JP2524890Y2 - Forklift truck 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 clamping device for a forklift truck which can easily switch between fork operation and clamping operation.

[0002]

2. Description of the Related Art Conventionally, a forklift truck is provided with a pair of forks, and a cargo handling operation is performed by inserting these forks into a pallet on which cargo is loaded. Also, when the cargo is like a cylinder,
Conventionally, as shown in FIG. 1, a clamp holder d is attached to a fork b of a forklift truck a with a pin c, and a cargo is clamped between the clamp holders d to perform cargo handling. 2 to 4 show structural views of a conventional clamp holder.

[0003]

However, in the above-mentioned conventional clamping device, it is necessary to attach the clamp holder d to the fork b every time the clamping operation is performed. The clamp holder d must be attached and detached each time, and the operation is troublesome. In addition, it is necessary to always mount the clamp holder d and the pin c in the driver's seat to perform the replacement work during the work, which hinders the work. There were also problems such as. The present invention has been made for the purpose of improving the above-mentioned disadvantages, and an object of the invention is to provide a clamping device for a forklift truck which can easily switch between a fork operation and a clamping operation.

[0004]

According to the present invention, in order to achieve the above object, a mast provided on a front portion of a vehicle body is provided with a finger board which can be moved up and down, and the finger board is moved toward and away from the finger board by a clamp cylinder. In a forklift truck having a pair of forks movable to a forklift, a base portion of a clamp holder is pivotally attached to each of the forks so as to be able to move up and down, and a grasping portion for clamping a cargo is provided at a distal end portion of each of the clamp holders. It is provided.

[0005]

According to the above configuration, switching between the fork operation and the clamp operation can be performed only by raising and lowering the clamp holder, thereby greatly improving workability.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. In FIG. 5, reference numeral 1 denotes a vehicle body of a forklift truck, and a mast 2 is provided upright at a front portion, and a finger board 3 is attached to the mast 2 so as to be vertically movable. On the front of the finger board 3,
A plurality of horizontal rods 5 movable in the left-right direction are supported by a clamp cylinder 4, and forks 6 are respectively attached to outer ends of these horizontal rods 5. A clamp body 7 is mounted near the bent portion of each fork 6.

The clamp body 7 has a pair of undulating clamp holders 8. The clamp holder 8 has a substantially U-shaped cross section with an open lower surface, and has a base end pivotally attached to a bracket 9 protruding from the front surface of the fork 6 by pins 10. The tip side is rotatable in the vertical direction. The distal end side of each of the clamp holders 8 protrudes forward along the fork 6, the distal end portion is bent inward, and gripping portions 8a each having a substantially V shape are fixed to surfaces of the distal end portions facing each other. A pad 11 made of an elastic material such as rubber is attached to the gripping surface of the gripping portion 8a, and the clamping force is applied to the back surface of the gripping portion 8a by contacting the side surface of the fork 6. Bush 1 to be transmitted to
2 are installed. The bush 12 is also formed of an elastic body such as rubber.

On the other hand, a locking pin 13 for locking the clamp holder 8 in an upright state is removably fitted in the bracket 9 on which the clamp holder 8 is mounted so as to be able to rise and fall. The locking pin 13 has a spring 14 at its neck as shown in FIG.
In addition, a rotatable claw body 13a is provided at the tip end,
As shown in FIG. 10, the pin 13 a is inserted into a pin hole 9 a formed in the bracket 9 and rotated in a direction orthogonal to the claw 13 a locking pin 13 so as not to come off from the pin hole 9 a.

Next, the operation will be described. In the case of loading and unloading using a fork, as shown in FIG.
Is raised along the vertical portion of the fork 6, and the locking pin 13 is inserted into the pin hole 9a of the bracket 9 to lock the clamp holder 8 so as not to fall.
In this state, the fork work can be performed by inserting the tip of the fork 6 into the pallet 15 and performing the work. Next, when performing a clamping operation following the fork operation, the locking pin 13 is removed, and each clamp holder 8 is rotated about the pin 10 to the position shown in FIG. In this state, each fork 6 is moved in the contact / separation direction by the clamp cylinder, thereby clamping the cylindrical cargo 16 between the pads 11 provided on the grip portion 8a as shown in FIG. Work can be done. In addition, since the clamping force at this time is transmitted to the fork 6 via the bush 12, an excessive clamping force is not applied to the pivotally attached portions of the clamp holders 8.

If the bracket 9 of the clamp body 7 is made detachable with respect to the fork 6, the clamp body 7 can be removed from the bracket 9 at the time of fork work, whereby the center of load at the time of loading can be further increased.
Can be brought closer to the root of the vehicle, so that heavy loads can be handled. In the above embodiment, the clamp holder 8 is manually raised and lowered. However, the clamp holder 8 may be raised and lowered by hydraulic pressure or pneumatic pressure by providing a lifting cylinder.

[0011]

[Effect of the Invention] As described in detail above, the present invention mounts the clamp holder on the fork so that the clamp holder can be raised and lowered, so that the clamp holder is obstructed by storing the clamp holder in an upright state during fork work. Fork work can be done without becoming. Also, in the clamp operation, the clamp holder can be clamped by setting the clamp holder in a substantially horizontal position, and the switching between the fork operation and the clamp operation can be easily performed only by raising and lowering the clamp holder. It does not require any troublesome desorption work. Further, by making the clamp holder undulateable by the undulating cylinder, the undulation of the clamp holder can be performed while sitting in the driver's seat, so that the workability is further improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing a forklift truck equipped with a conventional clamping device.

FIG. 2 is a plan view of a conventional clamping device.

FIG. 3 is a side view of a conventional clamping device.

FIG. 4 is a rear view of a conventional clamp device.

FIG. 5 is a side view of a forklift truck equipped with a clamp device according to an embodiment of the present invention.

FIG. 6 is a plan view showing a use state of the clamp device according to one embodiment of the present invention.

FIG. 7 is a view as viewed from the direction of arrow A in FIG. 6;

FIG. 8 is a sectional view taken along the line BB of FIG. 6;

FIG. 9 is an explanatory diagram of a locking pin.

FIG. 10 is an explanatory view showing a use state of a locking pin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Mast 3 Finger board 4 Clamp cylinder 6 Fork 8 Clamp holder 8a Gripping part 9 Bracket 16 Cargo material

Claims (3)

(57) [Scope of request for utility model registration] 1. A finger board 3 is provided on a mast 2 erected at a front portion of a vehicle body 1 so as to be vertically movable, and a pair of forks 6 which are movable in a contact / separation direction by a clamp cylinder 4 are attached to the finger board 3. In the forklift truck, the base end of the clamp holder 8 is pivotally attached to each of the forks 6 so as to be able to move up and down.
A forklift truck clamping device provided with a gripper 8a for clamping a cargo 16 at a tip end of the forklift truck. 2. The clamping device according to claim 1, wherein each of the clamp holders 8 can be raised and lowered by a lifting cylinder. 3. A bracket 9 for supporting each clamp holder 8 is detachable from the fork 6.
The clamping device as described.