JPS5932609B2 - Dust removal equipment - Google Patents

Description

[Detailed Description of the Invention] In recent years, the amount of garbage has increased significantly due to changes in social life, and due to the increasing sophistication of water use and the importance of environmental conservation, the amount of garbage and sediment in water bodies such as lakes, marshes, rivers, and waterways has increased. Removal of objects has become an important issue.

Conventionally, for this type of use, a rotation method in which a rake called a rotary rake is rotated by a chain to scoop the material, and a rake method in which the rake is opened and closed to scrape the material have been used.

Among these, the performance of the rotating method has reached a stage where it should be evaluated technically, so it is used universally, but it is expensive and the rake must descend to the bottom of the water before rising. Because it has a structure that traps dust during the process,
There is a fatal flaw in that once a thick layer of sediment accumulates, the vehicle cannot even be operated.

Therefore, in locations where deposits cannot form and good control cannot be expected, or where an inexpensive dust remover is desired, the rake method is often tried, but with satisfactory results in removing deposits. is not obtained.

The performance defects of this rake-type dust remover are originally caused by its structure. To explain an example with reference to Fig. It is rotatably supported by a guide shaft whose movement is restricted, and is also connected to the opening/closing cable 5.

The cables 4 and 5 are both wound up and let out by a winding machine 6, but the opening/closing cable 5 is arranged via a pulley 7, and by moving this pulley with a screw 8, the rake 2 is opened and closed. It becomes.

Various defects occur due to such a structure.

The first is that the closing action of the rake is extremely slow, resulting in poor ability to remove deposits such as earth and sand, aquatic plants, and the second is that it takes a long time.

Third, separate power is required to operate the screw 8.

・Special Publication No. 48-32463 is a work that slightly corrects these deficiencies.

To briefly explain its structure, in FIG. 2, one end of a rake 12 is rotatably supported on a sliding block 11 that is restrained by a rail 10 provided upstream of a screen 9, and the other end is supported by a tow rope 13. It is attached to a machine and raised and lowered by a hoisting machine 14.

Regarding the opening/closing operation, first, the open state 5 descends, and the descending motion of the sliding block 11 is stopped by the stopper provided at the lower end of the rail 10, that is, the descending motion of the rake 12 is stopped, and the other end descends. By continuing the movement, the rake 12 is closed, and by moving the tow rope 13 to the right side of the axis of the rake 12, the closed state is maintained during the upward movement. It opens by pulling the cable 13 from the left side of the axis of the rake.

With the above innovations, a single hoisting machine and tow rope were sufficient, and a significant economic advance was seen.

However, performance problems still remain.

Firstly, it is no different from conventional side pipes in that it lacks cutting ability due to its slow closing action, and furthermore, since the closed state is maintained only in the direction in which the tow rope is pulled, the rake constantly cuts through the screen. 9, and above the top end of the screen, an outer wall 15 was newly required to resist the push of the rake and prevent the rake from overturning, in place of the screen.

Furthermore, the closed state is incompletely maintained, and near the top,
An auxiliary member pin 16 is required to maintain the closed state, and since the sliding movement of the block is adopted, frictional resistance is large, and since the rail is curved nearly horizontally, it is necessary to push back the rake. A pushing arm 17 is required.

In view of the current situation, the present invention aims to fundamentally improve these deficiencies, and its first purpose is to improve the dynamic force in accordance with the general principles of cutting tools such as hoes. The purpose is to utilize this method to provide the ability to cut deposits.

The second is to increase the amount of garbage that can be captured, and to prevent the garbage once captured from falling, it is equipped with a horizontal scooping function, and also has a structure that prevents the rake from tilting all the way to the top of the transporter. That is to say.

Thirdly, the posture of the rake is maintained only by the rail and tow rope, eliminating any sliding movement between the rake and the screen or apron.

In order to achieve the above object, the present invention has the following configuration.

Side plate 20.23 integrated with rake 19 on shaft 21 fixed to guide plate 22 with upper and lower rollers 24.25
is rotatably supported on the shaft 21, and on the shaft 21 is rotatably a sealed inner blade box 35 having an impeller 36 coaxially inside and having an arcuate groove 37 formed on the outer side thereof. Pivotally supported, said side plate 2
A pin 34 movably engaged with the arcuate groove 31 is fixed to a position opposite to the arcuate groove 37 on the 0, and one end is rotatably supported on the side plate 23 by a pivot shaft 33,
The upper and lower rollers 24 and 25 of the rake body 50 are provided with a cross arm 26 connected to the tow rope 27 at the other end, and are provided with a tow rope hoist 28 at the upper end, extending from the hoist to the waterway bottom. This is a dust removal device that is housed and guided by a rail 30 which is composed of two branch rails that branch into an upper branch rail 39 and a lower branch rail 40.

The present invention will be described in detail below based on embodiments shown in the drawings.

The rail 30 has an upper branch line 39 and a lower branch line 4 above it.
The upper and lower branching rails 39 and 40 branch in parallel with a gentle slope, and the upper branching rail 39 curves downward and the lower branching rail 40 curves upward from the point on the belt conveyor 47 where it is desired to release the garbage. ing.

The curved portion of the lower branch rail 40 has a radius of curvature corresponding to the radius of curvature of the rake 19, and the upper branch rail 39 and the lower branch rail 4
The vicinity of the junction with 0 is linear.

The scraping body 50 includes upper and lower rollers 24 that slide within the rail 30.
．． The rake side plates 20, 23 and an impeller 35 are rotatably supported on a shaft 21 fixed to a guide plate 22 having a diameter of 25.

To explain this in more detail, the side plate 20 has a pin 34 inside, the inner blade box 35 has an impeller 36 coaxially inside, and the pin 34 is provided on the outside of the inner blade box. an arcuate groove 37 that engages with the pin 34 at a position facing the
It consists of

The inner plate 23 of the rake 19, like the outer plate 20, is rotatably supported on a shaft 21, and at an appropriate position on the inner plate 23 there is a armrest 26 whose other end is connected to the tow rope 2T by a pivot shaft 33. One end is rotatably supported.

A convex link piece 41 is provided at the branch point between the upper branch rail 39 and the rail 30 by a rotating shaft 42, and a link piece stopper 43 is provided to stop the link piece when the upper link of the link piece 41 is in an upright position. Below the link is a limit switch 45
will be established.

The lower link of the link piece 41 is configured to engage with a rake notch 44 provided in the rake 19.

The present invention has the above configuration, and its operation and function are as follows.

First, in FIG. 5, vector W1 is the weight of the rotating part of the raking body, vector W2 is the weight of the other part of the raking body,
Vector W.

indicates the total weight of the raking body, and points GG1G2 indicate the positions of the respective centers of gravity.

The angle θ indicates the maximum expected friction angle, and the vector R,
R1 is the reaction force that the lower roller 25 receives from the rail 30 when descending and rising, respectively, and the vector T indicates the tension of the towline 27.

The force when the raking body is lowered is the total weight W.

In addition, there is a reaction force R1 and a tension force T, and these three forces must keep the rake 19 open, but since the angle θ is the expected maximum friction angle, the arm must be adjusted so that these three sides are balanced. It is safe if the position of the pivot shaft 33 of the gold 26 is determined.

In such a state, a force that prevents the shaft 21 from descending is
When acting on W2. Not only does Wo decrease, but the total weight G.

moves to the left in the figure, the balance is broken, and the pivot shaft 3 of the arm arm 26
The rake 19 rotates counterclockwise in the figure, centering on the guide plate 2.
2 rises, but the arm 26 moves with the rotation of the rake 19.
Move to the right in the diagram.

In this case, the total weight G.

is located sufficiently higher than the pivot shaft 33 of the cross arm 26, this rotation is rapid and the rake 19 can generate the impact force necessary to cut the deposit.

However, if this impact force acts directly on the device, there is a risk of damage to the device, so the outer periphery of the impeller 36 is rotatably surrounded by an inner blade box 35 and sealed, and a highly viscous fluid is sealed inside. A hood damper is installed.

Therefore, the deposit can be cut with a moderate impact force.

As shown in FIG. 6, a pin 34 fixed to the side plate 22 is fitted into an arcuate groove 37 provided in the inner blade box 35 so that it can move within the arcuate groove, so that the pin 34 can move up to the angle α. The rake 19 rotates freely, but is braked and stopped at the angle β.

In other words, the structure is such that the operation of the rake is braked and stopped only at the final stage of cutting the garbage, and the generated impact force is effectively used for cutting.

In this way, as shown in FIGS. 7 to 9, the dust is completely captured by cutting by the impact of the rake.

When the rake is caught, the rake is in a closed state, and when the rake is closed, the tow rope 27 moves to the right in FIG. 7, so the limit switch 46 is activated, the winding machine is reversed, and the rake body is raised.

The tip of the link piece 41 located at the branching point of the rail is located near the center of the curved portion of the lower branch rail when engaged with the stopper 43.

Even when the upper roller 24 approaches the branching point of the lower branching rail 40, the total weight of the rake 19 is on the left side in the figure than the lower roller 25, and is always pressed against the wall on the left side of the rail 30 in the figure. Pass through the branch track 40 without entering it.

As it rises further, the upper and lower rollers 24 and 25 enter the upper and lower rails 39 and 40, respectively, and continue to advance as low as above the belt conveyor 47 at the same inclination.

Next, the upper and lower rollers 24.25 are connected to the upper and lower branch rails 39.4.
When reaching the curved part at 0, the rake 19 gradually begins to slope and begins to fall from the debris that has accumulated on the steeply sloped part, but once it collides with the debris that is stationary downwards, the force of the fall is weakened, and the rake 19 further falls. The tip allows you to change the direction of fall to horizontal.

At this time, since the falling point of the garbage is low, the impact received by the belt conveyor 41 is small, and the belt conveyor 47 is less likely to be damaged.

When the rake 19 further tilts and contacts the tip of the link piece 41, the link piece 41 is lifted.

Furthermore, as shown in FIG. 12, when the lower roller 25 approaches the straight part of the lower branch 40, the rake 19 rises while escaping to the right side in the figure, and finally the link piece 41 reaches the notch 44 provided in the rake 19. The limit switch 45 is activated and the winding machine 28 begins to rotate in reverse.

At this time, the mechanical fulcrum is at the fulcrum O of the lines of force a and b of the load applied to the upper and lower rollers 24° 25, and is far away from the pivot point of the arm arm 26, that is, the fishing fish, so the tension of the towline 27 is It is small and does not require large power.

When the winding machine 28 reverses and the rake 19 descends, the rake 19
The tip of the link piece 41 engages with the upper part of the notch 44, and since the curved portion of the lower branch rail 40 is formed in an arc shape centered around the tip of the link 41, the rake can be opened without difficulty.

At this time, most of the load is on the lower roller 25, and only a slight downward force is applied to the upper roller 24, so the upper roller 24 moves back up the curved part of the upper branch rail 39 to the lower branch rail 40. enter into.

When the rake 19 further descends to the state shown in FIG. 14, the total weight of the rake 19 is located on the right side of the line of force that the lower roller 25 receives from the rail, so it does not close again but descends in an open state.

Since the structural action of the present invention is as described above, it has the following effects.

In other words, it has a structure that can generate the impact force necessary for capturing garbage when capturing it, and can reliably capture any kind of garbage.Since it does not require an apron or the like, the structure is simple and inexpensive. Moreover, since it does not slide against stationary objects such as aprons, there is no loss of power.
Furthermore, when discharging dust to the belt conveyor 47, the discharge point is low and discharged in a horizontal direction, so there is no impact on the belt conveyor 47, preventing damage to the belt conveyor 47, etc. This is a highly practical invention that fully resolves the drawbacks of the invention.

[Brief explanation of the drawing]

Figures 1 and 2 are side sectional views of the conventional product, Figure 3 is a side sectional view showing the embodiment of the present invention, Figure 4 is a front view showing how the rake is installed, and Figure 5 is a diagram of the operating principle. , FIG. 6 is a sectional view taken along line A-A in FIG. 4, FIG. 7 is an operation diagram showing the operating situation, and FIG.
14 are detailed operation diagrams showing the operation situation in detail. 18...Bar screen, 19...Rake, 20...Side plate, 21...Shaft, 22
... Information board, 23 ... Side plate, 24 ...
...Upper roller, 25...Lower roller, 2
6... Bracelet, 27... Tow rope, 28...
... Winding machine, 29 ... Throat plate, 30 ...
...Rail, 31...Float, 32...Valve, 33...Pivot shaft, 34...Pin, 3
5... Inner impeller box, 36... Impeller, 3
7... Arc-shaped groove, 38... Shaping machine, 3
9... Upper rail, 40... Lower rail, 41
...Link piece, 42...Shaft, 43...
... Stopper, 44 ... Notch, 45
...Limit switch, 46...Limit switch, 47...Belt conveyor.

Claims (1)

[Claims] 1. A side plate 20 integrally formed with a rake 19 on a shaft 21 fixed to a guide plate 22 having upper and lower rollers 24, 25,
23 is rotatably supported on the shaft 21, and on the shaft 21, a sealed inner blade box 35, which has an impeller 36 coaxially inside and has an arcuate groove 37 formed on the outer side thereof, is rotatably attached. A pin 34 that movably engages with the arcuate groove is fixed on the side plate 20 at a position opposite to the arcuate groove 37, and one end is rotatably attached to the side plate 23 by a pivot shaft 33. pivoted on,
The upper and lower rollers 24 and 25 of the rake body 50, which is provided with a cross arm 26 whose other end is connected to the tow rope 27, are connected to the bottom of the waterway by having a tow rope hoist 28 at the upper end. It was established that
The upper part of the dust removal device is housed and guided by a rail 30 comprising two branch rails that branch into an upper branch rail 39 and a lower branch rail 40.