JPS6141760Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cargo handling clamp device that does not cause the cargo to collapse even when a plurality of cargo objects are clamped at the same time.

Conventionally, this type of clamp device has a pair of clamp arms that can be opened and closed at the front of the cargo handling vehicle.
Cargo handling is carried out by clamping the cargo between these clamp arms. However, when multiple objects are clamped at the same time, some of the objects will fall downward due to their own weight.
There were drawbacks such as the cargo collapsing while driving, making it difficult to carry out cargo handling operations safely and efficiently.

This invention was made with the purpose of eliminating such drawbacks, and aims to improve the efficiency of cargo handling work by providing a cargo handling clamp device that does not cause cargo collapse even when multiple cargo objects are clamped at the same time. It is something to do.

This invention will be described in detail below with reference to an illustrated embodiment. In the figure, reference numeral 1 denotes a vertically movable finger board mounted on the mast of a cargo handling vehicle such as a forklift truck (not shown), and a main body 3 of the device is detachably attached to the finger board 1 via a hook 2. A clamp cylinder 4 is provided horizontally on the main body 3, and a pair of clamp arms 5 protruding forward from the main body 3 can be opened and closed in the approaching and separating directions by the clamp cylinder 4. Each of the clamp arms 5 has a parallel plate shape, and one end is supported by a support rod 6 that is slidably supported on the main body 3, and the clamp arms 5 are used for cargo handling on mutually opposing surfaces. It is now possible to clamp object A. Further, on the back side of each clamp arm 5, brackets 7 are provided projecting apart from each other in the front-rear direction, and on the opposing surface of these brackets 7, a guide member 8 having a substantially C-shaped cross section is provided.
are installed with their openings facing each other. Sliders 11 fixed to both ends of the support frame 10 of the support member 9 are fitted into these guide members 8 so as to be vertically slidable. Note that 12 is a stopper provided at the lower end of the guide member 8, and is for stopping the support frame 10 at the lower limit position.

On the other hand, the support member 9 is made up of a support frame 10 that moves up and down with respect to the clamp arm 5, and a movable frame 13 that is located parallel to the inside of these support frames 10. A pair, for example two pairs of X-shaped links 14 are interposed. These links 1
4 is a link member 14a, 14b whose intermediate portions are pivotally connected to each other by a pin 14c, and one end of one link member 14a is connected to the support frame 10 by a pin 15.
The other end is movably engaged in a long hole 13a formed in the movable frame 13. Furthermore, one end of the other link member 14b is movably engaged with a long hole 10a formed in the support frame 10, and the other end is pivotally connected to the movable frame 13 by a pin 16, and the length of the support frame 10 is Link member 1 engaged in hole 10a
A lever 17 is fixed to one end of the lever 4b, and a drive cylinder 19 is provided between the tip of the lever 17 and a bracket 18 protruding from the support frame 10.
As a result, each movable frame 13 is connected to the clamp arm 5.
It can move forward and backward in the horizontal direction below.

Therefore, when handling a plurality of cargo objects A at the same time, first, the cargo object A is positioned between the clamp arms 5 whose lower ends are grounded, and each clamp arm 5 is moved in the closing direction, and each clamp arm Clamp cargo A between 5 and 5. At this time, each support member 9
The lower end is pushed up from the road surface, etc., and is in the raised position as shown in FIG. Next, in this state, when each clamp arm 5 is slightly raised to form a gap below the cargo A, each support member 9 is also lowered by its own weight until the slider 10 comes into contact with the stopper 12. (See Figure 3). Therefore, when the drive cylinder 19 is extended in this state, one end of the link member 14b moves along the elongated hole 10a, so each link member 14a, 14b, which has been in the closed state, opens and moves the movable frame 13. As shown in FIG.
The lower surface of the holder is supported as shown in FIG. This makes it possible to safely transport the cargo A while traveling without causing the cargo A to collapse.

As described in detail above, this device is equipped with a pandagraph-shaped support member that is extendable and retractable in the direction orthogonal to each clamp arm by a drive cylinder at the lower part of the back side of the clamp arm that can be freely moved toward and away from the clamp arm. Since the load clamped on the arm is supported from below, even if a plurality of load objects are clamped at the same time, there is no risk of the load collapsing during travel. In addition, since the support member can be inserted below the load by simply raising the load clamped on the clamp arm a little, there is no risk of the load collapsing due to lifting the load too high, and when not in use, the support member can be inserted under the load. Since it can be stored compactly at the bottom of the side, there is less risk of it interfering with work or being damaged by colliding with obstacles during work.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a plan view, Fig. 2 is a side view, Fig. 3 is a side view during cargo handling, Fig. 4 is the same plan view, and Fig. 5 is a front view. be. 4 is a clamp cylinder, 5 is a clamp arm,
9 is a support member, 10 is a support frame, 10a is a long hole, 13 is a movable frame, 14a, 14b are links, and 19 is a drive cylinder.

Claims (1)

[Scope of utility model registration request] A support arm 10 having an elongated hole 10a is provided at the lower part of the back side of a pair of clamp arms 5 that can be moved in the approaching and separating directions by the clamp cylinder 4, and one end side is movably supported in the elongated hole 10a of the support arm 10. The other end side is pivotally supported by a link 14b which is pivotally connected to a movable frame 13 provided below the lower surface of each clamp arm 5 so as to be substantially parallel to the support frame 10, and an intermediate portion of the link 14b. The link 14b intersects with the link 14b in an X-shape, and one end is pivotally connected to the support frame 10, and the other end is connected to the movable frame 13.
Link 14 movably supported in long hole 13a of
A drive cylinder 19 constitutes a panda graph-shaped support member 9, and this support member 9 is horizontally suspended between a support frame 10 and an end of a link 14b supported in an elongated hole 10a of the support frame 10.
This makes the cargo handling clamp device expandable and retractable in the direction orthogonal to each clamp arm 5.