hydraulic control system can use a single-acting cylinder or tension control by pressure control, but the manual winch brake device requires a force for manual winch operation if the brake band of the band / brake device is slightly stretched. So
It is preferable to lengthen the stroke of the cylinder in order to surely loosen the brake band. Further, since the electric motor is a DC electric motor and consumes a large amount of energy, the solenoid valve and the DC electric motor are moved only when the hydraulic cylinder is moved so that the engine can be operated for a long time even when the engine is stopped. When the engine is used without being stopped, the pump may be directly driven by the PTO or the like of the engine in addition to the electric motor.

[0028]

Since the present invention is configured as described above, it has the following effects. Since the control of the wire extraction of the manual winch is controlled wirelessly,
It has become possible to provide a cylindrical long object unloading device that enables an operator to freely move on and off a gantry and work easily, and can unload long objects by himself. Also, it is only necessary to be able to remotely control only the brake operation when pulling out, the mechanism is simple because the brake operation when pulling out is only mechanized, and it is also possible to use the manual lever as it is. It is possible to install it on a vehicle with a simple modification, and it is possible to provide an inexpensive and simple cylindrical long object unloading device.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a cylindrical long object unloading device that is a first embodiment of the present invention.

FIG. 2 is a hydraulic circuit diagram of the cylindrical long object unloading device according to the first embodiment of the present invention.

FIG. 3 is a control circuit diagram of the cylindrical long object unloading device according to the first embodiment of the present invention.

FIG. 4 is a hydraulic circuit diagram of a cylindrical long object unloading device according to a second embodiment of the present invention.

[Explanation of symbols]

 1 truck 7 base (torii) 8 manual winch 10 band / brake device 12 manual lever 12b fulcrum 12c manual action point 13 fluid cylinder 13a rod 14 fluid generator (hydraulic device) 25 control unit 30 remote control device 42 link device 51 cylinder Long object (electric pole)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Shimogane 20 Ishigane, Toyama City, Toyama Prefecture Fujikoshi Co., Ltd.

Claims (1)

[Claims] 1. A band-brake device for a manual winch provided on a truck, trailer or the like capable of loading a cylindrical long object, wherein the band-brake device is directly connected between a fulcrum of a manual lever and a manual action point. Alternatively, a fluid generating device including a fluid cylinder having one end coupled to the other end via a link device and the other end coupled to a base and having a retractable rod, and reciprocating the fluid cylinder, and controlling the fluid generation device A cylindrical long object unloading device, comprising: a control unit for controlling the control unit; and a remote control device capable of wirelessly issuing a control signal to the control unit.