JPH1052605A - Sludge scraping apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sludge scraping apparatus capable of working easily with low cost by a considerably simplified structure of the apparatus. SOLUTION: This sludge scraping apparatus comprises a carrier 5 equipped with traveling wheels 7, (62) on a body 6, capable of traveling forward and backward in reciprocation along a bottom surface 2 where sludge is accumulated, a driving device capable of shifting positive or reverse rotation of traveling wheels 7, (62), mounted on the carrier 5 and composed of assembling a speed reducer 20 to a submergible motor 21, and a scraper 54 mounted on the carrier 5 so as to be capable of traveling up and down in linking with the driving device and shifting to a scraping posture for scraping up the sludge toward one direction after descent and to a returning posture for returning itself to the first position past over the sludge after ascent. The traveling wheels 7 are at least four wheels of all wheel drive type or the traveling wheels (62) are of a crawler type; the scraper 54 is of a swing type for swinging around a scraper shaft 37 as the center mounted sideways on the carrier 5, capable of traveling up and down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sludge scraping device for scraping and removing sludge accumulated on the bottom of a first or final settling pond.

[0002]

2. Description of the Related Art In a first or final sedimentation basin, a large amount of sediment accumulates on the bottom of the pond. Therefore, a sludge scraping device is constructed to scrape and remove these sludges. The sludge scraping device is provided with a reciprocating carrier, and a blade-like scraper is attached to the carrier so as to be vertical when scraping and horizontal when returning. This scraper is generally configured to switch before driving the carrier.

[0003]

By the way, in the conventional sludge scraper, a scraper is provided with a lever protruding upward, an intermediate portion of a wire rope is connected to this lever, and both ends of the wire rope are guided on a pond. By winding it around a drum of a driving device installed on a pond, the scraper was switched between a scraping position and a returning position, and the carrier was reciprocated.

[0004] With such a configuration, two driving devices are required, and the interlocking relationship between the driving device and the carrier side of the pond bottom is structurally complicated, so that the construction is difficult. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has as its object to reduce the cost and to simplify the construction very much by integrating the entire apparatus into one unit.

[0005]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 comprises a carrier provided with a traveling wheel capable of traveling back and forth along a bottom surface where sludge accumulates, and an underwater vehicle. A drive device that is configured by combining a motor with a speed reducer and is mounted on the carrier so that the running wheels can be switched between forward and reverse rotations; A scraper that can be switched between a scraping posture in which the scraper moves in a direction and a returning posture in which the sludge passes over the sludge and returns to its original position after ascending.

According to a second aspect of the present invention, in the first aspect, four or more running wheels are of an all-wheel drive type.

According to a third aspect of the present invention, in the first aspect, the traveling wheels are of a crawler type.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the scraper is capable of oscillating up and down about a scraper shaft laid on a carrier. Is reciprocally swingable through a clutch and a rotary / linear motion converter.

According to a fifth aspect of the present invention, in the fourth aspect, the carrier is provided with a waterproof casing, and the waterproof casing includes at least a traveling drive system from the driving device to the traveling wheels, and a driving system via a clutch. Thus, a scraper drive system that interlocks with the scraper shaft is surrounded.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, a guide rail is laid on the bottom surface, and the carrier is movable along the guide rail.

According to a seventh aspect of the present invention, in the fifth aspect, an air supply means communicates with the inside of the waterproof casing.

According to an eighth aspect of the present invention, in the fifth aspect, the driving device in the waterproof casing is capable of supplying and discharging oil on the pond.

According to a ninth aspect of the present invention, in the fifth aspect, a water purification means is provided outside the waterproof casing including the carrier.

According to a tenth aspect of the present invention, in the sixth aspect, the guide rail extends to the pond, and the carrier is movable along the guide rail.

In the eleventh aspect of the present invention, in the seventh aspect, the air supply means is connected to the air discharge means.

According to a twelfth aspect of the present invention, there is provided a carrier provided with a traveling wheel capable of traveling back and forth along a bottom surface in which sludge accumulates, and a raked posture in response to switching of the carrier back and forth. In a sludge scraping device including a scraper capable of being vertically switched to a non-scraping posture and a means for driving the carrier back and forth, the scraper is responsive to a uniquely mounted drive source. It is characterized by having.

According to a thirteenth aspect of the present invention, in the twelfth aspect, the carrier is driven forward and backward by a separate underwater motor for driving the scraper.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. 1 to 3 show an embodiment of the present invention. FIG. 1 is an overall longitudinal sectional view showing a case where a sludge scraping device according to the present invention is provided at the bottom of a settling pond, FIG. 2 is a front view thereof, and FIG. It is a top view.

In this case, the sedimentation basin has a rectangular shape. The sedimentation basin has a longitudinal side wall 1 and an end wall and a bottom wall 2 which are perpendicular to the longitudinal side wall 1. At the left end of the bottom wall 2 in FIG. 1, a pit into which sludge is dropped is formed, and a pump or pipe for sucking faces the pit so that the sludge can be removed.

As shown in FIG. 2, a pair of left and right guide rails 3 are laid at the center of the bottom wall 2 in the width direction.
The mortar 4 is installed at the same height. The guide rail 3 has a U-shape and is fixed and installed so that the grooves face in opposite directions. In addition, the guide rail 3
One end extends over the pit and the other end extends near the end wall opposite the bit.

Reference numeral 5 denotes a carrier. The carrier 5 also serves as a lower case of the waterproof casing. The carrier 5 has an airframe 6 and running wheels 7, and the airframe 6 has a rectangular flat saucer shape having five front, rear, left and right walls, and a bottom wall. Are protruded.

A front axle 10 and a rear axle 1 are provided before and after the body 6.
1 is rotatably mounted horizontally, and each axle 10, 11
Are completely waterproof and are protruded to the left and right sides via waterproof bearings 12 attached to the vehicle, and running wheels 7 are attached to each end. On the rear axle 11, two second and third sprockets 14 and 15, which are one of the driving drive systems, are arranged in parallel, and on the front axle 10, one fourth sprocket 16 is arranged. The third and fourth sprockets 15 and 16 are positioned in front and rear, with the second chain 17 interlocking between them.

A stand 19 projects horizontally from the left and right side walls of the body 6, and a completely waterproof underwater motor 21 with a coronet speed reducer 20 is reversibly rotatable via the stand 19. It is installed. The speed reducer 20 may be other than a coronet type. The drive units 20 and 21 are installed at the center between the widths of the fuselage 6 with the axis centered forward and backward, and the output shaft 22 from the speed reducer 20 projects rearward and upward slightly behind the longitudinal center of the fuselage 6. .

A worm gear type change mechanism 24 is formed on the output shaft 22 via a coupling 23.
Is converted from rotation about the front-rear direction to rotation about the left-right direction. Further, power is applied to the second sprocket 14 via the first sprocket 25 and the first chain 26 whose axes are oriented in the left-right direction. To be transmitted.
The change mechanism 24 to the fourth sprocket 16 constitute a traveling drive system.

Roller brackets 28 project downward from the right and left sides of the flange 8, and front and rear side rollers 29 and a retaining roller 30 between the front and rear are provided via these brackets 28.

Above the carrier 5, a waterproof casing upper case 32 forms a completely sealed space for water and sludge together with the machine body 6 by joining a flange 34 at a lower peripheral edge to the flange 8. The upper case 32 is provided with a vertical bracket 35 on both inner surfaces slightly rearward, and a waterproof bearing 36 is fixed to the bracket 35. Same bearing 36
A pair of pipes are disposed on the left and right, and a scraper shaft 37 made of a pipe, which extends greatly from the inside of the upper case 32 to the left and right, is rotatably supported via the bearing 36.

A cylindrical body 38 that rotates together with the scraper shaft 37 is mounted on the outer periphery of a shaft portion corresponding to the inside of the upper case 32 of the scraper shaft 37.
Each pair of interlocking levers 39 protrudes. The interlocking lever 39 forms a part of a scraper drive system. The scraper drive system further includes front and rear drive sprockets 41, 41 from the drive device via a clutch (electromagnetic clutch) 40.
41, and the sprockets 41, 41
The driven sprockets 43, 43 are respectively driven via a chain 42. The shaft 44 of the driving sprocket 41 has a rear portion supported by a bearing 45.

Each of the driven sprockets 43 has a pair of screw shafts 4 arranged on the left and right inside the upper case 32.
Each screw shaft 46 is rotatably supported by front and rear bearings 47. On the axis of the screw shaft 46, a female screw sleeve 48 which is screwed to the coaxial 46 and moves synchronously back and forth.
Is attached. The sleeve 48 and the downwardly extending interlocking lever 39 can be freely interlocked, so that when the clutch 40 is turned on, the screw shaft 46 is turned on.
Rotates with either one. These constitute a scraper drive system.

A pair of left and right suspension bolts 49 are disposed on the front and rear sides of the upper case 32, respectively, and a power distribution cord 50 for the drive unit and the clutch 40 is guided upward on the upper surface of the upper case 32. Code extraction part 5
1 is provided in a completely watertight manner.

A plurality of brackets 52 project left and right from the scraper shaft 37, and a blade 53 is attached via the brackets 52. A scraper 54 is mounted on the lower end of the blade 53. Since the scraper shaft 37 is long, the stay 55 extends from both sides of the upper case 32 for stable support of the coaxial 37, and is supported at the tip thereof.

The solid arrow X in FIG. 1 indicates the direction in which the settled sludge is raked in the direction of the pit, and the virtual arrow Y indicates the return direction. In the sludge scraping device, the blade 53 is held vertically at the end in the direction of the imaginary arrow Y, and the sludge is brought into the scraping posture. In this state, the driving device is driven to rotate in one direction,
First sprocket 25 → first chain 26 → second sprocket 14 via worm gear type change mechanism 24 →
The third sprocket 15 is driven in the order of the second chain 17 and the fourth sprocket. Thus, the front and rear running wheels 7
Are simultaneously driven to be in the all-wheel drive state, and the solid arrow X
The device advances in the direction of. As the process proceeds, the scraper 54 scrapes the settled sludge in the direction of the solid arrow X.

When the scraper 54 reaches the pit and goes over a certain amount to drop the sludge which has been scraped into the pit, the clutch 40 is turned on, and the output shaft 22 → the clutch 40 → the shaft 44 → the driving sprocket 41 → the chain 4
2 → driven sprocket 43 → screw shaft 46 → female screw sleeve 48 → interlocking lever 39, and the scraper shaft 37 is rotated, and the blade 53 is lifted to a horizontal return position. After the blade 53 is lifted, the output shaft 22 of the driving device is switched to the reverse rotation. At this time, the clutch 40 is turned off and only the traveling wheel 7 is driven in the reverse rotation direction. In this return position,
Since the female screw sleeve 48 and the screw shaft 46 are screwed together, the female screw sleeve 48 is locked and the blade 53 is kept horizontal.

With the scraper 54 raised, the sludge scraping device immediately before returning to the end of the direction of the imaginary arrow Y in FIG.
The clutch 40 is turned on, and the output shaft 22 → the clutch 40
→ The shaft 44 → the drive side sprocket 41 → the chain 42 → the driven side sprocket 43 → the screw shaft 46 → the female screw sleeve 48 → the interlocking lever 39 are driven in the reverse rotation direction to the scraping direction to rotate the scraper shaft 37. ,
When the blade 53 is lowered, the blade 53 is brought into the scraping posture as shown by the solid line in FIG. Also in this case, the female screw sleeve 48 and the screw shaft 46 are screwed and locked, and the blade 53 is kept vertical.

When the scraper 54 is in the scraping position, the clutch 40 is turned off, and the driving force to the scraper is in a disconnected state.
Are driven in the direction of the solid arrow X in FIG.

The traveling wheel 7 may be of a crawler type. In this case, the crawler 62 uses metal, resin, synthetic rubber, or the like. FIG. 4 and FIG. 5 show the embodiment, and the configuration of the drive device and the like in the upper case 32 of the waterproof casing can be configured in the same manner as in the above embodiment. Power is transmitted to the rear axle 11. A rear sprocket 60 is attached to both ends of the rear axle 11, and a front sprocket 61 is attached to both ends of the front axle 10. The rear sprocket 60 and the front sprocket 61 may be grooved sprockets corresponding to a timing belt, and the crawler 62 may be a timing belt type. In this case, the outer circumference of the crawler 62 may be a flat surface or may have irregularities such as a lateral groove. The crawler 62 may be formed of an integral endless transmission member of rubber or the like, or may be of a chain type made of stainless steel or the like. In the case of a chain type, it may be a chain.

Here, only the rear axle 11 is driven, and the front axle 10 is not driven by a chain as in the above-described embodiment, but is driven synchronously by a pair of crawlers 62 spanning left and right. still,
The front axle 10 may also be driven by a chain as in the above-described embodiment to drive the crawler 62 back and forth.

The embodiment shown in FIGS. 1 to 3, the embodiments shown in FIGS. 4 and 5, and the embodiment shown in FIG. 6 (hereinafter referred to as all embodiments) can be adopted. As shown in FIG. 5, the blade 53 and the scraper 54 may be located between the front and rear of the apparatus. In this case, the scraper shaft 37 is set higher than the output shaft 22 as shown in FIG. 1, or set lower as shown in FIG. Further, a central scraper 63 for scraping the sludge on the mortar 4 (see FIG. 2) may be provided at the front end of the apparatus (or at the bottom of the apparatus).

Although it can be adopted in all the embodiments, a water purifying means 65 may be provided along the periphery of the upper case 32 (from the front surface to the rear surface via the upper surface). The water purifying means 65 is put in a storage unit made of a net or a perforated plate that can be freely opened and closed, and is, for example, a contact material such as barley stone, bio, or the like. Good. The water purifying means 65 can be exchanged by floating the device up to a pond along a climbing rail 3a which is an extension of the guide rail 3 as shown in FIG. 7 or FIG.

Although applicable to all embodiments, the flexible tube 66 guided from the cord take-out portion 51 to pass through the power distribution cord 50 is provided with a guide (wire rope or the like) 67 that runs vertically in the pond as shown in FIG. The flexible tube 66 (which may be provided with a protective tube on the outer periphery) includes, in addition to the electric system,
It is possible to pass a tube for exchanging oil in the drive device, a tube for supplying air into the waterproof casing, and the like. The air supply in this case also has a waterproof function. Further, a tube for discharging the supplied air can be passed. A chamber having an accumulator function may be formed in the waterproof casing, or the accumulator may be provided in the middle of the air pipe. The supplied air may be discharged into a pond outside the waterproof casing to perform aeration. The aeration is preferably increased as fine particles.

Although it can be adopted in all the embodiments, a sensor box 69 may be provided as shown in FIG.
The box 69 is equipped with one or an appropriate combination of a water quality sensor, a transparency sensor, a device position sensor, and the like, and can be detected on a pond via a flexible tube 66.

As shown in FIG. 7, the guide rail 3 is inclined upward by 60 ° or 45 °.
a may be provided continuously, and the apparatus may be arranged to reach above the climbing pond when returning in the Y direction in FIG. 1 or after being swept in the X direction in FIG. This climbing rail 3a
Is integrated with the guide rail 3 (including a separate body connection type), but usually stands by on a pond or the like separately, but is configured to be lowered and connected to the guide rail 3 as necessary. There is also.

FIG. 7 shows an apparatus using the crawler 62.
As shown in FIG. 8, the present invention can be similarly carried out even with a roller type traveling wheel 7. In these cases, since the retaining roller 30 between the front and rear in FIG. 1 is omitted, it is possible to move up and down without any trouble. In these cases, if the gap between the crawler 62 and the retaining roller 30 is made larger than the flange thickness of the guide rail 3, the crawler 62 and the retaining roller 30 will not be caught by the flange of the R portion 3b. As shown in FIG. 7, if the center of the retaining roller 30 is shifted forward with respect to the front axle 10 and the retaining roller 30 is shifted rearward with respect to the rear axle 11, there is no obstacle to the running without the above-mentioned pinching. . This is the same in the case of FIG.

In addition, as shown in FIGS. 4 and 6, even if the front axle 10 or the rear axle 11 and the center of the retaining roller 30 are aligned in the front-rear direction, for example, However, if it is lower than the lower surface of the flange of the guide rail 3 by a certain amount or more, the above-mentioned pinching does not occur. Further, the outer periphery or the entirety of the retaining roller 30 may be made of rubber.

The traveling wheels 7 may be two in front and rear. In this case, all-wheel drive or only one of the front and rear sides can be set as the drive side.

In the above-described embodiment of the four-wheel system, the traveling wheel 7 may be a two-wheel drive system. In the above embodiment, a scraper may be provided before or after to remove sludge between the guide rails 3.

The running wheel 7 may be provided with a groove on the outer periphery in order to prevent slippage between the running wheel 7 and the guide rail 3, and for example, a gear may be used. In addition, running wheel 7
Can be made entirely of rubber or only part of the outer periphery.

The guide rail 3 is composed of two rails which are separated from each other in the above embodiment.
Regardless of the cross-sectional shape of the rail, a single rail may be installed at the center or side of the pond. In the case of a single book, the cross section is a box shape, or a grooved shape is back to back,
May be an I-beam.

In the illustrated embodiment, the total weight of the apparatus on the ground is 900 kg, but it becomes 450 kg at the pond bottom due to the presence of the waterproof casing. Further, an elastic material may be interposed between the traveling wheel 7 and the axle or between the axle and the bearing.

In the embodiment shown in FIGS. 9 to 12, a scraper lift drive source is provided in addition to the drive source of the traveling system.
This is a structurally simplified drive system of the scraper.

In these figures, reference numeral 70 denotes a guide rail, which is a pair of right and left U-shaped channel members spaced apart from each other so that the grooves face in opposite directions. The guide rail 70 is fixed to both sides of a protrusion 72 integrally formed in a bulging shape on the bottom surface of the sedimentation basin 71, and is provided along the longitudinal direction of the sedimentation basin 71.

It is to be noted that the projecting portion 72 can be eliminated and replaced with a horizontal connecting plate or connecting member (H-shaped channel material, mouth-shaped channel material, etc.) for connecting the guide rails 70. The guide rails 70 may be formed of bolts and nuts with their axes oriented in the horizontal direction.

Further, a method may be adopted in which the guide rail is constituted only by the left and right guide rails 70 and is fixed to the bottom wall with a fastener. Further, the guide rail may be constituted by a single H-shaped channel or a plurality of H-shaped channels. The groove in this case is a portion where a later-described side roller or the like rolls. Further, the guide rail may be formed by forming a U-shaped or U-shaped channel material with its groove facing upward. In this case, one or more pairs of running wheels are formed before and after rolling in the groove.

The carrier 73 of the sludge scraping device includes an airframe 74.
The airframe 74 has a pair of left and right side plates 75 and is connected to the side plates 75 to form an integral frame. A front / rear axle 77 is rotatably mounted on the front and rear sides of the body 74, and a pair of left and right running wheels 78 is provided on each of the axles 77.

The running wheel 78 is configured to roll on the guide rail 70 via a receiving plate 79 and to move forward and backward.
Interlocking sprockets 80 and 81 are attached to the rear axle 77, respectively, and a driving force is transmitted from the front axle 77 to the rear axle 77 by an interlocking chain 82 bridged therebetween.

A gantry 84 is fixed to the upper surface of the body 74,
A driving source for traveling (with a speed reducer) 85 is installed at a front part on the gantry 84, and an output shaft protrudes to the left side of the body 74. A driving sprocket 86 for traveling is provided on this output shaft, and a driven sprocket 87 for traveling is provided at the left end of the front axle 77, and these sprockets 86, 8 are provided.
Rotational force is transmitted from the drive source 85 to the front axle 77 by the chain 88 hung between the wheels 7, and the rotational drive force of the front axle 77 is transmitted to the rear axle 77 via the chain 82 and the front axle 77 and the rear The axle 77 rotates synchronously.

The rotation of the drive source 85 is controlled in the forward and reverse directions through a cord to a control panel on the pond. When the device moves forward in the X direction in FIG. 1, the traveling wheel 78 rotates in the counterclockwise direction, and when the device retracts in the Y direction in FIG.

Reference numeral 90 denotes a roller bracket. The bracket 90 is vertically suspended in a pair at each of the front and rear sides of the machine body 74. At each lower end of the roller bracket 90, a side roller 91 is attached, and a groove of the guide rail 70 is formed. It is rotatably facing so as to prevent the device from swaying from side to side.

As a mechanism for preventing the body 74 from being pulled out upward, a lifting prevention mechanism 93 is provided on the left and right sides of the body 74. The lifting prevention mechanism 93 includes a body 74
The swing arm 9 is attached to the swing fulcrum shaft 94 protruding from the lateral side of the
5 is rotatably supported, and the swing arm 95
A roller mounting body 97 is suspended from a pull-up shaft 96 provided at one end of the rear end, and a lift prevention roller 9 is provided at the lower end thereof.
8 on the upper flange surface in the guide rail 70.
As shown in Fig. 2, it is faced from below.

On the other hand, a weight 99 is provided at the front end of the swing arm 95 so that its weight is applied as a large force to the lift prevention roller 98 by the boosting action of the swing arm 95. The roller 98 always hits the guide rail 70. Conversely, the running wheel 78 is always pressed onto the guide rail 70 so that the running wheel 78 can roll without slipping. Since the swing arm 95 supports the lever using a lever, the force acting on the roller 98 is increased even with a light weight 99, so that the running stability is ensured while reducing the weight of the device. Become.

Reference numeral 101 denotes a scraper driving source (with a speed reducer).
Can be switched between a vertical scraping (forward) state and a horizontal non-scraping (retreat) state.

A mounting body 104 is formed by a U-shaped channel or the like from the left and right sides of the rear of the body 74.
The bearing 105 is attached via each outer surface of the reference numeral 04. One rotating shaft 106 is rotatably mounted horizontally via these bearings 105.

At both ends of the rotating shaft 106, a flange 10
7, and a scraper shaft 108 is detachably mounted on the flange body 109 via the flange body 107. The scraper shaft 108 extends horizontally outward, and a scraper main body 110 is attached to the scraper shaft 108 via connecting plates 109. This body 1
As shown in FIGS. 10 and 11, a pair of right and left 10 are provided apart from each other.

The scraper main body 110 is a saucer-like shape having a reinforcing rib 111 on the outer periphery of one wide rectangular plate, but may be a hollow shape. At the lower end of the scraper main body 110, a scraper plate (made of urethane rubber or the like) 112 for scraping the sludge is mounted.

In order to move the scraper 102 up and down, the scraper drive source 101 is mounted so that its output shaft protrudes to the right (or left) of the body 74.
The output shaft includes a first sprocket 114,
Bearings 116 are provided on support plates 115 erected on the left and right sides of the base 84.
A second sprocket 118 is provided at the right end of the intermediate shaft 117 laid horizontally through the first shaft 117, a first chain 119 is hung between the two sprockets 114 and 118, and a third sprocket 120 provided at another portion of the intermediate shaft 117 is provided. And the rotating shaft 1
The second chain 122 extends between the fourth sprocket 121 around the 06.

When the output shaft of the scraper driving source 101 rotates to one side, the rotation shaft 106 rotates through the first chain 119 and the second chain 122, and the scraper 102 is rotated until it becomes vertical. By rotating the output shaft to the other side, the scraper 102 is lifted from the vertical state and raised until it becomes horizontal.

The vertical and horizontal states correspond to the rotation axis 10
Limit switches 124 and 12 arranged corresponding to around 6
The control is performed by stopping the drive source 101 via the control panel by the control unit 4. Reference numeral 126 denotes a limit switch for switching from forward to backward, and 127 denotes a limit switch for switching from backward to forward. These switches are completely waterproof.

Reference numeral 130 denotes a supporting beam, and the supporting beam 13
Numeral 0 extends right and left through the mounting body 104 as shown in FIG. 10, and each end rotatably supports the scraper shaft 108. On the support beam 130, a column (not shown) provided with a scum scraping scraper for scraping scum floating on the surface of the water is detachably provided via a column mounting plate 131.

As shown in FIG. 9, a central scraper 133 for scraping the sludge collected on the protruding portion 72 is attached to the front end of the body 74 by urethane rubber or the like.
Further, as shown by phantom lines in FIGS.
4 may be provided with an upper case 135, and the case 135 may be completely waterproof. Reference numeral 136 denotes an outlet for various codes.

FIGS. 9 to 11 show a state in which the scraper 102 is moving forward in a scraping state. The scraper 102 is vertical and the scraper driving source 101 is stopped, so that the scraper 102 can be lifted even if a load is applied from the sludge side. There is no. By rotating the driving source 85 for driving in this state, the front and rear running wheels 78 roll on the guide rail 70 in the direction of arrow X in FIG.

When the apparatus comes over the pit (not shown) at the left end in FIG. 9, the sludge scraped by the scraper 102 is dropped into the pit, and then driven via the forward / backward switching limit switch 126. When the source 85 is reversed, the device is switched to the retracted position. At this time, the scraper driving source 101 is rotationally driven in the direction opposite to the direction at the time of the forward switching, whereby the scraper 102 is lifted as shown by the phantom line in FIG. This limit is detected by the limit switch 124 and the drive source 101 is stopped.
As a result, the scraper 102 retreats while being lifted, and moves backward without scraping back the sludge. When the backward limit is reached, the drive source 85 for traveling reversely rotates by the operation of the reverse-to-forward switching switch 127, and the scraper driving source 101 also reversely rotates, so that the scraper 102 becomes vertical and the apparatus advances. As a result, the sludge is prepared for scraping. In the embodiments shown in FIGS. 9 to 12, the traveling drive source may be freely driven to move forward and backward by a transmission means such as a wire rope that reciprocates in parallel on the guide rail.

FIG. 13 shows that the sludge scraping device is the guide rail 1.
When moving back and forth above 40, the vehicle repeatedly moves back and forth as one cycle from the R position to the F position and back to the R position again. In particular, it also returns at an appropriate position M while returning from the F position to the R position. The cycle from the R position to the F position, a plurality of reciprocations, for example, three reciprocations, and the return to the R position can be made as one cycle.

The guide rail 140 is shown in FIGS.
Is substantially the same as the embodiment shown in FIG. On this guide rail 140, a pair of front and rear running wheels 141 is provided.
The body 142 can move forward and backward via the...

The machine body 142 includes a drive source 14 with a speed reducer.
The front and rear wheels 3 can be driven forward / reverse by transmission means such as a chain. The advance and retreat of the airframe 142 may be performed by reciprocating transmission means such as a wire rope or a chain as described above. A scraper fulcrum 144 is provided on the rear upper side of the body 142, and the scraper 145 is supported on the fulcrum 144 so as to reciprocate vertically and horizontally.

The scraper 145 is provided with a weight 146 so as to completely balance the weight around the scraper fulcrum 144 and reciprocates very lightly. Of course, the scraper 145 may be of a hollow type and may be balanced with its own weight. A fixed support point 148 is provided between the front and rear of the body 142, and a lever 149 is attached to the support point 148 so as to be able to swing back and forth.

The front connecting shaft 15 at the upper end of the lever 149
An interlocking link 152 is connected between 0 and the rear connection shaft 151 on the scraper 145 side. Lever 149
Extends downward from the fixed fulcrum 148, and at the lower end thereof, a deformable member 153 such as a chain, a link chain, or a wire rope hangs down.
The member 153 may be a single member, but one pair or three or more members have directional stability. Same deformable member 153
A roller 154 having a weight and capable of rolling on the guide rail 140 is attached to the lower end.

Incidentally, a riding cam projecting upward may be provided on the guide rail 140. For example, an L-shaped channel material may be fixed with its peak facing upward so as to cross the guide rail 140. Further, a member having a triangular cross section may be installed across the guide rail 140 such that an inclined surface is on the right side and a vertical surface is on the right side in FIG. The installation locations are R, F, and, if necessary, M points.

The state shown by the solid line on the right side of FIG. That is, the body 142 moves in the direction of the arrow, and at the same time, the roller 154 rolls on the guide rail 140, and the scraper 145 keeps the vertical state by the force to scrape the sludge. Equipment is pit 1
When it reaches above 55, the sludge that has come
It is dropped inside. In this case, the sludge collected on the guide rail 140 and scraped by another scraper in front of the machine body 142 may be simultaneously dropped by the bottom hole at the tip of the guide rail 140. Further, the sludge may be dropped through the tip of the guide rail 140.

When the apparatus comes to the F position, the driving source 143 rotates in the reverse direction, and the body 142 is driven in the F direction from the F position. At this time, only the roller 154 is left on the guide rail 140, and the deformable member 153 starts pulling the remaining roller 154 when the body 142 returns to a constant state, and the force generated at this time acts on the lever 149. The lever 149 is rotated clockwise in FIG. The scraper 145 is pushed out in the return direction from the lever 149 via the interlocking link 152, whereby the scraper 145 is lifted.

When the fuselage 142 returns to the R position with the scraper 145 raised, the drive source 14
When the roller 3 is rotated in the reverse direction, the roller 154 is left as it is. After a predetermined time, the roller 154 is pulled by the body 142 via the deformable member 153, so that the scraper 145 is interlocked with the vertical scraping posture. Scraper 145
Operates very lightly due to the weight 146.

In the sedimentation basin, the amount of sludge settled on the pit 155 side because the sewage is supplied from the upper left of FIG. Then, it is required to perform a special operation such as moving forward to the F position and repeatedly reciprocating between F and M again. In this case, with this device, when the device returning from the F position comes to the M position, the drive source 143 is driven to rotate in the reverse direction to switch to the forward direction, and at the same time, the scraper 145 needs to be switched to the vertical scraping position. . This operation is shown in FIG.
The switching from the state shown by the virtual line to the state shown by the solid line at the left end can be freely performed.

The roller 154 may be supported with a slight rotation resistance with respect to its rotation axis. The outer circumference of the roller 154 may be polygonal.

[0082]

Since the present invention is configured as described above, the whole apparatus is integrated into one unit, so that the cost is reduced and the construction is very simplified.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a sludge scraping device according to an embodiment of the present invention.

FIG. 2 is a front view of FIG. 1;

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

FIG. 4 is a side view showing a sludge scraping device according to another embodiment.

FIG. 5 is a front view of the device of FIG. 4;

FIG. 6 is a side view showing a sludge scraping device according to another embodiment.

FIG. 7 is a side view showing an embodiment in which the device is moved up and down on a climbing rail.

FIG. 8 is a side view showing another embodiment for moving the device up and down on a climbing rail.

FIG. 9 is a side view showing another sludge scraping device.

FIG. 10 is a sectional view taken along line PP of FIG. 9;

FIG. 11 is a cross-sectional plan view of the device of FIG. 9;

FIG. 12 is a sectional view taken along the line SS in FIG. 9;

FIG. 13 is a side view showing another sludge scraping device.

[Explanation of symbols]

2 ... bottom wall (bottom surface) 3 ... guide rail 3a ... climbing rail 5 ... carrier 6 ... body 7 ... running wheel 20 ... reduction gear 21 ... submersible motor 22 ... output shaft 24 ... worm gear change mechanism (rotary / linear motion conversion device) 32
... upper case 37 ... scraper shaft 40 ... clutch 54 ... scraper 62 ... crawler 65 ... water purification means.

Claims (13)

[Claims] 1. A carrier provided with a traveling wheel capable of traveling back and forth along a bottom surface where sludge collects, and a reduction gear combined with a submersible motor. The traveling wheel is mounted on the carrier to correct the traveling wheel. A drive device capable of reverse rotation switching, and mounted on a carrier so as to be able to move up and down in conjunction with the drive device, a scraping posture for scraping the sludge in one direction after descending, and an original position after passing over the sludge after ascending And a scraper that can be switched to a return position. 2. The sludge scraping device according to claim 1, wherein four or more running wheels are of an all-wheel drive type. 3. The sludge scraping device according to claim 1, wherein the traveling wheel is of a crawler type. 4. A scraper according to any one of claims 1 to 3, wherein the scraper is capable of swinging up and down about a scraper shaft transversely mounted on a carrier, and receives power from an output shaft of a driving device through a clutch and a clutch. Sludge scraping device that is configured to be able to swing back and forth via a rotation / linear motion conversion device. 5. The waterproof casing as defined in claim 4, wherein the waterproof casing cooperates at least with a traveling drive system from the driving device to the traveling wheels and a scraper shaft from the driving device via a clutch. A sludge scraper that surrounds the scraper drive system. 6. A sludge scraping apparatus according to claim 1, wherein a guide rail is laid on a bottom surface, and the carrier is movable along the guide rail. 7. The sludge scraper according to claim 5, wherein an air supply means communicates with the inside of the waterproof casing. 8. The sludge scraping device according to claim 5, wherein the drive device in the waterproof casing is capable of supplying and discharging oil on the pond. 9. The sludge scraping device according to claim 5, wherein a water purification means is provided outside the waterproof casing including the carrier. 10. The guide rail according to claim 6, wherein:
Sludge scraping device that leads to Ikegami and allows the carrier to move back and forth along the guide rail. 11. The sludge scraper according to claim 7, wherein the air supply means communicates with the air discharge means. 12. A carrier provided with running wheels capable of traveling back and forth along a bottom surface where sludge accumulates, and a carriage position and a non-scraping position in accordance with switching of the carrier back and forth. In a sludge scraping device comprising a scraper capable of switching up and down and a means for driving the carrier back and forth, the scraper is responsive to a uniquely mounted drive source. Sludge scraping device. 13. The sludge scraping device according to claim 12, wherein the carrier is driven forward and backward by another underwater motor different from the one for driving the scraper.