JPH072396U - Forklift pusher device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a pusher device that can reliably stop a pallet on the fork side when pushing out a load on the pallet and that does not reduce the loading efficiency of the pallet. A pusher device for a forklift, which includes a face plate 7 that can move back and forth to push forward a load on a pallet supported by a fork 4,
The left and right forks 4 are configured to be movable in the contact and separation directions by a shift cylinder 16. The fork 4 is provided with an outwardly extending hooking portion 15 for hooking the front end edge of the pallet, and the pallet is stopped by the hooking portion 15 when the face plate 7 pushes the pallet.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pusher device for a forklift, and more particularly to a pusher device effective for collecting pallets.

[0002]

[Prior art]

 In a conventional general pusher device for a forklift, it is usual to push the cargo on the fork together with the pallet forward and load it on the bed of the truck or the like. Therefore, in order to collect expensive pallets, only the parcels will be loaded or returned from the shipping destination. However, such a pallet recovery method has a problem in that the cost for recovery is high.

In view of such a situation, there has been proposed a pusher device capable of pushing out only the load while leaving the pallet on the fork. As such a pallet recovery type pusher device, for example, Japanese Utility Model Laid-Open No. 51-149572 can be cited. In short, the pusher device described in the above-mentioned publication is, when the load on the pallet is pushed forward by the face plate, from the upper side of the rear center of the pallet loading surface by the pressing arm vertically moved by the cylinder. I tried to hold it down.

[0004]

[Problems to be solved by the device]

 However, in the pusher device of the pressing method using the pressing arm described in the above publication, when loading luggage on the pallet, it is necessary to secure a space for holding by the pressing arm in advance and load the luggage, which is bothersome. There is a problem that the loading efficiency of pallets decreases. In addition, the pusher device of the pressing method using the arm prevents the pallet from swinging forward and backward and left and right because the pressing arm presses the center of the rear side of the pallet loading surface. Difficult to do. In other words, when pushing a relatively slippery baggage such as a bag of grains forward, the pallet may move forward with the baggage or sway sideways. There is also a problem in that the pallet is certainly stopped.

In view of the above problems, the present invention provides a pusher device that can reliably stop the pallet on the fork side when pushing the load on the pallet and that does not reduce the loading efficiency of the pallet. This is the technical problem to be solved.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention is configured as follows. That is, in a pusher device for a forklift equipped with a face plate that can move back and forth to push forward the load on a pallet supported by a fork, the left and right forks can move in the contact and separation directions by a shift cylinder. In addition, it is characterized in that the left and right fork tips are formed with outwardly extending hooking portions.

[0007]

[Action]

 In the pusher device according to the present invention configured as described above, when pushing the load on the pallet supported by the fork by the face plate, the left and right forks are moved in the separating direction by the shift cylinder, and the side surface of the fork is moved. Abut or approach the side end surface of the fork insertion port of the pallet. If the load is pushed forward by the face plate in this state, the front edge of the pallet is hooked on the hooking portion of the fork, and the forward movement of the pallet is stopped. Therefore, only the load is pushed forward from above the pallet and the pallet remains on the fork.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. The perspective view of FIG. 1 and the side view of FIG. 2 show the entire pusher device of the forklift according to the present embodiment. Further, FIG. 3 shows a fork shift mode, and FIG. 4 shows a fork pallet stop mode. Are shown respectively. As shown in FIG. 1 and FIG. 2, a pair of left and right forks 4 is attached via a hook 5 to a pair of upper and lower finger bars 3 fixed to a lift bracket 2 that can be raised and lowered along a mast 1 of a forklift. It is mounted so that it can move in any direction.

Further, columnar holders 6 with grooves are vertically fixed to the front left and right ends of the finger bar 3, and the holder 6 has a lattice shape for pushing the load on the forks 4 forward. The face plate 7 is attached via a pair of left and right pantographs 8 and is moved back and forth by the expansion and contraction operation of the pair of left and right pusher cylinders 9.

The end of the pantograph 8 on the holder side of the link is attached so that its upper end can be moved up and down via a roller 11 rolling in the holder 6, and its lower end can be attached to the holder 6 by a pin 10. It is rotatably attached. Further, the end portion of the link on the face plate side is provided with a roller 14 which rolls in a grooved columnar rail member 12 whose upper end side is vertically fixed to left and right end portions on the back side of the face plate 7. It is mounted so that it can move up and down, and the lower end portion is rotatably mounted on the rail member 12 by a pin 13.

In the pusher device as described above, however, as shown in FIGS. 1 and 4, the front end portions of the left and right forks 4 have an outwardly projecting hooking shape that can be hooked on the front edge of the pallet P. A stop 15 is provided. A shift cylinder 16 for horizontally moving the forks 4 on the left and right sides is horizontally arranged between the upper and lower finger bars 3. As shown in FIG. 3, the shift cylinder 16 is a double piston type cylinder, the main body side of which is fixed to the finger bar 3 via a bracket 17, and the ends of both rods are attached to the rear surface of the left and right forks 4 by a bracket. It is fixed through 18.

The shift cylinder 16 is connected to a hydraulic unit 20 via an oil control valve 19 so that it can be operated in the driver's seat. Further, a stopper rod 21 for setting the minimum gap of the fork 4 is interposed between both pistons.

The pusher device of this embodiment is configured as described above, and therefore, the unloading work for picking up the load W on the pallet P by the forks 4 is as shown by the solid line in FIG. The hydraulic oil is supplied to the left and right oil chambers of the shift cylinder 16, and the shift cylinder 16 is contracted to narrow the gap between the left and right forks 4. That is, when inserting the fork 4 into the fork insertion port P1 of the pallet P, the fork interval is adjusted so that the hooking portion 15 at the tip of the fork does not contact the rear edge of the pallet P.

Immediately after inserting the fork 4, or when transporting the load to load and unload the load W on the pallet P from the truck bed or the like, hydraulic oil is supplied to the oil chamber in the center of the shift cylinder 16. When the shift cylinder 16 is extended, the left and right forks 4 are moved in the separating direction as shown by the phantom line in FIG. 3, and the side surfaces thereof come into contact with or approach the side end surface of the fork insertion port P1 of the pallet P. .

As a result, the hooking portion 15 of the fork 4 faces the front end edge of the pallet P. In this state, the pusher cylinder 9 is extended and the face plate 7 is moved through the pantograph 8. When the luggage W is pushed forward by advancing it, as shown in FIG. 4, the hooking portions 15 of the forks 4 hook on the left and right front end edges of the pallet P to prevent the movement thereof. Therefore, the pallet P remains on the fork 4 side, and only the cargo W is loaded on the truck bed or the like.

In this case, since the left and right ends of the pallet P are restrained, unnecessary movement such as lateral shake is suppressed, and the pallet P is held in a stable posture. This is effective in preventing the occurrence of cargo collapse. After recovering the pallet P in this manner, the left and right forks 4 can be moved toward each other in the approaching direction to remove the hooking portion 15 from the front end edge of the pallet P, and the fork 4 can be removed from the pallet P as described above. .

In the pusher device of the present embodiment, since the hooking portion 15 formed at the tip of the fork 4 is formed in an outwardly protruding shape, the pusher device is moved in the direction in which the fork space is widened and the pallet P is moved. In order to lock the pallet P, the left and right stability of the pallet P is lower than that in the case where the pallet P is bulged and moved in the direction of narrowing the fork intervals to hang it on the pallet P. There is an advantage of not doing it.

[0018]

[Effect of device]

 As described in detail above, according to the present invention, the pallet can be collected by engaging the hooking portion at the tip of the fork with the front edge of the pallet when pushing the load by the pusher device. It is possible to use the entire upper surface of the as a luggage loading surface. This is different from the conventional method in which a space for holding the pressing arm was required to be secured on a part of the pallet mounting surface when loading luggage on the pallet. The annoyance is eliminated and the loading efficiency can be improved.

Further, according to the present invention, since the hooking portion of the fork is hooked on the left and right front end edges of the pallet to stop the pallet, the pallet is stable without causing unnecessary movement such as lateral shake. It can be left on the fork side in this state.

[Brief description of drawings]

FIG. 1 is a perspective view showing a pusher device of a forklift according to an embodiment of the present invention.

FIG. 2 is a side view showing the pusher device of the same.

FIG. 3 is an explanatory diagram showing a shift mode of a fork.

FIG. 4 is an explanatory diagram showing a restraint mode of a pallet.

[Explanation of symbols]

 4 ... Fork 6 ... Holder 7 ... Face plate 15 ... Hooking portion 16 ... Shift cylinder

Claims (1)

[Scope of utility model registration request] 1. A pusher device for a forklift including a face plate capable of moving back and forth for pushing forward a load on a pallet supported by a fork, wherein the left and right forks move in a contacting and separating direction with each other by a shift cylinder. A pusher device for a forklift, which is capable of being formed, and has outwardly extending hooking portions formed at the tips of the left and right forks.