JPS5948391A - Drive for hydraulic winch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic winch operating device with improved operability.

Construction machines such as hydraulic cranes are equipped with various operating levers depending on their functions, and the performance of the machine is evaluated by the number of levers installed. There is a limit to the number of installations of , shi/<-.Therefore, it is possible to perform many operations with as few renos as possible! be caught.

By the way, in order to operate the 1-inch oil, there is a direction control 100 that controls the rotation direction of the hydraulic motor and selects hoisting or lowering, and the rotation of the hydraulic motor is transmitted to the winch drum. Two types of control are required: clutch control. Conventionally, two levers, a hoisting lever and a clutch lever, were used to control the direction and clutch individually. Therefore, for example, in packet work,
When a packet is allowed to freely fall into the earth and sand, it is grasped, and then it is to be loaded into a dump truck, etc., first, the deer direction control valve is switched to the hoisting position using the hoisting lever, and then the clutch lever is turned to the hoisting position.
Turn on the shift latch, wind up the packet, return the clutch lever to neutral, and at the same time activate the foot brake to stop the packet, then turn the packet to a predetermined position, and then apply the 40 foot brake. Two operations are required: releasing the clutch to allow the packet to fall freely, and then operating the clutch lever again to wind up the packet.

Conventionally, two operating levers, a hoisting lever and a clutch lever, must be operated, which is cumbersome to operate and has poor work efficiency. This increases the amount of space required for levers in the hydraulic crane, which is an obstacle to adding other functions to the hydraulic crane.

In view of these points, the present invention reduces the number of operating levers, simplifies winch operation, reduces the space required for the levers, and uses oil rE, which is advantageous when adding other functions to a hydraulic crane. This provides a quinch operating device.

The present invention provides an operating device for a +1.1l LE winch in which the clutch lever is omitted and the hoisting lever also serves as the clutch lever, thereby reducing the required spacing of the lever, and
An electromagnetic selection button is provided that can be freely switched between the first and second working positions using a changeover switch, and by switching this electromagnetic toothed valve to the first working position, -1st pressure of the remote control valve can be adjusted. With the clutch turned on, the secondary pressure I and the direction control pressure of the remote controller are controlled using
By facilitating the inching control (n1) of the power drop 11,'i, and by switching the T-magnetic tooth selection valve to the second working position, the primary pressure of the remote control valve can be used to control the direction feed control to the hoisting position. 4', the clutch is controlled by the secondary pressure of the remote control valve in the state where the clutch is held at 4' and 1, so that switching control from free descent to hoisting can be performed quickly and easily. It is.

Hereinafter, the present invention will be explained based on the actual examples shown in the drawings.

In the figure, 1 is the Ragetsuou pump, 2 is the direction control pump 1'#
, 31rJ:, Kakunta Balance Intermediate, 4. V, r overrot ° relief valve, 5 is a hydraulic motor, 6-1ωj force transmission unit f1'7), 7 is a clutch, 8-piece winch drum, 9 is a brake, 10-piece hydraulic pump for operation, 11 is a remote control valve, Reference numeral 12 indicates a relief valve, 13 indicates an electromagnetic selection valve, and 14 indicates a changeover switch. These lrj are connected as shown in the figure, and the directional control valve 2 guides the discharged oil of the hydraulic pump 1 to the hydraulic motor 5 to control the oil T-ball mortar 5. The winch drum 8 is rotated in the hoisting or hoisting direction, and the rotation of the hydraulic motor 5 is transmitted to the winch drum 8 via the power transmission mechanism 6 and the clutch 7, and the winch drum 8 is rotated by 1±. In addition, 20 is a 4-nick valve, and 21 is an accumulator.

The remote control valve 11 has a pair of variable pressure reducers 4La, 111], into which pressurized oil is introduced from the operating hydraulic pump 10, and the lever Llc is operated (from this, the first operating circuit 15 and the second operating circuit 16 selectively derives the secondary pressure, and
The secondary pressure can be controlled according to the operating angle of the lever 11c.

The first operating circuit 15 is connected to one pilot boat of the direction control valve 1 and 2, and the direction i++J a valve 2 is connected to the lower part:
This is a lowering operation circuit for switching to i'l2a.

Between the electromagnetic selection valve 131-t, the second operating circuit 16 and primary circuit 17 of the IJ control valve 11, and the hoisting operating circuit 18 and clutch operating circuit I9 connected to the other pilot boat of the directional control valve 2. Provided with selector switch 1
4, when the second operation circuit 16 is connected to the hoisting operation circuit 18, the primary circuit 17 is connected to the clutch operation circuit 19.
1 connection to the 1st working position 1983, and 5 second operation circuits 1
6) to the clutch operation circuit 19) and the primary 1. 1B] 7 to the winding operation port +618 (second working position 131, which is 5゛).

Next, the effect will be explained.

First, when performing general winch work, turn off the changeover switch 14, demagnetize the electric selector 13, and hold it in the first working position 13a as shown in the figure.
Operate the operating levers 1] and c once in the direction of arrow A or B.

At this time, since the electric selection valve 13 is held at the first working position 13a, the oil discharged from the operating oil evoship 10 is guided from the primary circuit 17 to the clutch operation circuit 19, and the clutch 7 is turned on. . In this state, by tilting the lever 11c one turn in the direction of arrow A or B, 5. remote control valve 11
Secondary pressure is outputted to the first operating circuit 15 or second operating circuit 1G of
is switched to the hoisting down position 2a or the hoisting position 21], the discharge oil of the hydraulic pump 1 is guided to the 711j king motor 5, the hydraulic motor 5 is rotated in the hoisting down or hoisting direction, and the rotation is the 1RIJ force transmission. The power is transmitted to the winch drum 8 via the mechanism 6 and the clutch 7, and hoisting and hoisting operations are performed by lowering the power of the suspended load.

In this way, switch 4 is turned off, and electromagnetic selection +1 is selected.
3 is demagnetized and held at the first working position L3a, the clutch 7 is always turned on by the primary pressure of the remote control valve 11, so there is no need to operate the clutch lever as in the conventional case, and the By simply operating the operating levers 1c and 1c, the directional control 1 and 2 can be easily controlled to control the power lowering and hoisting of the suspended load, improving operability and work efficiency.

In addition, during this work, since the clutch 7 is always on, if the lever 11c is returned to the neutral position, the directional control valve 2 is returned to the neutral position 2C, the hydraulic motor 5 is stopped, and the hydraulic motor 5 is stopped. At the same time as the winch drum 8 is held by the lever 11c, the winch drum 8 is also stopped. Therefore, the suspended load can be held without operating the brake 9, and the secondary pressure of the remote control valve 11 is controlled according to the operating angle of the lever 11c.
, the spool opening of the direction control insert 2 [-I can control the top of the surface, the rotation speed of the hydraulic motor 5 can be controlled, and the inching control 1 can be controlled.
] can be done easily.

Next, when performing free-fall work such as bagut work, the electromagnetic three-plate valve 13 is magnetized by the changeover switch 14 to the second working position 131). 71, operate the operating lever 11c of the remote valve 11 four times in the force direction of arrow B.

In this case, the primary pressure of the remote control valve 11 is -・Next circuit 17
The secondary pressure of the remote control valve 11 is guided from the second operating circuit 16 to the clutch operating circuit 19. For this reason, the direction control hall 11-2 is at the hoisting position 21]
, the discharge oil of the hydraulic pump I is sent to the hoisting side of the hydraulic motor 5, and the ill, I l king moke 5 is constantly rotated in the direction of the hoisting force, but the lever 11c must be kept in the neutral position. For example, the secondary pressure of the remote control valve 11 is not led to the clutch 7, which prevents the clutch from being turned off.
The rotation of the winch drum 5 is not transmitted to the winch drum 8, and the winch drum 8 is in a free state. Therefore, by turning off the brake 9 at this 1' angle, the suspended load can be lowered 100 feet, and by turning on the brake 9, the lowering can be stopped, allowing free descent with only the brake operation. Can be controlled and controlled.

In this way, when the brake is operated, J: After freely descending, if the Reno-11c is tilted in the direction of arrow B, the secondary pressure of the remote control valve 11 will be released from the second operating circuit 16.
frl, jg+ to clutch operation port i each 19 via 3
9, clutch 7 is turned on, ``)'rf 11.4;
Turn in the hoisting direction liz: Turn 1 of the hydraulic motor 5 in XL
The tension is transmitted to the winch drum 8 via the power transmission 3m mechanism 6 and the clutch 7, the finch drum 8 rotates in the hoisting direction, and the suspended load is hoisted.

Add one more electromagnetic selection 6 = 13 to the second working position 131]
If it is switched to 143, the free fall of the hoist can be controlled by operating the brake, and the force restraint tiIi + 2 can be switched to the lowering position by the primary force of the remote control valve 11.
Since the hydraulic motor 5 is always widened to the hoisting blade 1 "1", the clutch 7 is turned by the secondary force of the remote control valve 11 by simply tilting the lever Llc in the force direction of the arrow B. It is possible to perform hoisting operation from 1'1 mountain descent to hoisting operation quickly and easily. By gradually tilting the remote control valve 11 in the opposite direction, the secondary pressure of the remote control valve 11 is gradually increased and the clutch 9 can be turned on gradually, thereby enabling hoisting start with less shock.

As explained above, according to the present invention, Q':J', by changing the city magnet selection button ↑- to 1 according to the work content, Ichiki's paper)<-JQ, winding up after 14 productions. , lowering operation,
Freedom 1 (lowering and hoisting t2J 4'j% etc. can be easily performed, and operation (1) can be improved to a human level. Moreover, the conventional hoisting lever and clutch lever can be Since the space can be saved, the space in the cockpit can be expanded accordingly.Also, when applying the present invention to an existing hydraulic crane, one of the hoisting lever and clutch lever can be removed. By using the lever of the present invention, the remaining lever can be used as the F-th work of one ton, and the function of a pressure crane can be added to contribute to the performance amplifier. The changeover switch is
It is different from the single lever operated by remote control, and can be easily installed in the extra space of the cockpit without taking up space.

[Brief explanation of drawings]

The drawing is a hydraulic circuit diagram showing an actual example of the present invention. ■... Part pump, 2... Directional feeding], 5...
Lower mork, 7...Clutch, 8...Winch drum, 10...AIJ pressure pump for operation, 11...Remote control-fj-1Llc...Lever, 13...Solenoid selection valve, 14. ... Selector switch, 15... First operation circuit (lower operation circuit), 16... Second operation circuit, 17.
...-Next circuit, 18... Hoisting operation circuit, 19...
Clutch] - Clutch circuit. Patent applicant: Kobe Steel, Ltd. Iyayu 7, ゎ□□Yo, 1, 6
,Yo1,Toomote:,N,>.

Claims (1)

[Claims] 1. A remote control valve that controls the secondary pressure by lever operation, a direction control valve that controls the rotation direction of the hydraulic motor, a clutch that transmits the rotation of the hydraulic motor to the winch drum, and a changeover switch 1 that performs the first operation. When the solenoid selection valve is in the first working position, the clutch is turned on by the primary pressure of the remote control valve, and the secondary pressure of the remote control valve When the directional control valve is controlled and the electric percentage selection valve is in the second working position, the directional control valve is switched to the hoisting position by the next pressure of the remote control valve, and the hydraulic motor is activated. An operating device for a hydraulic winch, characterized in that a shift latch is held in such a way that the latch is engaged by the primary pressure of a remote control valve when rotated in a hoisting direction.