JPH053520Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention relates to a work vehicle, particularly a work vehicle suitable for carrying cargo to the upper floors of a building when moving.

Conventional technology When relocating, when transporting luggage directly from the outside to the upper floors of a building, conventionally, the luggage is loaded onto the liftable rear loading platform of a work vehicle, and upon arrival at the new location,
The work vehicle is stopped close to the building, and then the rear cargo bed is raised and held at approximately the same height as a window on the upper floor, and the cargo on the rear cargo bed of the work vehicle is pulled into the building through the window. It was being carried upstairs. When transporting goods from the upper floors of a building, the procedure was reversed.

Problems that the invention aims to solve: If there are no obstacles such as telephone poles or trees near the building, the work vehicle can be brought close to the building, so the rear loading platform can be raised to almost the same height as the building's windows, etc. It is possible to carry the cargo on the platform to the upper floors of the building through the window or the like. However, if there are utility poles, trees, etc. near the building, it is not possible to bring the work vehicle close to the building. Therefore, with conventional work vehicles, even if the rear loading platform is raised, a large space is created between the rear loading platform and the building, making it impossible to directly transport the cargo on the loading platform to the upper floors of the building.

Means for Solving the Problems The present invention includes a telescopic frame 4 which is installed at the rear of the vehicle body 1 so as to be able to turn and raise and lower, and an elevating frame 20 which is attached to the uppermost frame 4c of the telescopic frame 4 so that it can be raised and lowered. A basket 15 is attached to the upper end of the elevating frame 20 so that the lower part of the side facing the elevating frame 20 can swing in the vertical direction, and a basket 15 is attached to the uppermost frame 4c, , a drive device 25 that performs an elevating motion so that the mounting portion of the basket 15 is held above the uppermost frame 4c, and a lowermost frame 4c.
a drive device 9 that is attached to the vehicle body 1 and provides telescoping motion to the upper frames 4b and 4c; a drive device 12 that is disposed between the vehicle body 1 and the telescoping frame 4 and provides the telescoping frame 4 with a lifting motion; It is attached between the basket 15 and the lifting frame 20, and the basket 1
5 and a balance holding device 30 that holds the work vehicle in a horizontal state.

Embodiment FIGS. 1 to 4 show embodiments of the present invention.

In the drawings, 1 is a vehicle body, 2 is a rear loading platform, 3 is a turntable that is arranged approximately at the center of the rear end of the rear loading platform 2 and rotates in the horizontal direction by an appropriate means, and 4 is a turntable 3. This telescopic frame 4 is equipped with a telescopic frame that can be raised and lowered.
The lowermost frame 4a is pivoted to the turntable 3.

The telescoping frame 4 has unit frames 4a, 4b, and 4c each having a C-shaped cross section and having substantially constant lengths, and a lowermost frame 4a and an intermediate frame 4b.
The uppermost frame 4c is sequentially fitted into the intermediate frame 4b so as to be expandable and retractable, and the frames 4b and 4c other than the lowermost frame 4a can be slid and expanded by the same length at the same time. In FIG. 3, each frame 4a, 4b, 4c is separated for convenience of explanation. 5 and 6 are pulleys rotatably supported on the upper and lower ends of the intermediate frame 4b of the telescoping frame 4; 7 and 8 are strips of a predetermined unit length wrapped around each pulley 5 and 6; 7 has one end attached to the lower end a of the uppermost frame 4c and the other end attached to the lowermost frame 4a.
The strip 8 is fixed to the upper end part b, and one end of the strip 8 is fixed to the substantially middle part c of the uppermost frame 4c, and the other end is fixed to the upper end part d of the lowermost frame 4a. Reference numeral 9 denotes a frame telescoping hydraulic cylinder attached to the lowermost frame 4a of the telescoping frame 4;
The tip of the rod 10 is attached to the upper end of the intermediate frame 4b via a bracket 11, and by extension of the rod 10, the intermediate frame 4b slides and protrudes from the lowermost frame 4a, and is attached to the uppermost frame via the strip 7. The frame 4c is slidably projected from the intermediate frame 4b. Reference numeral 12 denotes a frame raising and lowering drive device disposed between the turntable 3 and the lowermost frame 4a of the telescoping frame 4, and in this embodiment, a hydraulic cylinder is used. This hydraulic cylinder 1
The base end 12a of the hydraulic cylinder 12 is pivotally connected to an arm-shaped bracket 13 attached to the turntable 3, and the tip of the rod 14 of the hydraulic cylinder 12 is pivotally connected to the middle part of the lowermost frame 4a. The frame 4 is moved to lie down. 15 is movable up and down to the top frame 4c of the telescoping frame 4,
The basket 15 is swingably mounted, and the basket 15 has peripheral walls 17 made of a net-like member or the like on both sides and the rear edge of the substrate 16, and has a front surface 15a.
The side wall 17a of the peripheral wall 17 is provided with an opening/closing door 15b on a part of the side wall 17a. 18 is a mounting plate attached to the center of the rear wall 17b of the basket 15, 19 is a bracket horizontally installed at the bottom of the mounting plate 18, and 20 is fitted into the uppermost frame 4c of the telescoping frame 4 so as to be movable up and down. The inserted elevating frame 21 is a support bracket installed horizontally on the upper part of the elevating frame 20, and the bracket 19 is pivotally supported on the support bracket 21 by a pivot 22, so that the elevating frame 21 can swing the basket 15 in the vertical direction. 2
Attach to 0. In short, the basket 15 is mounted on the lifting frame 20 with most of the basket 15 projecting upward from the lifting frame 20. 23 and 24 are pulleys rotatably supported on the upper and lower ends of the uppermost frame 4c of the telescopic frame 4; 25 is a hydraulic cylinder for lifting and lowering the basket attached to the uppermost frame 4c; A pulley 27 is rotatably attached to the tip. 28 is the above hydraulic cylinder 25
A strip of a predetermined length is wrapped around a pulley 27 at the tip of a rod 26. One end of this strip 28 is attached to the lower end e of the elevating frame 20, and the other end is attached to the telescopic frame 4.
It is fixed to the lower end of the uppermost frame 4c. 29
is a strip wrapped around each pulley 23, 24, 27, and one end of this strip 29 is attached to the lower end e of the lifting frame 20.
Attach the other end to the top frame 4 of the telescoping frame 4.
It is fixed to the upper end f of c. 30 is basket 15
In this embodiment, the balance between the inclination angle detection sensor 31 and the control device 32 disposed inside the basket 15, the central part of the base plate 16 of the basket 15, and the lower part of the lifting frame 20 is The inclination of the basket 15 is detected by an inclination angle detection sensor 31 and outputted to a control device 32, which detects the inclination angle detection sensor 3.
1, the extension length of the rod 34 of the hydraulic cylinder 33 is changed to maintain the basket 15 in a horizontal state at all times. Note that 35 is a jack on the vehicle body 1.

If there are telephone poles, trees, etc. near the building, carry the cargo to the upper floors of the building as follows.
It is assumed that the telescoping frame 4 is retracted and the basket 15 is held at the lower end of the uppermost frame 4c.

First, after loading a predetermined amount of cargo into the basket 15 located at the lower end from the front surface 15a, when the hydraulic cylinder 25 for raising and lowering the basket is operated, the rod 26 is extended and the pulley 27 at the tip of the rod 26 is moved.
moves upward.

Then, an upward pulling force acts on the strip 28,
The elevating frame 20 rises along the uppermost frame 4c of the telescoping frame 4. As the elevating frame 20 rises, the basket 15 is held at the rising end above the uppermost frame 4c, that is, in a state where it protrudes from the uppermost frame 4c. From now on, the basket 15 is placed in the uppermost frame 4c.
Since the telescopic frame 4 is in an upwardly protruding state, the telescoping frame 4 in the extended state is moved up and down, and the balance maintaining device 3 is
0, even if the basket 15 is always displaced horizontally, there is no obstacle at all on the back of the rear wall 17b of the basket 15, and therefore the rear wall 17b of the basket 15 and the telescopic frame are The telescopic frame 4 can be freely raised and lowered without interfering with the frame 4.

Next, the turntable 3 is rotated so that the front surface 15a of the basket 15 faces a wall surface of a building having windows, etc., and then the hydraulic cylinder 9 for extending and contracting the frame is operated. Then, the rod 10 of the hydraulic cylinder 9 is extended, and the intermediate frame 4b of the telescoping frame 4 slides and protrudes upward by a predetermined distance from the lowermost frame 4a. At the same time, the protrusion of the intermediate frame 4b causes a pulling force to act on the strip 7 via the pulley 5, and the uppermost frame 4c slides and protrudes upward from the intermediate frame 4b. When the basket 15 reaches a desired height, the operation of the frame telescoping hydraulic cylinder 9 is stopped.

Next, the hydraulic cylinder 12 for raising and lowering the frame is operated to lower the telescoping frame 4 toward the building at a predetermined angle, so that the front surface 15a of the basket 15 approaches a window or the like on the upper floor of the building. At this time, the protrusion length of the rod 14 of the hydraulic cylinder 12 is
Adjust according to the distance between 5 and the building, and place basket 1.
5 is always maintained in a horizontal state by the above-mentioned balance maintaining device 30 (see FIG. 4).

After bringing the basket 15 close to a window on the upper floor of the building, the operation of the hydraulic cylinder 12 for lowering the frame is stopped, and the cargo loaded in the basket 15 is moved from the open front surface 15a of the basket 15 to the upper floor of the building. Bring it in. Fine adjustment of the basket 15 in the vertical direction is possible by vertically moving only the elevating frame 20 with respect to the uppermost frame 4c using the elevating hydraulic cylinder 25. After this load has been carried in, when the frame telescoping hydraulic cylinder 9 is operated to retract the rod 10, the intermediate frame 4b of the telescoping frame 4 slides into and retracts into the uppermost frame 4a, and at the same time With the retraction of the intermediate frame 4b, a pulling force is applied to the strip 8 via the pulley 6, and the uppermost frame 4c slides into and retracts into the intermediate frame 4b. After the frames 4b and 4c of the telescoping frame 4 are retracted, the hydraulic cylinder 12 for raising and lowering the frame is operated to raise the rod 1.
4 is withdrawn and the telescopic frame 4 is erected.
Thereafter, the turntable 3 is rotated to its original position, the hydraulic cylinder 25 for raising and lowering the basket is operated, and the rod 26 is retracted. Then, the pulley 27 at the tip of the rod 26 of the hydraulic cylinder 25 moves downward, which applies a downward pulling force to the strip 29, causing the elevating frame 20 to move along the uppermost frame 4c of the telescoping frame 4. and descend. By lowering the elevating frame 20, the basket 15
is held at the original position at the lowering end of the uppermost frame 4c. Load your luggage in the same way.

In the above explanation of the operation, the telescoping frame 4 is extended and then laid down. However, as described above, the elevating frame 20 is raised and the basket 15 is placed at the top of the telescoping frame 4. If it is held at the rising end above the upper frame 4c, it can be freely lowered or raised when the telescoping frame 4 is extended or retracted.

Further, in the above embodiment, a case was explained in which luggage was carried into the upper floor of a building when moving, but it can of course also be used for carrying luggage out.

Furthermore, the present invention is not limited to the above-mentioned embodiments, but can be used in all cases of transporting cargo to high places.

Effects of the invention According to the invention, an elevating frame equipped with a basket is provided so as to be moved up and down independently by an elevating hydraulic cylinder, and the basket is placed in a state of protruding upward from the elevating frame with respect to the elevating frame. Because of this, when the elevating frame is located at the top end of the uppermost frame, there is no obstacle at all on the back of the rear wall of the basket, and the telescoping frame in the extended state can be freely raised and lowered, and the basket can be raised and lowered. Fine adjustments in the vertical direction can be easily made by simply moving the lifting frame up and down. Therefore, even if there are obstacles such as utility poles or trees near the building, it is possible to directly bring cargo from outside to the upper floors of the building. Moreover, the carrying-in work is extremely simple and easy, and the labor of the worker can be greatly reduced.

[Brief explanation of the drawing]

FIG. 1 is a side view of a working vehicle according to the present invention, FIG. 2 is a plan view, FIG. 3 is an explanatory diagram of the operation, and FIG. 4 is a schematic diagram showing an example of the usage state of the working vehicle. 1...Vehicle body, 4...Extendable frame, 4c...
Uppermost frame, 12... Drive device, 15... Basket, 20... Lifting frame, 30... Balancing device, 31... Inclination angle detection sensor, 32...
...Control device, 33...Hydraulic cylinder.

Claims (1)

[Scope of claim for utility model registration] A telescoping frame installed at the rear of the vehicle body so as to be able to swivel and raise and lower, an elevating frame attached to the top frame of the telescoping frame so that it can be raised and lowered, and an upper end of the elevating frame, A basket whose lower part on the side facing the elevating frame is vertically swingable; and the basket is attached to the uppermost frame, and at the rising end of the elevating frame, the mounting part of the basket is held above the uppermost frame. A drive device is installed on the lowermost frame and provides an elongated movement to the upper frame, and a drive device is installed between the vehicle body and the telescoping frame and provides the elevating motion on the telescoping frame. a drive device that provides a
A work vehicle characterized by comprising a balance holding device that holds a basket in a horizontal state.