KR100919730B1 - A horizontal excavator - Google Patents

Abstract

The present invention relates to a horizontal excavator, comprising: a rotating frame mounted rotatably on a base frame provided to be capable of lifting and lowering by a lifting unit; A first slide block and a second slide block sequentially installed on the rotating frame to enable a linear reciprocating motion; A hollow excavation casing installed in a cantilever structure so as to be rotationally driven by a drive unit provided in the first slide block; A screw rod inserted into a hollow portion of the excavation casing so as to be driven to rotate in a direction opposite to the excavation casing by a drive source provided in the second slide block; A first drilling bit and a second drilling bit installed in a detachable state at the distal end of the drilling casing and the screw rod, respectively; And a holder frame provided at the tip of the rotating frame to support the excavation casing in a rotatable state. According to this configuration, the excavation casing and the screw rod therein can be rotated to face each other at the same time in the horizontal drilling of the ground to increase the excavation efficiency through the effect that can smoothly discharge the excavated soil.

Description

A horizontal excavator

The present invention relates to a horizontal excavator, and more particularly, to a horizontal excavator for horizontal well landing for installing a perforator (Strainer) in a radial catchment for underground rock water harvesting.

Recently, the demand for water is increasing due to environmental changes caused by industrial development and population growth. In this situation, many developed countries have put enormous efforts and budgets to secure sufficient water resources. As an example of efforts to secure such water resources, mainly in developed countries in Europe, drift water is rarely taken directly for the production of tap water. Due to the application of the process, efforts are being made to use as few chemicals as possible in the water purification process.

In general, the radial catchment has the advantage of pumping a large amount of water from the aquifer and even increases the flow rate from the river to the aquifer and the sump. In Korea, the introduction of radial catchment is increasing.

As illustrated in FIG. 1, the radial water collecting well has radial vertical wells 1 extending from the soil layer, the dead sand layer, and the weathering / sedimentation layer A to the soft rock layer B and the hard rock layer C. After construction, the horizontal well 2 is excavated in the aquifer layer D, which is located between the soft rock layer B and the hard rock layer C, through a horizontal excavator 10 installed at the bottom of the vertical well 1. In the horizontal well (1) by installing a filtering pipe (Strainer; S) is constructed to collect a large amount of rock groundwater.

On the other hand, an example of a horizontal excavator for horizontal well drilling of the radial catchment as described above is disclosed in detail in Korean Patent Publication No. 10-0545567 and Korean Utility Model Publication No. 20-0361243.

By the way, the conventional horizontal excavator has a problem in that the excavation efficiency is difficult to smoothly discharge the excavated soil as the horizontal well is excavated by rotating the auger screw inserted into the excavation casing.

Therefore, the present invention was created in view of the problems of the conventional horizontal excavator as described above to improve this, the object of the present invention is to simultaneously rotate the excavation casing and the screw rod therein at the time of horizontal drilling of the ground facing each other It is to provide a horizontal excavator that improves the drilling efficiency through the smooth discharge action of the soil excavated by movement.

In order to achieve the above object, a horizontal excavator according to the present invention includes a base frame provided to be capable of lifting and lowering by a lifting unit; A rotating frame mounted to the base frame so as to be rotatable; A first slide block and a second slide block sequentially installed on the rotating frame to enable a linear reciprocating motion; A hollow excavation casing installed in a cantilever structure so as to be rotationally driven by a drive unit provided in the first slide block; A screw rod installed to be inserted into a hollow portion of the excavation casing so as to be driven to rotate in a direction opposite to the excavation casing by a drive source provided in the second slide block; A first drilling bit and a second drilling bit installed in a detachable state at the distal end of the drilling casing and the screw rod; And a holder frame provided at the tip of the rotating frame to support the excavation casing in a rotatable state.

According to one aspect of the invention, the lifting unit is preferably provided with a plurality of jack cylinder to allow the mounting of the base frame.

A plurality of outrigger cylinders may be further provided at the edge of the rotating frame.

The drive unit includes a pair of hydraulic motors installed in the first slide block, and a hollow spindle shaft embedded in the first slide block to be rotated by the hydraulic motor to allow attachment and detachment of the excavation casing. It is preferable.

It is preferable that the first slide block and the second slide block are each installed in a linear reciprocating motion by an actuator cylinder installed in the rotating frame.

The hollow drilling casing and the screw rod are installed to achieve a stretchable state by detaching a plurality of units.

The first drilling bit is preferably configured to include a cylindrical body detachably installed at the distal end of the excavation casing, and a plurality of excavating bite tips continuously provided at the edge end of the cylindrical body.

The second drilling bit has a cylindrical body coupled to the distal end of the screw rod, and the plurality of plate-shaped wings having the inclined distal end are erect side by side in the longitudinal direction so as to be disposed at equal intervals along the outer circumferential surface of the cylindrical body. It is preferably installed in a state, and the front end portion of the cylindrical body and the plate-shaped wing is preferably provided with a plurality of unit bite tip.

According to the horizontal excavator according to the present invention having the configuration as described above, when the horizontal drilling of the ground, the excavation excavation casing and the excavation screw therein to rotate at the same time opposite to each other to smoothly discharge the excavated soil The effect can double the improvement of digging efficiency.

1 is a schematic view illustrating to illustrate a radial water collecting well and its construction process;

Figure 2 is a side view schematically showing a horizontal excavator according to the present invention,

3 is a plan view schematically showing a horizontal excavator according to the present invention,

Figure 4 is a schematic perspective view showing an excerpt of the excavation casing and screw rod of the horizontal excavator according to the present invention,

Figure 5 is a schematic perspective view showing an excerpt of the excavation bit provided in the excavation casing of the horizontal excavator according to the present invention,

Figure 6 is a schematic perspective view showing the excavation bit is provided in the screw rod of the horizontal excavator according to the present invention,

7 is a schematic perspective view showing an extract of a holder frame of a horizontal excavator according to the present invention,

8 is a schematic plan view illustrating an operating state for horizontal positioning of a horizontal excavator according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100 ... Horizontal Excavator 110 ... Base Frame

111 ... Elevation unit 120 ... Rotating frame

121 ... slide rail 122 ...

123, 124 Cylinder 130 ... Slide 1 130M Drive unit 140 Slide 2

150 ... excavation casing 151 ... 1st excavation bit

151a ... casing bit 151b ... byte tip

160 ... screw rod 161 ... second drilling bit

161a ... cylindrical body 161b ... plate wing

161c ... Byte Tip 161d ... Keyway

170 holder holder 171 first holder

172 second holder 171a, 172a chuck member

Hereinafter, with reference to the accompanying drawings will be described in detail a horizontal excavator according to a preferred embodiment of the present invention.

2 and 3, the horizontal excavator 100 according to the preferred embodiment of the present invention includes a base frame 110 provided to be capable of lifting and lowering by a plurality of lifting units 111, and the base frame 110. It comprises a rotating frame 120 is installed to enable a rotational movement.

The elevating unit 111 performs the function of adjusting the setting height by elevating the base frame 110. This configuration is to control the height setting for the exact puncturing position of the excavation tool during horizontal drilling, for example, a conventional publicly available lifting means such as jack cylinder can be applied.

The base frame 110 and the rotating frame 120 is preferably made of steel to form a rectangular structure in a standard that can be accommodated therein and seated on the floor according to the diameter scale of the radial catchment.

The rotation frame 120 is installed to allow a free rotation movement by the drive source 122 provided in the base frame 110. Such a configuration is to perform a function for controlling a plurality of horizontal excavation positioning according to the horizontal angle of the vertical alignment disposed radially at a certain height of the vertical wall, the drive source 122, for example, swing motor and swing A configuration including conventional rotational drive means such as a bearing can be applied.

The first slide block 130 and the second slide block 140 are sequentially disposed along the excavation direction in the rotating frame 120 and are installed in a state capable of linear reciprocating motion.

The first slide block 130 and the second slide block 140 are interlocked by driving the cylinders 123 and 124 (see FIGS. 2 and 3) and the cylinder 141 (see FIG. 2) installed in the rotating frame 120, respectively. The linear reciprocating motion is installed along the pair of common slide rails 121 provided on the rotating frame 120 so as to move forward and backward.

The hollow slide casing 150 having a pipe shape installed in the cantilever structure is installed in the first slide block 130 in a state capable of rotationally driving.

The hollow excavation casing 150 has a first drilling bit 151 at the tip portion as shown in FIGS. 4 and 5, and is driven by a drive unit 130M provided in the first slide block 130. It is driven to rotate to perform the function of the propulsion shaft for the excavation.

As shown in FIGS. 4 and 5, the first drilling bit 151 is provided by welding a plurality of bite tips 151b at the end of the cylindrical casing bit 151a to form a sharp thread shape. It's supposed to do the job. In addition, the first drilling bit 151a and the hollow drilling casing 150 may form a detachable state by, for example, forming a threaded portion that is complementarily coupled to the coupling portion thereof.

The drive unit 130M is connected to a pair of hydraulic motors M1 and M2 installed in the first slide block 130 and a gear group G for transmitting power output therefrom, and is built in a hollow type so as to drive rotation. It comprises a spindle axis (S).

The hollow excavation casing 130 is coupled in a detachable state to the spindle shaft (S), it is installed to have a variable length by detachable a plurality of units.

The hollow drilling casing 130 is a spindle shaft (S), for example, by forming a threaded portion that is complementarily coupled to each of the coupling portion, it can achieve a removable state.

The second slide block 140 is provided with a screw rod 160 which is inserted coaxially into the hollow portion of the spindle shaft (S) and the excavation casing (150).

As shown in FIGS. 4 and 6, the screw rod 160 is provided with a second drilling bit 161 at a distal end thereof, and the drilling casing is driven by a driving unit 140M installed at the second slide block 140. It is controlled to be driven to rotate in the direction opposite to the rotation direction of 150 to perform the excavation propulsion function, a plurality of units are installed to have a variable length by detachable by, for example, screwing.

As shown in FIG. 6, the second drilling bit 161 has a cylindrical body 161a coupled to the tip of the screw rod 160 and has a plurality of plate-shaped wings 161b having an inclined tip. ) Are installed side by side in the longitudinal direction so as to be arranged at equal intervals along the outer circumferential surface of the cylindrical body (161a), each of the plurality of ends of the cylindrical body (161a) and the plate-shaped wing (161b) The unit bite tip 161c is welded so that the front end surface is formed to form a sharp screw thread to perform excavation work.

In addition, a key groove 161d is provided at a rear end of the cylindrical body 161a of the second drilling bit 161 so as to be detachably coupled to the front end of the screw rod 160. The key groove 161d is locked / unlocked by a complementary action with a coupling protrusion (not shown) provided at the tip of the screw rod 160, which is not shown, so that the second drilling bit 161 is screw rod ( 160 to be detachable to the front end function.

The driving unit 140M of the second slide block 140 includes a hydraulic motor M3 installed in the second slide block 140, a reduction gear (not shown), and a gear group (not shown), and the screw rod 160. And the excavation casing 150 together to form a so-called excavation auger unit.

Meanwhile, out riger cylinders C1 to C4 are installed at outer corners of the rotating frame 120, respectively. The outrigger cylinders C1 to C4 are extended and supported to be in close contact with the wall of the vertical tablet during excavation construction to perform a kind of anchor function. By such a configuration, it is possible to prevent the flow of the rotating frame 120 to perform excavation work in a state in which the entire horizontal excavator is set in a stable state.

In addition, a holder frame 170 for supporting the excavation casing 150 installed in the cantilever structure in a rotatable state is installed at the distal end of the rotating frame 120.

As shown in FIG. 7, the holder frame 170 has a first holder 171 and a second holder 172 having grooves in the form of a horseshoe, and hollow drilling casings 150 in the grooves in the form of a horseshoe. It is supported in a rotatably seated state.

In addition, the first holder 171 is installed in a state fixed to the end of the rotary frame 120, the second holder 172 to be rotatable by the cylinder 172c installed on the rotary frame 171. It is disposed side by side in a state facing the first holder 171.

In addition, a pair of chuck members 171a and 172a are driven in the horseshoe-shaped grooves of the first holder 171 and the second holder 172 to be adjacent to and spaced apart from each other by a built-in cylinder (not shown). Is installed. The chuck members 171a and 172a are configured to chuck the excavation casing at the front end and the excavation casing at the rear end with the connection portions of the unit hollow excavation casing 150 interposed therebetween, respectively, in the state in which the operation of the excavator is stopped.

Therefore, as the initial operation when the hollow drilling casing 150 is attached and detached, the second holder 172 is a cylinder in the state that the chuck members 171a and 172a chuck the drilling casing at the front end and the drilling casing at the rear end, respectively. By being controlled to rotate at a predetermined angle by the driving of 172c, the excavation casing at the rear end can be released or engaged with the excavation casing at the front end while being rotated.

That is, the holder frame 170 supports the excavation casing 150 in a rotatable state, and at the same time, performs a function of providing an initial rotational torque for attaching and detaching the unit excavation casing.

Hereinafter, the operation state of the horizontal excavator according to the present invention having the configuration as described above will be described in detail with reference to the drawings.

First, in order to construct a horizontal well using the horizontal excavator 100 according to the present invention, a crane or the like inside the radial vertical well 1 in which excavation construction is completed in a vertical state as illustrated in FIGS. 1 and 8. By using the horizontal excavator 100 is lowered and installed to be placed in a stable state on the floor. As described above, the horizontal excavator 100 seated on the bottom of the vertical well 1 has an initial setting for setting position coordinates (height and horizontal position or placement angle) for horizontal well excavation according to the operation control of a controller (not shown). It starts running in a state.

First, through an operation control of a controller (not shown) provided outside of the vertical well 1 for initial setting to fit the height of the horizontal well 2A, 2B to be excavated to the wall of the vertical well 1. Operation control of the elevating unit 111 is controlled to adjust the height of the base frame 110. According to the height adjustment operation of the base frame 110, the first excavation coupled to the distal end of the excavation casing 150 and the screw rod 160 of the hollow portion at the design height for excavating the vertical tablets 2A and 2B, respectively. The positioning of the drilling height of the bit 151 and the second drilling bit 161 is made.

Subsequently, drive control of the drive source 122 (swing motor and swing bearing) provided in the base frame 110 is performed to rotate the rotating frame 120 as illustrated in FIG. 8 to thereby rotate the first drilling bit 151 and the second. The drilling bit 161 adjusts the rotational movement angle to correspond to the excavation position coordinates of the horizontal wells 2A and 2B radially disposed at a predetermined height of the vertical well 1 to complete the final excavation positioning operation.

As described above, when the excavation positioning operation is completed, the drive control so that the out riger cylinder (C1 ~ C4) provided in each of the outer edge of the rotary frame 120 is extended to the wall of the vertical well (1) It is maintained to be in close contact with the. Outriger cylinder (C1 ~ C4) performs the anchor function in accordance with the result of the operation, thereby preventing the flow of the rotating frame 120 in a state in which the entire horizontal excavator 100 is set in a stable state Excavation can be performed.

Next, in order to perform a full-scale horizontal drilling operation, the first slide block 130 and the second slide block 140 are rotated by the driving of the cylinders 123, 124, and the cylinder 141 installed in the rotation frame 120, respectively. Along with the slide rail 121 of 120 is controlled to move in a linear movement in the excavation direction.

Subsequently, the driving unit 130M provided in the first slide block 130 and the driving unit installed in the second slide block 140 with the linear movement and the parallax between the first slide block 130 and the second slide block 140 ( According to the driving control of 140M, the hollow drilling casing 150, the first drilling bit 151, the screw rod 160, and the second drilling bit 161 are controlled to rotate.

Therefore, the hollow drilling casing 150, the first drilling bit 151, the screw rod 160 and the second at the same time as the linear movement of the first slide block 130 and the second slide block 140 as described above Excavation thrust force is generated by the rotational movement of the excavation bit 161 to achieve a horizontal excavation construction.

According to the horizontal excavator 100 according to the present invention, an annular recess is formed by the first drilling bit 151 of the drilling casing 150 and the second drilling bit 161 of the screw rod 160 therein. By excavating construction of the double structure by forming the central excavation portion by this it is possible to significantly increase the excavation speed.

In addition, as the excavation casing 150 and the screw rod 160 rotate in opposite directions during the excavation construction of the horizontal well, the earth and sand excavated by the second excavation bit 161 are excavated with the wing of the screw rod 160. The entanglement between the inner walls of the casing 150 is prevented from being blocked at the source, thereby increasing the excavation efficiency through easier soil discharge.

As the excavation operation of the horizontal excavator 100 according to the present invention progresses, the excavation length of the horizontal tablet is increased, thereby driving and controlling the first holder 171 and the second holder 172 of the holder frame 170. The separate units of the casing 150 and the screw rod 160 are further coupled to each other so that the drilling operation can be performed with the shaft length extended.

Claims (8)

delete A base frame provided to be capable of lifting and lowering by the lifting unit; A rotating frame mounted to the base frame so as to be rotatable; A first slide block and a second slide block sequentially installed on the rotating frame to enable a linear reciprocating motion; A hollow excavation casing installed in a cantilever structure so as to be rotationally driven by a drive unit provided in the first slide block; A screw rod installed to be inserted into a hollow portion of the excavation casing so as to be driven to rotate in a direction opposite to the excavation casing by a drive unit provided in the second slide block; A first drilling bit and a second drilling bit installed in a detachable state at the distal end of the drilling casing and the screw rod; In a horizontal excavator including a holder frame provided at the front end of the rotating frame to support the excavation casing in a rotatable state, The elevating unit is a horizontal excavator, characterized in that a plurality of jack cylinder is installed to allow the mounting of the base frame. The method of claim 2, Horizontal excavator is characterized in that the edge of the rotating frame is provided with a plurality of outrigger cylinder. The method of claim 2, wherein the drive unit, A pair of hydraulic motors installed in the first slide block, a hollow spindle shaft embedded in the first slide block to be rotated by the hydraulic motor to allow attachment and detachment of the excavation casing, and connecting the hydraulic motor and the spindle shaft A horizontal excavator, comprising a gear train installed to The method of claim 2, And the first slide block and the second slide block are each installed in a linear reciprocating manner by an actuator cylinder installed in the rotating frame. The method of claim 2, The hollow excavation casing and the screw rod is a horizontal excavator, characterized in that installed so as to have a variable length by detaching a plurality of units. The method of claim 2, The first drilling bit is a horizontal excavator, characterized in that it comprises a cylindrical body detachably installed at the distal end of the excavation casing, and a plurality of bite tip continuously provided at the edge end of the cylindrical body. The method of claim 2, The second drilling bit has a cylindrical body coupled to the distal end of the screw rod, and the plurality of plate-shaped wings having the inclined distal end are erect side by side in the longitudinal direction so as to be disposed at equal intervals along the outer circumferential surface of the cylindrical body. And a plurality of unit bite tips are provided at the distal end portions of the cylindrical body and the plate-shaped wing, respectively.