JP2576069Y2 - Construction vehicle with crane device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction vehicle used for cargo handling and transportation at sites including irregular terrain and soft terrain.

[0002]

2. Description of the Related Art Conventionally, cargo handling operations on uneven terrain,
A construction vehicle having a working device in front of a wheel-type traveling body is used. This construction vehicle is generally equipped with large-sized low-pressure tires and is of an all-wheel drive type so that the traveling body can travel or work on uneven or soft terrain. The working device can be attached and detached with a quick coupler. When a bucket is installed as a working device, it is used as a wheel loader for transporting and loading rocks and earth, and when a fork is installed as a working device, it is used as a fork loader to carry cargo. Used for work. The fork loader can operate the hydraulic cylinder by operating the control valve by the driver, move the fork up and down, change the inclination of the fork tip, and transport the fork by inserting it into the load. it can.

[0003]

[Problems to be Solved by the Invention] However, when carrying work with construction vehicles on uneven terrain or soft ground, the construction vehicles may not be able to approach the cargo directly depending on the topography and ground conditions. In such a situation, it is necessary to move the conveyed object to a workable position by another machine such as a crane truck. In addition, when used as a fork loader, work such as placing a load on a fork carrying pallet to provide a fork insertion port on the load, or inserting a sleeper under the load to create a gap between the load and the ground To do this, other machines such as crane trucks are required. Furthermore, at the transportation destination, other machines such as a crane truck are also required for the work of unloading the luggage from the pallet for fork transportation and installing it at a predetermined position. As described above, in conventional transport operations using construction vehicles, other cargo-handling machines such as crane trucks that can travel on uneven or soft terrain are often used together, and if they cannot be used together, the content of the transport operation will be significant. There was a problem that is limited to.

The present invention solves the above-mentioned problems in a construction vehicle, and an object of the invention is to provide a construction vehicle capable of carrying out a wide range of cargo handling work without using another cargo handling machine such as a crane truck. .

[0005]

This invention SUMMARY OF THE INVENTION In order to solve the above problems, the side of the installed driver's seat in a central portion of the traveling body of a construction vehicle having a working device in front of the running body of the wheel type , A swivelable crane device is provided. The crane device has a front frame and work
Work is facilitated by providing a boom that is held higher than the device .

[0006]

[Function] If the terrain and ground conditions are not good and cannot be approached, or if there is another cargo or obstacle in front of the cargo and the passage is blocked, extend the crane boom and remove the cargo. After being lifted and moved to a place where work can be performed, cargo is transported by the work equipment. Since the crane device is installed on the side of the driver's seat in the center of the traveling body, the crane device has a small working radius when working with the working device.
The effective lifting capacity can be maintained. Also,
Since the crane device can turn around the driver's seat side, the work using the crane device can be performed safely over a wide range from the rear to the front of the vehicle body. It can be stored behind the vehicle body so as not to obstruct the field of view. Crane equipment
The front frame and work equipment of the traveling
Boom that is held higher than
The boom will flow when working with
Work without interference with the
Due to the collision of the boom with the front frame or working equipment
Damage accidents are also prevented.

When used as a fork loader, it is easy to place the load on the fork transport pallet, and the load of lifting the load with a crane device and placing it directly on the fork eliminates the need to insert a sleeper or the like under the load. You can also. In addition, it is also possible to take down the luggage from the pallet for transporting the fork and install it at a predetermined position.

[0008]

1 is a side view of a fork loader with a crane device according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a plan view showing the inside of a cab, and FIG. 4 is a fork loader with a crane device. It is explanatory drawing of the working state. The fork loader 1 with a crane device includes a fork via a lift arm 2, a link 3, and a quick coupler 16 in front of a wheel-type traveling body 11 including a rear frame 9 having a wheel 7 and a front frame 15. 5 are attached. Front frame 15 and lift arm 2
A lifting cylinder 4 is attached between the lifting arm 4 and the lifting arm 2. The lifting arm 2 rotates up and down around a pivot 17 at the base end by expansion and contraction of the lifting cylinder 4. A tilt cylinder 6 is mounted between the front frame 15 and the link 3, and the tilt of the fork 5 changes due to expansion and contraction of the tilt cylinder 6.

At the center of the front end of the rear frame 9 is a cab 1
The cab 14 has a driver's seat 13
Is provided. A crane device support 10 is fixedly provided on the side of the cab 14 of the rear frame 9, and a column 21 of a crane device 20 is erected on the crane device support 10. A base end of a telescopic boom 22 is pivotally attached to the upper end of the column 21.
An up-and-down cylinder 23 is mounted between the boom 2 and the column 21.
2 undulates about a pivot 24 at the proximal end. Column 2
1 has a turning mechanism (not shown) driven by a turning motor 26 via a turning speed reducer 25, and the boom 22 can turn by the working range angle θ. Column 21
Is provided with a winch 27, and a hook 28 suspended at the tip of the boom 22 can be hoisted and lowered. The mounting height of the boom 22 is set so as not to interfere with the front frame 15 even when the up-and-down cylinder 23 is reduced to the shortest.

In the cab 14, a steering wheel 18 for steering the vehicle 11 and a driver's seat 1 are provided in front of the driver's seat 13.
A fork operation lever 8 and a crane operation lever 12 are arranged on the right side of 3, and the driver operates the fork operation lever 8 and the crane operation lever 12 to
Raising cylinder 4, tilting cylinder 6, undulating cylinder 23,
Control valves (not shown) of actuators such as the swing motor 26 and the winch 27 can be controlled.
It should be noted that these actuators may be configured such that the driver leaves the driver's seat during the cargo handling operation and is operated by the remote control device.

When the fork loader 1 with a crane device cannot approach the load or the passage is blocked by another load or obstacle in front of the load, due to poor terrain or ground conditions during the loading and transporting operation. First, the boom 22 of the crane device 20 is extended, the cargo is lifted and moved to a workable place, and then the cargo is carried by the fork 5. Since the crane device 20 can turn by the working range angle θ, the work using the crane device 20 can be performed in a wide range from the rear to the front of the traveling body 11. It is easy to place the load on the fork transport pallet, and as shown in FIG. 4, the load 30 is lifted by the crane device 20 and placed directly on the fork 5, thereby saving the trouble of inserting a sleeper or the like under the load. You can also. Further, it is also possible to hang a load from a pallet for fork transport and install it at a predetermined position.

During traveling, the boom 22 of the crane device 20
Is turned backward and stored so as not to obstruct the driver's view. The lift arm 2 is provided with a vertical turning position detector, and the turning mechanism of the crane device 20 is provided with a turning position detector. The boom 22 can turn forward only when the lift arm 2 is at the lower position. By configuring the control circuit so that the lift arm 2 can rotate upward only when it is at the rear position, the lift arm 2 and the boom 2
2 can be prevented from being damaged.

In the fork loader 1 with a crane device according to the present embodiment, the fork 5 is attached via the quick coupler 16, so that when the cargo such as rocks is loaded and unloaded, the fork 5 is placed in the bucket. Etc. can be replaced with another working device.

[0014]

As described above, according to the construction machine with a crane device of the present invention, a wide range of cargo handling work can be performed without using other cargo handling machines such as a crane truck. Of the present invention
For construction equipment with crane equipment, the crane equipment
It is installed beside the driver's seat in the center,
The crane device can be mounted on the work equipment
Work radius becomes smaller in combination work with
Effective lifting capacity can be maintained.
When working with the device, a wide range from the rear to the front of the vehicle
Can be done safely, and when running construction vehicles
Ensure that the crane device does not obstruct the driver's view
Can be stored behind. Also for crane equipment
When turning, use the front frame of the
By installing a boom that is held at a higher position
The boom moves forward when combining with
The work is easy without interference with the
Accidents caused by collision of the boom with a part frame or work equipment
Is also prevented.

[Brief description of the drawings]

FIG. 1 is a side view of a fork loader with a crane device according to an embodiment of the present invention.

FIG. 2 is a plan view of a fork loader with a crane device.

FIG. 3 is a plan view showing the inside of the cab.

FIG. 4 is an explanatory diagram of a working state of a fork loader with a crane device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fork loader with a crane device 2 Lift arm 3 Link 5 Fork 7 Wheel 9 Rear frame 10 Crane device support 11 Traveling body 13 Driver's seat 14 Cab 15 Front frame 16 Quick coupler 20 Crane device 21 Column 22 Boom 27 Winch 28 Hook 30 Luggage

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-47-44651 (JP, A) JP-A-53-56801 (JP, A) Actually open Showa 53-27603 (JP, U) Actually open Showa 51- 115352 (JP, U) Japanese Utility Model Showa 58-92291 (JP, U) Japanese Utility Model Utility Model Showa 55-17092 (JP, U) Japanese Utility Model Showa 50-12117 (JP, Y1) (58) Field surveyed (Int. ⁶ , DB name) B66C 23/00-23/94

Claims (2)

(57) [Scope of request for utility model registration] 1. A construction vehicle provided with a working device in front of a wheel-type traveling body, wherein a rotatable crane device is provided beside a driver's seat installed in a central portion of the traveling body. Construction vehicle with crane device. 2. The construction vehicle with a crane device according to claim 1, wherein the crane device is provided with a boom that is held at a position higher than a front frame of the traveling body and a working device when turning.