JPS602160Y2 - Push-pull device operation confirmation device - Google Patents

Description

[Detailed description of the invention] In recent years, sheet pallets, which are thin and lightweight, have become popular due to their advantages such as ease of cargo handling, saving in storage space height, and economical efficiency.

In order to handle these sheet pallets, a push-pull device that is attached to the front of a forklift has been developed.

FIG. 1 is an example of a fork wrist equipped with a conventional push-pull device.

In FIG. 1, a is a fork wrist, b is a mast, and c is a push-pull device. This push-pull device C is composed of a face plate d1 frame e1 link f1 platen g, etc.

A sheet pallet holding device is provided at the bottom of the face plate d, and a sheet pallet holding device i is provided at the bottom of the frame e.

Further, in the figure, j is a sheet pallet, and h is a cargo.

Now, in the device with the structure shown above, the sheet pallet j
In order to transfer the sheet pallet onto the platen g, the rear end (bent portion) of the sheet pallet j is firmly grasped with a pinching device and the face plate d is moved backward.

Furthermore, when transferring the cargo k transferred onto the platen g to a truck, warehouse, etc., there are two types of work.

First, if you want to push out only one of the sheet pallets, j, on the platen g, press the rear end of the sheet pallet j against the platen g using the holding device i, and pinch it, and then open the pallet pinching device. This is done by advancing the face plate d.

Next, when another sheet pallet j is to be pushed out together with the cargo, this is done by closing the holding device i, opening the pinching device slightly, and moving the face plate d forward.

In this way, when working with push-pull device C,
The pinching device and the holding device i are opened and closed, but in the device shown in FIG. 1, when the link f is retracted, it is blocked by the mast b1 frame e and cannot be seen sufficiently.

Therefore, since the opening/closing status of the device cannot be visually confirmed, the driver has no choice but to remember the previous operation and estimate the current status, which may lead to inappropriate operation during push-pull work. .

This draft was proposed in order to solve the above-mentioned conventional drawbacks, and by providing a display device in a push-pull device that allows you to easily check the open/closed state of the pinching device and presser device when the link is contracted, It is an object of the present invention to provide an operation confirmation device for a push-pull device that can improve work efficiency without causing inappropriate operations.

The embodiment of this draft will be explained below with reference to the drawings. In Figures 2 to 10, 1 is a push-pull device, 2 is a face plate, 3 is a frame, 4 is a link, and 5 is attached to the lower part of the face plate 2. The sheet pallet holding device 6 is a sheet pallet holding device attached to the lower part of the frame 3, and these are almost the same as those shown in FIG. 1 above.

7 and 8 are display devices attached to appropriate positions on the face plate 2 and frame 3, respectively; 9 is a platen; 10 is a sheet pallet; and 11 is luggage.

As shown in detail in FIG. 3, the sheet pallet clamping device 5 includes a hydraulic cylinder 12, an arm 13, a shaft 14,
It is composed of a gripper jaw 15, a butt 16, etc., and the arm 13 and the gripper jaw 15 are fixedly attached to the shaft 14 and rotate together with the shaft 14 by the operation of the hydraulic cylinder 12.

Further, a pad 16 is attached below the bracket 17 attached to the lower part of the face plate 2, and the pad 16 is attached to the seat pallet 10 in conjunction with the gripper 15.
It is designed so that it can be pinched.

Next, the sheet pallet holding device 6 will be explained in detail. The device 6 is composed of a hydraulic cylinder 18, an arm 19, 20, a shaft 21, a holding plate arm 22, etc.
．． 20 is fixedly attached to a shaft 21 rotatably provided at the lower part of the frame 3, and rotates together with the shaft 21 by the operation of a hydraulic cylinder 18, and a presser plate arm 22 connected to the arm 20 is opened and closed.

In addition, in the sheet pallet clamping device 5, the metal fitting 12a connecting the hydraulic cylinder 12 and the arm 13 includes:
A connecting tool 23 is attached, and the lower end of a rod 24 is connected to the connecting tool 23 via a ball joint (not shown).

Furthermore, the display device 7 is provided above the sheet pallet clamping device 5, and the display device 7 has a display plate 27 rotatably attached to the bracket 25 via a shaft 26 as shown in FIGS. 4 and 5. It is composed of

The display plate 27 is rotatably connected to the upper end of the rod 24 via a ball joint.

In addition, the plate 25a of the bracket 25 extends upward, and when the display plate 27 is rotated counterclockwise (the position indicated by the two-dot chain line in Fig. 5), from the driver's seat it is in the shadow of the plate 25a and the display plate 27 is no longer visible.

Next, in the sheet pallet holding device 6, the shaft 21
As shown in FIG. 6, an arm 28 is fixedly attached to the arm 2B so as to rotate together with the arm 2B, and the lower end of a rod 29 is rotatably connected to the arm 2B via a ball joint.

Further, above the sheet pallet holding device 6, the display device 8 is provided, and the display device 8 is shown in FIGS.
As shown in the figure, a display plate 32 is rotatably attached to a bracket 30 via a shaft 31.

The display plate 32 is rotatably connected to the upper end of the rod 29 via a ball joint.

Further, when the display board 32 is rotated counterclockwise in the state shown by the two-dot chain line in FIG. 8, it is hidden within the bracket 30 and cannot be seen from the driver's seat.

Next, the effect will be explained.

First, to explain the display device 7, the hydraulic cylinder 12
When the gripper 15 is shortened, the gripper 15 rotates counterclockwise and opens to the position shown by the two-dot chain line in FIG.

By shortening this hydraulic cylinder 12, the rod 2
4 is pushed upward, the display plate 27 rotates counterclockwise and is at the position indicated by the two-dot chain line in FIG.
It is hidden behind the window and cannot be seen from the driver's seat.

Next, when the hydraulic cylinder 12 is extended, the gripper 1
5 rotates clockwise until it comes to the position shown by the solid line in FIG. 3 and closes.

When the hydraulic cylinder 12 extends in this way, the rod 24
is pulled downward, so the display board 27 rotates clockwise and comes to the position shown by the solid line in FIG. 5, emerging from the plate 25a and visible from the driver's seat.

Next, the display device 8 will be explained.

First, when the hydraulic cylinder 18 is shortened, the arm 19.20
rotates counterclockwise, and the presser plate arm 22 rotates clockwise, so that the arm 22 opens to the position shown by the two-dot chain line in FIG.

By shortening the hydraulic cylinder 18 in this way, the arm 28 rotates counterclockwise and pushes the rod 29 upward, so the display plate 32 rotates clockwise and is moved to the position shown by the two-dot chain line in FIG. It is hidden inside the bracket 30 and cannot be seen from the driver's seat.

Next, when the hydraulic cylinder 18 is extended, the arm 19.20
is rotated clockwise, and the presser plate arm 22 is rotated counterclockwise and closed to the position shown by the solid line in FIG.

Due to the extension of the hydraulic cylinder 18, the arm 28 rotates clockwise and the rod 29 is pulled downward, so the display plate 32 rotates counterclockwise and reaches the position shown by the solid line in FIG. , visible from the driver's seat.

In addition to the above embodiment structure, the rod 24 may be connected to the pinching device 5 side as shown in FIG. 6.

Similarly, in order to connect the rod 29 to the presser device 6 side, the third
It is also possible to do as shown in the figure.

Its purpose is to interlock the rods 24, 29 with the movement of the hydraulic cylinders 12, 18 when the cylinders 12, 18 open and close.

As this draft is structured as explained in detail above,
The driver can easily visually check whether the device is open or closed.

Therefore, work efficiency can be improved without performing inappropriate operations.

Note that this draft can be applied to push-pull devices for forklifts.

[Brief explanation of drawings]

Fig. 1 is a side view of a forklift truck equipped with a conventional push-pull device, Fig. 2 is a side view of a push-pull device operation confirmation device showing an embodiment of this draft, and Fig. 3 shows the main points in Fig. 2. 4 is an enlarged side sectional view of the main part in Fig. 2, Fig. 5 is a view taken in the direction of arrow C in Fig. 4, and Fig. 6 is a detail of the main part in Fig. 2. Figure 7 is an enlarged side sectional view of the main part in Figure 2, Figure 8 is a view taken along arrow D in Figure 7, Figure 9 is a sectional view taken along line A-A in Figure 2, and Figure 10. is a sectional view taken along line B-B in FIG. 2. Explanation of the main parts of the diagram: 1... Push-pull device, 2... Face plate, 3... Frame, 5... Sheet pallet clamping device,
6... Sheet pallet holding device, 7, 8...
... Display device, 10 ... Sheet pallet, 1
2...First hydraulic cylinder, 18...Second hydraulic cylinder, 24...10th cylinder, 27...
...1st display board, 29...20th board,
32...Second display board.

Claims (1)

[Scope of utility model registration request] In a push-pull device equipped with a sheet pallet clamping device attached to the lower part of the face plate and a sheet pallet holding device attached to the lower part of the frame, a first display plate is rotatably attached to the side of the face plate,
The other end of the tenth node connected to the first display plate is linked to the operation of the first hydraulic cylinder, and a second display plate is rotatably attached to the side surface of the frame, and the second display plate is connected to the second display plate. An operation confirmation device for a push-pull device, characterized in that the other end of the connected 20th node is linked to the operation of a second hydraulic cylinder.