JP2571336Y2 - Forklift clamping device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device for a forklift, and more particularly to a clamp device called a bale clamp for gripping a load from both sides.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show a conventional clamping device. As shown in the figure, a clamp base 23 formed in a rectangular frame shape is fixed to a finger bar 22 fixed to a lift bracket 21 that moves up and down along a mast of a forklift, and a front surface of the clamp base 23 is
Two upper and lower rail holders 24 each having a groove shape are fixed. A pair of right and left clamp arms 25 is disposed on the front surface of the rail holder 24, and the clamp arm 25 has a rail portion 26 movably attached to the rail holder 24 via a guide roller 27 and a side roller 28. The two clamp cylinders 29 arranged between the upper and lower rail holders 24 are moved toward and away from each other to be opened and closed. As such a clamping device, for example, Japanese Utility Model Laid-Open No. 55-17
017 can be mentioned.

[0003]

When a load is gripped by the left and right clamp arms 25, it is necessary to visually check the relative position between the gripping surface of the clamp arm 25 and the load in order to safely carry out the cargo handling operation. is important. In the cargo handling work by the clamp device, generally, luggage placed on a place such as the ground lower than the driver's seat is often handled, and in this case, the driver's line of sight on the driver's seat points obliquely downward. .

However, in the above-described conventional clamping device, when it is lowered so as to grasp the load placed on the ground, the rail holder 24, the rail portion 26 of the clamp arm 25, and the clamp cylinder 29 obstruct the front view. Becomes Therefore, as shown in FIG. 5, the driver can see the front only from above the uppermost rail holder 24, as indicated by the oblique lines in the visible range from the driver's seat. I could not confirm. Therefore, the operator must rely solely on the driver's intuition, and as a result, the workability is poor, such as the need for re-gripping due to defective clamping.

In view of the above-mentioned problems, the present invention provides a forklift clamp having an enlarged front view at the time of a clamping operation by providing a visible portion that allows a user to look forward when the clamp device is in a lowered state. Providing the device is a technical problem to be solved.

[0006]

Means for Solving the Problems In order to solve the above problems, the present invention is configured as follows. That is, a plurality of rail holders are horizontally fixed at predetermined intervals vertically to the front surface of the clamp base that moves up and down together with the lift bracket, and the rail portions of the pair of left and right clamp arms move in the left and right directions on the rail holders. A clamp device for a forklift, wherein both of the rail holder and the rail of the clamp member are set to be inclined forward and downward, and a forwardly inclined space between the rail holder and the rail is provided. Is formed.

[0007]

The cargo handling operation by the clamp device of the forklift is often performed on the luggage placed at a position lower than the driver's seat, and the driver's line of sight at this time is directed obliquely downward. Therefore, since the forwardly inclined space set between the rail holder and the rail portion is in the same direction as the driver's line of sight, it is possible to confirm the front through this inclined space. That is, in the forklift clamping device according to the present invention configured as described above, when grasping a luggage placed at a place lower than the driver's seat on the ground or the like, the inclined space can be seen from the front. And the front view is enlarged.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. First, a forklift clamping device according to a first embodiment will be described with reference to a side view of FIG. 1 and a front view of FIG. As shown in the figure, a clamp base 3 formed in a rectangular frame shape is attached to a finger bar 2 fixed to a lift bracket 1 that moves up and down along a mast (not shown) of a forklift via upper and lower hooks 4. Have been.

On the front surface of the clamp base 3, four rail holders 5 having a groove shape in cross section are fixed horizontally in the left-right direction at predetermined intervals vertically. The upper two rail holders 5 are arranged with the opening side facing downward, and the lower two rail holders 5 are arranged with the opening side facing upward. As shown in FIG. 1, each of the rail holders 5 is set to be inclined forward and downward in the front-rear direction and parallel to each other.

On the front surface of the rail holder 5, a pair of left and right clamp arms 6 as clamp members are arranged. Each of the clamp arms 6 has two upper and lower rail portions 7, respectively. Each rail portion 7 is arranged corresponding to the rail holder 5. Specifically, the upper two rail portions 7 are on the lower surface side of the rail holder 5 and the lower two rail portions 7 are provided.
Are arranged on the upper surface side of the rail holder 5 and guide rollers 8
And can be moved in the left-right direction via side rollers 9.

The left and right clamp arms 6 are connected to the upper
The two rail holders 5 and the two lower rail holders 5 are configured to be opened and closed by being moved toward and away from each other by two clamp cylinders 10 disposed between the two rail holders 5. The clamp cylinder 10 has one end fixed to the clamp base 3 via a bracket 10a.
The rod side is fixed to the clamp arm 6 via a bracket 10b.

Thus, the rail portion 7 of the clamp arm 6
Is set parallel to the rail holder 5 in the front-rear direction, that is, in a downwardly inclined shape. As a result, a downwardly inclined space as shown in FIG. 1 is formed between the rear surface of the web 5b of the rail holder 5 and the rail portion 7 and between the rail portion 7 and the clamp cylinder 10. Becomes

The guide roller 8 is rotatably mounted around an axis perpendicular to the inclined surface of the rail portion 7, and its circumferential surface rolls on the flange 5 a of the rail holder 5. On the other hand, the side roller 9 is rotatably mounted around an axis parallel to the inclined surface of the rail portion 7, and its circumferential surface rolls on the web 5 b of the rail holder 5.

The clamp device of the present embodiment is constructed as described above. FIG. 1 shows the clamp device visible from the driver's seat through a forwardly inclined space formed between the rail holder 5 and the rail portion 7. Ranges A to E are indicated by oblique lines. Therefore, according to the clamping device of the present embodiment, the driver can check the front through the inclined space during the lowering and in the lowering state, so that the gripping operation can be performed only from the uppermost rail holder 5. The front view is greatly expanded as compared with the related art in which the situation cannot be confirmed.

Next, a second embodiment of the present invention will be described with reference to FIG. This embodiment is applied to a pallet fork, and is completely the same as the first embodiment except that the clamp arm 6 as the clamp member described in the first embodiment is replaced with a clamp fork 11. ing. Therefore, also according to this embodiment, it is possible to obtain the effect of expanding the front view when grasping the load.

Although the illustrated embodiment shows a case where the inclination angles of the inclined spaces formed by the rail holder 5 and the rail portion 7 are all set in parallel, the inclination angles of these inclined spaces are determined by the clamp angles. When the device is at the lowest position, it is desirable to set the height in parallel with the driver's line of sight according to the height of the driver's seat. Therefore, the inclination angle of the inclined space with respect to the horizontal line may be set so that the inclination angle of the lower inclined space is larger than that of the upper inclined space.

[0017]

[Effect of the Invention] As described in detail above, according to the present invention,
In the forklift clamping device, the front view at the time of gripping the load can be expanded, which greatly contributes to the improvement of safety and the efficiency of the cargo handling operation.

[Brief description of the drawings]

FIG. 1 is a side view of a forklift clamping device according to a first embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of a forklift clamping device according to a second embodiment.

FIG. 4 is a perspective view showing a conventional clamping device.

FIG. 5 is a side view showing a conventional clamping device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lift bracket 3 ... Clamp base 5 ... Rail holder 6 ... Clamp arm 7 ... Rail part

Claims (1)

(57) [Scope of request for utility model registration] A plurality of rail holders are horizontally fixed at predetermined intervals vertically to a front surface of a clamp base that moves up and down together with a lift bracket, and a pair of left and right clamp arms are fixed to the rail holders. A forklift clamping device movable in a direction, wherein both the rail holder and the rail portion of the clamp member are set to be inclined forward and downward between the rail holder and the rail portion. Forklift clamping device that forms an inclined space.