JPH0419054B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a support shaft engagement confirmation device for a container loaded on a cargo handling vehicle, and more specifically, the present invention relates to a support shaft engagement confirmation device for a container loaded on a cargo handling vehicle. The present invention relates to a cargo handling device that can handle cargo.

[Prior art]

Cargo handling vehicle 1 transporting container 3 shown in FIG. 3
Some vehicles are equipped with a cargo handling device 2 for loading and unloading containers onto and from the vehicle body. In order to handle the container 3 with the device 2, it is necessary to support the container, and support shafts 4 are installed on the left and right sides of the container 3.
is displayed. In order to receive the support shaft 4, a pair of left and right lift arms 5 each having a support portion 6 are provided and are attached to the vehicle body 7 via a lift cylinder 8 and a support shaft 9 so as to be rotatable forward and backward.
Therefore, by moving the container 3 forward or backward by the rotation of the lift arm 5, the container 3 can be loaded or unloaded onto the vehicle body 7.

[Problem that the invention seeks to solve]

In the cargo handling device 2 as described above, it is possible to load and unload the container 3 onto the vehicle body 7 by rotating the lift arm 5 back and forth. Then, when loading the container 3 on the ground to the position shown by the solid line as shown by the dashed line, the support shaft 4 projecting left and right is engaged with the support part 6 of the lift arm 5.

By the way, the operator who operates the lift arm 5 must move from the driver's seat of the cargo handling vehicle 1 to the rear window glass 10.
The engaging work is performed while looking over the left and right support shafts 4 and the pair of lift arms 5. At this time, a part of the support shaft 4 of the container 3 and the support part 6 of the lift arm 5 are in the shadow of the container 3 as shown in FIG. become unable to understand clearly.
In order to engage the support shaft 4 with the support part 6, the operator rotates the lift arm 5 slightly to adjust the height, but this may lead to a mistake in determining whether the support shaft 4 is engaged or not. many. Therefore, if the lift arm 5 is rotated forward under the illusion that it is engaged, the container 3 may not be lifted or may fall sideways because only one support shaft is engaged, which may impede loading and unloading work. There is. Since the insertion work relies on visual inspection, the work requires time and effort, and the efficiency of the loading work is significantly reduced.

The present invention has been made to solve the above-mentioned problems, and its purpose is to simplify the work of visually engaging the support shaft with the support part, and to improve the efficiency of container loading work. An object of the present invention is to provide a support shaft engagement confirmation device for a vehicle loading container.

[Means for solving problems]

The features of the container support shaft engagement confirmation device of the present invention will be explained with reference to FIGS. 1 to 3. A removable container 3 is supported by a pair of lift arms 5 provided on the left and right sides of the vehicle body 7, and the lift arm 5 is swung back and forth by the operation of a lift cylinder 8 to load and unload the container 3. In the vehicle, a forked support portion 6 formed at the tip end of the lift arm 5 is provided with a support portion 6 so as to be tilted in contact with the support shaft 4 of the container 3 engaged with the support portion 6. A confirmation member 12 is attached that crosses the support side space 11.

[Effect]

When the support shaft 4 of the container 3 placed on the ground is engaged by the support part 6, the lift arm 5 is rotated backwards to fall to the rear of the vehicle, and the support part 6 is made almost at the same height as the support shaft 4. The vehicle body 7 is moved backward and the support portion 6 is engaged with the support shaft 4. When engaged, the support shaft 4 comes into contact with the confirmation member 12 that crosses the support part side space 11,
The confirmation member tilts. After confirming the tilting of the confirmation member, the operator rotates the lift arm 5 forward.
If the confirmation member 12 is not engaged, the confirmation member 12 will not tilt, so the operator adjusts the height by further moving the vehicle body 7 backward or tilting the lift arm 5 further. On the other hand, if the lift arm 5 is engaged with the support part 6, there is no need to move the lift arm 5 any further, and the container 3 can be prepared for loading in a short time.

〔Effect of the invention〕

In the present invention, a confirmation member that crosses the lateral space of the support part is attached near the bifurcated support part formed on the tip side of the lift arm, and the support shaft of the container that engages with the support part comes into contact with the confirmation member. Since the confirmation member is then tilted, the operator can visually check whether or not the support shaft is engaged with the support portion. Therefore, the engagement work is significantly simplified, labor is saved, and working time is shortened, and the efficiency of container loading work in the cargo handling vehicle can be significantly improved.

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof. FIG. 3 shows a cargo handling vehicle 1 to which the present invention is applied.
As an example, a container 3 that can be freely attached to and detached from the cargo handling device 2 is shown.
can be loaded and unloaded onto the vehicle body 7.
The vehicle body 7 has a pair of left and right lift arms 5 (one arm is shown) for supporting and unloading the container 3.
is attached and supported so as to be rotatable forward and backward about a support shaft 9 fixed to the vehicle body 7.

The distal end side of the main body of the lift arm 5 is bifurcated, and the base of the lift arm 5 forms a support portion 6 that engages with a support shaft 4 extending to the left and right of the container 3 to support the container 3. The support shaft 4 is attached above the center of gravity of the container 3, and is mounted on the support part 6 during cargo handling operation. Note that when the lift arm 5 rotates back and forth, the support shaft 4 is in sliding contact with the support portion 6 and rotates slightly. Incidentally, above the support shaft 9, a connecting shaft 13 is installed, which integrates the left and right lift arms 5, 5 and increases rigidity, at a position that does not impede the movement of the container 3 being loaded and unloaded.

The lift arm 5 is configured to be rotated forward and backward by the expansion and contraction movement of a lift cylinder 8 that is swingably mounted on the vehicle body 7. The tip of each piston rod is attached to both the left and right lift arms 5 via a pin shaft 14, and when the piston rod extends, the lift arm 5 rotates as shown by the two-dot chain line, and the container 3 moves as shown by the one-dot chain line. It is unloaded onto the ground behind the vehicle body 7.

By the way, a confirmation member 12 that crosses the support section lateral space 11 is attached to the lift arm 5 shown in FIGS. 1 and 2. In the free state, it is in the position shown by the solid line, and is in a position where the operator can easily see it when the lift arm 5 is rotated backwards. Note that the confirmation member 12 may be a flexible long pole, etc., since it is sufficient to confirm that the tip of the confirmation member 12 moves and engages with the support portion 6 when the support shaft 4 comes into contact with the confirmation member 12. That's fine. In this example, a long coil spring is used, and a colored marker 15 is attached to the tip of the spring. Therefore, the support shaft 4 engaged with the support part 6 is in the support part side space 1.
1 and comes into contact with the confirmation member 12, the confirmation member 12 is bent and tilted, and the marker 15 at the tip is displaced. Its shape is selected to be easy to identify, and another confirmation member 12 may be provided on the other side as shown by the dashed line in FIG. Note that a plate spring may be used instead of the above-mentioned coil spring, and if a non-flexible pole is used, a helical spring or the like may be provided at the base so that the pole can be tilted. Then, when the contact comes off, the confirmation member 1
2 should be able to be restored and clearly display whether or not engagement is present. Although such a confirmation member 12 may be provided on each of the left and right lift arms 5 as shown, it is necessary to provide it on at least the lift arm that is less visible from the driver's seat.

The cargo handling device 2 provided in the cargo handling vehicle 1 configured as described above can load and unload the container 3 onto the vehicle body 7 in the following manner. When loading the container 3 placed on the ground shown in FIG. 3 onto the cargo handling vehicle 1, the lift cylinder 8 is extended and the pair of left and right lift arms 5 are rotated backward. After bringing the cargo handling vehicle into a nearly horizontal position as shown by the dashed line,
to retreat. Adjust the amount of extension of the lift cylinder 8 as necessary to align the support shaft 4 as shown in FIG.
is made to face the support part 6, and the vehicle body 7 is further retreated to engage with the support part 6. When the support shaft 4 enters, the support shaft 4 passes through the support part side space 11 and comes into contact with the confirmation member 12 as shown in FIG. let The operator can know the engagement based on the displacement of the mark 15. When the container 3 is supported via the support shaft 4, the lift cylinder 8 shown in FIG.

In this way, engagement of the support shaft 4 with the support part 6 can be confirmed by the displacement of the indicator 15, so preparation for container loading work is significantly simplified and efficiency is improved. I can do it. Note that if the container 3 is lowered onto the ground and the vehicle body 7 is moved forward slightly, the support shaft 4 will be removed from the support portion 6 and the bent confirmation member 12 will return to its original state.

FIG. 6 shows an example of a different confirmation member 18, which is a portal-shaped flexible pole that crosses the support lateral space 11 on the inner and outer surfaces of the lift arm 5. A marker 15 is attached to the end member 18a, and the length of the pole is such that it does not interfere with the lift arm 5 during tilting.

The container support shaft engagement confirmation device of the present invention can also be applied to the cargo handling vehicle shown in FIG.
The vehicle is equipped with a front arm 21 for holding a posture holding member 20 provided at the upper part of the front end of the container 3 and keeping the container 3 to be loaded and unloaded in a horizontal posture. A flexible hook 22 is provided. Prior to the loading operation, the support shaft 4 is engaged with the support part 6 while observing the displacement of the confirmation member 12 as described above, and then the posture holding member 20 is fitted into the open hook 22 and the hook 22 is closed. When the lift cylinder 8 is reduced,
The container 3 is loaded into the vehicle body 7 as shown by the solid line while maintaining a substantially horizontal posture as shown by the two-dot chain line.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a lift arm equipped with a confirmation member, FIG. 2 is a view taken along the - line in FIG.
Fig. 5 and Fig. 5 are explanatory diagrams of the operation of the confirmation member in the lift arm, Fig. 6 is a front view of different confirmation members, Fig. 7 is a configuration diagram of a cargo handling vehicle equipped with a front arm, and Fig. 8 is a lift turned backwards. It is a state diagram when the arm is seen through a window. DESCRIPTION OF SYMBOLS 1...Cargo handling vehicle, 3...Container, 4...Support shaft, 5...Lift arm, 6...Support part, 7...
Vehicle body, 8... Lift cylinder, 11... Support section lateral space, 12, 18... Confirmation member.

Claims (1)

[Claims] 1. A removable container is supported by a pair of lift arms provided on the left and right sides of the vehicle body, and the lift arms are swung back and forth by the operation of a lift cylinder to load and unload the container. In the cargo handling vehicle, a space lateral to the support part is provided near the bifurcated support part formed on the tip side of the lift arm so that the support part is tilted in contact with the support shaft of the container engaged with the support part. A support shaft engagement confirmation device for a cargo handling vehicle loading container, characterized in that a confirmation member that crosses the container is attached.