JPS5818491B2 - excavator - Google Patents

Description

Detailed Description of the Invention The present invention relates to an excavator for construction and civil engineering equipped with a backhoe device, and in particular an excavator equipped with a conveyor device in order to improve the method of loading excavated earth and sand onto a transport vehicle. This is related to the improvement of.

・With an excavator equipped with this type of backhoe device, if the transport vehicle can be placed in parallel next to the machine vehicle when excavating with the backhoe device, the turning of the shovel of the backhoe device will be extremely small. Already done,
The cycle time is short and work efficiency can be increased.

However, in the case of construction work on narrow roads, placing a transport vehicle next to the aircraft vehicle would result in a complete road closure.
The transport vehicle may have to be lined up in a straight line in front of and behind the machine vehicle, in which case the shovel should be placed at 18 m after excavation.
It is necessary to turn 0 degrees and load the earth and sand into the transport vehicle.

Therefore, in such a working configuration, the cycle time of the excavator rotation of the backhoe device becomes extremely long, resulting in poor working efficiency.

Also, when making the turn, the excavator passes over the adjacent lane, so
Each time you make a turn, you have to stop passing vehicles in the adjacent lane, which actually results in a situation similar to a complete road closure.

Furthermore, repeating 180-degree back and forth turns as described above increases the physical effort and mental stress of the workers from a safety standpoint, and the ground the shovel passes over is littered with dirt and sand that falls from the shovel. There was a problem.

The present invention was made in view of the above circumstances, and in order to enable the excavator of the backhoe device to turn only slightly even if the transport vehicle is placed in front of or behind the body vehicle, the backhoe device can be moved from one end of the front and back of the body vehicle to the opposite side. An improved excavator is equipped with a conveyor device attached to the upper blade of the machine vehicle toward the transport vehicle at the other end of the side, and the conveyor device is mechanically folded midway through to reduce the size. This is what we provide.

For this purpose, according to the present invention, a conveyor device is installed in the front and back direction above the body vehicle using the backhoe device side force, and the excavator is simply turned to one end of the conveyor device to drop the earth and sand, and from then on, the conveyor device is used. Earth and sand are loaded onto a transport vehicle placed in front or behind the aircraft vehicle, and the frame of the conveyor device is divided into two parts, and as one frame moves up and down, the other frame is folded and stacked. , or - A special embodiment of the present invention will be described in detail with reference to the drawings.

1 and 2 show an embodiment in which a backhoe device is provided at the rear end of the airframe vehicle, and a dozer device having a lifting device is provided at the front end of the backhoe device. Reference numeral 1 denotes a body vehicle, which is provided with a backhoe device 2 at its rear end and a dozer device 3 at its front.

The body vehicle 1 is provided with wheels 5 and 6 at the front and rear of a frame 4, and a driver's seat 7 is provided near the rear of the center for normal running and for excavating and dozing work by the dozer device 3 in front.

Further, a Nara t-IJ gar 8 is attached to the rear end of the body vehicle 1 so as to be able to touch the ground, and a driver's seat 9 for operating the backhoe device 2 is provided immediately in front of this trigger 8.

In addition, the backhoe device 2 is attached to either the left or right of the rear lower part of the outrigger 8, and by grounding the outrigger 8, the load of the backhoe device 2 during work is not applied to the force of the aircraft vehicle 1. It has become.

In the backhoe device 2, the base of a boom 11 is pivotally supported on a support 10 protruding from the outrigger 8.
1, the dipper arm 13 is connected in a bent state via a rotatable connecting member 12.
A shovel 15 is further attached to the tip via a link mechanism 14 so as to rotate.

Further, a hydraulic cylinder 16 is installed between the support body 10 and the boom 11 to raise and lower the boom 11, and a hydraulic cylinder 17 is also installed between the boom 11 and the connecting member 12. The Ditzpa arm 13 and subsequent parts are rotated.

Furthermore, a hydraulic cylinder 18 is installed between the connecting member 12 and the link mechanism 14, and the link mechanism 14 is deformed to rotate the shovel 15. With this mechanism, the shovel 15 is pushed into the soil. Excavation work is done by moving into the ground and scraping it up towards you.

In the dozer device 3, another arm 21 is attached to one end of an arm 20 having a hydraulic cylinder 19, and a dozer 23 is attached to this arm 21 together with a hydraulic cylinder 22. The dozer 23 is moved up and down by putting it into the soil and scooping it up to perform excavation work, and by raising and lowering the arms 20 and 21 by the expansion and contraction of the hydraulic cylinders 19 and 22.

The present invention is an excavator configured in this manner, in which a conveyor device 24 is mounted on the side of the backhoe device 2 in the front-rear direction above the body vehicle 1.

The conveyor device 24 has a conveyor frame 25 whose front end is squared so as to protrude in front of the body vehicle 1 and further in front of the dozer 23, and whose rear end is used as a shovel during excavation work by the backhoe device 2 behind the body vehicle 1. An endless belt 30 is stretched inside the frame body 25 by a drive roller 26 and guide rollers 27, 28, and 29.

The frame body 25 is divided into two parts in front and back at the IJ gar 8, and the front frame body 25a and the rear frame body 25b are connected by a gear mechanism 31, and the outrigger 8 is connected to the frame body 25a through the gear mechanism 31. This allows the front and rear frames 25a, 25b to rotate up and down relative to each other using the mechanism 31 as a fulcrum.

A prime mover 32 that drives an endless belt 30 is mounted in front of the front frame 25a, and is connected to the upper end of the dozer 23 via a connecting rod 33, and earth and sand are injected into the upper part of the rear end of the rear frame 25b. A hopper 34 is attached thereto, and moving wheels 35 are attached to the lower part of the hopper 34.

To explain the gear mechanism 31 at the connecting portion between the frames 25a and 25b with reference to the drawings from FIG. Another leg 3B is vertically attached to a part slightly inside, and a reinforced support stand 39 is also fixed to the head of this leg 38, and the frames 25a, 25b are attached to these support stands 37 and 39. The left and right ends of one end are connected and supported using the gear mechanism 31, respectively.

Therefore, to explain the part of the support stand 37 on one side of the frames 25a, 25b, there is a shaft 4 at approximately the center of the support stand 37.
0 is fixed horizontally, and a large-diameter spur gear 41 with many teeth and a hinge 42 at the end of the front frame 25a are rotatably mounted on this shaft 40 with a spacer 43 in between.

Further, another shaft 44 is similarly fixed horizontally at a predetermined position above the support base 37, and a small-diameter spur gear 45 with a small number of teeth that meshes with the spur gear 41 is rotatably mounted on this shaft 44. , the hinge 4 at the end of the rear frame body 25b is connected to the spur gear 45.
6 are integrally coupled via coupling means 47.

Further, on the opposite side of the shafts 40 and 44 from the support stand 37 is a support member 48.
As shown in FIG. 6, holes 49.5 are formed on the same circle of the large diameter spur gear 41 and the hinge 42.
0 are drilled, and pins 51 are inserted into these holes 49 and 50 to lock the two together,
Ru.

Thus, since the present invention is configured as described above, the frames 25a and 25b of the conveyor device 24 as shown in FIG.
With the hinges extended in a straight line, insert the hinge 1 into the hole 49 of the spur gear 41 and the hole 50 of the hinge 42 and lock.

Then, when the front frame 25a is raised by the lifting means consisting of the hydraulic cylinders 19, 22 and the arms 20, 21 of the dozer device 3, the spur gear 41 rotates clockwise and the spur gear 45
rotates to the left, and the rear frame body 25b comes to stand up at 9 as shown in b.

Here, the number of teeth of the small diameter spur gear 45 relative to the large diameter spur gear 41 is set to be '>7.

Since the spur tooth ratio 45 and the frame 25b rotate approximately three times as much as the spur gear 41 and the frame 25a rotate, the frame 25a is
After the non-rotating spacer and the force of the frame 25b become perpendicular, it rotates further and falls down due to the force of the frame 25a, and finally both frames 25a and 25b overlap vertically and fold as shown in C. Become.

Therefore, at this time, the pin 51 is removed to free the large-diameter spur gear 41, and the frame body 2 is moved by the elevating means of the dozer device 3.
5a, the spur gears 41 and 45 idle and the frame 2
5b is also lowered together with the frame 25a in a state as shown in d.

Then, conversely, from the state d to the state C, the frame 25a,
25b is raised, and the pin 51 is inserted into the hole 49 of the spur gear 41 and the hole 50 of the hinge 42 and locked.

After that, when the frame 25a is lowered by the lifting means of the dozer device 3, the spur gear 45 rotates clockwise as the spur gear 41 rotates counterclockwise, and the rear frame 25'b separates from the frame 25a. It turns to the opposite side as shown in b, and starts to extend from the folded state.

When the frame body 25a reaches its lower limit, the frame body 25b also reaches its lower limit, and both frames 25a.

25b extends in a straight line and is connected as shown in a.

In this way, the frame body 25 of the conveyor device 24 is divided into two, and the frame bodies 25a and 25b are folded into two or stretched in a straight line by raising and lowering the front frame body 25a. are extended in a straight line, and a loading platform 53 of a carrier vehicle 52 is positioned below the front end thereof in series with the body vehicle 1.

After that, the conveyor device 24 is driven, and the backhoe device 2
The earth and sand excavated by the shovel 15 are rotated around 30 degrees and thrown into the hopper 34.

Thereafter, the soil is transported by the conveyor device 24 from the body vehicle 1' and the backhoe device 2 at the rear to the loading platform 53 of the transport vehicle 52 in front of it and loaded thereon.

Thereafter, by repeating the same work operation, the shoulder length is 154. 52.2 Excavation and transport vehicle for earth and sand during excavation
Loading is done continuously.

When the excavator is to be transported after the excavation work is completed, the frame 25 of the conveyor device 24 is folded as described above.

As a result, the long frame body 25 is shortened and stored in the upper part of the body vehicle 1, and it becomes possible to travel to another excavation site while being mounted on the body vehicle 1.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and the backhoe device 2 may be provided in front of the body vehicle 1 and earth and sand may be loaded from the rear force ζ onto a transport vehicle, or the dozer device 3 may be It is also good to add a dedicated elevator without using it.

As is clear from the above description, according to the present invention, the shovel 15 of the backhoe device 2 only needs to swing a short distance to the adjacent conveyor device 24, so the cycle time is significantly shortened and work efficiency is improved. improves.

In addition, this makes it possible to position the transport vehicle 52 side by side in front and behind the body vehicle 1, and the shovel 15 does not protrude into the opposite lane of the side force, so there is no need to close the road. It is very convenient for construction work.

Since the long frame 25 of the conveyor device 24 is folded from the middle, the conveyor device 24 can be moved without being removed.

and the frame body 25 is divided into two frame bodies 25''a
, 25b can be mechanically folded and unfolded by raising and lowering one surface of the shaft φ, so the operation is very easy.

” Brief description of the drawings Figure 1 is a perspective view showing an embodiment of the voice reduction machine according to the present invention;
Fig. 2 is a side view of the same, Fig. 3 is a perspective view of the folding part of the conveyor device, Fig. 4 is a partial side view of the same, Fig. 5 is a rear view of the same, Fig. 6 is a plan view of the same part, FIGS. 7a to 7d are explanatory diagrams of each operating state of the conveyor device.

1... airframe vehicle, 2... backhoe device, 3...
Dozer device, 8... Outrigger 124... Conveyor device, 25.25a, 25b... Frame, 31...
Gear mechanism.

Claims (1)

[Claims] 1. In an excavator equipped with a backhoe device at one end of the front and rear of the body vehicle, a conveyor device is installed on the side of the backhoe device in the direction of the upward longitudinal force of the body vehicle, and the conveyor device is installed at the intermediate portion in the longitudinal direction. In addition to being configured to be foldable, the folding joints of both are connected by a gear mechanism pivotally supported at the end of each divided conveyor, and the gear on the side of one divided conveyor is fixed or rotated with respect to the conveyor frame. A switching means is provided so that the gear can be moved freely, and with the same gear fixed to the conveyor frame, one divided conveyor can be raised and lowered around the axis of the same gear, and the other divided conveyor can be switched via the gear mechanism. An excavator characterized in that the conveyors on both sides are folded so as to overlap each other, or are extended in a straight line by moving up and down.