WO2013048046A1

WO2013048046A1 - Mortar supply apparatus for a concrete pump truck using a motor and a screw

Info

Publication number: WO2013048046A1
Application number: PCT/KR2012/007441
Authority: WO
Inventors: 고영림
Original assignee: 오케이퓨처 주식회사
Priority date: 2011-09-28
Filing date: 2012-09-18
Publication date: 2013-04-04
Also published as: KR101229091B1

Abstract

The present invention relates to a mortar supply apparatus for a concrete pump truck using a motor and a screw, which rotates along the screw that helically rotates, so as to convey a concrete rather than moving the concrete in a straight line, thereby allowing for ease of maintenance and supplying the mortar in an easy manner during construction of a super high-rise building. As the mortar supply apparatus of the present invention uses a rotatable motor instead of using a cylinder that provides a straight linear locomotion, the apparatus may be prevented from directly receiving pressure applied in a downward direction, thus may supply the mortar to upper floors in an easier way during construction of a super high-rise building.

Description

Mortar supply device for concrete pump car using motor and screw

The present invention relates to a mortar supply device for a concrete pump car, and in particular, by using a motor and screw in a conventional way of supplying mortar by using a cylinder to extend parts replacement cycles to improve maintenance functions as well as after work is completed. The present invention relates to a mortar supply device for a concrete pump car using a motor and a screw to facilitate recovery of the mortar remaining in the discharge tube.

As a technology related to a mortar supply device for a concrete pump car, page 2 claim 1 of the "feed piston pump" (Korean Patent Publication No. 10-0958888, Patent Document 1) discloses an apparatus for supplying mortar using a piston unit. have.

Thus, the conventional mortar supply device is to install the cylinder device using the principle of the piston in parallel to supply the mortar by using this force, the ram installed in the cylinder tip is a linear reciprocating motion by hydraulic pressure Since it directly hits the mortar inside the chamber, it is easily damaged, which causes a problem that the replacement cycle of the ram is very short.

In addition, in the case of high-rise buildings, there is a problem in that an expensive cylinder device is required to operate a cylinder at high pressure in order to transfer high mortar to a high floor.

* Prior art literature *

(Patent Document 1) KR 10-0958888 (2010.05.12)

Mortar supply device for a concrete pump car using a motor and a screw of the present invention to solve the problems caused in the prior art, maintenance by transporting while rotating along the spirally rotating screw rather than moving the concrete straight It is to make it easy and to supply mortar easily in the construction of skyscrapers.

Specifically, by using a motor that rotates without using a cylinder that provides a linear motion force is not directly subjected to the pressure of the upper portion to be able to more easily supply mortar to the upper floor during the construction of a high-rise building.

In addition, a packing is installed at the tip of the screw to maintain the seal with the inner wall of the main body, and the packing is supplied with lubricating oil to prevent pressure loss due to a gap between the screw and the main body, while preventing the wear of the screw tip. The screw is rotated smoothly so that the supply of mortar is made smoothly.

In addition, the packing is made of a long rubber material and simply assembled by screwing it together to reduce the time and cost of maintenance by making the unit cost cheaper and easier than the conventional ram replacement.

In addition, by forming a lubricating oil transfer passage for supplying lubricating oil from one side of the foremost shaft to the screw tip, the lubricating oil is smoothly supplied to reduce the wear cycle of the parts.

In addition, by installing an auxiliary case inside the main body to facilitate the cleaning of the mortar cured in the interior and the lubricating oil residues on the inner wall surface to facilitate the supply of the mortar.

In addition, the motor is configured as a bidirectional rotary motor, and by forming a mortar recovery port in the main body to separately discharge the mortar in the discharge tube so that the remaining mortar does not remain in the discharge tube and the main body.

Mortar supply device for a concrete pump car using a motor and a screw of the present invention, in order to solve the above problems, the interior is formed in an empty tube shape, the first opening is formed on one side, the first opening on the opposite side of the first opening A main body having two openings formed thereon and a hopper connector formed at an upper side thereof; A mortar supply hopper having one side connected to the hopper connector of the main body and receiving mortar from the outside to supply the mortar into the main body; A motor connected to the first opening of the main body, the rotation shaft being inserted into the main body toward the second opening; One side is installed in a spiral wrap around the rotation axis of the motor, the other side is spaced apart from the inner wall surface, the other end is formed with a wide inner side and a narrow packing insertion groove on the outer side through the hopper connector according to the rotation of the rotation shaft A screw for transferring the supplied mortar to the second opening side; An insertion part is formed at one side to correspond to the end face formation of the packing insertion groove, and the other side is provided with a main body contact part in close contact with the inner wall of the main body. A lubricating oil filling groove is formed therein to form a lubricating oil filling space therebetween and is filled with lubricating oil, the packing being installed around the other side of the screw; And a discharge pipe connected to the second opening to transfer the mortar discharged through the second opening to the outside.

At this time, a lubricating oil inlet is formed on one side of the rotary shaft, a lubricating oil outlet is formed in the lubricating oil filling groove of the screw, and a lubricating oil inlet is formed to connect the lubricating oil outlet from the lubricating oil inlet. And lubricating oil to the space.

In addition, the main body is characterized in that the auxiliary case configured to be discharged through the second opening is inserted.

In addition, the motor is characterized in that the bidirectional rotary motor.

At this time, the mortar recovery port is formed on one side of the main body to transfer the mortar inside the discharge tube to the main body according to the rotation direction of the motor to be discharged through the mortar recovery port.

According to the present invention, it is easy to maintain and easily supply mortar during construction of a high-rise building by moving the concrete while rotating it along a screw that rotates in a spiral manner instead of moving straight.

Specifically, by using a motor that rotates without using a cylinder that provides a linear motion force is not directly subjected to the pressure of the upper portion it is possible to more easily supply mortar to the upper floors when building a high-rise building.

In addition, a packing is installed at the tip of the screw to maintain the seal with the inner wall of the main body, and the packing is supplied with lubricating oil to prevent pressure loss due to a gap between the screw and the main body, while preventing the wear of the screw tip. As the screw rotates smoothly, the supply of mortar becomes smooth.

In addition, the packing is made of a long rubber material and simply assembled by screwing together, thereby reducing the cost and time required for maintenance by reducing the cost of replacement parts compared to conventional ram replacement.

In addition, by forming a lubricating oil transfer path for supplying lubricating oil from one side of the foremost shaft to the screw tip, the lubricating oil is smoothly supplied, thereby reducing the wear cycle of parts.

In addition, by providing an auxiliary case inside the main body, the mortar is smoothly supplied by cleaning the hardened mortar and the lubricating oil residue on the inner wall surface.

In addition, the motor is constituted by a bidirectional rotary motor, and the mortar in the main body is formed to separately discharge the mortar in the discharge tube so that residual mortar remains in the discharge tube and the main body.

1 is an exploded perspective view showing an embodiment of a mortar supply device for a concrete pump car using a motor and a screw of the present invention.

Figure 2 is an exploded cross-sectional view showing an embodiment of a mortar supply device for a concrete pump car using a motor and a screw of the present invention.

Figure 3 is a cross-sectional view showing a mortar supply device for a concrete pump car using a motor and a screw of the present invention.

Figure 4 is a perspective view showing one embodiment of a screw in the present invention.

* Detailed description of the major symbols in the drawings *

10: main body

11: first opening

12: second opening

13: Hopper connector

13a: first valve

20: Mortar Supply Hopper

30: motor

31: rotating shaft

32: reducer

40: screw

41: Packing insert groove

50: Packing

51: insertion unit

52: body close contact

53: Lubricant Filling Groove

60 discharge tube

70: lube oil inlet

71: lubricating oil outlet

72: lube oil transfer passage

73: lubricant supply pipe

74: connecting member

75: first ball bearing

80: auxiliary case

81: 2nd ball bearing

90: mortar recovery hole

91: second valve

100: lubricant

Hereinafter, a mortar supply device for a concrete pump car using a motor and a screw of the present invention will be described in detail with reference to the accompanying drawings.

Mortar supply device for a concrete pump car using a motor and a screw of the present invention includes a main body 10, mortar supply hopper 20, motor 30, screw 40, packing 50 and the discharge pipe 60 It is composed.

As shown in the drawing, the main body 10 has a hollow tubular shape, and a first opening 11 is formed at one side thereof, and a second opening 12 is formed at an opposite side of the first opening 11. .

The first opening 11 and the second opening 12 are each formed with a flange so as to be coupled to the motor 30 and the discharge tube 60 by bolts and nuts.

In addition, the hopper connector 13 is formed on one side of the upper body 10.

The mortar supply hopper 20 is connected to the hopper connector 13 of the main body 10 and is configured to receive mortar from an external ready-mixed concrete vehicle to supply mortar into the main body 10.

As shown in the drawing, the motor 30 is connected to the first opening 11 of the main body 10, and a rotation shaft 31 is provided at one side thereof, and the rotation shaft 31 has the second opening ( 12) It is inserted in the main body 10 toward the side.

At this time, one side of the motor 30 may be further provided with a known reducer 32 as shown.

Screw 40 is one side is installed in a spiral wrap around the rotating shaft 31 of the motor 30.

In addition, the other side of the screw 40 is spaced apart from the inner wall surface of the main body 10, the other end is formed with a wide inner side and a narrow packing insertion groove 41 on the outer side of the hopper connector according to the rotation of the rotary shaft 31 It is comprised so that the mortar supplied through 13 may be transferred to the 2nd opening part 12 side.

The packing 50 is to prevent wear caused when the tip of the screw 40 abuts the inner wall surface of the main body 10, a gap is generated to prevent the transfer of mortar is not made smoothly. Likewise, the insertion part 51 is formed at one side to correspond to the end face formation of the packing insertion groove 41.

In addition, on the other side of the insertion portion 51, a main body contact portion 52 in close contact with the inner wall surface of the main body 10 is formed.

At this time, in the center of the main body contact portion 52, a lubricating oil filling groove 53 is formed to be inwardly facing the rotation shaft 31 to form a lubricating oil filling space between the inner wall surface of the main body 10 and the lubricating oil 100 is filled. It is.

The packing 50 is preferably made of a flexible material such as a special rubber, and can be easily installed by being wrapped around the other side of the screw 40 by being fitted along the packing insertion groove 41 at the tip of the screw 40. have.

On the other hand, the discharge pipe 60 is connected to the second opening 12 to transfer the mortar discharged through the second opening 12 to the outside, by connecting a flexible pipe to the discharge pipe 60 mortar It is supposed to act as a passage for transporting to a higher floor for construction.

In this configuration, the rotary shaft 31 rotates together with the rotation of the motor 30, and the screw 40 installed around the rotary shaft 31 rotates as the rotary shaft 31 rotates. After the mortar supplied to the hopper through the connector 13 is introduced into the main body 10, the mortar is rotated in a spiral according to the rotation of the screw 40 to move toward the discharge tube 60.

At this time, the tip of the screw 40 is in close contact with the main body 10 by the packing 50 so that the loss of pressure does not occur, the mortar is smoothly transferred.

In particular, the lubricating oil filling groove 53 is formed in the main body tight portion 52 of the packing 50, so that the lubricating oil 100 may damage the packing 50 due to frictional resistance caused by the packing 50 contacting the main body 10. Prevent and close to the inner wall surface can be rotated smoothly.

In this case, in the case of the conventional cylinder type, the expensive ram installed in the cylinder moving straight does not hit the mortar directly, as it is easily damaged by the friction generated while hitting the mortar. It has the advantage of being much easier.

In addition, in order to supply mortar to the high floor, the pressure of the cylinder had to be high. Accordingly, there was a limit to the supply of mortar to a building of a certain height or higher, but as the mortar is transferred by the rotation of the motor 30 as described above, mortar to the high building Since the supply is easy, the performance is better, and by using the motor 30 instead of the high-performance cylinder, the unit price of the product becomes cheaper.

As shown in the above configuration, one side of the rotary shaft 31 is formed with a lubricating oil inlet 70, the lubricating oil filling groove 53 of the screw 40 is formed with a lubricating oil outlet 71 The lubricating oil inlet 70 is formed from a lubricating oil inlet 70 connecting the lubricating oil outlet 71 to the lubricating oil filling space through the lubricating oil inlet 70.

This configuration can be continuously supplied to the lubricating oil filling space can further reduce the wear rate of the packing 50 can be reduced maintenance time.

In order to operate as described above, the connecting member 74 connected to the lubricating oil supply pipe 73 is installed around the rotating shaft 31 around the lubricating oil inlet 70, and the first ball bearing 75 is installed inside the lubricating oil inlet 70. Regardless of the rotation of the rotary shaft 31, the connecting member 74 is preferably capable of supplying the lubricating oil 100 to the lubricating oil inlet 70 without rotating.

On the other hand, when the mortar inside the main body 10 is hardened and stuck to the inner wall surface of the main body 10, as well as the rotation of the screw 40, as well as the mortar stuck to the packing 50 causes friction and packing 50 This can be damaged.

To this end, it is preferable to frequently clean the inside of the main body 10. For this purpose, the auxiliary case 80 configured to be discharged through the second opening 12 may be inserted into the main body 10.

That is, a flange is formed at the front end of the auxiliary case 80 so that the discharge pipe 60 and the flange are butt-coupled to each other to maintain the connection state. When removing the auxiliary case 80 from the inside of the main body 10, bolts and nuts are removed. After removing and discharging the discharge tube 60, the auxiliary case 80 may be pulled out to the second opening 12 and cleaned and inserted again.

At this time, the auxiliary case 80 installed inside the main body 10 may be configured in a rotatable manner rather than a fixed manner to the main body 10.

In this case, damage to the packing 50 may be prevented by reducing friction generated between the packing 50 and the inner wall surface of the auxiliary case 80 due to the rotation of the screw 40.

To this end, a second ball bearing 81 is installed between the inner wall surface of the main body 10 and the auxiliary case 80, and the discharge pipe 60 and the auxiliary case 80 do not have a connection relationship with each other unlike FIG. 3. However, the main body 10 and the discharge pipe 60 may be bolted to each other.

That is, when the rotation shaft 31 and the screw 40 rotates, the auxiliary case 80 has fluidity when the friction occurs in the state where the packing 50 and the auxiliary case 80 of the tip of the screw 40 come into contact with each other. The damage of (50) can be reduced as much as possible.

On the other hand, in the configuration as described above, the motor 30 is preferably composed of a motor 30 that can rotate in both directions.

This is to recover the mortar filled in the discharge tube 60 and the main body 10 in the state where the mortar is supplied through the discharge tube 60, simply reverse the motor 30 in the reverse direction without a separate recovery device as in the prior art It can be rotated to recover mortar again.

At this time, the mortar recovery hole 90 is formed on one side of the main body 10 to transfer the mortar inside the discharge pipe 60 to the main body 10 according to the rotation direction of the motor 30 to the mortar recovery hole 90. Can also be discharged through

That is, typically, the mortar supply hopper 20 is installed on the main body 10, and the mortar recovery hole 90 is installed below the main body 10 to be transferred to the first opening 11 in the main body 10. The mortar is to fall to the outside through the mortar recovery hole (90) to be discharged.

In such a configuration, the hopper connector 13 and the mortar recovery port 90 are preferably configured to selectively open and close the first valve 13a and the second valve 91, respectively.

Mortar supply device for a concrete pump car using the motor and screw 40 of the present invention configured as described above is not only applied to the transfer of concrete mortar, but may be applied to various fields for transferring high viscosity materials under high pressure. will be.

Claims

In the mortar supply device for concrete pump cars,

The inside is formed in a hollow tubular shape, the first opening 11 is formed on one side, the second opening 12 is formed on the opposite side of the first opening 11, the hopper connector 13 on the upper side The main body 10 is formed;

A mortar supply hopper 20 having one side connected to the hopper connector 13 of the main body 10 and receiving mortar from the outside to supply mortar into the main body 10;

A motor 30 connected to the first opening 11 of the main body 10 and having a rotation shaft 31 inserted into the main body 10 toward the second opening 12;

One side is installed spirally wrapped around the rotating shaft 31 of the motor 30, the other side is spaced apart from the inner wall surface of the main body 10, the other end is wide and the outer side is narrow packing insertion groove 41 Is formed is a screw 40 for transferring the mortar supplied through the hopper connector 13 in accordance with the rotation of the rotary shaft 31 to the second opening 12 side;

Inserting portion 51 is formed on one side to correspond to the cross-sectional formation of the packing inserting groove 41, the other side is formed with the main body contact portion 52 in close contact with the inner wall surface of the main body 10, the main body close Lubricating oil filling groove 53 is formed at the center of the part 52 to be inwardly facing the rotating shaft 31 to form a lubricating oil filling space between the inner wall surface of the main body 10, and the lubricating oil 100 is filled therein. A packing 50 wrapped around the other side of the screw 40;

And a discharge pipe 60 connected to the second opening 12 to transfer the mortar discharged through the second opening 12 to the outside.

Mortar supply device for concrete pump car using motor and screw.
The method of claim 1,

A lubricating oil inlet 70 is formed at one side of the rotating shaft 31, and a lubricating oil outlet 71 is formed in the lubricating oil filling groove 53 of the screw 40, and a lubricating oil outlet from the lubricating oil inlet 70. Lubricating oil transfer passage 72 is formed connecting the 71 is characterized in that configured to supply the lubricating oil 100 to the lubricating oil filling space through the lubricating oil inlet 70,

Mortar supply device for concrete pump car using motor and screw.
The method of claim 1,

Inside the main body 10, characterized in that the auxiliary case 80 is configured to be discharged through the second opening 12 is inserted,

Mortar supply device for concrete pump car using motor and screw.
The method of claim 1,

The motor 30 is characterized in that the bidirectional rotary motor,

Mortar supply device for concrete pump car using motor and screw.
The method of claim 4, wherein

Mortar recovery hole 90 is formed on one side of the main body 10 to transfer the mortar inside the discharge pipe 60 to the main body 10 according to the rotation direction of the motor 30 through the mortar recovery hole 90. Characterized in that it can be discharged,

Mortar supply device for concrete pump car using motor and screw.