KR200300871Y1 - Wear plate in concrete pumping device - Google Patents

Abstract

The present invention relates to a wear plate 12 of a concrete pumping device, which is attached to the inner wall surface of the hopper 103 for accommodating and agitating the concrete, and a pair of concrete for sucking the concrete and then forcing it back to the hopper 103 side Wear plate 12 of the concrete pumping apparatus which is rotated alternately between the cylinders 104a and 104b in the hopper 103 to be in surface contact with the ends of the S pipes 105 communicating with the concrete cylinders 104a and 104b. In the wear plate 12, a pair of wear plates 12a and 12b are formed to be bonded to each other, and the through holes of the wear plates 12a and 12b and the hopper 103 which are in surface contact with the S-pipe 105. The wear plates 12a and 12b in contact with the portion are made of a wear-resistant composite material, and the wear plates 12a and 12b are formed with a lubricating oil injection hole 19 and a lubricating oil passage 20 for the inflow of the friction lubricant. It is easy to process and manufacture, reduce the manufacturing cost, A body that will facilitate.

Description

Wear plate in concrete pumping device

The present invention relates to a wear plate of a concrete pumping device, and more particularly, to a wear plate of a concrete pumping device that is easy to process and fabricate, reduce manufacturing costs, and is easy to replace when worn.

In general, a concrete pump truck is a equipment used in the construction site, the equipment that receives the concrete transported by the ready-mixed concrete truck and pushes it far or high to where it is to be poured through the concrete transport pipe.

In such a pump truck, concrete enters the concrete cylinder and is pushed by the piston into the concrete water pipe. The force pushing the piston is transmitted from the plunger cylinder operated by the hydraulic oil from the hydraulic pump. There are two concrete cylinders and a plunger cylinder, respectively, so that the concrete can be conveyed while alternately repeating the suction and the conveying stroke.

For example, in the conventional concrete pump truck, as shown in FIG. 4, a frame-shaped boom 102 (boom) in which the concrete transport pipe 101 is fixed to the rear portion of the concrete pump truck is folded, and this boom ( As the 102 is unfolded, the concrete transport pipe 101 is extended so as to be able to pump up to the point where the concrete is poured. In addition, a concrete pumping device is installed at the lower portion of the rear portion of the concrete pump truck to receive and stir the concrete transported from the ready-mixed concrete and then pump the concrete through the concrete transport pipe 101.

This concrete pumping device, as shown in Figure 5, the hopper for receiving the concrete transported in a funnel shape with an open top, (hopper), the concrete transport pipe again after sucking the concrete contained in the hopper 103 It consists of two concrete cylinders 104a and 104b which are pumped to 101, and an S pipe 105 which flows the concrete conveyed from the concrete cylinders 104a and 104b directly to the concrete transportation pipe 101.

The inside of the hopper 103 has a blade-shaped screw shape and a stirring device is provided to stir the concrete conveyed from the racon as the screw rotates. Two concrete cylinders 104a, Two through-holes are formed in communication with each other 104b), and the concrete discharge hole communicating with the concrete transport pipe 101 is formed in the other inner side wall.

The concrete cylinders 104a and 104b are configured to allow the concrete piston to reciprocate to suck the concrete from the hopper 103 and to push it back. The force pushing the piston is two hydraulic pressures operated by the hydraulic oil from the hydraulic tank 106. It is operated by pumps 107a and 107b. The hydraulic pumps 107a and 107b and the drive cylinders 110a and 110b are connected to the hydraulic pipes 108, respectively, so that the concrete sucked in one concrete cylinder 104a or 104b is pushed by the concrete piston and pushed to the other concrete cylinder. Concrete 104 can be sucked into 104a and 104b.

Here, the hydraulic fluid flows from the hydraulic cylinder 108 to the drive cylinders 110a and 110b on the side where the concrete is pumped, and pushes the hydraulic pistons inside the drive cylinders 110a and 110b to push the concrete ingots into the hydraulic pistons. The oil enters the other drive cylinders 110a and 110b through the cylinder connecting pipe 109 so that the concrete can be sucked into the hydraulic cylinder. The reciprocating motion of these pistons is made repeatedly by changing the direction of the hydraulic oil coming from the hydraulic pumps 107a and 107b by limit switches at both ends so that the concrete can be continuously fed.

Meanwhile, an S-pipe having an S-shape for connecting two through-holes communicating with the concrete cylinders 104a and 104b opposed to both sides of the inner wall surface of the hopper 103 and the concrete discharge hole communicating with the concrete transport pipe 101 ( 105 is rotated by two flanger cylinders (111a, 111b) so that one end is attached to the concrete discharge hole and the other end can be connected to both through holes alternately. At the end of the S-pipe 105, a ring-shaped wear ring 18 is fitted on the inner circumference of the S-pipe 105, and the pressurized concrete leaks between the wear ring and the end of the S-pipe 105 to the outside of the tube. The sealing ring is fitted to prevent the damage and to maintain a gap between the wear ring and the S-pipe 105. The sealing ring is partially protruded in the radial direction, and the wear ring 118 is supported by the jaw formed at the end of the S pipe 105 while the protruding protrusion is in contact with the wear ring. In addition to maintaining a certain gap with the ends, it is possible to prevent the pressurized concrete from leaking outside the tube.

In the through-hole portion in which the S-pipe 105 rotates and communicates alternately, as shown in FIGS. 6, 7 and 8, two through-holes conforming to the through-holes of the inner wall surface of the hopper 103 on the plate surface. A wear plate 112 on which 117 is formed is attached. The wear plate 112 is formed in a plate shape and an annular wear ring 118 inserted into the S-pipe 105 is inserted into the S-pipe 105 at one side of the through-hole 117 of the plate surface, and the wear ring 118 passes through the wear ring 118. By being matched to the ball is in close contact with the inner wall surface of the hopper 103 is to maximize the efficiency when pumping.

Further, the wear plate 112 is in sliding contact with the wear ring 118 inserted into the end of the rotating S-pipe 105, so that the wear plate 112 is subjected to strong erosion by the high-pressure concrete that is slip friction and pressurized. Thus, in order to prevent this, the wear plate 112 is welded to the surface itself using a high manganese electrode or the like, and then precisely ground and polished to increase wear resistance.

However, the conventional wear plate 112 has a problem in that manufacturing and processing is difficult, expensive and difficult to replace when worn.

Accordingly, the present invention has been made to solve the above problems, it is an object of the present invention to provide a wear plate of a concrete pumping device that is easy to process and fabricate, manufacturing cost is reduced and easy to replace when worn.

In order to achieve the above object, the present invention is attached to the inner wall surface of the hopper 103 for accommodating and agitating concrete, and alternately between a pair of concrete cylinders in which the concrete is sucked and then pumped back to the hopper side in the hopper. In the wear plate of the concrete pumping device which is in surface contact with the end of the S pipe which is rotated to communicate with each concrete cylinder, the wear plate is formed by a pair of wear plates are coupled to each other, wear plate and hopper in surface contact with the S pipe The wear plate contacting the through-hole portion of the wear is made of a wear-resistant composite material, the wear plate (12a, 12b) wear of the concrete pumping device, characterized in that the lubricating oil injection hole and the lubricating oil flow path for the inflow of the friction lubricant oil is formed Achieved by the plate.

Here, when a pair of wear pins are coupled by bolting, it becomes much easier to replace the worn one side wear plate.

Accordingly, the wear plate can be easily processed and manufactured, and the manufacturing cost can be reduced. Then, only the damaged wear plate can be easily removed and replaced with a new wear plate.

1 is a perspective view of a wear plate according to the present invention.

FIG. 2 is an exploded cross-sectional view taken along line AA ′ of the wear plate constituting the wear plate of FIG. 1;

3 is a cross-sectional view of the wear plate of FIG. 2 assembled;

4 is a side view of the concrete pumping truck,

Figure 5 is an enlarged perspective view of the concrete pumping device of Figure 4,

6 is a perspective view of a conventional wear plate,

7 is a front view of FIG. 6,

8 is a side view of FIG. 7.

Explanation of codes on main parts of citizens

12- wear plate 12a, 12b- wear plate

17- Through Hole 19- Lubricant Injection Hole

103- Hopper with 20-Lubricant

104a, 10tb concrete cylinder 105-S pipe

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a wear plate 12 according to the present invention, FIG. 2 is an exploded cross-sectional view taken along line AA ′ of the wear plates 12a and 12b constituting the wear plate 12 of FIG. 1. It is sectional drawing of the wear plate 12a, 12b of FIG. 2 assembled. As shown in these drawings, the wear plate 12 according to the present invention is installed on the concrete pump truck of Figure 4 is attached to the inner wall surface of the hopper 103 for receiving and stirring concrete. Outside the hopper 103, with reference to Figure 5, the concrete cylinders 104a and 104b for suctioning and then pumping the concrete are provided, and two through holes are formed in the inner wall surface of the hopper 103. The wear plate 12 is attached to the part. One side of the wear plate 12 is attached to the concrete discharge hole formed on the inner wall surface of the hopper 103 and the other side is alternately connected to the through hole side by the concrete pumped from the concrete cylinder 104a, 104b to the concrete discharge hole side It is made to surface-contact with the edge part of the S pipe 105 which flows.

The shape of the wear plate 12 is formed in a plate shape, the through-hole 17 is formed in the plate surface and is matched with the through-holes, the pair of wear plates 12a, 12b is fastened to the bolt 21 is made of mutual coupling As can be seen, both wear plates 12a and 12b are made of a wear resistant composite material that is easy to process, so that the wear plates 12a and 12b may not be easily worn even when subjected to strong friction by high-pressure concrete flowing inside the pipe.

In addition, the wear plates 12a and 12b are provided with a lubricating oil injection hole 19 and a lubricating oil passage 20 for the inflow of the lubricating oil, thereby preventing the strong frictional force from being generated by injecting the lubricating oil to the friction surface.

By such a configuration, the wear plate 12 according to the present invention can be easily processed and manufactured compared to the prior art and the manufacturing cost can be reduced. In addition, if one of the wear plates 12a and 12b of the wear plate 12 is damaged during the concrete pumping operation, only the damaged wear plates 12a and 12b can be simply removed and replaced with new wear plates 12a and 12b. Will be.

Accordingly, the processing and fabrication of the wear plate 12 may be facilitated and the manufacturing cost may be reduced. Then, only the damaged wear plates 12a and 12b can be easily removed and replaced with new wear plates 12a and 12b.

As described above, according to the wear plate 12 of the concrete pumping device according to the present invention, the processing and manufacturing is easy, the manufacturing cost is reduced, there is an effect that can be easily replaced when worn.

Claims (1)

It is attached to the inner wall surface of the hopper 103 for accommodating and agitating the concrete, and between the pair of concrete cylinders 104a and 104b for sucking the concrete and then forcing it to the hopper 103 in the hopper 103. In the wear plate 12 of the concrete pumping device which rotates alternately in surface contact with the end of the S pipe 105 which interlocks with each concrete cylinder (104a, 104b), The wear plate 12 is formed by a pair of wear plates 12a and 12b coupled to each other, and through holes of the wear plates 12a and 12b and the hopper 103 which are in surface contact with the S pipe 105. A wear plate (12a, 12b) in contact with the portion is made of a wear-resistant composite reel, the wear plate (12a, 12b) is formed with a lubricating oil injection hole 19 and the lubricating oil path 20 for the inflow of friction lubricant oil Wear plate 12 of the concrete pumping device, characterized in that.