JPS5931676Y2 - Winch device for forklift truck - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winch device for mounting on a forklift truck for crane work.

Conventionally, in a winch device for a forklift truck, a sheep 21 is rotatably attached to the tip of a crane boom 20, as shown in FIGS. 23 is connected, and the other end of the wire rope 22 is connected to a separately provided hoisting drum 24, and the prime mover is connected to the hoisting drum 24.
Cargo handling work was carried out by rotating the hook 23 and raising and lowering the hook 23.

However, due to the relative relationship between the widths of the sheep 21 and the hoisting drum 24, this device may cause the wire rope 21 to fall out of the U-shaped groove of the sheep 21, causing the sheep 21 and the boom 24 to
From a safety standpoint, in order to prevent the wire rope 22 from getting caught in the gap in the housing and being damaged, the restrictions in the structural standards (Article 21 of the Crane Structural Standards)
As shown in the figure, the allowable width range of the performance drum 24 is determined by law based on the U-shaped groove of the sheep 21.

That is, on a line passing through the center of the groove of the sheep 21 and the center of the width direction of the hoisting drum 24, the angle θ is limited to within 2° on one side with the sheep 21 as the reference point.

Therefore, the length of the hoisting drum 24 corresponds to the length of the boom 20.
Since the width of the wire rope 22 is determined, in the case of a small crane such as a forklift, the hoisting drum 24 is necessarily reduced in size, and the capacity for accommodating the required length of the wire rope 22 is insufficient. It was in a state of

When this device is attached to a telescoping boom with a housing, Vc
In this case, the lifting and lowering of the hook 23 is affected by the boom extension/retraction operation, so the height of the hook 23 must be adjusted by simultaneously performing the boom extension/retraction operation and the rotation operation of the hoisting drum 24 each time. There was a problem with the operation of having to do so.

The purpose of this invention is to eliminate the above drawbacks.
A winch box containing a hoisting mechanism such as an oil motor, reduction gear, hoisting drum, and wire rope is attached to the tip of the extendable lane arm, and a hook is connected to the wire rope hanging directly from the hoisting drum. To provide a winch device which suspends a load, is constructed integrally with a fork, and is detachable from a front elevation member of a forklift.

The present invention will be explained in detail below based on the illustrated embodiments.

In FIG. 1, a winch device A, which will be described later, is attached to an elevating member 2 that is movable up and down along a mast 1 of a forklift truck.
It is attached by bK.

This winch device is arranged parallel to a base plate 3 and a mast 1 which are removably attached to the elevating member 2 by an attachment hook 3a etc. protruding from the back side, and the lower end is located approximately in the center of the base plate 3. A fixed vertical arm 4, an extendable lane arm whose base end is fixed to the upper end of the arm 4 and which is disposed perpendicular to the vertical arm 4, and a horizontal arm located on both sides of the arm 4. A vertical portion 18b is constituted by a pair of forks 18 fixed to the base plate 3 so as to form an appropriate vertical space between the portion 18a and the crane arm.

Further, the crane arm is composed of two members, a horizontal arm 5 and a sliding arm 6, and the horizontal arm 5 is sheath-shaped and has a groove-shaped opening carved in its upper wall from the tip to the center. A bracket 7 is provided at an appropriate position on the upper surface of the sliding arm 6 which is slidably fitted into the arm 5, and this bracket 7 is fitted into the groove-shaped opening of the horizontal arm 5 and slide along the section.

Reference numeral 9 denotes a reach cylinder, the base end of which is fixed to the earthen wall of the horizontal arm 5, and the tip of the piston rod extending from the cylinder 9 connected to the bracket 7 protruding from the groove-shaped opening.

In the figure, 10 is a winch box 10 fixed to the tip of the sliding arm 6, and as shown in FIG. A hoisting mechanism such as a large gear 13 meshing with the small gear 12 and a hoisting drum 14 connected to the large gear 13 is all housed inside.

Reference numeral 15 denotes a wire rope, one end of which is fixed to and wound around the hoisting drum 14, and a hook 16 is connected to the other end and hangs down.

Reference numeral 17 denotes a load suspended by the hook 16.

The present invention has the above-mentioned configuration, and its operation will be explained below.

A reach cylinder 9 connected to a hydraulic circuit (not shown) of the forklift truck via an oil feed pipe (not shown) is operated by an operating lever (not shown) provided on the driver's seat.
By moving the bracket 7 forward along the groove-like opening of the horizontal arm 5, the sliding arm 6 is extended forward.

At the same time, the oil motor 11 is driven to the rewinding side using the operating lever to rewind the wire rope 15 and hook 16.
descend.

Therefore, as shown in FIG. 1, the hook 16 is hooked to the load 17 that is lower than the ground contact position of the forklift or in front of the fork 18, and the hoisting operation is performed so that the bottom surface of the load 17 is above the top surface of the fork 18. When it is suspended, hoisting is stopped, the reach cylinder 9 is operated, the sliding arm 6 is housed in the horizontal arm 5, and the cargo 17 is mounted on the fork 18.

Next, the lift member 2 is raised by the operating lever to a height at which the forklift can travel, and then the cargo 17 is transported to a predetermined location.

Moreover, when this forklift is used solely for the purpose of forklifts, this winch device can be easily removed from the elevating member 2.

1) After touching the fork 18 to the ground, remove the pole) 3b,
If the board 3 of the winch device A and the elevating member 2 are unfastened and the elevating member 2 is further lowered, the attachment hook 3 will be removed.
The connection between a and the elevating member 2 is completely released.

Therefore, when the winch device is not in use, the winch device can be stably stored in the forked position 1 by means of the integrally constructed fork 18 as shown in FIG.

As mentioned above, the present invention is equipped with a winch box containing an oil motor, reduction gear, hoisting drum, wire rope, etc. at the tip of the crane arm, and the wire rope is suspended directly from the hoisting drum. The effective length of the rope is ensured, the height of the hook remains constant even when the crane arm length is expanded or contracted by the twisted or sliding arm, and the winch device is integrated with the fork, making it easy to store. It has various effects such as stability and ease of attachment and detachment.

[Brief explanation of the drawing]

Figure 1 is a side view of a forklift truck equipped with the winch device of the present invention, and Figure 2 is the winch box of the present invention! FIG. 3 is a side view showing the winch device of the present invention removed from a forklift truck; FIG. 4 is a partially sectional front view taken along line E in FIG. 3; FIG. 5 is a partial side view showing a conventional winch device, and FIG. 6 is a plan view showing the relationship between the sheep and the hoisting drum according to structural standards. 3... Board, 3a... Attachment hook, 4... Vertical arm, 5... Horizontal arm, 6... Sliding arm, 10... Winch box, 18... Fork.

Claims (1)

[Scope of utility model registration request] A board is removably attached to an elevating member that moves up and down along the mast, and the base end of a vertical arm parallel to the mast is fixed to the center of the front surface of the board, and the fork is fixed to the left and right ends of the front surface, and the upper end of the vertical arm. A winch box containing a performance drum etc. is fixed to the tip of the part,
A winch device for a forklift truck, wherein the middle part is fixed to the base end of an extendable lane arm parallel to the horizontal part of the fork.