JP3509950B2 - A traveling dust remover equipped with a body levitation turning mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a generator for a hydroelectric power plant.
Captured by a screen bar placed at the water intake, etc.
Related to a dust remover that scoops up and removes dust
You. More specifically, a traveling dust remover equipped with traveling wheels
In addition, it has a function to levitate and turn the dust remover body,
Dust collected inside can be easily discharged to the designated place
About what you did. 2. Description of the Related Art Water intake for generators of hydroelectric power plants and the like
Etc. to capture dust contained in the incoming water
, A screen bar is arranged. And this
A dust remover is used to remove dust trapped in the clean bar.
used. Dust removers other than those that are fixedly arranged
In addition, a traveling type equipped with traveling wheels is known. [0003] This traveling type dust remover has a rail or a railless rail.
Or stop at any position.
There is a type of running at intervals. Any type of traveling dust removal
Machine, stop at a predetermined position and
Raise and lower the rake along the surface of the
Scoop up dust that is removed. Leh
The dust that has been scooped up by the
The bell that collects in the bucket
It can be discharged to the outside by a conveyor
You. [0004] However, the conventional
The dust remover has the following problems. That is,
The collected dust in the bucket inside the dust remover body is
It is possible to discharge to the outside by the carrier.
Dust is discharged to the external target location by the belt conveyor
Can be difficult to do. For example, the height of the discharge location
If the discharge location is higher than the belt conveyor,
If it is not in the direction of dust discharge by the conveyor,
Or use another power machine to discharge the dust.
I need it. An object of the present invention is to solve such problems.
Lift and swivel the dust remover body to
Dust in the desired direction at a height
It is an object of the present invention to propose a traveling type dust remover capable of performing the following. [0006] The present invention has been made to solve the above-mentioned problems.
For this purpose, the present invention includes a front traveling wheel and a rear traveling wheel.
Along the screen bar installed in irrigation canals, etc.
Raise and lower the rake and scoop the dust caught on the screen
The following configuration is adopted for the traveling dust remover that lifts and removes
So that the body of the dust remover can be lifted and turned.
I have. That is, the second wheel supported by the rear wheels
1 frame, and the front and rear sides of the vehicle are for turning
While being supported by front wheels and turning rear wheels,
The part including the turning rear wheel rides on the first gantry.
The second base is raised and the front wheels are
And the rear side is turned by the turning rear wheel.
A configuration including a supported vehicle body is employed. Ma
Turn the vehicle up and down around the axle of the rear wheel for turning
By doing so, the front side of the vehicle body is
Switch to the supported state and the floating state supported by the second stand.
The levitation mechanism to be replaced and the levitation mechanism
And the second mount is moved around the axle line of the rear wheel for turning.
Turn in the opposite direction to the turning direction of the body by the body levitation mechanism
The front side of the gantry is supported by the turning front wheel
To switch between the suspended state and the floating state supported by the car body
A configuration having a repurposed wheel levitation mechanism is adopted. Further
In the, the body that has been levitated by the body levitation mechanism,
With the position on the axle line of the turning rear wheel as the turning center, the vehicle width direction
A structure having a turning mechanism for turning in the opposite direction is employed. [0007] In the normal running state, or in the dust scooping state
, A first frame, a second frame, and a dust remover body
The traveling type dust remover, consisting of
And are supported by the rear wheels. In other words, traveling dust removal
On the front side of the aircraft, the front wheels for running
After landing, the second gantry is supported by the vehicle body, and the turning front wheel is
In a state of ascent. On the rear side, the vehicle body and the second
The first gantry supporting the platform is supported by the rear wheels for traveling.
Is held. Therefore, one of the front and rear wheels
By driving, the traveling dust remover can travel. In this state, using the vehicle body levitation mechanism
When the front side of the vehicle body is levitated, the front wheels for traveling rise,
The front side of the vehicle body is supported by the second gantry.
You. At this time, the wheel for turning is lifted in conjunction with this floating operation.
The mechanism causes the second gantry to pivot downward,
The mounted front wheel for turning is landed. I
Therefore, if the turning mechanism is driven in this state, the second
The gantry pivots at the rear axle position of the rear turning wheel.
As a center, it can be turned sideways (vehicle width direction)
Wear. Here, change the flying height of the vehicle body by the vehicle levitation mechanism.
Can change the height of the turning car body.
it can. In addition, to change the amount of turning by the turning mechanism
Thus, the turning position of the vehicle body can be changed. Hope
Dust can be discharged at the height and in the desired direction
it can. Embodiments of the present invention will be described below with reference to the drawings.
explain. (Overall Configuration) FIGS. 1 and 2 show the present invention.
1 shows the overall configuration of the embodiment. Traveling dust remover of this example
1 is located in the generator water intake 2 of the hydroelectric power plant
Scoop up and remove the dust trapped on the screen bar 3
It is for doing. The dust remover 1 of this embodiment is of a traveling type,
A dust remover body 4 attached to each running wheel, and a screen
Rake (rake device) to scoop up dust from member 3
5 and support the rake 5 to perform operations such as lifting and lowering.
It is basically composed of a supporting mechanism 6. On the body 4
Has a bucket 4a for storing the scooped dust
Have been. This bottom part is defined by the conveyor 4b.
The dust collected here is collected by the conveyor 4b.
Can be discharged to the outside. (Structure of the dust remover body) Referring to FIGS.
The configuration of the dust remover main body 4 in this example will be described. First, as shown in FIGS. 3A and 3B,
The dust remover main body 4 includes a first mount 41 and a second mount 42.
And a box-shaped vehicle body 43 having a driver's seat 43A at the rear end.
It is basically configured. The first gantry 41
After the two sets of running, spaced apart in the front-rear direction
Supported by wheels 44R, 44L and 45R, 45L
Have been. On the axle 451 of the rear wheels 45R and 45L,
Rotated from the traveling motor 453 via the speed reduction mechanism 452
Is transmitted. The second mount 42 is
The front and rear sides of the vehicle body are front turning wheels 46, respectively.
R, 46L and turning rear wheels 47R, 47L.
Is held. The rear portion of the second base 42 is
I was riding on the upper surface of one of the pedestals 41
The rear end of the part is the axle 47A of the turning rear wheels 47R, 47L.
Are rotatably connected to the On the other hand, the vehicle body 43 has
Protruded downward from the front position from the middle of the rear direction
The support bracket 48a is attached in this state, and
The pair of left and right running front wheels 48R and 48L are rotatably
It is attached. These running front wheels 48R and 48L are located
So that it does not interfere with the second frame 42
Has an opening 42a. The rear side of the vehicle body 43
, The axle support bracket 47a
And the rear wheels 47R and 47L for turning
It is mounted so that it can rotate around the axle line 47A.
You. Next, between the vehicle body 43 and the second gantry 42
Consists of a levitation mechanism for the body and a levitation mechanism for the front wheels for turning.
Have been. As shown in FIG. 3, the second mount 42 includes
Floating drive cylinder 40 substantially horizontally in the front-rear direction
1 and the rear end thereof is attached to the gantry 42.
You. The tip of the operating rod 402 on the front side of the cylinder 401
At the end, a carriage 404 on which a floating drive roller 403 is mounted
Are connected. This cart 404 is one set before and after
Supported by a total of four rotatable wheels 405
A frame 406 is provided.
Therefore, the roller 403 is centered on a rotation shaft extending left and right.
It is rotatably supported. By driving the cylinder 401
By expanding and contracting the operating rod 402, the carriage 404
Can be moved back and forth. Here, the wheels 405 of the carriage 404 roll.
The surface 42b of the second gantry 42 is flat and flat.
I have. On the other hand, the roller 403 of the carriage 401 rolls
The shape of the rear surface 43b of the vehicle body 43 is
It has a shape cross section. Therefore, the movement of the carriage 401
As a result, the roller 403 moves to the flat top surface 43
Rolling from c along the inclined surface 43d. On the other hand, a position adjacent to the rear surface 43b of the vehicle body 43
The support bracket 407 attached to the vehicle body
The L-shaped lever 408 is centered around the bent part.
It is supported so as to be able to turn. To this lever 408
The lower end of the arm extending downward is provided with an engaging roller 4.
09 is rotatably mounted. Also, lever 40
8 are connected to the connecting bar 410 at the tip of the horizontally extending arm.
Is connected to the second carriage 42. here,
At the rear end of the carriage 401, an engaging row for this lever is provided.
An engagement plate 411 that can be engaged with the
You. Next, referring also to FIG.
The turning mechanism for turning will be described. Turn the vehicle body 43 sideways
The turning center 420 for turning is provided by turning rear wheels 47R, 4R.
The center bearing 421 arranged at the center in the vehicle width direction of 7L
It is prescribed. This center bearing 421 is
It is fixed to the upper surface of the carriage 41. On the first carriage 41
Movement of the left and right turning rear wheels 47R, 47L on the surface 41a.
An arc-shaped rolling surface is formed over the range. On the other hand, it is attached to the front side of the second
The turning front wheels 46R and 46L are separated from FIG.
As described above, the directions of the axles are aligned with the turning center 4 described above.
It is arranged to face 20. Before these turns
The right front wheel 46R of the wheels is a driving wheel, and is a turning model.
The rotation of the motor 422 is transmitted via the speed reduction mechanism.
It has become. (Levitating and Swinging Operation of Dust Remover Body)
Floating of the vehicle body 43 in the constructed traveling type dust remover 1 of this example
The upward turning operation will be described. In a normal state, the vehicle body 4
3 has a front side supported by running front wheels 48R and 48L.
The rear side includes turning rear wheels 47R, 47L and the first
With the rear wheels 45R and 45L for traveling through the carriage 41
Supported. In addition, the 2nd stand rises from the ground
Therefore, it is supported on the back side of the vehicle body 43, and accordingly
Thus, the turning front wheels 46R and 46L are in a floating state. When the vehicle turns up and down, it is in this state.
By driving the flying drive cylinder 401,
The cart 404 located between the second carts 42 is moved forward.
Extrude. When the bogie 404 is pushed forward,
The mounted levitation drive roller 403 is mounted on the rear surface 43 of the vehicle.
The roller b rolls from the inclined surface 43d toward the flat surface 43c.
As a result, the vehicle body 43 and the second gantry 42
It is pushed up and down with the axle line 47A as the turning center,
A turning front wheel 46 arranged at the front end of the second mount 42
R, 46L lands. Conversely, the front wheels 48 for traveling
Rises from the traveling road surface G. As a result, the vehicle body 43
State supported on second gantry 42 via carriage 404
become. FIG. 3B shows this state. After the vehicle body 43 is levitated,
Drive the rotation motor 422 to rotate the turning front wheel 46R.
Let it. As a result, as shown in FIG.
420 and a second frame and
Vehicle turns sideways. After the levitation swing, the normal state
When returning to the state, the operation opposite to the above is performed. sand
That is, the second gantry 42 and the vehicle body 43 are
Turn around 0 and return to the original position. next,
By driving the drive cylinder 401, the carriage 404 is pulled backward.
Good. As a result, the body 43 that has floated down descends,
The running front wheel 48 lands. Here, the truck 404 is
Plywood 411 is attached, and when the bogie moves backward,
The engaging plate 411 of the lever contacts the engaging roller 409 of the lever 408.
Or pivot the lever 408 backward. Lever 408
Is connected to the second base 42 via the connection bar 410
Have been. Therefore, the lever 408 pivots backward.
Then, the second gantry 42 is raised and the turning front wheel 4
6R and 46L float up to the floating state. This result
As a result, the main body of the dust remover returns to the normal running state. (Rake support mechanism) Next, referring to FIGS.
In comparison, the structure of other parts in the traveling type dust remover 1 of the present embodiment
Will be described. The rake support mechanism 6 of the present embodiment has a pair of
Existing left and right arms 11, 12 and a pair of left and right wires
Ropes 13 and 14. The left arm 11
An arm guide 111 forming the upper end thereof;
Is mounted inside the arm guide 111 of
Upper and lower arms 112 that are extendable and contractible
Intermediate arm attached to the lower end of the arm
113 and attachable to this arm from the lower end
This is composed of a tip arm 114 which is
The distal end of the distal end arm 114 is connected via a universal joint 15
And the rake 7 is connected. The same applies to the right arm 12
Arm guide 121, upper end arm 122, middle arm
The arm 123 and the tip arm 124
Is connected to the rake 5 via a universal joint 16.
You. The left and right arms 11 and 12 are arm swingers.
It is supported on the side of the dust remover body 4 via the structure 7. This
The arm swing mechanism 7 has an arm guide 11 for each arm.
Swing arms 71, 72 supporting 1, 121
And defines the center of rotation of these swing arms.
The fulcrum shaft 73 is connected to the other end of the swing arm.
Hydraulic cylinders 75 and 76 are provided. Fulcrum shaft 73
Is fixed to the upper end of a support wall 4c formed on the vehicle body 4.
Is held. Also, the cylinders 75 and 76
Fixed on a support bracket 4d formed on the side of the wall 4c
Supported. Further, the swing arms 71 and 72
The upper middle position and the upper end of the arm guide
Connected by connecting rods 77 and 78, respectively.
You. On the other hand, the left and right wire ropes 13 and 14 are
The lower ends are connected to the rake 5 respectively,
The positions inside the cameras 11 and 12 are arranged substantially in parallel with these.
Have been. The lower end of each arm guide 111, 112
The rope guide rollers 81,
82 are arranged, and these rollers are respectively
A state where the roller guide arms 83 and 84 are rotatable at the distal ends.
Supported by. Each wire rope 13 and 14
Wrapped around these rope guide rollers 81, 82,
The vehicle is guided to the side of the vehicle body 4 and installed on the support wall 41 of the vehicle body.
A wire drum 85 constituting the loop winding mechanism 8,
86 and is connected here. The rope winding mechanism 8 includes a wire drum 8
5, 86, and a drive motor 87 as a rotary drive source thereof.
And the rotation from here is reduced and transmitted to the wire drum.
, And a speed reduction mechanism 88 for performing the operation. Here, each roller guide arm 83, 84
Is a fulcrum shaft supported at the upper end of the support wall 41 of the vehicle body 4
It is possible to turn around 73. These rows
The rear end sides of the guide arms 83 and 84 are
Supported by a balance mechanism 9 (see FIG. 6).
You. In this example, the rake 5
Wire to change the opening position and closing position
Connected to the loop 20. This wire rope 20
Are wire ropes 13 and 14 on the left and right as shown in the figure.
And the lower end is connected to the center of the rake 5.
Is tied. The wire rope 20 has an upper end
Side, is wound around the rope guide roller 21
And is guided to the side of the vehicle body 4 and the left and right winding drums
Take-up drums coaxially arranged at an intermediate position between 85 and 86
And is connected thereto. This winding
The drum 22 is integrated with the left and right drums 85 and 86.
Rotate. The rope guide roller 21 is connected to the support arm 2
3 is rotatably supported at the tip thereof.
The arm 23 is connected to the left and right rope guide arms 83 and 84.
It is possible to turn around the fulcrum shaft 73 that defines the turning center.
It is in a state. However, after this support arm 23
The end is connected to a drive cylinder 24, which is
It is possible to turn around the fulcrum shaft 73 by the Linda 24
It is. When the support arm 23 pivots,
The rope guide roller 21 supported on the tip side moves up and down
Swing the rope 20 wrapped around here
Will be moved down. The vertical movement of this rope 20
Therefore, the position of the rake 5 changes from the opening position to the closing position,
Or vice versa. Next, referring to FIG. 5, the dust remover 1 of the present embodiment will be described.
The structure of the part of the rake 5 will be described. Rake 5
L-shaped support arm connected to the lower end of each arm 11, 12
Are supported by the memories 51 and 52. These support
At the ends of the arms 51 and 52, a fulcrum shaft 53 is centered.
And the main body frame 5 having a curved side shape forming the rake.
4 is rotatably supported. The tip of this body frame 54
On the side part, the rake plow blade around the fulcrum shaft 55
56 is rotatably supported. Here, the body frame 54
From the state shown in FIG.
In the direction of arrow A so that it does not rotate any further.
A stop mechanism (not shown) is provided. Similarly, a plow blade
56 also moves in the direction of arrow A about the fulcrum shaft 55.
A detent mechanism (not shown) is arranged to prevent rotation
Have been. Here, the left and right ropes 13, 14 and the middle
The central rope 20 is supported between the support arms 51, 52.
Wrapped around the lower side of the rope guide roller 57
As a result, it is guided to the rake tip side. Soshi
To bypass the position above the fulcrum shaft 55 of the rake plow blade 56
And is connected to the lower end portion 58. The rake 5 of this configuration has three ropes 1
Because it is hung by 3, 14, 20
Due to these tensions, the body frame 54 and the
The plow blade 56 is held in the state shown in FIG.
In this state, the plow blade 56
And the main body frame 54 is inclined obliquely upward.
Is almost at right angles to. In this state
If the key 5 is raised along the screen bar 3,
Dust can be scooped from the surface of the blade 3. But
Thus, this state is the “closed position” of the rake 5. Here, as shown in FIG.
The lower end of the rope 20 is the same as the left and right ropes 13 and 14.
Connected to rake 5 as well as rake 5
Is also connected to the link mechanism 30 that can change the posture of the
You. The link mechanism 30 includes a connection fitting 31.
The end is connected to the rope 20. Lower end of connection fitting 31
Is rotatably connected to the first link 32, and the first link
The lower end of the link 32 is rotatably connected to the second link 33.
Have been. The other end of the second link 33 is forked.
It is branched, and one end of the branch is rotatable,
And the other end is connected to the fourth link 3
4 is rotatably connected to the tip. This fourth phosphorus
The other end of the rope 34 is connected to a rope by a rake plow blade 56.
It is rotatably connected to the position 58. In this embodiment configured as described above, the left and right
Holding the ropes 13 and 14 of the
When only the lock 20 is lifted,
First, the plow blade 56 is moved around its fulcrum shaft 55 by an arrow.
Forcibly rotated in the direction of mark B. B direction of the plow blade 56
Rotation is regulated by a rotation stop mechanism (not shown).
As shown in FIG. 5 (C),
Stop in a state of running. From this state, the rope 20 is further pulled.
When lifted up, the body frame is
The plow blade 54 and the plow blade 56 are integrally formed to support the front end of the body frame.
It turns around the point axis 53 in the direction of arrow B. This result
As a result, as shown by the imaginary line in FIG.
It is in a posture standing almost in parallel with the button 3. This posture
Scoop up the dust on the screen even if you lift
I can't. The opening state shown in FIG.
Fig. 5 (C)
It is released when the posture shown in Fig. 4 is taken. Therefore,
This attitude is the “opening attitude” of the rake. Next, referring to FIG.
The structure will be described. Balance mechanism is formed on the left and right
Have the same configuration, so that the balance machine on the arm 12 side
The structure will be described. The balance mechanism 9 of this example supports the vehicle body 4.
Rotated by bracket 91 attached to the side of wall 4C
A guide roller 92 freely supported and a lower side of the guide roller 92
And a connecting member 93 wound therethrough.
One end of the connecting member 93 is connected to the
It is connected to the lower surface of the inking arm 72. Connecting member 9
The other end of the support arm 8 is connected to the support arm 8 by a connection fitting 95.
4 is connected to the lower surface. These connection positions are
It is on the rear side of the shaft 73. Each of the arms 72 and 84 has a downward
The force toward is always acting. Therefore, the fulcrum shaft 7
A turning force that turns in the direction of arrow C around 3 acts.
ing. In this example, the fulcrum shaft 7 is
At a position on the rear side of 3, the turning force of one arm
The force in the direction to suppress the turning force of the other arm.
Is working. Therefore, mutual turning force causes
An equilibrium of forces acting on each other is formed. Yo
Therefore, a mechanically stable configuration can be realized. (Dust scooping and discharging operation)
Dust scooping motion of the traveling dust remover 1 of this example configured as described above.
Dust collected and collected in a bucket inside the vehicle
The operation of discharging to the outside will be described. In the initial state, the dust remover 1 has three
By winding the loops 13, 14, 20
With the rake 5 at the tip of 1, 12 raised,
You. In this state, the dust remover 1 is
Move to the position and stop, and then rope 13,
Repeat steps 14 and 20. Thereby, the arms 11, 12
Is extended, and the rake 5 at the tip of the
Descend. Here, screen bar 3 and rake 5
If you want to adjust the distance between the swing arms 71 and 7
2 may be turned by a predetermined angle. According to this behavior
Then, the arms 11 and 12 swing and are connected to the tips thereof.
Rake 5 approaching screen bar 3
Or move away. This state is shown in FIG.
Are shown in imaginary lines. Therefore, in this example,
5 can be raised and lowered at any position, and
With the opening width, dust can be scooped. Further, the center rope 20 is connected to the support arm 23.
And as described in FIG. 5,
Switching the rake 5 from the open position to the closed position
it can. By adjusting the amount of pulling of the rope 20,
Postures between these postures can also be used. But
Therefore, as shown by an imaginary line D in FIG.
After moving the rake 5 to the upper end, switch to the closed position
The dust that is trapped in the rake 5
Can be discharged into the bucket 45. Also,
Even if the elevator 5 cannot be moved up and down smoothly,
Raise the rake by switching from the closed position to the closed position.
The descent can be performed quickly. The dust scooped up by the rake
Is collected in the slot 4a. The bottom of the bucket is conveyor 4
b to drive the conveyor
It can be discharged to the outside. In this example, as described above,
The body 43 can be lifted up and swiveled in the lateral direction.
Therefore, the vehicle body 43 is floated at a height corresponding to the dust discharge position.
And in this state, the conveyor moves to the discharge position.
If you turn in the horizontal direction, dust in the bucket
Can be discharged to the place. In this embodiment, the vehicle body 43 and the second
The carriage 404 arranged between the pedestals 42 can be moved back and forth.
Therefore, these floating operations are performed.
That is, in this example, the levitation mechanism of the vehicle body and the front side of the gantry 42
The bogie 404 and its drive
With a simple mechanism composed of the dynamic cylinder 401,
There is an advantage if it can be realized. Further, in this embodiment, the vehicle body 43 is raised
On the axle line 47A of the turning rear wheel that is the turning center for
, The center of rotation 420 in the horizontal direction is located. This
As the upper, lower, left and right turning centers are specified,
The dust remover is in an inclined position on slopes
Also, there is no hindrance to turning movement despite the body lifting
It can be done smoothly. As described above, the traveling type filter according to the present invention can be used.
The dust machine lifts the vehicle body equipped with a bucket
In addition, the vehicle can be turned in the vehicle width direction. But
Place the collected dust in the vehicle in the desired direction.
Can be discharged to the discharge location where it is located. Also, the discharge location
Height and vehicle width, even if the height and direction of the vehicle are different
By changing the turning amount in the direction, the desired discharge location
The dust outlet of the vehicle body can be directed to the vehicle. further
According to the present invention, the turning rear wheel for lifting the vehicle body is
To turn the vehicle body in the vehicle width direction at a position on the axle line.
The turning center is located. Therefore, a traveling dust remover
Is in an inclined position on a slope,
A circle that does not hinder the turning motion of the vehicle body despite the rising of the vehicle body
It can be done smoothly.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front view showing a configuration of a traveling dust remover according to a first embodiment of the present invention. FIG. 2 is a schematic side view of the dust remover of FIG. 3A and 3B are views for explaining a levitation mechanism and a turning mechanism of a vehicle body in the dust remover of FIG. 1, wherein FIG. 3A is a schematic plan view and FIG. 3B is a schematic side view. 4A and 4B are diagrams showing a configuration of a portion defining a turning center of a vehicle body in the dust remover of FIG. 1, wherein FIG. 4A is a schematic plan view, FIG. 4B is a schematic front view, and FIG. It is a side view. 5A and 5B are diagrams illustrating a mechanism for changing the position of the rake of the dust remover in FIG. 1, wherein FIG. 5A is a diagram illustrating a state in which the rake is in an open position, and FIG. (C) is an explanatory view showing a state in which the rake is switched to a closing position. FIG. 6 is a schematic side view showing a balance mechanism of the dust remover of FIG. 1; [Description of Signs] 1 ... Dust remover 3 ... Screen bar 4 ... Car body 4a ... Bucket 4b ... Conveyor 5 ... Rake 6 ... Support mechanism 7 ... Arm swing Mechanisms 11 and 12 Lifting ropes 13 and 14 Telescopic arm 20 Flexible posture changing rope 41 First gantry 42 Second gantry 43 Vehicle body 43b ... flat surface 43c ... inclined surfaces 44R, 44L, 45R, 45L ... running rear wheels 46R, 46L ... turning front wheels 47A ... axle axis (vertical turning center) 47R, 47L ··· Rear wheel for turning 48R, 48L ··· Front wheel for traveling 401 ··· Drive cylinder for turning 404 ··· Truck 403 ··· Rotating drive roller 420 ··· Center of turning in the lateral direction

Claims (1)

(57) [Claims] [Claim 1] It has a front wheel for running and a rear wheel for running, and raises and lowers a rake along a screen bar installed in an irrigation channel or the like to remove dust captured by the screen. In a traveling dust remover that scoops up and removes, a first gantry supported by the traveling rear wheel, and a vehicle front side and a rear side are supported by a turning front wheel and a turning rear wheel, respectively. A second frame on which a portion including a turning rear wheel rides on the first frame; a front side supported by the running front wheel; and a rear side supported by the turning rear wheel. A vehicle body, by turning the vehicle body up and down about the axle axis of the turning rear wheel, so that the front side of the vehicle body is supported by the traveling front wheels and supported by the second gantry; A vehicle body levitation mechanism that switches to a floating state, and the second gantry is linked to the vehicle body levitation mechanism in a direction opposite to a turning direction of the vehicle body by the vehicle body levitation mechanism around an axle axis of the turning rear wheel. By turning to
A turning wheel levitation mechanism for switching a front side of the gantry between a state supported by the turning front wheel and a floating state supported by the vehicle body; and And a turning mechanism for turning the vehicle in the vehicle width direction around a position on the axle line of the vehicle as a turning center.