JPS63189396A - Fork device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fork device, and more particularly, to a fork device suitable for use in valet, container cargo handling, and the like.

[Prior art]

-C Forklift vehicles are sometimes used to handle cargo such as pallets and containers, but in this case, the fork device is used by moving an integrated claw body back and forth and up and down. However, since this fork device has an integrated or fixed pawl body that extends in the horizontal direction,
Not only does this require a space for cargo handling, but the claws get in the way of the movement of the fork device, resulting in a reduction in cargo handling efficiency.

[Purpose of the invention]

The present invention has been made to solve the above-mentioned problems, and its purpose is to compactly store the pawls of the fork device, thereby reducing the cargo handling space.
Moreover, it is possible to easily transport the same.

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention includes a guide having a direction changing part at the lower end extending in the vertical direction,
A movable member that moves along the guide is provided, and the base of the claw body is connected to the movable member with a pin. It is an object of the present invention to provide a fork device configured to

That is, in the present invention, the claw body is composed of a large number of plate-shaped or rod-shaped claw units, and these claw units have a trapezoidal shape when viewed from the side. are placed in contact with each other, and the upper side of the claw unit, that is, the surface on which the load is applied, is connected by a hinge.

The claw body, which is constructed by connecting a large number of claw units with a hinge, can be bent in one direction and can be housed in the guide. However, when the claw main body is unfolded in a straight line, it is in a rigid state in which it cannot be bent in the opposite direction to the bending direction.

Specifically, the movement of the claw body appears to be similar to that of a shark or shrimp.

The claw units have a trapezoidal shape when viewed from the side, and their slanted surfaces come into contact with each other to create a pressed state, and the load is borne by the force acting on these slanted surfaces and the force acting on the hinge connecting the claw units. .

The distance between the inclined surface of the claw unit and the pin that constitutes the hinge bears the moment that occurs with the load, and if this distance is short, sufficient reaction force will not be generated. When designing, it is necessary to determine the distance by considering the load to be borne.

〔Example〕

An embodiment of a fork device according to the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 is a side view of a forklift vehicle equipped with a fork device according to the present invention.

A support body 2 is fixed to the front part of the forklift vehicle 1, and a fork device 3 is supported on this support body 2. The fork device 3 is composed of a guide 4 and a pawl body 5 that can be bent in one direction.

As shown in FIGS. 2 and 3, the guide 4 includes a guide frame 8 having a direction changing portion 6 and an open lower portion at the lower end, and a screw jack 9 disposed inside the guide frame 8.
It is composed of. A traveling nut 10 as a moving member is screwed onto this screw jack 9, and the traveling nut 10 is configured to be moved in the vertical direction by rotating the screw jack 9 by a drive device (not shown). has been done.

The base of the claw body 5 is attached to the traveling nut 9 by a pin 11. Particularly, as shown in FIG. 4, the claw body 3 has an inclination angle θ opposite to that of the first claw unit body I2, which is a trapezoidal prismatic body having an inclination angle θ from the top to the bottom in a side cross section. A large number of second claw unit bodies 13 having a similar shape having 13' are arranged so that their sides are in contact with each other, and a pin 15 is inserted into a hole in a bracket 14 provided on the upper part of the second claw unit bodies 13. constitutes a hinge. 16 is a support plate provided on the upper surface of each claw unit 12, 13 to prevent the cargo from coming into direct contact with the bracket 14 and pin 15 during cargo handling.

Reference numeral 17 in FIG. 3 is a support stand attached to the lower end side of the guide frame 8, and this support stand 17 is attached to the lock pin 1.
A hydraulic piston 19 is attached to actuate the 8.

In the fork device having the above configuration, the guide frame 8
To explain the case of inserting the claw main body 5 housed inside the cargo W into the lower part of the cargo W, when the screw jack 9 shown in FIG. 2 is rotated by a drive device (not shown) and the traveling nut 10 is moved downward, this traveling The claw body 5 connected to the lower part 10a of the nut 10 is also sent downward. At this time, the tip of the tip 12-1 of the claw unit provided at the lower end of the claw body 5 is first rotated about the pin 15-1 by the direction changing section 6.

That is, it is guided to the open lower part and protrudes in the horizontal direction.

A large number of pawl unit bodies 12, 13 are then sent out one after another from the intermediate lower part to complete the pawl main body 5. Thereafter, the hydraulic piston 19 shown in FIG. 3 is driven to fit the lock pin 18 into the fitting part 17 provided on the claw unit 12-n at the base.

Then, by moving the guide frame 8 upward by a device not shown, the cargo W can be supported by the claw body 3 and lifted and moved.

Of course, if the claw body 3 is to be stored in the guide frame 8 after cargo handling is completed, the above operation may be performed in reverse.

The weight of the cargo W is determined by the double-sided slopes Fa and F of the claw unit 12.13.
This will act on part b and pin P (15), but if the distance between double-ended slopes Fa and Fb and pin P is short, excessive shear stress will be generated on pin P. Become. Therefore, in order to avoid this, it is preferable to determine the dimensions of the bracket 14 so as to provide a sufficient distance.

〔Effect of the invention〕

- As is clear from the above description, according to the fork device according to the present invention, the claw body 3, which is configured such that the claw unit bodies 12 and 13 are connected by the pin 15 and can be bent into a shrimp shape, can be bent in the vertical direction. can be stored along a guide frame 8 that extends to. Therefore, forklift truck 1
Because the claw body 5 is not always in a protruding state,
Cargo handling space can be minimized.

Further, the forklift vehicle 1 equipped with the fork device 3 can be easily moved, and there are effects such as being able to improve cargo handling efficiency.

[Brief explanation of the drawing]

The figures show one embodiment of a fork device according to the present invention, in which Fig. 1 is a schematic side view of a forklift vehicle, and Fig. 2 is a schematic side view of a forklift vehicle.
3 is a partially enlarged side view of the fork device, FIG. 3 is a plan view of the front part of the forklift vehicle of FIG. 1, and FIG. 4 is a perspective view of the claw unit. DESCRIPTION OF SYMBOLS 1... Forklift vehicle, 2... Support body, 4 Guide, 5... Claw body, 6... Direction change part, 7... Opening, 8... Guide frame, 9... Screw Jyatsuki, 10... Traveling Nando, 11... Pin,
12.13...Claw unit, 14...Bracket, 1
5... Pin, 16... Support plate, 17... Support stand,
18...Lock pin, 19...Hydraulic piston, 20
···Fitting portion.

Claims (1)

[Claims] A guide having a direction changing part at the lower end extends in the vertical direction, a moving member that moves along the guide is provided, and the base of the claw body is connected to the moving member with a pin. A fork device characterized in that the constituent members are configured such that their side surfaces touch each other and are connected at their upper portions by a pin.