JPH0612014B2 - Pebbles machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravel removing machine for removing gravel in sediment to improve land containing gravel.

(Prior art) For example, in the case of improving a wasteland consisting of gravel-containing soil into an agricultural land such as an orchard or a ranch, or removing gravel from an agricultural land containing a large amount of gravel, conventionally, a relatively small scale was used. In the case of land improvement, a bucket equipped with a separating device such as a sieve is used in place of the excavating bucket of the hydraulic excavator. However, in order to improve vast land, Figs. 12 and 13 are used. The crusher shown in was used. This conventional debris removal machine 1
00 is a gravel removing device 103 including a hopper 102 for introducing sand on the traveling vehicle 101, a gravel unloading conveyor 104 for carrying the separated gravel forward, and a gravel unloading gravel for unloading gravel removed. It is equipped with a conveyor 105,
The gravel unloading carrier 106 is parked under the tip of the gravel unloading conveyor 104, and hydraulic excavators 107 are arranged on the left and right sides of the gravel unloading machine 100 in the opposite direction to the gravel unloading machine 100.
The rear part of 0 is excavated by the bucket 108, and the front 10
9 is turned as shown by an arrow a, earth and sand are introduced from the hopper 102, and the gravel 110 is the gravel unloading conveyor 104 in the front.
The gravel removed from the carrier 106 is carried to the rear by the unloading conveyor 105 and piled up backward as indicated by 111, and when the gravel is sufficiently mounted on the bed of the carrier 106, the dip car 106 is loaded. Run the gravel remover 1
00 is slightly advanced as indicated by an arrow b, and a new transport vehicle 106 is stopped at the tip of the conveyor 104 to perform the debris removal work as described above.

However, in the conventional debris removing machine 100, the height of the hopper 102 of the debris removing machine 100 is, for example, as high as 3.4 m, and the arrow ‘a’ is used to insert the excavated soil into the hopper 102 of this height. The turning operation, the operation of raising the bucket 108 to the above height, and the operation of rotating the bucket 108 to remove the soil are required, and it takes a long time to perform one excavation and the removal of soil by the bucket 108, resulting in a work efficiency. There was a problem that was bad.

In addition, as described above, since the efficiency of loading the sand by the hydraulic excavator is inefficient, in order to fully utilize the capacity of the debris removing machine 100, the hydraulic excavators 107 are arranged on both sides of the debris removing machine 100 as shown in the figure. Since it is necessary to perform gravel removal work using a total of three machines, three work machines and three operators are required for gravel separation work, and the number of work machines and the number of operators are large. There was a problem that was.

In addition, the ground compacted by the hydraulic excavator 107 is excavated and introduced into the hopper 102 (in the case where the conveyors 104 and 105 are vertically arranged as in the conventional structure, the transport vehicle 106 moves forward). The excavator 107 cannot be excavated forward due to the existence of the carrier 106.) Therefore, there is a problem that debris cannot be efficiently removed in the debris removal device 103.

Further, since the carriage 106 is configured to be parked in the front to perform the work, the work cannot be performed because the carriage 106 cannot run when the soil to be debris is muddy, such as on a rainy day. There was a problem that the operating rate was poor.

Further, since the debris removing machine 100 is fixed at one place until the loading platform of the horizontally mounted carrier 106 is filled with the gravel 110, the work is carried out at a normal gravel content of about 20 m at a time.
There is a problem that it is necessary to perform excavation work over a certain width, and it is not suitable for land with obstacles such as standing trees and utility poles, or for relatively narrow land.

(Problems to be Solved by the Invention) The present invention has been made in view of the above problems, and can improve efficiency of gravel removal work and gravel separation efficiency,
The mechanical structure is simplified, the number of machines and the number of operators can be reduced, work can be performed regardless of the weather, the operation rate of the machine can be improved, and work can be performed relatively smoothly even on narrow lands and lands with obstacles. The purpose of the present invention is to provide a debris removing machine that can be used by

(Means for Solving the Problems) In order to achieve this object, the debris removing machine of the present invention comprises a hydraulic excavator and a debris wheel towed by the hydraulic excavator. Is formed in a tall structure in which the spaces between the frames are opened in the front-rear direction, the rear portion of the center frame is extended rearward, and a debris wheel pulling connection portion is provided at the rear end of the center frame. A divergently-shaped guide blade for introducing sand and sand is installed rotatably in the vertical direction so that the front portion of the guide blade is immersed and levitated in the ground by a hydraulic cylinder, and the front end of the conveyor for carrying the earth and sand to the gravel removal vehicle. Is located near the rear of the guide blade, the upper belt of the conveyor is passed between the upper and lower frames of the center frame, the lower belt is passed through the lower surface of the center frame, and the rear of the conveyor is centered. The rear end of the conveyor is tilted along the inclined conveyor frame attached to the rear part of the frame so that the rear end of the conveyor is located above the front part of the debris car. A gravel removing device for separating gravel from exposed soil, a gravel unloading conveyor for unloading gravel to the side, and a gravel unloading to the side opposite to the gravel unloading conveyor. It is characterized in that it is equipped with a gravel unloading conveyor.

(Embodiment) FIG. 1 is a side view showing an entire embodiment of a debris removing machine according to the present invention. The debris removing machine according to the present invention comprises a hydraulic excavator 1 and a debris car 2 pulled by the excavator 1. Become. As shown in the side sectional view of FIG. 2 and the plan view of FIG. 3, the center frame 3 of the hydraulic excavator 1 has a lower frame with two front and rear lateral beams 4.
And two side beams 5 on the left and right sides are respectively welded to form a rectangular shape, and the lower portions of the vertical frames 6 are welded to the corners of the lower frame, respectively. An upper frame composed of the side beam 7 and three lateral beams 8 installed between them is integrally provided by welding each crossing point. A high-structure center frame 3 is configured.

The center frame 3 extends at both ends of the front and rear lateral beams 4 forming the lower frame, and the extending portions 4a are inserted into the rectangular through holes 10 provided in the side frame 9 so that the extending portions 4a and the side portions 4a and 4b Brackets 11 and 12 provided on the frame 9 respectively
Are connected to the side frame 9 in a detachable manner by connecting with the pin 13. Further, a swivel mounting base 14 having a cylindrical shape is welded to the upper frame so that the swivel 1
5 and the upper revolving superstructure 17 by the flange coupling 16,
It is detachably mounted on the mounting base 14.

A rearwardly extending portion 3A is provided at a rear portion of the center frame 3, and a debris wheel pulling connecting portion 18 is provided at a rear end thereof. In this embodiment, the extending portion 3A is formed separately from the center frame 3, and the brackets 19 and 20 provided at the abutting portions of the two are attached by connecting with the pin 21. The projecting portion 3A may be provided integrally with the center frame 3.

In the front part of the center frame 3, a splayed-in type guide blade 22 for introducing sand (in the present embodiment, the width W1 of the front end portion of the guide blade 22 is set to the lower traveling body 2 of the hydraulic excavator).
The width W3 is 3 or more. ) Is attached rotatably in the vertical direction by the following mechanism. That is, the brackets 24 and 24 in the form of parallel plates protruding forward are welded or bolted to the front end portions of the left and right frames 7 of the upper frame and the left and right frames 5 of the lower frame that form the center frame 3. A hydraulic cylinder 26 for rotating the guide blade 22 by rotatably penetrating a shaft 25 installed between the brackets 24 into a bearing portion provided on the rear lower portion 22b of the side plate 22a of the guide blade 22. Is connected to the base end of the bracket 25 by a pin 27, and the piston rod is connected to the guide blade 22.
The pin 28 on the protrusion 22c provided on the upper rear portion of the side plate 22a of the
When the hydraulic cylinder 26 is extended, the front end portion of the guide blade 22 is immersed into the ground by, for example, about 50 cm as shown by the solid line, and the guide blade 22 is retracted depending on the extension degree of the cylinder 26. It is possible to adjust the entry depth, and the hydraulic cylinder 26
By contracting, the front end portion of the guide blade 22 can be levitated above the ground, as indicated by the chain double-dashed line a in FIG.

Reference numeral 30 denotes a conveyor for carrying earth and sand to the gravel removal vehicle 2,
As shown in the figure, the conveyor 30 has chains 33 on the left and right sides and in the center, and as shown in FIGS. 4 and 5,
Every other link 34 of each chain 33 is made of metal plate 3
5 are fixed by bolts 36 and installed, and each plate member 3
In order to prevent earth and sand from leaking from between the five parts, a rubber plate 37 that closes the gap between the plate materials is attached to each plate material 35 with bolts 38.

Further, the inclined plates 39 are welded to the several plate members 35 at intervals of one. As shown in FIG. 1, the inclined plate 39 prevents the gravel from slipping off at the inclined conveyor frame 31 attached to the extending portion 3A of the center frame 3.

The front end of the conveyor 30 is located in the vicinity of the rear portion of the guide blade 22 so as to receive the sand from the guide blade 22. That is, in this example, the sprocket 40 for hooking the front end of the chain 33 is rotatably attached to the shaft 25 on which the guide blade 22 is pivotally mounted. As shown in FIG. 2, the conveyor 30 has its upper band slidably passed between the upper, lower, left and right frames of the center frame 3 so as to slide on the front and rear frames 4 of the lower frame, and the lower band of the center frame 3 The lower part of the conveyor 30 is passed through the lower surface and the rear part of the center frame is provided with an extension 3A.
The supporting chain 94, 95 and the connecting pin 96 at the front end are tilted so that the rear end is lifted up along the inclined conveyor frame 31 attached, and the chain 33 at the rear end of the conveyor 30 is rear end of the conveyor frame 31. Mounted on the sprocket 42 driven by the electric motor 41 attached to the sprocket 42, and the intermediate portion of the conveyor 30 is mounted on the inclined conveyor frame 31 or the center frame 3 as shown in FIG. The chain 33
By making contact with the roller 44, the passage path of the conveyor is regulated. The rear end of the conveyor 30, that is, the earth and sand falling portion is located above the front portion of the gravel removal vehicle 2.

The electric motor 41 uses a generator 80 mounted on the debris car 2 as a power source, and a controller 81 including switches for controlling on / off and forward / reverse rotation of the power source is attached to a driver's cab 82. The control signal line 84 (this line 84
Is attached to the center joint 85, the center frame 3, and the inclined conveyor frame 31, and is attached to the controller 81.
A line 86 connected to the. ) Is controlled via.

The debris wheel 2 has a front end connecting portion 76 having the connecting portion 18
, And is carried by the conveyor 30 onto the carcass 46 on which the wheels 45 are attached, as shown in FIGS. 1 and 6. The gravel removing device 47 for separating gravel from the sand, the gravel unloading and sand carrying conveyor 48 for unloading the gravel and debris to the side, and the gravel 51 on the side opposite to the gravel and sand carrying-out conveyor 48. It is equipped with a gravel unloading conveyor 49 that is unloaded on the loading platform of the carrier vehicle 52.

As shown in FIGS. 6 to 8, the debris removing device 47 is provided on a lower frame 54 supported on a vehicle body 46 via a spring 53, and on the lower frame 54 via a vibration mechanism described later. Upper frame 55 and sieve 56 provided by the structure described later
And a conveyor 72 for carrying the debris-removed earth and sand dropped from the sieve 56 onto the conveyor 48.

The lower frame 54 is composed of left and right side plates 54a and a lateral beam 54b that is integrally installed between both side plates, and the upper frame 55 is similarly installed integrally between the left and right side plates 55a and both side plates. It consists of a lateral beam 55b. The side plate 54a of the lower frame 54 and the side plate 55a of the upper frame 55 intersect a spring plate 57 and a plate member 58 having rigidity, and both ends of the spring plate 57 are fixed to the side plates 54a and 55a by welding or bolting. , The both ends of the plate member 58, except for one plate member 58A,
The U-shaped bracket 59 fixed to the side plates 54a and 55a is inserted through the soundproof rubber 60, and the lower frame 54 is supported by the spring 53.
Can move up and down with respect to the vehicle body 46, and the lower frame 54 and the upper frame 55 can relatively move up and down. The device for vertically moving the frames 54 and 55 relative to each other is an output pulley 62 of a motor 61 installed on the vehicle body 46 and a pulley fixed to an end of a rotary shaft 63 rotatably attached to the lower frame 54. A belt 65 is hung on 64, and a ring 67 fixed to the end of the plate member 58A is fitted to a disc 66 eccentrically fitted to the rotary shaft 63 so that the disc 66 can rotate. By rotating 61, the upper and lower frames 54 and 55 are relatively moved up and down.

As shown in FIGS. 7 to 10, the sieve 56 is attached to a mounting plate 68 standing on the horizontal beam 54b of the lower frame 54 by welding or the like via a bracket 69 with a space in the left-right direction. Sieve rod 56a and these rods 56a
Between a, the bracket 7 on the horizontal beam 55b of the upper frame 55
Sieve rod 5 fixedly arranged by welding or the like through 0
6b and the upper and lower frames 54, 55 move up and down relatively, so that the sieve rod 56 is moved as shown in FIG.
The a and 56b also vibrate vertically relative to each other between the solid line and the two-dot chain lines b and c (for example, the vibration width is set so that the maximum opening is 1.7 cm), whereby the rods 56a and 56b.
The earth and sand riding on b are ground, and the earth and sand adhering to the gravel is peeled off,
Since it is subdivided and the sieve 56 is inclined, the gravel rolls on the sieve 56 and falls on the gravel unloading conveyer 49 at the rear end, and the earth and sand fall from between the rods 56a and 56b to the bottom shown in FIG. The guide plate 78 attached to the frame 54 slides down to convey the conveyor 72.
It gets on the top and is conveyed to the earth and sand carrying conveyor 48.

In the present embodiment, the sieve rods 56a, 5
6b, which are adjacent to each other and have a space in the longitudinal direction.
Protrusions 71 projecting laterally are provided so as to face each other with respect to 6a and 56b, so that thin and long gravel does not fall from between the rods 56a and 56b.

Further, since the center frame 3 has a tall structure, the total height becomes high, and when transporting the trailer, the size becomes higher than the transport limit height when the size is large. Therefore, as shown in FIG. The abutting portions of the constituting vertical frame 88 and horizontal frame 87 are connected by a pin 89 to form a parallelogram, and at the time of work, a reinforcing frame 91 is attached to a corner portion by a pin 89 to hold a rectangle. , The door (not shown) and the transparent plate 90 are attached with bolts 93, the other parts are covered with a flexible cover 92, the cover 92, the transparent plate 90 and the reinforcing frame 91 are removed during transportation, and the two-dot chain line x As shown by, the vertical frame 88 is tilted so that the height of the vertical frame 88 is lowered so that the frame can be transported.

When carrying out debris work with this debris machine, as shown in FIG. 1, the boom 73 is raised and lowered, and the arm 74 and the bucket 75 are rotated to scrape up the earth and sand onto the guide blade 22. By this operation, in the guide blade 22, the earth and sand on the side closer to the conveyor 30 is pushed up by the earth and sand excavated and pushed up by the bucket 75 and rises along the guide blade 22. In this case, as shown in FIG. 3, the angle θ of the side plate 22a of the guide blade 22 with respect to the longitudinal centerline 1 of the hydraulic excavator is set so that the front of the hydraulic excavator boom 73, the arm 74, and the bucket 75 is set to the left or right. Since the angle of inclination of the front with respect to the center line 1 in the case of turning and excavating is equalized, the soil can be efficiently placed on the conveyor 30 by the guide blade 22 even in the case of turning and excavating the front left and right. it can.

The earth and sand placed on the conveyor 30 passes through the center frame 3 and rises up on the inclined portion. At this time, the conveyor 3
Since the inclined plate 39 is attached to 0, gravel and sand do not slide or fall on the conveyor 30, the inclination of the inclined portion can be increased, and the length of the conveyor 30 can be shortened. .

The earth and sand carried by the conveyor 30 drop onto the gravel removing device 47 from the rear end, and the rod 56a that constitutes the sieve 56,
By vibrating 56b up and down, lumps of earth and sand are ground and finely divided, and the earth and sand attached to the gravel are separated. Then, the debris removed is carried forward by the conveyor 72 and is carried to the side of the debris removal machine 2 through the debris carrying-out conveyor 48, as shown at 50 in FIG.
The piles are piled up, and the gravel falls on the gravel unloading conveyor 48 and is loaded on the carrier vehicle 52.

According to this machine, the work of introducing earth and sand onto the conveyor 30 can be done only by a scraping operation, and it is not necessary to raise the bucket 75 high, or the turning range is extremely small, and the boom 7
3, the movement of the arm 74 and the bucket 75 can be small.

Further, since the earth and sand to be removed is excavated by excavating the earth and sand in front of the hydraulic excavator 1, the earth and sand that have not been compacted by the hydraulic excavator are removed, and the efficiency of the removal of soil is good.

In addition, the conveyors 48, 49, 72 and the vibration-generating motor 61 of the debris truck 2 are always operated, and the motor 41 that operates the conveyor 30 is controlled by the operator of the hydraulic excavator 1 using the operation unit 83. The debris removal work can be performed by one operator.

Further, when the carrier cannot enter the land to be improved due to rain or the like, the gravel 51 and the earth and sand 50 are piled on both sides of the gravel car 2 to remove the gravel when the swelling disappears. Two
Then, the gravel accumulated on the ground can be removed by loading the gravel on the ground from the conveyor 30 using the hydraulic excavator 1.

In addition, it is possible to perform debris removal work for almost the width of the hydraulic excavator 1 without disposing hydraulic excavators on both sides.

The present invention has been described above with reference to the embodiments, but in the case of carrying out the present invention, a specific structure or combination of the guide blade 22, the center frame 3, the conveyor 30, the debris device 47 mounted on the debris car 2, and the like. For example, various changes and additions can be made without departing from the gist of the present invention. For example, modifications can be made such that the inclination angle of the rear inclined portion of the conveyor 30 can be adjusted.

(Effects of the Invention) As described above, according to the present invention, the work of introducing earth and sand only requires a scraping operation with a bucket, and since it is not necessary to raise the bucket high, the turning range is extremely small and the boom The movements of the arm and bucket are small, and the time required for one scraping operation is about one-fourth that of the conventional method, so it is possible to efficiently load soil into the debris removal device. .

Further, since the earth and sand to be debris is excavated by excavating the earth and sand in front of the hydraulic excavator, the debris that has not been compacted by the hydraulic excavator is removed, and the debris efficiency is good.

Further, according to the present invention, since loading of the earth and sand by the hydraulic excavator onto the conveyor can be efficiently performed, the debris removing device can be fully operated by loading with one hydraulic excavator, and the number of machines is small. Moreover, only the operator of the hydraulic excavator needs to be used, which enables resource saving and labor saving.

In addition, since the soil and gravel can be loaded separately on both sides, gravel removal work can be performed even when the land is muddy due to rain, etc., and after the weather has recovered so that the transport vehicle can run, Since the gravel can be loaded from the hydraulic excavator to the carrier with the gravel removal vehicle removed, the operating rate of the machine can be improved.

Further, since it is possible to perform debris removal work of almost the width of the hydraulic excavator without arranging hydraulic excavators on both sides, it is possible to perform work in places with obstacles such as standing trees and utility poles, or in narrow land.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a debris removing machine according to the present invention,
2 is a partially enlarged side view of the embodiment, FIG. 3 is a plan view showing a portion below the center frame of FIG. 2, and FIG. 4 is a side view showing a part of the conveyor of the embodiment. 5 is a perspective view showing a part of the conveyor, FIG. 6 is a rear view of the debris removal vehicle of the embodiment, FIG. 7 is an enlarged side view of the debris removing apparatus of the embodiment, and FIG. A front view of the gravel apparatus, FIG. 9 is a plan view of a sieve used in the embodiment, FIG. 10 is a front view of the sieve, FIG. 11 is a side view showing a cab of the embodiment, and FIG. FIG. 13 is a side view of a conventional debris removing machine, and FIG. 13 is a plan view showing its working state.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukihiro Seki 1-530 Kotoni Shijo, Nishi-ku, Sapporo, Hokkaido Hitachi Construction Machinery Co., Ltd. Sapporo Service Factory (56) References Sho 60-27169 (JP, Y2)

Claims (1)

[Claims] 1. A center frame of the hydraulic excavator, which comprises a hydraulic excavator and a debris wheel pulled by the hydraulic excavator, is formed in a tall structure in which the upper, lower, left, and right frames are opened in the front-rear direction, and the center frame is provided. The rear part is extended rearward to provide a debris wheel pulling connection part at the rear end, and the front part of the center frame is provided with a guide blade for spreading sand and sand, and the front part of the guide blade is a hydraulic cylinder. It is attached rotatably in the vertical direction so that it can be immersed and floated in the ground, the front end of the conveyor that carries earth and sand to the gravel removal vehicle is located near the rear part of the guide blade, and the upper band of the conveyor is the center frame. Between the upper and lower frames, pass the lower strip on the lower surface of the center frame, and hold the rear end of the conveyor along the inclined conveyor frame attached to the rear part of the center frame. Want is inclined so as, to position the said conveyor rear end above the front part of the dividing gravel wheel, the said dividing gravel wheel,
A gravel removal device for separating gravel from the soil carried by the conveyor, a gravel gravel unloading conveyor for unloading gravel debris to the side, and gravel on the opposite side of the gravel gravel unloading conveyor. A gravel removing machine equipped with a gravel unloading conveyor that is carried out to the side.