JPH0412096Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is a rake-type removal method for removing dust and debris from bar screens installed in dams, river intakes, large pumping station waterways, etc. Regarding the dust machine.

[Prior art and its problems]

This type of dust remover is often of the wire rope type, in which a rake is raised and lowered along a screen by a wire rope. However, with conventional dust removers of this type, if the rake is stuck on top of a large piece of dust near the water surface and does not descend, or if there is a horizontal flow of water, the rake will flow sideways and scrape the dust. It is difficult to fry, and it also has drawbacks such as being unable to scrape up giant dust particles or dust particles that have eaten into the bar screen.

[Means for solving problems]

This invention was made to eliminate the above-mentioned drawbacks, and its feature is that in a dust remover equipped with a rake that scrapes up dust that hangs in front of a screen such as a waterway, the rear end of the dust removal mechanism frame is The rear ends of a pair of left and right hoisting arms are pivotally supported on the upper part so as to be able to swing up and down, and a pair of left and right rake lifting guide frames are pivotally attached to the front ends of the hoisting arms so as to be swingable back and forth. An arm truck having an upper end attached thereto is disposed, and the arm truck is raised and lowered by a multi-stage cylinder device pivotally supported between the upper ends of a rake elevating guide frame,
A pinion is engaged with a rack disposed over the entire length in the vertical direction within the rake elevating guide frame, and the pinion is pivotally connected to a transmission shaft that is pivotally supported on an arm truck, and an endless chain that is wound vertically inside the rake arm is engaged with the pinion. The upper sprocket is directly or indirectly rotated by the transmission shaft, the upper end of the rake is connected to a rake truck that moves up and down using a rake arm as a guide, and is locked to the chain;
The rake elevating guide frame is configured to be swung back and forth by a cylinder device.

[Effect]

According to the dust remover according to this invention, first, to put it into a rest state, when the arm truck is raised by the multi-stage cylinder device, the easily engaged pinion rotates and the endless chain is rotated, so that the rake arm is raised. At the same time, the rake truck also rises along the rake arm, and eventually the rake is raised twice as fast as the rake truck, reaching its upper limit.
forced to stop. Therefore, the upper end of the frame may be pushed forward to a substantially vertical state by moving the erecting arm upward and operating the frame swinging cylinder device. Next, when performing dust removal work, pull the upper end of the rake elevating guide frame rearward using the cylinder device, and while lowering the hoisting arm, operate the multi-stage cylinder device to lower the arm cart at twice the speed. The rake descends and immerses into the water, and when it reaches its lowering limit, the multistage cylinder stops. Then, when the upper part of the rake elevating guide frame is pushed forward by the cylinder device, the rake moves while scraping up the dirt in the water toward the rear, that is, toward the screen, and stops when it comes into contact with the screen. At this time, the lower end of the rake is located at the lower end of the screen and is pressed against the screen. In this state, when the multi-stage cylinder device is operated again to raise the rake cart and move the undulation arm upward, the rake is moved in front of the screen. The rake rises while raking up the dust on it, and when it passes the top of the front apron above the screen, the rake moves backwards due to the pressing force of the cylinder device, and the dust falls onto the chute provided on the rear surface of the apron. At the very least, it stops at the upper limit and enters a dormant state. The dust removal work is performed in this manner, and this work is repeated as necessary.

〔Example〕

Embodiments of this invention will be described in detail below with reference to the drawings. In this embodiment, the dust remover is of a traveling type.

In the drawing, 1 is a waterway, 2 is a bar screen installed across the waterway side walls 1A, and 3 is a waterway.
is a slab installed above waterway 1 so as to straddle it. On the slab 3, there is a base 4 parallel to the bar screen 2 and a garbage receiving and carrying out conveyor 5.
A running rail 7 of a dust removal machine truck 6 is laid on the base 4. 8 is dust removal machine trolley 6
9 is a dust removal mechanism provided overhanging the left and right ends of the upper rear part of the truck 6; 10 is a front apron provided on the front surface; A dust input chute 11 is provided rearward from the upper edge of the front apron 10. And this shot 1
A dust receiving conveyor 12 is provided parallel to the lower end of the conveyor 1 directly above the stationary conveyor 5, and a dust receiving plate 13 is erected behind the dust receiving conveyor 12.

14 is a rake, 15 is a pair of left and right rake rods, 1
6 is a rake truck connected to the upper end of the rake rod 15, 17 is a rake arm, and the arm truck 18 is connected to the upper end.
are connected. The rake arm 17 has a square column shape and is a pair of left and right arms, and the rake truck 16 is fitted around the rake arm 17 from all four sides.
A wheel 19 is pivotally attached to the frame so as to sandwich the rake arm 17 therebetween.

20 is a pair of left and right rake lifting guide frames,
The front and rear members 20A and 20B are exceptionally connected by a large number of connecting members 20C, and the left and right members 20
A, 20A, 20B, and 20B are connected by a plurality of connecting members 20D to form a guide frame 20. And rake lifting guide frame 2
An arm truck 18 is provided between the two members 20A and 20B so that it can be raised and lowered via wheels 21, and a rack 22 is fixed over the entire length to one of the opposing surfaces of the members 20A and 20B.
A pinion 24 is wedged to both ends of a transmission shaft 23 which passes through the arm carriage 18 in the left and right direction and is rotatably supported. A pinion 24 is engaged with the rack 22, and the transmission shaft 23 is moved as the arm carriage 18 moves up and down. It is supposed to rotate. This transmission shaft 23 has a sprocket 25A located on the center line of the rake arm 17.
are wedge-connected to each other, and an endless chain 26 is wound between each of the rake arms 17 and a sprocket 25B pivotally attached to the inside of the lower end of the rake arm 17, and this endless chain 26 is locked to the rake truck 16. 27 is an idle sprocket.

Upper end member 20 of rake lifting guide frame 20
Two multi-stage hydraulic cylinder devices 28 for raising and lowering the rake are installed between E and 20E in parallel to the frame 20 via a shaft support 29, and the extending end 28A is connected to the arm truck 18 via a pin 30. It is pivoted at the top end.

Reference numeral 31 denotes a pair of left and right lifting arms, the rear portions of which are pivotally supported via a shaft 33 to a bearing stand 32 mounted on the frame 9, and the front end portions of which are located on both outer sides of the rake elevating guide frame 20 and have bearings 34. The rake elevating guide frame 20 is attached to the rake elevating guide frame 20, and supports horizontal shafts 35 protruding from the center of both outer sides, allowing the frame 20 to swing back and forth and also to move up and down. Reference numeral 36 denotes a hydraulic cylinder for raising and lowering the frame, that is, raising and lowering the hoisting arm 31, which is swingably mounted on the dust remover truck 6 via a horizontal shaft 37, and the end of its upward piston rod 38 lifts and lowers the hoisting arm 31 via a bracket 39 and a pin 40. Arm 3
It is attached to the center of the bottom surface of 1. Reference numeral 41 denotes a pushing hydraulic cylinder device for swinging the rake elevating guide frame 20 in the front-rear direction, and the lifting arm 3
1. It is supported by a pivot bracket 42 mounted on the upper surface of the left and right connecting beam 31A via a horizontal support shaft 43 so as to be swingable in the vertical direction. The rake lifting guide frame 20 is attached to the upper rear surface of the rake lifting guide frame 20. 47 is a wiper that scrapes dust off the rake 14, and the upper end of the arm 47A is connected to the pin 4 on the outer surface of the undulating arm 31.
The end of a piston rod 50 of a wiper hydraulic cylinder 49, which is swingably mounted via a lever 8 and whose base end is similarly pivotally connected to the outer surface of the undulating arm 31, is connected to the upper end of the arm of the wiper 47 via a lever 51. ing.

Note that 52 is a driver's cab provided on the dust removal machine truck 6.

The dust removal work in the embodiment of this invention is explained in the third to
This will be explained with reference to FIG. The solid line in FIG. 3 shows the dust remover in a rest state, in which the rake 14 is located considerably above the water surface and the rake elevating guide frame 20 is in a substantially vertical state. Therefore, when starting dust removal work, first operate the hydraulic cylinder 41 to pull the upper part of the rake elevating guide frame 20 backward and rotate the lower part forward, and at the same time operate the hydraulic cylinder device 36 to move the hoisting arm 31. Pull down and move the frame 20 along the two-dot chain line 1 in FIG.
The state shown by 20 is reached. At this time, the rake 14 and the rake arm 17 are at positions 114 and 117, respectively. Next, when the multi-stage hydraulic cylinder device 28 is operated to lower the arm truck 18, the chain 26 fixed to the rake truck 16 moves as the rake arm 17 lowers, so the rake truck 16 moves along with the rake 14. It descends at twice the speed, and the two-dot chain line 214 is shown in Figure 3.
The positions indicated by 216 and 217, respectively, ie, the rake 14, are immersed in the water. Then, when the hydraulic cylinder 41 is operated to push the upper part of the rake elevating guide frame 20 forward, the lower end, that is, the rake 14 moves from the position 214 toward the bar screen 2, scrapes up the dirt in the water, and moves the rake 14 toward the bar screen 2. When the rake 14 comes into contact with 2, the operation of the hydraulic cylinder 41 is stopped (it stops while being pressed)
Then, the state shown by the solid line in FIG. 4 is reached. Subsequently, the rake arm 1 is raised by operating the multi-stage cylinder device 28 to raise the arm truck 18.
7. The rake truck 16 rises together with the rake 14,
The front surface of the bar screen 2 and the garbage hanging thereon are scraped up by the rake 14, and the rake 1
4 passes the position indicated by the two-dot chain line 314 in FIG.
While pushing the upper part of the frame 20 forward, the hydraulic cylinder device 36 is operated to raise the undulating arm 31 and the frame 20 is raised to the position indicated by the two-dot chain line 420 in FIG. let At this time, as shown at 414, the rake 14 is separated from the upper end of the front apron 10, the dust is dropped onto the chute 11, and the hydraulic cylinder device 41
The dust is moved a predetermined amount in the direction of the conveyor 12 by the action of the wiper 47, and the dust is scraped off from the top of the rake 14 by the action of the wiper 47. Then, the frame 20, rake 14, etc. reach the rest position shown by solid lines in FIG. 3, and the dust removal work is completed. Incidentally, the dust dropped onto the conveyor 12 is transferred onto the carry-out conveyor 5 located further below, and is carried out to a predetermined location. Next, the dust removal machine truck 6 is moved and stopped at the next dust removal position to perform the above-mentioned dust removal work.

In the embodiment of this invention, a traveling type was described in detail, but it is of course possible to use a stationary type without using a cart. According to this embodiment, since the rake 14 is supported by two rake rods 15 and two rake arms 17, the rake 14 has a strong structure not only when it is pressed against and detached from the screen 2 but also when going up and down. This does not cause problems, and since the depth is large, it is possible to reliably remove dust from large pieces of dust.

〔effect〕

Since the dust remover according to this invention has the above-mentioned configuration, it has a simple and strong structure, and since the rake is forcibly lowered by an endless chain, it can easily remove dust even if there is dust on the water surface. In addition, the rake is forcibly pressed onto the bar screen via the rake lifting guide frame by a hydraulic cylinder device, so it does not separate from the bar screen or open due to the weight of dust, and it prevents a large amount of dust from accumulating near the bar screen. It is easy to flow down the waste to the downstream of the main river, and the rake arm etc. are all stored in the rake lifting guide frame, so the overall height of the dust remover can be lowered and it is suitable for removing dust in deep water areas. Furthermore, all of the drive parts are stored on land when the system is not in use, making maintenance and management extremely easy.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; FIG. 1 is a side view, FIG. 2 is a front view, and FIGS. 3 and 4 are side views for explaining the operating state. 1... Channel, 2... Bar screen, 9... Dust removal mechanism frame, 14... Rake, 15... Rake rod, 16... Rake truck, 17... Rake arm, 18... Arm truck, 19, 21 ……Wheel,
20... Rake elevation guide frame, 20E... Frame upper end member, 22... Rack, 23... Transmission shaft, 24... Pinion, 25A, 25B... Sprocket, 26... Chain, 28... Multi-stage cylinder device, 31... Lifting arm, 32... Bearing stand,
33... Shaft, 34... Bearing, 35, 37... Horizontal axis, 36... Hydraulic cylinder for luffing, 38... Piston rod, 39... Bracket, 40... Pin, 41... Hydraulic cylinder device, 42... ... Pivot support bracket, 43 ... Horizontal support shaft, 44 ... Piston rod, 45 ... Bracket, 46 ... Pin.

Claims (1)

[Scope of utility model registration request] In a dust removal machine equipped with a rake that scrapes up dust and debris hanging in front of a screen such as a waterway, the rear ends of a pair of left and right undulating arms are pivotably supported at the upper rear end of the dust removal mechanism frame so as to be able to swing up and down. A pair of left and right rake elevating guide frames are pivotally attached to the front end of the hoisting arm so as to be able to swing back and forth, and between the rake elevating guide frames,
An arm cart to which the upper end of the rake arm is attached is arranged, and the arm cart is raised and lowered by a multi-stage cylinder device pivotally supported between the upper ends of the rake lifting guide frame, and a pinion is mounted on a rack provided in the rake lifting guide frame. At the same time, the pinion is wedged on a transmission shaft pivotally supported on the arm truck, and the upper sprocket of the chain wound vertically inside the rake arm is directly or indirectly rotated by the transmission shaft, and the upper end of the rake is A dust remover characterized in that a rake arm is connected to a rake truck for raising and lowering as a guide and is locked to the chain, and the rake raising and lowering guide frame is configured to be swung back and forth by a cylinder device or the like.