KR20150104785A - Clamp apparatus of oil pressure for extension screw lod - Google Patents

Abstract

The present invention relates to a hydraulic clamp apparatus for an extension screw rod installed on an upper part of a lower auger for a ground excavator which lifts along a guide bar of a leader of a crawler crane, comprising: an hydraulic clamp body installed to be able to slide at the guide bar, having two guide holes penetrated in a straight line formed on each of hydraulic clamp body frames which lift along the guide bar and face each other, and having a square shape of which the upper and lower parts are open, wherein two pressurizing throttling plates are configured to face each other towards the center of the hydraulic clamp body, a facing surface is formed as a curve, and protraction portions of both sides of the pressurizing throttling plate are inserted into and protrude from each of the guide grooves; the two pressurizing throttling plates configured to face each other towards the center of the hydraulic clamp body, wherein the facing surface is formed in a curve, and the pressurizing throttling plates are formed in a plate type including the protraction portions of both sides of the pressurizing throttling plate, inserted into and protruding from each of guide grooves, and is moved in the guide groove; and a rod hydraulic device including a throttling plate hydraulic cylinder rod and two throttling plate hydraulic cylinders hinge-coupled to the pressurizing throttling plates and operated with oil pressure of the crawler crane. Therefore, the hydraulic clamp apparatus for the extension screw rod is able to slide while facing the two pressurizing throttling plates and is commonly used regardless of the size of the diameter of the extension screw rod, and does not generate eccentric virtual pressure at the same time. The pressurizing throttling plate slides into the guide groove, and therefore, the direction of the virtual pressure is the same all the time. The entire length of the gear part and lower auger hydraulic device having a sickle-shaped rack are reduced.

Description

CLAMP APPARATUS OF OIL PRESSURE FOR EXTENSION SCREW LOD

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion rod hydraulic clamp device for use in a ground excavator, and more particularly, to a hydraulic clamp device for a stretch rod which is constituted by a pressurized throttle plate and a rod hydraulic device and operated by hydraulic pressure of a crawler crane, And which can be used universally regardless of the size of a diameter of a telescopic rod having a constricted or contracted structure and is free from eccentric pressing force.

In general, modern buildings are becoming increasingly stratified and larger in size, and such high-rise buildings are subjected to a great deal of vertical load or wind force due to their own weight, and such buildings are supported by piles supported by the ground layer The structure of the pile is constructed by impact type in which the pile is directly pushed into the ground by hitting with a propeller or the like and a punch type in which the pile is pierced by rotating the auger and then the pile is pierced in the pier.

Although the excavation depth varies depending on the site of excavation work, the maximum length of the longest leader among the readers guiding the auger to move upward and downward is not more than 40 m.

However, in recent years, depth of excavation such as infiltration tunnel construction and underground subway excavation work has been deepening to 40m or more underground. However, the excavation equipment currently used is limited to about 40m in reader equipment. To solve this problem, And a stretching rod which is contracted and assembled in multiple stages is used.

[0004] In order to clamp such a stretching rod,

10-1300041 An excavator for soft ground improvement (Aug. 29, 2013) equipped with a stretching rod clamp device,

A columnar lead; An auger provided on one side of the lead so as to be slidable up and down, and configured to rotate in conjunction with a motor provided with at least one telescopic rod having a telescopic structure at its lower portion; An excavation stirring rod provided at the lower end of the extensible rod for excavating the ground or rotating the same as the extensible rod, stirring the cement mortar or discharging the cement mortar from the lower portion; The excavator for soft ground improvement, which is slidably installed on one side of a lid and supports a stretch rod and a excavating agitation rod, comprising: a rotary shaft vertically installed on an upper portion of the support ground; A pair of pressing bars formed on one side of the rotating shaft so as to form a rod insertion hole between the inner side surfaces while the inner side surfaces are recessed corresponding to the diameter of the stretching rod; The end of the piston rod protruding from the other end is rotatably connected to the other side of the other pressure bar by a fixing pin so that the piston rod is inserted into the inside or outside And a piston cylinder for restraining or restraining the stretching rod by operating the pushing bar through a movement of pulling out the clamping bar.

The clamp device of the related art as described above has a problem that one side of the pressing bar is fixed to the rotating shaft so that various pressing bars suitable for the diameter of the elongating and shrinking rod are usable and thus the clamping device is used only as a dedicated clamping device There is a problem.

Further, in the clamping device of the related art, one side of the pressing bar is fixed to the rotating shaft, and there is a problem that the pressing force on the side of the pressing bar and the side of the piston rod (piston cylinder) is different.

In addition, the clamp device of the related art has a problem that one side of the pressure bar is fixed to the rotary shaft, so that the pressing force does not act correspondingly on the central axis but is eccentrically pressed.

In addition, the clamp device of the related art has a problem in that one side of the pressure bar is fixed to the rotary shaft, so that the pressing force is concentrated on the rotary shaft and the rotary shaft is broken.

In addition, the conventional clamping device has only one clamping device per stretching rod, which limits the increase in pressing force.

In addition, the clamping device of the prior art is capable of eccentric positioning of the rotary shaft and the piston rod (piston cylinder), and the pressing force changes direction.

SUMMARY OF THE INVENTION The present invention has been devised in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a pressurization throttle valve, which constitutes two pressing throttle plates moving in a guide groove of a body, Which can be used universally regardless of the diameter of the elongating rod and which has less occurrence of failure without eccentric pressing force and good pressing force.

The present invention relates to a hydraulic clamp apparatus for a stretch rod, which is constituted on an upper portion of a lower auger for a ground excavator which moves up and down along a guide rod of a leader of a crawler crane, A hydraulic clamp body having a guide groove formed through a frame and moving up and down along the guide frame and vertically opened; A pressurization throttle plate having a plate-like shape configured to be moved within the hydraulic clamp body and having protrusions whose both side surfaces are inserted into and protruded from the guide grooves, and which are moved in the guide grooves; And a rod hydraulic device hinged to the pressurization throttle plate.

Further, in the present invention, the guide grooves of the hydraulic clamp body are formed in two straight lines in each of the opposed hydraulic clamp body frames; The pressing throttle plates are configured such that two of them are opposed to the center of the hydraulic clamp body. The opposite surfaces of the pressing throttle plate are curved, and protruding portions on both side surfaces of the pressing throttle plate are inserted and projected respectively into the guide grooves.

Further, the present invention is characterized in that the above-described rod hydraulic device includes two throttle plate hydraulic cylinders hinged to respective projections of one pressurization throttle plate on both sides of the outer surface of the hydraulic clamp body constituted by the guide grooves and acting as hydraulic pressure of the crawler crane, And two throttle plate cylinder rods inserted into each of the throttle plate hydraulic cylinders to be drawn out and inserted and hinged to the respective protruding portions of the other pressurization throttle plate.

According to the present invention, there is also provided a hydraulic clamp apparatus comprising: a hydraulic clamp body detachably mountable on a lower side of the hydraulic clamp body and slidably mounted on a guide rod to move up and down along a guide rod, A body; Two auger hydraulic cylinders each of which is housed on both side inner spaces of the lower auger body and hinged to one side of one side of one inner side of the lower auger body and operated by the hydraulic pressure of the crawler crane, A lower auger hydraulic device hinge-connected to the other one of the auger hydraulic cylinder rods and having a rack gear formed on one side thereof; A pinion gear configured to be engaged with a rack gear of the rack is formed on the outer circumferential surface, and is formed of a cylindrical body, and is configured by a pinion arranged at the center of the lower auger body.

Further, the present invention is characterized in that the rack is constituted by a gear portion constituted by a long straight line constituted by a rack gear on one side outer surface and a hinge portion extending perpendicularly from one side of the gear portion and hinged to the other side of the auger hydraulic cylinder rod, do.

The expansion and contraction rod hydraulic clamping apparatus of the present invention is advantageously used in general use irrespective of the diameter of the extensible rod while sliding the two pressurization throttle plates facing each other.

Further, the present invention has the effect that the eccentric pressing force is not generated because the pressing rod is pressed against the two pressurization throttle plates facing each other.

Further, in the present invention, each of the two pressure throttle plates is provided with a rod hydraulic device, so that a large pressing force can be applied and the pressing force is dispersed.

Further, the present invention has the same effect as the pressing throttle plate slides in the guide groove and the pressing force improves the direction.

Further, the present invention has an effect that the pressing force of the rod hydraulic device is dispersed in a plurality of hinge shafts so that the failure due to the hinge axis is small.

Further, the present invention is effective in that the rod hydraulic device and the lower auger hydraulic device are operated by the hydraulic pressure of the hydraulic device of the crawler crane so that the power reduction is small, the energy efficiency is good, the oil pressure is doubled, and the operation is good.

Further, the present invention is characterized in that the rack of the lower auger hydraulic device is constituted by a gear portion and a hinge portion in the shape of '┓ ┓', so that the auger hydraulic cylinder rod is positioned on the other side of the gear portion of the rack and the entire length of the lower auger hydraulic device is reduced It is effective.

In addition, the present invention has the effect that the lower auger is constituted by the lower auger hydraulic device, the rack and the pinion, so that its construction and operation are simple and the cost is saved.

1 is a perspective view of a ground excavator equipped with the present invention;
2 is a perspective view of a lower auger equipped with the present invention;
3 is a side elevation view of a lower auger equipped with the present invention;
4 is a cross-sectional view of a lower auger equipped with the present invention;
5 is a perspective view of a hydraulic clamp apparatus for an extension and contraction rod of the present invention.
Fig. 6 is a plan view of a hydraulic clamp apparatus of an extensible rod according to the present invention. Fig.
7 is a perspective view of a hydraulic lower auger according to the present invention.
8 is a plan view of the hydraulic lower auger of the present invention.
Fig. 9: Combination state of the extensible rod hydraulic clamp device of the present invention and the extensible rod

The configuration and operation of the present invention will be described in detail with reference to FIGS. 1 to 9 attached hereto.

Generally, in the foundation file, the double rod auger (DRA) method in the excavation of the foundation, the inner auger and the outer casing auger, ie the upper auger (1) and the lower auger (2) After finishing the operation, the lower auger (2) is finished after final drawing.

The upper auger 1 and the lower auger 2 are vertically coupled to one leader 3. The upper auger 1 is generally provided with a screw rod 4 and the lower auger 2 is provided with a casing rod 5, and the screw rod 4 enters the casing rod 5, the screw rod 4 punctures the casing rod 5, and the casing rod 5 protects the gravel from being broken.

The screw rod 4 of the upper auger 1 rotates counterclockwise in the clockwise direction to perforate the upper auger 1 and the lower auger 2 in order to balance the forces with each other, At this time, the slime clay is discharged to the upper side of the lower auger 2 by blowing compressed air.

When the screw rod 4 and the casing rod 5 reach the supporting layer, the upper auger 1 is rotated in the reverse direction of the screw rod 4 to pull out the upper auger 1 and inject the cement mortar, 1) is removed.

After the drive part of the lower auger 2 is separated from the casing rod 5 and the file is inserted into the casing rod 5, the driving part of the lower auger 2 is again coupled to the casing rod 5, When the casing rod 5 is pulled up by rotating the casing 2 in the clockwise direction, the installation of one file is completed.

Since the upper auger 1 and the lower auger 2 move freely up and down respectively, the piercing speed is fast and air is injected, so that slime clay is smooth and 100% perfect perforation can be achieved to the desired depth.

In a general ground drilling machine, a slipping lod is formed which is slid up and down in the lower auger 2 so as to extend or contract in length, thereby digging the excavation depth deeper by extension of the extensible rod 40 .

The telescopic rod 40 is vertically moved through the upper and lower portions of the lower auger 2. The telescopic rod 40 is rotated by the lower auger 2 to form a long cylindrical caliber 41 having guide grooves, And an inner rod inserted into the carrier 41 and coupled to the screw rod 4 at the lower end thereof.

That is, when the inner rod is slid in the lower direction and extends in the lower auger 2, the extensible rod 40 is constructed such that a screw rod 4 having a cylindrical shape is formed at the lower end of the outer peripheral surface of the screw rod 4, The rod 4 is projected longer from the lower auger 2 so that the screw rod 4 excavates the ground excavation depth deeper by the length the inner rod extends further in the lower auger 2. [

The hydraulic clamp device 10 according to the present invention is constructed on the upper part of the lower auger 2 to extend the length of the extensible rod 40 in order to excavate the excavation hole to a predetermined depth or to extend the extensible rod 40 to the outside of the excavation hole The extensible rod 40 is pressed against the outer peripheral surface of the extensible rod 40 to prevent the extensible rod 40 from falling into the excavation hole.

The present invention relates to a stretch rod hydraulic clamp device 10 constituted on an upper part of a lower auger 2 for a ground excavator which moves up and down along a guide rod 7 of a leader 3 of a crawler crane, (6) configured to be slidable on a guide bar (7) of a leader (3) of Fig. 1 (a) and moving up and down along a guide bar (7).

The bracket 6 is formed in a plate shape and has a semicircular inner surface in a vertical direction so that one inner surface thereof is in contact with the outer circumferential surface of the guide rod 7 and the other surface is coupled to the hydraulic clamp body 11 by bolts or the like, 11, but it is preferable that the clamping unit is configured to be detachable to the hydraulic clamp body 11 with a bolt or the like for replacement or repair of the extensible rod hydraulic clamping apparatus 10.

The bracket 6 has a pair of two facing each other with two guide rods 7 interposed therebetween. A semicircular inner surface of one bracket 6 surrounds the outer circumferential surface of one of the guide rods 7 And the inner surface of the other half of the bracket 6 encloses the outer circumferential surface of the other guide bar 7 so that the bracket 6 does not separate from the guide bar 7. [

The expansion and contraction rod hydraulic clamping apparatus 10 includes a hydraulic clamp body 11, a pressurization throttle plate 13, a rod hydraulic apparatus 12-1 composed of a throttle plate hydraulic cylinder 12-1 and a throttle plate cylinder rod 12-2 12).

The hydraulic clamp body 11 is configured to be slidable on the guide rod 7 and has a guide groove 11-1 formed on the guide rod 7 so as to pass through the frame, And a semi-rotary hydraulic lower auger 20 is detachably installed at a lower portion thereof.

The hydraulic clamp body 11 is composed of a hexahedron having a hexahedron as a whole and having an entire upper and lower openings so that the upper and lower surfaces communicate with each other, do.

A bracket 6 is integrally formed on one side of the hydraulic clamp body 11, that is, on an outer surface of one side of the hydraulic clamp body 11, or is formed as a detachable type by bolts or the like.

The guide grooves 11-1 of the hydraulic clamp body 11 are formed in two straight lines in each of the opposed hydraulic clamp body 11 frames.

The guide groove 11-1 is formed in a frame which is formed as a right and left frame of the hydraulic clamp body 11, that is, a frame that is not constituted by the bracket 6 but extends integrally at right angles to one side frame constituting the bracket 6.

The guide grooves 11-1 are formed in a frame having a long rectangular shape and extending integrally at right angles to one side frame constituting the bracket 6, and are formed in a long rectangular shape parallel to the longitudinal direction of the frame.

The guide grooves 11-1 are formed in a straight line so as to be spaced apart from each other at the center in the longitudinal direction of the frame, that is, the guide grooves 11-1 are formed to pass through the center of the frame in the longitudinal direction.

That is, since the guide grooves 11-1 are formed in each of the right and left side frames, four guide grooves 11-1 are formed in the entire hydraulic clamp body 11, and the guide grooves of the left frame and the right frame are spaced apart from each other, .

The guide grooves 11-1 are formed such that the sum of the rectangular lengths of the guide grooves 11-1 formed in the left frame or the right frame is greater than the sum of the rectangular lengths of the guide grooves 11-1 formed in the left frame or right frame, -2, and the pressurization throttle plates 13 are moved to face each other so that the small elongating rod 40 also has a sufficient value to clamp the outer circumferential surface.

The pressurization throttle plate 13 is of a plate type having a protruding portion 13-1 which is moved in the hydraulic clamp body 11 and both side frames are inserted into and protruded from the guide groove 11-1, 1).

The pressing throttle plate 13 is constructed such that two of the pressing throttle plates 13 are opposed to the center of the hydraulic clamp body 11 and the opposite surfaces are curved. The protruding portions 13-1 are inserted and projected respectively.

The thickness of the pressurization throttle plate 13 formed inside the frame of the hydraulic clamp body 11, that is, the inside of the frame of the 'ㅁ' shape, and the thickness of the pressurized throttle plate 13 penetrate through the guide groove 11-1, And the protrusion 13-1 outside the hydraulic clamp body 11, that is, outside the frame of the 'ㅁ' shape.

The thickness of the projecting portion 13-1 is made smaller than the short side of the guide groove 11-1 so that the projecting portion 13-1 can easily slide or reciprocate in the guide groove 11-1, The thickness of the pressing throttle plate 13 inside the body 11 is made larger than the thickness of the protrusion 13-1 so that the press throttle plate 13 inside the hydraulic clamp body 11 is inserted into the guide groove 11-1 .

The pressing throttle plate 13 is moved into the frame of the ㅁ -shaped shape by the thickness of the pressing throttle plate 13 in the hydraulic clamp body 11 being larger than the short side of the guide groove 11-1, 11-1).

It is possible to use it universally without regard to the diameter of the extensible rod 40 without generating an eccentric pressing force since the two pressurization throttle plates 13 face the extensible rod 40 while facing each other.

The rod hydraulic device 12 is hinged to the pressurization throttle plate 13 and operates by the hydraulic action of the crawler crane a so that the pressurization throttle plate 13 reciprocates in the guide groove 11-1.

The rod hydraulic device 12 is constituted by two on each of the outer surfaces of the left frame or the right frame of the hydraulic clamp body 11 and has two protrusions 13-1 ).

The throttle plate hydraulic cylinder 12-1 of the rod hydraulic device 12 is provided with projections 13-7 of one pressurization throttle plate 13 on both sides of the outer surface of the hydraulic clamp body 11 in which the guide grooves 11-1 are formed, 1 are hinged to each other and act as hydraulic pressure of the crawler crane (a).

The throttle plate cylinder rod 12-2 of the rod hydraulic device 12 is inserted into each of the throttle plate hydraulic cylinders 12-1 to be drawn out and inserted and the projections 13- 1) are hinged to each other.

Since the rod hydraulic device 12 is formed on each of the outer frame of the left frame or the right frame of the hydraulic clamp body 11, the throttle plate hydraulic cylinder 12-1 and the throttle plate cylinder rod 12-2 are also connected to the hydraulic clamp One on each of the left frame of the body 11 and the outer frame of the right frame.

The protrusions 13-1 of the pressurization throttle plate 13 led out to the outer surfaces of the left and right frames of the left and right frames of the hydraulic clamp body 11, A ball is formed.

A bracket having a hinge hole formed on the outer surface of the bottom portion of the throttle plate hydraulic cylinder 12-1 or near the end where the throttle plate cylinder rod 12-2 is not constituted, Hydraulic cylinder (12-1) Hinge joint of the ball screw shaft hinge.

A bracket having a hinge shaft is formed integrally with one outer surface of the throttle plate hydraulic cylinder 12-1 to constitute a separate bracket having a shape of '?' The cylinder 12-1 is inserted to form a hinge hole on the protruding surface of the '?' Bracket and hinged.

A hinge hole is formed in the vicinity of the end of the throttle plate cylinder rod 12-2 so as to pass through the hinge holes of the throttle plate cylinder rod 12-2 and the projections 13-1 of the pressure throttle plate 13 The formed hinge hole is hinged to the hinge shaft.

The hinge holes formed in the hinge holes of the throttle plate cylinder rod 12-2 and the projections 13-1 of the pressure throttle plate 13 are directly hinged to the hinge shaft or the protrusion 13- 1) and the bridge plate cylinder rod 12-2 are separately formed, and the hinge ball hinged to the hinge hole and the bridge plate cylinder rod 12-2 hinged to the projection 13-1 on the bracket, And can be hinged to the hinge shaft.

The protrusion 13-1 is hinged to the throttle plate hydraulic cylinder 12-1 and the throttle plate cylinder rod 12-2 so that the throttle plate cylinder rod 12-2 is hinged to the throttle plate hydraulic cylinder 12- 1, the two pressurization throttling plates 13 perform a linear reciprocating motion in the opposite direction to each other.

The hydraulic hoses connected to the hydraulic device of the crawler crane (a) are connected to the front and rear of the throttle plate hydraulic cylinder 12-1, respectively, so that the hydraulic oil of the crawler crane (a) And the throttle plate hydraulic cylinder 12-1 is moved back and forth in the throttle plate hydraulic cylinder 12-1 and the throttle plate cylinder rod 12-2 coupled to the throttle plate hydraulic cylinder 12-1 is inserted into the throttle plate 12-1, And is expanded and contracted by the back and forth movement of the hydraulic cylinder 12-1.

The protruding portion 13-1 is hingedly coupled to the throttle plate hydraulic cylinder 12-1 and the throttle plate cylinder rod 12-2 so that they are not both fixed to the specific device, Due to the back and forth movement of the throttle plate hydraulic cylinder 12-1, the protruding portions 13-1 are reciprocated in the direction opposite to each other in the guide grooves 11-1 so that the two pressure throttle plates 13 are opposed to each other Direction.

That is, when the throttle plate cylinder rod 12-2 protrudes or extends from the throttle plate hydraulic cylinder 12-1, the throttle plate hydraulic cylinder 12-1 and the throttle plate hydraulic cylinder 12-1 The two projections 13-1 hinged to the throttle plate hydraulic cylinder 12-1 and the throttle plate hydraulic cylinder 12-1 are separated from each other as the hinge holes are moved away from each other at the same distance, The pressing throttle plates 13 are disengaged.

When the throttle plate cylinder rod 12-2 is reduced in the throttle plate hydraulic cylinder 12-1, the two projections 13-1 and the two throttle plates 13 approach each other, Centered approach.

The throttle plate cylinder rod 12-2 and the throttle plate hydraulic cylinder 12-1 and the pressure throttle plate 13 are interlocked with each other, that is, interlocked and reciprocated so that the throttle plate cylinder rod 12-2 and the throttle plate hydraulic cylinder The sum of the moving distance of the pressing throttle plate 13 and the moving distance of the pressing throttle plate 13 becomes equal.

The drive motor is operated while the lower auger 2 is moved downward while the screw rod 4 is in close contact with the paper surface to rotate the screw rod 4 connected to the extensible rod 40 to excavate the paper surface, 40 and the length of the screw rod 4, the length of the extensible rod 40 is extended to increase the depth of the drill hole.

A hydraulic clamp device 10 is used to extend the length of the expansion and contraction rod 40 and the hydraulic oil of the crawler crane a is supplied to the throttle plate hydraulic cylinder 12-1 And the throttle plate cylinder rod 12-2 is inserted into the throttle plate hydraulic cylinder 12-1 so that a pair of the pressure throttle plates 13 are advanced while facing each other, The side face is pressed against the outer circumferential surface of the extensible rod 40 inserted in the excavation hole, so that the pressurization throttle plate 13 clamps the carribean 41.

When the carribean 41 is clamped through the hydraulic clamp device 10, the inner rod fixed by the guide groove, the upper key groove and the lower key groove formed in the carribean 41 is freed to pull out the inner rod, Extend the length.

Accordingly, the conventional technique in which the operator manually extends the length of the stretching rod 40 by installing the restraining means is performed safely and quickly with the hydraulic clamping device 10 by the hydraulic pressure of the crawler crane (a) Since the two shafts face each other and press the extensible rod, the eccentric pressing force is not generated but a large pressing force can be applied by the hydraulic device and the pressing force is dispersed.

When the excavation of the excavation hole is completed, the cement mortar is injected into the bottom of the excavation hole through the screw rod 4, and the excavation hole is filled with the cement mortar. At the same time, the screw rod 4 and the extensible rod 40, Is pulled up by the lower auger 2 in correspondence with the rising height while filling the cement mortar.

At this time, since the entire length of the stretching rod 40 is pulled out from the carries 41, the entire length of the stretching rod 40 having a longer length is longer than the height of the lid 3, Since the screw rod 4 can not be drawn out to the outside, the inner rod of the extensible rod 40 is inserted into the carries 41 to return the length of the extensible rod 40 to its original state.

At this time, when the clamping of the carrier 41 is performed using the hydraulic clamp device 10, when the clamping is completed, the guide groove, the upper key groove and the lower key groove of the carrier 41 and the inner rod are freely opened, Slidably inserted into the burr 41 to quickly return the extensible rod 40 to its original length.

The throttle plate cylinder rod 12-2 is advanced or pulled out of the throttle plate hydraulic cylinder 12-1 by the operation of the hydraulic device of the crawler crane a, So that the lower auger 2 is slid upward and the screw rod 4 is completely pulled out from the excavation hole to complete the construction.

A lower auger 2 is provided on the lower portion of the hydraulic clamp body 11 in order to simplify the structure and operation without requiring the construction of a motor, a speed reducing device, a gear box, a generator, A lower auger hydraulic device 22 composed of a cylinder 22-1 and an auger hydraulic cylinder rod 22-2, a rack 14 and a pinion 15, And is operated by the hydraulic pressure of the apparatus to constitute a semi-rotary hydraulic lower auger 20 having a good energy efficiency.

The semi-rotary hydraulic lower auger 20 includes a rack 24 provided on one side of the auger hydraulic cylinder 22-1 as a lower auger that ascends and descends along the guide bar 7 of the leader 3 of the crawler crane (a) And constitutes a pinion 25 to be engaged with the rack gear 24-1 so as to operate the auger hydraulic cylinder rod 22-2 with the hydraulic pressure of the hydraulic device of the crawler crane a to rotate the rack 24 in a linear reciprocating motion So that the casing rod 5 is inserted into the ground perforation in a reciprocating rotational motion of a predetermined interval, that is, a half turn.

The bracket 6 is formed in a plate shape and has a semicircular inner surface in a vertical direction so that one inner surface thereof is in contact with the outer circumferential surface of the guide rod 7 and the other surface is coupled to the lower auger body 21 by bolts, 21 may be integrally formed with the lower auger body 21, but it is preferable that the lower auger body 21 is detachably connected to the lower auger body 21 by bolts or the like for replacement or repair of the semi-rotary hydraulic lower auger 20.

The bracket 6 has a pair of two facing each other with two guide rods 7 interposed therebetween. A semicircular inner surface of one bracket 6 surrounds the outer circumferential surface of one of the guide rods 7 And the inner surface of the other half of the bracket 6 encloses the outer circumferential surface of the other guide bar 7 so that the bracket 6 does not separate from the guide bar 7. [

A lower auger body 21 constituted by an intermediate hydraulic portion 21-1, an upper hopper portion 21-2 and a lower connecting portion is detachably attached to the bracket 6, and a lower auger body 21 And a casing clamp 30 is detachably attached to a lower portion of the connecting portion. The casing clamp 30 is detachably connected to the lower portion of the connecting portion.

The hydraulic section 21-1 of the lower auger body 21 is formed by an inner space of the hexahedron at its middle side and a vertical center through which the hopper section 21-2 is connected to the upper portion of the hydraulic section 21-1 A hopper in which the inside is vertically penetrated and one side is communicated with the inside is constituted, and the connecting portion is formed in a cylindrical shape and constitutes an outlet communicating with the hopper of the hopper portion 21-2 and communicating with the outside.

The hydraulic section 21-1 of the lower auger body 21 is provided with a rack 24, an auger hydraulic cylinder 22-1 and an auger hydraulic cylinder rod 22-2 on both sides of the inner space, And discharges the clay attached to the outer circumferential surface of the casing rod 5 at the time of pulling out the slime clay or the casing rod 5 generated when the ground excavation is performed through the hopper and the discharge port.

That is, the hydraulic portion 21-1 of the lower auger body 21 is formed in a hexahedron as a whole, and a circular through hole having the same size is formed on the upper and lower surfaces so that the upper and lower surfaces communicate with each other at the center of the hexahedron.

In other words, the hydraulic portion 21-1 of the lower auger body 21 is constituted by the inner space of the hexahedron on the both sides and the upper and the lower portion through which the middle portion is circularly formed, so that the racks 24 And the auger hydraulic cylinder 22-2 and the auger hydraulic cylinder rod 22-2 are arranged in the center. The center of the circle passing through the center is a vertically penetrating cylindrical pinion 25 which will be described later, and a pinion 25 The screw rod 4 is inserted through the screw rod 4.

As described above, the lower auger body 21 is configured to be detachably coupled to the bracket 6 by bolts or the like in consideration of the convenience of exchange or repair.

The auger hydraulic cylinder 22-1 and the auger cylinder rod 22-2 are disposed on both sides of the center of the hydraulic passage 21-1 at the peripheries of the lower auger body 21-1 21, a pinion 25 is disposed at the center, a rack 24 is formed at the center in an inner side direction, a rack 24 is followed by a lower auger hydraulic device 22, The hydraulic cylinder 22-2 and the auger hydraulic cylinder 22-1 are formed in a straight shape.

The hopper portion 21-2 is formed in the lower direction of the lower auger body 21 in the downward direction, that is, in the direction of the paper surface, and the upper portion of the hopper has a cylindrical shape of a pinion 25 having a through- And the lower portion is formed on the other side of the hydraulic portion 21-1, that is, on the side where the lower auger hydraulic device 22 is not laid.

The discharge port 21-3 is configured to communicate with the hopper of the hopper portion 21-2 in the hydraulic pressure portion 21-1 while being drawn out from the lower auger main body 21 so as to be arranged in the downward direction .

The lower auger body 21 is formed with a pinion 25 having a cylindrical body and an outer shape of a hopper portion 21-2, a hydraulic portion 21-1, The hopper portion 21-2 has a quadrilateral intermediate shape, that is, the hydraulic portion 21-1 has a rectangular connection portion 21-2 projecting from the hoist portion 21-2, Is configured in a cylindrical shape.

The lower auger hydraulic device 22 is hinged to one side of the inner surface of the hydraulic pressure unit 21-1 and the lower auger hydraulic unit 22 is connected to the hydraulic device of the crawler crane a by a hydraulic hose Is operated by the hydraulic operation of the hydraulic device of the crawler crane (a).

The auger hydraulic cylinder 22-1 is constituted by an auger hydraulic cylinder 22-1 and an auger hydraulic cylinder rod 22-2. The auger hydraulic cylinder 22-1 is disposed on both sides of one inner surface of the lower auger body 21 And the auger cylinder rod 22-2 is inserted into each of the auger hydraulic cylinders 22-1 and 22-2. The auger cylinder rod 22-2 is hinged on one side of the auger hydraulic cylinder 22-1 and connected to the hydraulic device of the crawler crane a by a hydraulic hose And is configured to be pulled out or inserted from the auger hydraulic cylinder 22-1.

The hydraulic hoses connected to the hydraulic apparatus of the crawler crane (a) are connected to the front and rear of the auger hydraulic cylinder 22-1, respectively, so that the hydraulic oil of the crawler crane (a) The auger hydraulic cylinder rod 22-2 which is moved forward and backward of the auger hydraulic cylinder 22-1 and which is coupled to the auger hydraulic cylinder 22-1 enters and leaves the auger hydraulic cylinder 22-1, 1).

A rack 24 is hinged to the other side of the lower auger hydraulic device 22 and configured with a rack gear 24-1 on one side thereof and the rack 24 is composed of two auger cylinder rods 22-2, And is hinged to the other side of each of the two racks 24 so as to be opposed to each other with the pinion 25 as a center.

The rack gear 24-1 is formed on one entire side of the rack 24 so that when the auger cylinder rod 22-2 is completely drawn out of the auger hydraulic cylinder 22-1, When the auger cylinder rod 22-2 is completely inserted into the auger hydraulic cylinder 22-1, the other end of the rack 24 is connected to the pinion 25, The rack gear 24-1 is structured such that it is not separated from the pinion gear 25-1 of the pinion 25 by the operation of the rack 24. [

When the auger cylinder rod 22-2 is drawn out of the auger hydraulic cylinder 22-1 or inserted into the auger hydraulic cylinder 22-1 by the operation of the hydraulic device of the crawler crane (a), the two racks are reciprocated linearly .

The rack 24 is constituted by a straight and flat rod and a gear or rack gear 24-1 is formed on one side of the rod so that the auger cylinder rod 22-2 of the lower auger hydraulic device 22 performs a linear reciprocating motion The lower rack 24 also reciprocates linearly by the auger cylinder rod 22-2.

The auger hydraulic cylinder 22-1 and the auger cylinder rod 22-2 and the rack 24 are constituted so that the auger hydraulic cylinder 22-1 and the auger cylinder rod 22-2 are arranged in the same direction, In the case where the hydraulic cylinder 22-1 is configured identically on the inner surface of one side of the lower auger body 21, the auger cylinder rod 22-2 on one side and the auger cylinder 22-2 on the other side of the two auger cylinder rods 22-2, The action of the rod 22-2 is reversed.

That is, when one auger cylinder rod 22-2 is drawn out of the auger hydraulic cylinder 22-1, the other auger cylinder rod 22-2 is connected to the auger hydraulic cylinder 22-1, When one auger cylinder rod 22-2 is inserted into the auger hydraulic cylinder 22-1, the other auger cylinder rod 22-2 is inserted into the auger hydraulic cylinder 22-1 22-1 so that the two racks 24 reciprocate linearly in opposite directions to each other, whereby the pinion 25 reciprocates.

The two auger hydraulic cylinders 22-1 and 22-2 and the rack 24 are moved in the opposite direction to each other so that any of the auger hydraulic cylinders 22-1 is moved in the opposite direction to the auger hydraulic cylinder 22-1, And the other auger hydraulic cylinder 22-1 is configured on the inner side of the other side of the lower auger main body 21 so that the lower auger hydraulic device and the rack 24 are configured to face each other, The actions of the auger cylinder rods 22-2 are the same.

That is, when one auger cylinder rod 22-2 is pulled out of the auger hydraulic cylinder 22-1, the other auger cylinder rod 22-2 is also connected to the auger hydraulic cylinder 22-1, When one auger cylinder rod 22-2 is inserted into the auger hydraulic cylinder 22-1, the other auger cylinder rod 22-2 is also connected to the auger hydraulic cylinder 22-2 22-1 so that the two racks 24 reciprocate linearly in opposite directions to each other, whereby the pinion 25 reciprocates.

The auger hydraulic cylinder 22-1, the auger cylinder rod 22-2, and the rack 24 may be the same or opposite to each other.

Since the lower auger hydraulic device 22 is formed on both sides of the inner surface of one side of the lower auger body 21 so that the rack 24 is also mounted on the auger cylinder 22-2 of the lower auger hydraulic device 22 Each of which is hinge-connected.

That is, the auger hydraulic cylinder 22-1, the auger cylinder rod 22-2 and the rack 24 are constituted so as to be spaced apart from each other with the pinion 25, which will be described later, The rod 22-2 is configured to linearly reciprocate one rack 24 and the other auger cylinder rod 22-2 to linearly reciprocate the other rack 24. [

The pinion 25 is coupled to the rack gear 24-1 by a pinion gear 25-1 which is engaged with the rack gear 24-1 of the rack 24, And the rack gear 24-1 and the pinion gear 25-1 are mutually meshed with each other, so that the gear module, the tooth profile and the tooth width are the same.

When the pinion gear 25-1 is rotated, the pinion gear 25-1 is integrally formed on the entire outer peripheral surface of the body, that is, the entire middle portion of the body. .

The lower auger hydraulic device 22 is connected to the hydraulic device of the crawler crane a by a hydraulic hose, that is, the auger hydraulic cylinder 22-1 is connected to the hydraulic device of the crawler crane a and the hydraulic hose, the auger cylinder rod 22-2 is extended and retracted by a hydraulic action of the auger cylinder rod 22-2 and the rack 24 is reciprocated in a certain section by the expansion and contraction of the auger cylinder rod 22-2, The reciprocating motion of the rack 24 is transmitted to the pinion gear 25-1 which is engaged with the pinion gear 25-1 so that the pinion 25 reciprocates, that is, rotates halfway.

The rack 24 includes a gear portion 24-2 having a long straight line and having a rack gear 24-1 formed on one outer surface thereof and a gear portion 24-2 extending perpendicularly from one side of the gear portion 24-2, And the other side of the hydraulic cylinder rod 22-2 is hinged and formed of a short straight line.

That is, the rack 24 is formed in the shape of '━' ┓ ', and the long straight rod is composed of the gear portion 24-2 and the gear portion 24-2 extends perpendicularly from one side of the gear portion 24-2. The straight portion bar shorter than the hinge portion 24-2 is constituted by the hinge portion 24-3 and the gear portion 24-2 is formed on one outer surface, that is, on the outer surface opposite to the direction in which the hinge portion 24-3 is extended The rack gear 24-1 is formed and the other side of the auger hydraulic cylinder rod 22-2 is hinged to the hinge portion 24-3 so that the auger hydraulic cylinder rod 22-2 and the auger hydraulic cylinder 22-1 Is positioned in the direction in which the hinge portion 24-3 is formed.

The auger hydraulic cylinder rod 22-2 is positioned on the other side of the gear portion 24-2 of the rack 24 and the gear portion 24-2 and the auger hydraulic cylinder 22-1 are configured in parallel The overall length of the lower auger hydraulic device 22 is reduced.

When the auger hydraulic cylinder rod 22-2 is inserted into the auger hydraulic cylinder 22-1, the gear portion 24-2 of the rack 24 is positioned beside the auger hydraulic cylinder 22-1 , The auger hydraulic cylinder 22-1 drawn out when the auger hydraulic cylinder rod 22-2 is pulled out of the auger hydraulic cylinder 22-1 is moved to the side of the gear portion 24-2 of the rack 24 .

When the auger hydraulic cylinder rod 22-2 is inserted into the auger hydraulic cylinder 22-1, the auger hydraulic cylinder 22-1 and the gear portion 24-2 are parallel to each other, The auger hydraulic cylinder rod 22-2 and the gear portion 24-2 are parallel to each other and the length thereof is substantially equal to the length of the auger hydraulic cylinder 22-1, The length of the auger hydraulic cylinder rod 22-2 is the sum of the length of the auger hydraulic cylinder rod 22-2 and the length of the auger hydraulic cylinder rod 22-2.

However, when the auger hydraulic cylinder rod is hinged to one side of the rack by forming the rack in a straight configuration, when the auger hydraulic cylinder rod is inserted into the auger hydraulic cylinder, the auger hydraulic cylinder rod is exposed to the outside of the auger hydraulic cylinder The length of the auger hydraulic cylinder rod is a sum of the length of the rack, the length of the auger hydraulic cylinder and the length of the auger hydraulic cylinder rod exposed to the outside, so that the length of the auger hydraulic cylinder rod is extended by the length of the rack.

When the auger hydraulic cylinder 22-1 is pulled out of the auger hydraulic cylinder, the auger hydraulic cylinder rod and the auger hydraulic cylinder rod exposed to the outside of the auger hydraulic cylinder are formed in a straight line, The sum of the length of the hydraulic cylinder and the length of the auger hydraulic cylinder rod exposed to the outside increases the length of the rack from the present invention.

Thus, the present invention is characterized in that the rack 24 is formed in a "━" shape of the gear portion 24-2 and the hinge portion 24-3 and the auger hydraulic cylinder rod 22- 2 are hinged and located on the other side of the gear portion 24-2 of the rack 24, the total length of the lower auger hydraulic device 22 is reduced rather than the straight rack.

As described above, according to the present invention, the extensible rod hydraulic clamp device can be universally used irrespective of the diameter of the extensible rod while sliding the two pressurization throttle plates while facing each other, so that the eccentric pressing force is not generated, And the load hydraulic device and the lower auger hydraulic device are operated by the hydraulic pressure of the hydraulic device of the crawler crane so that the power reduction is small so that the energy efficiency is good and the hydraulic pressure is easily doubled, And the rack is constituted by a gear part and a hinge part in the shape of a circle and the auger hydraulic cylinder rod is located on the other side of the gear part of the rack to reduce the overall length of the lower auger hydraulic device .

Although the present invention has been described in detail with reference to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be construed as being limited to the embodiments described, but should be determined by equivalents to the appended claims, as well as the following claims.

1: upper auger 2: lower auger
3: Reader 4: Screw load
5: casing rod 6: bracket
7: guide rod 10: hydraulic clamp device
11: Hydraulic clamp body 11-1: Guide groove
12: Rod Hydraulic Device 12-1: Throttle Plate Hydraulic Cylinder
12-2: throttle plate hydraulic cylinder rod 13: pressure throttle plate
13-1: protrusion 15: bracket
20: half rotation hydraulic lower auger 21: lower auger body
21-1: Hydraulic section 21-2: Hopper section
21-3: Outlet 22: Lower auger hydraulic device
22-1: auger hydraulic cylinder 22-2: auger hydraulic cylinder rod
24: rack 24-1: rack gear
24-2: gear portion 24-3: hinge portion
25: Pinion 25-1: Pinion gear
30: Casing clamp 31: Clamp housing
31-1: upper frame 31-2: lower frame
31-3: Connection Frame 31-4: Clamp Hydraulic Frame
31-4-1: straight line portion 31-4-2:
35: Clamp hydraulic device 35-1: Clamp hydraulic cylinder
35-2: Clamp hydraulic cylinder rod 35-3: Chuck
a: Crawler crane

Claims (5)

A hydraulic rod clamping device for an extensible rod configured on an upper portion of a lower auger for a ground excavator which moves up and down along a guide rod of a leader of a crawler crane,
A hydraulic clamp body slidably formed on the guide rod and having a guide groove formed in the guide frame and penetrating the guide frame and passing through the frame;
A pressurization throttle plate having a plate-like shape configured to be moved within the hydraulic clamp body and having protrusions whose both side surfaces are inserted into and protruded from the guide grooves, and which are moved in the guide grooves;
And a rod hydraulic device hinged to the pressurization throttle plate;
Wherein the rod hydraulic device operates by a hydraulic action of a crawler crane to reciprocate in the guide groove in the pressurization throttle plate.
The method according to claim 1,
The guide grooves of the hydraulic clamp body are formed in two straight lines in each of the opposed hydraulic clamp body frames;
Wherein the pressurization throttling plate is configured such that two of the pressurization throttling plates are opposed to the center of the hydraulic clamp body, the opposing surfaces are curved, and protruding portions of both side surfaces of the pressurization throttle plate are respectively inserted and projected into the guide grooves;
Wherein an eccentric pressing force is not generated because the pressing shaft is pressed against the two pressing shafts while the pressing shaft is pressed against the two pressing shafts, and the universal use is made irrespective of the diameter of the elongating rod.
3. The method of claim 2,
The rod hydraulic device includes two hydraulic chucks hydraulic cylinders hinged to the respective protrusions of one pressure throttle plate on both sides of the outer surface of the hydraulic clamp body having the guide grooves formed therein and acting as hydraulic pressure of the crawler crane, And two bushing plate cylinder rods which are inserted into the bushes and are inserted into the bushes and are hinged to the protrusions of the other pressurization bushing plate;
Wherein the throttle plate cylinder rod is drawn out to the outside of the throttle plate hydraulic cylinder or inserted into the inside of the throttle plate hydraulic cylinder so that the two pressure throttle plates are reciprocated in a linear direction opposite to each other.
4. The method according to any one of claims 1 to 3,
A lower auger body detachably mounted on a lower side of the hydraulic clamp body and configured to be slidable on a guide rod and to ascend and descend along a guide rod and having an intermediate space on both sides thereof and an upper and a lower center;
Two auger hydraulic cylinders each of which is housed on both side inner spaces of the lower auger body and hinged to one side of one side of one inner side of the lower auger body and operated by the hydraulic pressure of the crawler crane, A lower auger hydraulic device hinge-connected to the other one of the auger hydraulic cylinder rods and having a rack gear formed on one side thereof;
A pinion gear configured to be engaged with a rack gear of the rack is formed on an outer circumferential surface, the pinion gear is constituted by a cylindrical body, and a pinion is positioned at the center of the lower auger body;
The lower auger hydraulic device is configured such that the pinion reciprocates in the hydraulic action of the crawler crane and the rack is opposed with respect to the pinion so that the auger hydraulic cylinder rod is pulled out of the auger hydraulic cylinder or inserted into the two cylinders, Wherein the hydraulic cylinder is reciprocated linearly in directions opposite to each other.
5. The method of claim 4,
Wherein the rack is constituted by a gear portion having a rack gear on one outer surface and a long straight line and a hinge portion extending perpendicularly from one side of the gear portion and hinged to the other side of the auger hydraulic cylinder rod,
Wherein the auger hydraulic cylinder rod is located on the other side of the gear portion of the rack and the gear portion and the auger hydraulic cylinder are configured in parallel to reduce the overall length of the lower auger hydraulic device.

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