JPH1135134A - Inspection truck in air floating type conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve the inspection of a trough and the block of a cleaning air blow-out hole efficiently without using a manpower. SOLUTION: This conveyer is constituted so that the return side belt 4 after discharging a loaded thing is supported by the trough 12 for return. An inspection truck 20 for running between the trough 12 for return and the return side belt 4 is provided. The inspection truck 20 is provided with a truck frame 21, wheels 22 for rolling on the trough 12 for return, the motor 23 for the wheel 22 and the remote control means 24 for the motor 23. A support roller 25 for lifting and supporting the return side belt 4, a scraper 26 for raking the inner peripheral surface of the trough 12 for return, an illuminating lamp 27, a camera 28 and a telescoping brush 31 are installed on the truck frame 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection cart for an air-floating conveyor. As an air-floating conveyor, the present applicant attaches a carrier-side belt that carries a carrier material such as coal in a shell having a cylindrical cross section, and a trough that supports a return-side belt after discharging. A proposal has been made in which the air blowing holes for floating the belt are opened at an equal pitch. In this air-floating conveyor, the contaminated surface of the belt runs opposite to the return trough, so that particles of the transported substances that have adhered to the belt surface fall or adhere to the return trough, and the transported substance with a large amount of moisture is returned to the return trough. The rate of adhesion to carbon is also increased. If left unchecked, the falling powder will spread over the entire length of the conveyor, blocking the air blowing holes for floating and increasing the load due to the contact between the belt surface and the falling powder, which may cause belt wear, It is necessary to check the powder flouring condition regularly and clean it when there is a large amount.

[0002]

2. Description of the Related Art Conventionally, in order to inspect the inside of the above-mentioned return trough, a gap is provided between the return trough and the belt so that the inside of the return trough can be inspected. For this purpose, the weight of the conveyor is lifted, and a bar or the like is manually inserted between the belt and the trough in a state where tension is not applied to the belt, and the belt is lifted to perform internal inspection.

[0003]

However, in the above-mentioned conventional method, a lot of manpower is required to lift the belt, and materials for lifting and materials for maintaining the space after the lifting are also required. . In addition, the inspection and cleaning of the inside of the trough is performed through the gap between these materials, which results in inefficient inspection and powder removal work. For these reasons, there is a problem that the inspection window is enlarged and the mounting pitch is shortened for ease of workability, which tends to be uneconomical.

[0004] In view of such circumstances, an object of the present invention is to provide an inspection cart that can efficiently inspect a trough and eliminate a blockage of a cleaning air outlet without using human power.

[0005]

According to a first aspect of the present invention, there is provided an air-floating conveyor cleaning apparatus comprising: an endless belt wound around pulleys disposed near an inlet side and an outlet side of a cylindrical shell; It has a carrier trough and a return trough attached in the shell, and a number of air blowing holes for forming an air film formed in each of the troughs. Inspection that runs between the return trough and the return belt on a pneumatic conveyor that supports the return belt after releasing the load by supporting the return belt through the air membrane. A trolley is provided, the inspection trolley includes a trolley frame, wheels mounted on the trolley frame, and rolling on the return trough, and drive wheels of the wheels. Device, remote control means of the driving device, a support roller for lifting and supporting the return side belt attached to the upper surface of the bogie frame, and a scraper for scraping an inner peripheral surface of the return trough. It is characterized by. A cleaning device for an air-floating conveyor according to a second aspect is characterized in that an illumination light for illuminating a return trough is attached to the bogie frame.
According to a third aspect of the present invention, there is provided the cleaning device for an air-floating conveyor, wherein a television camera for photographing a return trough is attached to the carriage frame, and a monitor of the television camera is provided outside the conveyor. The cleaning device for an air-floating conveyor according to claim 4, wherein the bogie frame is provided with a telescopic brush that expands and contracts toward a return trough and scrapes and cleans an air blowout hole formed in the return trough. Features. The cleaning device for an air-floating conveyor according to claim 5, wherein a bogie storage table for storing an inspection bogie is swingably attached to an end of the return trough, and the bogie storage table is positioned in line with the return trough. A rotating means is provided for swinging between the starting position thus set and the storage position inclined obliquely downward with respect to the return trough.

According to the first aspect of the present invention, when the inspection cart is run while lifting the belt with the support rollers, the inside of the trough can be inspected without using any manual labor and without any trouble, and further, using the scraper. Powder dust accumulated on the trough can be removed. This makes inspection and cleaning easier. Therefore, according to the present invention, the inspection cart is run on the return trough, and after checking the powder falling state inside the return trough and the closing state of the air hole for floating, if the accumulation amount is large, the inspection cart is checked. The powder dust accumulated by the scraper of the present invention is scraped, and the powder dusting operation in the trough can be easily performed. According to the second aspect of the present invention, the trough inside the shell, which is a closed space, can be brightly inspected by the illumination lamp, and workability is improved. According to the third aspect of the present invention, since the inside can be photographed by the television camera and can be observed on the monitor outside the apparatus, it is not necessary to look into the inside of the cylindrical shell from the inspection window, so that the inspection work is further facilitated. According to the fourth aspect of the present invention, when powder dust accumulates in the air blowing holes, the powder dust can be scraped off by the extendable brush, so that cleaning can be performed automatically without using manual operation. According to the fifth aspect of the present invention, if the storage table is set to the storage position inclined obliquely downward, the inspection cart does not obstruct the traveling of the belt, and the storage table is moved to the start position that is aligned with the trough. If this is the case, the inspection trolley can smoothly enter between the belt and the trough and travel. Therefore, the operation of the inspection trolley can be smoothly performed.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an inspection trolley and a storage table according to an embodiment of the present invention. FIG. 2 is a sectional view showing the inspection trolley and a return trough 12 taken along a line II in FIG.
4 is an enlarged side view of the inspection trolley, FIG. 4 is an enlarged plan view of the inspection trolley, FIG. 5 is an overall side view of the air levitation type conveyor to which the present invention is applied, and FIG. 6 is an air levitation shown in FIG. FIG. 7 is a partially enlarged plan view of the air-floating conveyor shown in FIG. 6 taken along line VII.

First, the basic structure of an air-floating conveyor will be described with reference to FIGS. In FIG. 5, reference numeral 1 denotes a cylindrical shell having a circular cross section of a conveyor, and a plurality of the cylindrical shells 1 are connected to form an intermediate portion. Although three cylindrical shells 1 are shown in the figure, the number may be two or less or four or more. 2 is a head pulley, 3 is a tail pulley, around which an endless belt 4 is wound. Reference numeral 5 denotes a fan for supplying air for floating the belt, and reference numeral 6 denotes an air pipe.

As shown in FIGS. 6 and 7, the cylindrical shell 1 is
It is composed of an upper shell 1a and a lower shell 1b which are cut along the axial direction and bisected in the diameter direction. A plurality of right and left upper and lower two-stage brackets 8 projecting inward from the both sides of the upper end inner wall of the lower shell 1b and both sides of the middle inner wall are attached at intervals in the axial direction. A support frame 9 is fixed to the upper and lower two upper and lower sides 8 using an angle material.
Of these support frames 9, the carrier trough 11 is detachably attached to the upper left and right support frames 9, and the return trough 1 is attached to the lower left and right support frames 9.
2 is detachably attached.

Each of the troughs 11 and 12 is a trough-shaped member, and has a horizontal flange portion 13 on both side edges. The flange portion 13 is placed on the support frame 9 and connected by bolts. It has become.

At the center of the lower surface of each of the troughs 11, 12, a plurality of air outlets 14 are formed at intervals in the longitudinal direction, and an air duct 15 for supplying air to the air outlets 14 is attached. ing. The air duct 15 is connected to the fan 5 via the air pipe 6 (see FIG. 5). The air supplied from the air duct 15 is ejected upward from the air blowing holes 14 and enters between the belt 4 running on the upper surfaces of the troughs 11 and 12 to form an air film. Is reduced.

Therefore, in the above-mentioned conveyor, when air is supplied to the lower surface of the belt by the air pipe 6 while driving the head pulley 2 and circulating the belt 4,
The belt 4 runs on an air film formed between the belt 4 and the troughs 11 and 12, and can convey articles on the belt with extremely low resistance.

Next, the inspection cart 20 will be described in detail with reference to FIGS. The inspection trolley 20 includes a trolley frame 21, on which wheels 22 and an electric motor 23 as a driving device thereof are attached, so that the inspection trolley 20 travels. Since the wheels 22 travel on the surface of the trough-shaped trough 12, the left and right wheels 22, 22 are opened in an octagonal shape. Electric motor 23
Can be rotated forward, backward and stopped by a wired or wireless remote control device 24.

A support roller 25 is rotatably supported by a bracket at the front end and the rear end of the upper surface of the bogie frame 21, respectively. This support roller 25,
Reference numeral 25 is provided to support the return side belt 4 in a raised state.

A scraper 26 is attached to the front end of the bogie frame 21, and a lower edge of the scraper 26 is convexly curved at the same curvature as the trough 11 so as to contact the inner peripheral surface of the trough 11. The scraper 26 is an air cylinder (not shown) or the like, and is configured to move up and down between a lower position where the lower edge contacts the trough 12 and an upper position raised therefrom. Further, the scraper 26 may be made undulating with the upper end of the scraper 26 as a base point. The scraper 26 allows the trough 12
Powder that has accumulated on the upper surface can be raked.

An illuminator 27 and a camera 28 are mounted on the lower surface of the bogie frame 21 so that images taken by the camera 28 can be viewed on a monitor 29 outside the machine.

An elastic brush 31 is attached to the lower surface of the bogie frame 21. The telescopic brush 31 includes an air cylinder 32 and a needle-like brush 33 attached to the tip of the piston rod. When the air cylinder 32 is extended, the brush 33 protrudes around the air blowing hole 14 formed in the trough 12. Defoliation can be removed.

In FIG. 1, reference numeral 41 denotes a storage table, which is a member having a cross section similar to that of the trough 12 and slightly longer than the inspection cart 20. The storage table 41 is used for the return trough 1.
2 is rotatably attached to a head pulley side end by a hinge 42.

The tip of the storage table 41 is hung by a chain block 43 or the like, and is stored at a storage position inclined obliquely downward from the trough 12 as shown by the solid line, and in a straight line with the trough 12 as shown by the imaginary line. Between the starting position. In the storage position of the storage table 41, the inspection trolley 20 does not hinder the traveling of the belt 4, and in the start position, the belt 4 is lifted by the support rollers 25 of the inspection trolley 20, and the wheels 22 smoothly enter the trough 12. I can do it. A stripper 44 is attached to an end of the storage table 41 so that the inspection cart 20 does not drop from the end even if the storage table 41 is inclined. The means for rotating the storage table 41 is not limited to the chain block 43, but may be an air cylinder or the like.
2 and the storage table 41.

Normally, the inspection cart 20 is stored in the storage table 41, and when checking for powder dust, the storage table 41 is lifted by the chain block 43 or the like to the starting position where the return trough and the storage table are aligned. Then, the belt 4 is lifted by the inspection cart 20. At that time, when the power is supplied to the traveling motor 23 and the illumination lamp 27 and the check cart 20 is caused to run along the return trough 12, it is easy to observe the state inside the return trough 12 from the check window. Further, the inside can be easily observed on the television 28 and the monitor 29.

When a large amount of powder is dropped, the scraper 26 is used.
Can be lowered to the trough surface and run, so that the accumulated dust can be pushed down to the dust collecting chute 35 formed in the trough 12 and pushed out of the trough.

Further, after the powder cleaning is completed, the air outlet 1
In the case where the blockage of 4 has been found, the blockage due to powder falling can be eliminated by sticking the air blowing hole 14 with the extendable brush 31.

[0023]

According to the first aspect of the present invention, the inspection cart is run on the return trough, and after checking the powder falling state inside the return trough and the closing state of the floating air hole,
When the accumulation amount is large, the accumulated dust is scraped off by the scraper of the inspection cart, and the dusting operation in the trough can be easily performed. According to the second aspect of the present invention, the trough inside the shell, which is a closed space, can be brightly inspected by the illumination lamp,
Workability is improved. According to the third aspect of the present invention, since the inside can be photographed by the television camera and can be observed on the monitor outside the apparatus, it is not necessary to look into the inside of the cylindrical shell from the inspection window, so that the inspection work is further facilitated. According to the fourth aspect of the present invention, when powder dust accumulates in the air blowing holes, the powder dust can be scraped off by the extendable brush, so that cleaning can be performed automatically without using manual operation. According to the fifth aspect of the present invention, if the storage platform is in the storage position, the inspection trolley does not hinder the running of the belt, and if the storage trolley is in the starting position, the inspection trolley smoothly enters between the belt and the trough. Can go and run, and the operation of the inspection cart becomes easy.

[Brief description of the drawings]

FIG. 1 is a side view showing an inspection cart and a storage platform according to an embodiment of the present invention.

FIG. 2 is a sectional view showing the inspection cart and a return trough 12 in a sectional view taken along a line II in FIG.

FIG. 3 is an enlarged side view of the inspection cart.

FIG. 4 is an enlarged plan view of the inspection cart.

FIG. 5 is an overall side view of an air-floating conveyor to which the present invention is applied.

6 is an enlarged cross-sectional view of the air levitation conveyor as viewed from the direction of the arrow VI in FIG. 5;

FIG. 7 is a partially enlarged plan view of the air levitation conveyor as viewed from the line VII of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical shell 5 Belt floating fan 6 Air piping 11 Carrier trough 12 Return trough 14 Air outlet 20 Inspection trolley 21 Dolly frame 22 Wheel 25 Support roller 26 Scraper 27 Illumination lamp 28 Camera 31 Telescopic brush 41 Storage base

Claims (5)

[Claims] 1. An endless belt wound around pulleys disposed near the entrance side and the exit side of a cylindrical shell, respectively.
Carrier troughs and return troughs mounted in the cylindrical shell, and a number of air blowing holes for forming an air film formed in each of the troughs, and a carrier-side belt loaded with transported goods is used for the carrier. In a pneumatic conveyor that supports the return side belt after releasing the load by supporting the return side belt via the air film with the trough, the space between the return trough and the return side belt is provided. There is a traveling inspection trolley,
The inspection trolley is mounted on the trolley frame, a wheel mounted on the trolley frame and rolling on the return trough, a drive unit for the wheel, remote control means of the drive unit, and an upper surface of the trolley frame. A check roller for lifting the return side belt, and a scraper for scraping an inner peripheral surface of the return trough. 2. The inspection trolley according to claim 1, wherein an illumination light for illuminating a return trough is attached to the trolley frame. 3. The air levitation conveyor according to claim 1, wherein a television camera for photographing a return trough is mounted on the carriage frame, and a monitor of the television camera is provided outside the conveyor. Inspection trolley in. 4. The carriage frame according to claim 1, further comprising a telescopic brush that expands and contracts toward the return trough and scrapes and cleans an air outlet formed in the return trough. Inspection trolley for airborne conveyors. 5. A carriage storage table for storing an inspection carriage is swingably attached to an end of the return trough, and a start position where the carriage storage table is aligned with the return trough, and a return trough. 2. The inspection cart according to claim 1, further comprising a rotating means for swinging between the storage position and the storage position inclined obliquely downward.