KR101679150B1 - Device for holding the position of pin - Google Patents

Device for holding the position of pin Download PDF

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Publication number
KR101679150B1
KR101679150B1 KR1020150126971A KR20150126971A KR101679150B1 KR 101679150 B1 KR101679150 B1 KR 101679150B1 KR 1020150126971 A KR1020150126971 A KR 1020150126971A KR 20150126971 A KR20150126971 A KR 20150126971A KR 101679150 B1 KR101679150 B1 KR 101679150B1
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KR
South Korea
Prior art keywords
fixing
hole
pin
concave groove
support
Prior art date
Application number
KR1020150126971A
Other languages
Korean (ko)
Inventor
정광일
Original Assignee
주식회사 에이와이중공업
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Publication date
Application filed by 주식회사 에이와이중공업 filed Critical 주식회사 에이와이중공업
Priority to KR1020150126971A priority Critical patent/KR101679150B1/en
Application granted granted Critical
Publication of KR101679150B1 publication Critical patent/KR101679150B1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E02F5/305—Arrangements for breaking-up hard ground
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/72—Stone, rock or concrete

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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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The present invention relates to a stopper member for a supporting pin of a hydraulic breaker, to form the whole fixing piece of a fixed part inserted into a concave groove in a circular shape in order to be closely adhered on the whole surface of the concave groove formed on a support and exhibit fixing force, and equally divide the fixing piece into three parts, so as to exhibit fixing force enough to vibration or impact of a supporting pin inserted into the support. To this end, a stopper member for a supporting pin of a hydraulic breaker, to insert the supporting pin for supporting a stroke transfer distance of a hammer into a through-hole of a support and fix the supporting pin in a concave groove formed in one end of the through-hole, so as to prevent arbitrary separation of the supporting pin, comprises: a fixing part (510) inserted into the through-hole (17) and locking one end in the concave groove (13) to exhibit fixing force; and a buffer part (520) formed in one end of the fixing part (510) and being closely attached to one end of the supporting pin (15). The fixing part (510) includes a fixing piece (512) equally divided at predetermined intervals while totally forming a circular shape and having an insertion hole (514) formed in each divided fixing part to receive one end of a tool, so as to be closely attached on the whole surface of the concave groove (13) and thereby increasing the fixing force.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a stop member for a support pin of a hydraulic breaker hammer,

The present invention relates to a stopper for a support pin of a hydraulic breaker hammer, and more particularly, to a stopper for a support pin of a hydraulic breaker hammer, in which a fixing part of a fixing part, which is inserted into the recessed groove, And a stopper for a support pin of a hydraulic breaker hammer which is capable of exerting a sufficient fixing force against the vibration or impact of the support pin inserted into the support stand by dividing the fixture into three equally spaced portions.

Generally, a hydraulic breaker is a device for crushing hard concrete or rock by using the hydraulic force generated by rotating the hydraulic pump by the force of the engine.

1, a hammer 103 is inserted into a support 102 by a plurality of fastening members, and the hammer 103 includes a plurality of support pins 101, Is supported by a stop means (105). In this case, the hammer 103 is accompanied by a large vibration due to the working characteristics, and the engagement of the pin 101 is released. Accordingly, the pin 101 is fixed by the stop means 105, but the stop means 105 is also gradually released by the vibration, so that the coupling of the pin 101 can not be maintained. Here, stop means 105 is used in which rubber is inserted into the end of the pin 101, and the rubber is inserted by using a stop ring and a bolt.

Also, in another embodiment of the stop means, as shown in Figure 2, a stop ring of KS B 1336-85 has been used to prevent pin release. The stop ring 200 has a substantially circular shape and is partially cut. When the stop ring 200 is inwardly closed, the stop ring 200 has elasticity due to the rigidity of the ring member, so that the stop ring 200 can maintain its position.

However, the stop ring 200 has a constant thickness. That is, if the thickness is too large, it is difficult to form a circular shape at the time of manufacturing, and since the thickness is not sufficiently large, a groove formed in the pin insertion hole can not be formed deeply.

Thus, the pin 202 is inserted into the insertion hole 201, the rubber 204 is inserted thereon again, and the rubber 204 is fixed by the stop ring 200.

However, when the pin 202 is subjected to repetitive motion, a repetitive force is applied to the stop ring 200 via the rubber 204, which eventually causes the stop ring 200 to retract However, if the stop ring 200 does not function, the pin 202 is disengaged and the engagement of the member is broken.

Another embodiment of the stop means uses a spring pin according to the standard of KS B 1339-85, as shown in Fig. 3, and is a structure that uses a steel sheet that includes elasticity itself. The spring pin 300 is configured to be contracted by a predetermined amount in the radial direction, and the spring pin 300 is inserted and fixed in the through hole in an interference fit manner.

However, when a certain period of time passes after a lot of vibrations are involved or a pin joint where many movements of members are present, the elasticity is gradually lost, or the pin is pushed out and the pin can not be supported.

Another embodiment of the stop means is characterized in that, as shown in Figs. 4 and 5, a through hole through which a pin is inserted is formed in at least two members, and a circular concave groove is formed inside the through hole at the outlet side And a pin fixing device for use in a pin joining structure for connecting the members by inserting a pin into the through hole, the pin fixing device comprising: a pair of fixing portions formed on the outer surface of the fixing portion and formed of an inelastic member; And a lower elastic body formed in the lower portion of the fixing portion and the elastic body in the same shape as the end surface of the pin, wherein the lower elastic body is in contact with the pin and inserted into the through hole by the elastic force of the elastic body The projecting portion of the fixing portion is inserted into the recessed groove of the through hole so that the pin is fixed so as not to be separated by the movement of the members.

The stop member is inserted into the end of the pin (15) inserted in the through hole (17). The through hole 17 is formed with a concave groove for inserting the protrusion of the stopper member and is inserted into the through hole 17 using a tool such as a plier to fit the protrusion 7 into the concave groove. Therefore, when the projections 7 fit into the recessed grooves 13, the pliers are removed and the projections 7 fit into the recessed grooves 13 by the elasticity of the elastic body 5.

4, the protruding portion 7, which is inserted into the concave groove 13 of the support member and exerts a clamping force, is formed in a rectangular shape instead of a complete circular shape, so that the protruding portion 7 And the recessed groove 13 is limited by the shape of the projecting portion 7 so that the fixing force is limited so that the detachment of the retaining member from the recessed groove 13 of the support base is facilitated by the frequent vibration There is a problem.

That is, the stopper member must be inserted into the concave groove 13 by inserting a tool such as a pliers into the groove 9 formed in the protruded portion 7 to be divided and then the divided protruded portions 7 are mutually folded. When the protrusion 7 is formed in a completely circular shape, a space for retracting the protrusion 7 can not be formed, so that the stopper member itself can not be inserted into the recessed groove 13, The protruding portion 7 has to be formed in a rectangular shape.

Korean Patent Publication No. 413385 (published on Mar. 1, 2004) Korean Patent Publication No. 1072069 (issued October 10, 2011)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fixing member of a fixing part inserted into a concave groove so as to be in close contact with an entire surface of a concave groove formed in a support, And a stopper for a support pin of a hydraulic breaker hammer which is capable of exerting a sufficient fixing force against the vibration or impact of the support pin inserted into the support base by dividing the fixture into three equally spaced portions.

According to an aspect of the present invention, there is provided a hammering apparatus including a support pin for supporting a hammer stroke distance, the support pin being inserted into a through hole of a support base and fixed to a concave groove formed at one end of the through hole, A retaining member for a support pin of a hydraulic breaker hammer, the retaining member comprising: a fixing portion inserted into the through hole and having one end engaged with the recessed groove to exert a fixing force; And a cushioning portion which is formed at one end of the fixing portion and is in close contact with one end of the supporting pin; The fixing part has a circular shape and is formed at regular intervals and is equally spaced. An insertion hole is formed in each of the divided parts so that one end of the tool can be inserted. And a fixing piece for facilitating the fixing and amplifying the fixing force.

In the present invention, it is preferable that the fixing piece is constituted by three parts having equal intervals of 120 DEG.

In the present invention, it is preferable that the cushioning portion includes a cutting groove formed at a predetermined depth in the interval between the plurality of fixing pieces, so that neighboring fixing pieces are smoothly fastened to each other.

According to the present invention, the fixing piece of the fixing part inserted into the concave groove is formed in a circular shape as a whole so that the fixing piece can be brought into close contact with the entire surface of the concave groove formed in the support base, It is possible to exert a sufficient fixing force against vibration or impact of the support pin inserted into the support.

1 is an exploded perspective view of a conventional hydraulic breaker for an excavator;
2 is a cross-sectional view showing a conventional stopper for a support pin using a pin.
3 is a cross-sectional view showing a conventional stopper for a support pin as a spring.
4 is a perspective view of a holding member for a support pin showing a conventional example.
Fig. 5 is an engaging state sectional view of the stop member of Fig. 4; Fig.
6 is a perspective view of a stop member according to the present invention;
7 is a cross-sectional view of the stopper according to the present invention,
7a is a state in which the stop member is tightened, and 7b is a state in which the stop member is returned.
FIG. 8 is a plan view of the coupled state of the stopper member according to the present invention,
8a is a state in which the stop member is tightened, and 8b is a state in which the stop member is returned.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings (the same reference numerals are used for the same components as the conventional ones, and a detailed description thereof will be omitted).

The stop member 500 of the present invention includes a fixing portion 510 and a buffer portion 520 formed below the fixing portion 510 as shown in FIGS.

The fixing portion 510 is a means for engaging with the concave groove 13 of the through hole 17 to exert a fixing force.

The fixing part 510 includes a plurality of fixing pieces 512 having a plurality of equally spaced intervals. In this case, it is preferable that the plurality of fixing pieces 512 are formed in three sections.

The fixing piece 512 is formed of a material having a certain strength so as to exhibit a fixing force for preventing detachment from vibration or impact transmitted through the support pin 15 inserted into the concave groove 13 of the through hole 17 do. For example, the fixing piece 512 is formed of a metal material.

The spacing of the plurality of fixing pieces 512 may be such that the adjacent fixing pieces 512 can be easily separated or inserted through the through holes 17 when they are mutually fastened.

Each of the plurality of fixing pieces 512 includes an insertion hole 514 through which one end of the tool is inserted so that neighboring fixing pieces 512 can be tightened together.

The insertion hole 514 can be formed to have a predetermined depth or penetration, and can be used as long as the one end of the tool is inserted so that the neighboring fixing piece 514 can be easily fastened together .

The buffering part 520 extends downward from the fixing part 510 and is fixed to the through hole 17 so that one end of the buffering part 520 is in close contact with the support pin 15, So that the fixing force of the stop member 500 is increased.

The buffer part 520 is preferably formed of a synthetic resin such as rubber or silicon excellent in vibration absorption. Of course, the present invention is not limited thereto, and any material can be used as long as it can absorb the vibration of the support pin 15 easily.

It is preferable that the buffering part 520 is formed integrally with one end of the fixing part 510 through insert injection. Of course, the present invention is not limited thereto, and any structure can be used as long as it can stably maintain the fixed state in the fixing portion 510.

In addition, the buffer part 520 includes a cutout groove 522 having a predetermined depth and a predetermined width between a plurality of fixing pieces 512 that are spaced apart from each other by a predetermined distance.

The cutout groove 522 forms a clearance space so that tightening can be smoothly performed when the adjacent fixing pieces 512 are fastened together by the tool.

The state of use of the stopper for the support pin of the hydraulic breaker hammer configured as described above will be described below.

First, the stop member 500 is inserted to support the support pin 15 inserted into the through hole 17.

This is because when one end of the tool is inserted into the insertion hole 514 formed in the adjacent fixing piece 512 of the plurality of fixing pieces 512 and then the tool is pressed, .

When the stop member 500 is pushed into the through hole 17, the buffer part 520 of the stop member 500 having a diameter similar to that of the through hole 17 is inserted without fail.

Then, the fixing portion 510 of the stopper 500 is inserted into the through hole 17 as the diameter of the plurality of fixing pieces 512 tightened by the tool is shortened. Also, since the other fastening piece 512 which is not fastened can be freely shortened as much as the spacing space, the fixing part 510 is inserted into the through hole 17 by the forced insertion of the operator.

When the fixing portion 510 is positioned in the recessed groove 13 of the through hole 17 by releasing the clamping force of the tool, a plurality of the fixing portions 510 The fastening pieces 512 of the fastening portions 512 are restored to be engaged with the concave groove 13.

Therefore, the fixing portion 510 of the stopper 500 hooked on the recessed groove 13 of the through hole 17 is formed in a complete circle so as to be retained in the recessed groove 13, Even if the vibration or impact of the stopper member 500 is transmitted to the stopper member 500, the stopper member 520 can absorb shock by the buffer member 520 and the clamping force can be amplified by the fixing unit 510, 500).

On the other hand, when the retaining member 500 is to be detached from the through-hole 17 for maintenance such as replacement of the retaining member 500 by long-term use, the method is performed in the reverse order of the inserting method.

That is, when one end of the tool is inserted into the insertion hole 514 formed in each of the adjacent fastening pieces 512, and the fastening is performed after the fastening is performed, the stopping member 500 is easily detached from the through hole 17, .

One end of the tool is inserted into the insertion hole 514 formed in each of the three fixing pieces 512. In this case, The tool is simultaneously inserted into the three insertion holes 514 to be tightened to each other, thereby facilitating the tightening and facilitating the insertion into the through hole 17.

Accordingly, the stopper 500 facilitates easy maintenance and maintenance of the stopper 500 by facilitating smooth insertion and removal of the stopper 500 into the through-hole 17.

The above description is only one embodiment for implementing the stopper for the support pin of the hydraulic breaker hammer, and the present invention is not limited to the above embodiment. It will be understood by those skilled in the art that various changes may be made without departing from the spirit of the invention.

500: stop member 510:
512: Fixing piece 514: Insertion hole
520: buffer portion 522: incision groove

Claims (3)

A support pin for supporting a hammer stroke transfer distance is inserted into a through hole of a support and is fixed to a concave groove formed at one end of the through hole so as to prevent any disengagement of the support pin, As a result,
A fixing part 510 inserted into the through hole 17 and having one end engaged with the concave groove 13 to exert a fixing force; And
And a cushioning part 520 formed at one end of the fixing part 510 and closely attached to one end of the supporting pin 15;
The fixing part 510 has a circular shape and is formed at regular intervals and is equally spaced. An insertion hole 514 is formed so that one end of the tool can be inserted into each of the divided parts, A fixing piece 512 for facilitating insertion and removal and amplifying a clamping force while being in close contact with the clamping piece 512;
And a stopper for a support pin of the hydraulic breaker hammer.
[4] The apparatus according to claim 1, wherein the fixing piece (512)
Three divisions with equal intervals of 120 [deg.];
And a stopper for a support pin of the hydraulic breaker hammer.
The buffer unit (520) according to claim 1 or 2,
A cutting groove 522 formed at a predetermined depth in the space between the plurality of fixing pieces 512 so that adjacent fixing pieces 512 are smoothly fastened to each other;
And a stopper for a support pin of the hydraulic breaker hammer.
KR1020150126971A 2015-09-08 2015-09-08 Device for holding the position of pin KR101679150B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150126971A KR101679150B1 (en) 2015-09-08 2015-09-08 Device for holding the position of pin

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Application Number Priority Date Filing Date Title
KR1020150126971A KR101679150B1 (en) 2015-09-08 2015-09-08 Device for holding the position of pin

Publications (1)

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KR101679150B1 true KR101679150B1 (en) 2016-11-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108130931A (en) * 2018-01-09 2018-06-08 赵德朝 Novel hydraulic crushing hammer piston hydrostatic support and lubrication system
KR20200112075A (en) * 2019-03-20 2020-10-05 정문교 Piston for hydraulic breaker

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100413385B1 (en) 2001-12-17 2004-01-03 주식회사수산중공업 Apparatus for holding the position of pin
US20100322743A1 (en) 2007-07-09 2010-12-23 Itw Sverige Ab Fastening device
KR101265966B1 (en) 2011-10-18 2013-05-22 주식회사 성우하이텍 Self piercing rivet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100413385B1 (en) 2001-12-17 2004-01-03 주식회사수산중공업 Apparatus for holding the position of pin
US20100322743A1 (en) 2007-07-09 2010-12-23 Itw Sverige Ab Fastening device
KR101265966B1 (en) 2011-10-18 2013-05-22 주식회사 성우하이텍 Self piercing rivet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108130931A (en) * 2018-01-09 2018-06-08 赵德朝 Novel hydraulic crushing hammer piston hydrostatic support and lubrication system
KR20200112075A (en) * 2019-03-20 2020-10-05 정문교 Piston for hydraulic breaker
KR102242995B1 (en) * 2019-03-20 2021-04-22 정문교 Piston for hydraulic breaker

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