JP3484691B2 - Dust remover - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust remover, and more particularly to a dust remover provided with a chain.

[0002]

Conventionally, as this type of dust remover, in Japanese Patent Publication No. 45-24432, a conveyor chain is lifted from a lower driven chain car along a front surface of a lattice and guided by a guide chain car. There is disclosed a dust remover that is curved backwards and descends via an upper drive chain wheel. However, since the guide chain wheel meshes with the chain, a squeaking noise is likely to occur during driving. Therefore, in order to solve such problems,
No. 14494 discloses a front surface of a dust remover frame body that includes a rake mounted on a conveyor chain and a screen provided in a diagonal direction with respect to a length direction of a water channel, and the rake is rotated by a sprocket guide along the screen. A plurality of guide rollers rotatable from the upper part to the lower part of the side are provided at intervals, the conveyor chain is laid on the guide rollers, and the conveyor chain is continuously formed by linking with link plates and pins. (Claim for utility model registration) There is a dust remover. In this dust remover, the conveyor chain rotates while being smoothly guided by the good rotation of multiple guide rollers, reducing noise due to chain drive compared to the conventional method. can do.

By the way, in the dust remover disclosed in Japanese Utility Model Publication No. 4-14494, the guide roller is provided on the mounting bracket via a shaft, and the outer peripheral surface of the guide roller guides the link plate of the conveyor chain. A groove is formed. A cutout groove is formed on one end side of the shaft, and a rotation preventing plate member is fitted into the cutout groove and the plate member is fixed to the bracket by a screw to restrict the rotation of the shaft. (Gazette, Column 3, lines 32-44). In this case, as shown in FIG. 2 of the publication, a force for pressing the guide roller downward is applied from the conveyor chain, and the shaft is fixed to the bracket in a non-rotating state. This will be described with reference to FIG. 6. The load of the chain 101 is
Since it is added to the guide roller 103 rotatably provided on the shaft 102 from above, partial wear M on the upper outer periphery of the shaft 102 due to long-term use.
As a result, there is a problem that the rotation of the guide roller 103 is not smoothly performed, and a rotation noise is easily generated.

Further, as described above, since the guide groove is formed on the outer peripheral surface of the guide roller and the link plate of the conveyor chain is guided in the guide groove, the lateral dimension of the guide roller becomes large, It was difficult to downsize the guide roller.

By the way, in the dust remover described above,
As shown in the figure, although a plurality of guide rollers rotatable from the upper part to the lower part on the front side of the dust remover frame are provided,
Between the guide rollers, the link plates on both sides of the pin are easily bent due to its own weight, which causes a driving noise in the chain. In order to prevent this, it is necessary to apply more tension than necessary to the conveyor chain, and if the chain is unnecessarily stretched, there is a problem that the durability of the chain deteriorates.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a dust remover capable of reducing the generation of noise associated with chain drive.

[0007]

According to a first aspect of the present invention, there is provided a dust remover main body having a screen provided in a water channel, and a guide roller provided on the front side of the dust remover main body at intervals in the vertical direction. In a dust remover equipped with an endless chain that is installed on the guide roller and rotates along the screen, and a rake that is attached to the chain and that discharges dust collected by the screen, the guide roller is a bracket. It is rotatably provided on the shaft mounted on the bracket, and the shaft can be fixed to the bracket at a plurality of rotation positions.

According to the structure of claim 1, when wear occurs on the chain side of the shaft due to long-term use, the shaft is fixed at another rotational position by rotation, and the worn part is displaced from the chain side. The guide roller can be smoothly rotated again.

According to a second aspect of the present invention, the bracket has a substantially square detent hole formed therein, and a detent engagement portion engaging with the detent hole is formed at an end of the shaft.
A hole for inserting a fixing member is bored in the detent engagement portion.

According to the second aspect of the invention, the shaft is rotated to insert the detent engagement portion into the detent hole.
The shaft can be fixed to the bracket at a plurality of rotation positions, and the end of the shaft can be fixed by inserting the fixing member into the hole.

Further, in the invention of claim 3, the chain has link plates arranged at right and left intervals, the guide roller is provided with a ridge at the center of the left and right, and guides are provided on both left and right sides of the ridge. An inclined surface is provided, and the left and right link plates come into contact with the guide roller at positions sandwiching the ridge.

According to the third aspect of the present invention, the left and right link plates abut the guide roller at positions on both sides of the ridge, and the left and right link plates sandwich the ridge in the center by the guide inclined surfaces. You will be guided to the location. Therefore, it is not necessary to provide the guide roller with a portion for restricting the position of the link plate on the outer side in the left-right direction of the link plate, and the lateral dimension of the guide roller can be suppressed.

According to a fourth aspect of the present invention, the chain has a link plate and a connecting portion for connecting the link plate, and the guide roller is arranged so as to be narrower than a space between the connecting portions. .

According to the structure of claim 4, since the link plate is supported by at least one guide roller, it is possible to prevent the link plate from being bent at the connecting portion.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show a first embodiment of the present invention.
As shown in the drawings, the dust remover main body 1 includes a bar screen 2 and left and right conveyor chains 3 which are provided in the width direction of the water channel A and in a direction oblique to the length direction of the water channel A. And a plurality of rakes 4 mounted on the vehicle, a support base 6 is provided above the side wall 5 of the water channel A, a power source such as a motor 7 is disposed on the support base 6, and a drive sprocket connected to the motor 7 is provided. 8 and the driven sprocket 10 provided on the bottom wall 9 of the water channel A, the conveyor chain 3 is hung, and the rake 4 mounted on the conveyor chain 3 collects dust on the bar screen 2. Scrape up.

The conveyor chain 3 includes a pair of inner link plates 12 and 12 and a pair of outer link plates 13 and 13.
And are connected in the length direction by a pin 14. A plurality of guide rollers 17 made of gun metal or the like having excellent corrosion resistance to hard nylon, fresh water, sea water, etc. are rotatably arranged on both front plates 16 of the dust remover body 1. The guide roller 17 is provided with a shaft 18 removably mounted on a bracket 18 having a substantially U-shape, and rotatably mounted on the shaft 19. A shaft insertion hole 20 is provided in the guide roller 17, and a storage chamber for storing lubricating oil such as grease is provided in the center of the shaft insertion hole 20.
21 is provided, and the shaft 19 is formed with an injection path 22 that communicates with the storage chamber 21 on one side, and the other side of the injection path 22 is the shaft.
This inlet 22 communicates with an inlet 22A opened at the other end of 19
A lid 23 is detachably attached to A. An oil seal (not shown) is provided on both sides of the shaft insertion hole 20 so as to sandwich the storage chamber 21 so that the lubricating oil in the storage chamber 21 does not leak to the outside. One side arm portion 18A of the bracket 18
The shaft 19 is formed with an insertion hole 24 through which the shaft 19 can rotate.
The other side forms a detent engagement portion 26 by the abutting step portions 25, 25, and a substantially square detent hole 27 into which the detent engagement portion 26 engages is formed in the other arm portion 18B of the bracket 18. Has been drilled. In this example, the rotation stopping hole 27 has a substantially rectangular shape and has planar inner peripheral surfaces parallel to each other in the vertical direction, and both sides of the upper and lower inner peripheral surfaces are connected by arc inner peripheral surfaces. Then, the other side arm portion 18B comes into contact with the butting step portions 25, 25.
Further, a hole 29 for inserting the split pin 28 as a fixing means is formed in the end portion side of the detent engagement part 27, and the detent engagement part 27 is inserted into the detent hole 27 and inserted. The cotter pin 28 is inserted into the hole 29 at the above position, and the ends 28A of the cotter pin 28 are opened to both sides to prevent the cotter pin from coming off and fixing. Then, by the abutting step 25 and the split pin 28, the bracket 18
A retainer fixing means for fixing the retainer 19 in the retainer state is configured, and in this state, one side of the shaft 19 is supported by the insertion hole 24.

A ridge 31 is provided at the center of the outer circumference of the guide roller 17 in the left-right direction. The outer distance between the guide inclined surfaces 32, 32 is set to be substantially the same as or slightly narrower than the inner distance between the inner link plates 12, 12. The distance h between the guide rollers 17 is set to be narrower than the distance H between adjacent pins 14 of the conveyor chain 3.

Reference numeral 41 is a receiving portion on which scraped dust is dropped, reference numeral 42 is a guide sprocket on the rear side of the dust remover on which the conveyor chain 3 is mounted, and 43 is an auxiliary screen.

Next, the operation of the above structure will be described. When scraping dust in the water channel A, the rotation of the motor 7 is transmitted to the drive sprocket 8, and the drive sprocket 8,
The conveyor chain 3 guided by the driven sprocket 10 and the guide sprocket 42 rotates, and the rake 4 scrapes up dust. In this case, since the conveyor chain 3 is guided while contacting the outer circumferences of the plurality of guide rollers 17, the conveyor chains 3 rotate smoothly by the rotation of the guide rollers 17. Further, since the interval h between the guide rollers 17 is narrower than the interval H between the adjacent pins 14 and 14 of the conveyor chain 3, the link plates 12 and 13 are always supported by the guide rollers 17, so that the conveyor belts are located at the pin 14 positions. It is possible to prevent the chain 3 from bending, prevent the generation of noise accompanying the bending, and it is not necessary to give the conveyor chain 3 more tension than necessary, and stable driving can be performed for a long period of time. Then, the link plates 12 and 13 contact the guide roller 17, and the guide inclined surfaces 31 and 31 cause the left and right link plates 12, 12, 13 and 13 to contact the guide roller 17 at the positions sandwiching the ridge, Since the conveyor chain 3 rotates while being correctly positioned and is guided by the central ridge 31 in this way, there is no need to regulate the position by sandwiching the link plates 12 and 13 from both sides, and the guide roller 17 can be miniaturized. It will be possible.

In this way, the conveyor chain 3 can be stably driven. By the way, at the time of driving, a load is applied from the conveyor chain 3 to the guide roller 17, and the shaft 19
Wear occurs on the side of the conveyor chain 3 in contact with the guide roller 3 due to long-term use. Here, when the split pin 28 is pulled out, the detent engagement portion 26 of the shaft 19 can be pulled out from the detent hole 27 of the bracket 18, and the shaft 19 is rotated 180 degrees as shown by the arrow in FIG. With the worn portion on the lower side and the non-worn true circle portion on the upper side, the detent engagement portion 26 is inserted into the detent hole 27 to set the detent state, and the hole 29
The split pin 28 is inserted into and the shaft 19 is fixed to the bracket 18 in a state where it does not come off. By rotating the shaft 19 in this manner, the portion to which the load is applied from the guide roller 17 becomes a perfect circular portion without wear, and the stable rotation of the guide roller 17 can be restored again.

As described above, in this embodiment, according to claim 1, the dust remover main body 1 having the screen 2 provided in the water channel A and the front side of the dust remover main body 1 are vertically spaced from each other. A guide roller 17 provided, a conveyor chain 3 that is an endless chain that is installed on the guide roller 17 and rotates along the screen 2, and a dust attached to the chain 3 and captured by the screen 2 is discharged. In the dust remover equipped with the rake 4, the guide roller 17 has a bracket 18
Since the shaft 19 attached to the shaft 19 is rotatably provided and the shaft 19 can be fixed to the bracket 18 at a plurality of rotational positions by rotation, if the shaft 19 wears on the chain 3 side due to long-term use, The guide roller 17 can be smoothly rotated again by fixing and fixing 19 at another rotation position and displacing the worn portion from the chain 3 side, and generation of drive noise can be reduced.

As described above, in this embodiment, the second aspect
Corresponding to the above, a substantially square detent hole 27 is formed in the bracket 18, and a detent engagement portion 26 that engages with this detent hole 27 is formed at the end of the shaft 19 to prevent detent engagement. Since the hole 29 for inserting the split pin 28 as the fixing member is formed in the portion 26, the shaft 19 is rotated to rotate the rotation stopper engaging portion 26 in the rotation stopper hole.
By inserting into the bracket 18, the shaft 19 can be prevented from rotating at a plurality of rotation positions, and by inserting the split pin 28 into the hole 29, the end of the shaft 19 can be fixed.

As described above, in this embodiment, the third aspect
Corresponding to, the chain 3 has the link plates 12, 12, 13, 13 arranged at the left and right with a space between the guide rollers 17
Is provided with a ridge 31 at the center of the left and right sides, and guide inclined surfaces 32, 32 are provided on both the left and right sides of the ridge 31, and the guide roller 17 is sandwiched between the left and right link plates 12, 12, 13, Since the 13 contact, the left and right link plates 12, 12, 13, 13 contact the guide roller 17 at positions on both sides of the ridge 31, and the left and right link plates 12, 12, 13, 13 guide inclination. Surface 32, 32
Is guided to a position sandwiching the ridge 31 in the center. Therefore, it is not necessary to provide the guide roller 17 with a portion for regulating the positions of the link plates 12, 12, 13, 13 on the outer side in the left-right direction of the link plates 12, 12, 13, 13, and the dimension of the guide roller 17 in the left-right direction. Can be pressed down, its overall size can also be pressed down, and its height can be reduced.

As described above, in this embodiment, the fourth aspect
Corresponding to the above, the chain 3 has the link plates 12 and 13 and the pin 14 which is a connecting portion connecting the link plates 12 and 13, and the guide roller 17 is arranged so as to be narrower than the distance H between the pins 14 and 14. From each link plate 12, 13 is at least 1
Since it is supported by the individual guide rollers 17, it is possible to prevent the link plates 12 and 13 on both sides from being bent at 14 pins,
The generation of noise can be prevented.

Further, as an effect of the embodiment, the shaft 19 is set to one by the substantially square detent hole 27 and the substantially square detent engagement portion 26.
Since the rotation can be stopped at the position rotated by 80 degrees, the worn portion can be reversed and the non-worn portion can be directed to the chain 3 side.

FIG. 5 shows a second embodiment of the present invention, in which the same parts as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. On the other side, three butting steps 25A, 25A, 25A are formed to form a substantially equilateral triangular detent engagement portion 26A, and the detent engagement portion 26A engages in a substantially equilateral triangle shape. 27A is formed in the other side arm portion 18B of the bracket 19. Therefore, in this example, the shaft 19 can be fixed at a plurality of positions by rotating the shaft 19 by 120 degrees.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, in the embodiment, the rotation stopper can be fixed at the position where the shaft is rotated by 180 or 120 degrees, but the rotation stopper engaging portion and the rotation stopper hole can be formed in a substantially square shape or a substantially regular polygonal shape. Further, the method of fixing the other end of the shaft is not limited to the split pin, and various means can be used. Further, two or more guide rollers may be arranged between the connecting portions.

[0028]

According to the first aspect of the present invention, the dust remover main body having the screen provided in the water channel, the guide roller provided at the front side of the dust remover main body at intervals in the vertical direction, and the guide roller above the guide roller are provided. In a dust remover equipped with an endless chain that is erected on the screen and that rotates along the screen, and a rake that is mounted on the chain and that discharges the dust trapped by the screen, the guide roller is a shaft mounted on a bracket. (EN) Provided is a dust remover which is rotatably provided on the bracket and is configured such that the shaft can be fixed to the bracket at a plurality of rotation positions by rotation, and which can reduce the generation of noise accompanying the chain drive. it can.

According to a second aspect of the present invention, a substantially square detent hole is formed in the bracket, and a detent engagement portion that engages with the detent hole is formed at the end of the shaft.
A hole for inserting the retaining member is bored in the detent engagement portion, and it is possible to provide a dust remover capable of reducing the generation of noise accompanying the chain drive.

According to the third aspect of the invention, the chain has link plates arranged at right and left intervals, and the guide roller is provided with a ridge in the center of the left and right, and guides are provided on both left and right sides of the ridge. A left and right link plates are in contact with the guide roller at a position where an inclined surface is sandwiched between the guide rollers, and a dust remover that can reduce the generation of noise accompanying the chain drive can be provided. .

According to a fourth aspect of the invention, the chain has a link plate and a connecting portion for connecting the link plate, and the guide roller is arranged so as to be narrower than a space between the connecting portions. It is possible to provide a dust remover that can reduce the generation of noise associated with chain driving.

[Brief description of drawings]

FIG. 1 is a side view of a dust remover showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view around a guide roller showing a first embodiment of the present invention.

FIG. 3 is a sectional view showing a usage state of the guide roller and the conveyor chain according to the first embodiment of the present invention.

FIG. 4 is a side view showing a usage state of the guide roller and the conveyor chain according to the first embodiment of the present invention.

FIG. 5 is a side view showing an engagement state of a detent engagement portion and a detent hole according to a second embodiment of the present invention.

FIG. 6 is a side view for explaining wear that occurs on the shaft when the chain, the shaft, and the guide roller are used in the conventional example.

[Explanation of symbols]

1 Dust remover body 2 bar screen (screen) 3 conveyor chains 4 rake 12, 13 Link plate 14 pin (connecting part) 17 Guide roller 18 bracket 19 axes 26, 26A engagement part 27, 27A non-rotating hole 28 Split pin (fixing member) 31 Ridge 32 Guide slope H interval (at connecting part) A waterway

Claims (4)

(57) [Claims] 1. A dust remover main body having a screen provided in a water channel, a guide roller provided at an interval in the vertical direction on the front side of the dust remover main body, and a guide roller installed on the guide roller and attached to the screen. In a dust remover equipped with an endless chain that rotates along with a rake that is mounted on the chain and discharges dust collected by the screen, the guide roller is rotatably provided on a shaft mounted on a bracket. A dust remover characterized in that the shaft is fixed to the bracket at a plurality of rotational positions so that the shaft can be fixed. 2. A substantially square detent hole is bored in the bracket, and a detent engagement portion that engages with the detent hole is formed at an end of the shaft. The dust remover according to claim 1, wherein a hole for inserting the fixing member is provided. 3. The chain has link plates arranged at right and left intervals, the guide roller is provided with a ridge at the center of the left and right, and guide sloping surfaces are provided on both left and right sides of the ridge, 2. The left and right link plates abut on the guide roller at a position sandwiching a line.
The described dust remover. 4. The chain has a link plate and a connecting portion for connecting the link plate, and the guide roller is arranged so as to be narrower than an interval between the connecting portions. The dust remover according to any one of 1.