KR20160116497A - Casing rotator being able to drill with reverse circulation - Google Patents

Abstract

The present invention relates to a casing rotator including a reverse circulation excavation function and, more specifically, relates to a casing rotator capable of performing a reverse circulation excavation function to crush bedrock. According to the present invention, the casing rotator comprises: a casing, a plurality of drill rod pipes, a key plate, and a rotator assembly unit. The drill rod pipe is assembled in a row and is inserted into the casing to be connected to a lower part of a swivel. The key plate is connected to an end of the drill rod pipe to be detached. The rotator assembly unit comprises: a decelerating gear unit decelerating and transmitting a driving speed of a driving motor; a clamp body having a through hole in which the casing is able to be inserted, wherein the clamp body is connected to the decelerating gear unit to rotate by the decelerating gear unit; a casing holding unit holding the casing by being inserted into one side of the through hole of the clamp body; and a pipe holding unit holding the key plate by being inserted into the other side of the through hole of the clamp body. According to the present invention, the casing rotator includes a reverse circulation excavation function, thus not requiring an additional reverse circulation excavator. As such, the casing rotator is able to perform a casing rotation work, an earth and sand discharge work, and a bedrock excavation work using one device; thereby the casing rotator reducing work time and initial investment costs as purchases for additional devices are not necessary. Moreover, the casing rotator remarkably reduces a generation of noise in a construction site, and provides consistency of earth and sand discharge disposal; thereby improving work efficiency.

Description

[0001] The present invention relates to a casing rotator having a reverse circulation rolling function,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing rotator having a reverse circulating compaction function, and more particularly, to a casing rotator capable of carrying out a function of counter-circulating excavators to break a rock.

The casing rotator is an equipment for foundation, and it is one of various equipment for putting the casing under the ground. Although it is relatively easy to secure the verticality of the casing, it has been preferred in the construction site. However, since the equipment price is higher than that of the casing oscillator performing the same operation and the torque, the press-in and the pulling force are not large, Which is required for construction.

However, geologic conditions are relatively simple, and they are continuously used at sites where light loads are possible.

Japanese Patent Registration No. 10-0758113 discloses a method of constructing a large-diameter pile in-situ in an underwater rock by using such a casing rotator.

In order to perform the rocking work, the casing is put under the ground by using the casing rotator, and the underground rock excavation is carried out using the reverse circulation drilling or the like disclosed in the registered patent No. 10-0693285, The rock fragments were discharged.

That is, in the conventional case, the casing rotator is used to perform the casing work, the casing rotator is removed, and the reverse rocking excavator is used to perform the rock excavation and the soil discharge operation. Therefore, in the conventional case, since both the casing rotator and the reverse osmosis furnace are required, the cost of the equipment is high and the initial input cost is high. Since all of the equipment must be supplied to the site, There was a problem.

The present invention is intended to solve the above problems. SUMMARY OF THE INVENTION It is an object of the present invention to provide a casing rotator having a reverse circulating compaction function.

A casing rotator according to the present invention includes a casing, a plurality of drill rod pipes, a key plate, and a rotator assembling means. The drill rod pipe is assembled in a row and inserted into the casing to be coupled to the lower portion of the swivel. The key plate is detachably coupled to one end of the drill rod pipe. Wherein the rotator assembling means includes a reducer unit for reducing the driving speed of the driving motor, a clamp body having a through hole into which the casing can be inserted, and coupled to the reducer unit so as to be rotatable by the reducer unit, A casing grip portion inserted into one side of the through hole of the clamp body to grip the casing, and a pipe grip portion inserted into the other side of the through hole of the clamp body to grip the key plate.

In the above-described casing rotator, it is preferable that the clamp body is formed such that one side of the through hole is inclined. In this case, the casing holding portion includes a wedge clamp that can be inserted into one side of the through hole, and a clamp restraint member that inserts the wedge clamp into the through hole so that the wedge clamp can grip the casing.

In the casing rotator, it is preferable that the pipe gripping portion includes a fixing block and a coupling ring. The fixing block may be inserted into the other side of the through-hole, and a key groove may be formed in one side of the key block. The coupling ring couples the fixed block to the clamp body.

Preferably, in the casing rotator, the key plate is formed at an intermediate portion of the drill rod pipe. In this case, the fixed block is further formed with a key passage hole which is slidably inserted through the key groove so that the key plate formed in the drill rod pipe can be inserted therethrough.

In addition, in the casing rotator, it is preferable that the pipe grasping portion further includes a fixed cover which can be detachably attached to the fixed block so as to cover the key plate inserted into the key groove.

Preferably, the casing rotator further includes a base frame, a guide post, an upper frame, a lower frame, and a cradle. The guide posts are installed in the base frame. The upper frame rotatably supports the clamp body and is fixed to one end of the guide post. The lower frame is mounted such that the wedge clamp is fixed and can slide along the guide posts. The cradle is fixed to the upper end of the guide post to mount the swivel.

In the casing rotator, the clamp restraint member may include a clamping cylinder having one end fixed to the lower frame and the other end fixed to the upper frame so that the wedge clamp can be inserted into the clamp body desirable.

According to the present invention, since the casing rotator has the function of the reverse circulation rolling function, a separate reverse circulating oyster cycle is not required. Thus, casing rotation, soil discharge and rock excavation can be treated as one equipment. Therefore, the working time is shortened and the initial input cost is reduced because no separate equipment is required to be purchased. In addition, it is possible to drastically reduce the generation of noise at the site, and to improve the work efficiency by making the discharge processing of the soil more consistent.

1 is a conceptual view of an embodiment of a casing rotator according to the present invention;
Figure 2 is a partial enlarged view of the embodiment shown in Figure 1;
3 is a cross-sectional view of the fixed block viewed from the AA side in FIG.

1 to 3, an embodiment of a casing rotator according to the present invention will be described.

A casing rotator according to the present invention includes a casing 10, a drill rod pipe 12, a key plate 14, a base frame 16, a guide post 18, an upper frame 20, A frame 22, a cradle 24 and a rotator assembling means 30.

The casing (10) is inserted into the drill hole.

A plurality of drill rod pipes 12 are assembled in a line and inserted into the casing 10 and coupled to the swivel.

The key plate 14 serves to enable the rotator assembling means 30 to rotate the drill rod pipe 12 and is detachably coupled to one end of the drill rod pipe 12. [ That is, after the drill rod pipe 12 is assembled and inserted into the casing 10, the key plate 14 is engaged with the upper end of the drill rod pipe 12 located at the uppermost position.

Meanwhile, the key plate 12a may be formed at an intermediate portion of the drill rod pipe 12 according to the embodiment. This allows not to form the key plate 12a in all the drill rod pipes 12, but may form the key plate 12a in some drill rod pipes 12 as necessary.

The base frame 16 is formed so that it can be placed on the ground to form the excavation hole.

The guide post 18 is installed in the base frame 16 and can be expanded and contracted by having a stretching cylinder inside.

The upper frame 20 is fixed to the upper end of the guide post 18. The lower frame 22 is slidably mounted along the guide posts 20 between the upper frame 20 and the base frame 16. [ The holder 24 is fixed to the upper end of the guide post 18 so as to mount the swivel 26 and is movable up and down to adjust the height of the swivel 26.

The rotator assembling means 30 serves to rotate the drill rod pipe 12 or the casing 10. To this end, the rotator assembling means includes a reduction gear unit 31, a clamp body 33, a casing grasping portion 35 and a pipe grasping portion 39.

The reduction gear unit 31 is operated by a driving motor (not shown) and decelerates the driving speed of the driving motor. At this time, it is preferable that the reduction gear unit 31 can decelerate to two stages. That is, when the casing 10 is rotated, it is driven at a low speed in order to obtain a high torque, and is driven at a high speed when the drill rod pipe 12 is rotated.

The clamp body 33 is formed with a through hole 34 into which the casing 10 can be inserted and is coupled to the reduction gear unit 31 so as to be rotatable by the reduction gear unit 31, And is rotatably supported. The lower portion of the through hole 34 is formed to be inclined so that the wedge clamp 36 of the casing holding portion 35 can be inserted therein and the upper portion of the through hole 34 is formed so that the fixing block 40 of the pipe holding portion 39 can be inserted And is inclined.

The casing grasp portion 35 serves to grasp the casing 10 so as to rotate the casing 10. To this end, the casing grasp portion 35 is provided with a wedge clamp 36 and a clamp restraint member 38. The wedge clamp 36 is inserted into the lower portion of the through hole 34 of the clamp body 33. The clamp restraining member 38 serves to insert the wedge clamp 36 into the through hole 34 of the clamp body 33 so that the wedge clamp 36 can grasp the casing 10. For this purpose, the clamp restraint member 38 is formed of a clamping cylinder, one end is fixed to the lower frame 22, and the other end is fixed to the upper frame 20. When the clamping cylinder is contracted, the wedge clamp 36 is inserted into the through hole 34 of the clamping body 33 to fix the casing 10, and when the clamping cylinder is extended, the wedge clamp 36 is lowered to the casing 10).

The pipe gripping portion 39 serves to grasp the drill rod pipe 12 so as to rotate the drill rod pipe 12. To this end, the pipe grasping portion 39 includes a fixed block 40, a coupling ring 42 and a fixed lid 44.

The fixed block 40 is formed with a through hole so that the drill rod pipe 12 can be inserted therein and inserted into the upper portion of the through hole 34 of the clamp body 33. The fixed block 40 is formed with a key groove 40a through which the key plate 14 can be inserted and assembled. Both the key plate 14 coupled to one end of the drill rod pipe 12 and the key plate 12a formed in the middle portion of the drill rod pipe 12 can be inserted into the key groove 40a. The fixed block 40 is formed with a key passage hole 40b penetrating through the key groove 40a in a direction perpendicular to the key groove 40a so that the key plate 12a can be inserted therethrough. The drill rod pipe 12 formed with the key plate 12a can be inserted into the casing 10 through the key passage hole 40b even if the fixed block 40 is mounted.

The coupling ring 42 serves to fix the fixing block 40 to the clamp body 33. [ To this end, the coupling ring 42 may be coupled to the upper frame 20 at one end and to the fixed block 40 at the other end. When the fixing block 40 is inserted into the through hole 34 of the clamp body 33 and then the coupling ring 42 is coupled to the fixing block 40, the fixing block 40 is integrally formed with the clamping body 33 It can rotate.

The fixed cover 44 is detachably coupled to the fixed block 40 so as to cover the key plates 12a and 14 when the key plates 14 and 12a are inserted into the key groove 40a.

In this embodiment, first, the casing 10 is inserted and then the casing is gripped by the casing grasping portion 35, and then the clamp body 33 is rotated by the reduction gear portion 31, the casing 10 is rotated and inserted into the ground .

When the rotating operation of the casing 10 is finished, the wedge clamp 36 is lowered using the clamp restraint member 38 to separate the wedge clamp 36 from the casing 10. [ Then, the fixing block 40 is inserted into the upper portion of the through hole 34 of the clamp body 33, and the fixing block 40 is fixed to the clamp body 33 with the coupling ring 42. The key plate 14 is inserted into the key groove 40a of the fixing block 40 by inserting the drill rod pipe 12 and fixing the key plate 14 to the end of the drill rod pipe 12. [ The key plate 14 is covered with the fixing cover 44 so that the key plate 14 is not separated from the key groove 40a. Then, when the clamp body 33 is rotated by the reduction gear unit 31, the drill rod pipe 12 is rotated. At this time, if the excavated depth is deepened, the drill rod pipe 12 can be excavated while still assembling.

Further, it is necessary to use the drill rod pipe 12 formed at the intermediate portion of the key plate 12a in accordance with the depth to be excavated. At this time, the key plate 12a is inserted into the key groove 40a and then excavated. When the drilling depth is deepened, the drill rod pipe 12 is rotated 90 degrees to insert the key plate 12a into the key passage hole 40b .

Therefore, by using this embodiment, it is possible to perform not only the rotation of the casing 10 but also the rotating operation of the drill rod pipe 12 with one equipment. Thus, the working efficiency can be increased.

10: casing 12: drill rod pipe
12a: key plate 14: key plate
16: base frame 18: guide post
20: upper frame 22: lower frame
24: Cradle 26: Swivel
30: Rotator assembling means 31: Reducer fisher unit
33: clamp body 34: through hole
35: casing holding portion 36: wedge clamp
38: clamp restraint member 39: pipe grip section
40: fixed block 40a: keyway
40b: key passage hole 42: engagement ring
44: Fixed cover

Claims (7)

A casing,
A plurality of drill rod pipes assembled in a row and inserted into the casing to be coupled to a lower portion of the swivel,
A key plate detachably coupled to one end of the drill rod pipe,
A clamp body which is formed with a through hole into which the casing can be inserted and which is coupled to the reduction gear unit so as to be rotatable by the reduction gear unit; And a rotator assembling means having a casing grasping portion inserted into one side of the hole and capable of grasping the casing, and a pipe grasping portion inserted into the other side of the through hole of the clamping body to grasp the key plate And a casing rotator having an inverse circulation rolling function. The method according to claim 1,
Wherein the clamp body is formed by slanting one side of the through hole,
Wherein the casing holding portion includes a wedge clamp which can be inserted into one side of the through hole and a clamp restraining member which inserts the wedge clamp into the through hole so that the wedge clamp can grip the casing Casing rotator with circular rolling function. 3. The apparatus of claim 2, wherein the pipe gripping portion
A fixing block which can be inserted into the other side of the through hole and has a key groove formed at one side thereof so as to be inserted into the key plate,
And a coupling ring for coupling the fixed block to the clamp body. The method of claim 3,
Wherein the drill rod pipe has the key plate formed at an intermediate portion thereof,
Wherein the fixed block is further formed with a key passage hole passing through the key groove so as to be inserted through the key plate formed in the drill rod pipe. 5. The method of claim 4,
Wherein the pipe grasping portion further comprises a fixed lid removably attachable to and detachable from the fixed block so as to cover the key plate inserted into the key groove. 6. The method according to any one of claims 1 to 5,
A base frame,
A guide post installed in the base frame,
An upper frame rotatably supporting the clamp body and fixed to one end of the guide post,
A lower frame fixed to the wedge clamp and slidably mounted along the guide post,
Further comprising a cradle fixed to an upper end of the guide post to mount the swivel. The method according to claim 6,
Wherein the clamp restraint member includes a clamping cylinder having one end fixed to the lower frame and the other end fixed to the upper frame so that the wedge clamp can be inserted into the clamp body. A casing rotator.

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