JP2818973B2 - Skip type screen dust remover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a skip type waterway that removes accumulated dust by hanging on a grid screen provided at a water intake of a waterway leading to a power generation turbine of a hydroelectric power plant, for example. Screen dust remover.

<Conventional technology> Conventionally, as a screen dust remover for a waterway, which hangs on a vertical lattice screen installed at the water intake of the waterway leading to the turbine for power generation of a hydroelectric power plant, against vertical surfaces perpendicular to the water flow The rake is moved up and down and separated along the upstream surface of the vertical lattice screen that is slightly inclined toward the downstream side and upward to remove the dust that has caught on the screen and accumulated. There is something.

The rake is attached to the tip of two independent wire ropes driven by separate mobiles, one wire rope to raise and lower the rake and the other wire rope to and away from the screen Used for

To explain the operation, when lowering the rake, loosen both wire ropes, separate the downstream end of the rake from the screen, and when raising the rake, further loosen the wire rope for separation and contact, and then contact the rake with the screen. In a state in which the lifting wire lobe and the separating wire rope are pulled by separate driving, and the downstream end of the rake is in contact with the screen, the rake is lifted and the dust accumulated on the screen is scooped with the rake end (scraped off). ).

Since the conventional dust remover operates the two wire ropes with different driving devices as described above, the operation is a heavy chain operation.
There is a problem in that equipment costs corresponding to a single drive unit are required.

<Problems to be Solved by the Invention> Because of the above-mentioned problems, a conventional screen dust remover for a waterway is required to have a simple operation and a low facility cost. An object of the present invention is to provide a skip-type waterway screen dust remover that solves the above problems.

<Means for Solving the Problems> A description will be given with reference to the drawings. To achieve the above objectives,
The skip-type waterway screen dust remover according to the present invention accumulates on the upstream side U of the vertical lattice screen 2 that is slightly inclined toward the downstream side and upward, which is provided on the upstream side of the water intake port 1a of the waterway. A screen dust remover for a skip-type waterway that scrapes and removes garbage, which extends along the left and right sides of the screen 2, upstream of the screen 2, beyond the upper end of the screen 2, and the upper part is downstream. A pair of main guide rails 3, 3 bent so as to be concave toward the main rails 3, sub guide rails 4, 4 are provided on the upstream side along the main guide rails 3, 3, and the screen 2 is scratched on the downstream end. A large number of claws 5c are attached, and the main guide rails 3,
The main wheels 5a, 5a guided by 3 and the auxiliary wheels 5b, 5b guided by the sub-guide rails 4, 4 on the upstream side of the main wheels 5a, 5a are moved up and down along the screen 2 where they are attached. A rake 5 is provided, and one end of a wire lobe 6 for suspending the rake 5 is connected to the upper surface of the rake 5, and the wire rope 6 is wound via a group of pulleys 7 provided above the upper ends of the auxiliary guide rails 4, 4. Machine 8 and a motor 9 for driving the hoisting machine 8 are provided respectively. Lower stoppers 3a, 3a for stopping main wheels 5a, 5a and upper stoppers 3b, 3b are provided at lower and upper ends of the main guide rails 3, 3, respectively. At the lower end and the upper end of the sub guide rails 4, respectively, lower sub wheel escapes 4a, 4a for releasing the auxiliary wheels 5b, 5b upstream and upward, and upper auxiliary wheel escapes 4bd, 4b are provided.

<Operation> The skip-type waterway screen dust remover configured as described above winds the wire ropes 6,6 by the hoist 8 and moves the rake 5 to the upper ends of the main and sub guide rails 3,4. The rake 5 is pulled up above the wire ropes 6, 6 and the rake 5 is turned upside down with the claws 5c and the main wheels 5a, 5a turned down.
When the rake 6 is loosened, the rake 5 falls down to the upstream side around the main wheels 5a, 5a on the upper stoppers 3b, 3b of the main guide rails 3, 3, and the rake 5 is deviated to the upper auxiliary wheel escapes 4b, 4b. The wheels 5b, 5b enter the sub guide rails 4, 4 with the upstream end down,
It is guided by the sub guide rails 3, 3, 4, and 4 and descends. At this time, the claw 5c of the rake 5 moves toward the upstream side and is separated from the screen 2.

When the rake 5 reaches the lower ends of the main and sub guide rails 3, 3, 4, 4, the main wheels 5a, 5a are on the lower stoppers 3a, 3a,
The auxiliary wheels 5b, 5b diverge to the lower auxiliary wheel escapes 4a, 4a.

When the hoisting machine 8 is rotated forward and the wire ropes 6 and 6 are wound, first, the rake 5 is pulled up on the upstream side, and the rake 5 is rotated around the main wheels 5a and 5a, and the sub wheels 5b and 5b are ,
Return to 4. At that time, the rake 5 is pulled up on the upstream side, and takes a posture in which the claw 5c at the front end thereof is inserted into the lattice of the screen 2 perpendicularly to the screen 2.

Subsequently, when the wire ropes 6 and 6 are wound by the hoist 8, the rake 5 lifts up the dust accumulated on the surface on the upstream side of the screen 2 with its claws 5c and lifts it up. When lifted higher than the side claw 5c and reaching the upper end thereof, the auxiliary wheels 5b, 5b are released from the upper auxiliary wheels 4b, 4b.
At last, he gets upside down, skips and throws garbage downstream.

<Example> An example of the present invention will be described with reference to the drawings.
Is a water channel, 1a is a water intake of the water channel, and 2 is a vertical lattice screen provided on the upstream side of the water intake 1a, which is slightly inclined toward the downstream side and upward.

Reference numerals 3 and 3 denote a pair of main guide rails provided on the upstream side U along the left and right sides of the screen 2. The upper part extends upward beyond the upper end of the screen 2 and is concave toward the downstream side D. It is bent to become. 4 and 4 are the main guide rails
A sub-guide rail provided on the upstream side U along 3 and 3.

5 is its main guide rails 3,3 and sub guide rails 4,4
A grid-shaped rake that is fitted horizontally between the rakes and has a large number of claws 5c attached to the front end thereof for scraping the screen 2, and the main guide rails 3, 3 are guided toward the screen 2 on both end surfaces. Sub wheels 5b, 5b guided by the sub guide rails 4, 4 are attached to the wheels 5a, 5a and the upstream side U of the main wheels 5a, 5a, respectively, and the main guide rails 3, 3, and the sub guide rail 4, It goes up and down along 4.

Reference numerals 6 and 6 denote wire ropes each having one end connected to the upper surface of the rake 5 for suspending the 8 rakes 5 on the upstream side of the auxiliary wheels 5b and 5b, and the other end above the upper ends of the auxiliary guide rails 4 and 4. Is wound around a hoist 8 through a group of pulleys 7 comprising pulleys 7a, 7a, 7b, 7b, 7c, 7c. 9 is a motor for driving the hoist 8.

The main guide rails 3, 3 are provided with lower stoppers 3a, 3a and upper stoppers 3b, 3b at the lower end and upper end, respectively, for stopping the main wheels 5a, 5a.
Are provided with lower sub-wheel reliefs 4a, 4a and upper sub-wheel reliefs 4b, 4b at lower and upper ends, respectively, for releasing the auxiliary wheels 5b, 5b to the lower upstream side. Rake 5 and wire rope 6
Are connected rotatably in the front-rear direction via a locking metal fitting 5d provided at the front end and a wire rope connecting tool 6a connected to the tip of the wire rope 6.

 Next, the operation will be described.

In a state in which the wire ropes 6, 6 are wound by the hoisting machine 8 and the rake 5 is moved to the upper ends of the main and sub guide rails 3, 3, 4, 4 (the state shown in FIG. 1E), the rake 5 is , 6
, And the nail 5c and the main wheels 5a, 5a are turned upside down.

When the hoisting machine 8 is rotated in the reverse direction to loosen the wire ropes 6,6, the rakes 5 fall over the main wheels 5a, 5a at the upper stoppers 3b, 3b of the main guide rails 3,3 to the upstream side. ,
The sub-wheels 5b, 5b, which have been deviated to the upper sub-wheel reliefs 4b, 4b, enter the sub-guide rails 4, 4 with the upstream end down and the downstream up (state of FIG. 1F). Main and sub guide rails 3,3,
We are guided by 4,4 and descend. During that time, the upstream side of the rake 5 leans to the auxiliary guide rails 4, 4 and the claw 5c leans to the upstream side,
It is separated from the screen 2 (the state of FIG. 1F).

When the rake 5 reaches the lower ends of the main and sub guide rails 3, 3, 4 and 4, the main wheels 5a and 5a hit the upper surfaces of the lower stoppers 3a and 3a, and the sub wheels 5b and 5b move to the lower sub wheel relief 4a and 4a. Deviate.

Next, the hoist 8 is rotated forward, and the wire ropes 6, 6
When the rake 5 is wound up, the rake 5 is firstly pulled up on the upstream side, and pivots around the main wheels 5a, 5a, and the sub wheels 5b, 5b return to the sub guide rails 4, 4. At this time, the rake 5 is pulled up on the upstream side, is perpendicular to the screen 2, and takes a posture in which the claw 5 c at the front end thereof is inserted into the lattice of the screen 2 (the state of FIG. 1G).

Subsequently, when the wire ropes 6, 6 are wound by the hoist 8, the rake 5 scrapes up the dust accumulated on the upstream surface of the screen 2 with its claws 5c and lifts the rake 5 upward. When the upper wheel is lifted higher than the claw 5c and reaches the upper end thereof, the auxiliary wheels 5b and 5b are deviated to the upper auxiliary wheel escapes 4b and 4b, and the rake 5 finally stands upside down, skips, and moves garbage to the downstream side. And throw it out.

Thus, the present invention provides a set of motor 9 and hoist 8
This makes it possible to simultaneously raise and lower and change the attitude of the rake 5, thereby greatly simplifying the driving operation.

<Effect of the Invention> The present invention is configured as described above,
The following effects are obtained. That is, as compared with the conventional one, the motor 9 and the hoist 8 make it possible to simultaneously raise and lower and change the attitude of the rake 5, thereby greatly simplifying the driving operation. Further, only one set of the motor 9 and the hoisting machine 8 is required, and the equipment cost is reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view of a rake. 1 ... water channel 1a ... water inlet 2 ... screen 3 ... main guide rail 3a, 3b ... stopper 4 ... sub guide rail 4a, 4b ... sub wheel escape 5 ... rake 5a ... main wheel 5b … Auxiliary wheel 5c… Claw 5d… Latch 6… Wire rope 6a… Wire rope connector 7… Pulley group 7a, 7b, 7c… Pulley 8… Winding machine 9… Motor U… … Upstream

Claims (1)

(57) [Claims] 1. Dust that accumulates on the upstream side of a vertical lattice screen (2) that is slightly inclined toward the downstream side and upward, which is provided on the upstream side of the water intake port (1a) of the water channel (1). In a skip type screen dust remover for scraping and removing water, extends along the left and right sides of the screen (2), upstream of the screen (2), beyond the upper end of the screen (2), and downstream of the upper part A pair of main guide rails (3, 3) bent to be concave toward the side are provided, and along the main guide rails (3, 3), sub guide rails (4, 4) are provided on the upstream side, Screen 2 at the downstream end (2) Many claws 5c scratching the surface on the upstream side
And the main wheels (5a, 5) guided by the main guide rails (3, 3) near the screen (2) on both left and right end surfaces.
a) and the sub-wheels (5b, 5b) guided by the sub-guide rails (4, 4) on the upstream side of the main wheels (5a, 5a) are moved up and down along the screen (2). A rake (5) is provided, and one end of a wire rope (6) for lifting the rake (5) is connected to the upper surface of the rake (5), and the wire rope (6) is connected to the upper end of the sub guide rail (4, 4). A hoist (8) for winding through a group of pulleys (7) provided above and a motor (9) for driving the hoist (8) are provided, respectively, and a lower end and a lower end of the main guide rails (3, 3), respectively. A lower stopper (3a, 3a) for stopping the main wheels (5a, 5a) and an upper stopper (3b, 3b) are provided at the upper end, and the auxiliary wheels (5b, 5b) are provided at the lower and upper ends of the auxiliary guide rails (4, 4), respectively. ) To escape to the upper side and upper side (4a, 4a) and upper auxiliary wheel escape 4b, 4b) skip formula waterway screen dust remover made provided.