JPH08120648A - Expansion arm type automatic dust collector - Google Patents

Abstract

PURPOSE: To simplify the structure of an expansion arm type automatic dust collector. CONSTITUTION: An expansion arm type automatic dust collector has a casing 50 tilted and disposed to a main body frame, an upper-stage arm 52 slidably arranged to the casing 50, a lower-stage arm 53 slidably disposed to the upper- stage arm 52 and rakes 54 arranged at the lower end of the lower-stage arm 53. A first lifting-lowering means lifting and lowering the upper-stage arm 52 to the casing 50 and a second lifting-lowering means lifting and lowering the lower-stage arm 53 to the upper-stage arm 52 are provided. The second lifting-lowering means consists of a pair of rotating bodies rotatably disposed at the upper end section and lower end section of the upper-stage arm 52 and a transmission member stretched between each body of revolution. The first point A of the transmission member is fixed onto the casing 50, and a second point B set while the rotating bodies are interposed between the first point A and the second point B is fastened onto the lower-stage arm 53.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removing device used in a waterway such as a sewage treatment plant, a drainage plant and a pumping plant.

[0002]

2. Description of the Related Art Conventionally, in facilities such as a sewage treatment plant, a drainage plant, a waterway for agriculture, a water purification plant and the like, various dust removing devices are arranged to remove contaminants in water.
In this case, an optimum dust removing device that meets the conditions of the facility is selected. A pin rack type dust remover, a loop chain type dust remover, a back rake type dust remover and a telescopic arm type dust remover are provided as the dust remover. Among these, in the telescopic arm type dust remover, a dust removing screen is arranged so as to be inclined in a water channel, an arm extending and contracting with respect to the dust removing screen is provided, and a rake is attached to the tip of the arm. Then, the rake is moved upward to scrape off the dust collected by the dust removal screen (Actual Kosho 6).
1-31061 gazette).

Since the telescopic arm type dust remover has a low machine height in a state where the arms are contracted and can be miniaturized, it is used when it is installed in a deep water channel and when traveling across a plurality of water channels. be able to. FIG. 2 is a schematic view of a conventional telescopic arm type dust remover. In the figure, 11 is a telescopic arm type dust remover, 12 is a dust removing screen disposed in a water channel, and 13 to 15 are arms which are slidably attached to each other. The arm 13
Sprockets 16 and 17 are attached to both ends of the endless chain, and an endless chain 18 is stretched around the sprockets 16 and 17. The sprocket 2 is provided at both ends of the arm 14.
0 and 21 are attached, and an endless chain 22 is stretched around the sprockets 20 and 21.

The endless chain 18 and the arm 14, the endless chain 22 and the arm 13, and the endless chain 22 and the arm 15 are fixed at appropriate places. Then, by driving the first motor 23 provided at the upper end of the arm 13, that is, at the top of the expandable arm type dust remover 11 to rotate the sprocket 16, the arm 14 is placed inside the arm 13 and the arm 15 is placed inside the arm 14. The arms 13 to 1 can be stored in the inside, or the arm 14 can be taken out of the arm 13 and the arm 15 can be taken out of the arm 14.
5 can be expanded and contracted. Therefore, by driving the first motor 23, the rake 25 provided at the tip of the arm 15 can be moved up and down along the dust removing screen 12.

Reference numeral 26 is a support shaft for swingably supporting the arm 13, and 27 is an pushing device for swinging the telescopic arm type dust remover 11 to engage and disengage the rake 25 with respect to the dust removing screen 12. , Driven by the second motor.

[0006]

However, in the conventional telescopic arm type dust remover, the arms 13 to 15 are used.
Since the endless chains 18 and 22 are used for expanding and contracting, the structure becomes complicated. SUMMARY OF THE INVENTION It is an object of the present invention to provide a telescopic arm type automatic dust remover capable of solving the problems of the conventional telescopic arm type dust remover and simplifying the structure.

[0007]

To this end, in the telescopic arm type automatic dust remover of the present invention, a casing that is inclined and arranged in the main body frame and a slidable arrangement with respect to the casing are provided. It has an upper arm, a lower arm slidably arranged with respect to the upper arm, and a rake arranged at the lower end of the lower arm.

[0008] Further, it has first elevating means for elevating and lowering the upper arm with respect to the casing, and second elevating means for elevating and lowering the lower arm with respect to the upper arm, and the second elevating means is , A pair of rotating bodies rotatably arranged at the upper and lower ends of the upper arm, and a transmission member stretched between the rotating bodies. Then, a first point of the transmission member is fixed to the casing, and a second point set by interposing a rotating body between the first point and the first point is fixed to the lower arm.

[0009]

According to the present invention, in the telescopic arm type automatic dust remover, the casing which is inclined and disposed on the main body frame, the upper arm which is slidably disposed on the casing, and the upper stage are provided. It has a lower arm arranged slidably with respect to the arm, and a rake arranged at the lower end of the lower arm.

Further, there are provided first elevating means for elevating the upper arm with respect to the casing, and second elevating means for elevating the lower arm with respect to the upper arm.
In this case, when the first elevating means is operated to move the upper arm up and down with respect to the casing, the second elevating means moves the lower arm up and down with respect to the upper arm. The second elevating means comprises a pair of rotating bodies rotatably arranged at the upper end and the lower end of the upper arm, and a transmission member stretched between the rotating bodies. A first point of the transmission member is fixed to the casing, and a second point set by interposing a rotating body between the first point and the first point is fixed to the lower arm.

In this case, when the upper arm is raised by the lifting stroke with respect to the casing, one of the rotating bodies is separated from the first point. At this time, since the second point is arranged on the opposite side of the first point via the rotating body, the second point can be moved by a distance twice the lifting stroke.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a side view of a telescopic arm type automatic dust remover according to an embodiment of the present invention, FIG. 3 is a front view of a telescopic arm type automatic dust remover according to an embodiment of the present invention, and FIG. 4 is a telescopic arm type dust remover according to an embodiment of the present invention. It is a principle view of an automatic dust remover.

In the figure, 40 is a water channel, 41 is the water channel 4
The dust removal screen disposed in 0, 46 is the dust remover main body,
Reference numeral 47 is a conveyor for carrying out the residue removed from the dust removal screen 41 by the dust remover main body 46. Next, the dust remover body 46 will be described. In this case, the dust remover main body 46 includes a casing 50 that is swingably disposed by a pin 43 in a frame (not shown), and an upper arm 5 that is slidably disposed in the casing 50.
2. A lower arm 53 slidably disposed in the upper arm 52, a rake 54 disposed at the lower end of the lower arm 53, a telescopic arm drive motor 55, and a power cylinder 78 for opening and closing the rake 54. And the like, and the upper arm 52 and the lower arm 53 are moved up and down by jack means provided as a first elevating means.

The casing 50 has a "U" -shaped cross section, and comprises a horizontal portion 50a extending horizontally at the upper end and a hanging portion 50b slanting to the left and right.
An upper arm 52 is slidably disposed inside the hanging portion 50b. The upper arm 52 also has a U-shaped cross section, and a horizontal portion 52 that extends horizontally at the upper end.
a and a drooping part 52b slanting to the left and right, and a lower arm 53 is slidably disposed inside the drooping part 52b. The rake 54 is fixed to the lower end of the lower arm 53.

The screen residue in the water channel 40 is a dust removing screen 4
Blocked by 1, scraped by rake 54, fed to conveyor 47 and discharged by conveyor 47. The telescopic arm drive motor 55 is fixed to the upper end of the casing 50.
By driving 5, the jacking means is activated. The jack means is provided on the drive shaft 56 connected to the shaft of the telescopic arm drive motor 55, the bevel gear speed reducers 57 provided on the left and right, the screw rod 61, and the horizontal portion 52a. It consists of a threaded rod 61 and a traveling nut 62 screwed together.

The bevel gear speed reducer 57 includes the drive shaft 5
6, a drive gear (not shown), and a driven gear (not shown) that meshes with the drive gear and fixes the screw rod 61. Therefore, when the telescopic arm drive motor 55 is driven to rotate the drive shaft 56, the rotation of the drive gear is transmitted to the driven gear, and the screw rod 61 is rotated together with the driven gear.

By the way, the traveling nut 62, which is screwed with the screw rod 61, is disposed on the horizontal portion 52a of the upper arm 52. Therefore, when the screw rod 61 is rotated, the upper arm 52 moves up and down by a distance corresponding to the rotation amount. The upper arm 52 and the lower end of the upper arm 52 have a sprocket 7 as a rotating body, respectively.
1, 72 are rotatably arranged, and both sprockets 71,
An endless chain 73 as a transmission member is stretched between 72. The sprockets 71, 72 and the endless chain 7
The upper and lower arms 52 are arranged one by one on the left and right to form a second elevating means.

The endless chain 73 is fixed to the lower end of the casing 50 at the first point A and to the upper end of the lower arm 53 at the second point B. In this case, the vicinity of the sprocket 71 in one straight line portion 73a of the endless chain 73 when the upper arm 52 is placed at the lower end position (state of FIG. 1) is set as the first point A, and the endless chain 73 is
The second point B is the vicinity of the sprocket 72 in the other straight line portion 73b.

Next, the operation of the telescopic arm type automatic dust remover having the above construction will be described. First, when the telescopic arm drive motor 55 is rotated in the forward direction and the drive shaft 56 and the screw rod 61 are rotated, the upper arm 52 is raised. Then, when the upper arm 52 moves to the upper end position, the sprocket 71 is moved to the position S1 and the sprocket 72 is moved to the position S2. At this time, when the upper arm 52 moves by the lifting stroke L _M , the sprocket 7
1 also separates from the first point A by a lifting stroke L _M.
Since the second point B is moved by the distance 2L _{M which is} twice the lifting stroke L _M according to the principle of the pulley,
The rake 54 is moved to position S3.

In this way, the rake 54 can be moved along the dust removing screen 41, and the residue on the dust removing screen 41 can be scraped up by the rake 54 and discharged to the conveyor 47 via the apron 85. Thereafter, when the power cylinder 78 is operated to swing the casing 50 to open the rake 54 and rotate the telescopic arm drive motor 55 in the opposite direction, the upper arm 52 is lowered, and the rake is accordingly accompanied. 54 is also lowered.

Then, the upper arm 52 is moved to the lower end position.
When placed, the rake 54 is also placed at the lower end position and
Stop the telescopic arm drive motor 55,
Actuating the contactor 78 to close the rake 54.
Then, one cycle of the dust removing operation can be completed. Figure
As shown in Fig. 4, the sprocket 71 is regarded as a pulley and
Considering the end chain 73 as a rope, the telescopic arm drive model
The tensile force of the motor 55 is F, and the tensile force of the rake 54 is
If the force is W, then F = 2W. Then, the endless motor driven by the telescopic arm drive motor 55
The lifting speed of the chain 73 is v_MAnd the lifting stroke
L_MAnd the moving speed of the rake 54 _RWhen
And pulling stroke L_RThen, v_R= 2v_M L_R= 2L_M become.

The present invention is not limited to the above-mentioned embodiments, but can be variously modified based on the spirit of the present invention, and they are not excluded from the scope of the present invention.

[0023]

As described above in detail, according to the present invention, in the telescopic arm type automatic dust remover, the casing mounted on the main body frame in a tilted manner and the slidable arrangement with respect to the casing are arranged. It has an upper arm provided, a lower arm slidably arranged with respect to the upper arm, and a rake arranged at a lower end of the lower arm.

Further, there are provided first elevating means for elevating the upper arm with respect to the casing and second elevating means for elevating the lower arm with respect to the upper arm.
The second elevating means is composed of a pair of rotating bodies rotatably arranged at the upper end and the lower end of the upper arm and a transmission member stretched between the rotating bodies. A first point of the transmission member is fixed to the casing, and a second point set by interposing a rotating body between the first point and the first point is fixed to the lower arm.

In this case, when the upper arm is raised with respect to the casing by the lifting stroke, one of the rotating bodies is separated from the first point, and the second point is moved by a distance twice the lifting stroke. . Therefore, the height of the telescopic arm type automatic dust remover can be lowered accordingly.
Further, since it is sufficient to dispose the transmission member for one stage, the structure can be simplified.

[Brief description of drawings]

FIG. 1 is a side view of a telescopic arm type automatic dust remover according to an embodiment of the present invention.

FIG. 2 is a schematic view of a conventional telescopic arm type dust remover.

FIG. 3 is a front view of the telescopic arm type automatic dust remover in the embodiment of the present invention.

FIG. 4 is a principle diagram of a telescopic arm type automatic dust remover according to an embodiment of the present invention.

[Explanation of symbols]

 50 casing 52 upper arm 52a horizontal part 53 lower arm 54 rake 55 telescopic arm drive motor 56 drive shaft 57 bevel gear reducer 61 screw rod 62 traveling nut 71, 72 sprocket 73 endless chain A first point B second point

Claims (2)

[Claims] 1. A casing (a) which is inclined and disposed on a main body frame, (b) an upper arm which is slidably mounted on the casing, and (c) an upper arm. A lower arm slidably disposed, (d) a rake disposed at the lower end of the lower arm, (e) first elevating means for elevating the upper arm with respect to the casing, (f) ) Having a second elevating means for elevating the lower arm with respect to the upper arm, and (g) the second arm.
The ascending / descending means comprises a pair of rotating bodies rotatably arranged at the upper end and the lower end of the upper arm and a transmission member stretched between the rotating bodies. An extendable arm type automatic dust remover, wherein one point is fixed to the casing, and a second point set by interposing a rotating body between the first point and the first point is fixed to the lower arm. 2. The telescopic arm type automatic dust remover according to claim 1, wherein the first elevating means is a jack means.