JPS5913617B2 - Excavator with conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an excavator that is equipped with a backhoe device and excavates and loads earth and sand, and in particular, excavates or scoops earth and sand with a 180-degree rotary type backhoe device to a transport vehicle. This invention relates to an improvement of a conveyor-equipped excavator equipped with a conveyor device to facilitate loading.

Excavators equipped with a backhoe device include one type in which the backhoe device is mounted on the vehicle body and can make a full 360-degree turn, and another type in which the backhoe device is attached to one end of the front and back of the vehicle body and can make a 180-degree turn.

The former type, which rotates fully 360 degrees, not only allows the transport vehicle to be placed next to the excavator's body vehicle in parallel to perform work efficiently with a short cycle time, but also allows the vehicle to be placed next to the excavator's body vehicle. If it is not possible to place them next to each other, it is convenient to arrange them in a straight line in front of and behind them so that the earth and sand can be directly loaded onto the transport vehicle.

However, in the case of construction work on a narrow road, if a transport vehicle is placed in series with the excavator's body vehicle in the same lane as described above, there will be no transport vehicle in the adjacent lane, which will obstruct the passage of vehicles in the adjacent lane. However, since the excavator passes over the adjacent lane when making a turn, the traffic in the adjacent lane must be stopped each time the excavator makes a turn, resulting in a situation similar to a complete road closure.

At this time, repeated 180-degree back-and-forth turns from the excavation site at the rear of the excavator to the transport vehicle in front of it increase the physical effort and mental stress on the worker, and the ground the excavator passes through increases. Earth and sand falling from the excavator is scattered.

Furthermore, such a type that can fully rotate 360 degrees is structurally complex and very expensive.

On the other hand, the type that rotates 180 degrees and a half has a simple structure and is inexpensive, but it is not possible to directly load earth and sand with a shovel unless the transport vehicle is placed in parallel next to the body vehicle.

Therefore, if the transport vehicle cannot be placed next to the aircraft vehicle, the work cannot be carried out, and in the case of construction work on narrow roads such as the one mentioned above, the transport vehicle must be placed in the adjacent lane, and the entire surface of the vehicle must be completely covered. The road will be closed.

The present invention has been made in view of these circumstances, and uses a structurally simple and inexpensive type that can make a half turn of 180 degrees to convert a transport vehicle into a body vehicle like a type that makes a full turn of 360 degrees. To provide an excavator with a conveyor which is improved so that a conveyor device is attached to a body vehicle so that loading can be arranged in series and the shovel of the backhoe device only needs to turn slightly.

For this purpose, according to the present invention, a conveyor device is installed on the side of the backhoe device in the longitudinal direction above the vehicle, and all or part of the conveyor device is made into a pantograph structure, so that it is placed on the side of the backhoe device during work. It is characterized by being configured so that it can be extended and then contracted and stored in the aircraft vehicle when being transported.

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings.

1 to 4 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. is a body vehicle, and a backhoe device 2 is provided at the rear end, and a dozer device 3 is provided at the 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, an outrigger 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 the outrigger 8.

Also, the backhoe device 2 is installed on either the left or right side of the rear lower part of the IJ gar 8, and the outrigger 8
By grounding the backhoe device 2, the load during operation of the backhoe device 2 is not applied to the body vehicle 1.

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.
Further, a shovel 15 is rotatably attached to the tip of the shovel via a link mechanism 14.

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.

The dozer device 3 has a dozer 21 attached to the end of an arm 20 having a hydraulic cylinder 19. The dozer 21 is moved into the soil by the action of the hydraulic cylinder 19 so as to scoop up the soil, thereby performing work such as digging and dozing. It is supposed to be done.

The present invention provides an excavator configured as described above, in which the backhoe device 2 is moved to one of the left and right sides of the outrigger 8.
On the other hand, a conveyor device 22 is installed above the body vehicle 1 in the front-rear direction.

This conveyor device 22 consists of a guide rail 23, and a telescoping conveyor 24 and a fixed conveyor 25 that are connected and placed in series on the guide rail 23.

The guide rail 23 is mounted obliquely upward in front of the vehicle, and extends so that the front end 23a slightly protrudes forward of the dozer 21 and the rear end 23b slightly protrudes rearward of the outrigger 8 at a large inclination angle. The front end 23a of the guide rail 23 is supported by a support 26 from the dozer 21, and the rear end 23b is fixedly supported by one leg 25 of the outrigger 8.

The guide rail 23 has a U-shaped cross section that opens inward, as shown in detail in FIG. The provided support member 27 and the support body 26
are installed parallel to each other.

The telescopic conveyor 24 has a pantograph structure in which a frame 28 can be extended and contracted in the longitudinal direction, and two connecting rods 2 are attached to a frame 28a that is erected on the front end 23a of the guide rail.
8b and 28c are attached in an X shape, and this connecting rod 28b
, 28c and two more connecting rods 28a, 28e.
are attached in an X-shape, and in the same way, multiple sets of connecting rods combined in an X-shape are sequentially connected, and the connecting rod 2
The intersection of 8b and 28c, 28d and 28e is axis 2
9, connecting rods 28c and 28d, 28b and 28
e are pivotally connected to shafts 30 and 31, respectively, and the connecting rods 28b to 28e are tilted to extend and contract by raising vertically.

A wheel 32 is attached to the lowermost shaft 31 whose height does not change during expansion and contraction.
The hydraulic cylinder 33 connects the connecting rods 28c and 2 between e.
Other connecting rods 28b and 28d are also provided so as to be raised and lowered at the same time as 8e.

As is clear from FIG. 5, this connecting rod mechanism is rotated so as to extend and contract in conjunction with the guide rail 23', and the extendable frame 28 constructed in this manner has a An endless belt 34 is provided along it.

As shown in FIG. 5, this endless belt 34 has an upper part 34'a on which earth and sand are loaded and conveyed, and an inner connecting rod 28c, 2
The support 35 is placed in a trough-like manner on a carrier roller 36 bridged to the upper part of the support 8e, and the lower part 34b is arranged to pass directly above the shaft 31.

The fixed conveyor 25 is framed in a box shape with a fixed frame 37, and wheels 38 mounted under the frame 37.
is fitted into the guide rail 23, 23' and connected to the rear end of the frame 28 of the telescopic conveyor 24 via the connecting member 39, so that it is arranged in series with the telescopic conveyor 24, and the telescopic conveyor 24 is It is designed to move according to expansion and contraction.

Further, the endless belt 34 is continuously stretched around the frame 37, and has a hopper 40 for charging earth and sand at the end opposite to the telescopic conveyor 24.

Furthermore, a drive roller 41 is provided at the tip end of the guide rails 23 and 23' to be driven by a hydraulic motor 42, and a driven roller 43 is provided at the rear end of the frame 37 of the fixed conveyor 25. 43, both ends of the endless belt 34 passing through the conveyor 24, 25 are wound.

Since the present invention is configured as described above, when the hydraulic cylinder 33 of the telescopic conveyor 24 is extended during excavation work to knock down the connecting rods 28b to 28e, the frame 28 is moved as shown in FIGS. 1 to 3. It is extended so that it is installed over a large area of the guide rail 23, 23' above the airframe vehicle 1.

As the telescopic conveyor 24 expands, the frame 3γ of the fixed conveyor 25 is moved to the rear of the vehicle, and is installed adjacent to the backhoe device 2 side from the rear end of the guide rail 23, 23'. , and the endless belt 34 becomes tense and passes through these conveyors 24, 25M, and becomes in a state where it is possible to convey earth and sand.

Therefore, the backhoe device 2 is directed toward the excavation site, the transport vehicle is arranged in series in front of the body vehicle 1, and the loading platform is placed on the conveyor device 2.
2, and then drives the conveyor device 22, operates the backhoe device 2, excavates with the shovel 15, and scoops up the earth and sand by rotating it just a little, for example, around 30 degrees. Then, they are dropped into a hopper 40 located adjacent to the backhoe device 2.

Then, the soil is placed on the endless belt 34, and as it moves, it passes through the frame 37 of the fixed conveyor 25 and the frame 28 of the telescopic conveyor 24, and is conveyed to the front of the body vehicle 1 on the opposite side from the backhoe device 2. The excavation work and the resulting loading of earth and sand onto the transport vehicle are carried out continuously.

Next, when the excavator is to be transported after the excavation work is completed, the telescopic conveyor 24 is moved by the contraction action of the hydraulic cylinder 33.
When the connecting rods 28b to 28e are raised vertically, the frame 28 is moved to the guide rail 23, 23' as shown in FIG.
The frame frame 28 at the front end of the frame 28 a is folded and contracted, and the frame 37 of the fixed conveyor 25 is accordingly pulled and moved forward of the body vehicle 1, and is stored without protruding into the body vehicle 1. will be done.

Also, at this time, the endless belt 34, which is disposed continuously on the conveyors 24 and 25, is free to bend and is folded into a bellows shape as appropriate due to its nature. The device 22 can be shortened to fit within the range of the body vehicle 1, and can be transported to other excavation sites while being mounted on the body vehicle 1.

By the way, it goes without saying that the backhoe device 2 and dozer device 3 can perform the same work as conventional ones, and the conveyor device 22
It is attached to the IJ gar 8 so that it can be raised and lowered, and with the entire conveyor device 22 slightly raised, there are support stands 44.
Guess 5.

After that, the support body 26 is removed from the dozer 21, and the guide rails 23, 23' are removed from the outrigger 8.
When the dozer 21 etc. are lowered, the conveyor device 22 moves to the support stand 44.
．． 45, and is separated from the conveyor device 22 by traveling on the body vehicle 1.

Therefore, the backhoe device 2 and the dozer device 3 can perform various operations in the same way as in the past, and the separated conveyor device 22 can also be used independently for conveyance operations.

It should be noted that the present invention is not limited to the above-mentioned embodiment, but can also be applied to a type in which the backhoe device 2 is located in front of the aircraft vehicle 1, and the support body 26 can be moved from the ground without using the dozer device 3. It may be grounded to

Furthermore, the conveyor device 22 can of course be attached to either the left or right side of the body vehicle 1, and the endless belt 34 may be wound up when the conveyor device 22 is contracted, or the entire conveyor device can be made into a telescopic conveyor. can.

As is clear from the above explanation, according to the present invention, even if the backhoe device 2 is attached to the end of the body vehicle 1 and is of the type that rotates 180 degrees and a half, the transport vehicle is arranged in series with the body vehicle 1 to load earth and sand. Therefore, it is possible to easily and inexpensively provide a device having the same functions as a full 360-degree rotation type.

In particular, since the excavator 15 of the backhoe device 2 only needs to turn and move a short distance, the cycle time is significantly shortened, work efficiency is improved, and nothing protrudes into adjacent lanes when working on narrow road construction sites. There is no need to stop vehicle traffic.

The conveyor device 22 is extendably attached to the body vehicle 1 and can travel while mounted on the body vehicle 1, making it very convenient to carry.

Since the conveyor is partially or entirely constructed of a pantograph-shaped telescopic conveyor, expansion and contraction can be performed smoothly.

Further, when the conveyor device 22 is separated, each can be used and operated separately, so that it has a very wide range of uses.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of an excavator with a conveyor according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of the same, FIG. 4 is a front view of the same, and FIG. FIG. 6 is a side view showing the conveyor device in a contracted state. 1... Airframe vehicle, 2... Backhoe device, 3... Dozer device, 22... Conveyor device, 23゜23'... Guide rail, 2
4...Telescopic conveyor, 25...Fixed conveyor, 26...Support, 28°37...
...Frame, 34...Endless belt, 39...
...Connecting member, 41... Drive roller, 42
...Hydraulic motor, 43...Followed roller.

Claims (1)

[Claims] 1. In an excavator equipped with a backhoe device at one rear end of a movable body vehicle, an elongated guide rail is installed above the vehicle body on the side opposite to the side where the backhoe is installed so that the backhoe device side faces downward. The guide rail is fixed at an angle, and a frame that can move in the length direction and extend downward from the guide rail is placed on the guide rail.
A pair of connecting rods are connected in an X-shape between the upper part of the guide rail and the upper part of the frame, and the entire length can be freely expanded and contracted by connecting multiple pairs of connecting rods in a rotatable manner at each end. A telescoping conveyor with a pantograph structure is interposed, rollers are pivotally supported at the upper end of the guide rail and the lower end of the frame, and an endless conveyor is wound between both rollers. During work, the telescoping conveyor is extended to move the frame to the aircraft body. It is characterized by being pulled out next to the backhoe device at the rear of the vehicle, and the earth and sand excavated by the backhoe device being conveyed to the front of the body vehicle by an endless conveyor, and when moving, the telescopic conveyor can be contracted and the frame can be stored inside the body vehicle. An excavator with a conveyor.