JP2002305906A - Gravel removing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gravel removing machine of a constitution in which the car body balance can easily be kept. SOLUTION: This gravel removing machine is equipped with a gravel removing and transporting device 5 having a drilling part at the tip in front of a self-propelled type vehicle. Conveyors 9 and 11 for transporting gravels transported with the gravel removing and transporting device 5 are loaded onto the central part of a body frame 4 of the self-propelled type vehicle. Hydraulic power units 13a and 13b are arranged in the left and the right on the body frame 4 which is installed on a truck frame of the self-propelled type vehicle so as to be freely shakable in the left and the right, and a driving device for shaking the body frame 4 relatively to the truck frame is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravel removing machine for removing gravel mixed in soil such as agricultural land.

[0002]

2. Description of the Related Art In farmland that contains gravel in the ground and that freezes in winter or that has a severe outflow of earth and sand, it is necessary to remove surface gravel every few years. Various devices for removing such gravel have been proposed. For example, 61-6
In Japanese Patent No. 2966, a self-propelled vehicle is equipped with a debris transfer device at the front, a gravel sorting device made of a rotating wire mesh at the center, and a hydraulic power unit at the rear.

[0003]

In the above-mentioned conventional degraving machine, one hydraulic power unit is provided, and in order to balance the weight of the vehicle body, an engine, a hydraulic pump,
It is necessary to appropriately dispose the oil tank and the like with the drive shaft directed to the left and right while taking these weights into consideration, and since the number of one hydraulic pump is limited by the device configuration, the arrangement of the hydraulic power unit is There was a problem that it was difficult.

[0004] In addition, in the case of performing debris in a row by running the debris excavator, the crawler on one side of the excavator travels on the raised portion after the debris, the vehicle body tilts, and the vehicle body balance is reduced. There is a problem that the driving is not easy because the driver's cab is inclined with the deterioration.

[0005] In view of the above problems, an object of the present invention is to provide a debris excavator having a structure that can easily balance a vehicle body.

[0006]

According to a first aspect of the present invention, there is provided a debris excavator having a debris transfer device having a digging portion at a front end of a self-propelled vehicle, and a center of a main body frame of the self-propelled vehicle. A conveyer for conveying the gravel conveyed by the debris conveying device is mounted on the main body frame, and hydraulic power units each having an engine are arranged on the left and right sides of the main body frame.

As described above, if the conveyor is arranged at the center of the main body frame and the hydraulic power units are arranged on both sides of the main body frame, the left and right hydraulic power units have substantially the same weight, so that the weight of the right and left vehicle bodies can be reduced. It can be easily balanced. In addition, since two engines are provided, the overall output can be increased, and a debris excavator having large excavation and debris capabilities can be provided. The number of hydraulic pumps that can be driven by one engine is limited. However, by providing two engines, the number of hydraulic pumps can be increased. The number of hydraulic cylinders (actuators) can be doubled, and the number of simultaneously operable actuators can be doubled, so that an easy-to-operate debris machine can be provided.

According to a second aspect of the present invention, there is provided a debris transfer device having a digging part at a front end of a body frame on which a hydraulic power unit and a driver's cab of a self-propelled vehicle are mounted. Equipped with a conveyor for transporting the gravel transported by the debris transport device, the main body frame,
A drive device is provided on the track frame of the self-propelled vehicle so as to be swingable right and left and swings the body frame with respect to the track frame.

[0009] When debris is performed in a row while self-propelled using this degraving machine, the crawler or wheel on one side of the degraving machine runs on the raised portion after the degraving. By driving the frame swing driving device to correct the inclination of the main body frame, it is possible to balance the left and right vehicle bodies. In addition, by correcting the attitude of the body frame, the driver's cab is also horizontal, which facilitates operation and also keeps the excavated part horizontal, and excavates and debris at a certain depth within the excavation width range. It can be performed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing an embodiment of a degraving machine according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a front view showing a main body. 1 is a crawler type traveling body,
The traveling body 1 has a crawler 1b attached to the left and right sides of a track frame 1a. In some cases, a wheeled traveling body is used as the traveling body 1.

As shown in FIG. 3, a main body frame 4 is mounted on the track frame 1a so as to be swingable right and left by two rolling hydraulic cylinders 3 on the left and right with the front and rear pins 2 at the center. The body frame 4
In front of the gravels, a debris transfer device 5 is mounted
Is mounted so as to be able to swing up and down by a hydraulic cylinder 7 around the center.

As described above, the main body frame 4 is made swingable right and left because the crawler 1b always keeps the debris conveying device 5 horizontally even when one crawler 1b runs on the raised ground after the debris. The digging portion 5a at the tip is always horizontal, the digging of the ground can be performed at the same depth over the entire width, and the cab 8 mounted on one or both front sides of the main body frame 4 is also kept horizontal. This is to make it easier for the operator to drive.

At the center of the main frame 4, a first conveyor 9 (9a is a hydraulic motor for driving the first conveyor) which is inclined so as to carry gravel carried from the debris transporting device 5 backward is mounted. Is done.

Further, a second conveyor 11 (11c)
Is mounted with its driving hydraulic motor). The second conveyor 11 has a horizontal portion 11a for receiving gravel falling from the rear end of the first conveyor 9 and an inclined portion 11b connected thereto.
Consists of

The reason why the second conveyor 11 is made rotatable is that, as shown by a two-dot chain line in FIG. This is for projecting the upper end of the second conveyor 11 onto the bed of a truck (not shown) to be transported to the right or left side of the second conveyor 11.

As shown in FIG. 1, the inclined portion 11b is provided with a folding hydraulic cylinder 12 to reduce the height during transportation.
Is configured to be foldable forward.

On the main body frame 4, a debris transfer device 5, a first conveyor 9, and a second conveyor 11 are installed at the center.
Hydraulic power units 13a, 13
b. That is, the debris transfer device 5, the first conveyor 9, and the second conveyor 11 are arranged in the center, and the hydraulic power units 13a, 13b are arranged separately on the left and right on the main body frame 4.

As can be seen from FIG. 2, the width W1 of the excavated portion 5a of the debris transfer device 5 is made smaller than the vehicle width W2 (preferably (1/3) W2≤W1≤ (2/3) W2 It is configured so that a large excavating force can be obtained.

FIG. 4 is a side view of the debris transfer device 5, FIG. 5 is a plan view thereof, and FIG. 6 is a sectional view thereof. The debris transport device 5 has a large number of interlocking rotating debris rods 15 arranged in the front-rear direction on a frame 14 having a lower surface opening, and a front excavation part 5a is formed in a tapered hoe shape.

As shown in FIG. 6, a debris rod 15 of the present embodiment has a shaft (a round shaft in this example) 16
A hole is formed in the outer surface of the device, and a number of pins 17 are implanted in the hole. A gear 18 is fixed to the end of each shaft 16, and as shown in FIG. 7, a relay gear 19 is interposed between the adjacent gears 18, 18 so as to mesh with both.

As shown in FIGS. 4 and 5, two hydraulic motors 20, 21 are mounted on the side of the frame 14.
The hydraulic motor 20 drives the region shown in FIG. 5A, that is, the front hydraulic motor that drives the front set of debris rods 15, and the hydraulic motor 21 drives the rear set of debris rods 15 shown in B and C. . That is, the gravel rod of the previous group A (10 in this example)
In the present invention, the relay gear 19 is connected to the gear 18 at the shaft end,
As shown in FIG. 7, the gear 18 is interposed between the gears 18 and driven by the front hydraulic motor 20 during degraving work (running in the direction of arrow Xa). ) To move earth and sand and gravel backwards by rotating them at the same speed in a series of directions. Further, the debris rods 15 of the rear sets B and C are also successively rotated at the same speed by the rear hydraulic motor 21. 69, 70
Are rotational speed detectors for the debris rods 15 of the front set A, the rear set B, and the rear set B, respectively, and these detected speeds are displayed on display means (not shown) of the cab 8.

In the debris rod 15 of the front group A, pins 17 are spirally disposed so that the earth and sand are shifted from the outside to the inside (center side), whereby the side plate 2 provided on the frame 14 is provided.
2 to reduce the friction required for debris.

In the rear group B of the rear group (in this example, composed of eleven debris rods 15), the pins 17 are spirally moved so that the earth and sand move from the inside (center side) to the outside. It is arranged so that the area for performing the rubble action is evenly distributed over the entire area and the rubble removal efficiency is increased.

The pin 17 in the rear area C of the rear group (in the present example, the pin 17 consists of twelve debris rods 15) has a pin 17 in a spiral shape so that the earth and sand can move from the outside to the inside (center side). , So that the earth and sand on the debris rod 15 can be put on the first conveyor 9 without spilling.

As shown in FIGS. 4 and 6, the frame 1
An auxiliary transport device (feeder) 40 is attached to the upper part of the device 4. The auxiliary transport device 40 includes a driving rotator 42 such as a driving sprocket or roller on the left and right that is rotated by a motor 41, and a driven rotator 43 such as a driven sprocket or roller on the front and left. And a rubber plate 45, which is a member for feeding gravel, attached to the endless rotating band 44.

In FIG. 4, reference numeral 47 denotes a debris transport device 5 for loosening excavated soil when the soil has a high viscosity.
It is a scraping device to send to the top. Transport device 4 of the present embodiment
Reference numeral 7 denotes a vertically moving frame 49, a rotary blade 50 for scraping attached to a front portion of the vertical frame 49, a rotating blade 51 for scraping earth and sand attached to a rear portion of the vertical frame 49, and A driving device including a hydraulic motor 52 for rotating the blades 50 and 51, sprockets 53, 54 and 55, and chains 56 and 57, and a frame 14 for adjusting the vertical position of the vertical frame 49.
Hydraulic cylinder 59 and X-shaped link 60 mounted on
Consists of

The excavating portion 5a is attached to the front portion of the frame 14 so as to be rotatable around a pin 61.
And a bracket 62 on the lower surface of the frame 14, are connected by a pin 63, a cushioning rubber 64, a hydraulic exciter 65, a rod 66, and a pin 67. , The excavating portion 5a moves back and forth.

FIG. 8 shows the hydraulic power units 13a,
FIG. 4 is a hydraulic circuit diagram showing a connection relationship between 3b and each of the actuators. Each hydraulic power unit 13a (13b)
Is an engine E1 (E2) and two main hydraulic pumps MP1, MP2 (MP3, MP2) driven by each engine.
4), a pilot hydraulic pump PP1 (PP2) for outputting operation signal pressure oil for each actuator, an auxiliary hydraulic pump RP1 (RP2), and an oil tank (not shown). In the hydraulic cylinder and the hydraulic motor, the same reference numerals as described above are as described above. 1c is a traveling hydraulic motor, 10a is a turning hydraulic motor of the turning device 10 of the second conveyor 11, and 65a is a hydraulic motor of the vibrator. As shown in FIG. 1, a hydraulic cylinder 75a is used to loosen the ground compacted by the crawler 1b of the traveling body 1 so that the Reiki 75 dragged at the rear of the degraving machine is brought into a landing state or pulled up from the ground. It is. Reiki is mounted on both left and right sides, 75a is a left hydraulic cylinder, and 76a is a hydraulic cylinder for raising the right reiki. CV1
CV16 indicates a control valve corresponding to each actuator, and FD1 to FD3 indicate shunts.

In this degraving machine, in the operator's cab 8,
The operator shrinks the hydraulic cylinder 7 and lowers the debris transport device, drives the traveling motor of the traveling body 1 to travel the degraving machine, and operates the hydraulic motors 20, 21 and 4 of the debris transport device 5.
While operating the first conveyor 52 and the second conveyor 11 while operating the first and second exciters 65 and the first conveyor 9 and the second conveyor 11, as shown in FIG. Excavation and debris are performed while the excavation portion 5a is vibrated by the vibration exciter 65 by the driving force. The rubble is removed by dropping the earth and sand from between the rubble rods 15 and sending only the rubble backwards with the pins 17.

In the present invention, since the conveyors 9 and 11 are arranged at the center of the main body frame 4 and the hydraulic power units 13a and 13b are arranged on both sides of the main body frame 4, the left and right hydraulic power units 13a and 13b are arranged.
Are made substantially the same, the weight of the left and right vehicle bodies can be easily balanced. Further, since the two engines E1 and E2 are provided, the overall output can be increased, and a debris excavator having a large excavation and debris removal ability can be provided. The number of hydraulic pumps that can be driven by one engine is limited, but two
1. By providing E2, the number of hydraulic pumps can be increased, whereby the number of hydraulic motors and hydraulic cylinders (actuators) that can be driven independently can be doubled, and the number of actuators that can be operated simultaneously can be doubled. Therefore, it is possible to provide an easy-to-operate debris machine. Also, various functions can be added as options.

In the case of performing debris in a row while self-propelled using this degraving machine, the crawler 1b on one side of the degraving machine has a raised portion after the degraving (the ground after the degraving is an average). 3
3), the vehicle body is balanced by correcting the posture of the main body frame 4 horizontally by the expansion and contraction of the left and right hydraulic cylinders 3 as shown by the two-dot chain line in FIG. Can be. Also, by correcting the posture of the main body frame 4, the cab 8 becomes horizontal, so that the driving becomes easy, and at the same time, the digging portion 5a can be kept horizontal, and digging at a certain depth in the digging width range. , Debris can be done.

When the present invention is carried out,
As disclosed in Japanese Patent Publication No. 0-184802, the rubble transfer device 5 has a structure that can be bent between the front set A and the rear sets B and C, or has a large number of square holes and projections on the outer periphery. A rubble rod having another structure, such as a rubble rod formed by fitting a gravitational plate to a square shaft, may be used. Also, the hydraulic power units 13a, 13b
Can be applied to a structure in which the body frame 4 is fixed on the track frame 1a, and the debris transfer device 5 is attached to the track frame 1a so as to be able to swing left and right.

[0033]

According to the first aspect, the conveyor is arranged at the center of the main body frame, and the hydraulic power units are arranged on both sides of the main body frame. The left and right body weights can be easily balanced. In addition, since two engines are provided, the overall output can be increased, and a debris excavator having large excavation and debris capabilities can be provided. The number of hydraulic pumps that can be driven by one engine is limited. However, by providing two engines, the number of hydraulic pumps can be increased. The number of hydraulic cylinders (actuators) can be doubled, and the number of simultaneously operable actuators can be doubled, so that an easy-to-operate debris machine can be provided. Also, it becomes easy to add optional functions.

According to the second aspect, the main body frame is mounted on the track frame of the self-propelled vehicle so as to be swingable left and right, and a driving device for swinging the main body frame with respect to the track frame is provided. Therefore, when performing debris in a row while running the excavator on its own, the crawler or wheels on one side of the excavator will travel on the raised part after the excavation, but the body frame will swing. The vehicle body can be balanced by driving the drive unit for driving to correct the inclination of the main body frame. In addition, by correcting the attitude of the body frame, the driver's cab is also horizontal, which facilitates operation and also keeps the excavated part horizontal, and excavates and debris at a certain depth within the excavation width range. It can be performed.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a degraving machine according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view of a main body of FIG. 1;

FIG. 4 is a side view of the debris transfer device of the present embodiment.

5 is a plan view showing a rubble rod arrangement section of the rubble transport device of FIG. 4;

FIG. 6 is a cross-sectional view of the debris transfer device of FIG.

FIG. 7 is a side view showing an interlocking device of a debris rod of the debris transfer device of FIG. 4;

FIG. 8 is a hydraulic circuit diagram of the degraving machine of the present embodiment.

[Explanation of symbols]

1: running body, 1a: track frame, 1b: crawler, 1c: hydraulic motor, 2: pin, 3: hydraulic cylinder,
4: body frame, 5: debris transport device, 5a: excavation section,
6: pin, 7: hydraulic cylinder, 8: operator's cab, 9: first conveyor, 9a: hydraulic motor, 10: turning device, 10
a: hydraulic motor, 11: second conveyor, 11c: hydraulic motor, 12: hydraulic cylinder, 13a, 13b: hydraulic power unit, 14: frame, 15: debris rod, 1
6: shaft, 17: pin, 18: gear, 19: relay gear, 20: front hydraulic motor, 21: rear hydraulic motor, 2
2: side plate, 40: auxiliary transfer device, 41: hydraulic motor, 4
2: drive rotating body, 43: driven rotating body, 44: infinite rotating belt, 45: rubber plate, 47: scraping device, 49: vertical moving frame, 50: rotating blade for scraping, 51: rotary blade for scraping earth and sand, 52: hydraulic motor, 53 to 55: sprocket, 56, 57: chain, 59: hydraulic cylinder, 6
0: X-link, 61: pin, 62: bracket, 6
3: pin, 64: rubber for cushioning, 65: hydraulic exciter, 6
6: rod, 67: pin, 75: reiki, 75a, 76
a: Hydraulic cylinder, CV1 to CV16: Control valve, FD1 to FD3: Divider

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koichi Otsuka 650, Kandachi-cho, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Yokoyama Loader Co., Ltd. F-term (reference) 2B034 AA06 BA06 BC06 BD02 BE05 GA01 GB04

Claims (2)

[Claims] A self-propelled vehicle is provided with a debris transfer device having a digging portion at a front end thereof, and a gravel conveyed by the debris transfer device at a central portion of a main body frame of the self-propelled vehicle. A degraving machine equipped with a conveyor for transporting hydraulic power units, and a hydraulic power unit having an engine disposed on each of the left and right sides of the main body frame. 2. A debris transfer device having an excavation portion at a tip thereof is attached to a front portion of a main body frame on which a hydraulic power unit and a driver's cab of a self-propelled vehicle are mounted, and is conveyed to the main body frame by the debris transfer device. A driving device mounted with a conveyor for transporting the gravel to be produced, the main body frame being mounted on the track frame of the self-propelled vehicle so as to be able to swing left and right, and the main body frame being swingable with respect to the truck frame Debris machine characterized by having a.