JPH10195920A - Raking conveyor in raking device for polluted sand, etc. - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply execute the adjustment of cutting quantity and raking quantity applicable to a condition of the ground with high degree of accuracy and, at the same time, to provide a rising and falling mechanism of the raking conveyor capable of excellently carrying out getting-over travelling, inclining travelling, etc., with simple constitution at low cost. SOLUTION: A raking conveyor 2a constituted of raker and conveyor body is provided to a bearing frame 5F of a travelling machine body 20 with a horizontal shaft 50 as the center in a vertically turnable manner through an actuator 2S. The raker is borne on the front end section of the conveyor body in an independently liftable manner, the raker is raised and lowered with primary operation of the actuator 2S and, at the same time, the raker is maintained in a state of a rising posture with secondary operation of the actuator 2S to integrally raise and lower the conveyor body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scraping and conveying device in a scraping machine for scraping and transferring soil and the like on the surface of a surface such as a slow filtration pond used for water supply filtration.

[0002]

2. Description of the Related Art In general, such a filter for water supply as described above is installed in a filter layer having a coarse gravel layer as a lower layer and a fine sand layer as an upper layer in an interior surrounded by a concrete peripheral wall. Since the filtration layer forms a soil layer on the surface with the water treatment, the soil is periodically scraped off to a predetermined thickness, removed to the outside of the filtration pond and removed, and a new surface layer is exposed to purify the water. To continue. Conventionally, it is known that the above-mentioned operation of removing contaminated sand and the like in a filtration pond is performed by a filtration sand scraping device having a configuration disclosed in Japanese Utility Model Application Laid-Open No. 6-30240. This filter sand scraping device has a control unit and a container for storing dirty sand on a machine base having a crawler-type traveling device, and also has a scraping device (a scraping device) and a sand lifting device (a scraping device). And a sand transporting device (scraping transporting device) integrally assembled with the container is supported so as to be able to move up and down on a machine base in front of the container.

[0003]

However, the filter sand scraping device according to the above-mentioned publication has a machine structure in which a heavy structure scraping and transporting device including a scraping device and a scraping device is supported on a machine base.
The parallel arrangement of containers that accommodate a large amount of dirty sand complicates the configuration and increases the weight of the fuselage. There are drawbacks such as disturbing by leaving the filter or excessively crushing the filtration layer to impair the filtration performance. In addition, the above-mentioned scraping and conveying device raises and lowers the scraping device and the scraping device integrally, and adjusts the amount of shaved sand during the scraping operation. It is difficult to finely adjust the shaving amount, and there are drawbacks such as not being able to scrape up dirty sand with good accuracy.
In order to vertically move a long scraping and conveying device, an actuator such as a large hydraulic cylinder having a large lift is required, and there is a problem that the elevating mechanism is complicated and the cost is increased.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, the present invention relates to a scraping-and-conveying device in a scraping machine for contaminated sand and the like, which firstly comprises a scraping device and a conveying member. An upper conveying device is provided on a support frame of the traveling machine body so as to be vertically rotatable around an abscissa through an actuator, and the raking machine which supports the raking device so as to be able to move up and down independently at a front end portion of the conveying body. The lifting device is moved up and down by the primary operation of the actuator, and the secondary operation of the actuator keeps the lifting device in the ascending posture to integrally move the carrier.

[0005] Secondly, the present invention is characterized in that the scraping device is supported by a transport frame of a transport body by a three-point link mechanism.

[0006]

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 by a long-term water purification treatment by a scraping and carrying-out method and an apparatus described below in detail, and the surface sand and the like (hereinafter, referred to as dirty sand) W are predetermined. Of the thickness (about 10 to 30 mm), and carry it out to the carry-out device K2 such as a carry-out conveyer installed at an appropriate place of the filter pond K. Thereby, the contaminated sand W is carried out of the filter pond K or filtered. By temporarily carrying out and accumulating the water at the appropriate storage point K3 in the pond K, the soil layer of the filter pond K is removed, a new surface layer is exposed, and the water purification treatment can be favorably continued.

As shown in FIG. 1B, the scraping and unloading device of the present invention used for the filtration pond K scrapes off the soil sand W on the ground surface to a predetermined thickness by a scraping device 1a. Self-propelled scraping machine 1 that scrapes W1 to scraping site W2 to a predetermined width
A self-propelled raking machine 2 that lifts up the scraping line W1 by a raking and conveying device 2a, and conveys and discharges the rearward and upward direction;
It comprises working machines such as an unloading machine 3 which receives the dirt W discharged from the scraping machine 2 in a container 31 and accommodates the same, and each of these working machines performs scraping and unloading work by the following working method. ing.

That is, the scraper 1 is first placed on the ground of the filtration pond K.
Is run straight, and while scraping the surface sand S in a predetermined manner, it is raked to the center of the width of the scraping site W2 to form an embankment-like scraping strip W1. Next, the scraping machine 2 and the unloading machine 3 are moved in parallel to the scraping site W2 to scrape the soil W of the scraping strip W1 from the ground and transport the soil sand W rearward. In the above, the container is accommodated in the container 31 of the unloader 3 via the transfer device 8, and is unloaded to a predetermined place such as the unloading device K2 or the storage location K3 and discharged. The purpose is to easily and efficiently remove the soil sand W while preventing damage, and to continuously continue good water purification treatment.

The detailed structure of the above device will be described below. First, the scraper 1 will be described with reference to FIG. 2. The scraper 1 is a traveling machine body having an engine 1E mounted on the front side, two-wheel drive type wheels 1S, and a forked handle 1H extending rearward. And a scraping device 1a attached to and supported by a rear portion of the traveling body 10 and wider than the rut interval between the wheels 1S, 1S.
It is composed of The scraping device 1a includes a traveling machine 1
A transmission shaft 10b, 10b protruding from both sides of a transmission case 10a extending rearward from 0, and a semi-cylindrical gabber frame 11, which is supported by a mounting frame 11a at a rear portion of the traveling body 10 and is opened downward, A pair of left and right spirals 12 for scraping the sand W and transferring them inward to each other are supported rotatably downwardly, and a cutting edge capable of earth-cutting in the width direction along the ground surface over the entire width behind the spirals 12. Is formed, a rear wall at a central portion of the cover frame 11 is cut into a mountain shape to form an outlet 15 for the scraped sand W, and the discharge port 15 is provided behind the cover frame 11. A gauge plate (leveling plate) 16 that slides along the ground on both sides of the device is mounted via a height adjusting mechanism 17.

[0010] The scraper 1 constructed as described above is used for the filtration pond K.
When the left and right spiral bodies 12, 12 scrape the ground sand W at a predetermined depth, the scraping device 1a collects the collected sand by scraping it to the inner central portion from both sides. When the W is discharged backward from the discharge port 15, the outer shape is formed into a mountain-shaped embankment, and the scraping strip W1 is formed neatly at a substantially central portion of the scraping trace W2 in a single row along the machine body traveling direction.
At this time, since the gauge plate 16 is slid and slid on the ground, the scraping device 1a is supported so as to reduce the scraping depth to an appropriate value, and the scraping plate 13 is satisfactorily smoothed at the scraping site W2. By doing so, the surface of the scraping site W2 can be made a clean and flat surface with a good finish.

At this time, the scraping machine 1 is such that the traveling body 10 is a lightweight walking type, and the scraping device 1a manufactured with a simple structure is slidably supported by a gauge plate 16 having a wide surface. Therefore, while the weight of the fuselage device and the ground pressure are reduced as much as possible, when scraping on soft ground covered with a soil layer, the fuselage may be greatly lowered and the scraping performance may be impaired. There is such a feature that a trace is formed deeply to prevent the filtration layer from being damaged and the water purification performance of the filtration pond K to be reduced, and that a good scraping operation can be performed efficiently.

Next, the structure of the scraper 2 will be described with reference to FIGS.
This will be described with reference to FIG. The scraping machine 2 of the illustrated example includes a scraping device 2b that scrapes and scrapes the soil W of the scraping strip W1 from both sides onto a machine base (running body) 20 having a crawler-type traveling device 20a. A transport body 2 that inherits the contaminated sand W picked up by the scraping device 2b and conveys the dust sand W upward and rearward of the scraper 2.
c to a support mechanism 5 to be described later.
The transport frame 2F is mounted on the drive shaft 50
Along the middle of the front-back direction, with a forward leaning posture with the front lower and the rear higher, and swingably supported,
The engine 2E is disposed in a space widely formed below the carrier 2c behind the support mechanism 5. This makes it possible to favorably turn the scraping and conveying device 2a up and down with a small power around the middle thereof, and to compactly install the support mechanism 5 and the engine 2E below and behind the scraping and conveying device 2a. It is configured to be able to. Further, the steering section 5a including the lifting lever 5L and the like for controlling the lifting and lowering operation of the steering lever 5b and the lifting and conveying device 2a, and the seat 5c,
In this embodiment, the machine base 2 is located on the right side of the carrier 2c.
It is installed offset from zero.

[0013] As shown in FIGS.
The rotary shaft 6 is laid laterally so as to be rotatable downward in a cover frame 21 formed to be wider than the scraping strip W1 and narrower than the width of the scraping site W2. Raised feather 6
0 is protruded in the radial direction, and a spiral body 61 is provided on both sides of the scraper 60a. And a scraping device 61a for scraping and scraping to the inner central part. Further, the cover frame 21 cuts out the rear part of the raking blades 60 to form a discharge port 21a for raising and discharging the dirty sand W to the rear, and a receiving plate 21b is laid below the discharge port 21a. The end is located at the upper center of the front end of the carrier 2c, so that the contaminated sand W discharged from the scraping device 2b is smoothly transferred to the carrier 2c.

Then, the scraping device 2b configured as described above is provided with a support shaft 21G protruding from both sides of the cover frame 21.
The support shaft 2J protruding from both sides of the transfer frame 2F of the transfer body 2c is rotatably connected to the support shaft 2J by a support rod 22, and the support shaft 21S provided at the center of the cover frame 21 is connected to the front of the transfer frame 2F. Shaft 2K and support rod 2 provided above the center
The two-point link mechanism 22b constitutes and supports the three-point link mechanism 22b. Thus, the scraping device 2b can be movably supported on the carrier 2c so as to be able to swing independently to the left and right along the slope or uneven surface of the scraping site W2 with respect to the carrier 2c. In addition, it is possible to scrape and scoop up the sewage W and the like scattered on the side while accurately and accurately shaving it.

Further, the scraping device 2b includes the support shafts 2 on both sides.
The 1G is connected to an operating pin 71 of a lifting mechanism 7 described later via a lifting rod 70, so that the 1G can be independently raised and lowered in a predetermined angle range while being supported by the three-point link mechanism 22b. Further, a grounding sled 21d is provided on both sides of the cover frame 21 of the scraping device 2b, and the sled 21d is grounded on the ground to travel, thereby supporting the scraping device 2b while supporting its own weight. The scraping device 61a performs the scraping operation with high accuracy.

On the other hand, as shown in FIGS. 5, 8, and 9, the transporting body 2c is provided with a floating roller 23a at the front and rear ends of transport frames 2F, 2F arranged side by side in the front-rear direction with a transport interval. A roller 23 is supported on the roller 23, and a transport belt 2V made of a flexible rubber or plastic material is wound around the roller 23, and an appropriate number of rollers are provided between the transport frames 2F, 2F at predetermined intervals in the front-rear direction. The guide roller 23b and the receiving roller 23c guide the rolling back of the transport-side back surface and the non-transport-side surface of the transport belt 2V.
As shown in FIG. 10, the transport belt 2V is configured such that the belt tension can be freely adjusted by a tension lever 24 having a tension roller 24a at a turning portion on the transport end side.

The transfer frame 2F supports the metal part 2M which supports the drive shaft 50 by a metal part 5M formed on the support frame 5F of the support mechanism 5 so that the scraping transfer device 2a is supported by the transfer member. It is configured to be rotatable up and down in a forwardly inclined posture, with a middle point in the front-rear direction 2c as a fulcrum. The support frame 5F is configured such that a pedestal portion 5F1 integrally formed in a lower part in a planar view rectangular shape is removably fastened to the machine base 20 with mounting screws 5N, thereby attaching the support frame 5F. Upper transfer device 2a
Can be easily removed from the machine base 20 together with the support mechanism 5, and a working device (not shown) such as a civil working machine or an agricultural work machine can be installed on the machine base 20 after the removal. When the scraper 2 is not used, the traveling machine body can be easily and effectively used for other purposes. Further, according to the above configuration, in manufacturing the scraping machine 2,
a and the support mechanism 5 can be assembled by simply placing them on the machine base 20 by post-installation work in a state where they are assembled in advance by separate assembling work, and the scraper 2 can be manufactured efficiently and easily. And so on.

The support belt 5F formed in the shape of the housing of the support mechanism 5 has a transmission belt 5 from the engine 2E.
An input shaft 51 having an input pulley 51a driven by winding V is supported and transmitted from an output pulley 51b attached to the input shaft 51 to an input pulley 51c of a hydraulic pump 2P installed below. The power is transmitted through the belt 5V, and the input pulley 50a of the drive shaft 50 is transmitted from the output pulley 51d.
Is transmitted via a transmission belt 5V. When the support frame 5F is removed as described above, these transmissions can be integrally removed from the machine base 20 together with the support frame 5F.

At the other end of the input pulley 50a of the drive shaft 50, a transmission conversion mechanism 52 such as a bevel gear is mounted and installed on the transport frame 2F, and a shaft transmission mechanism rotationally transmitted by the transmission conversion mechanism 52 is provided. 53 is the transport frame 2
The rotary shaft 6 of the scraping device 2b is rotatably driven via a free transmission shaft 55 and a transmission conversion mechanism 55a at the front end along the outside of the front frame F, and the transmission of the rear end of the transport frame 2F. Drive roller 23 via conversion mechanism 56
Is driven to rotate. In addition, as shown in the illustrated example, if the lifting and conveying device 2a is swingably supported on the pivot portion of the drive shaft 50 as a fulcrum, the support configuration and the transmission configuration can be simplified as described above. The swing fulcrum is not limited to this, and may be provided at a desired position in the longitudinal direction of the transport frame 2F.

Reference numeral 8 denotes a transfer device (shutter) at the rear of the transporting body 2c, which receives the contaminated sand W conveyed and discharged by the conveying belt 2V, slides it backward, and guides and supplies it into the container 31 of the unloader 3. In the illustrated example, the transfer device 8 is formed in a U-shape in cross section, and its front end is rotatably supported by a mounting shaft 80 at the lower rear end of the transfer frame 2F, and at the middle of the transfer device 8. The upper end of a support rod 83 having an adjustable length, which is attached to a support post 20b erected from the rear of the machine base 20 by a support shaft 20c, is attached to a bracket 81 formed at the end and a bracket 82 formed at the end portion. 85 is supported so as to be switchable between the working posture and the storage posture.

In this way, in the above-mentioned working posture, the transfer rod 8 can be supported by the support rod 83 even when the scraping and conveying device 2a rotates about the drive shaft 50 and the rear end of the conveying member 2c is lowered.
By being supported by being pushed up by
The dirt W can be appropriately discharged into the container 31 of the unloader 3 without lowering the terminal end much. Also, the switching of the storage position can be performed by removing the mounting pin 85 from the bracket 81 and replacing the upper end of the support rod 83 with the bracket 82, thereby changing the transfer device 8 to the hanging position approaching the machine indicated by the dotted line. Since it is possible, the length of the machine body can be easily shortened, and the storage of the scraper 2 can be made compact.

Next, the structure of the lifting mechanism 7 will be described with reference to FIGS. 8 and 9B. This lifting mechanism 7
An operating shaft 72 is rotatably mounted between support plates 25, 25 vertically suspended from the front sides of the support frames 2F, 2F, and the operating shaft 72 is pivotally mounted on the machine base 20 at the center thereof. The operating arm 73 for connecting the hydraulic cylinder (actuator) 2S is fixed, and the operating piece 71a having the operating pins 71, 71 is fixed to both shaft ends of the operating shaft 72.
An operating portion 73a is formed to project from a lower portion on the front side of the operating arm 73.

Then, as shown in FIG.
A passive rod 26 is provided laterally between the lower front portions 5 and 25, and when the operating arm 73 is turned forward by a predetermined amount as indicated by a dotted line by a hydraulic cylinder 2S, the passive arm 26 comes into contact with the operating portion 73a. And the scraping and conveying device 2a via the support plate 25
Can be rotated upward about the drive shaft 50. Further, the scraping device 2b and the operating pin 71,
As shown in FIG. 3 (B), the lifting rod 70 connecting the rod 71 with the front and rear rods 71, 75
6, and the spring 76S inserted into the elastic holding mechanism 76 elastically supports the left and right sides of the scraping device 2b.

Therefore, when the raising / lowering lever 5L installed on the control unit 5a is primarily operated in the front-rear direction, the hydraulic oil of the hydraulic pump 2P extends the hydraulic cylinder 2S, and the operating arm 73 moves together with the operating shaft 72 to the operating piece 71a, the operating piece 71a. Since the pin 71 is rotated in the direction of the arrow, the lifting device 2b can be moved up and down through the elevating rod 70 within the range of the angle θ shown in FIG. Thus, while maintaining the transport posture without moving the heavy and large transport body 2c up and down, the lightweight and small lifting device 2
b can be easily moved up and down to easily adjust the height to the level adapted to the ground condition, so that the contaminated sand W of the scraping strip W1 can be appropriately lifted and transported properly. is there. Further, the lifting device 2b is supported by the three-point link mechanism 22b, and both sides thereof are supported via the lifting rod 70 having the elastic mechanism 76, so that the right and left sides and the slight unevenness of the ground can be also adjusted. It can follow up and down, and can scoop up the dirty sand W precisely and neatly.

Accordingly, the scraping device 2b removes the dirt W
The scraping wings 60 are arranged at the inner central portion of the helical body 61 in order from the both sides of the one width so as not to cause a leak.
, And can be accurately transferred from the receiving plate 21b onto the conveyor belt 2V, and the contaminated sand W placed on the conveyor belt 2V is conveyed upward and rearward at the terminal end thereof. The contaminated sand W that has been released and transferred to the transfer device 8 and slides down on the transfer device 8, and is discharged and stored in the container 31 of the unloading machine 3 from the end thereof.

Also, when the scraping device 2b is lifted greatly to travel over the scraping streak W1, or when the scraping machine 2 is mounted on a truck or the like using a road plate and travels in an inclined state, it is necessary to raise and lower the device. The hydraulic cylinder 2S can be further extended by performing the secondary operation of the lever 5L, so that the operating arm 73 can be pivoted largely upward to push up the passive rod 26 via the operating portion 73a. As a result, as shown by the dotted line in FIG. 3, in the state where the scraping device 2 b has been most raised to the rotation angle θ of the primary operation, the drive shaft 5 together with the transport body 2 c is
It is possible to integrally rotate about 0, and the above-mentioned inclined traveling can be performed smoothly without any trouble.

Next, the unloading machine 3 will be described with reference to FIGS. In the unloader 3, a box-shaped container 31 is provided in front of a machine base 30 having a crawler-type traveling device 30a so as to be capable of dumping rotation, and a steering lever 32a, a lifting lever 3L, and an accelerator lever 32c are provided behind the container. , A control section 32 having a traveling clutch lever 32d and a seat 32b, and an engine 3E is disposed beside the control section 32. The container 31 is rotatably supported at the front of the machine base 30 via a mounting shaft 33, and the rear side thereof is connected to a hydraulic cylinder 3S pivotally supported by the machine base 30. This allows
The hydraulic cylinder 3S is operated by operating the lift lever 3L.
When the container 31 is extended, the container 31 is dumped around the mounting shaft 33, and at the same time, the tilting plate 31a, which will be described later, is opened to discharge the stored dirty sand W. The above container 3
The lowering plate 31a is provided so as to be openable and closable about a mounting shaft 31c provided above the front portion of the left and right louvers 31b.
As shown by the dotted line, the fanning plate 31a is switched and opened, so that the stored dirty sand W can be quickly discharged.

In addition, a collision preventing device 9 for preventing the collision of the unloading machine 3 with the unloading machine 2 when the unloading machine 3 is running behind the scraping machine 2 is installed on the front surface of the lifting plate 31a. ing.
That is, the rear-end collision preventing device 9 pivotally supports the base of the sensor rod 91 on a support shaft 92 provided on the mounting frame 90, on a mounting frame 90 detachably attached to the lifting plate 31 a. In a state where the base of the sensor rod 93 is slidably supported in a lateral groove (guide rail) formed in the mounting frame 90,
A spring that crosses the middle portions of the sensor rods 91 and 93 and connects the crossed portions with a connecting pin 94 to form a pantograph-shaped cross link and pulls the base side of the sensor rod 93 toward the support shaft 92. 95,
The distal ends of the sensor rods 91 and 93 are urged to protrude forward. A sliding roller 9R is provided at the tip of each of the sensor rods 91 and 93.

In the rear-end collision prevention device 9 configured as a cross link mechanism as described above, one or both of the sensor rod 91 and the sensor rod 93 come into contact with the rear portion of the scraper 2 and are pressed. At this time, the amount of displacement that is displaced backward from the normal posture shown by the solid line in FIG. 12 to the R1 and R2 positions shown by the dotted lines is determined by electric means such as a potentiometer or a limit switch, or the movement of the link by a wire or a connecting rod. Provided so as to be detected by a sensor 9S configured by a linking means such as
By the detection operation of the sensor 9S, the traveling speed is reduced at the R1 position and the traveling of the unloader 3 is stopped at the R2 position to prevent contact (collision) between the unloader 3 and the scraper 2 to prevent both. It is possible to reliably prevent the aircraft from being damaged.

In the embodiment shown in FIG.
Is connected to the governor 3G of the engine 3E and the traveling clutch lever 32d by connecting an operating wire 96 composed of an inner wire and an outer wire connected to the base of the sensor rod 93, and the sensor rod when the rear-end collision prevention device 9 comes into contact with the scraper 2. 91,
The governor 3G is operated to adjust the low speed rotation of the engine 3E in accordance with the degree of the retreating movement of the engine 93, and the traveling clutch lever 32d is operated to the disengaged position in the lowest rotation range. That is, the sensor rod 91,
When the 93 is retracted to the R1 position, the unloader 3 is moved at a low speed to follow the scraper 2 at the same speed, and the sensor rod 9 is moved.
When the first and third gears 93 are moved further to the R2 position, the traveling clutch lever 32d is disengaged and operated in the low-speed rotation range of the engine 3E to stop the traveling of the unloading machine 3, and the collision between the unloading machine 3 and the scraping machine 2 is performed. Is to be able to prevent. The engine 3E is configured to be able to independently adjust the rotation of the engine by an accelerator lever 32c, similarly to a conventional engine.

The unloading machine 3 having the above-described configuration is a
After the contaminated sand W discharged from the transfer device 8 is stored in the container 31 in a piled-up state, the container 31 is driven by itself and carried out by the unloading device K2 or the storage location K3 installed in the filtration tank K. Travel to a predetermined place, etc.
By operating L, the hydraulic cylinder 3S is operated, the container 31 is dumped upward and forward about the mounting shaft 33, and the contained sand W is quickly discharged, and then the container 31 is returned and rotated. This is to return the machine body to a work state in which the machine body follows the original hoisting machine 2 and to continue the storage work. The unloading machine 3 may be performed by a plurality of unloading machines 3. In this case, while the unloading machine 3 is performing unloading work, the accommodating operation can be continuously performed by another unloading machine 3.

In the operation of causing the unloading machine 3 to follow the scraping machine 2, if the scraping machine 2 is stopped unexpectedly or runs slowly due to speed reduction, or the unloading machine 3 is moved at a speed higher than a predetermined speed. In this case, the scraper 2 and the unloader 3 collide. In such a case, in the unloader 3 according to the present invention, the sensor rod of the rear-end collision prevention device 9 installed on the front surface of the container 31 is used. 91 and 93 are rear machine frames 20b of the scraper 2.
, The sensor 9S operates the governor 3G via the operation wire 96 to adjust the rotation of the engine 3E according to the amount of operation, and the sensor rods 91 and 93 rotate the R1. When it is in the vicinity of the position, the trailing machine 3 performs good running at the low speed of the unloading machine 3 corresponding to the running speed of the scraper 2, and when the sensor rods 91 and 93 are further retracted to the R2 position, the running is performed. By immediately disengaging the clutch lever 32d to stop the machine, the unloading machine 3
The collision with the scraper 2 can be accurately prevented, so that the follow-up operation for the scraper 2 can be performed easily and easily.

Next, a description will be given of the operation of scraping and carrying out dirty sand and the like in the filtration pond K performed by the present invention having the above-described structure. First, the scraping device 1a is caused to travel in advance of the filter pond K, and the scraping device 1a causes the surface sand S W to be removed.
With a predetermined thickness and a predetermined width, and the embankment strip W1
Is formed at the center of the scraping site W2. Next, the scraper 2 is caused to travel along the scraping line W1 on the scraping site W2,
The scraping and conveying device 2a lifts and conveys the contaminated sand W of the scraping line W1, and moves the conveyer 3 behind the raking machine 2 to remove the contaminated sand W that is picked and conveyed. When the container 31 is filled with dirty sand W and the container 31 is full, the unloader 3 is independently run and transferred from the scraping site W2 to a predetermined location such as the unloading device K2 or the storage location K3. I do.

At this time, since the scraping device 2b is swingably supported at the front part of the machine by the three-point link mechanism 22b, the scraping device 2 adjusts to the unevenness of the ground at the scraping site W2. Since it is possible to scrape up the soil sand W of the extension W1 without leaking, the scraping work is performed accurately and favorably without leaving the soil sand W at the scraping site W2. In addition, the scavenged sand W is transported by the transport body 2c to a high position behind and above the fuselage, and is discharged from the high end through the transfer device 8 from the end portion thereof. 3 can be accurately and cooperatively stored in the container 31.

As described above, the scraping and unloading device is a self-propelled type in which the soil sand W on the surface of the filtration pond K is scraped by the scraping device 1a with a predetermined width to form the scraping strip W1. A scraping machine 1; a self-propelled scraping machine 2 for scooping up the scraping strip W1 by a scraping and conveying device 2a to convey and discharge it upward and rearward; and a dirt discharged from the scraping machine 2. Sand W into container 31
Each of the unloading machines 3 and the like, which are received and accommodated in the tank, can be independently driven, whereby each of the working machines can be reduced in weight. Of the airframe can be suppressed as much as possible, the work can be performed accurately and efficiently, and the filter layer can be prevented from being damaged by crushing by its own weight to prevent the filtration performance from impairing the filtration performance. There is such a feature that it is possible to carry out the unloading work and to continue good water purification treatment continuously.

In the above-described scraping and conveying operation, the control unit 5a
When the raising / lowering lever 5L installed at the front side is primarily operated in the front-rear direction, the lifting device 2b can be individually raised and lowered in the range of the θ angle shown in FIG. 3 through the lifting rod 70 by extension of the hydraulic cylinder 2S. It is possible to easily adjust the height according to the ground condition by raising and lowering only the light and small lifting device 2b while maintaining the transport posture without moving the heavy and large transport body 2c up and down. It is possible to appropriately scrape the contaminated sand W of the scraping strip W1 and to carry it well. And, since the scraping device 2b is supported by the three-point link mechanism 22b, it can properly follow right and left and up and down even a slight unevenness on the ground, and can scrape up the dirty sand W accurately and neatly. Can be.

In addition, when the lifter 5L is operated secondarily when traveling over the scraping streak W1 or the like or traveling in an inclined state with the scraper 2, the operating arm 73 is further extended by the hydraulic cylinder 2S. Since the passive rod 26 can be pushed upward through the operating portion 73a by being further rotated upward from the time of the primary operation, the lifting device 2b is supported by the carrier 2c while being lifted up at the rotation angle θ of the primary operation. At the same time, it can be lifted and rotated largely integrally with the drive shaft 50 as a center, so that the traveling can be smoothly performed without any trouble. Also, as described above, the lifting lever 5
Since the two types of rotation operations performed by L are constituted by a simple mechanism that can be operated accurately using one hydraulic cylinder 2S, the elevating mechanism 7 of the scraping transfer device 2a can be manufactured simply and at low cost. There are advantages such as being able to.

It should be noted that, in the above embodiment, the scraping line W1
The raking machine 1 and the raking machine 2 for raking the raking W1 are separately configured as independently-operable working machines. However, without being limited to this, as shown in FIG. The work may be configured to be performed by the scraper 2 at the same time. That is, in the drawing, the raking machine 2 forms the raking device 2b of the raking and conveying device 2a to have substantially the same width as the raking device 1a of the raking device 1 described above, and also forms a raking inside the raking device 2b. The scraping devices 61a located on both sides of the upper body 60a are configured to have a wide width, and a simple and lightweight structure is provided by providing a shaving plate or the like as necessary.

Therefore, according to this, while the soil sand W on the ground surface is scraped by the scraping devices 61a on both sides so as to form the scraping strip W1 in the inner central portion of the scraping device 2b, it is scraped at the same time. The contaminated sand W is picked up rearward by the scraping body 60a, and can be easily and efficiently accommodated in the unloading machine 3 which is conveyed and transported by following the transporting body 2c as described above. The present invention is not limited to the use of the filtration pond described above, but can be effectively used for removal of sand and dirt on the beach, removal of the surface layer performed in the case of a soil such as an upland field, and the like. Things.

[0040]

According to the present invention, the following effects can be obtained by the above-described configuration. According to the invention of claim 1,
A scraping and conveying device is provided so as to be rotatable up and down around a horizontal axis, and the scraping device is supported at the front end of the transfer member so as to be able to move up and down independently, and the scraping device is moved up and down by a primary operation of an actuator. The lifting mechanism is maintained in the upright position by the secondary operation of the actuator, and the carrier is moved up and down integrally while the lifting device is maintained in the upright position. The work is carried out in the transported posture, and only the lightweight and small scraping device is moved up and down, so that the amount of scraping and the amount of scraping adapted to the condition of the ground can be easily and accurately adjusted.

Further, since the carrier is raised with the lifting device raised, the height of the leading end of the lifting device can be increased while suppressing the stroke of the actuator. Running and the like can be performed favorably. In addition, such an elevating operation can be accurately performed by one actuator, and the elevating mechanism can be manufactured at a low cost with a simple configuration.

According to the second aspect of the present invention, the scraping device can be movably supported on the conveyance body so as to be able to swing independently to the left and right along the slope of the ground surface or the uneven surface, and can be used for the slight unevenness of the ground. Also, it is possible to copy the soil sand and the like with good precision and good operation.

[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. 2A is a plan view of a scraping machine, and FIG. 2B is an enlarged rear view of the scraping device of FIG.

FIG. 3 is a side view showing a working state of the scraper and the unloader.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a plan view of the scraping device.

FIG. 6 is a plan view showing a support structure of the scraper.

FIG. 7 is a side view showing a main part of the scraping body.

FIG. 8A is a side view illustrating a configuration of a support mechanism and a lifting mechanism. (B) is a plane sectional view of the lifting rod.

FIG. 9A is a sectional view of a support mechanism. (B) is a sectional view of the lifting mechanism.

FIG. 10 is a side view showing the configuration of the transfer device.

FIG. 11 is a transmission path diagram of the scraper.

FIG. 12 is a plan view of the unloader.

FIG. 13 is a side view of the unloader.

FIG. 14 (A) is a plan view showing a work for scraping and carrying out dirty sand from a filtration pond according to another embodiment of the present invention. (B) is a perspective view showing each operation of (A).

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 scraping machine 1a scraping device 2 scraping machine 2a scraping transport device 2b scraping device 2c transport body 2F transport frame 2S actuator 2V transport belt 3 unloader 5 support mechanism 5F support frame 7 elevating mechanism 8 relay device 9 collision device Prevention device 31 Container 12, 61 Spiral body 20 Traveling machine body 22b Three-point link mechanism 50 Drive shaft (horizontal axis) 60a Raising body 61a Raping device W Soil W1 Ragging strip W2 Rubbing site K Filtration pond K2 Unloading device K3 Storage Location

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yukio Hosoda 560 Idaicho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 3 Inside Ryono Engineering Co., Ltd. 560-3 Hishino Engineering Co., Ltd. (72) Inventor Koji Koto 560-3 Ojiya-cho, Higashiizumo-cho, Yatsuka-gun, Shimane Pref. 3 Hishino Engineering Co., Ltd. No. 21 (72) Inventor Osamu Okamura 8-7-28 Kamedarijaku, Mitaka-shi, Tokyo (72) Inventor Shusuke Tanaka 6-4-9 Nagayama, Tama-shi, Tokyo

Claims (2)

[Claims] A scraping and conveying device comprising a scraping device and a carrier is provided on a support frame of the traveling machine so as to be vertically rotatable about an abscissa through an actuator, and the scraping device is mounted on the carrier. In a raking machine which can be lifted and lowered independently at the front end, the raking device is moved up and down by a primary operation of an actuator, and the raking device is maintained in an ascending posture by a secondary operation of the actuator, so that the carrier is integrally formed. A scraping and conveying device in a scraper for scraping sand or the like, which is moved up and down. 2. A scraping and conveying device in a scraping machine for soiling sand or the like according to claim 1, wherein the scraping device is supported on a transfer frame of a transfer body by a three-point link mechanism.