JPH0761781A - Forklift - Google Patents

Abstract

PURPOSE:To provide a forklift which can be lifted to a high position by a simple mechanism and eliminate the need of any special forklift carrying mechanism on the truck side. CONSTITUTION:Parallel links 1, 2 slidably supported through a slide member 3 are turned by a driving lever 13 to move up and down a relay support member 7 attached to on the other end sides of the links 1, 2. Struts 16 erected on the right and left holder bases 20 of holder mechanisms 19, 20 for supporting a fork 18 are inserted in the relay support member 7 to hold the struts 16 in such a manner as to freely select the upper side and the lower side, and the holder mechanisms 19, 20 are provided with a mechanism 22 for holding the fork 18 in such a manner as to be reverse in the longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forklift truck, and more particularly to a forklift truck capable of lifting and lowering the forklift truck itself by utilizing a fork lifting mechanism for cargo handling.

[0002]

2. Description of the Related Art Forklifts are often used as a main cargo handling machine, but even if they are provided at truck terminals or the like, they are not necessarily provided at the delivery destination of goods, and when there is insufficient manpower, heavy goods, etc. There was a hindrance to transportation and transportation. Therefore, it has been considered to carry a forklift by loading it on a truck, which has been partially implemented, but it requires a long and sturdy tilting table, which is difficult to use suddenly. Although it is possible to attach a large lift deck to the truck bed itself, it is not economical because it requires a considerable investment to use it for a heavy forklift. Therefore, as in the forklift disclosed in Japanese Patent Laid-Open No. 56-43197, a mast having an up-and-down mechanism of a fork is horizontally moved on a frame via a carrier, and the fork is pushed down near the center of gravity position between the front and rear wheels. Lift the wheels,
It is also considered that the forklift is carried by engaging the body of the forklift with a special forklift carrying mechanism provided on the rear part of the frame of the truck.

[0003]

However, in the one described in the above publication, a special forklift transport mechanism is required on the side of the truck that transports the forklift, and it cannot be transported by an ordinary truck, and the direction of the forklift is unchanged. In order to raise the vehicle body, it is necessary to horizontally move the mast equipped with the fork up-down mechanism on the frame via the carrier and push down the fork near the center of gravity position between the front and rear wheels. It becomes very complicated. The present invention has been devised as a problem to solve the above problems, and can lift a forklift to a high position with a simple mechanism, and does not require a special forklift transport mechanism on the truck side. The purpose is to provide.

[0004]

A forklift truck according to the present invention for achieving the above-mentioned object rotates a parallel link, one end side of which is slidably supported by a drive lever, at a side portion of a vehicle body by a drive lever. The relay support member attached to the other end of the link is moved up and down, and the support stand is inserted into the left and right holder bases of the holder mechanism for supporting the fork on the relay support member to move the support support up and down. Is selectively held, and the holder mechanism is provided with a mechanism capable of holding the fork backward and forward.

[0005]

[Operation] When transporting the forklift with the above configuration by a truck, first pull out the pin with a knob described below from the lateral hole below the pillar, rotate the drive lever counterclockwise, and connect the relay support member with a parallel link. The post is raised along the column, the hole described later is aligned with the lateral hole on the column described later, and the pin with the knob is inserted into the hole and the lateral hole. Next, the fork is removed from the holder mechanism, and is projected toward the vehicle body side of the forklift from the fork insertion hole described later. Here, when the drive lever is rotated in the clockwise direction by the drive mechanism, the parallel link tries to lower the relay support member, which pushes the fork downward through the support column and the holder mechanism. To raise the body of the forklift. Here, the transportation truck is moved backward from behind the forklift truck, its loading platform is positioned under the vehicle body of the forklift truck, and in this state, the drive lever is rotated counterclockwise so that the truck is supported by the columns, forks, etc. While the car body is descending,
The forklift is mounted on the platform. After pulling out the fork from the holder mechanism, if the drive lever is further rotated in the counterclockwise direction, the column, holder bar, holder base, etc. will rise, so if you stop at the position on the truck bed, the truck can start. Becomes

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to FIGS. 1 to 5. Reference numerals 1 and 2 are parallel links provided on the left and right sides of a vehicle body B of a forklift truck, one end of which is a bell crank-shaped slide member 3 at two ends. To the vehicle body B via a pin 5 provided with the slide member 3 at the other end.
It is slidably engaged with a slide groove 6 formed in the front-rear direction on the rear portion. Reference numeral 7 is a relay support member, which is rotatably attached to the other ends of the parallel links 1 and 2 by a pin 8 and, as shown in FIG. 3, a vertical hole 7a through which a post 16 described later is inserted.
A hole 7b is formed at a right angle to the vertical hole 7a, and a pin 9 with a knob that can be inserted / removed is inserted so that the tip of the pin 9 protrudes, and is engaged with the recess 9a inside the relay support member 7, that is, on the opposite side. A locking mechanism 12 having a mating engagement piece 10 and a spring 11 for pressing the engagement piece 10 is provided.

A drive lever 13 is rotated by a drive shaft 14 by a drive mechanism (not shown) provided in the vicinity of the vehicle body B, and the tip of the drive lever 13 is connected to the parallel link 1 via a pin 15. ing. Reference numeral 16 is a support column having upper ends near it connected by a cross bar 17, and the lower ends thereof are inserted into the vertical holes 7a of the left and right relay support members 7, and the two forks 1 are provided.
8 is connected to a holder base 20 that joins the left and right ends of a holder bar 19 to which it can be mounted. Horizontal holes 16a and 16b are formed in the vicinity of the upper end and the lower end of the column 16 in which a bush 21 through which the pin 9 with the knob is inserted is installed. Reference numeral 22 is a fork insertion hole formed in the holder base, and 23 is a tip of the fork 18 and the holder base 20.
Alternatively, the shoe is a pawl in which the height of the engaging portion 18a with the holder bar 19 is adjusted and the slip is prevented.

The forklift of the present invention having the above structure is shown in FIG.
In the state shown in FIG. 2, that is, in the state where the relay support member 7 is inserted into the lateral hole 16a of the support column 16 with the pin 9 having the knob, the forklift is operated as a normal forklift. When 13 is rotated counterclockwise in FIG. 1 about the drive shaft 14 by a drive mechanism (not shown), the relay support member 7 rises, and the support column 16, the holder base 20, and the holder bar 19 are moved.
Lift the luggage with the fork 18 via.

When the forklift is carried by a truck, first, the engaging piece 10 of the locking mechanism 12 is lifted against the spring 11 to be removed from the recess 9a, and the pin 9 with knob is pulled out from the lateral hole 16a of the column 16. The drive lever 13 is rotated in the counterclockwise direction to raise the relay support member 7 along the column 16 by parallel links 1 and 2, and the hole 7b is aligned with the lateral hole 16b of the column 16. Where the hole 7b
Also, the pin 9 with knob is inserted into the lateral hole 16b, and the engaging piece 10 of the locking mechanism 12 is pushed into the recess 9a at the tip end with the spring 11 to fix the pin 9 with knob. (Fig. 2) Next,
The fork 18 is removed from the holder bar 19, and the tip of the fork 18 is projected from the fork insertion hole 22 to the vehicle body B side of the forklift as shown in FIG.
Insert up to a. Then, the pawl shoe 23 is put on the tip of the forklift 18.

When the drive lever 13 is rotated clockwise about the drive shaft 14 in FIG. 1 by a drive mechanism (not shown), the parallel links 1 and 2 move from the state shown in FIG. 2 to the relay support member 7. The fork 18 is pushed downward through the support column 16, the holder base 20 and the holder bar 19, so that the reaction force of the fork lifts the vehicle body B of the forklift truck as shown in FIG.
Here, the truck T for transportation is retracted from behind the forklift, and the loading platform N is positioned below the vehicle body B of the forklift. In this state, if the drive lever 13 is rotated counterclockwise about the drive shaft 14 by the drive mechanism, the vehicle body B is lowered while being supported by the support columns 16, the forks 18, etc., and the forklift is above the loading platform N. To be installed on. After removing the pawl shoe 23 and pulling out the fork 18 from the fork insertion hole 22, the drive lever 13
When the drive mechanism is further rotated counterclockwise about the drive shaft 14, the support 16, the holder bar 19, the holder base 20 and the like are lifted. Therefore, if they are stopped at a position on the cargo carrier N of the truck T, The truck T can start with the door closed. In addition, when the forklift is to be unloaded from the bed N of the truck T, the operation may be performed in the reverse order.

In the example shown in FIG. 5, the track T in the state of FIG.
The forklift mounted on the cargo bed N of the fork can move on the fork. The fork 18 'has the rack 1 on the side that is always the lower surface (the upper surface side in FIG. 5).
8'a is formed and the holder base 20 is
In this, a roller 24 that supports and rolls the fork 18 ′ and a gear 25 that meshes with the rack 18 ′ a of the fork 18 ′ from the upper surface are installed, and the gear 25 of the hydraulic motor 26 provided on the holder base 20. It is engaged with the drive pinion 27. The pawl shoe 23 is attached to the holder bar 19
If the height of the engaging portion 18'a is adjusted to be larger than the height of the holder base 20, the forklift itself is driven by driving the hydraulic motor 26 on the bed N of the truck T. Can be moved on the fork 18 ', and the position on the loading platform N can be easily adjusted.

[0012]

According to the forklift of the present invention, a parallel link, one end of which is slidably supported by a slide member on a side portion of a vehicle body, is rotated by a drive lever and attached to the other end of the link. The support member is configured to move up and down, and the support mechanism is configured to be vertically movable by inserting a support stand upright on the left and right holder bases of a holder mechanism supporting the fork into the relay support member. It is characterized by a mechanism that can hold the fork backwards and forwards, so the forklift itself can be raised to a high position simply by replacing the fork, and a special forklift transport mechanism is required on the truck side. Not only does it provide a forklift, but also when parking a forklift, one can be parked underneath and the other can be parked directly underneath. Since, there is also an effect that can save a parking space.

[Brief description of drawings]

FIG. 1 is a perspective view of a forklift of the present invention, showing a normal operation

FIG. 2 is a partial perspective view showing a state in which the forklift of the present invention has been prepared for raising itself.

FIG. 3 is a vertical sectional view taken along the line AA of FIG.

FIG. 4 is a front view showing a procedure for mounting the forklift of the present invention on a truck.

FIG. 5 is a partial perspective view showing another embodiment of the forklift of the present invention 1, 2 parallel links 3 slide members 4, 5, 8, 15 pins 6 slide grooves 7 relay support members 7a vertical holes 7b holes 9 pin with knobs 10 Engaging piece 11 Spring 12 Locking mechanism 13 Drive lever 14 Drive shaft 12 Holding tool 13 Recess 14 U-shaped block 16 Struts 16a, 16b Horizontal hole 17 Crossbar 18, 18 'Fork 19 Holder bar 20 Holder base 21 Bush 22 Fork insertion hole 23 Shoe for pawl 24 Roller 25 Gear 26 Hydraulic motor 27 Drive pinion B Forklift body.

Claims (1)

[Claims] 1. A parallel link having one end slidably supported by a side portion of a vehicle body via a slide member is rotated by a drive lever to vertically move a relay support member attached to the other end of the link. In addition to supporting the fork, the pillars that stand upright on the left and right holder bases of the holder mechanism that supports the fork are inserted through the relay support member to hold the pillars up and down freely, and to reverse the fork to the holder mechanism. A forklift characterized by having a mechanism capable of holding the forklift.