JPH0636073Y2 - Sheet pallet detector for cargo handling vehicles with push-pull - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a seat gripper for a cargo handling vehicle with a push-pull in which a face provided with a seat gripper is provided so as to be movable in the front-rear direction along with a fork claw that moves up and down. The present invention relates to a sheet pallet detection device that determines whether a pallet has been properly inserted.

[Conventional technology]

The following are known as cargo handling vehicles with push-pull.

That is, a fork claw is provided so as to be able to move up and down along a mast provided in the front part of the vehicle body, and a face provided with a seat gripper is provided along the fork claw so as to be movable in the front-rear direction.
The face is moved forward to the front position, the sheet pallet laid under the load is gripped by the sheet gripper, the face is moved backward while the face is moved backward, and the load is pulled together with the sheet pallet onto the fork claw. During the unloading work, while the grip of the sheet pallet by the sheet gripper is released, the face is moved forward to the front position and the vehicle body is made to travel backward, pushing the load forward along with the sheet pallet along the fork claws and placing the load. Cargo handling vehicle with push-pull.

[Problems to be solved by the device]

In such a loading and unloading vehicle with push-pull, the sheet gripper is opened and the vehicle body is moved forward so as to face the sheet pallet inside the sheet gripper during the unloading work, and then the sheet gripper is gripped to grip the sheet pallet. However, because it is provided below the seat gripper and face, it is hard for the operator to see from the driver's seat,
It is very difficult to visually confirm whether the sheet pallet has been inserted properly into the sheet gripper.
As shown in FIG. 6, when the sheet pallet a is excessively inserted, the end portion a'of the sheet pallet a hits the vertical piece d of the sheet receiving piece c of the sheet gripper b and is bent.
When the pressing piece e of the sheet pallet is moved downward and the sheet pallet a is grasped by the horizontal piece f, the end portion a ′ of the sheet pallet a has a bent gusset, which hinders the reuse of the sheet pallet, and the sheet pallet a In the case of the bag load g, the edge g ′ of the load g projects below the pressing piece e, and if the pressing piece e is moved downward as it is, it may be grasped and damage the edge g ′ of the bag load g. is there.

Therefore, an object of the present invention is to provide a seat pallet detection device for a cargo-handling vehicle with a push-pull capable of solving the above-mentioned problems.

[Means and Actions for Solving the Problems]

A means for detecting the insertion amount of the sheet pallet inserted on the horizontal piece of the hook-shaped sheet receiving piece constituting the sheet gripper, a means for determining the insertion state based on the detected amount, and a display operated by the determination signal The sheet pallet detecting device is provided with a means so that the operator can surely know that the sheet pallet has been properly inserted into the sheet gripper.

〔Example〕

As shown in FIG. 3, the vehicle body 1 is provided with driving wheels 2, steering wheels 3, a driver's seat 4 and a steering member 5, and a mast 6 is tilted forward and backward by a tilt cylinder 7 at the front portion of the vehicle body 1. The fingerboard 8 is freely provided, and the fingerboard 8 can be moved up and down along the mast 6.
A fork claw 9 is attached to the fork, and a face 10 is movably provided in the front-rear direction by a moving mechanism 11. A hook-shaped sheet receiving piece 12 and a pressing piece are provided under the face 10.
A sheet gripper 14 composed of 13 is provided, and the sheet pallet B laid under the load A is faced between the sheet receiving piece 12 and the pressing piece 13, and the pressing piece 13 is moved to move the sheet pallet B.
A cargo handling vehicle with a push-pull is configured such that the sheet receiving piece 12 and the pressing piece 13 are gripped with each other.

As shown in FIG. 1, the pressing piece 13 is moved up and down by a cylinder or the like between a gripping position and a releasing position, and in order to detect that the sheet pallet B is properly inserted into the sheet gripper 14, the pressing piece is pressed. The first sheet detecting means 15 is provided on the piece 13 and the second sheet detecting means 16 is provided on the lower portion of the face 10 as the sheet receiving piece.
The sheet detection signal is provided so as to face the 12 horizontal pieces 12a, and the sheet detection signal is inputted to the calculation unit 17 as shown in FIG. 18 is provided in front of the driver's seat 4 of the vehicle body 1.

The moving mechanism 11 includes a frame 19, a link 20 and an electric motor (not shown), and the link 20 is expanded and contracted by the electric motor. However, the link 20 may be expanded and contracted by a cylinder, and the frame 19 causes the fingerboard 8 to move. The face 10 is connected to the tip of the link 20.

Then, as shown in FIG. 3, the vehicle body 1 is brought close to the load A, the face 10 is set at the front position, the sheet pallet B is faced between the sheet receiving piece 12 and the pressing piece 13, and the pressing piece 13 is moved. When gripping the sheet pallet B, the first and second sheet detecting means 15 and 16 may or may not be activated depending on the state in which the sheet pallet B is inserted on the horizontal piece 12a of the sheet receiving piece 12. Or

For example, as shown in FIG. 1, if the sheet pallet B is insufficiently inserted, the first sheet detecting means 15 does not reach the first sheet detecting means 15, so that the first and second sheet detecting means 15 and 16 do not detect and operate the computing unit 1.
Since the detection signal is not input to 7, the calculation unit 17 determines that the insertion is insufficient and displays the insufficient insertion on the display unit 18.

Further, as shown in FIG. 4, when the sheet pallet B is inserted at an appropriate position, that is, just below the pressing piece 13, the first sheet detecting means 15 operates to detect and a detection signal is input to the computing section 17,
The calculation unit 17 judges that the operation is appropriate and inserts it in the display means 18 to display the appropriateness.

Further, when the sheet pallet B is excessively inserted and reaches the vertical piece 12b of the sheet receiving piece 12 as shown in FIG. 5, the first and second sheet detecting means 15 and 16 are operated to detect and operate the computing section 17
A detection signal is input to each of them, and the signal is inserted into the calculation unit 17 and the excessive display is displayed on the display unit 18.

When the detection signal is input to the calculation unit 17 from the second sheet detecting means 16, there is no such a case, and it is determined that there is an error.

The first and second sheet detecting means 15 and 16 are optical switches having light emitters 15a and 16a and light receivers 15b and 16b.
6a is provided on the presser piece 13 and the face 10, and the receivers 15b and 16b
Is provided on the lateral piece 12a of the sheet receiving piece 12, but it may be a micro switch or the like.

Further, as a means for indicating the shortage, properness, and excessiveness of the display means 18, an indicator light, a character display plate, a buzzer, or the like may be used, or a signal for driving another device may be generated according to the calculation result. good.

Further, three or more sheet detecting means may be arranged side by side in the front-rear direction, or the insertion amount of the sheet pallet B on the horizontal piece 12a is digitally detected, and the insertion state is judged by the insertion amount. May be.

[Effect of device]

The sheet pallet B is the sheet receiving piece 12 of the sheet gripper 14.
Since the insertion state is judged based on the amount of the sheet pallet 12a inserted on the horizontal piece 12a in FIG. It is possible to detect whether it has been inserted, the sheet pallet B can be securely gripped, and the end of the sheet pallet B is bent,
It is possible to prevent damage to the edge of the bag-shaped load.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is an enlarged view of a seat gripper portion, FIG. 2 is a circuit diagram, and FIG. 3 is a front view of a cargo handling vehicle with push-pull, and FIG. , FIG. 5 is a diagram for explaining the detection operation, and FIG. 6 is a diagram for explaining a conventional defect. 1 is a vehicle body, 10 is a face, 12 is a sheet receiving piece, 12a is a horizontal piece, 13 is a holding piece, 14 is a sheet gripper, and 18 is a display means.

Claims (1)

[Scope of utility model registration request] 1. A face 10 is provided movably forward and backward along a fork claw 9 which can be raised and lowered with respect to a vehicle body 1, and is laid under the load A on the face 10. Sheet gripper 14 for gripping and releasing sheet pallet B 14
In the cargo handling vehicle with push-pull provided with the sheet gripper 14, the sheet gripper 14 includes a horizontal piece 12a and a vertical piece 12b, and a hook-shaped sheet receiving piece 12, and a pressing piece 13 that moves up and down toward the horizontal piece 12a of the sheet receiving piece 12. The sheet receiving piece 12
Means for detecting the insertion state of the sheet pallet B inserted on the horizontal piece 12a, means for determining whether the insertion of the sheet pallet B is insufficient, proper or excessive by the detection signal, and display operation based on the determination of the means. Display means 18
A sheet pallet detection device for a cargo handling vehicle with a push-pull.