JP3206572U - Compressed air supply device - Google Patents

Abstract

[PROBLEMS] To provide a compressed air supply that can be carried by a person's shoulders, does not require a temporary construction such as a cableway, and has a discharge amount of compressed air necessary for processing for repairing steel tower steel. Providing equipment. A compressed air supply device in which a plurality of air compressors are connected in parallel to a sub-tank and supplies compressed air from the sub-tank to a load, wherein the air compressor includes an air compressor that compresses air. A drive unit that drives the air compression unit, and a tank unit that receives supply of compressed air from the air compression unit, and is configured to be disassembled into the air compression unit, the drive unit, and the tank unit. The [Selection] Figure 1

Description

  The present invention relates to an apparatus for supplying compressed air, and more particularly to a compressed air supply apparatus for supplying compressed air for sandblasting or metal spraying.

  Conventionally, a power transmission tower has been subjected to anticorrosion treatment by, for example, galvanizing the surface of a steel material during construction. However, the power transmission tower is generally installed in a state exposed to wind and rain, and the plating layer on the surface is consumed under the influence of various corrosive factors in the natural environment, so that repair is required.

For repair, a method of restoring the repaired portion to the original shape by forming a coating layer by metal spraying on the repaired portion is often used. In this metal spraying, a metal material such as zinc or aluminum is heated and melted, and the particles are sprayed onto the repaired portion with compressed air to form a coating layer. In metal spraying, the roughness of the steel material surface before spraying is an important factor for improving the adhesion between the sprayed coating layer and the steel material surface. For example, the required roughness in aluminum / magnesium alloy spraying is required to be 8 μm or more in arithmetic average roughness (Ra) and 50 μm or more in 10-point average roughness (Rz).

Therefore, before the metal spraying, the repaired portion is subjected to sand blasting to appropriately treat rust caused by corrosion and to adjust the roughness of the steel surface to a predetermined roughness. . This sandblasting process is a process in which abrasive particles are mixed with compressed air and sprayed onto a repair site to form a predetermined roughness. In order to perform this sandblasting treatment, a blasting machine that contains abrasive particles and a compressed air supply device that supplies compressed air to the blasting machine are required. With regard to such a compressed air supply device, for example, one disclosed in Patent Document 1 is disclosed.

JP-A-6-159248

  Patent Document 1 discloses an air compressor in which a compressor main body and a motor that drives the compressor main body are fixed to an upper portion of a cylindrical air tank. Therefore, according to the air compressor of Patent Document 1, the weight is the sum of the weight of the air tank, the weight of the compressor body, and the weight of the motor. Here, as an air compressor used as a sandblasting treatment of steel materials of a steel tower as described above, it is necessary to have an air discharge amount of at least 600 L / min.

  In the case of an air compressor having an air discharge rate of 600 L or more per unit, according to the conventional technology, since it is a heavy article exceeding 100 kg, it cannot be transported by human power. Heavy equipment or transport vehicles must be prepared. However, many of the above-mentioned power transmission towers requiring repair have been built for a long time after being built in a mountainous area, for example. Therefore, on the road to the power transmission tower, there is a case where trees are overgrown or a typhoon or the like falls down to block the road, and further, the road is transformed into a steep slope due to cliff collapse.

On such roads, it becomes difficult to install lifting equipment, or transportation vehicles cannot enter, so the work of carrying and sandblasting an air compressor weighing 100 kg or more to the vicinity of the transmission tower is not There was a problem that it would be extremely difficult.
If a cableway or the like is temporarily installed for the installation of a lifting equipment or the entry of a transport vehicle, there is a problem that the cost for repair becomes extremely high.
However, such repairs of mountainous power transmission towers are indispensable for stable power supply to ordinary households and businesses, and their importance increases as the towers age. There is a tendency.

  Therefore, the present invention has been made in view of the above-described conventional problems, and the purpose thereof is to enable transportation on the shoulders of a person, without requiring a temporary construction such as a cableway for transportation to a mountainous area, and also steel tower steel An object of the present invention is to provide a compressed air supply device having a discharge amount of compressed air necessary for processing for repair of the above.

  The invention of claim 1 is a compressed air supply device in which a plurality of air compressors are connected in parallel to a sub tank and supplies compressed air from the sub tank to a load, wherein the air compressor compresses air. A compression unit, a drive unit that drives the air compression unit, and a tank unit that receives supply of compressed air from the air compression unit, and can be disassembled into the air compression unit, the drive unit, and the tank unit It is the compressed air supply device formed.

  The invention of claim 2 is a compressed air supply device according to claim 1, wherein a check valve is arranged in the middle of a pipe connecting the sub tank and the air compressor, and prevents a reverse flow of air in the pipe. It is characterized by providing.

  According to the present invention, a plurality of air compressors are connected in parallel to a sub tank, and the compressed air supply device supplies compressed air from the sub tank to a load. The air compressor compresses air. Part, a drive part for driving the air compression part, and a tank part that receives supply of compressed air from the air compression part, and can be disassembled into the air compression part, the drive part, and the tank part. For example, if the weight of the air compression unit, drive unit, tank unit, and sub-tank is formed with a weight that can be transported by human power, it is a transmission tower that has been built on the slope of a mountain and has passed for a long time. When repairing steel materials for power transmission towers where it was difficult to carry heavy objects around them, disassemble multiple air compressors into air compressors, drive units and tanks, respectively. It can be transported to the mountain area, and it can be transported to the mountains by temporary installation such as cableway. The compressed air supply apparatus which has the discharge amount of the compressed air which is not required and is required for the process for repair of steel tower steel materials can be provided.

  In addition, since the structure is provided with a check valve that is arranged in the middle of the pipe connecting the sub tank and the air compressor and prevents the backflow of air in the pipe, the amount of air discharged between the air compressors Even if there is a variation in the air pressure, the check valve prevents the compressed air supplied to the sub-tank from the air compressor with a large discharge amount from flowing to the air compressor with a smaller discharge amount. It is possible to provide a compressed air supply device that can stably secure a discharge amount of compressed air required for processing for repair.

It is a perspective view explaining the compressed air supply device concerning the embodiment of the present invention. It is a perspective view explaining the air compressor concerning the embodiment of the present invention. It is a disassembled perspective view explaining the air compressor concerning the embodiment of the present invention. It is a perspective view explaining a sub tank concerning an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
The compressed air supply apparatus 10 of this embodiment is provided with the two air compressors 12, the sub tank 14, and the piping 16, as shown in FIG.

As shown in FIGS. 2 and 3, the air compressor 12 includes an air compression unit 20, a drive unit 22, a tank unit 24, a drive belt 26, and the like.
As shown in FIGS. 2 and 3, the air compression unit 20 of the present embodiment includes, for example, a two-cylinder reciprocating pressurization mechanism 20a, and compresses and discharges the sucked air. Further, the reciprocating pressurization mechanism 20a of the present embodiment is fixed on the bottom plate 20b as shown in FIG.

  Next, as shown in FIG. 2, the drive unit 22 includes, for example, a gasoline engine 22 a, and the rotational force obtained by the gasoline engine 22 a is transmitted to the air compression unit 20 via the drive belt 26 and air. The compression unit 20 is driven. In FIG. 1, the code | symbol 22b shows a gasoline tank. The gasoline engine 22a is fixed on the bottom plate 22c as shown in FIGS.

Next, as shown in FIGS. 2 and 3, the tank unit 24 includes two tanks 24 a and casters 24 b that are arranged in parallel and are connected in communication. The tank 24a and the air compression unit 20 are connected by a pipe (not shown), and the compressed air discharged from the air compression unit 20 is supplied to the tank 24a through the pipe.
And the air compression part 20 of this embodiment is designed so that it may have the capacity | capacitance which can discharge about 330L of compressed air per minute, ie, the compressed air discharge amount of about 330L per minute, for example.

As shown in FIG. 3, the air compressor 12 formed in this way is formed so as to be disassembled into an air compression unit 20, a drive unit 22, and a tank unit 24.
More specifically, as shown in FIG. 3, the air compressor 12 includes an installation plate 36 that is welded and fixed to the upper portion of the tank 24 a, and the air compression unit 20 described above is disposed on the installation plate 36. It is fixed with a screw 32 via Further, as shown in FIG. 3, the air compressor 12 includes an installation plate 28 that is welded and fixed to the upper portion of the tank 24a, and the above-described drive unit 22 is placed on the installation plate 28 via the bottom plate 22c. It is fixed with a screw 32.

  Therefore, the air compressor 12 according to the present embodiment is configured such that the driving belt 26, a pipe (not shown) that connects the tank 24a and the air compression unit 20, the screw 32, and the like are removed, The drive unit 22 and the tank unit 24 can be disassembled. Each of the air compression unit 20, the drive unit 22, and the tank unit 24 is formed with a weight of about 20 kg, and can be transported by one person.

Next, as shown in FIG. 4, the sub tank 14 is formed of a tank 14 a having a capacity of approximately 30 L, for example, and includes a discharge pipe 18. As shown in FIG. 3, the discharge pipe 18 is formed by a pipe member communicating with the tank 14 a, and the compressed air in the tank 14 a is discharged through the discharge pipe 18. In FIG. 4, the code | symbol 14b shows the meter which shows the pressure value in the tank 14a.
The tank 24a and the tank 14a of the present embodiment are manufactured from a material having moderate rigidity such as steel, stainless steel, aluminum, and reinforced plastic, and have a pressure resistance capable of withstanding a predetermined internal pressure such as 0.7 MPa. Shall.

  Next, the pipe 16 is formed of a hose member having flexibility and a diameter of about 3 mm to 1 cm, for example. As shown in FIG. 1, the pipe 16 has a base end connected to the tank 24 a of each air compressor 12 and the other end connected to the sub tank 14. Then, the compressed air supplied from the air compressor 12 passes through the pipe 16 toward the sub tank 14.

In addition, the compressed air supply apparatus 10 of this embodiment is provided in the middle of piping 16, as shown in FIG.1 and FIG.4, and is provided with the non-return valve 30 which prevents the backflow of the air in the piping 16. As shown in FIG.
Therefore, there is a variation in the discharge amount between the air compressors 12 such that the discharge amount of one of the two air compressors 12 is smaller than the discharge amount of the other air compressor 12. In addition, since the check valve prevents the compressed air supplied to the sub tank 14 from the air compressor 12 having a large discharge amount from flowing to the air compressor 12 having a small discharge amount, the air required for the sandblasting process or the like The amount can be secured more stably.
Moreover, in FIG.1 and FIG.4, the code | symbol 34 shows an air filter.

As described above, in the compressed air supply apparatus 10 of the present embodiment, a plurality of (two) air compressors 12 are connected in parallel to the sub tank 14, and a known blast machine using the compressed air from the sub tank 14 as a load, The structure can be supplied to a metal sprayer.
Accordingly, when the compressed air supply device 10 of the present embodiment is operated, compressed air of 330 × 2L = 660L per minute can be discharged, so the discharge amount of compressed air required for sandblasting the steel material surface of the power transmission tower Can be secured. In addition, by providing the sub tank 14, even when the discharge amount of the air compressor 12 is reduced in a pulse shape, it is possible to stably secure the discharge amount necessary for the sandblasting process. The number of air compressors 12 may be increased as necessary.

  When the compressed air supply apparatus 10 of the present embodiment is transported to the mountainous area as described above to the power transmission tower, the two air compressors 12 are disassembled into the air compression unit 20, the drive unit 22, and the tank unit 24, respectively. Then, the sub tank 14, the pipe 16, and other tools may be transported with shoulders and assembled into a compressed air supply device near the power transmission tower.

  As described so far, according to the compressed air supply device 10 of the present embodiment, it is possible to carry on the shoulder, transport to the mountain area without the need for temporary construction such as cableway, and repair of steel tower steel The compressed air supply apparatus which has the discharge amount of the compressed air required for the process for this can be provided.

DESCRIPTION OF SYMBOLS 10 Compressed air supply apparatus 12 Air compressor 14 Sub tank 16 Piping 20 Air compression part 22 Drive part 24 Tank part 30 Check valve

Claims (2)

A plurality of air compressors are connected in parallel to the sub tank, and a compressed air supply device that supplies compressed air from the sub tank to a load,
The air compressor is
An air compression unit that compresses air; a drive unit that drives the air compression unit; and a tank unit that receives supply of compressed air from the air compression unit, the air compression unit, the drive unit, and the tank The compressed air supply device is formed so as to be disassembled into a part. The compressed air supply apparatus according to claim 1, further comprising a check valve disposed in a middle of a pipe connecting the sub tank and the air compressor and preventing a back flow of air in the pipe.

Images