JPH021358Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a lifting vehicle that lifts and transports relatively heavy items.

[Technical background of the invention and its problems] Generally, in warehouses, factories, and other workplaces, work such as transporting and stacking heavy objects is often performed using forklift trucks. However, for example, when transporting and arranging concrete side gutters and their covers at a road construction site, a lifting vehicle is often used, which is easier to use than a forklift vehicle, which requires high equipment costs. It will be done. Normally, this type of lifting vehicle has a lift section on the vehicle body, and is configured to lift the cargo using the lift and move the entire vehicle body for transportation.

However, in conventional lifting vehicles, the lift is fixed and cannot be rotated, so the entire vehicle body must be moved after lifting the load, resulting in poor workability. Furthermore, in the case of lifting work using a lifting vehicle, there is no problem if the weight of the cargo is small compared to the total weight of the entire lifting vehicle, but the weight of the cargo is large and becomes close to the weight of the vehicle. This could cause the vehicle to lose its balance and become unstable, or conversely, the rear of the vehicle could rise up and cause the vehicle to tip over.

[Purpose of the invention] The purpose of the invention is to be able to lift cargo lightly and reliably, to improve the workability of transporting it to a planned location, and to adjust the weight balance on the vehicle body side in response to the lightness and weight of the cargo. Our objective is to provide a lifting vehicle.

[Summary of the invention] The lifting vehicle according to the invention consists of a lift part with a booster mechanism using a cam mechanism having four fulcrums, the shaft of the lift part is rotatable, and the lift part is made rotatable. It is characterized by having a drawer-like footrest plate that serves as a balance weight.

[Embodiments of the invention] Hereinafter, the embodiments of the invention shown in FIGS. 1, 2, and 3 will be described. In each drawing,
A support frame 3 of arbitrary height is provided on a vehicle body 2 having wheels 1. A lift section 4 is located in the center of this support frame 3.
A bearing sleeve 6 for supporting a rotating shaft 5 is provided. The lift part 4 has a rotating shaft 5 with a collar 7 provided in the middle thereof.
is rotatable by being received on the upper surface of the bearing sleeve 6.

The lift section 4 provided on the upper part of the rotating shaft 5 is made up of a combination of a lifting hook section 8 for hoisting and suspending a load, and a boosting mechanism section 9 for applying a lifting force.

The hanging hook part 8 is attached to the cargo 10 as shown in FIG.
A pair of arms 12 having a pair of hooks 11 for gripping are connected rotatably about a fulcrum of a shaft 13, and the ends of the pair of arms 12 are connected to a pair of short arms 1.
4 and a shaft 15 at a fulcrum, and the ends of the pair of short arms 14 are attached to a hanging fitting 17 at a shaft 16 at a fulcrum.

As shown in FIGS. 1 and 2, the boost mechanism section 9 has one end connected to the hanging fitting 17 of the hanging hook section 8,
It has an operating arm 19 whose other end extends along the upper part of the vehicle body 2 and is rotatably attached to the middle of the rotation shaft 5 with a fulcrum shaft 18, and the upper end of the rotation shaft 5 is set at a right angle. A fulcrum shaft 21 is attached to the bent end 20.
Attach the cam plate 22 through the
The end of a connecting arm 24 attached to the fulcrum shaft 23 is rotatably connected to the vicinity of the free end of the working arm 19 by a fulcrum shaft 25. An operating arm 26 is fixed to the cam plate 22 as shown.

Furthermore, in the present invention, as shown in detail in FIGS. 1 and 2, a drawer-shaped footrest plate 27 that serves as a balance weight is provided on the floor of the vehicle body 2 so as to be freely pulled out. This footrest plate 27 is incorporated so as to move forward and backward through a guide 28 formed on the floor of the vehicle body 2, and has a foot portion 29 that rests on the ground at its end. Therefore, this footrest plate 27 can be freely pulled out and put into the floor of the car body 2, and when it is pulled out, it becomes a foothold for work, and the weight of the balance weight relative to the car body 2 is reduced depending on the size it is pulled out. Can be adjusted.

Next, the operation of the lifting vehicle of the present invention constructed as described above will be explained. The lifting vehicle of this invention is
For example, it is used to transport concrete gutters and their covers at road construction sites. Now, the lifting vehicle is brought close to the concrete lid 10 that is the cargo, the footrest plate 27 is pulled out by an appropriate amount, and when the worker places his foot on it, the vehicle body 2 becomes stable.

If the operating arm 26 is lifted in the direction of arrow _Y1 shown in FIGS. Using the four fulcrum shafts 21, 23, 25, and 18 of the bending part 20 of the moving shaft 5, the operating arm 19 is easily and lightly swung counterclockwise about the shaft 18, and the lift part 8 is moved downward. lower it down.

After gripping the lid 10 with the hook 11 of the hook portion 8, the operating arm 26 is then pushed up in the direction indicated by the arrow _Y2 from the dotted line position in FIGS. 1 and 2. When pressing down the operating arm 26,
The pressing force causes the operating arm 19 to swing clockwise about the fulcrum shaft 18 via the cam plate 22 and the connecting arm 24 and its fulcrum shafts 21, 23 and 25.

This swinging motion of the working arm 19 is transmitted to the hook portion 8 via the hanging fitting 17 as a lifting force. In the hook part 8, the lifting of the hanging fitting 17 acts as a force to grip the lid 10 on the pair of hooks 11 via the pair of short arms 14 and the pair of arms 12, and the luggage 10 is reliably grabbed and lifted up.

Then, as shown in FIG. 3, the lift section 4 is rotated about the rotation shaft 5 in the direction of arrow _Y3 , and
Hold 0 in a fixed position. Then, when the operating arm 26 is lifted again in the direction of arrow _Y1 in FIGS. 1 and 2, the hook portion 8 descends downward, allowing the baggage 10 to be quietly placed in a fixed position.

In the above work of lifting and suspending the load 10, when lifting the load 10, the booster mechanism 9 is connected to the end of the working arm 19, the bent portion 20 of the rotating shaft 5, and the cam plate 2.
2 and the connecting arm 24 and the four fulcrum shafts 18, 2
1, 24, and 25 and the lever action using the shaft 18 of the working arm 19 as a fulcrum, the relatively heavy concrete lid 10 can be easily lifted with a small acting force.

Also, this type of transport vehicle can carry up to 10 pieces of cargo.
However, in this invention, by pulling out the footrest plate 27 and placing your foot on it, you can balance it by putting your weight on it. Stable lifting work can be performed.

Further, after lifting the load 10, the entire lift part 4 can be rotated through 360 degrees around the rotation shaft 5, making it possible to easily carry the load 10 to a fixed position.

[Effects of the invention] As described above, according to the invention, a boosting mechanism consisting of a combination of a cam plate and three arms is adopted as the action point mechanism of the cargo lift section, and the entire lift section is rotated around the rotation axis. By making it rotatable as an axis, and by providing a pull-out foot plate with a balance weight on the floor of the vehicle body, it is possible to reliably lift cargo with a small amount of force and easily transport it to a fixed position. It has many advantages, such as being able to adjust the balance weight and perform work safely.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a lifting vehicle according to the present invention, and FIGS. 2 and 3 are a front view and a plan view showing the lifting vehicle according to the present invention. 1...Wheel, 2...Vehicle body, 3...Support frame, 4...
... Lift part, 5 ... Rotating shaft, 4 ... Bearing tube, 8 ...
...Hook part, 9...Boosting mechanism part, 10...Luggage,
11...Hook, 12, 14...Arm, 13,
15, 16...Shaft, 17...Hanging fitting, 18,2
1, 23, 25...Fully shaft, 19...Working arm, 20...Bending portion, 26...Operation arm, 27
...Drawer-shaped footrest plate.

Claims (1)

[Scope of utility model registration request] A vehicle body with wheels, a support frame provided on the floor of the vehicle body and having an arbitrary height and having a bearing in the center, a rotating shaft rotatably inserted into the bearing of the support frame, and the rotating shaft. A working arm is swingably attached to the moving shaft by a fulcrum shaft, a hanging hook portion having a hook for grasping a load is provided at one end of the working arm, and the other end of the working arm and the upper end of the rotating shaft are connected to each other. A cam plate and a connecting arm are connected to each other via four fulcrum shafts between the bending part, and an operating arm is fixed to the boosting mechanism part, and the boosting mechanism part is housed in the floor of the vehicle body so that it can be freely pulled out. A lifting transport vehicle characterized by comprising a drawer-like footrest serving as a balance weight.