KR102285952B1 - Ground excavating device - Google Patents

Abstract

The present invention provides a ground excavation apparatus that primarily blocks vibration from a hammer by installing a first shock absorber between a rod and a hammer, thereby preventing noise generation, and, furthermore, sprays water to an upper part of the hammer to prevent dust scattering, and, in addition, secondarily blocks the transmission of shock (vibration) from the rod to an auger by installing a second shock absorber.

Description

Ground excavation device using hammer to prevent noise, vibration and dust scattering {GROUND EXCAVATING DEVICE}

The present invention relates to a ground excavator for preventing noise, vibration, and dust scattering generated during a ground excavation process using a hammer in a ground excavation device in which a hammer is provided under a rod for excavating the ground.

A ground excavation device using a hammer is widely used for pile construction of foundation civil works.

As a prior art, Korean Patent Registration No. 10-1235672 "A shock absorber for a ground excavator" (registered on February 15, 2013) and the like has been proposed.

11 is a conceptual diagram of a conventional ground excavation apparatus.

The ground excavation apparatus 1 includes a post frame 10 vertically installed on one side of the tip of the crawler crane 5 having a large maneuverability as shown in FIG. 1 ; an auger device 20 suspended by a wire or the like on the upper side of the guide 11 of the post frame 10; a screw rod 25 connected to the output shaft of the auger device 20 and rotating in both directions by driving a motor; a rod casing 50 installed at the lower end of the auger device 20 in a state in which the screw rod 25 is embedded; a hammer (60) operated by compressed air and provided at the lower end of the screw rod (25) for perforating the rock or the ground through the rotation action according to the motor driving and the hitting action of the hammer bit (61); It is connected and installed between the output shaft of the auger device 20 and the screw rod 25 and consists of a shock absorber 70 that relieves the impact force transmitted from the hammer 60 during the ground excavation work.

When the rock or bedrock layer of the ground is drilled using the ground excavation device 1 configured as described above, noise caused by the operation of the hammer 60, civil complaints due to impact and dust, etc. are caused, and the excavation work is often stopped.

The conventional shock absorber 70 is mounted between the auger device 20 and the screw rod 25 to cushion the impact force transmitted from the hammer 60 to protect the auger device 20, but it has no role in noise or dust. can't do

Republic of Korea Patent No. 10-1235672 "Buffer for ground excavation device" (Registered on February 15, 2013)

The present invention has been devised to solve the problems of the prior art as described above, and by installing a first shock absorber between the rod and the hammer, vibration from the hammer is primarily blocked, thereby preventing noise generation and further preventing dust scattering For this purpose, we would like to propose a ground excavation device that can spray water to the upper part of the hammer and install a second shock absorber between the rod and the auger to secondarily block the transmission of shock (vibration) from the rod to the auger. .

In order to solve the above problems, the present invention provides an auger, a rod provided under the auger, a hammer provided at the lower end of the rod and operated by compressed air, and a first provided between the hammer and the rod a shock absorber, and a second shock absorber provided between the rod and the auger; The first shock absorber, in the form of a tube extending in the vertical direction, has an upper end inserted into and coupled to the lower end of the rod, a first compressed air passage is formed along the inside in a vertical direction, and protrudes outward in a radial direction on an outer circumferential surface of the middle portion in the vertical direction. The first coupling tube having the first packing support jaw formed thereon is coupled to the lower end in the form of a tube extending in the vertical direction, and the upper end of the hammer is inserted and coupled to the lower end, and the upper end is coupled to the lower end of the first coupling tube so as to be swingable in the vertical direction. and a second coupling pipe having a second packing support jaw formed on the inner circumferential surface of the upper and lower middle part, an external cushioning packing provided between the lower surface of the first packing support jaw and the upper end of the second coupling pipe, and the second packing An internal buffer packing provided between the upper surface of the supporting jaw and the lower end of the first coupling pipe, a coupling ring provided horizontally along the upper end of the outer circumferential surface of the second coupling pipe, and the lower end of the outer circumferential surface of the second coupling pipe A first cover ring provided horizontally, a second cover ring provided horizontally along a middle portion of an outer circumferential surface of the second coupling tube, and an inner circumferential surface coupled to the coupling ring, the first cover ring, and the second cover ring, A tube for a housing forming a buffer chamber for water injection together with the first cover ring, the second cover ring, and the second coupling tube, and a plurality of portions provided in a portion of the tube for housing forming the buffer chamber for water injection a first water supply pipe having a nozzle for spraying water, a lower end penetrating the second cover ring to communicate with the buffer chamber for water spraying, and a first water supply pipe having an upper end penetrating the coupling ring and protruding to an upper portion of the coupling ring; The rod includes a water supply pipe for the rod extending in the vertical direction and a compressed air passage for the rod extending in the vertical direction; The second shock absorber is formed with a second compressed air passage extending in the vertical direction along the inside; a second water supply pipe provided between the upper end of the rod and the auger to supply water from the auger to the water supply pipe for the rod of the rod; an elastic joint pipe is provided between the lower end of the water supply pipe for the rod and the upper end of the first water supply pipe between the first shock absorber and the rod; is characterized by

As described above, in the present invention, the first shock absorber is installed between the rod and the hammer to primarily block vibration from the hammer, thereby preventing noise generation, and further, water can be sprayed onto the upper part of the hammer to prevent dust scattering. To provide a ground excavation device that can secondaryly block the transmission of shock (vibration) from the rod to the auger by installing a second shock absorber between the rod and the auger.

1 is a conceptual diagram of a ground excavation apparatus according to an embodiment of the present invention;
2 is a conceptual diagram of the main part of FIG. 1;
3 is a conceptual diagram expressing the main part of FIG. 2 separately;
4 is a conceptual cross-sectional view of the first shock absorber of FIG. 2;
5 is a cross-sectional view taken along line AA of FIG. 4 ;
Figure 6 is a cross-sectional view of the first coupling tube of Figure 4,
7 is a cross-sectional view BB of FIG. 6 ,
8 is a cross-sectional view showing the coupling structure of the second coupling pipe and the housing pipe of FIG. 4;
9 is a cross-sectional view CC of FIG. 8;
10 is a DD reference cross-sectional view of FIG.
11 is a conceptual diagram of a ground excavation apparatus according to the prior art.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are given to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

1 is a conceptual diagram of a ground excavation apparatus according to an embodiment of the present invention, FIG. 2 is a conceptual diagram of the main part of FIG. 1, FIG. 3 is a conceptual diagram expressing the main part of FIG. 2 separately, and FIG. 1 is a conceptual cross-sectional view of the shock absorber, FIG. 5 is a cross-sectional view AA of FIG. 4 , FIG. 6 is a cross-sectional view of the first coupling tube of FIG. 4 , FIG. 7 is a cross-sectional view of the BB reference of FIG. 2 is a cross-sectional view showing the coupling structure of the coupling tube and the housing tube, FIG. 9 is a CC reference cross-sectional view of FIG. 8, and FIG. 10 is a DD reference cross-sectional view of FIG.

In the ground excavation apparatus of this embodiment, as shown in FIG. 1 , a post frame 710 is vertically installed on one side of the tip of the crawler crane 700 , and the auger 100 along the guide 711 of the post frame 710 . is provided to be movable up and down.

The auger 100 descends along the guide 711 when the wire is unwound as a state in which the auger 100 is hung on the wire, and rises along the guide 711 when the wire is wound.

The second shock absorber 200 , the rod 300 , the first shock absorber 400 , and the hammer 500 are sequentially coupled to the lower end of the auger 100 (ie, the output shaft of the auger 100 ).

Accordingly, the output shaft of the auger 100 is rotated by driving the motor inside the auger 100 , and the second shock absorber 200 , the rod 300 , the first shock absorber 400 , and the hammer coupled to the output shaft of the auger 100 . 500 can be rotated together.

In addition, the rod casing 800 is provided in the guide 711 to be movable up and down, and the rod 300 , the first shock absorber 400 , and the hammer 500 are built in the rod casing 800 .

Such crawler crane 700, auger 100, second shock absorber 200, rod 300, hammer 500, rod casing 800 is a technique generally used in the prior art, so detailed description will be omitted. .

As shown in FIG. 2 , the hammer 500 is coupled to the hammer body 510 operated by compressed air, the hammer housing 520 in which the hammer body 510 is built, and the hammer body 510 . It rises up and down and consists of a hammer bit 530 and the like that perforates the ground.

A screw blade 521 for hammer is provided on the outer peripheral surface of the hammer housing 520 .

A first shock absorber 400 is provided to block transmission of noise and vibration from the hammer 500 to the rod 300 and prevent dust scattering.

The first shock absorber 400 includes a first coupling pipe 410 , a second coupling pipe 420 , an external buffer packing 431 , an internal buffer packing 432 , a coupling ring 440 , a first cover ring 451 . ), a second cover ring 452 , a tube for housing 460 , a nozzle for water spraying 462 , a first water supply tube 470 , a flexible joint tube 480 , and the like.

The first coupling tube 410 is in the form of a tube extending in the vertical direction as shown in FIGS. 2, 4, and 6, and the upper end 411 is inserted into and coupled to the lower end of the rod 300, and is coupled in the vertical direction along the inside. A first compressed air passage 413 is formed, and a first packing support jaw 414 protruding outward in the radial direction is formed on the outer peripheral surface of the middle part in the vertical direction.

In order for the upper end 411 of the first coupling pipe 410 to be coupled to the lower end of the rod 300, the upper end 411 of the first coupling pipe 410 has a first pin insertion hole 411a extending in the horizontal direction. is formed, the first coupling pin 411b (see FIG. 2) is disposed while crossing the lower end of the rod 300 and the first pin insertion hole 411a in the horizontal direction, the first coupling tube 410 and the rod ( 300) is combined.

The upper end 421 of the second coupling pipe 420 is coupled to the lower end 412 of the first coupling pipe 410 so as to be swingable in the vertical direction.

The second coupling pipe 420 is in the form of a tube extending in the vertical direction as shown in FIGS. 2, 4, and 8, and the upper end of the hammer 500 is inserted into the lower end 422 and coupled thereto, and the upper end 421 is the second coupling tube 420. A second packing support jaw 423 is formed on the inner circumferential surface of the middle part in the vertical direction so as to be swingably coupled to the lower end of the first coupling pipe 410 in the vertical direction.

In order for the lower end 422 of the second coupling pipe 420 to be coupled to the upper end of the hammer 500, the lower end 422 of the second coupling pipe 420 has a second pin insertion hole 422a extending in the horizontal direction. is formed, the second coupling pin 422b (see FIG. 2 ) is fixed while being disposed while traversing the upper end of the hammer 500 and the second pin insertion hole 422a in the horizontal direction, and the second coupling pipe 420 and The hammer 500 is coupled.

In contrast, a structure in which the upper end 421 of the second coupling pipe 420 is coupled to the lower end 412 of the first coupling pipe 410 so as to be swingably coupled in the vertical direction will be described.

The inner circumferential surface of the upper end 421 of the second coupling pipe 420 has a hexagonal cross-sectional structure, and the outer circumferential cross-sectional structure of the lower end 412 of the first coupling tube 410 is the upper end 421 of the second coupling pipe 420 Since it has a hexagonal cross-sectional structure corresponding to the hexagonal cross-sectional structure of the inner circumferential surface of , the upper end 421 of the second coupling pipe 420 and the lower end 412 of the first coupling pipe 410 are spline-coupled to each other.

In the upper end portion 421 of the second coupling pipe 420, a second swing coupling pin insertion hole 421a for fixedly disposed while the swing coupling pin 421b crosses in the horizontal direction is formed while extending in the horizontal direction, In the lower end 412 of the first coupling pipe 410, the swing coupling pin 421b is horizontally crossed in response to the second swing coupling pin insertion hole 421a, and the first swinging to be arranged so as to be swingable in the vertical direction. The coupling pin insertion hole 412a is formed while extending in the horizontal direction.

The first swing coupling pin insertion hole 412a is formed to have a vertical length longer than that of the second swing coupling pin insertion hole 421a, and the swing coupling pin 421b is formed in the vertical direction in the first swing coupling pin insertion hole 412a. can be oscillated (see FIG. 4).

In this way, the upper end 421 of the second coupling pipe 420 is coupled to be swingable in the vertical direction with respect to the lower end 412 of the first coupling pipe 410 .

The outer buffer packing 431 is provided between the lower surface of the first packing support jaw 414 and the upper end 421 of the second coupling pipe 420 to prevent the outflow of compressed air while preventing the outflow of compressed air. It cushions the vibration between the two coupling tubes 420 and prevents noise.

The inner buffer packing 432 is provided between the upper surface of the second packing support jaw 423 and the lower end 412 of the first coupling pipe 410 to prevent the outflow of compressed air while preventing the outflow of compressed air. It cushions the vibration between the two coupling tubes 420 and prevents noise.

A coupling ring 440, a second cover ring 452, and a first cover ring 451 are provided on the outer circumferential surface of the second coupling pipe 420, and the coupling ring 440, the second cover ring 452, and the first cover ring 452 are provided. 1 A tube 460 for a housing is provided on the outside of the cover ring 451 .

The coupling ring 440 is provided horizontally to couple the upper end of the outer circumferential surface of the second coupling tube 420 and the upper end of the inner circumferential surface of the tube 460 for the housing.

The first cover ring 451 is provided horizontally between the lower end of the outer circumferential surface of the second coupling pipe 420 and the lower end of the inner circumferential surface of the housing tube 460 , and the second cover ring 452 is the second coupling pipe 420 . It is provided horizontally between the middle part of the outer peripheral surface of the inner peripheral surface of the tube 460 for the housing.

A space surrounded by the first cover ring 451 , the second cover ring 452 , the second coupling tube 420 , and the housing tube 460 forms a buffer chamber 461 for water injection.

A plurality of water injection nozzles 462 are provided in the portion constituting the water injection buffer chamber 461 of the housing tube 460 (the number is 6 in this embodiment, and the number may be changed in various ways). do.

Therefore, when water is supplied to the water injection buffer chamber 461 , water is sprayed to the outside through the water injection nozzle 462 provided in the housing tube 460 to remove dust scattered due to the excavation of the hammer 500 . can be removed

A first water supply pipe 470 is provided to supply water to the buffer chamber 461 for water injection.

The lower end of the first water supply pipe 470 passes through the second cover ring 452 to communicate with the buffer chamber 461 for water injection, and the upper end passes through the coupling ring 440 to protrude upward of the coupling ring 440 . It extends in the vertical direction between the second coupling pipe 420 and the housing pipe 460 so as to be.

Meanwhile, as the upper end of the hammer 500 is inserted into the lower end 422 of the second coupling pipe 420 , the upper end of the hammer 500 communicates with the first compressed air passage 413 of the first coupling pipe 410 and is compressed. are supplied with air.

A screw blade 463 for a first shock absorber is provided on the outer peripheral surface of the tube 460 for the housing.

A rod 300 is provided on the upper portion of the first shock absorber 400 as described above, and a water supply pipe 301 for a rod extending in the vertical direction and a compressed air passage for a rod extending in the vertical direction inside the rod 300 302 is provided (see FIG. 2).

In addition, the compressed air passage 302 for the rod is arranged to communicate with the first compressed air passage 413 of the first coupling tube 410, and the water supply tube 301 for the rod is the lower end of the water supply tube 301 for the rod. It is connected to the first water supply pipe 470 via an elastic joint pipe 480 provided between the and the upper end of the first water supply pipe 470 .

The flexible joint pipe 480 is made of synthetic rubber, etc., and even when the first water supply pipe 470 is vertically oscillated with respect to the rod 300, the water supply pipe 301 and the first water supply pipe 470 for the rod. can maintain a connection to

The rod 300 may have a form in which a plurality of rods 300 are connected in a line as shown in FIGS. 2 and 3 , and screw blades 303 for the rod are formed on the outer peripheral surface of the rod 300 .

2 and 3 , a second shock absorber 200 is provided between the upper end of the rod 300 and the auger 100 .

The second shock absorber 200 is provided to block the shock transmission from the rod 300 to the auger 100 .

The second shock absorber 200 includes an upper coupling pipe in which the upper end is coupled to the output shaft of the lower end of the auger 100, the lower end is coupled to the upper end of the rod 300, and the upper end is swingable in the vertical direction with respect to the upper coupling pipe A lower coupling pipe coupled to the upper coupling pipe and a buffer packing provided between the upper coupling pipe and the lower coupling pipe to cushion the impact.

Since the second shock absorber 200 is the same as a conventional shock absorber, a detailed description thereof is omitted, and a second compressed air passage 201 extending in the vertical direction is formed along the inside.

Meanwhile, between the upper end of the rod 300 and the auger 100 , a second water supply pipe 600 is provided to supply water from the auger 100 to the water supply pipe 301 for the rod 300 of the rod 300 .

The auger 100 is connected to an external compressed air supply source (not shown) and a water supply source (not shown), respectively.

The compressed air supplied to the auger 100 from the compressed air supply source is the second compressed air passage 201 of the second shock absorber 200, the compressed air passage 302 for the rod of the rod 300, and the first shock absorber 100. It is supplied to the hammer 500 through the first compressed air passage 413 of the hammer 500 to operate.

That is, the hammer 500 of this embodiment is an air operated hammer.

The water supplied to the auger 100 from the water supply source is the second water supply pipe 600 , the rod water supply pipe 301 of the rod 300 , the flexible joint pipe 480 , and the first water of the first shock absorber 100 . After being supplied to the buffer chamber 461 for water injection through the supply pipe 470, it is sprayed to the outside through a plurality of water injection nozzles 462 disposed in the housing tube 460, due to the excavation of the hammer 500. Prevents the generated dust from scattering.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

100 : Auger
200: second shock absorber 201: second compressed air passage
300: rod 301: water supply pipe for rod
302: compressed air passage for rod 303: screw blade for rod
400: first buffer
410: first coupling tube 411: upper part
411a: first pin insertion hole 411b: first coupling pin
412: lower part 412a: first swing coupling pin insertion hole
413: first compressed air passage 414: first packing support jaw
420: second coupling tube 421: upper part
421a: second swing coupling pin insertion hole 421b: swing coupling pin
422: lower part 422a: second pin insertion hole
422b: second coupling pin 423: second packing support jaw
431: packing for external buffering
432: packing for internal buffering
440: coupling ring
451: first cover ring 452: second cover ring
460: tube for housing 461: buffer chamber for water injection
462: water spray nozzle 463: screw wing for the first buffer
470: first water supply pipe
480: flexible joint tube
500: hammer 510: hammer body
520: hammer housing 521: screw blade for hammer
530: hammer bit
600: water supply pipe
700: crawler crane
710: post frame 711: guide
800: rod casing

Claims (1)

An auger, a rod provided under the auger, a hammer provided at the lower end of the rod and operated by compressed air, a first shock absorber provided between the hammer and the rod, and provided between the rod and the auger a second shock absorber;
The first shock absorber,
In the form of a tube extending in the vertical direction, the upper end is inserted and coupled to the lower end of the rod, and a first compressed air passage is formed along the inside in the vertical direction, and the first packing support jaw protrudes outward in the radial direction on the outer peripheral surface of the middle part in the vertical direction. The formed first coupling tube,
In the form of a tube extending in the vertical direction, the upper end of the hammer is inserted and coupled to the lower end, the upper end is pivotably coupled to the lower end of the first coupling tube in the vertical direction, and a second packing support jaw is formed on the inner circumferential surface of the upper and lower middle portion a second coupling tube;
An external cushioning packing provided between the lower surface of the first packing support jaw and the upper end of the second coupling pipe;
an internal buffering packing provided between the upper surface of the second packing support jaw and the lower end of the first coupling pipe;
a coupling ring provided horizontally along the upper end of the outer circumferential surface of the second coupling pipe;
a first cover ring provided horizontally along the lower end of the outer circumferential surface of the second coupling tube;
a second cover ring provided horizontally along the middle portion of the outer circumferential surface of the second coupling tube;
A tube for a housing having an inner circumferential surface coupled to the coupling ring, the first cover ring, and the second cover ring, and forming a water injection buffer chamber together with the first cover ring, the second cover ring, and the second coupling pipe class,
A plurality of nozzles for water injection provided in a portion constituting the buffer chamber for water injection of the tube for the housing;
a lower end portion passing through the second cover ring to communicate with the buffer chamber for water injection and a first water supply pipe having an upper end portion penetrating the coupling ring and protruding above the coupling ring;
The rod includes a water supply pipe for the rod extending in the vertical direction and a compressed air passage for the rod extending in the vertical direction;
The second shock absorber is formed with a second compressed air passage extending in the vertical direction along the inside;
a second water supply pipe provided between the upper end of the rod and the auger to supply water from the auger to the water supply pipe for the rod of the rod;
an elastic joint pipe is provided between the lower end of the water supply pipe for the rod and the upper end of the first water supply pipe between the first shock absorber and the rod;
Ground excavation device using a hammer to prevent noise, vibration and dust scattering, characterized in that.

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