KR20230097622A - Excavating machine - Google Patents

Abstract

The present invention is to provide an excavation machine suitable for easily inserting a slip ring into a center joint without disassembling a lower arm, a rotating arm, and an upper arm. The excavating machine according to the present invention comprises: the lower arm having a width which gradually increases from one end to the other end and a fixing hole on the outer peripheral surface at the other end; the rotating arm located on the other end of the lower arm, formed in a disk shape, and rotationally fixed to the lower arm; the upper arm located on the rotating arm, fixed to the rotating arm, and having a guide hole on an outer peripheral surface of the rotating arm; the center joint surrounded by the lower arm, the rotating arm, and the upper arm and exposed to the outside through the fixing hole in the lower arm and the guide hole in the upper arm; and the slip ring inserted into or separated from the center joint through the guide hole in the upper arm.

Description

Excavation equipment {EXCAVATING MACHINE}

The present invention relates to a drilling device that improves the freedom of installation of a slip ring on a center joint in a state where the center joint is located inside an articulated arm.

In general, an excavator allows work efficiency to be sought while reducing input manpower despite an increase in the load and volume of a work object at a construction site, a waste collection point, or a demolition site. To this end, the excavator 160 of FIG. 1 attaches a bucket 120 and tongs 140 to arms 10, 20, and 40 made of multi-joints at a construction site, a waste collection site, or a demolition site. and engage the tongs 140 to the bucket 120 during the movement of the bucket cylinder 90 and the tongs cylinder 130 around the arms 10, 20, 40 Used to transport wood, stone and waste concrete do.

Referring to FIG. 1, the bucket 120 is rotationally fixed to one end of the arms 10, 20, and 40 in the excavator 160, and the other end of the arms 10, 20, and 40 is fixed to the excavator 160. ) is rotated and fixed to a boom (not shown in the drawing). Accordingly, the concave inlet of the bucket 120 opens toward the driver's seat of the excavator 160 or opens toward the driver's seat of the excavator 160 during relative rotation of the arms 10, 20, and 40 with respect to the boom. .

Here, the arms 10, 20, and 40 are composed of a lower rotary arm 10, a rotary driver 20, and an upper rotary arm 40 that are sequentially stacked to form a single pillar shape. The rotary driver 20 relatively rotates the lower rotary arm 10 with respect to the upper rotary arm 40 . In addition, the excavator 160 has a link structure 100 and a tilt link 110 between the lower rotary arm 10 and the bucket 120, and the lower rotation through the link structure 100 and the tilt link 110 The bucket 120 is connected to the arm 10.

The tilt link 110 is coupled to the bucket 120 together with the link structure 100 to rotate the bucket 120 around the end of the lower rotary arm 10. Through this, the self-rotation of the articulated arm and the self-rotation of the tilt link 110 are different from the movement of the link structure 100. During the relative rotation of the articulated arms 10, 20, and 40 with respect to the boom, the bucket 120 The opening direction of the concave-shaped inlet of the can be continuously and freely changed. Meanwhile, the lower rotary arm 10, the rotary driver 20, and the upper rotary arm 40, considering FIGS. 2 and 3, surround the center joint 60 and the slip ring 80.

The center joint 60 has a joint housing 54 and a joint shaft 58 as shown in FIGS. 2 and 3 . The joint shaft 58 rotates relative to the joint housing 54 . As shown in FIGS. 1 and 3, the joint housing 54 and the joint shaft 58 have a first hole 5 of the lower rotary arm 10 and a second hole 35 of the upper rotary arm 40. exposed to the outside through As shown in FIG. 2, the slip ring 80 has an input end 74 and an output end 78. The slip ring 80 exposes the input end 74 and the output end 78 to the outside through the first hole 5 of the lower rotary arm 10 and the second hole 35 of the upper rotary arm 40. .

The input terminal 74 receives power from the excavator 160, and the output terminal 78 is connected to an electronic device (eg, a leveler, etc.; not shown in the drawing) to supply power of the input terminal 74 to the electronic device. supply to However, when the output end 78 of the slip ring 80 is inserted into the center joint 60, the upper rotary arm 40 and the center joint 60, in FIG. 2 Introducing the slip ring 80 into the second hole 35 by making the width between the upper rotary arm 40 and the joint shaft 60 smaller than the diameter of one hydraulic line L1 in the hole 35 form a difficult structure;

Therefore, when the electronic device fails or the input end 74 or the output end of the slip ring 80 is disconnected, the center joint ( Insertion of the new slip ring 80 into 60 requires disassembly of the lower rotary arm 10 and the upper rotary arm 40 from the rotary driver 20 . In addition, disassembly of the lower rotary arm 10 and the upper rotary arm 40 from the rotary driver 20 removes the plurality of hydraulic lines L1 from the center joint 60 and rotates the lower rotary arm 10 It is performed by repeatedly changing the state of the plurality of screw members (B) connecting the driver 20 from the tightened state to the loosened state.

Therefore, the insertion of the new slip ring 80 into the center joint 60 is related to the disassembly of the multi-joint arms 10, 20 and 40 and the disassembly of the center joint 60 from the plurality of hydraulic lines L1. It requires a lot of labor of the operator and delays the work schedule at the excavator work site, thereby deteriorating the environment at the excavator work site. Meanwhile, the excavator 160 is similarly disclosed as a prior art in Korean Utility Model Registration No. 20-0469569.

Korea Registered Utility Model Publication No. 20-0469569

The present invention has been made to solve the conventional problems, and the slip ring is easily inserted into the center joint without disassembling the lower arm, the rotary arm, and the upper arm while surrounding the center joint with the lower arm, the rotary arm, and the upper arm. Its purpose is to provide a drilling device suitable for

An excavation apparatus according to the present invention includes a lower arm having a width gradually increasing from one end toward the other end and having a fixing hole on an outer circumferential surface at the other end; a rotating arm that is located on the other end of the lower arm, has a disk shape, and is rotationally fixed to the lower arm; an upper arm positioned on the rotary arm, fixed to the rotary arm, and having a guide hole on an outer circumferential surface of the rotary arm; a center joint surrounded by the lower arm, the rotary arm and the upper arm and exposed to the outside through the fixing hole of the lower arm and the guide hole of the upper arm; and a slip ring inserted into the center joint or separated from the center joint through the guide hole of the upper arm, wherein the upper arm and the center joint are externally viewed through the guide hole of the upper arm. A central space width between the upper arm and the center joint based on the uppermost end of the center joint may be larger than diameters of the two hydraulic lines.

The rotary arm has a lower swivel and an upper swivel sequentially stacked on the lower arm, and a drive motor for relatively rotating the lower swivel with respect to the upper swivel, and the lower swivel through the lower swivel and the upper swivel. The arm and the upper arm may be coupled to each other.

The lower arm has a seating hole on a surface perpendicular to the longitudinal direction of the lower arm, and the rotation arm unit passes through the central region of the lower rotation table and the upper rotation table sequentially stacked, and the lower rotation table and the upper rotation table. When having a hole, the center joint is inserted into the seating hole in the lower arm joint housing fixed to the lower rotary arm of the rotary arm; and a joint shaft inserted into the joint housing, relatively rotated with respect to the joint housing, and protruding toward the upper arm via the through hole of the rotary arm.

The slip ring may include a fixing part positioned outside the center joint, a rotating part inserted into the fixing part and located outside the center joint and rotating relatively to the fixing part, and a part of the rotating part starting from the rotating part. It may have an input end extending toward the side, and an output end extending from the rotating part toward the other side of the rotating part.

When the center joint has a joint housing and a joint shaft inserted into the joint housing, and the slip ring is inserted into the joint housing and the joint shaft in a state separated from the center joint, the slip ring The output end is inserted into the guide hole of the upper arm, passes through the joint shaft and the joint housing sequentially, is exposed to the fixing hole of the lower arm, and then is pulled toward the outside from the fixing hole of the lower arm, The fixed part and the rotating part of the slip ring are partially inserted into the joint shaft while being guided toward the guide hole of the upper arm during pulling of the output end, and the input end of the slip ring is pulled toward the output end. While being led toward the guide hole of the upper arm together with the fixing part and the rotating part, it may start from the rotating part and extend toward the outside through the guide hole of the upper arm.

When the center joint has a joint housing and a joint shaft inserted into the joint housing, and the slip ring is separated from the joint housing and the joint shaft while being coupled to the center joint, the slip ring The input end is pulled toward the outside from the guide hole of the upper arm, and the fixed part and the rotating part of the slip ring are separated from the joint shaft during pulling of the input end, and the input end is pulled out from the guide hole of the upper arm. The output end of the slip ring may pass through the joint housing and the joint shaft sequentially while the input end is pulled, and may be separated from the joint shaft.

The excavator further includes a piece cover on the guide hole of the upper arm, and the upper arm has a rounding circumference on the center joint in the guide hole of the upper arm, and a plurality of rounding circumferences. The piece cover has a coupling hole and a screw member aligned with the coupling ring of the rounding periphery, and the screw member is inserted into the coupling hole of the piece cover and the coupling ring of the rounding circumference. It can be screwed to the upper arm.

The excavator further includes a piece cover on the guide hole of the upper arm, and the upper arm has a rounding circumference on the center joint in the guide hole of the upper arm, and a plurality of rounding circumferences. The single cover has a fitting protrusion aligned with the fitting groove of the rounding circumference, and the fitting protrusion of the single cover is inserted into the fitting groove of the rounding circumference to be fitted to the upper arm. can be combined

The excavator further includes a piece cover on the guide hole of the upper arm, and the upper arm has a rounding circumference on the center joint in the guide hole of the upper arm, and two rims on the rounding circumference. With an auxiliary hinge, the piece cover has a main hinge and a hinge pin aligned with the two auxiliary hinges of the rounding periphery, the individual auxiliary hinges of the rounding periphery and the hinge pin on the main hinge of the piece cover. It can be inserted and hinged to the upper arm.

The excavator further includes a piece cover on the guide hole of the upper arm, wherein the upper arm has a rounding circumference on the center joint in the guide hole of the upper arm, and a central region of the rounding circumference. two auxiliary hinges positioned, and two magnets positioned at both edges of the rounding periphery, wherein the piece cover has a main hinge and a hinge pin aligned with the two auxiliary hinges of the rounding periphery; The hinge pin may be inserted into the individual auxiliary hinges of the circumference and the main hinge of the piece cover to be hingedly coupled to the upper arm and attracted by the magnetic force of the individual magnets of the rounding circumference.

When the upper arm has a round circumference positioned on the center joint in a guide hole of one side of the upper arm and an angled circumference positioned on the center joint in a guide hole of the other side of the upper arm, The guide hole of the round circumference portion may be opened larger in the upper arm than the guide hole of the angled circumference portion between the center joint and the upper arm based on the uppermost end of the center joint.

When the upper arm has a round circumference positioned on the center joint in a guide hole of one side of the upper arm and an angled circumference positioned on the center joint in a guide hole of the other side of the upper arm, The round circumference may be dug deeper than the angled circumference in the upper arm based on the uppermost end of the center joint to have the same curvature as a ceiling facing the center joint.

The excavator includes a bucket cylinder and a tongs cylinder which are positioned on one side and the other side of the lower arm and are rotationally fixed to the other end of the lower arm; a link structure positioned at one end of the lower arm and rotationally fixed to the lower arm and the bucket cylinder; A tilt link located under the link structure and rotationally fixed to the link structure; a bucket rotationally fixed to the tilt link below the tilt link; And it may further include tongs positioned at one end of the lower arm and rotationally fixed to the lower arm and the tongs cylinder.

The drilling rig according to the present invention,

The lower arm, the rotating arm and the upper arm sequentially stacked to form a multi-joint arm, the fixing hole located in the lower arm right below the rotating arm, and the guide hole located in the upper arm just above the rotating arm, and the lower arm and rotation While having a center joint inserted into the arm and the upper arm,

Expose the joint housing of the center joint in the fixing hole of the lower arm and the joint shaft of the center joint in the guide hole of the upper arm, and the center between the joint shaft and the upper arm based on the top of the center joint in the guide hole of the upper arm. Since the space width is larger than the diameter of the two hydraulic lines,

By surrounding the center joint with the lower arm, the rotary arm and the upper arm, the slip ring can be easily inserted into the center joint without disassembling the lower arm, the rotary arm and the upper arm.

1 is a side view partially showing an excavator according to the prior art.
FIG. 2 is an image showing a coupling relationship between a center joint and a slip ring in the excavator of FIG. 1 .
FIG. 3 is an image showing a center joint (slip ring not shown) positioned on a lower rotary arm, a rotary driver, and an upper rotary arm in the excavator of FIG. 1 .
4 is a side view partially showing a drilling rig according to the present invention.
5 is an exploded perspective view partially showing the drilling device of FIG. 4 .
FIG. 6 is an enlarged image showing a lower arm, a driving motor unit, and a center joint located on an upper arm in the excavation apparatus of FIG. 4 by area.
FIG. 7 is an image showing a positional relationship between an upper arm and a center joint of FIG. 6 .
FIG. 8 is an image showing a piece cover positioned on the upper arm of FIG. 7 .
Fig. 9 is a first modification of the upper arm and piece cover of Fig. 8;
Fig. 10 is a second modification to the upper arm and piece cover of Fig. 8;
Fig. 11 is a third modification of the upper arm and piece cover of Fig. 8;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of the present invention described above refers to the accompanying drawings which illustrate, by way of example, specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable any person skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention in relation to one embodiment. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the detailed description set forth below is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all equivalents as claimed by those claims. Similar reference numerals in the drawings indicate the same or similar functions in various aspects, and the length, area, thickness, and the like may be exaggerated for convenience.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily practice the present invention.

Figure 4 is a side view partially showing the drilling device according to the present invention, Figure 5 is an exploded perspective view partially showing the drilling device of Figure 4, Figure 6 is a lower arm, a drive motor unit and an upper arm in the drilling device of FIG. This is an image that shows the center joint located in , enlarged by region.

Also, FIG. 7 is an image showing the positional relationship between the upper arm and the center joint of FIG. 6 , and FIG. 8 is an image showing a piece cover positioned on the upper arm of FIG. 7 .

4 to 8, the drilling device 410 according to the present invention, in FIG. 4, the lower arm 210, the rotary arm 230, the upper arm 250, and the center joint 270 , and a slip ring 289. When viewed schematically, the lower arm 210, in FIGS. 4 to 6, has a width that gradually increases from one end toward the other end and has a fixing hole 208 on the outer circumferential surface at the other end.

4 to 6, the rotary arm 230 is located on the other end of the lower arm 210, has a disk shape, and is rotationally fixed to the lower arm 210. 4 to 6, the upper arm 250 is positioned on the rotary arm 230, is fixed to the rotary arm 230, and has a guide hole 244 on the outer circumferential surface of the rotary arm 230.

4 to 6, the center joint 270 is surrounded by the lower arm 210, the rotary arm 230, and the upper arm 250, and the fixing hole 208 of the lower arm 210 and the upper arm It is exposed to the outside through the guide hole 244 of 250. Considering FIG. 6 , the slip ring 289 is inserted into or separated from the center joint 270 through the guide hole 244 of the upper arm 250 .

The center joint 270 and the slip ring 289 have the same shape as the center joint 60 and the slip ring 80 of FIG. 2 . Here, the upper arm 250 and the center joint 270, in FIGS. 6 and 7, when viewed visually, based on the uppermost end of the center joint 270 in the guide hole 244 of the upper arm 250 Thus, the width of the central space between the upper arm 250 and the center joint 270 is greater than the diameter of the two hydraulic lines L2.

In more detail, the rotary arm 230, in FIGS. 4 to 6, a lower rotary table 223, an upper rotary table 226, and an upper rotary table 226 sequentially stacked on the lower arm 210 ) and has a drive motor unit 229 that relatively rotates the lower swivel 223 with respect to, and engages the lower arm 210 and the upper arm 250 through the lower swivel 223 and the upper swivel 226, respectively. .

The lower arm 210, in FIG. 5, has a seating hole 204 on a surface perpendicular to the longitudinal direction of the lower arm 210, and the rotating arm 230, in FIG. 5, is sequentially stacked. When having a through hole 225 passing through the center area of the swivel table 223 and the upper swivel table 226 and the lower swivel table 223 and the upper swivel table 226, the center joint 270 is shown in FIGS. 4 to 6 In , it includes a joint housing 264 and a joint shaft 268 .

Considering FIGS. 5 and 6 , the joint housing 264 is inserted into the seating hole 204 of the lower arm 210 and fixed to the lower rotary table 223 of the rotary arm 230. Considering FIGS. 5 and 6 , the joint shaft 268 is inserted into the joint housing 264 and relatively rotates with respect to the joint housing 264 and passes through the through hole 225 of the rotating arm 230. and protrudes toward the upper arm 250.

Considering FIGS. 5 to 7 , the slip ring 289 is positioned outside the center joint 270 by being inserted into the fixing part 282 located outside the center joint 270 and the fixing part 282 . and a rotation unit 284 that rotates relative to the fixed unit 282, an input end 286 starting from the rotation unit 284 and extending toward one side of the rotation unit 284, and a rotation unit starting from the rotation unit 284 ( 284 has an output end 288 extending towards the other side.

The center joint 270, in FIGS. 5 and 6, has a joint housing 264 and a joint shaft 268 inserted into the joint housing 264, and the slip ring 289 is shown in FIGS. 6, when inserted into the joint housing 264 and the joint shaft 268 in a state separated from the center joint 270, the output end 288 of the slip ring 289, see FIGS. 5 to 7 , It is inserted into the guide hole 244 of the upper arm 250, passes through the joint shaft 268 and the joint housing 264 sequentially, and is exposed to the fixing hole 208 of the lower arm 210, and then the lower arm 210 It is pulled toward the outside from the fixing hole 208 of the.

5 to 7, the fixing part 282 and the rotating part 284 of the slip ring 289 are directed toward the guide hole 244 of the upper arm 250 during pulling of the output end 288. While being drawn, it is partially inserted into the joint shaft 268. 5 to 7, the input end 286 of the slip ring 289, together with the fixed part 282 and the rotating part 284 during pulling of the output end 288, guide holes of the upper arm 250 ( 244, it starts from the rotating portion 284 and extends outward through the guide hole 244 of the upper arm 250.

Alternatively, the center joint 270, in FIGS. 5 and 6, has a joint housing 264 and a joint shaft 268 inserted into the joint housing 264, and the slip ring 289 is 5 and 6, when separated from the joint housing 264 and the joint shaft 268 while being coupled to the center joint 270, the input end 286 of the slip ring 289, as shown in FIGS. 5 to 7 Referring to , it is pulled toward the outside from the guide hole 244 of the upper arm 250 .

5 to 7, the fixing part 282 and the rotating part 284 of the slip ring 289 are separated from the joint shaft 268 while the input end 286 is pulled, and the upper arm 250 It is led toward the outside from the guide hole 244 of the. Referring to FIGS. 5 to 7 , the output end 288 of the slip ring 289 sequentially passes through the joint housing 264 and the joint shaft 268 while the input end 286 is pulled from the joint shaft 268. separate

The drilling rig 410, in consideration of FIGS. 7 and 8, further includes a piece cover 300 on the guide hole 244 of the upper arm 250. Here, the upper arm 250, in FIGS. 6 and 7, has a rounding circumferential portion R on the center joint 270 in the guide hole 244 of the upper arm 250, and a rounding circumferential portion R It has a plurality of coupling rings 242 positioned on. Considering FIGS. 6 to 8 , the short cover 300 has a coupling hole 294 and a screw member 298 aligned with the coupling ring 242 of the round circumference R, and the short cover ( 300), the screw member 298 is inserted into the coupling hole 294 and the coupling ring 242 of the round circumference R, and is screwed to the upper arm 250.

Considering FIGS. 4, 6, and 7 , the upper arm 250 has a rounded circumferential portion R located on the center joint 270 in the guide hole 244 of one side of the upper arm 250. When having an angular circumference (S) located on the center joint 270 in the guide hole 248 of the other side of the upper arm 250, the guide hole 244 of the round circumference (R) Considering FIGS. 4, 6, and 7, the guide hole 248 of the angled circumference S between the center joint 270 and the upper arm 250 based on the top of the center joint 270 The upper arm 250 has a larger opening.

In addition, considering FIGS. 4, 6, and 7, the upper arm 250 has a round circumference located on the center joint 270 in the guide hole 244 of one side of the upper arm 250 ( R) and an angular circumference S located on the center joint 270 in the guide hole 248 of the other side of the upper arm 250, the round circumference R is shown in FIG. 6 And considering FIG. 7 , based on the uppermost end of the center joint 270, the upper arm 250 is dug deeper than the angled circumference S and has the same curvature as the ceiling facing the center joint 270.

On the other hand, the drilling device 410, in FIG. 4, further includes a bucket cylinder 350, a link structure 360, a tilt link 370, a bucket 380, a tongs cylinder 390, and tongs 400 do. The bucket cylinder 350 and the clamp cylinder 390 are positioned on one side and the other side of the lower arm 210, respectively, and are rotationally fixed to the other end of the lower arm 210. The link structure 360 is positioned at one end of the lower arm 210 and is rotationally fixed to the lower arm 210 and the bucket cylinder 350 .

In addition, the tilt link 370 is positioned under the link structure 360 and is rotationally fixed to the link structure 360 . The bucket 380 is rotationally fixed to the tilt link 370 below the tilt link 370 . The tongs 400 are positioned at one end of the lower arm 210 and are rotationally fixed to the lower arm 210 and the tongs cylinder 390.

Fig. 9 is a first modification of the upper arm and piece cover of Fig. 8;

Referring to FIG. 9 , the upper arm 253 and the single cover 320 according to the first modification of the present invention have structures different from those of the upper arm 250 and the single cover 300 of FIGS. 6 to 8 . . Looking in more detail, the drilling device 410 further includes a piece cover 320 on the guide hole 249 of the upper arm 253.

Considering FIGS. 7 and 9 , the upper arm 253 has a rounding circumferential portion R on the center joint 270 in the guide hole 249 of the upper arm 253, and a rounding circumferential portion R It has a fitting groove 244 that is located in plurality. In FIG. 9 , the short cover 320 has a fitting protrusion 315 aligned with the fitting groove 244 of the round rim R, and fits into the fitting groove 244 of the round rim R. The fitting protrusion 315 of 320 is inserted and coupled to the upper arm 253.

Fig. 10 is a second variation of the upper arm and piece cover of Fig. 8;

Referring to FIG. 10 , the upper arm 256 and the single cover 340 according to the second modified example of the present invention have structures different from those of the upper arm 250 and the single cover 300 of FIGS. 6 to 8 . . Looking in more detail, the drilling device 410 further includes a piece cover 340 on the guide hole 249 of the upper arm 256.

Considering FIGS. 7 and 10 , the upper arm 256 has a rounding circumferential portion R on the center joint 270 in the guide hole 249 of the upper arm 256, and a rounding circumferential portion R It has two auxiliary hinges (246). The piece cover 340, in FIG. 10, has a main hinge 334 and a hinge pin 338 aligned with two auxiliary hinges 246 of the round circumference R, A hinge pin 338 is inserted into the individual auxiliary hinges 246 and the main hinge 334 of the piece cover 340 to be hinged to the upper arm 256 .

That is, the piece cover 340 is hinged to the upper arm 256 and fixed to the upper arm 256 by rotation (R1).

Fig. 11 is a third modification of the upper arm and piece cover of Fig. 8;

Referring to FIG. 11 , the upper arm 259 and the single cover 340 according to the third modification of the present invention have structures different from those of the upper arm 250 and the single cover 300 of FIGS. 6 to 8 . . Looking in more detail, the drilling device 410 further includes a piece cover 340 on the guide hole 249 of the upper arm 259.

Considering FIGS. 7 and 11 , the upper arm 259 has a rounding circumferential portion R on the center joint 270 in the guide hole 249 of the upper arm 259, and a rounding circumferential portion R It has two auxiliary hinges 246 located in the central area of , and two magnets 247 located at both edges of the round circumference (R). The piece cover 340, in FIG. 11, has a main hinge 334 and a hinge pin 338 aligned with two auxiliary hinges 246 of the round circumference R, The hinge pin 338 is inserted into the individual auxiliary hinge 246 and the main hinge 334 of the short cover 340, and the magnetic force of the individual magnet 247 of the round circumference R is hinged to the upper arm 259 attracted to

That is, the piece cover 340 is hinged to the upper arm 259 and fixed to the upper arm 259 by rotation (R2).

204; seating hole, 208; fixed hole
210; lower arm, 223; lower swivel
225; through hole, 226; upper swivel
229; drive motor unit, 230; swivel arm
244; guide hole, 250; upper arm
264; joint housing, 268; joint shaft
270; center joint, 286; input stage
288; output stage, 289; slip ring

Claims (13)

a lower arm having a width gradually increasing from one end toward the other end and having a fixing hole on an outer circumferential surface of the other end;
a rotating arm that is located on the other end of the lower arm, has a disk shape, and is rotationally fixed to the lower arm;
an upper arm positioned on the rotary arm, fixed to the rotary arm, and having a guide hole on an outer circumferential surface of the rotary arm;
a center joint surrounded by the lower arm, the rotary arm and the upper arm and exposed to the outside through the fixing hole of the lower arm and the guide hole of the upper arm; and
A slip ring inserted into the center joint or separated from the center joint through the guide hole of the upper arm,
The upper arm and the center joint,
Externally, with respect to the uppermost end of the center joint in the guide hole of the upper arm, the center space width between the upper arm and the center joint is greater than the diameter of the two hydraulic lines.
According to claim 1,
The rotating arm,
A lower rotary table and an upper rotary table sequentially stacked on the lower arm, and a drive motor unit for relatively rotating the lower rotary table with respect to the upper rotary table,
A drilling rig coupled to the lower arm and the upper arm through the lower swivel and the upper swivel, respectively.
According to claim 1,
the lower arm,
It has a seating hole on a surface perpendicular to the longitudinal direction of the lower arm,
The rotating arm stand,
When having a sequentially stacked lower turntable and upper turntable, and a through hole passing through the central region of the lower turntable and the upper turntable,
The center joint,
a joint housing inserted into the seating hole in the lower arm and fixed to the lower rotary arm of the rotary arm; and
And a joint shaft inserted into the joint housing to rotate relative to the joint housing and protruding toward the upper arm via the through hole of the rotary arm.
According to claim 1,
The slip ring,
A fixing part positioned outside the center joint, a rotating part inserted into the fixing part and located outside the center joint and rotating relatively to the fixing part, starting from the rotating part and extending toward one side of the rotating part A drilling rig having an input end and an output end starting from the rotary part and extending towards the other side of the rotary part.
According to claim 4,
the center joint,
A joint housing and a joint shaft inserted into the joint housing,
The slip ring,
When inserted into the joint housing and the joint shaft in a state separated from the center joint,
The output end of the slip ring,
It is inserted into the guide hole of the upper arm, passes through the joint shaft and the joint housing sequentially, is exposed to the fixing hole of the lower arm, and then is pulled toward the outside from the fixing hole of the lower arm;
The fixed part and the rotating part of the slip ring,
being partially inserted into the joint shaft while being guided toward the guide hole of the upper arm during pulling of the output end;
The input end of the slip ring,
The drilling rig, starting from the rotating portion and extending toward the outside through the guide hole of the upper arm while being led toward the guide hole of the upper arm together with the fixed portion and the rotating portion during pulling of the output end.
According to claim 4,
the center joint,
A joint housing and a joint shaft inserted into the joint housing,
The slip ring,
When separated from the joint housing and the joint shaft in a state coupled to the center joint,
The input end of the slip ring,
pulled toward the outside from the guide hole of the upper arm;
The fixed part and the rotating part of the slip ring,
During the pulling of the input end, it is separated from the joint shaft and guided toward the outside from the guide hole of the upper arm;
The output end of the slip ring is
During the pulling of the input end, the drilling rig passes through the joint housing and the joint shaft sequentially and is separated from the joint shaft.
According to claim 1,
Further comprising a piece cover on the guide hole of the upper arm,
The upper arm,
Having a rounding circumference on the center joint in the guide hole of the upper arm, and a plurality of coupling rings positioned on the rounding circumference,
The short cover,
It has a coupling hole and a screw member aligned with the coupling ring of the rounding circumference,
The drilling device is screwed to the upper arm by inserting a screw member into the coupling hole of the piece cover and the coupling ring of the rounding circumference.
According to claim 1,
Further comprising a piece cover on the guide hole of the upper arm,
The upper arm,
A rounding circumference on the center joint in the guide hole of the upper arm, and a plurality of fitting grooves located in the rounding circumference,
The short cover,
Having a fitting protrusion aligned with the fitting groove of the rounding circumference,
The drilling device is fitted to the upper arm by inserting the fitting protrusion of the piece cover into the fitting groove of the rounding circumference.
According to claim 1,
Further comprising a piece cover on the guide hole of the upper arm,
The upper arm,
A rounding circumference on the center joint in the guide hole of the upper arm, and two auxiliary hinges on the rounding circumference,
The short cover,
having a main hinge and a hinge pin aligned with the two auxiliary hinges of the rounding circumference;
The drilling rig is hinged to the upper arm by inserting the hinge pin into the individual auxiliary hinge of the rounding circumference and the main hinge of the piece cover.
According to claim 1,
Further comprising a piece cover on the guide hole of the upper arm,
The upper arm,
A rounding circumference on the center joint in the guide hole of the upper arm, two auxiliary hinges located in the central region of the rounding circumference, and two magnets located at both edges of the rounding circumference,
The short cover,
having a main hinge and a hinge pin aligned with the two auxiliary hinges of the rounding circumference;
The drilling rig, wherein the hinge pin is inserted into the individual auxiliary hinge of the rounding circumference and the main hinge of the piece cover to be hinged to the upper arm and attracted by the magnetic force of the individual magnet of the rounding circumference.
According to claim 1,
the upper arm,
A rounding circumference located on the center joint in the guide hole of one side of the upper arm,
When the guide hole of the other side of the upper arm has an angled circumference positioned on the center joint,
The guide hole of the rounding circumference,
Based on the top end of the center joint, the drilling device is opened to the upper arm larger than the guide hole of the angled circumference between the center joint and the upper arm.
According to claim 1,
the upper arm,
A rounding circumference located on the center joint in the guide hole of one side of the upper arm,
When the guide hole of the other side of the upper arm has an angled circumference located on the center joint,
The rounding circumference,
Based on the uppermost end of the center joint, the upper arm is dug deeper than the angled circumference and has the same curvature as the ceiling facing the center joint.
According to claim 1,
bucket cylinders and tongs cylinders positioned on one side and the other side of the lower arm and rotationally fixed to the other end of the lower arm;
a link structure positioned at one end of the lower arm and rotationally fixed to the lower arm and the bucket cylinder;
A tilt link located under the link structure and rotationally fixed to the link structure;
a bucket rotationally fixed to the tilt link under the tilt link; and
Further comprising a tongs positioned on the one end of the lower arm and rotationally fixed to the lower arm and the tongs cylinder.

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