KR20210150746A - Kelly bar with multi-stage piping for remicon injection and spraying solidifying agent - Google Patents

Abstract

The present invention relates to a Kelly bar into which multistage pipe is inserted for ready-mixed concrete injection and solidification agent spraying, capable of reducing the size of excavation equipment and making excavation work quicker by installing a multistage pipe for injecting ready-mixed concrete or a solidification agent into a drilling hole, on the inside of the Kelly bar. The Kelly bar having a lower part combined with a bit to be rotated by a driver comprises a multistage rod, a multistage pipe for injecting ready-mixed concrete or a solidification agent into a drilling hole is inserted into the multistage rod, the multistage pipe is formed to be rotated, contracted and expanded together with the multistage rod, and a plurality of transfer holes connected to a lower part of the multistage pipe are formed on the inside of the bit to spray the ready-mixed concrete or the solidification agent into the drilling hole. Therefore, in accordance with the present invention, since the ready-mixed concrete or the solidification agent is injected into the multistage pipe installed on the inside of the multistage rod to be rotated together with the rod, the size of the excavation equipment can be reduced, and also, since the multistage pipe is formed to be contracted and expanded together with the multistage rod, there can be an effect of enabling convenient use and quicker excavation work. Moreover, when the multistage pipe is being removed, there is no risk of contact with the drilling hole and the Kelly bar, which can lead to the prevention of damage, and also, the removal work can become quicker, which can lead to a considerable reduction in time for the excavation work.

Description

Kelly bar with multi-stage piping for remicon injection and spraying solidifying agent

The present invention relates to a Kelly bar installed in an excavator to form a perforation in order to insert a PHC pile into soft ground, and more particularly, a multi-stage pipe for injecting ready-mixed concrete or a solidifying agent inside the perforation is installed inside the Kelly bar. It relates to a Kelly bar in which a multi-stage pipe for injection of ready-mixed concrete and solidifying agent injection is inserted, which reduces the scale of excavation equipment and makes excavation work faster.

1 shows that by operating the arm and the arm cylinder installed in the base machine of the excavator, the height of the drill part can be adjusted to suit the surrounding terrain, thereby greatly improving the maneuverability and mobility, and by operating the winch, only the Kelly bar moves up and down to adjust the length. Therefore, the load acting on the wire and winch is reduced and safety is improved, and since the base machine and the drill part can be used directly combined, there is no need to form and use a large master, combined and separate use is possible, and drilling by miniaturizing the drilling rig The movement and operation of the rig is simplified, and by using a two-speed hydraulic motor and a two-speed speed reducer as the driving device, the number of parts for the driving device is reduced, while the speed is adjusted in multiple stages to be more diversified and adjusted to suit the working situation. It relates to an excavator with an operable drilling rig attached.

Since the excavator can perform the function of a drilling rig without using a master, there is an advantage of miniaturization and light weight. Accordingly, it is possible to easily work in places where it is difficult for a drilling rig to enter due to height restrictions or interference from existing structures, and mobility and maneuverability are improved. It is supported, and the main winch 30 and the auxiliary winch 32 receive less load because only the length of the kelly bar 24 is adjusted by adjusting the length of the wire 34 .

However, in this conventional excavator, since the Kelly bar 24 is rotated by the driving device, the hose (H) for injecting the ready-mixed concrete or solidifying agent inside the perforation is installed on the outside of the Kelly bar 24 by rotation of the hose. (H) was prevented from being twisted and damaged. As a result, the excavation equipment becomes enlarged and there is a risk of damage due to perforation and friction with the Kelly bar 24 when installing or collecting the hose (H), which makes maintenance difficult. there was

The present invention is to solve the above problems, and by installing a pipe for injecting the ready-mixed concrete or solidifying agent inside the perforation inside the Kelly bar to improve the reduction and workability of equipment and multi-stage for injection of ready-mixed concrete and solidifying agent An object of the present invention is to provide a Kelly bar in which a pipe is inserted.

The Kelly bar in which the multi-stage pipe for injection of ready-mixed concrete and solidifying agent injection according to the present invention is inserted, the bit is coupled to the lower side and the Kelly bar rotated by the driving device is made of a multi-stage rod, and the ready-mixed concrete is drilled inside the multi-stage rod. Alternatively, a multi-stage pipe for injecting a solidifying agent is inserted, the multi-stage pipe is configured to rotate, contract, and expand at the same time as the multi-stage rod, and a plurality of transfer holes communicating with the lower side of the multi-stage pipe are formed inside the bit to form a hole It is characterized in that the ready-mixed concrete or solidifying agent is sprayed inside.

According to the Kelly bar in which the multi-stage pipe for injection of ready-mixed concrete and solidifying agent is inserted according to the present invention, the ready-mixed concrete or solidifying agent is injected into the inside of the multi-stage pipe configured to rotate together and installed inside the rod composed of multiple stages. Excavation equipment can be reduced in size, and it is convenient to use and has the effect that the excavation work is made more quickly by being configured to contract and expand together with the multi-stage rod.

In addition, when collecting multi-stage pipes, there is no fear of touching the perforations and the kelly bars, so damage can be prevented, and the time required for excavation work can be greatly saved because it can be collected more quickly.

1 is a front view showing a conventional excavator
Figure 2 is a front view showing an excavator to which the Kelly bar of the present invention is applied;
3 is a cross-sectional view showing a Kelly bar according to the present invention;
4 is a cross-sectional view of a multi-stage pipe according to the present invention;

A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the Kelly bar into which the multi-stage piping for injection of ready-mixed concrete and solidifying agent injection of the present invention is inserted is installed in the base machine 1 and used to form a hole in the ground with soft ground, DSM (Deep Soil) Mixing) method can be used to insert a PHC file into the hole and apply it when replacing soft ground.

The Kelly bar 100 is coupled with a wire 3 to the upper side of the master 2 vertically installed by the base machine 1, and the Kelly bar 100 is composed of multi-stage rods 120, 121 and 122 ( A rod holder 4 is coupled to the lower end of the third rod 122 of 100 to support the Kelly bar 100, and the upper end of the third rod 122 is a driving device 5 for rotating the Kelly bar 100. is provided so that it can be raised and lowered by the cylinder (6).

As shown in FIG. 3 , the Kelly bar 100 of the present invention is configured to be expanded downward or contracted upward, and the rods 120 , 121 , 122 are composed of multi-stage rods 120 , 121 , 122 ), a multi-stage pipe 150, 151, 152 is inserted and installed so as to inject ready-mixed concrete or solidifying agent into the inside of the perforation.

The multi-stage rods 120, 121, and 122 of the Kelly bar 100 show the rods 120, 121, and 122 composed of three stages as an embodiment in the present invention, but the present invention is not limited thereto. Of course, it can be configured by increasing or decreasing the number and length of the rods according to the requirement.

In this way, the multi-stage rod consisting of the first rod 120 , the second rod 121 , and the third rod 122 is configured to be contracted and expanded vertically by the operation of the wire 3 , and is expanded although not shown in the drawing. A fixing part is formed in the connection part so that each rod 120, 121, 122 does not deviate by a load.

A fixing plate 130 having a hole formed in the center is coupled to the upper side of the first rod 120, and the multi-stage pipe 150 as shown in FIG. 5 is inside the multi-stage rods 120, 121 and 122. 151 and 152 are installed through the fixing plate 130. In the present invention, the pipes 150, 151, and 152 composed of three stages are shown, but the length and number of pipes can be increased or decreased as needed. can do.

An input pipe 160 is coupled to the first pipe 150 protruding upward of the fixing plate 130 as shown in FIG. 3, and to the tip of the input pipe 160, ready-mixed concrete or a solidifying agent is injected through a multi-stage pipe. For the input hose 161 is coupled.

In this way, on the outside of the multi-stage pipe consisting of the first pipe 150, the second pipe 151, and the third pipe 152, as shown in the enlarged view of FIG. 5, the multi-stage pipe 150, 151) ( A protective tube 170 for protecting the 152 is coupled, and the protective tube 170 is configured as a corrugated tube to respond organically according to the contraction and expansion of the multi-stage pipes 150, 151, and 152.

A fixing part (not shown) is formed at the connection portion so that the respective pipes 150, 151, and 152 are not separated when the multi-stage pipes 150, 151, and 152 are expanded. ) 151 , 152 and the protective tube 170 are contracted and expanded together with the multi-stage rods 120 , 121 and 122 by the wire 3 .

On the other hand, the kelly bar 100 made of a combination of the multi-stage rods 120 , 121 , 122 and the pipes 150 , 151 , 152 is a first rod 120 and a fixing plate 130 as shown in FIG. 3 . A horizontal rotation bearing 131 is coupled between The input pipe 160 is coupled to the vertical rotation bearing 162 and is fixed to the master 2 by the pipe holder 110 .

And the lower side of the third pipe 152 is coupled to the joint 142, the lower side of the third rod 122 is coupled to the upper side of the joint 142, and the multi-stage rod ( A bit 140 for forming a perforation by rotation of 120, 121 and 122 is coupled.

A plurality of transfer holes 141 communicating with the inner side of the joint 142 and the multi-stage pipes 150, 151, and 152 are radially formed on the outer peripheral surface of the bit 140 and are also formed on the lower side of the bit 140. The ready-mixed concrete or solidifying agent is sprayed downward and sideways together with the rotating bit 140 .

Therefore, when the multi-stage rod 120, 121, 122 rotates, the multi-stage pipe 150, 151, 152 rotates together by the joint 142, and at this time, smooth rotation is performed by the horizontal rotation bearing 131. The input hose 161 is coupled to the inside of the vertical rotation bearing 162 coupled to the first pipe 150 , so that the multi-stage pipes 150 , 151 , 152 do not receive interference from the input hose 16 . It can rotate together with the multi-stage rods 120, 121, and 122 without it, and accordingly, the ready-mixed concrete or the solidifying agent can be easily injected into the bottom part of the perforation through the input hose 161.

In the Kelly bar into which the multi-stage piping for injection of ready-mixed concrete and solidifying agent of the present invention configured as described above is inserted, the multi-stage rods 120, 121, and 122 are expanded as shown in FIG. 4 and the multi-stage piping 150 by the driving device 5 ) (151) and (152) rotate at the same time to form a perforation with the bit 140, and the multi-stage pipe 150, 151, 152 is through the transfer hole 141 of the bit 140 to the inside of the perforation. Ready-mixed concrete or solidifying agent will be sprayed.

Therefore, the present invention is installed on the inside of the rods 120, 121, and 122 made of multi-stage, as the ready-mixed concrete or solidifying agent is injected into the multi-stage pipe 150, 151, 152 configured to rotate together. The scale of the excavation equipment can be reduced, and by being configured to contract and expand together with the multi-stage rods 120, 121, and 122, it is convenient to use and the excavation work is performed more quickly.

In addition, when collecting the multi-stage pipes 150, 151, and 152, there is no fear of touching the drilling or the Kelly bar, so damage can be prevented, and the time required for excavation work can be greatly saved because it can be collected more quickly. There are advantages.

110: pipe holder 120: first rod
121: second rod 122: third rod
130: fixed plate 131: horizontal rotation bearing
140: bit 141: transfer hole
142: joint 150: first pipe
151: second pipe 152: third pipe
160: input pipe 161: input hose
162: vertical rotation bearing 170: protective tube
100 : Keliva

Claims (4)

The bit 140 is coupled to the lower side and the kelly bar 100 rotated by the driving device 5 is composed of multi-stage rods 120, 121 and 122, and the multi-stage rods 120, 121, ( 122) is inserted into the multi-stage pipe 150, 151, 152 for injecting ready-mixed concrete or solidifying agent into the perforation,
The multi-stage pipes 150 , 151 , 152 are configured to rotate, contract and expand simultaneously with the multi-stage rods 120 , 121 and 122 , and the multi-stage pipes 150 , 151 are located inside the bit 140 . A plurality of transfer holes 141 communicating with the lower side of the ) 152 are formed to inject ready-mixed concrete or a solidifying agent into the inside of the perforation, and a multi-stage pipe for injecting ready-mixed concrete and solidifying agent is inserted Kelly bar. The method of claim 1,
The multi-stage pipe for injection of ready-mixed concrete and solidifying agent injection, characterized in that a protective pipe 170 made of a corrugated pipe is coupled to the outside of the multi-stage pipe 150, 151, 152. Kelly bar. The method of claim 1,
A fixing plate 130 is coupled to an upper side of the multi-stage rods 120 , 121 , 122 , and a horizontal rotation bearing 131 is coupled to a lower side of the fixing plate 130 , and protrudes upward of the fixing plate 130 . Ready-mixed concrete injection and solidifying agent, characterized in that the vertical rotation bearing 162 is coupled to the upper side of the multi-stage pipe 150, 151, 152, and the input pipe 160 is coupled to the vertical rotation bearing 162 Kelly bar with multi-stage piping for injection. The method of claim 1,
The lower sides of the multi-stage rods 120 , 121 , 122 and the multi-stage pipes 150 , 151 , 152 are coupled to the upper side of the joint 142 , and the bit 140 is disposed on the lower side of the joint 142 . Kelly bar with multi-stage piping for injection of ready-mixed concrete and solidifying agent characterized in that it is combined.

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