JPH066156Y2 - Forklift bale clamp device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a bale clamp device for a forklift, and more particularly to a bail clamp device effective for laterally shifting a load after transportation.

(Prior Art) Generally, in a bail clamp device, a rail holder is attached to the front surface of a lift bracket as an elevating member via a clamp base, and a pair of left and right clamp arms is attached to the rail holder so as to be movable in the left and right directions. The left and right clamp arms are moved toward and away from each other by a clamp cylinder to clamp and release the load. The clamp arm is composed of a rail portion that is moved left and right along the rail holder and an arm portion that horizontally extends forward to grip a load, and the arm portion and the rail portion are integrally fixed to each other. Has become. Such a bail clamp device is disclosed, for example, in Japanese Utility Model Laid-Open No. 58-95990.

(Problems to be solved by the invention) By the way, a bale clamp device is often used for loading a cargo (generally a carton) into a container, but when the cargo is stacked, it may be placed between adjacent cargoes or on a wall. There is a problem that the stacking efficiency is poor because there is a gap (a gap larger than that unless the user is skilled) corresponding to the thickness of the arm portion of the clamp arm. Of course, this problem occurs not only when loading containers, but also during general cargo handling. However, when the loading space is determined like containers, such loading efficiency Is an important problem, and therefore, in order to load without leaving a gap, it is necessary to manually shift the load laterally and correct its position after it is loaded into the container.

As another type of bale clamp device, the arm parts of the left and right clamp arms can be moved in the front-rear direction, that is, the guide member is fixed to the rail part of the clamp arm, and the arm parts can be moved back and forth on this guide member. There is known a bail clamp device of the type attached to the above (see Japanese Utility Model Laid-Open No. 58-95994). In this, the left and right clamp arms are simultaneously extended forward so that the cargo handling work can be performed in a recessed place, and the work such as shifting the load laterally cannot be performed.

Therefore, in view of the above problems, it is an object of the present invention to provide a bale clamp device for a forklift capable of laterally shifting the load after the load is loaded.

(Means for Solving Problems) In order to solve the above problems, the present invention is configured as follows. That is, in the bale clamp device for a forklift having a pair of left and right clamp arms on the front surface of the clamp base, one of the clamp arms is configured to be able to move forward with the arm portion of one clamp arm as the original position. It is characterized by having done.

(Operation) Therefore, after the load clamped by the left and right clamp arms is carried into a predetermined place, the arm portion of the clamp arm moves the vehicle backward as much as the arm can retract from the side of the load, and the arm of one clamp arm moves. By moving the part forward, the arm part is opposed to one side surface of the load, and in such a state, the load can be laterally displaced by moving the clamp arm inward, that is, in the clamp direction.

(Embodiment) An embodiment of the present invention will be specifically described below with reference to the drawings. First, the embodiment shown in FIGS. 1 to 5 will be described. In the figure, reference numeral 1 denotes a lift bracket as an ascending / descending member that is moved up and down along a mast 2 of a forklift. Four
Two are fixed horizontally. A pair of left and right clamp arms 5R and 5L are attached to the rail holder 4 so as to be movable in the left and right directions, and the clamp arms 5R and 5L are individually moved by the clamp cylinders 6R and 6L. On the other hand, the clamp arm 5L (on the left side in this embodiment) is welded to the rail holder 4 by a rail portion 7 and a luggage holding arm portion 8 which can be moved left and right via guide rollers (not shown). The clamp arm 5R has the one-piece structure fixed by
Is a movable type in which an arm portion 10 for gripping a load is attached to a rail portion 9 which is movable left and right on a rail holder 4 via guide rollers (not shown) and is movable in the front-rear direction via a guide member 11. Has become.

Hereinafter, the movable clamp arm 5R will be specifically described. The guide member 11 for arm guiding, one end of which is fixed to the rail portion 9, is composed of a pair of upper and lower groove members that extend horizontally in the forward direction, and these members are vertically spaced by a predetermined distance with the grooves facing each other. Installed on the outside and tie plate 1 on the outside (opposite side of the clamp surface)
Two are connected to each other. On the other hand, the arm unit 10
Is arranged in the space sandwiched by the upper and lower guide members 11, and its longitudinal cross section is formed in the shape of a vertically elongated rectangular hollow box that is long in the front-rear direction. A clamp plate 13 having a size capable of covering the is fixed. The upper and lower parts of the clamp plate 13 are the guide members 11 respectively.
Extending vertically beyond the upper end and the upper end of the guide member 11
Is folded back so as to cover the entire surface, and the lower end is bent to the rear side, whereby the cover is also used.

Further, the arm portion 10 configured as described above includes a pair of front and rear guide rollers 14 on each of the upper and lower plates 10a and 10b at the rearward position, and the guide rollers 14 are provided.
It is attached to the guide member 11 via the so as to be movable back and forth. Then, in the arm portion 10, the arm portion 10
A hydraulic cylinder 15 is housed as an operating means for moving back and forth. The base of the hydraulic cylinder 15 is connected to the rail 9 and the piston rod 16 is connected to the front plate 10c of the arm 10.

The bail clamp device of this embodiment is configured as described above, and its operation will be described below. First, when the luggage W is clamped, as shown in FIG. 1, the clamp cylinders 6R and 6L are operated in the same manner as in the conventional art while the arm portion 10 of the movable clamp arm 5R is held in the original position, and the left and right clamps are operated. By simultaneously moving the arms 5R and 5L inward, the load W can be clamped as shown in FIG.

Then, the load W is transported to a predetermined place and the left and right clamp arms 5R and 5L are moved to the outside to release the clamp. However, if the load W is to be laterally displaced after that, the vehicle is clamped to the clamp arm 5R. ， 5L is luggage W
Of the movable clamp arm 5R by moving the arm portion 10 of the movable clamp arm 5R forward along the guide member 11 after the hydraulic cylinder 15 is extended to the side where the load W can be retracted. In such a state, the movable clamp arm 5R is moved inward, that is, in the clamp direction in such a state that the load W can be laterally displaced. Therefore, for example, as shown in FIG. 5, it is possible to stack the loads W on the wall or the like without any gap. The left and right clamp arms 5L, 5
Usually, the inward and outward movements of R are configured so as to move simultaneously. Therefore, the movable clamp arm 5R is
When the load W is laterally displaced by the load W, the clamp arm 5L on the opposite side also moves inward, but since the clamp arm 5L is shorter than the movable clamp arm 5R in the extended state, as shown in FIG. Will not interfere with.

Next, another embodiment of the present invention will be described with reference to FIGS. 6 and 7. In this embodiment, both the left and right clamp arms 5R and 5L are movable and can be operated independently. That is, as shown by phantom lines in FIG. 6, the arm portions 8 and 10 of both clamp arms 5R and 5L can be moved forward, respectively, while the arm portions 8 and 10 are moved.
Hydraulic cylinders 15R, 1 as operating means for moving
As shown in FIG. 7, the 5L is configured so that it can be individually operated by a dedicated manually operated oil control valve 17R, 17L.

Therefore, according to this embodiment, it is of course possible to carry out the work of laterally shifting the loaded goods as in the above-mentioned embodiments, and in particular, it is possible to shift the cargo in either the left or right direction. It is possible to effectively load luggage depending on the situation.

In this embodiment, the cylinder is used as the actuating means for moving the arm portion, but the present invention is not limited to this, and may be changed to a chain transmission mechanism using a motor as a drive source.

(Effect of the Invention) As described in detail above, according to the bale clamp device of the present invention, after the load is carried into a predetermined position, the load can be laterally displaced as necessary, so that the load or the wall can be moved. It is possible to stow adjacent cargoes without any gaps, which is particularly effective in a container or the like having a constrained stowage space, which greatly contributes to improvement of stowage efficiency.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an overall perspective view of a bail clamp device, FIG. 2 is a side view of a movable clamp arm with an arm portion moved forward, and FIG. 3 is a movable type. Front sectional views of the clamp arm, FIGS. 4 and 5 are schematic plan views showing an operating mode, FIG. 6 is a schematic plan view showing another embodiment of the present invention, and FIG. 7 is a hydraulic pressure in another embodiment. It is an operating circuit diagram of a cylinder. 1 ... Lift bracket, 3 ... Clamp base 4 ... Rail holder 5R, 5L ... Clamp arm 6R, 6L ... Clamp cylinder 9 ... Rail part, 10 ... Arm part 11 ... Guide member, 15 ... Hydraulic cylinder

Claims (2)

[Scope of utility model registration request] 1. A bail clamp device for a forklift having a pair of left and right clamp arms on a front surface of a clamp base, wherein one of the clamp arms moves forward with an arm portion of one clamp arm as a normal clamp position. Bale clamp device for forklift trucks configured to be possible. 2. The one clamp arm includes a rail member that is guided by a rail holder of a clamp base for lateral movement, and a pair of upper and lower guides that are fixed to an outer end portion of the rail member and extend in parallel forward. A member and an arm member for a clamp which is guided by the guide member and is moved forward,
The veil clamp device for a forklift according to claim 1, wherein the utility model registration comprises an operating means for moving the arm member.