JP2003034426A - Scraper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly drop the concrete conveyed by a belt conveyor device from the belt conveyor at a position before a terminal end part of the belt conveyor. SOLUTION: This scraper device is provided with a conveyor belt supporting plate 29 which is movable on a conveyor frame 13 along the longitudinal direction, and on an upper face of which the conveyor belt 15 can be slidably mounted, and scraper members 41, 42 pressed against an upper face of the conveyor belt 15 mounted on the conveyor belt supporting plate 29 for dropping the conveyed concrete to a side part of the conveyor belt 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scraper device, and more particularly to a scraper device used in a construction site for conveying concrete to a pouring area, and even before reaching the end portion of the belt conveyor. Relates to a scraper device capable of dropping concrete from a conveyor at the position.

[0002]

2. Description of the Related Art At a construction site where concrete is poured, when the construction scale is large and the concrete placing area is large, such as when constructing a concrete dam, the concrete is generally placed by a belt conveyor device. And the concrete is placed.

In the case of a large construction scale, the casting area where the supply of concrete is required is often carried out simultaneously in a plurality of casting areas. In some cases, it may be necessary to drop concrete from the conveyor and transfer it to another conveyor before the end of the supply conveyor device, and change the conveying direction to supply the concrete to the pouring position.

When it becomes necessary to place concrete in a place where the conveyor device is being transported,
It also becomes necessary to drop concrete at the place where the concrete is placed before reaching the end of the conveyor device.

Therefore, conventionally, there has been demanded a means for dropping concrete from a conveyor device for supplying concrete at a portion before reaching the end portion of the conveyor device and placing the concrete at a desired setting place. .

[0006]

By the way, as an apparatus for appropriately dropping a conveyed article from such a conveyor apparatus, for example, various aggregates are conveyed to an aggregate storage bin installed in a concrete kneading plant. There are tripper conveyors, mobile conveyors, etc. that have been conventionally used for loading.

In this case, in the above-mentioned tripper conveyor, as shown in FIG. 7, when a conveyed product is dropped in the middle of the conveyor device 57, a tripper device 58 is attached to the dropping part. The tripper device 58 includes a frame portion 59 that can be fixed to the conveyor frame, and a conveyor belt portion 61 that is fixed to the frame portion 59 and that has an inclined surface that is inclined upward from the conveyor conveying surface 60 by a predetermined angle in the conveyor conveying direction. Having, conveyor device 57
The objects to be conveyed such as various aggregates, which have been conveyed on the conveyor conveying surface 60 of the, are separated from the conveyor conveying surface 60 by the conveyor belt portion 61, and are moved downward from the end portion of the conveyor belt portion 61 of the tripper device 58. It is configured to drop.

The tripper device 58 having the above structure
It is also conceivable to attach the to the conveyor device 57 that conveys the concrete and drop the concrete from the conveyor device 57 at a site before reaching the end of the conveyor.

However, the tripper device 58 has a conveyor belt portion 61 having an inclined surface inclined upward from the conveyor conveying surface 60 by a predetermined angle in the conveyor conveying direction.
Since it is configured to have a predetermined height above the conveyor device 57, the tripper device 58 has an effect of the wind force when a very strong wind blows at the construction site. In some cases, it may be shaken by receiving a wind, and in particular, it was not suitable for use at a construction site where strong winds sometimes blow.

When concrete is conveyed and supplied to the construction site by using the movable conveyor device, the conveyor can be appropriately moved to supply the concrete to a desired construction site. However, there is a drawback that the cost is increased when a plurality of movable conveyors are prepared because a device for movement is required.

Therefore, the technical problem of the invention according to claim 1 is to appropriately drop the concrete conveyed by the belt conveyor device from the belt conveyor at a portion before reaching the end portion of the belt conveyor.

[0012] The technical problem of the invention of claim 2 is, in addition to the problem of the invention of claim 1, to reliably drop concrete on a belt conveyor without leaving it on the belt conveyor.

The technical problems of the inventions of claims 3 and 4 are, in addition to the problems of the invention of claim 1, that the concrete is smoothly dropped while releasing the load generated in the conveying direction of the concrete and acting on the scraper part. Is to let.

In addition to the problem of the invention of claim 2, the technical problem of the invention of claim 5 is that the discharge member can withstand the load of the concrete to be conveyed and can reduce deterioration even during long-term use. It is to provide a scraper device provided with.

The technical problem of the invention according to claim 6 is, in addition to the problem of the invention according to claim 2, that concrete can be surely excluded and that the belt conveyor of the belt conveyor is caused by the interference between the aggregate and the scraper part. An object of the present invention is to provide a scraper device capable of preventing breakage.

In addition to the problem of the invention of claim 2, the technical problem of the invention of claim 7 is to provide a scraper device capable of surely removing and dropping concrete adhering to a belt conveyor. To do.

The technical problem of the invention described in claim 8 is that, in addition to the problems of the invention described in claims 1 to 7, concrete can be more freely provided in a desired portion before reaching the end of the installed conveyor device. Is to drop.

[0018]

In order to solve such a technical problem, in the invention described in claim 1, the end of the belt conveyor device for continuously conveying the concrete to the casting area of the construction site. A scraper device capable of dropping concrete from a conveyor belt in a portion before reaching the section, which is formed to be movable along a length direction on a conveyor rack, and the conveyor belt can be slidably arranged on an upper surface. It is characterized in that it is provided with a conveyor belt support plate portion and a scraper portion which is brought into pressure contact with an upper surface of the conveyor belt arranged on the conveyor belt support plate portion and which allows concrete to be conveyed to drop to the side of the conveyor belt.

Therefore, according to the first aspect of the invention, the scraper device which can be installed along the conveyor mount is provided on the conveyor mount of the belt conveyor device, and at the site where the scraper device is installed. The conveyed concrete is blocked by pressing the scraper member onto the upper surface of the conveyor belt on the conveyor belt support plate, so that the concrete is conveyed to the side of the belt conveyor device. Can be dropped.

As a result, in the invention described in claim 1, the scraper device is arranged at a desired position on the belt conveyor device, and concrete is moved from the conveyor belt at a desired position to the side of the belt conveyor device. Can be dropped.

According to another aspect of the present invention, the scraper portion is composed of a main scraper member and a subscraper member arranged downstream of the main scraper member, and the main scraper member is conveyed. In addition to dropping the concrete, the subscraper member is configured to remove the concrete adhering to the belt conveyor and drop it.

Therefore, in the invention described in claim 2, when the concrete conveyed on the belt conveyor device reaches the position where the scraper device is arranged, first, the main scraper member is moved to the upper surface of the conveyor belt. The contact of the concrete is interrupted, and the conveyance of the concrete is interrupted, and mainly the coarse aggregate and a part of the fine aggregate are dropped to the side of the conveyor device.

Subsequently, the sub-scraper member disposed on the downstream side of the main scraper member comes into contact with the upper surface of the conveyor belt to remove fine aggregate, mortar, etc. still remaining on the surface of the belt conveyor, and to convey the conveyor. Drop it to the side of the device.

As a result, in the invention described in claim 2, in addition to the effect of claim 1, concrete on the conveyor belt can be dropped almost completely to the side of the belt conveyor device.

According to a third aspect of the present invention, the scraper section is disposed obliquely with respect to the concrete conveying direction over the width direction of the conveyor belt, and is provided between the scraper portion and the widthwise end edge of the conveyor belt. A discharge member having a concrete contact surface with an acute angle is provided.

Therefore, according to the third aspect of the present invention, the concrete conveyed on the conveyor belt is provided in the scraper member over all positions in the width direction of the conveyor belt. The concrete conveying path is obliquely blocked so that the concrete contact surface guides in the concrete falling direction, and concrete is dropped to the side of the belt conveyor. In this case, the concrete is discharged from the upper surface of the belt conveyor according to the concrete contact surface of the discharging member installed at an acute angle.

As a result, in the invention described in claim 3, in addition to the effect of claim 1, the scraper member is applied to the scraper member in the concrete conveying direction, which occurs when blocking the conveyed concrete. The load acting and the frictional resistance acting between the discharging member and the conveyor belt can be reduced, and the concrete can be discharged smoothly to the side of the belt conveyor.

In the invention according to claim 4, in the discharging member of the main scraper member, an angle of 30 degrees is formed between the widthwise edge of the conveyor belt and the downstream side surface portion of the discharging member. Are arranged as follows.

Therefore, in the invention according to claim 4, the discharging member of the main scraper member closes the concrete at an angle of 30 degrees with respect to the conveying direction of the concrete conveyed on the belt conveyor. Stopping, concrete is pushed to the side of the belt conveyor according to the discharge member.

As a result, according to the invention of claim 4, in addition to the effect of claim 3, the load acting on the scraper member in the concrete conveying direction, which is generated when the scraper member blocks the concrete, The friction resistance acting between the discharging member and the conveyor belt can be reduced, and the concrete can be discharged smoothly to the side of the belt conveyor.

According to a fifth aspect of the present invention, the discharge member of the main scraper member is formed of an olefin-based polyethylene resin, and the lower end edge portion has a tapered cross section that becomes thinner toward the tip end portion. While being formed in a shape, the tip portion is formed so as to project toward the upstream side in the concrete conveying direction.

Therefore, in the invention according to the fifth aspect, the concrete conveyed by the tip of the main scraper member protruding toward the upstream side in the concrete conveying direction is scooped out to convey the concrete. It can be guided toward you and dropped.

Further, since the main scraper member is formed of an olefin-based polyethylene resin, it is easy to manufacture the discharging member and has a predetermined hardness, so that the discharging member comes into pressure contact with the conveyor belt. Wear can be reduced. Further, since the discharge member is formed of the olefin-based polyethylene resin, the concrete is easily separated from the main scraper member.

Further, since the tip of the main scraper member is formed so as to project toward the upstream side in the concrete conveying direction, a large amount of concrete comes into contact with the main scraper member at a predetermined speed. However, concrete having a predetermined load can be blocked so as to be guided in the falling direction.

As a result, in the invention according to claim 5, there is provided a scraper device provided with a discharging member capable of withstanding the load of conveyed concrete and reducing deterioration even during long-term use. You can

According to a sixth aspect of the invention, the discharge member of the main scraper member is urged by the urging member and adjustably pressed against the conveyor belt.

Therefore, in the invention according to the sixth aspect, since the discharging member is pressed against the belt conveyor with a biasing force, the concrete can be reliably blocked and discharged. In addition, the pressing force of the discharging member to the conveyor belt can be appropriately changed according to the amount of concrete to be conveyed, and the concrete can be discharged with the optimum pressing force. Furthermore, in response to the input of impact from below the scraper member to above, since the biasing member functions as a cushioning part, the aggregate in the concrete is bitten by the scraper part, resulting in damage to the belt conveyor, That situation can be prevented.

According to a seventh aspect of the present invention, the subscraper member has a discharge member arranged along the width direction of the conveyor belt and configured to remove concrete adhering to the conveyor belt. However, the discharge member has a press contact portion that abuts the surface of the belt conveyor in a substantially vertical direction in the width direction of the conveyor belt.

Therefore, according to the invention of claim 7,
After the concrete is dropped to the side of the conveyor belt by the main scraper member, the concrete still adhering to the conveyor belt is scraped off from the conveyor belt by the subscraper member arranged further downstream, and The belt conveyor can be dropped to the side.

As a result, in the invention described in claim 7, the concrete conveyed by the belt conveyor can be surely dropped to the side of the belt conveyor.

According to the invention described in claim 8, the conveyor belt support plate portion and the scraper portion are provided on a frame portion formed as a moving carriage, and the frame portion is rotatably engaged with the conveyor frame. With compatible wheel part,
It is characterized in that it has a drive unit capable of driving the wheel unit, and is configured so as to be capable of self-propelled movement on the conveyor frame by rotating the wheel unit.

Therefore, in the invention described in claim 8, when necessary, the scraper device is self-propelled on the belt conveyor device and is arranged at a desired position, and at that position concrete is laterally conveyed to the belt conveyor device. Can be dropped into.

As a result, according to the invention of claim 8, in addition to the effect of claim 1, the scraper device is quickly arranged at a desired position on the conveyor device, and concrete is appropriately added to the conveyor device. Can be dropped from.

[0044]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a scraper apparatus according to the present invention will be described with reference to FIGS.
This will be described in detail by taking as an example a case where concrete is dropped from one conveyor device to another conveyor device and transferred using the above.

FIG. 1 shows a scraper device 1 according to this embodiment.
0 is a side view, FIG. 2 is a plan view of the scraper device 10 provided in the conveyor device shown in FIG. 1, and FIG.
FIG. 4 is a side view of the scraper device 10 provided in the conveyor device shown in FIG. 1 as seen from a downstream direction of the concrete conveying direction, and FIG. 4 is a side view showing a main scraper member used in the scraper device. And FIG.
FIG. 6 is a side view of a subscraper member used in a scraper device, and FIG. 6 is a similar plan view. In addition, in FIG.1 and FIG.2, the arrow shows the conveyance direction of concrete.

In this embodiment, as shown in FIGS. 1 to 3, below the supply side belt conveyor device 11, the supply side belt conveyor devices 12 are arranged so that their conveying directions are orthogonal to each other. It is located in. Then, the scraper device 10 according to the present embodiment is mounted on the supply-side belt conveyor device 11, and at a predetermined portion, concrete conveyed by the supply-side belt conveyor device 11 is supplied to the supply-side belt conveyor device 12 side. It is configured to be dropped and supplied.

As shown in FIGS. 1 and 3, the supply-side belt conveyor device 11 and the supply-side belt conveyor device 12 are respectively housed in conveyor stands 13 and 14 and inside the conveyor stands 13 and 14, and are shown in the drawings. Conveyor belts 15 and 16 that are wound around a drive roller that is not used to convey an object to be conveyed, and carrier rollers 17 and 1 that are provided in two upper and lower stages around which the conveyor belts 15 and 16 are wound.
8 and.

In this embodiment, the conveyor belts 15 and 16 are so-called trough type conveyor belts as shown in FIGS. 1 and 3, and the upper carrier roller 17 has three widthwise rollers. Roller parts 19, 20, 2
The pair of roller portions 19 and 21 on both end sides in the width direction are arranged such that the outer ends in the width direction are lifted inward in the width direction by a predetermined angle.

Therefore, as shown in FIG. 3, when the conveyor belts 15 and 16 roll by the driving rollers and reach the conveying surface side, the conveyor belts 15 and 16 are arranged on the upper carrier roller 17 described above. Therefore, the conveyor belts 15 and 16 are connected to the three roller portions 19, 20, and 21.
The conveyor belts 15 and 16 are configured so as to have a cross-sectional shape along the direction, and both widthwise end portions are lifted upward, and as a result, a downwardly curved conveyance surface 22 can be formed in the widthwise central portion. Is a conveyor belt 15,1
Conveying surface 2 that is formed at 6 and has a center portion in the width direction curved downward
Place concrete on 2 and transport it.

Further, as shown in FIGS. 1 and 2, in the portion where the supply-side belt conveyor device 11 and the supply-side belt conveyor device 12 are arranged so as to intersect with each other, the width direction of the supply-side belt conveyor device 11 is increased. On one side, a hopper portion 24 having a hopper 23 capable of dropping concrete to the supply-side belt conveyor device 12 side is provided. The upper end opening 25 of the hopper 23 is arranged at a side portion of the conveyor belt 15 of the supply side belt conveyor device 11, and the lower end opening 26 is arranged immediately above the conveyor belt 16 of the supply side belt conveyor device 12.

Further, of the supply side belt conveyor device 12,
On the other side in the width direction of the hopper portion 24, a platform 27 for controlling concrete dropping work by a scraper device is provided so as to project from a frame member 38, and a worker can appropriately monitor on the platform 27.

Scraper device 10 according to the present embodiment
As shown in FIGS. 1 to 3, on the supply-side belt conveyor device 11, the concrete which is installed at the above-mentioned hopper portion 24 and which is conveyed by the supply-side belt conveyor device 11 is supplied to the supply-side belt. It is configured to drop onto the conveyor device 12 via a hopper 23.

The scraper device 10 is installed on the conveyor frame 13 of the supply side belt conveyor device 12 and is movable along the length direction of the conveyor belt 15, and the conveyor belt 15 slides on the upper surface. A conveyor belt supporting plate portion 29 that can be arranged, and a scraper portion 30 that presses against the upper surface of the conveyor belt 20 arranged on the conveyor belt supporting plate portion 29 and can drop the conveyed concrete to the side of the conveyor belt. I have it.

In the present embodiment, the conveyer belt support plate portion 29 is formed by the plane rectangular plate-like frame 28 formed as a moving carriage, and the frame portion 28 is provided with the scraper portion 30. ing.

The conveyor belt supporting plate portion 29 has the conveyor belt 15 at both widthwise end portions on the upstream side in the concrete conveying direction of the conveyor belt supporting plate portion 29.
A pair of left and right conveyor belt guide plates 31, 31 arranged on both sides in the width direction of the conveyor belt for guiding the movement of the conveyor belt 15 to the conveyor belt support plate portion 29 are continuously provided between the conveyor belt guide plates 31, 31. Includes a plurality of support bars 62 for supporting the plurality of conveyor belts 15 from below.
Is provided. Also, the conveyor belt support plate portion 29
On the downstream side of the concrete transport direction, a guide roller 32 is provided for feeding the conveyor belt 15 after the concrete is dropped to the transport surface 22.

Further, on both sides in the width direction of the plate-like frame 28, two wheels on each side are rotatably engaged with the upper edges of both ends in the width direction of the frame material 33 forming the conveyor frame 13. 34, 34, 34, 34 are mounted, and as shown in FIG. 3, an electric motor 35 is provided at the end portion in the width direction of the plate-like frame 28. The electric motor 35 causes the wheels 34, 34, One of the wheels 34, 34
Are configured to be driven via the belt 36.

Since the wheels 34 of the plate-shaped frame 28 are engaged with the upper edges of the frame member 33 forming the conveyor frame 13 in the widthwise direction, the plate-shaped frame 29 is located closer to the conveyor surface 22 of the belt conveyor 15. Is also disposed above, the conveyor belt guide plates 31 and 31 are disposed obliquely toward the conveying surface 22 of the conveyor belt 15 below, and the support members 4 are attached to the upright frame members 39 and 39, which will be described later.
It is supported and fixed via 3, 43.

As a result, in the scraper apparatus 10 according to the present embodiment, the conveyor belt 15 has the above-mentioned conveyor belt guide plates 31 and 3 during concrete transfer.
1 is guided on both sides in the width direction and placed on the upper surface of the plate-shaped frame 29, and concrete is conveyed in the form of being guided by the guide rollers 32 through the plate-shaped frame 29 in the direction of arrow a in FIGS. 1 and 2. To do.

A scraper section 30 is provided above the plate-shaped frame 28, and the scraper section 30 is provided.
Is composed of a main scraper member 41 arranged on the upstream side in the concrete conveying direction and a subscraper member 42 arranged on the downstream side. The main scraper member 41 is for conveying the concrete to be conveyed from the conveyor belt 15. Subscraper member 4 as well as removal
No. 2 cannot be completely removed even by the main scraper member 41, and is configured to remove the concrete adhering to the belt conveyor 15.

A standing frame member 39 is provided on the plate-shaped frame 28. The standing frame member 39 is formed in the shape of a rectangular parallelepiped frame as a whole, and the conveyor belt support plate portion 29 is formed.
Fixed along the length of. Standing frame material 3
A main scraper member fixing rib 49 is slanted over between 9 and 39, and a main scraper member 41 is attached and fixed to the main scraper member fixing rib 49.

As shown in FIGS. 3 and 4, the main scraper member 41 includes a discharge member 44 formed in a generally rectangular plate shape, and two pressing members attached to the upper end of the discharge member 44. 45 and 45 are provided. The discharging member 44 is arranged at a predetermined angle (in the present embodiment, an angle α between the widthwise edge of the conveyor belt 15 and the concrete contact surface 51 of the discharging member 44 is 30 degrees). In this case, the conveyor belt 15 has a length dimension that is arranged over the entire width direction of the conveyor belt 15.

The discharging member 44 is made of an olefin-based polyethylene resin, and the lower end portion 46 is formed in a tapered cross-sectional shape so as to become thinner toward the tip end portion 47, and the tip end portion 47 is made of concrete. It is formed so as to project toward the upstream side in the transport direction. Further, the taper angle β of the tip portion 47 is set to 30 degrees in the present embodiment.

The pressing members 45, 45 are the pressing arms 4
0, 40, and cylinders 48, 48 having a biasing member (not shown) formed of a coil spring that biases the pressing arm 40 toward the tip portion 47 of the discharging member 44. A fixing member 50 is provided on the side of the cylinder 48, and the main scraper member 41 is provided with the fixing member 5.
It is fixed to the main scraper member fixing rib 49 through 0.

As described above, in the discharge member 44 of the main scraper member 41, the angle α between the one end 51 of the conveyor belt 15 on the width direction side and the contact surface 52 of the discharge member 44 is 30 degrees. It is arranged with.

The arrangement and fixing state of the discharging member 44 with respect to the conveyor belt 15 at the angle of 30 degrees is suitable for pushing the conveyed concrete along the contact surface 52 of the discharging member 44 to one side in the width direction. An appropriate angle is applied based on various factors such as the moving speed of the conveyor belt 15, the transport amount of concrete, the viscosity of concrete, the weight of concrete including various aggregates, and the load acting on the discharge member 44 by the concrete. It was decided based on the data obtained from many experiments by humans.

Therefore, the discharge member 44 according to the present embodiment
Is used, the load acting on the main scraper member 41 in the concrete conveying direction, which occurs when the discharging member 44 blocks the concrete, and the friction acting between the discharging member 44 and the conveyor belt 15. Resistance can be reduced, and concrete can be smoothly discharged to the side of the belt conveyor 15.

When the above elements are different, the arrangement angle α of the discharge member 44 of the main scraper member 41 can be appropriately changed and set.

Further, the sub-scraper member 42 is located on the downstream side of the main scraper member 41 in the concrete conveying direction, close to the main scraper member 41, and at the same angle as the main scraper member 41, over the entire width direction of the belt conveyor 15. It is arranged over.

As shown in FIGS. 5 to 6, the subscraper member 42 is formed in a substantially T-shape in plan view, and has a support arm 54 and a fixing member 56 at the tip of the support arm 54.
A discharge member 55 having an abutting portion 57 that is attached via the abutting portion 57 and abuts on the surface of the conveyor belt 15 substantially vertically.
And have. The subscraper member 42 is vertically movably fixed to a side end of the plate frame 28 by a fixing portion 57 provided at a rear end of the support arm 54.

The main scraper member 41 and the sub-scraper member 42 are moved up and down by an appropriate drive unit (not shown), and are located above the conveying surface 22 of the conveyor belt 15 during concrete conveyance in the supply side belt conveyor device 11. The concrete is arranged at a position where it does not hinder the conveyance of concrete, and when the concrete is dropped from the supply side belt conveyor device 11 in the middle, it is pressed against the conveying surface 22 of the conveyor belt 15 at the lower position by the drive unit. The concrete is configured to be pushed out from the transport surface 22 and dropped.

Further, in the scraper device 10 according to the present embodiment, the main main scraper member 4 is used.
The concrete discharge side end 37 of the discharge member 44 of No. 1 is arranged in the upper end opening 25 of the hopper 23 at a position slightly rearward of the central portion in the concrete conveying direction, and the concrete discharge side end 38 of the subscraper member 42 is the above upper end. It is arranged at the rear end of the opening 25 in the concrete transport direction, and is installed so that the concrete on the conveyor belt 15 can be dropped into the hopper 23.

Further, the scraper member 41 and the sub-scraper member 42 are arranged such that the conveyor surface 15 of the conveyor belt 15 of the supply-side belt conveyor device 11 does not interfere with the concrete conveying operation during normal concrete conveyance. Are spaced apart from above. As a result, the concrete is transported on the conveyor belt 15,
When reaching the site where the scraper device 10 is installed, the conveyor belt 15 that moves on the plate-shaped frame 28
Is conveyed toward the end portion of the supply-side belt conveyor device 11.

On the other hand, when it is necessary to transfer concrete from the supply-side belt conveyor device 11 to the supply-side belt conveyor device 12 side at the position before reaching the end of the supply-side belt conveyor device 11. , The main scraper member 41 and the sub-scraper member 42 are pressed against the transport surface 22 of the conveyor belt 15 to prevent the concrete on the conveyor belt 15 from moving. Drop most of the concrete above,
Next, the sub-scraper member 42 is used to convey the conveyor belt 1.
The concrete that still remains on top of the No. 5 is scraped off and put into the hopper 23 in the same manner.

Since the main scraper member 41 and the sub-scraper member 42 have a predetermined weight, no specific drive unit is provided, and when concrete is conveyed, it is separated from the conveying surface 22 by means of a rope or the like, and concrete is dropped. At times, the rope or the like is unfixed manually, and the main scraper member 41 and the subscraper member 42 are lowered to the transport surface 22 of the conveyor belt 15 by their own weight, and fixed to the transport surface 22 pressure contact position manually. You may do it.

The operation of the scraper device 10 according to this embodiment will be described below.

The supply side belt conveyor device 11 has
A scraper device 10 is installed, and the scraper device 10 is arranged such that the conveyor belt 15 of the supply side belt conveyor device 11 is wound around a conveyor belt support plate portion 29 formed by a plate frame 28. Therefore, when the driving roller (not shown) of the conveyor belt 15 of the conveyor frame 13 is operated and the conveyor belt 15 performs the conveying operation, the conveyor belt 15 is installed on the conveyor belt supporting plate portion 29 of the scraper device 10. Move over. In this case, in the present embodiment, the conveyor belts 15 and 16 are trough type conveyors,
Both end portions in the width direction are lifted upward to form a conveying surface 22 curved downward in the center portion in the width direction. When the conveyor belt 15 is arranged on the conveyor belt support plate portion 29, the conveyor belt 15 is It is elastically deformed to form a flat transport surface 22.

Further, as described above, the main scraper member 41 and the sub-scraper member 42 convey the concrete of the supply side belt conveyor device 11 so as not to hinder the concrete conveying work during concrete conveyance. The belt 15 is arranged above the conveying surface 22 so as to be spaced apart therefrom, and in this state, the concrete is conveyed on the conveyor belt 15.

Then, the scraper device 1 is transferred from the supply-side belt conveyor device 11 to the supply-side belt conveyor device 12.
When the concrete is dropped and transferred at a site before the terminal end of the supply side belt conveyor device 11 by using 0, the electric motor 35 of the scraper device 10 is operated to move the scraper device 10 on the conveyor belt 15. The scraper device 10 mounted on the supply-side belt conveyor device 11 is moved to a position where the hopper 23 is provided and the supply-side belt conveyor device 12 intersects, and the scraper device 10 is fixed at the position.

In this case, as described above, in the main scraper member 41, the discharge member 44 has the one end 51 in the width direction of the conveyor belt 15 and the downstream side surface portion 5 of the discharge member 44.
The angle between 2 and 30 is arranged with 30 degrees,
As shown in FIG. 2, the concrete discharge side end portion 37 of the discharge member 44 of the main scraper member 41 is arranged at the upper end opening 25 of the hopper 23, slightly toward the rear in the central portion in the concrete conveying direction.
The concrete discharge side end 38 of 2 is the upper end opening 25.
Is located at the rear end of the concrete transport direction.

After that, the drive unit is operated to lower the main scraper member 41 and the sub-scraper member 42 to press the discharge member 44 and the discharge member 55 onto the conveying surface 22. In this case, an urging member such as a coil spring, which constitutes the pressing member 45 provided on the main scraper member 41, causes the discharging member 44 to move to the conveyor belt 1.
The transfer surface 22 of No. 5 is pressed with an appropriate pressing force. The “appropriate pressing force” here means that concrete is transferred to the transport surface 22.
The pressure is such that it can be discharged from the top and does not hinder the conveying movement of the conveyor belt 15.

The pressing operation of the main scraper member 41 blocks the movement of the concrete on the conveying surface 22 on the conveyor belt 15, is pushed out by the main scraper member 41, and drops to the left in the conveying direction of the conveyor belt 15. . The dropped concrete enters the hopper 23 through the upper end opening 25, and from the lower end opening 26 the conveyor belt 1 of the supply-side belt conveyor device 12.
Drop on 6.

Further, the concrete which cannot be dropped from the conveyor belt 15 by the main scraper member 41 and adhered to the conveyor belt 15 is removed from the conveyor belt 15 by the subscraper member 42 and similarly dropped to the hopper 23. .

Therefore, in the scraper device 10 according to the present embodiment, the concrete on the conveyor belt 15 of the supply side belt conveyor device 11 is scraped by the scraper device 1.
It is removed by 0 and falls.

In this case, in the scraper device 10 according to the present embodiment, the discharging member 44 has an angle formed between the widthwise side edge 51 of the conveyor belt 15 and the concrete contact surface 52 of the discharging member 44. Since α is arranged at 30 degrees, the load acting on the scraper member 41 in the concrete conveying direction, which occurs when the main scraper member 41 blocks the concrete, and the discharging member 4
4 and the frictional resistance acting between the conveyor belt 15 and the concrete can be discharged smoothly to the side of the belt conveyor 15.

In this embodiment, the case where concrete is transferred from the supply-side belt conveyor device 11 to the supply-side belt conveyor device 12 has been described as an example.
The present invention is not limited to the above-described embodiment, and the supply-side belt conveyor device 11 may be arranged so as to drop the supply-side belt conveyor device 11 directly to the concrete pouring position and pour concrete.

In the present embodiment, the discharge member 4 described above is used.
Since No. 4 is formed of an olefin-based polyethylene resin, it has predetermined hardness and wear resistance required for the main scraper member 41, and also has good mortar peelability.

Further, the lower end portion 46 of the discharge member 44 is formed in a tapered cross-sectional shape so as to become thinner toward the tip end portion 47, and the tip end portion 47 projects toward the upstream side in the concrete conveying direction. Since the concrete conveyed by the tip portion 47 is removed by being scooped out, the concrete on the surface of the conveyor belt 15 can be reliably removed.

Further, since the discharging member 44 is pressed against the conveyor belt 15 by the pressing member 45, the concrete aggregate to be conveyed is caught between the discharging member 44 and the conveyor belt 15. Even in the case where the discharge member 44 is caught, the pressing member 45 can absorb the input of the upward force of the discharge member 44, and as a result, the discharge member 44 and the conveyor belt 15 can be connected to each other. It is possible to prevent the situation in which the conveyor belt 15 is cut due to the biting of the aggregate.

In the present embodiment, the discharge member 4 described above is used.
Although 4 is described as an example in which it is formed of an olefin-based polyethylene resin, it is not limited to the above-mentioned embodiment, and the material forming the discharge member 44 may be a material having a predetermined hardness and durability. If necessary, it can be changed.

Further, the main scraper member 41 is
The discharge member 44 has been described by taking as an example the case where the angle between the one width direction side edge 51 of the conveyor belt 15 and the downstream side surface portion 52 of the discharge member 44 is arranged at 30 degrees.
The present invention is not limited to the above embodiment, based on various factors such as the moving speed of the conveyor belt 15, the transport amount of concrete, the viscosity of concrete, the weight of concrete including various aggregates, and the load acting on the discharging member 44. Discharge member 4
The arrangement angle of 4 can be changed as appropriate.

Further, the urging force of the pressing member 45 can be appropriately changed depending on the size of the aggregate contained in the concrete, the shape of the aggregate, the rock quality of the aggregate, and the like.

In the present embodiment, both the main and sub scraper members 41, 42 are of the one-sided type, but the concrete discharge side ends 37, 38 of the main and sub scraper members 41, 42 are placed on the upper surface of the conveyor belt. On the other hand, by using a V-shaped one, and by directing the tip of the mountain toward the loading side, concrete can be dropped on both sides in the width direction of the conveyor belt.

[0093]

According to the invention described in claim 1, the scraper device is arranged at a desired position on the belt conveyor device, and concrete is dropped from the conveyor belt at a desired position to the side of the belt conveyor device. Can be made.

According to the invention of claim 2, in addition to the effect of claim 1, concrete on the conveyor belt can be dropped almost completely to the side of the belt conveyor device.

According to the invention of claim 3, in addition to the effect of claim 1, a load acting on the scraper member in the concrete transport direction, which is generated when the scraper member blocks the concrete to be transported. The friction resistance acting between the discharging member and the conveyor belt can be reduced, and the concrete can be discharged smoothly to the side of the belt conveyor.

According to the invention of claim 4, in addition to the effect of claim 3, the load acting on the scraper member in the concrete conveying direction, which is generated when the scraper member blocks the concrete, and the discharging member. It is possible to reduce the frictional resistance acting between the belt and the conveyor belt, and it is possible to smoothly discharge the concrete to the side of the belt conveyor.

According to a fifth aspect of the present invention, the discharge member of the main scraper member is formed of an olefin-based polyethylene resin, and the lower end edge has a tapered cross section that becomes thinner toward the tip. While being formed in a shape, the tip portion is formed so as to project toward the upstream side in the concrete conveying direction.

According to the fifth aspect of the present invention, it is possible to provide a scraper device provided with a discharging member that can withstand the load of concrete to be conveyed and reduce deterioration even during long-term use.

According to the sixth aspect of the invention, since the discharging member is pressed against the belt conveyor with a biasing force, the concrete can be reliably blocked and discharged. In addition, the pressing force of the discharging member to the conveyor belt can be appropriately changed according to the amount of concrete to be conveyed, and the concrete can be discharged with the optimum pressing force. Furthermore, in response to the input of impact from below the scraper member to above, since the biasing member functions as a cushioning part, the aggregate in the concrete is bitten by the scraper part, resulting in damage to the belt conveyor, That situation can be prevented.

According to the seventh aspect of the invention, the concrete conveyed by the belt conveyor can be surely dropped to the side of the belt conveyor.

According to the invention of claim 8, claim 1
In addition to the effects described, the scraper device can be quickly placed at a desired position on the conveyor device, and concrete can be appropriately dropped from the conveyor device.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a scraper device according to the present invention.

FIG. 2 is a plan view showing an embodiment of a scraper device according to the present invention.

FIG. 3 is a side view showing an embodiment of a scraper device according to the present invention.

FIG. 4 is a side view showing an embodiment of the scraper device according to the present invention and showing a main scraper member.

FIG. 5 is a side view showing a sub-scraper member, showing an embodiment of the scraper device according to the present invention.

FIG. 6 is a side view showing a subscraper member, showing an embodiment of the scraper device according to the present invention.

FIG. 7 is a side view of a conveyor device provided with a tripper device.

[Explanation of symbols]

10 scraper device 11 Supply side belt conveyor device 12 Supply side belt conveyor device 13 Conveyor stand 14 Conveyor stand 15 Conveyor belt 16 conveyor belt 17 Carrier roller (upper) 18 Carrier roller (lower) 19 Roller part 20 Roller part 21 Roller part 22 Transport surface 23 hopper 24 hopper section 25 Top opening 26 Lower end opening 27 platforms 28 Plate frame 29 Conveyor belt support plate 30 scraper section 31 Conveyor belt guide plate 32 Guide roller 33 frame material 34 wheels 35 electric motor 36 belt 37 Concrete discharge side end 38 Concrete discharge side end 39 Standing frame material 40 pressing arm 41 Main scraper member 42 Subscraper member 43 Support member 44 Discharge member 45 Pressing member 46 bottom edge 47 Tip 48 cylinders 49 Main scraper member fixing rib 50 fixing member 51 Edge in the width direction 52 Concrete contact surface 53 upstream side 54 Support arm 55 Discharge member 56 Fixed member 57 Conveyor device 58 Tripper device 59 frame 60 Conveyor transport surface 61 Belt conveyor section

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ryotaro Kawada             2-10-26 Fujimi, Chiyoda-ku, Tokyo             Within Ta Construction Industry Co., Ltd. F term (reference) 3F070 AA03 BD01 EA24 EE03                 3F072 AA03 GG11 KA01 KA05 KE13                       KE14 KE15 KE21                 4G056 AA06 CE00

Claims (8)

[Claims] 1. A scraper device capable of dropping concrete from a conveyor belt at a site before reaching the end of a belt conveyor device that continuously conveys concrete to a casting area of a construction site, A conveyor belt supporting plate portion that is movably formed along a length direction and on which the conveyor belt can be slidably arranged, and press-contacts the conveyor belt upper surface arranged on the conveyor belt supporting plate portion. ,
A scraper device comprising: a scraper unit capable of dropping the conveyed concrete to the side of the conveyor belt. 2. The scraper section is composed of a main scraper member and a sub-scraper member arranged on the downstream side of the main scraper member, the main scraper member dropping the concrete to be conveyed and the sub-scraper member. The scraper device according to claim 1, wherein the scraper member is configured to remove the concrete adhering to the belt conveyor and drop the concrete. 3. The concrete abutting surface, wherein the scraper portion is arranged obliquely with respect to the concrete conveying direction over the width direction of the conveyor belt, and an acute angle is formed between the scraper portion and a width direction end edge of the conveyor belt. The scraper device according to claim 1, further comprising a discharge member having a. 4. The discharge member of the main scraper member is arranged such that an angle of 30 degrees is formed between a widthwise edge of the conveyor belt and the concrete contact surface of the discharge member. The scraper device according to claim 3. 5. The discharge member of the main scraper member is formed of an olefin-based polyethylene resin, and a lower end edge portion thereof is formed in a tapered cross-sectional shape so as to become thinner toward a tip end portion, and the tip end portion is formed. The scraper device according to claim 2, wherein the part is formed so as to project toward the upstream side in the concrete conveying direction. 6. The discharge member of the main scraper member is
The scraper device according to claim 2, wherein the scraper device is biased by a biasing member and pressed against the conveyor belt. 7. The sub-scraper member has a discharge member arranged along the width direction of the conveyor belt and configured to remove concrete adhering to the conveyor belt. The scraper device according to claim 2, further comprising an abutting portion that abuts a surface of the belt conveyor in a width direction of the conveyor belt. 8. The conveyor belt support plate portion and the scraper portion are provided on a frame portion formed as a moving carriage, and the frame portion is a wheel portion rotatably engageable with the conveyor frame, and the wheel portion. 2. The scraper device according to claim 1, further comprising a drive unit capable of driving a unit, the unit being configured to be capable of self-propelled movement on the conveyor frame by rotating the wheel unit.