JP2001182039A - Dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust collector capable of reducing generation of a sound caused by chain driving. SOLUTION: A guide roller 17 is arranged at an interval in the vertical direction on the front side of the dust collector body. A conveyor chain 3 is installed on this guide roller 17. The guide roller 17 is rotatably arranged on a shaft 19 installed on a bracket 18. The shaft 19 is constituted on the bracket 18 to be fixable to stop rotation in plural rotary positions by a rotation stopping engaging part 26 of the shaft 19 and a rotation stopping hole 27 of the bracket 18. When the chain 3 side of the shaft 19 is abraded by long-term use, the shaft 19 is fixed to stop rotation in the other rotary position, and an abraded part is dislocated from the chain 3 side to smoothly rotate the guide roller 17 again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a dust remover, and more particularly to a dust remover having a chain.

[0002]

Conventionally, as a dust remover of this type, Japanese Patent Publication No. 45-24432 discloses that a conveyor chain is lifted from a lower driven chain wheel along the front surface of a lattice and guided by a guide chain wheel. There is disclosed a dust remover which is bent rearward and descends through an upper drive chain wheel. However, since the guide chain wheel meshes with the chain, a squeak sound is easily generated at the time of driving. Therefore, in order to solve such a problem,
Japanese Patent Application Publication No. 14494 discloses a front surface of a dust remover frame including a screen provided in an oblique direction to a length direction of a water channel and a rake mounted on a conveyor chain, the rake being 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 connected to each other by link plates and pins. (Claims for utility model registration) There is a dust remover. In this dust remover, the conveyor chain smoothly rotates while being guided smoothly by the good rotation of a plurality of guide rollers, and the noise caused by the chain drive is reduced compared to the conventional case. can do.

In the dust remover disclosed in Japanese Utility Model Publication No. 4-14494, a guide roller is provided on a mounting bracket via a shaft. An outer peripheral surface of the guide roller guides a link plate of the conveyor chain. A groove is formed. A notch groove is formed at one end side of the shaft, and the rotation of the shaft is regulated by inserting a rotation preventing plate member into the notch groove and fixing the plate member to the bracket with screws. (Publication 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 detented state. This will be explained with reference to FIG.
Is applied from above to the guide roller 103 which is rotatably provided on the shaft 102, so that a long period of use causes a partial
This causes a problem in that the rotation of the guide roller 103 does not go smoothly, and a rotation noise is easily generated.

Further, 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 as described above, the left and right dimensions of the guide roller are increased. It was difficult to reduce the size of the guide roller.

[0005] By the way, the above-mentioned dust remover is disclosed in
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,
The link plate on both sides of the pin is easily bent between the guide rollers by its own weight, which causes a drive noise in the chain. In order to prevent this, unnecessarily high tension must be applied to the conveyor chain. If the chain is unnecessarily stretched, there is a problem that the durability of the chain is reduced.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a dust remover capable of reducing the generation of noise caused by driving a chain.

[0007]

According to the first aspect of the present invention, there is provided a dust remover main body having a screen provided in a water channel, a guide roller provided at a front side of the dust remover main body at intervals in a vertical direction, In a dust remover having an endless chain mounted on the guide roller and rotating along the screen, and a rake mounted on the chain and discharging dust trapped on the screen, the guide roller is a bracket. The bracket is rotatably provided on a shaft mounted on the bracket, and the shaft can be stopped and fixed to the bracket at a plurality of rotation positions.

According to the first aspect of the present invention, if wear occurs on the chain side of the shaft due to long-term use, the shaft is stopped and fixed at another rotational position, and the worn portion is shifted from the chain side. The guide roller can be smoothly rotated again.

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

According to the second aspect of the present invention, by rotating the shaft and inserting the detent engaging portion into the detent hole,
The shaft can be prevented from rotating at a plurality of rotation positions on the bracket, and the end of the shaft can be fixed by inserting a fixing member into the hole.

According to a third aspect of the present invention, the chain has link plates arranged at right and left intervals, and the guide roller is provided with a ridge at the center in the left and right direction, and guides the ridge on both the left and right sides. An inclined surface is provided, and the left and right link plates abut on the guide roller at positions sandwiching the ridge.

According to the third aspect of the present invention, the left and right link plates abut against the guide rollers at the positions on both sides of the ridge, and the left and right link plates sandwich the ridge at the center by the inclined guide surface. You will be guided to the location. Therefore, the guide roller does not need to be provided with a portion for regulating the position of the link plate on the outside in the left-right direction of the link plate, so that the size of the guide roller in the left-right direction 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 the interval between the connecting portions. .

According to the fourth aspect of the present invention, since the link plate is supported by at least one guide roller, it is possible to prevent the link plate from bending at the connecting portion.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show the first embodiment of the present invention.
As shown in the embodiment, as shown in the figure, a dust remover main body 1 includes a bar screen 2 and a right and left conveyor chain 3 which are provided in the width direction of the water channel A and provided 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 provided on the support base 6, and a driving 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 mounted thereon, and the rake 4 mounted on the conveyor chain 3 is trapped by the bar screen 2 for refuse and the like. Scrape up.

The conveyor chain 3 has a pair of inner link plates 12 and 12 and a pair of outer link plates 13 and 13.
Are connected in the length direction by pins 14. A plurality of guide rollers 17 made of hard nylon, gunmetal having excellent corrosion resistance to fresh water, seawater, and the like are rotatably disposed on both front plates 16 of the main body 1 of the dust remover. The guide roller 17 is provided with a shaft 19 removably on a substantially U-shaped bracket 18, and is rotatably provided on the shaft 19. The guide roller 17 is provided with a shaft insertion hole 20, 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.
In communication with an inlet 22A opened at the other end of 19, this inlet 22
A lid 23 is detachably screwed to A. An oil seal (not shown) is provided on both sides of the shaft insertion hole 20 with the storage chamber 21 interposed therebetween, so that the lubricating oil in the storage chamber 21 does not leak outside. One arm 18A of the bracket 18
The shaft 19 has a through hole 24 through which the shaft 19 can rotate.
The other side of the bracket 18 forms a detent engaging portion 26 by the abutting step portions 25, 25, and a substantially rectangular detent hole 27 into which the detent engaging portion 26 engages is formed in the other arm portion 18 </ b> B of the bracket 18. Has been drilled. In this example, the rotation preventing hole 27 is substantially rectangular, has a planar inner peripheral surface parallel to the upper and lower sides, and connects both sides of the upper and lower inner peripheral surfaces with an arc inner peripheral surface. Then, the other side arm portion 18B comes into contact with the abutting step portions 25, 25.
Further, a hole 29 for inserting a split pin 28 serving as a fixing means is formed in an end side of the detent engaging portion 27, and the detent engaging portion 27 is inserted into the detent hole 27 to be inserted. The split pin 28 is inserted into the hole 29 located at the position indicated above, and the end 28A of the split pin 28 is opened and opened on both sides to prevent the split pin 28 from coming off. Then, the bracket 18 is pivoted by the abutting step 25 and the split pin 28.
A retaining fixing means for fixing the retaining member 19 in a retaining state is formed. In this state, one side of the shaft 19 is supported by the insertion hole 24.

A ridge 31 is provided around the center of the outer periphery of the guide roller 17 in the left-right direction. Guide sloping surfaces 32, 32 are provided on both left and right sides of the ridge 31 so as to decrease toward both sides. The outer interval between the guide inclined surfaces 32, 32 is set to be substantially the same as or slightly smaller than the inner interval between the inner link plates 12, 12. The distance h between the guide rollers 17 is set smaller than the distance H between the adjacent pins 14 of the conveyor chain 3.

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

Next, the operation of the above configuration will be described. When dust in the water channel A is scraped up, the rotation of the motor 7 is transmitted to the driving sprocket 8, and the driving sprocket 8,
The conveyor chain 3 guided by the driven sprocket 10 and the guide sprocket 42 rotates, and the rake 4 lifts up dust. In this case, since the conveyor chain 3 is guided while being in contact with the outer periphery of the plurality of guide rollers 17, the rotation of the guide rollers 17 causes the conveyor chain 3 to rotate smoothly. Further, since the distance h between the guide rollers 17 is smaller than the distance H between the adjacent pins 14 of the conveyor chain 3, the link plates 12, 13 are always supported by the guide rollers 17, so that the conveyor 14 The bending of the chain 3 can be prevented, and the generation of noise due to the bending can be prevented. In addition, the conveyor chain 3 does not need to have an excessive tension, and stable driving can be performed for a long period of time. Then, the link plates 12, 13 abut against the guide roller 17, and the right and left link plates 12, 12, 13, 13 abut the guide roller 17 at positions where the ridges are sandwiched by the guide inclined surfaces 31, 31, 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 restrict the position by sandwiching the link plates 12 and 13 from both sides, and the guide roller 17 can be downsized. It becomes possible.

In this way, stable driving of the conveyor chain 3 is possible. By the way, during driving, a load is applied to the guide roller 17 from the conveyor chain 3 and the shaft 19
Is worn on the side of the conveyor chain 3 that contacts the guide roller 3 due to long-term use. Here, when the split pin 28 is pulled out, the detent engaging portion 26 of the shaft 19 can be pulled out from the detent hole 27 of the bracket 18, and as shown by the arrow in FIG. The worn part is on the lower side, the unworn perfect circular part is on the upper side, and the detent engaging part 26 is inserted into the detent hole 27 to be in the detent state.
Then, the shaft 19 is fixed to the bracket 18 by retaining the split pin 28. 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, 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 according to the first aspect. A guide roller 17 provided, a conveyor chain 3 which is an endless chain which is installed on the guide roller 17 and rotates along the screen 2, and discharges dust attached to the chain 3 and captured by the screen 2. In the dust remover provided with the rake 4, the guide roller 17
The shaft 19 attached to the shaft 19 is rotatably provided, and the bracket 19 is configured so that it can be stopped and fixed at a plurality of rotation positions on the bracket 18. Therefore, if wear occurs on the chain 3 side of the shaft 19 due to long-term use, By rotating the guide roller 17 at another rotational position and displacing the worn portion from the chain 3 side, the guide roller 17 can be smoothly rotated again, and the generation of driving noise can be reduced.

Further, as described above, in the present embodiment, claim 2
In response to the above, a substantially rectangular detent hole 27 is formed in the bracket 18, and a detent engaging portion 26 that engages with the detent hole 27 is formed at the end of the shaft 19, Since the hole 29 for inserting the split pin 28 serving as a fixing member is formed in the portion 26, the shaft 19 is rotated so that the detent engaging portion 26 is rotated.
By inserting the shaft 19 into the bracket 18, the shaft 19 can be prevented from rotating at a plurality of rotational positions. Further, by inserting the split pin 28 into the hole 29, the end of the shaft 19 can be fixed.

As described above, according to the present embodiment, claim 3
In response to the above, the chain 3 has link plates 12, 12, 13, 13 arranged at intervals on the left and right.
Are provided with ridges 31 at the center in the left and right directions, and guide inclined surfaces 32, 32 on both left and right sides of the ridges 31. The guide roller 17 is positioned on the left and right link plates 12, 12, 13, 13 abuts, the left and right link plates 12, 12, 13, 13 abut the guide roller 17 at the positions on both sides of the ridge 31, and the left and right link plates 12, 12, 13, 13 are inclined to guide. Surface 32, 32
As a result, the protrusion 31 is guided to a position sandwiching the center. Therefore, there is no need to provide a portion on the guide roller 17 for regulating the position of the link plate 12, 12, 13, 13 outside the link plate 12, 12, 13, 13 in the left-right direction. Can be suppressed, the overall dimensions can be suppressed, and the height can be reduced.

As described above, according to the present embodiment, claim 4
In response to the above, the chain 3 has link plates 12 and 13 and a pin 14 which is a connecting portion connecting the link plates 12 and 13, and the guide roller 17 is arranged to be narrower than the interval H between the pins 14 and 14. From each link plate 12 and 13
Since it is supported by the individual guide rollers 17, it is possible to prevent the link plates 12, 13 on both sides from bending at the pin 14 position,
Generation of noise can be prevented.

Also, as an effect of the present embodiment, the shaft 19 is formed by a substantially rectangular detent hole 27 and a substantially rectangular detent engaging portion 26.
Since the rotation can be stopped at the position rotated by 80 degrees, the worn portion can be reversed, and the unworn portion can be directed to the chain 3 side.

FIG. 5 shows a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and the 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 engaging portion 26A, and a substantially equilateral triangular shape into which the detent engaging portion 26A engages. Is formed in the other arm portion 18B of the bracket 19. Accordingly, in this example, the shaft 19 can be stopped and fixed at a plurality of positions rotated 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 detent can be fixed at a position where the shaft is rotated by 180 or 120 degrees, but the detent engaging portion and the detent hole may be formed in a substantially square or 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, there is provided a dust remover body having a screen provided in a water channel, a guide roller provided at a front side of the dust remover body at an interval in the vertical direction, and And a rake mounted on the chain and rotating along the screen, and a rake mounted on the chain and discharging garbage captured by the screen, wherein the guide roller has a shaft mounted on a bracket. The dust remover is provided so as to be rotatable, and is configured to be able to stop and fix the shaft to the bracket at a plurality of rotational positions, and to reduce the generation of noise due to chain driving. it can.

According to a second aspect of the present invention, a substantially rectangular detent hole is formed in the bracket, and a detent engaging portion that engages with the detent hole is formed at an end of the shaft.
A hole for inserting a retaining member is formed in the rotation preventing engaging portion, and a dust remover capable of reducing generation of noise due to chain driving can be provided.

According to a third aspect of the present invention, the chain has a link plate arranged at an interval on the left and right, and the guide roller has a ridge at the center in the left and right direction, and guides the ridge on both left and right sides. An inclined surface is provided, and the left and right link plates abut on the guide roller at positions sandwiching the ridge, so that it is possible to provide a dust remover capable of reducing generation of noise due to chain driving. .

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 the interval between the connecting portions. Further, it is possible to provide a dust remover capable of reducing generation of noise due to chain driving.

[Brief description of the 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 the first embodiment of the present invention.

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

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

FIG. 5 is a side view showing a second embodiment of the present invention, showing a state in which a detent engaging portion and a detent hole are engaged with each other.

FIG. 6 is a side view for explaining abrasion occurring on a shaft when a chain, a shaft, and a guide roller are used in a conventional example.

[Explanation of symbols]

 1 Dust remover 2 Bar screen (screen) 3 Conveyor chain 4 Rake 12, 13 Link plate 14 Pin (connecting part) 17 Guide roller 18 Bracket 19 Shaft 26, 26A engaging part 27, 27A Non-rotating hole 28 Split pin (fixed) Parts) 31 Ridge 32 Guide inclined surface H interval (of connecting part) A Waterway

Claims (4)

[Claims] 1. A dust remover main body having a screen provided in a water channel, a guide roller provided in the front side of the dust remover main body at intervals in the up-down direction, and mounted on the guide roller, In a dust remover provided with an endless chain that rotates along with a rake that is attached to the chain and discharges debris captured by the screen, the guide roller is rotatably provided on a shaft attached to a bracket. A dust remover characterized in that the shaft can be stopped and fixed to the bracket at a plurality of rotation positions. 2. A substantially rectangular detent hole is formed in the bracket, and a detent engaging portion engaged with the detent hole is formed at an end of the shaft. 2. The dust remover according to claim 1, wherein a hole for inserting the fixing member is formed. 3. The chain has link plates arranged at right and left intervals, the guide roller has a ridge at the center in the left and right directions, and a guide inclined surface on both left and right sides of the ridge. The left and right link plates abut against the guide roller at a position sandwiching the strip.
The dust remover as described. 4. The chain according to claim 1, wherein 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 the above.