JPH0672000B2 - Forklift type cargo handling device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a forklift type cargo handling device.

(Prior Art) A cargo handling device such as a forklift truck has a pair of left and right masts provided with an elevating frame, and a pair of left and right forks is provided on the elevating frame, and the forks are inserted below a transported object such as a container or a pallet. So that they can carry out loading work.

(Problems to be Solved by the Invention) In a conventional cargo handling device of this type, since a fork is simply inserted below the object to be conveyed, lifted, and then moved and conveyed, a plurality of conveyed objects are conveyed. If you stack items, you can carry them all at once. For example, when loading multiple packages such as containers randomly placed on the ground on the bed of a carrier, you can load them one by one. I had to go in a complicated way. Therefore, there is a drawback that the work at the time of loading is very complicated and the work efficiency is remarkably reduced.

In view of such conventional problems, the present invention stacks a plurality of objects to be transported sequentially lifted by a fork along a mast,
After that, the object is to enable loading of the plurality of objects to be transported onto a transport vehicle or the like.

(Means for Solving the Problems) As a means for achieving the above, the present invention provides a pair of left and right masts 5.
The lifting frame 8 is provided in the
In a forklift-type cargo handling apparatus provided with 10, a pair of support arms 21 arranged to face each other is provided in the upper and lower middle portions of each mast 5, and the carried object 11 lifted by the forks 10 is engaged with each of the support arms 21. A locking tool 22 is provided between the locking position A for stopping and the removal position B for separating from the transported object 11, and a stopper 31 for holding the locking tool 22 at the locking position A. And a stopper 32 for holding the detached position B.

(Operation) When the transported object 11 is sequentially lifted by the fork 10, the upper transported object 11 is pushed up by the lower transported object 11, and the support arm 21
The locking tool (22) locks the lowest transported object (11). Therefore,
A plurality of objects to be transported 11 can be stacked on the support arm 21.

When loading this object to be transported 11 onto a transport vehicle 37, etc.
If 22 is held at the detaching position B, it can be loaded in the stacked state.

(Example) Hereinafter, the Example of this invention is described based on drawing. First
5 to 5 exemplify a hand-operated cargo handling device.

In FIG. 1 to FIG. 3, reference numeral 1 denotes a traveling frame, which is formed in a U-shape in plan view with the front portion side opened, and a battery mounting table 2 is integrally provided at the rear portion of the traveling frame 1. A pair of left and right wheels 3 are provided on the front portion, and caster wheels 4 are provided on the left and right center portions of the battery mounting table 2, respectively. Reference numeral 5 denotes a pair of left and right masts made of a channel material, which are erected on both sides of a rear portion of the traveling frame 1. The pair of left and right masts 5 are connected by a connecting member 6 at their upper ends. Reference numeral 7 denotes a handle for pushing by hand, which is formed in a U-shape, and the left and right ends of the handle 7 are fixed to the upper and lower substantially central portions of the pair of left and right masts 5, respectively. Reference numeral 8 denotes an elevating frame arranged between the pair of left and right masts 5, which has a pair of upper and lower guide wheels 9 at both left and right ends.
It is installed so that it can be moved up and down along A pair of left and right forks 10 are provided on both sides of the lower end of the elevating frame 8 so as to project forward.
Is installed. Each fork 10 is composed of an angle member having an L-shaped cross section, and the front end side thereof is curved outward so that it can be easily inserted into a lower side of a container 11 for transporting an object to be transported, such as vegetables. Has been done. Reference numeral 12 is an elevating drive device for elevating the elevating frame 8 along the mast 5, and a pulley 13 provided at the center of the upper part of the elevating frame 8 and a V-shaped winding around the pulley 13 and one end of which is connected. Bracket for material 6 14
The rope 15 such as a wire rope or a chain connected to the rope 15 and the bracket 17 of the connecting member 6 so that the other end of the rope 15 can be wound up.
It comprises a take-up pulley 18 pivotally attached to the motor, and a forward / reverse rotation motor 19 for driving the pulley 18 in the take-up and pay-out directions. In addition,
The motor 19 uses the battery 20 on the battery mounting table 2 as a power source. Further, the motor 19 may have an electromagnetic brake. Reference numeral 21 denotes a pair of left and right support arms arranged to face each other, and fixed to each mast 5 so as to project forward at a position slightly deviated from the upper and lower central portions thereof. Locking members 22 are attached to the respective parts. That is, as shown in FIG. 4, each of the support arms 21 is formed at its front end with a bent portion 23 that bends outward in a U-shape, and a pair of brackets 24 are provided on both front and rear sides of the bent portion 23. It is fixed so as to project outward. Then, the locking tool 22 is arranged between the pair of brackets 24,
And the pivot in the front-rear direction inserted between the pair of brackets 24
The locking tool 22 is rotatably supported by 25 via a boss 50. The locking tool 22 has a width slightly smaller than that of the handbag 26 of the container 11, and has a locking portion 28 for locking the handholding portion 27 from below with the inner end inserted into the handholding opening 26 and an outer end. The engaging portion 29 is formed in an L shape, and the inclined guide portion 30 is formed below the locking portion 28. The locking tool 22 has a locking portion 28 protruding inward in a substantially horizontal direction to lock the container 11 and a locking position A.
It can freely move back and forth around the pivot 24 with respect to a disengagement position B in which the engaging part 29 engages with a stopper 31 on the outer surface of the bent part 23 from the outside and holds it. Further, at the disengaged position B, the engaging portion 29 is engaged with and held by the stopper 32 from below. As shown in FIG. 5, the stopper 32 is supported by a tubular body 33 fixed to the bracket 24 so as to be able to move back and forth, and is biased in a protruding direction by a spring 34. The lever 32 on the handle 7 side is connected via a wire or the like. The engaging part 29 can be engaged and disengaged by a hand operation. In addition, stopper
Although 32 may be a simple round bar pin, it is formed in a tapered shape as shown in FIG.

When the container 11 randomly placed on the ground is loaded by the hand-operated cargo handling apparatus having the above-described configuration, the following operation is performed. That is, with the elevating frame 8 and the forks 10 lowered to the lowest position, they are positioned in front of the container 11 as shown in FIG.
Insert 10 into the bottom of container 11 and go. Then, as shown by the phantom line in FIG. 1, when the fork 10 sufficiently enters the lower side of the container 11, the motor 19 is rotated in the normal direction, and the pulley 18 is used to pull the rope 15.
As it is wound up, the elevating frame 8 rises along the mast 5, and the fork 10 lifts the container 11. At this time,
If the container 11 is the first container, the engaging member 22 is held at the engaging position A by engaging the engaging portion 29 with the stopper 31, so that the engaging member 22 is rotatable upward. Then, when the container 11 rises, the upper end thereof comes into contact with the guide portion 30 to rotate the locking tool 22 around the pivot 24 in the arrow D direction. And
When the handbag 27 of the container 11 passes through the locking tool 22, the locking tool 22 returns to the locking position A by its own weight. Therefore, when the motor 19 is rotated in the reverse direction and the elevating frame 8 and the fork 10 are lowered, The tip of the locking tool 22 is engaged in the handbag 26 of the container 11, and the engaging portion 29 locks the handbag 27 from below. Therefore, the container 11 moves away from the fork 10 and the support arm 21
It is also immovable in the front-rear direction because it is locked by the locking tool 22 on the top and the locking tool 22 is engaged with the handle 26.

Next, when the second container 11 is similarly lifted by the fork 10, the lower end protrusion 36 of the upper container 11 is fitted into the upper end opening 35 of the lower container 11, and then the lower container 11 picks up upper container 11. Therefore, the locking tool 22 rotates around the pivot 24 and is disengaged from the upper container 11. Then, when the handbag 27 of the lower container 11 passes above the locking tool 22, the locking tool 22 returns to the locking position A. Next, when the fork 10 is lowered thereafter, the locking tool 22 engages with the handbag 27 of the lower container 11 and locks the lower container 11. Then, in the same way, sequentially
When the forks 11 are lifted up, the containers 11 can be stacked on the support arm 21 with the locking tool 22 while being stacked.

When the required number of containers 11 have been stacked, they are moved to the side of the carrier 37. With the fork 10 slightly elevated above the platform 38, the front side of the traveling frame 1 is placed below the platform 38. Insert it. Then, each container on the fork 10
Since 11 is located on the loading platform 38, after holding the locking tool 22 at the disengagement position B with the stopper 32, the fork 10 is lowered to transfer the container 11 onto the loading platform 38. When each container 11 is lifted by the fork 10, the locking tool 12 is at the position of the imaginary line E in FIG. 4, so if the stopper 32 is tapered,
By projecting the stopper 32 by the hand operation of the lever, the stopper 32 can be rotated from the virtual line E to the detached position B. Then, when the container 11 is placed on the loading platform 38, the fork 10 may be pulled out from the lower side of the container 11 by moving backward, so that a plurality of stacked containers 11 can be simultaneously loaded as they are. Therefore, for every 111 containers 37
It is possible to load efficiently without having to go back and forth between and.

6 and 7 show a self-propelled case provided with a crawler traveling device 39. The crawler traveling device 39 is provided on both left and right sides of the traveling frame 1, and is formed by winding a crawler 43 made of rubber or the like over the front and rear idle wheels 40, 41 and the rear drive wheel 42. Each drive wheel 42 is driven by a PTO shaft 45 of an engine 44 via a speed reducer 46 and the like. The engine 44 and the speed reducer 46 are mounted on the mast 5, and the engine 44 has a generator for the motor 19.

If the crawler traveling device 39 is provided in this way, it is convenient for work on rough terrain, and is most suitable for work in open-field vegetable houses.

The lifting drive device 12 may use a hydraulic cylinder, or may be a manual type in which the winding drum or the lifting screw shaft is operated by a handle. Further, the locking tool 22 may be linear and can be moved in and out.

(Effects of the Invention) According to the present invention, a pair of support arms 21 arranged to face each other is provided in the upper and lower middle portions of each mast 5, and each support arm
21, a locking position A for locking the transported object 11 lifted by the fork 10 and a disengagement position B for disengaging it from the transported object 11.
A locking member 22 is provided between the locking position and the locking position so that the locking member 22 can be moved back and forth.
Since the stopper 32 for holding the object to be held is provided, by sequentially lifting the object to be transferred 11 by the fork 10, a plurality of objects to be transferred 11 can be stacked on the support arm 21, and The objects to be transported 11 can be loaded in a stacked state. Therefore, it is possible to easily and efficiently carry out the work of loading the transported objects 11 randomly placed on the ground.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, in which FIG. 1 is a side view of the whole, FIG. 2 is a front view thereof, FIG. 3 is a sectional plan view thereof, and FIG. FIG. 5 is a sectional view of a stopper portion. FIG. 6 is a side view showing another embodiment of the present invention, and FIG. 7 is a partial front view of the same. 1 ... running frame, 5 ... mast, 8 ... elevating frame, 10 ... fork, 11 ... container (transported object), 12 ... driving device, 19 ... motor, 21 ... supporting arm, 22 ...... Locking device,
31,32 ... Stopper, A ... Locking position, B ... Releasing position.

Claims (1)

[Claims] 1. A forklift-type cargo handling apparatus comprising a pair of left and right masts (5) provided with a lifting frame (8), and a pair of left and right forks (10) provided on the lifting frame (8). A pair of support arms (21) arranged to face each other is provided in the middle of the upper and lower portions, and a locking position (at which each of the support arms (21) locks the transported object (11) lifted by the fork (10) ( A locking tool (22) is provided so as to be able to move back and forth between (A) and a disengagement position (B) for disengagement from the transported object (11), and the locking tool (22) is placed at the locking position (A). A forklift-type cargo handling device comprising a stopper (31) for holding and a stopper (32) for holding at a detached position (B).