JP2000291049A - Cutting depth adjusting apparatus in scrape-up machine for polluted sand or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately scrape up polluted sand or the like with a predetermined layer thickness by supporting fairly well the self-weight of a scrape-up machine and performing the adjustment of cutting depth with a cutting plate easily and adequately. SOLUTION: In a scrape-up machine having a rake-up device 2a installed to a traveling machine body, the rake-up device 2a has a spiral rake-up body 61 supported by a shaft in a cover body 21 having an opening 21c at the bottom, which scrape up polluted sand or he like from the ground surface and transfers it sideward. At the rear portion of the cover body 21, a scraper 13 with the blade edge positioned close to the track of rotation of the rake-up body 61 is provided, and right and left sledge bodies 70 are provided downward of the front portion of the cover body 21 in a lift-adjustable manner. This functions as a cutting depth adjusting device for the scrape-up machine for polluted sand or the like and is provided so as to overlap the rear end portion of the sledge body with the track of rotation of the rake-up body 61 in a plan view.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for shaving soil with a predetermined thickness, such as a slow filtration pond used for filtration of waterworks, with a predetermined thickness, and scraping the shaved sand to the side. The present invention relates to a scraping depth adjusting device for a scraper to be collected after being brought.

[0002]

2. Description of the Related Art Conventionally, as a device for collecting dirty sand and the like in the above-mentioned filtration basin and the like, there is known a device for scraping and discharging dirty sand and the like as disclosed in Japanese Patent Application Laid-Open No. 10-195918.

[0003]

This scraping-out device comprises a scraping machine for scraping the surface of a filtration pond with a scraping device, and a scraping device for scraping up the dirt sand scraped by the scraping device. And a raking machine to be fed into the container of the unloader. Therefore, when the scraping device is integrally formed with the scraping device, the scraping and scraping of the sand can be performed with a single scraping machine in a labor-saving manner. The width of the scraping device of the scraping device used is increased.

[0004] The scraper in which the scraping device and the scraping device are integrally formed as described above is a device in which the wide scraping device is rolled and moved up and down with respect to the traveling machine to scrape. Since the amount of shaved sand is adjusted during work, the scraping device cannot properly and quickly follow the inclination or unevenness due to the undulation of the ground surface, and the shaved amount is finely adjusted. Is difficult, and when the aircraft is running on a soft ground with inclination, the scraping device is inclined to one side and deviates too much, and too much or too much sand remains due to shallow cutting. And there are drawbacks such as the inability to accurately and satisfactorily remove dirty sand and the like. In addition, an actuator such as a hydraulic cylinder having a large and large lift is required to vertically move the long scraping and conveying device, and there is a problem that the elevating mechanism is complicated and the cost is increased.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, a device for adjusting the shaving depth of a scraping machine for contaminated sand or the like according to the present invention comprises: The scraping device 2a mounted on the upper surface of the scraper 2a is formed by a spiral in which the soil sand W or the like on the ground surface is transferred to the side in a cover body 21 having an opening 21c at a lower portion. A scraper 13 having a blade edge close to the rotation locus of the scraper 61 at the rear of the cover 21.
And a sled 70 under the front of the cover 21.
Is provided so as to be adjustable up and down.

[0006] Second, in the raking machine 2 in which the scraping device 2a is mounted on the traveling machine body 20, the scraping device 2a is constructed by placing a cover 21 having an opening 21c in the lower part. A scraper 13 in which a spiral scraping body 61 for transferring laterally while shaving off soil sand W or the like on the ground is supported by a shaft, and a cutting edge is provided at a rear portion of the cover body 21 so as to be close to a rotation locus of the scraping body 61.
And right and left sled bodies 70 are provided below the front part of the cover body 21 so as to be able to move up and down, and the rear ends of the sled bodies 70 are provided so as to overlap the rotation locus of the scraping body 61 in plan view. It is characterized by that.

Third, the sled body 70 is rotatably supported by a support rod 72 suspended from the cover body 21 and is supported via a biasing support mechanism 7b for biasing downward. And

Fourth, the scraping device 2a is supported on the traveling body 20 so as to be rotatable in a rolling manner.

Fifth, the left and right sleds 70 are provided so as to be able to be raised and lowered simultaneously, and the left and right sleds 70 are separately provided so as to be able to be raised and lowered.

[0010]

An embodiment of the present invention will be described with reference to the drawings. K shown in FIG. 1 is a filtration pond for slow filtration used for filtration of waterworks, and this filtration pond K is shown in FIG.
As shown in (A), the inside is surrounded by a concrete peripheral wall K1 and is constructed by laminating a coarse gravel layer on a lower layer and a fine sand layer on an upper layer by a conventional filtration method. In addition, the filter pond K removes a soil layer formed on the surface layer due to long-term water purification treatment by a scraping-out means described in detail below to remove the surface soil sand (hereinafter referred to as “soil sand”) W to a predetermined thickness. (About 10 to 30 mm), and is carried out to a carry-out device K2, such as a carry-out conveyor, installed at an appropriate place of the filter pond K. Thereby, the contaminated sand W is carried out of the filter pond K, and the filter pond K is removed. By temporarily carrying out and accumulating the water at the appropriate storage location K3, the soil layer of the filter pond K is removed, a new surface layer is exposed, and the water purification treatment is continued satisfactorily.

Conventionally, as shown in FIG. 1B, the scraping and discharging means used for the filtration pond K is a scraping device 1a for scraping soil sand W on the ground surface to a predetermined thickness to form a scraping strip. A self-propelled scraping machine 1 to be described later, which forms a predetermined width of W1 on a scraping site W2, and a scraping transport device 2
c, a self-propelled scraping machine 2 that conveys and discharges upward and rearward, and an unloading machine 3 that receives and stores the dirt W discharged from the scraping machine 2 in a container 31. The scraping machine 2 according to the present invention includes a scraping machine 1 for forming a scraping strip W1 and a scraping strip W1 for forming the scraping strip W1.
The above-mentioned work can be simultaneously performed by one scraping machine 2 without separately configuring the scraping machine 2 for scraping 1 as a work machine capable of independently running. .

First, the configuration of the scraper 2 will be described with reference to FIGS. The scraping machine 2 is a scraping machine that scrapes soiled sand W from both sides while scraping the sand S to a predetermined depth on a machine base (running machine body) 20 having a crawler-type traveling device 20a. A scraping transport device 2c composed of a device 2a and a transporting body 2b that inherits the contaminated sand W picked up by the scraping device 2a and transports it upward and rearward of the scraping machine 2 is connected to a support mechanism 5 described later. A midway in the front-rear direction of the transfer frame 2F is supported on a drive shaft 50 provided horizontally on the upper side of the vehicle, and the front and rear sides of the transport frame 2F are supported in a forwardly inclined posture with a low height and a rearwardly tiltable posture. Is disposed in a space widely formed behind the support mechanism 5 and below the carrier 2b.

This makes it possible for the scraping and conveying device 2c to be turned up and down satisfactorily with a small lift around the middle of the device.
The support mechanism 5 and the engine 2E are configured to be compactly installed below and behind the scraping and conveying device 2c. In addition, in this embodiment, the operating unit 5a having the operating lever for traveling the machine body, the elevating lever or the like for performing the elevating operation of the scraping and conveying device 2c, and the seat is shifted from the machine base 20 to the right side of the conveying body 2b in this embodiment. Is installed.

As shown in FIGS. 3 to 5, the scraping device 2a is provided within a cover body 21 having a width wider than the right and left width of the traveling device 20a and having an opening 21c formed at a lower portion. With a configuration similar to that described above, the rotating shaft 6 is rotatively driven so as to be rotatable, and a plurality of raking blades 60 are protruded in the center of the rotating shaft 6 in the radial direction. (Scraper) 61 is provided, and a scraper 1 having a cutting edge approaching the rotation locus of the spiral body 61 is provided at a lower rear portion thereof.
3 is provided so as to be able to scrape off dirt at a predetermined depth along the surface of the ground over the entire width of the spiral body 61, and the spiral sand 61 scraped by the scraper 13 is scraped toward the center by the spiral bodies 61 on both sides. The scraped sand W that has been raked can be successively picked up and discharged onto the rear transporting body 2b by the scraping body 60a.

The cover body 21 has a discharge port 21a formed by cutting out the rear portion of the scraping body 60a to lift and discharge the dirty sand W to the rear. The discharge port 21a surrounds the periphery. A guide cover 21b is provided, and the rear end of the opening is located at the upper center of the front end of the transport body 2b. Thus, the sand W that is scraped off and discharged from the filtration pond K by the scraping device 2a can be smoothly transferred to the carrier 2b while preventing leakage or the like. At this time, the scraper 13 has its cutting edge provided in the vicinity of the rotation locus of the spiral body 61, and even if the ground after being scraped off by the spiral body 61 has unevenness, the scraper 13 flattens this. The scraped sand W is scraped toward the center by the spiral body 61 and supplied from the discharge port 21a onto the carrier 2b.
The scraper 13 is detachably attached to the cover body 21 below the guide cover 21b by an attachment screw 13a, thereby facilitating maintenance work such as grinding and replacement of the cutting edge.

The scraping device 2a includes a cover 2
Each of the support shafts protruding from both sides of the transfer frame 2F of the transfer body 2b is connected and pivoted by a support rod 22, and a raking device frame 2H provided at the center of the cover body 21 and a transfer frame 2H.
A three-point link mechanism 22b is configured and supported by connecting a support shaft provided above the front central portion of F with a support rod 22a. With this configuration, the scraping device 2a is stably supported rotatably by the three-point link mechanism 22b with respect to the transporting body 2b, and the scraping device 2a is connected to the left and right sled bodies 70 of the shaving depth adjusting device 7 described later. When the grounding is performed and the vehicle is slid, the scraping device 2a can be movably supported singly and swingably in the left, right, up, down, and combined directions along the undulation, inclination, or unevenness of the surface of the filtration ground K, This makes it possible to scrape the soil sand W etc. on the ground surface while shaving it with good precision.

Further, the scraping device 2a includes a cover 21
Are connected via an elevating rod 2R of an elevating mechanism 2S having a conventional configuration provided on the machine base 20 side.
The scraping device 2a supported by the point link mechanism 22b
As shown in FIG. 2, only the scraping device 2a has a predetermined angle θ.
Raising and lowering that is independently raised and lowered in the range of
In this configuration, both the a and the transporting body 2b can be moved up and down largely at the rear of the drive shaft 50 so as to be able to switch and rotate.

On the other hand, the transporting body 2b supports a floating roller 23a and a driving roller 23 at the front and rear ends of the transport frames 2F, 2F arranged side by side in the front-rear direction with a transport interval.
A transport belt 2V made of a flexible rubber or plastic material is wound around the
An appropriate number of guide rollers (not shown) installed at predetermined intervals in the front-rear direction between F and 2F guide the rolling back of the transport-side back surface of the transport belt 2V.

The transfer frame 2F is provided with a drive shaft 50 provided on an upper portion of a support frame 5 formed upright on the machine base 20.
Is supported as a rotation fulcrum, so that the scraping-up conveyance device 2c can be turned up and down in a forwardly inclined posture with the intermediate portion of the conveyance body 2b in the front-rear direction as a fulcrum. Make up. Further, in the housing frame of the support frame 5,
A transmission mechanism for driving the drive shaft 50 to rotate from the engine 2E is provided.
The rotation shaft 6 of the scraping device 2a is freely driven to refractively transmit via a shaft transmission mechanism 53 extending forward and outside the transport frame 2F, and is disposed along the rear side of the transport frame 2F. The drive roller 23 is driven to rotate via a transmission conversion mechanism 56.

At the rear part of the transport body 2b, the contaminated sand W transported and released by the transport belt 2V is received and slid down.
A transfer device (shutter) 8 for guiding and supplying the container into the container 31 of the unloader 3 is provided, and the transfer device 8 in the illustrated example is formed to have a U-shape in cross section, and the front end is conveyed. Pivotally supporting a mounting shaft 80 provided at the lower rear end of the frame 2F, and connecting a middle portion of the transfer device 8 to a rear portion of the machine base 20 by a support rod 81 whose length can be adjusted. Thereby, the adjustment of the working posture of the transfer device 8 and the switching between the storage posture and the storage posture can be freely performed.

Thus, the scraping machine 2 uses the scraping device 2a to scrape off the contaminated sand W with the scraper 13 at a predetermined shaving depth with the width of the scraping site W2 and the spiral body 61 from both sides thereof. While being steadily rubbed against one side (central part) so as not to cause a leak, the guide cover 21
b can be accurately transferred onto the conveyor belt 2V,
Further, the contaminated sand W placed on the conveyor belt 2V is conveyed upward and rearward, and is discharged and conveyed to the transfer device 8 at the end thereof, and the conveyed contaminated sand W is transferred to the transfer device 8. The container can be slid down and discharged from the terminal end into the container 31 of the unloader 3 in a satisfactory manner.

Next, the shaving depth adjusting device 7 will be described. On the front side of the cover body 21 of the scraping device 2a,
As shown in FIG. 4 to FIG. 6 and FIG. 12, a shaving capable of adjusting the shaving depth of the soil sand W by the spiral body 61 and the scraper 13 while grounding and supporting the scraping device 2 a on the ground surface. A depth adjusting device 7 is provided, and the shaving depth adjusting device 7 is detachably attached to and supported by a front portion of a raking device frame 2H formed upright at the center of the cover body 21. . The shaving depth adjusting device 7 can make the running of the scraper 2 excellent while supporting the self-weight of the scraping device 2a by grounding the left and right sled bodies 70 to the ground, and can also make the scraper The adjustment of the shaving depth by the thirteen can be easily and appropriately performed.

That is, the shaving depth adjusting device 7 includes a main holder 71 vertically provided on the front surface of the raking device frame 2H,
1, a support rod 72 supported by the handle 72a so as to be able to ascend and descend by a forward and reverse rotation operation, a support arm 73 having a central portion horizontally provided at a lower end of the support rod 72, and provided on both sides thereof. An adjusting mechanism 7a is provided which allows the left and right sled bodies 70 to be individually lifted and lowered. The adjusting mechanism 7a is moved up and down in the adjusting cylinder 75 by rotating the adjusting cylinder 75 suspended from the support arm 73 so that the adjusting mechanism 7a is supported close to the front of both sides of the cover body 21. It comprises a support rod 76 that is supported so as to be supported, and an urging support mechanism 7b formed between the support rod 76 and the sled body 70.

With this configuration, when the handle 72a is rotated, the shaving depth adjusting device 7 can simultaneously move the left and right sled members 70 by the same amount through the support rod 72, the support arm 73, and the adjustment mechanism 7a. When the up and down adjustment is performed well and each adjustment handle 75a is individually rotated, the left and right sled bodies 7
0 can be individually raised and lowered. Therefore, when the handle 72a is rotated forward, the left and right sleds 70 descend and support the scraping device 2a in the upward direction. As a result, the spiral body 61 and the scraper 13 thinly remove the dirt W at a shallow position (thin layer cutting). When the handle 72a is rotated in the reverse direction,
Since the sled body 70 rises and supports the scraping device 2a in the downward direction, the spiral body 61 and the scraper 13 cut the dirt W thickly at a deep position (thick layer cutting).

Further, in the operation of the filtration ground K having a soft ground, when one of the traveling devices 20a is significantly sunk below the other traveling device 20a, and the vehicle travels while tilting to one side, the squeeze is performed. The device 2a also inclines greatly toward the tilting side, and the spiral body 61 and the scraper 13 cut the soil sand W on this side in a thick layer and the other one in a thin layer. In the present invention, Tilt-side adjustment mechanism 7
When the handle 75a is rotated forward, the sled 70 descends and supports this side of the scraping device 2a in the upward direction. As a result, the scraper 13 can be scraped satisfactorily with a substantially uniform left and right layer thickness. Can be done. Reference numeral 75b denotes a lock handle for preventing the support rod 76 from rattling.

Further, the biasing support mechanism 7b is provided with a mounting bracket 70a projecting from the lower end of the support rod 76 at the center of the sled body 70 and supported by a mounting pin 70b so as to be swingably rotatable. The bases of the connecting rods 77 and 78 formed in a U-shape in a view are pivotally pivotally connected to the middle part of the support rod 76 and the mounting bracket provided on the front side of the mounting bracket 70a via each support shaft. At the same time, the free ends of the connecting rods 77 and 78 are connected by connecting pins 79, and both ends of the coiled spring 9 inserted into the connecting pins 79 are connected to the connecting rods 77 and 78, respectively.
By locking each of the sleds 78 separately, the front side of the sled 70 can be urged to swing downward about the mounting pin 70b.

The sled 70 provided on the support rod 76 via the biasing support mechanism 7b as described above forms a sled surface by curving the front of the wide flat plate upward to form a sled surface. When the sled 70 swings and swings due to unevenness of the ground, the rear end of the spiral 61 is overlapped with the rotational trajectory of the spiral 61 of the scraping device 2a in plan view.
As a result, the sled 70 is not greatly protruded forward while enlarging the grounding surface of the sled 70, and the scraping device 2a
The grounding support can be favorably performed.

Therefore, the cutting depth adjusting device 7 having the sled 70 urged and supported by the urging support mechanism 7b as described above.
When the self-weight of the scraping device 2a travels while being substantially uniformly supported on the ground by the left and right sleds 70, the sled 70 is attached to the mounting pin against the downward biasing force of the spring 9 along the unevenness existing on the ground surface. 70b is pivoted up and down about the fulcrum, and while this is leveled substantially, the shock at the time of sliding due to unevenness or the like is buffered, the minute vertical fluctuation of the scraper 13 is suppressed, and the sand W is adjusted. It is possible to cut accurately with a predetermined layer thickness set in 7a. Also, since the scraping device 2a is rotatably supported by the three-point link mechanism 22b, the left and right sled members 70 are suitable for large unevenness on the ground surface and horizontal inclined surfaces of the undulating surface. When sliding along the slope, the scraping device 2a is rolled to the inclined surface via the scraping depth adjusting device 7, so that the spiral body 61 and the scraper 13 are substantially parallel to the inclined surface and have a predetermined layer thickness. It can be cut with high precision.

Next, the unloader 3 will be described with reference to FIGS. 2, 3, 8, and 9. FIG. In the unloader 3, a box-shaped container 31 is detachably provided on a loading portion of a machine base 30 having a crawler-type traveling device 30a, and a steering device such as a steering lever 3a, an accelerator lever 3b and the like are provided behind the container. A control section 3d having a seat 3c is provided, and an engine 3E is disposed on a side of the control section 3d. The container 31 includes a side wall 32 that is formed open so that the dirty sand W can be charged from above, and the side wall 32.
A bottom plate 35 that forms a funnel-shaped discharge port 33 at the center in the left-right and front-rear directions at the bottom of the inside, and a shutter 36 that closes the discharge port 33 so that the discharge port 33 can be opened and closed, and this shutter 36 has an operation lever 37a It is rotatably supported by a support shaft 38 provided on the front and rear side walls 32 via a support arm 37.

The container 31 is provided with a hanger 39 capable of hanging the center of gravity stably and stably at the center of both side walls 32 so as to be able to swing up and down. With this configuration, the unloader 3
In a state in which the hanging tool 39 is turned down and the container 31 is installed on the machine base 30, as shown in FIGS. 2 and 3, the sand W can be satisfactorily stored in the container 31 from the scraper 2. When it is possible to discharge the contaminated sand W, the hanging tool 39 is set up and hung on a hanging portion (not shown) of a hoist such as a crane, then lifted, and then moved to the above-mentioned storage location K3. When the shutter 36 is opened and operated via the operation lever 37a as indicated by the dotted line, the sand W can be easily and accurately discharged from the discharge port 33. still,
Reference numeral 30b denotes a rear-end collision prevention device for preventing the rear-end collision of the unloading machine 3 when the unloader 3 runs behind the hoisting machine 2, and the rear-end collision prevention device 30b is the same as a conventional one. With such a configuration, it is installed from the machine base 30 to the front of the container 31.

Next, a description will be given of the operation of scraping and discharging the sand and the like from the filtration pond K by the scraper 2 configured as described above. First, when the scraper 2 is moved to the filtration pond K, the scraping device 2a scrapes off the soil sand W on the surface at a predetermined depth by the spiral body 61 and the scraper 13, and is directed toward the center by the spiral bodies 61 on both sides. The embankment raked to a predetermined width by the rake body 60a is lifted and sent to the rear carrier 2b by the rake body 60a, and the unloading machine 3 following the rake mechanism 2 from its end.
When the container 31 is full of the contaminated sand W and the container 31 is full of the contaminated sand W, the unloading machine 3 is run independently and the scraping site W is removed.
2 to a predetermined location such as the unloading device K2 or the storage location K3, and transported.

At this time, the scraping machine 2 has the scraping device 2a grounded via the left and right sleds 70 of the scraping depth adjusting device 7, and the rolling rotation at the front of the machine by the three-point link mechanism 22b. By being supported as possible, it is possible to satisfactorily scoop up the soil W on the ground surface in conformity with the unevenness of the ground at the scraping site W2, and thus scrape the soil W without leaving the sand W at the scraping site W2. The above work can be performed accurately and satisfactorily. In addition, the scavenged sand W is transported by the transport body 2b to a high position rearward and upward of the machine body, and is satisfactorily discharged from the end portion thereof through the transfer device 8, so that the trailing unloading machine 3 It can be accurately stored in the container 31.

Therefore, the self-propelled scraper 2 constructed as described above and the sand W discharged from the scraper 2 are transferred to the container 31.
The self-propelled unloading machines 3 that receive and house the work are linked to each other, so that each working machine can be configured to be reduced in weight, and when these working machines travel through the filtration pond K, The sinking of the fuselage due to its own weight can be suppressed as much as possible, the work can be performed accurately and efficiently, and the debris W can be prevented without impairing the filtering performance by preventing damage caused by crushing the filtration layer by its own weight. , And it is possible to continuously perform good water purification treatment.

Next, a case where the technical concept of the present invention is incorporated in the scraper 1 conventionally used will be described with reference to FIGS. That is, the scraping machine 1 is equipped with an engine 1E in the front, equipped with a two-wheel drive type wheel 1S made of low-pressure tires, and a traveling body 10 in which a bifurcated handle 1H is extended rearward. It comprises a raking device 1a wider than the rut spacing of the wheels 1S mounted and supported at the rear of the traveling body 10. The scraping device 1a includes a traveling body 10
A pair of left and right spirals 61 that scrape the dirt W and transfer them inside each other are rotatably supported by rotating shafts 6 protruding on both sides of a transmission case 10a extending rearward from the shaft.

The spiral body 61 is supported by the rear part of the traveling machine body 10 and has a cover body 1 having an opening 21c below.
1 and has a scraper 13 similar to the scraper 2, and the rear wall at the central portion of the cover body 11 is notched in a mountain shape to discharge the scraping sand W
5 and an outlet 15 behind the cover body 11.
Gauge plate (leveling plate) 16 that slides along the ground on both sides of
Are mounted via a height adjusting mechanism 17. Then, the cover body 11 of the scraping device 1a configured as described above.
A shaving depth adjusting device 7 similar to the above is provided at the front, but the shaving depth adjusting device 7 is provided detachably without rolling on the body, and its sled body 7 is provided.
0 and the adjusting mechanism 7a are provided at positions adjacent to the outside of the wheel 1S.

The scraping machine 1 constructed as described above is connected to the filtration pond K
When running on the ground, the scraping device 1a gathers the left and right spirals 61 by scraping the soil sand W on the ground surface to a center inside from both sides while shaving the soil sand W at a predetermined depth. When discharged backward from the discharge port 15, the outer shape is formed in a mountain-shaped embankment shape, and the scraping strip W <b> 1 is formed neatly at a substantially central portion of the scraping trace site W <b> 2 in a single row along the machine body traveling direction. At this time, since the left and right sled bodies 70 and the gauge plate 16 slide and slide on the ground, the scraping device 1a travels while being stably supported, and can uniformly remove the dirt W from the left and right. .

That is, the scraping machine 1 is driven by left and right wheels 1S composed of low-pressure tires. When the body is tilted left and right due to the difference in height of the ground surface, the low-pressure tire on the lower side of the slope is greatly deformed. This promotes the inclination of the fuselage, so that it is not possible to perform uniform scraping on the left and right sides. Therefore,
The scraping machine 1 equipped with the present apparatus has the scraping machine 1 placed on a flat surface in advance, and in a state where the machine is equilibrated by grounding with the low-pressure tire, the adjusting mechanism 7a is operated to adjust the left and right sled bodies 70 by the same amount. By adjusting the position of the tire slightly above the ground contact position of the tire (considering the amount of the tire sinking below the ground surface for traveling), even if the aircraft leans left or right during work, the sled It is capable of supporting the airframe, stably supporting the airframe in an equilibrium state without deformation of the low-pressure tire, and performing uniform scraping work. As described above, the present apparatus is not limited to the scraper 2 but can be used for the scraper 1.

In the scraping device 2a and the scraping device 1a described above, a conical guide roller 6a converging inward is attached to the rotating shaft 6 on both sides of the scraping body 60a as shown in FIG. In this state, a helical body 61 that scrapes and transports the scraped sand W inward with rotation may be attached to the outer circumference of the guide roller 6a, and in this case, the scraper 13 and the scraping body 60a may be used. The contaminated conical surface of the guide roller 6a separates the scraped sand W into a spiral 6
There is an advantage that the transfer to the inside can be performed more favorably in cooperation with (1). In addition, the scraper 2 equipped with the present invention is not limited to the use of the above-mentioned filter pond, but is also used for removing surface sand and dust and the like on the beach, and removing the surface layer which is performed in the case of soil on a field or the like. It can be used effectively.

[0039]

According to the present invention, the following effects can be obtained by the above-described configuration. According to the invention of claim 1,
Since the scraping device is supported by the sled body at the front side and the rear portion is supported by the scraper, the scraping device can be stably supported even if the scraping device is long. The scraper can be used also as a scraper, and a scraper can be omitted to provide an inexpensive sludge treatment device. In addition, by adjusting the sled body up and down with respect to the scraper, the shaving depth can be accurately adjusted. it can.

According to the second aspect of the present invention, the rear side of the sled body is overlapped with the rotation trajectory of the scraping body in plan view and is close to the sled body, so that the sled body is moved forward while expanding the ground contact surface of the sled body. The device can be reduced in size without protruding greatly.

According to the third aspect of the present invention, the sled body rotatably supported by the support rod vertically suspended from the cover body and urged downward by the urging support mechanism travels while supporting the scraping device on the ground. When it is done, it rotates up and down against the downward biasing force of the spring along the unevenness of the ground surface, etc., so that it is possible to buffer the impact at the time of sliding while leveling the ground surface, and to finely adjust the scraping device and the scraper. Up and down fluctuations can be suppressed, so that sand and the like can be accurately cut with a predetermined layer thickness.

According to the fourth aspect of the present invention, the scraping device rotatably supported by the traveling body can adjust the shaving depth when the left and right sleds slide on an inclined surface such as large irregularities or undulations on the ground. Since the scraping device is rolled and rotated on the inclined surface via the device, the scraping device and the scraper can be cut with a predetermined layer thickness with high precision while being substantially parallel to the inclined surface.

According to the fifth aspect of the present invention, the left and right sleds are provided so as to be able to be raised and lowered simultaneously, and the left and right sleds are separately provided so as to be adjustable up and down. It is possible to sharply remove dirt or the like by adjusting the lifting and lowering well. Also, since the left and right sleds can be individually adjusted up and down, the sleds can be individually adjusted up and down even when the aircraft runs while tilting to one side on a soft ground filtration ground etc. By supporting the scraping device in an appropriate posture, the scraping device and the scraper can satisfactorily scrape the layer thickness of the left and right substantially equal layers.

[Brief description of the drawings]

FIG. 1A is a plan view showing a work for scraping and carrying out dirty sand from a filtration pond. (B) is a perspective view showing each operation of (A).

FIG. 2 is a side view showing a working state of the scraper and the unloader.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a plan view showing a configuration of a scraping device and a scraping depth adjusting device.

FIG. 5 is a side view of FIG. 4 partially broken away.

FIG. 6 is a plan view showing a mounting structure of a sled body.

FIG. 7 is a plan view of a main part showing another embodiment of the scraping device.

FIG. 8 is a side view showing the operation of the container of the unloader.

9 is a front view showing the configuration of the container shown in FIG.

FIG. 10 is a side view of the scraper.

FIG. 11 is a plan view of FIG. 10;

FIG. 12 is a perspective view of FIG. 4;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 scraping machine 1a scraping device 2 scraping device 2a scraping device 2b carrier 2c scraping transport device 6 rotating shaft 7 shaving depth adjusting device 7a adjusting mechanism 7b biasing support mechanism 9 spring 13 scraper 20 traveling machine body 21 cover Body 22b Three-point link mechanism 50 Drive shaft (horizontal axis) 60 Raising blade 60a Raising body 61 Spiral (scraping body) 70 Sled body 75a Handle 76 Support rod W Soil

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masatoshi Hashimoto 560, Iya-cho, Oji-machi, Higashi-Izumo-cho, Yatsuka-gun, Shimane 3 Inside Ryono Engineering Co., Ltd. No. 560 3 Inside Ryono Engineering Co., Ltd. (72) Inventor Yukio Hosoda Oyama, Yatsuka-gun, Yatsuka-gun, Shimane Prefecture 560-3 Inside Rishino Engineering Co., Ltd. (72) Inventor Nanba Izumi, Higashi-Izumocho, Yatsuka-gun, Shimane Prefecture 560, Iya-cho, 3 Ryono Engineering Co., Ltd. (72) Inventor Koji Koto, 560, Iza-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 3 In Rishino Engineering Co., Ltd. Town No. 800 No. 249 (72) Inventor Kazuhiko Ochihata 2974 Imobo, Higashiyamato-shi, Tokyo Ground (72) Inventor Taku Kanemi 29-3 Takatsudo-cho, Midori-ku, Chiba-shi, Chiba 611 Sunvale Chiba (72) Inventor Tetsu Miyoshi 1-14-22, Narita Higashi, Suginami-ku, Tokyo Hydens 102

Claims (5)

[Claims] A scraping device (2a) is connected to a traveling body (20).
In the scraping machine (2) mounted on the surface, the scraping device (2a) is formed by shaving off dirt W or the like on the ground in a cover body (21) having an opening (21c) at a lower portion. A spiral scraping body (61) to be transferred to the side while
A scraper (13) having a blade edge close to the rotation locus of the scraping body (61) is provided at the rear part of the cover body (21), and a sled body (70) is raised and lowered under the front part of the cover body (21). An apparatus for adjusting the shaving depth of a scraper for scraping sand or the like, which is provided so as to be adjustable. The scraping device (2a) is connected to a traveling body (20).
In the scraping machine (2) mounted on the surface, the scraping device (2a) is formed by shaving off dirt W or the like on the ground in a cover body (21) having an opening (21c) at a lower portion. A spiral scraping body (61) to be transferred to the side while
A scraper (13) having a cutting edge close to the rotation locus of the scraping body (61) is provided at the rear part of the cover body (21), and left and right sled bodies (7) are provided below the front part of the cover body (21).
2. A scraper for removing contaminated sand or the like according to claim 1, wherein the scraper (0) is provided so as to be adjustable in elevation and the rear end of the sled (70) overlaps with the rotation locus of the scraper (61) in plan view. Cutting depth adjustment device. 3. A sled body (70) is rotatably supported by a support rod (72) suspended from the cover body (21), and is urged downward by an urging support mechanism (7b). 3. The device for adjusting the shaving depth of a scraper for scraping sand or the like according to claim 1, wherein The scraping device (2a) is connected to a traveling body (20).
4. The method of claim 1 or 2 or 3 wherein the rolling means is rotatably supported.
A device for adjusting the shaving depth of a scraper for scraping sand. 5. The dirt according to claim 1, wherein the left and right sleds (70) are provided so as to be adjustable up and down at the same time, and the left and right sleds (70) are individually adjustable up and down. A device for adjusting the shaving depth of a sand or other scraper.