JPH057276B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a container for a cargo handling vehicle, and more particularly, to a container for a cargo handling vehicle that is detachably supported on a lift arm and can be loaded and unloaded onto a vehicle body. In particular, it relates to improvements to the bottom structure of the container.

[Conventional technology]

Cargo handling vehicle 1 for transporting container 3 shown in FIG.
A cargo handling device 2 for loading and unloading containers 3 onto and from the vehicle body is attached to the vehicle. In order to handle the container 3 with the cargo handling device 2, it is necessary to support the container 3, and there are support shafts 4 on the left and right sides of the container 3.
is displayed. In order to receive the support shaft 4, the cargo handling device 2 is provided with a lift arm 5 having a support portion 6 formed thereon, and a support shaft 9 attached to the vehicle body 7.
It is possible to rotate forward and backward around the center by a hydraulic cylinder 8.

In the cargo handling device 2 having this type of lift arm, the container 3 is supported by the tip of the lift arm 5 via a pair of left and right support shafts 4, and the mounting position of the support shafts 4 is fixed. container 3
The container 3 is placed above the center of gravity of the container 3, and is designed to prevent the container 3 from wobbling during cargo handling.

The lift arm 5 is rotated forward to load the container 3 onto the vehicle body 7, and rotated backward to unload the container 3 onto the ground. A pair of left and right support legs extending in the front-rear direction are provided on the bottom surface of the container 3, and when mounted on a vehicle, the support legs are mounted on a mounting portion formed on the upper surface of the frame of the vehicle body. Also, when the container 3 is lowered to the ground, its support legs touch the ground and the container 3
The child is now able to maintain an independent posture.

[Problem to be solved by the invention]

By the way, when the cargo handling vehicle 1 loads or unloads the container 3 in a place where there is a lot of earth, sand, or mud, the earth, sand, or mud often adheres to the contact surfaces of the support legs provided at the bottom of the container. When the lift arm 5 of the cargo handling device 2 is rotated forward and the container 3 is placed on the vehicle body 7, the container 3 placed on the mounting section on the upper surface of the frame may be damaged by dirt or mud that adheres to the ground contact surface of the support legs. This may result in unstable vehicle installation, such as rattling. As a result, there is a problem in that the container 3 is difficult to be transported smoothly by the cargo handling vehicle.

The present invention has been made to solve the above-mentioned problems, and its purpose is to ensure that when the container of a cargo handling vehicle is mounted on the mounting portion formed on the upper surface of the frame of the vehicle, the container will be able to move normally without rattling. To provide a container for a cargo handling vehicle that can maintain its posture and can be smoothly transported without shifting while traveling.

[Means to solve the problem]

The present invention supports the left and right sides of the container by a pair of lift arms provided on the left and right sides of the vehicle body, which can rotate synchronously in the front and rear directions around a support shaft extending in the left and right direction of the vehicle body, and by the operation of hydraulic cylinders. Loaded onto a cargo handling vehicle that can load containers on the ground at the rear of the vehicle onto the vehicle by rotating the lift arm forward, and unload the containers on the vehicle onto the ground at the rear by rotating the lift arm backwards. Applies to containers.

Its features are as shown in FIGS. 1 and 2, on the bottom surface 3a of the container 3, there are two frames 22, 22 (see FIG. A pair of left and right vehicle-mounted support legs 18, 18 are provided to be mounted on mounting portions 19, 19 formed on the upper surface of the vehicle. Two locations on the front and rear sides of each of the vehicle support legs 18 (see Figure 6)
The support leg 18 protrudes downward from the vehicle support leg 18 and directly supports the container 3 when the container 3 is on the ground, while it is defined between frames extending front and rear and left and right of the vehicle body 7 when the container 3 is mounted on the vehicle. Grounding support legs 20, 20 are formed to be fitted into the space 30 (see FIG. 7) to restrict displacement of the container 3 in the front, rear, right and left directions.

[Effect]

The container is supported by a pair of lift arms 5 provided on the left and right sides of the vehicle body 7 of the cargo handling vehicle 1, and when the hydraulic cylinder 8 is extended, the lift arm 5 of the cargo handling device 2 rotates backwards, and the container 3 is lifted off the vehicle body 7. It is then shipped to the ground at the rear.

The container 3 is provided with a pair of left and right vehicle-mounted support legs 18, 18 extending in the front-rear direction on its bottom surface 3a, while grounding support legs 20, 20 are provided at two locations on the outside of each of the vehicle-mounted support legs 18. Further, the grounding support leg 20 thereof protrudes below the vehicle-mounted support leg 18. Therefore, the four grounding support legs 20 can be grounded to support the container 3 without grounding the vehicle-mounted support legs 18. Even if dirt or mud from the loading/unloading area adheres to the grounding support legs 20, the dirt or mud will not adhere to the vehicle-mounted support legs 18.

When the hydraulic cylinder 8 is contracted and the lift arm 5 is rotated forward, and the container 3 is loaded onto the vehicle body 7,
Vehicle-mounted support legs 18, 1 that are free of mud and sand, etc.
8 is mounted on mounting parts 19, 19 formed on the upper surfaces of the frames 22, 22 of the vehicle body 7, and maintains a normal posture without rattling. On the other hand, the ground support leg 2
0 and 20 are fitted into the gap 30 between the frames of the vehicle body 7, and the displacement of the container 3 during transportation is regulated.

〔Effect of the invention〕

According to the present invention, even if a container is placed in a place with a lot of earth, sand, or mud, only the grounding support legs touch the ground, and the vehicle-mounted support legs do not touch the ground, thereby preventing mud from adhering to the support surface of the vehicle-mounted support legs. can be eliminated. As a result, when the container is mounted on the mounting portion formed in the frame of the vehicle body, there is no possibility of rattling due to mud being caught in the container. In addition, when the container is mounted on a vehicle, the grounding support legs of the container are fitted into the gaps between the frames to restrict movement of the container. As a result, displacement of the container when the cargo handling vehicle makes a curve or accelerates or decelerates while traveling is prevented, making container transportation safer and smoother.

〔Example〕

The present invention will be described in detail below based on examples thereof.

FIG. 2 shows an example of a cargo handling vehicle 1, in which a container 3, which can be attached to and detached from a cargo handling device 2, can be loaded and unloaded onto a vehicle body 7. The car body 7 has a container 3
A pair of left and right lift arms 5, 5 (see Figure 3) are attached to support and unload the vehicle body 7.
It is supported so as to be rotatable back and forth around a support shaft 9 fixed to.

A recessed support portion 6 is formed on the tip side of the main body of the lift arm 5, and an edge portion is provided in the front and back direction, and the support portion 6 engages with the support shaft 4 extending to the left and right of the container 3. The container 3 is supported by the container 3. When the lift arm 5 rotates back and forth, the support shaft 4 rotates and slides on the support portion 6 and rolls in response to the forward and backward rotation, thereby loading and unloading the container 3. Incidentally, a connecting shaft 26 is attached to the rear lower portions of the left and right lift arms 5, 5, and the two are integrated to synchronize rotation and increase rigidity.

The lift arm 5 is configured to be rotated forward and backward by the expansion and contraction movement of a hydraulic cylinder 8 that is swingably mounted on the vehicle body 7. The tips of each piston rod are attached to both the left and right lift arms 5 via pin shafts 16, and when the piston rods are extended, the lift arms 5 are rotated backward to the position of the imaginary line. Note that outriggers 27 with built-in hydraulic jacks (not shown) are provided on the rear left and right sides of the vehicle body 7.
The vehicle body 7 is prevented from taking a head-up position.

As described above, in the cargo handling vehicle to which the present invention is applied, a pair of lift arms 5 provided on the left and right sides of the vehicle body are rotatable in the front and rear directions in synchronization about the support shaft 9 extending in the left and right direction of the vehicle body 7. 5 supports the left and right sides of the container 3 whose upper surface is open, and the container 3 on the ground at the rear of the vehicle body is loaded onto the vehicle body by forward rotation of the lift arm 5 by the operation of the hydraulic cylinder 8.
Container 3 on the vehicle body when the lift arm 5 rotates backwards
It is now possible to unload it to the ground at the rear.

In this example, in order to maintain the horizontal posture of the container 3 while it is rotating back and forth and to ensure smooth loading and unloading work, the container 3 is rotated back and forth around the support shaft 11 (see Figure 4). A movable dogleg-shaped front arm 12 is provided. Note that a hydraulic cylinder 10 is provided for the front arm 12 via a pin shaft 17, but it is not for loading and unloading the container 3, but for independently rotating the front arm 12 forward and backward.

A hook 14 is attached to the upper end of the front arm 12 and opens and closes in accordance with the expansion and contraction of the hydraulic cylinder 13, and the hook 14 holds a clamping shaft 15 (see FIG. 1) located at the upper front part of the container 3. It's becoming like that.

As shown in FIG. 4, the imaginary side connecting the support shaft 4 of the container 3 and the clamping shaft 15 is parallel to the imaginary side connecting the support shaft 11 of the front arm 12 and the support shaft 9 of the lift arm 5. A parallelogram is formed with the supporting shaft 4, the clamping shaft 15, the supporting shaft 11, and the supporting shaft 9 as vertices. By extension of the hydraulic cylinder 8, the container 3 is unloaded while maintaining a horizontal attitude, and is loaded by being reduced.

On the other hand, the above-mentioned support shaft 4 is provided at the upper part of the central position in the longitudinal direction of the container 3 shown in FIG. A clamping shaft 15 is provided, the support shaft 4 is supported by a support portion 6 of a lift arm 5, and the clamping shaft 15 is held by a hook 14.

As shown in FIG. 6, on the bottom surface 3a of the container 3, a pair of left and right vehicle-mounted support legs 1 extending in the front and back direction are provided under a reinforcing member 3A attached in the left and right direction.
8 is provided. Note that a bottom plate 3B is attached along the inner surface of the reinforcing material 3A by welding or the like. When the container 3 is mounted on the vehicle body 7, the support surface 18a of the vehicle support leg 18 is attached to a mounting portion 19 (see FIG. 7) formed on the upper surface of two frames extending in the longitudinal direction of the vehicle body 7, which will be described later. This makes it possible for the container 3 mounted on the vehicle to maintain a normal transportation posture.

Grounding support legs 20 projecting downward from the two vehicle-mounted support legs 18 are provided at two locations on the front and rear sides of each of the two vehicle-mounted support legs 18 . A hollow portion 20b is formed in the script body to reduce weight, and a plate material covering the lower part of the hollow portion 20b forms a ground plane 20a. The ground plane 20a has slopes at the front and rear, and as shown in FIG.
8 is connected to the end of the support surface 18a. When the container 3 is on the ground, the grounding surface 20a of the grounding support leg 20 is grounded to directly support the container 3 without the vehicle support leg 18 being grounded.

The rectangular frame body 21 of the vehicle body 7 shown in FIG. 7 forms the lower part of the vehicle body 7 as shown in FIG. 21C, as shown in FIG. A pair of left and right frames 22, 22 (see FIG. 7) mounted so as to straddle the front sub-frame 21A and the rear sub-frame 21C are located approximately in the center of the vehicle body 7. Frame 22, 22
The above-described mounting portions 19, 19 are formed on the upper surface of.

By the way, by making a curve or accelerating/decelerating while the container 3 is loaded and traveling, the container 3
may try to shift. The inner side 2 of the grounding surface 20a of the grounding support leg 20 shown by the two-dot chain line in FIG.
Since point 0c is close to the outer surface 22a of the frame 22 with a certain distance,
0c comes into contact with the opposing outer surface 22a, and further displacement of the container 3 in the left-right direction is prevented.

Needless to say, the smaller the deviation, the better for transportation, and a pair of auxiliary frames 23, 23, which are close to the outer side 20d of the grounding support leg 20 and extend in the front-rear direction, are parallel to the frames 22, 22. are provided on the subframes 21A, 21B, and 21C. Also, for example, subframe 21
When the distance between B and 21C is long, a pair of short auxiliary frames 24 and 25 are installed as necessary, and the space 30 defined between these left and right frames and the above-mentioned front and rear frames is When the grounding support legs 20 are fitted, when the container 3 is mounted on a vehicle, it is possible to restrict displacement of the container 3 in any of the front, rear, right, and left directions.

Note that if the grounding support leg 20 protrudes further downward than the in-vehicle support leg, the upper surfaces of the auxiliary frames 24 and 25 may be lower than the frame 22, but if the amount of protrusion is small, It is sufficient to attach it so that it is on the same level as the frame 22, the auxiliary frame 23, etc. In any case,
The position and height of the frame attached to the frame body 21 are selected to match the bottom structure of the container, or the on-vehicle support legs 18 and the ground support legs 20 are selected in consideration of the frame structure of the vehicle body. The location and size are selected.

In the cargo handling vehicle container configured as described above, the container can be smoothly loaded and unloaded and transported in the following manner.

When the cargo handling vehicle 1 shown in FIG. 2 is in a stopped state with the container 3 on board, the hydraulic jack is extended and the outrigger 27 is grounded. In order to unload the container 3, the hydraulic cylinder 10 of the front arm 12 shown in FIG.
When the hydraulic cylinder 8 is extended, the lift arm 5 rotates about the support shaft 9 in the direction of arrow 28, and the front arm 13 rotates about the support shaft 11 in the direction of arrow 29. The container 3 has a support shaft 4 supported by a support part 6 of a lift arm 5, and a hook 14 at the top end of a front arm 12.
The vehicle is lowered onto the ground at the rear of the vehicle, as shown by the imaginary line in FIG. 2, while maintaining a horizontal position by holding the clamping shaft 15.

The container 3 is supported on the ground by the ground surfaces 20a of the four ground support legs 20. At that time, the ground plane 2
The support surface 18a of the vehicle-mounted support leg 18 located above 0a does not touch the ground. Therefore, even if dirt or mud may adhere to the grounding support leg 20 during loading and unloading, the support surface 18a of the vehicle-mounted support leg 18 will not be covered with dirt or mud. The hydraulic cylinder 8 is contracted, the lift arm 5 and the front arm 12 are each rotated forward, and the container 3 to be transported is loaded onto the vehicle body 7.

Vehicle-mounted support legs 1 provided on the bottom surface 3a of the container 3
Since the support surface 18a of the container 8 is free from mud and sand, it abuts the entire surface of the mounting portions 19, 19 formed on the upper surfaces of the frames 22, 22 shown in FIG. 7, and the container 3 is stabilized without shaking. The vehicle will be loaded in a normal position. At that time, the grounding support legs 20, 2 with mud and sand attached to the grounding surface 20a or the vicinity thereof.
0 is located outside the frame 22 and the frame 2
It is fitted into the voids 30, 30 formed between 1A, 21B, 21C, 23, etc., and is not affected by adhered mud and sand.

The ground support legs 20 of this example are each surrounded by the frame 22 and the auxiliary frames 23 to 25, and are prevented from shifting in the left-right and front-back directions in the container 3 due to curves and acceleration/deceleration. .
In addition, instead of the cargo handling device 2 equipped with the front arm 12 as in the above example, as shown in FIG. The container 3 of the present invention having the vehicle-mounted support legs 18 and the ground support legs 20 can also be applied to a vehicle to be unloaded.

[Brief explanation of drawings]

Fig. 1 is a front view of a container according to the present invention, Fig. 2 is a front view of a container according to the present invention;
The figure is an explanatory diagram of the configuration of a cargo handling device in a cargo handling vehicle to which the present invention is applied, FIG. 3 is a view taken along the - arrow in FIG. Fig. 6 is a cross-sectional view taken along the - line in Fig. 1, Fig. 7 is a plan view of the vehicle body loading platform, Fig. 8 is a sectional view taken along the line -
The figure is an explanatory diagram of conventional work performed by a cargo handling device in a vehicle that handles containers. DESCRIPTION OF SYMBOLS 1...Cargo handling vehicle, 3...Container, 3a...Bottom surface, 5...Lift arm, 7...Vehicle body, 8...Hydraulic cylinder, 9...Spin shaft, 18...Vehicle support leg, 19... Mounting part, 20... Grounding support leg, 2
2 to 25...Frame, 30...Void portion.

Claims (1)

[Scope of Claims] 1. The left and right sides of the container are supported by a pair of lift arms provided on the left and right sides of the vehicle body, which are rotatable in the front and rear directions in synchrony around a support shaft extending in the left and right direction of the vehicle body, and the container is supported by a hydraulic cylinder. A cargo handling vehicle that is capable of loading containers on the ground at the rear of the vehicle onto the vehicle by rotating the lift arm forward, and unloading containers on the ground at the rear by rotating the lift arm backwards. In the container to be loaded, a pair of left and right vehicle-mounted support legs are provided on the bottom surface of the container and are mounted on mounting portions formed on the top surfaces of two frames extending in the front-rear direction and extending in the front-rear direction of the vehicle body. , At two locations on the outside of each of the vehicle-mounted support legs, the vehicle-mounted support legs project downward from the vehicle-mounted support legs, and directly support the container when the container is on the ground, and when the container is mounted on the vehicle. A container for a cargo handling vehicle, characterized in that a ground support leg is formed that is fitted into a gap defined between frames extending in the front and rear and left and right directions of a vehicle body to restrict displacement of the container in the front and rear, right and left directions.