KR101644473B1 - Hitting device having boosting device for increasing efficiency - Google Patents

Hitting device having boosting device for increasing efficiency Download PDF

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Publication number
KR101644473B1
KR101644473B1 KR1020140130193A KR20140130193A KR101644473B1 KR 101644473 B1 KR101644473 B1 KR 101644473B1 KR 1020140130193 A KR1020140130193 A KR 1020140130193A KR 20140130193 A KR20140130193 A KR 20140130193A KR 101644473 B1 KR101644473 B1 KR 101644473B1
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KR
South Korea
Prior art keywords
boosting
cylinder
piston
striking
boosting cylinder
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KR1020140130193A
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Korean (ko)
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KR20160037521A (en
Inventor
서경순
Original Assignee
서경순
이규봉
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Priority to KR1020140130193A priority Critical patent/KR101644473B1/en
Priority to PCT/KR2015/010181 priority patent/WO2016052943A1/en
Publication of KR20160037521A publication Critical patent/KR20160037521A/en
Application granted granted Critical
Publication of KR101644473B1 publication Critical patent/KR101644473B1/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The present invention relates to a striking device having a boosting device capable of increasing a striking amount and capable of increasing the efficiency of a striking device, the striking device comprising: a main body having a main gas chamber; And a boosting piston having an outer diameter corresponding to an inner diameter of the boosting cylinder and movably installed in the boosting cylinder to increase the impact efficiency by pushing the fluid to the body, Of the striking device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hitting device having a boosting device for improving a hitting efficiency,

The present invention relates to a striking device, and more particularly, to a striking device having a boosting device capable of increasing the efficiency of a striking device such as a breaker.

Generally, the striking device is a device for crushing concrete or rock, etc. Hereinafter, a hydraulic breaker, which is a type of striking device, will be described as an example thereof.

For example, the hydraulic breaker is filled with a compressible gas such as nitrogen gas by being injected into the gas chamber formed at the upper end of the piston in the main body, and the head of the chisel is mounted coaxially so as to be in contact with the piston at the lower end of the piston, The expansion state of the nitrogen gas in the gas chamber is converted into hammering energy that hits the head of the chisel through the piston, Such as a rock, concrete or the like, which is in contact with the ground.

SUMMARY OF THE INVENTION The present invention provides a striking device having a boosting device for improving striking efficiency to solve various problems. However, these problems are exemplary and do not limit the scope of the present invention.

According to an embodiment of the present invention, there is provided a boosing cylinder comprising: a main body having a main gas chamber; a boosting cylinder having a boosting gas chamber and connected to the main body and having an opening through which the fluid flows in and out; There is provided a striking device having a boosting device that improves striking efficiency, including a boosting piston movably installed in a cylinder to push fluid to the main body to improve striking efficiency.

And a sealing member provided between the boosting cylinder and the boosting piston to seal the boosting cylinder and the boosting piston.

And a buffer member provided in a moving direction of the boosting piston.

And a volume changing member provided in the boosting gas chamber to vary the volume of the boosting gas chamber.

The volume changing member may include a volume changing plate that is screwed to the boosting cylinder or the boosting piston and adjusts the position thereof to vary the volume.

The volume changing member may include a volumetric damper having a variable volume and provided in the boosting gas chamber to vary the booster gas chamber.

The boosting cylinder may include a first boosting cylinder and a second boosting cylinder.

The volume of the second boosting cylinder may be smaller than that of the first boosting cylinder.

The second boosting cylinder may be symmetrical with respect to the first boosting cylinder.

By controlling the gas pressure of the second boosting cylinder, the moving distance of the boosting piston can be controlled.

And a connection tube connecting the opening and the main body.

According to the embodiment of the present invention as described above, it is possible to implement a striking device having a boosting device capable of increasing the striking amount and increasing the efficiency of the striking device. Of course, the scope of the present invention is not limited by these effects.

1 is a front sectional view schematically showing a hydraulic breaker among general striking devices.
2 is a front sectional view schematically showing a striking device having a boosting device for improving striking efficiency according to an embodiment of the present invention.
3 is a front cross-sectional view schematically showing a boosting device of a striking device having a boosting device for improving striking efficiency according to an embodiment of the present invention.
4 is a front sectional view schematically showing a part of a striking device having a boosting device for improving striking efficiency according to another embodiment of the present invention.
5 is a front sectional view schematically showing a part of a striking device having a boosting device for improving striking efficiency according to another embodiment of the present invention.
6 is a front sectional view schematically showing a boosting device of a striking device having a boosting device for improving striking efficiency according to another embodiment of the present invention.
7 is a front sectional view schematically showing a boosting device of a striking device having a boosting device for improving striking efficiency according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, Is provided to fully inform the user. Also, for convenience of explanation, the components may be exaggerated or reduced in size.

Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

2 is a front sectional view schematically showing a striking device having a boosting device 50 for improving striking efficiency according to an embodiment of the present invention. According to the present embodiment, the striking device may include the main body 10 and the boosting device 50. Hereinafter, the striking device will be described by taking the hydraulic breaker as an example, but the present invention is not limited thereto.

The striking device may include, for example, a hydraulic breaker, a main body 10, a main piston 20, a control valve 41 and a boosting device 50.

The body 10 may include a gas chamber. A compression gas such as nitrogen gas is injected into the main gas chamber 11 of the main body 10 formed at the upper end of the main piston 20 and the head of the chisel 30 is inserted into the main piston 20 And the pressure of the fluid supplied in this state is switched by the control valve 41 provided in the valve chamber VR to move up and down the main piston 20. At this time, The expansion force of the nitrogen gas in the gas chamber 11 is converted into hammering energy that hits the head of the chisel 30 through the main piston 20 and the hard rocking object such as rock, And may be configured to fracture.

The boosting device 50 may be coupled to one side of the main body 10 and may be coupled to the upper end of the main body 10, for example. And the fluid can flow through the booster device 50 and the body 10. Specifically, the boosting device 50 may be provided on a hydraulic pressure supply line 12 constituted by a hydraulic breaker as a striking device or a conventional hydraulic device. That is, a flow path for connecting the boosting device 50, the control valve 41, and the main body 10 in order can be formed. With this arrangement, the striking device can adjust the striking efficiency, which is increased by the boosting device 50 via the control valve 41. However, the present invention is not limited thereto. Hereinafter, the boosting device 50 will be described in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, and the booster device 50 may be spaced apart from the main body 10 as described later.

3 is a front sectional view schematically showing the boosting device 50 according to the present embodiment. The boosting apparatus 50 according to the present embodiment may include a boosting cylinder 510 and a boosting piston 520 movably installed inside the boosting cylinder 510. [

The boosting cylinder 510 is coupled to one side of the main body 10 and may have a boosting gas chamber 511. Specifically, the boosting gas chamber 511 is located inside the boosting cylinder 510, and may be formed by the boosting cylinder 510 and the boosting piston 520. The booster cylinder 510 may have an opening 512 connected to the body 10 to allow the fluid to flow in and out. And the boosting cylinder 510 may have a boosting hydraulic chamber 514 connected to the opening 512.

Specifically, the boosting cylinder 510 can form a boosting gas chamber 511 in which a nitrogen gas or the like is filled together with an end surface of the boosting piston 520, which will be described later. The boosting cylinder 510 may form a booster hydraulic chamber 514 in which the hydraulic oil acting on the main piston 20 is introduced and removed together with the other end surface of the boosting piston 520.

Accordingly, as the volume of the boosting gas chamber 511 becomes smaller as the boosting piston 520 moves, the volume of the boosting hydraulic chamber 514 can be increased. The opposite is also possible.

Such a boosting cylinder 510 may be formed in a cylindrical shape having, for example, an opening 512 on one side thereof. Such a boosting cylinder 510 may be formed by a cylindrical cover, or may be formed by a cylindrical cover and a part of the main body 10, for example.

The boosting cylinder 510 may also be coupled with a supply valve 580 that supplies gas to the boosting gas chamber 511.

The boosting piston 520 has an outer diameter corresponding to the inner diameter of the boosting cylinder 510 and can be movably installed in the boosting cylinder 510. For example, the boosting piston 520 may be formed in a cylindrical shape having an outer diameter corresponding to the inner diameter of the boosting cylinder 510. That is, the boosting piston 520 may have a shape corresponding to the internal shape of the boosting cylinder 510.

Accordingly, the boosting piston 520 is movably provided in the boosting cylinder 510 with its outer diameter in contact with the inner diameter of the boosting cylinder 510, and the opening 512 of the boosting cylinder 510 is connected to the inlet / And may be installed in communication with the control valve 41.

And the boost piston 520 can push the fluid to the body to improve striking efficiency.

Hereinafter, the shape of the boosting piston 520 will be described in more detail.

The boosting piston 520 may include a release preventing jaw 521 formed to protrude from the end portion. For example, the separation preventing jaw 521 may protrude substantially perpendicular to the moving direction of the boosting piston 520. The boosting cylinder 510 may include a protrusion 513 protruding inwardly to catch the release preventing chuck.

Therefore, the boosting piston 520 moving in the boosting cylinder 510 can prevent the departure preventing jaw 521 from being separated from the boosting cylinder 510 by catching the projecting portion 513. The protrusion 513 and the separation preventing jaw 521 may be formed as one ring on the inner surface of the boosting cylinder 510 and on the outer surface of the boosting piston 520, have.

Meanwhile, the booster piston 520 may be formed in a cylindrical shape as shown in FIG. As shown in FIG. 4, the booster piston 520 may be formed with a groove so that nitrogen gas can sufficiently act on one end surface thereof facing the gas chamber, so that the volume of the gas chamber is reduced to the inside of the booster piston 520 Can be maximized.

When the hydraulic pressure is supplied to the main body 10 of the hydraulic breaker and the main piston 20 is lowered, as shown in FIG. 3A, the gas chamber into which the nitrogen gas is introduced is expanded so that the separation preventing boss 521 of the boosting piston 520 The boosting piston 520 is quickly pushed toward the opening 512 of the boosting cylinder 510 until it is caught by the projection 513 of the boosting cylinder 510 so that all of the hydraulic oil filled in the booster hydraulic chamber 514 It is possible to maximize the descending speed of the main pistons 20 and 30 to improve the striking efficiency.

3B, a part of the hydraulic fluid supplied to the main body 10 of the hydraulic breaker is supplied to the opening 512 of the boosting cylinder 510 through the control valve 41. At this time, The boosting piston 520 is inserted into the boosting cylinder 510 and the boosting gas chamber 511 is compressed by the inserted boosting piston 520 to reduce impact force and vibration.

In particular, the boosting device 50 according to this embodiment operates as described above, and can transmit the expansion pressure of the boosting gas chamber 511 to the boosting oil pressure chamber 514 directly through the boosting piston 520, 514 to the boosting gas chamber 511 as a result of which the operating oil can be quickly moved in and out to improve the response speed of the boosting device 50. As a result, the descending speed of the main piston 20 is improved, 20 can be increased.

The boosting cylinder 510 and the boosting piston 520 are provided between the boosting cylinder 510 and the boosting piston 520 to prevent mixing of the nitrogen gas flowing into the boosting gas chamber 511 and the boosting hydraulic pressure chamber 514, And a sealing member 530 for sealing the booster piston 520. The sealing member 530 may be coupled to the outer surface of the boosting piston 520 or may be coupled to the boosting cylinder 510 as shown. Of course, the sealing member 510 may be coupled to the boosting cylinder 510 and the boosting piston 520, respectively. The sealing member 530 may be variously formed by sealing, o-ring, packing, or the like.

The boosting device 50 may further include a buffer member 540 provided in the moving direction of the boosting piston 520. As the boosting piston 520 moves, it may collide against the inner wall of the boosting cylinder 510 or the main body 10 to generate noise or breakage. To prevent this, the shock absorbing member 540 may be provided between the boosting cylinder 510 and the boosting piston 520 or between the body 10 and the boosting piston 520, or between the boosting cylinder 510 and the boosting piston 520 And between the main body 10 and the boosting piston 520. As shown in FIG.

For example, the cushioning member 540 may be coupled to the boosting piston 520, and specifically to both end faces of the boosting piston 520 in the direction of movement. The buffer member 540 may be made of various materials such as Teflon coating and rubber.

4 to 5 are front sectional views schematically showing a boosting piston 520 of a striking device having a boosting device 50 for improving striking efficiency according to another embodiment of the present invention. Since the striking device according to the present embodiment is the same as or similar to the striking device according to the above-described embodiment, a duplicate description will be omitted.

The striking device having the boosting device 50 for improving the striking efficiency according to the present embodiment may include a volume changing member provided in the gas space to vary the volume of the gas space.

The volume changing member may include a volume changing plate 551 that is screwed to the boosting cylinder 510 or the boosting piston 520 and adjusts its position to vary the volume, as shown in FIG.

The volume change plate 551 is provided with two plates so that the upper plate and the lower plate are in surface contact with each other to function as a normal lock nut, thereby preventing arbitrary loosening of the volume change plate 551 So that it can withstand a large gas pressure acting on the boosting gas chamber 511.

The plurality of volume changing plates 551 may be separately screwed into the booster piston 520 as shown in FIG. 4A, or a plurality of volume changing plates 551 may be provided as shown in FIG. 4B So that the volume of the boosting gas chamber 511 can be changed by adjusting the position of the screw.

Alternatively, the volume change member may include a volume change damper 552 provided in the boosting gas chamber 511 to vary the volume of the boosting gas chamber 511, as shown in FIG. 5, . For example, the volume change damper 552 may be inserted into the interior of the boosting piston 520 and may be provided with a plurality of volumes having various sizes of volumes.

5A, the volume changing damper 552 may be engaged and fixed to the inner lower end of the boosting piston 520 as a protrusion and groove structure or a step structure, or may be fixed to the boosting piston 520 as shown in FIG. 5B, (Press-fitting) into the inside of the case.

The volume changing member according to the above-described embodiments can adjust the striking efficiency of the boosting piston 520 by changing the volume of the boosting gas chamber 511.

6 is a front sectional view schematically showing a part of a striking device having a boosting device 50 for improving striking efficiency according to another embodiment of the present invention. Since the striking device according to the present embodiment is the same as or similar to the striking device according to the above-described embodiment, a duplicate description will be omitted.

The striking device according to the present embodiment may include at least two boosting cylinders 510. Thus, even if the sealing member 530 of one of the boosting cylinders 510 is broken, the boosting cylinder 510 can improve the striking efficiency by the other boosting cylinders 510.

Alternatively, the moving distance of the boosting piston 520 may be adjusted by adjusting the gas pressure of a boosting cylinder 510. As a result, the impact efficiency can be easily changed.

Hereinafter, the first boosting cylinder 560 and the second boosting cylinder 570 will be described, but the number of the boosting cylinders 510 is not limited thereto. The first boosting cylinder 560 includes a first boosting gas chamber 561 and the second boosting cylinder 570 may include a second boosting gas chamber 571.

At this time, the boosting piston 520 may be coupled to the first boosting cylinder 560 and the second boosting cylinder 570, respectively.

On the other hand, the volume of the second boosting cylinder 570 may be smaller than that of the first boosting cylinder 560. Therefore, the blowing efficiency can be precisely changed by adjusting the gas pressure of the second boosting cylinder 570 having a relatively small volume.

The arrangement of the boosting cylinder 510 will be described. The second boosting cylinder 570 can be symmetrical with respect to the first boosting cylinder 560. For example, the second boosting cylinder 570 may surround the first boosting cylinder 560 centrally disposed in a ring shape. As another example, the second boosting cylinder 570 may be a plurality of cylinders, and may be disposed at an equal angle with respect to the first boosting cylinder 560 at the center. This allows the boosting piston 520 to be uniformly pressurized or dispense, minimizing noise and vibration.

Meanwhile, FIG. 7 is a front sectional view schematically showing a striking device having a boosting device 50 for improving striking efficiency according to another embodiment of the present invention. The striking device having the boosting device 50 for improving the striking efficiency according to the present embodiment is the same as or similar to the striking device having the boosting device 50 for improving the striking efficiency according to the above-described embodiment. Therefore, redundant description will be omitted.

The boosting device 50 is not provided in the main body 10 but may be provided separately. For example, as shown, a connecting tube 99 may be provided for connecting the booster device 50 to the main body. Specifically, the connecting tube 99 can connect the opening 512 of the boosting cylinder 510 and the hydraulic supply line 12 of the main body 10.

Therefore, since the booster device 50 is not installed in the main body 10, the weight of the main body 10 can be reduced, and the striking operation can be facilitated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

Therefore, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

10: main body 11: main gas chamber
20: main piston 30: chisel
VR: valve chamber 41: control valve
50: boosting device 510: boosting cylinder
511: boosting gas chamber 512: opening
513: protrusion 514: booster hydraulic chamber
520: boosting piston 521:
530: sealing member 540: buffer member
551: Volume change 552: Volume change damper
560: first boosting cylinder 561: first boosting gas chamber
570: 2nd boosting cylinder 571: 2nd boosting gas chamber
580: Supply valve

Claims (11)

delete delete delete delete delete delete A main body having a main gas chamber; A boosting cylinder having a boosting gas chamber and connected to the main body and having an opening through which the fluid flows; And a boosting piston having an outer diameter corresponding to an inner diameter of the boosting cylinder and movably installed in the boosting cylinder to push the fluid to the body to improve impact efficiency. In this case,
Wherein the boosting cylinder comprises a first boosting cylinder and a second boosting cylinder. 8. The method of claim 7,
Wherein the second boosting cylinder has a volume smaller than the first boosting cylinder and has a boosting device for improving the striking efficiency. 8. The method of claim 7,
Wherein the second boosting cylinder is symmetrical with respect to the first boosting cylinder and has a boosting device for improving impact efficiency. 8. The method of claim 7,
And adjusting the gas pressure of the second boosting cylinder to adjust the moving distance of the boosting piston. delete
KR1020140130193A 2014-09-29 2014-09-29 Hitting device having boosting device for increasing efficiency KR101644473B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020140130193A KR101644473B1 (en) 2014-09-29 2014-09-29 Hitting device having boosting device for increasing efficiency
PCT/KR2015/010181 WO2016052943A1 (en) 2014-09-29 2015-09-25 Striking apparatus having boosting device for improving striking efficiency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140130193A KR101644473B1 (en) 2014-09-29 2014-09-29 Hitting device having boosting device for increasing efficiency

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KR20160037521A KR20160037521A (en) 2016-04-06
KR101644473B1 true KR101644473B1 (en) 2016-08-01

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WO (1) WO2016052943A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109113063B (en) * 2018-10-19 2024-02-20 广东力源液压机械有限公司 Buffering control method and device for drill rod of pile hammer body

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100524671B1 (en) * 1998-12-31 2005-12-21 두산인프라코어 주식회사 Breaker
KR100868371B1 (en) * 2007-02-07 2008-11-12 코막중공업 주식회사 Mini loader buffering cylinder
JP2009228724A (en) * 2008-03-21 2009-10-08 Kayaba Ind Co Ltd Shock absorber
JP2013036592A (en) * 2011-08-11 2013-02-21 Kyb Co Ltd Shock absorber

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065824A (en) * 1989-12-28 1991-11-19 Esco Corporation Hydraulically powered repetitive impact hammer
JP3854540B2 (en) * 2002-05-29 2006-12-06 新キャタピラー三菱株式会社 Cylinder device and crawler type vehicle
KR101420696B1 (en) * 2012-01-25 2014-07-22 상진옥 Crushing blow You work excavators to boost pressure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100524671B1 (en) * 1998-12-31 2005-12-21 두산인프라코어 주식회사 Breaker
KR100868371B1 (en) * 2007-02-07 2008-11-12 코막중공업 주식회사 Mini loader buffering cylinder
JP2009228724A (en) * 2008-03-21 2009-10-08 Kayaba Ind Co Ltd Shock absorber
JP2013036592A (en) * 2011-08-11 2013-02-21 Kyb Co Ltd Shock absorber

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KR20160037521A (en) 2016-04-06
WO2016052943A1 (en) 2016-04-07

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