KR100829522B1 - Link seal of crawler track and method thereof - Google Patents

Link seal of crawler track and method thereof Download PDF

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Publication number
KR100829522B1
KR100829522B1 KR1020070070698A KR20070070698A KR100829522B1 KR 100829522 B1 KR100829522 B1 KR 100829522B1 KR 1020070070698 A KR1020070070698 A KR 1020070070698A KR 20070070698 A KR20070070698 A KR 20070070698A KR 100829522 B1 KR100829522 B1 KR 100829522B1
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KR
South Korea
Prior art keywords
track
seal
seal body
coupling groove
link
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KR1020070070698A
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Korean (ko)
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김준기
한병희
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주식회사 디씨에프 트랙
이기광
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/088—Endless track units; Parts thereof with means to exclude or remove foreign matter, e.g. sealing means, self-cleaning track links or sprockets, deflector plates or scrapers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Sealing Devices (AREA)

Abstract

A link seal of a crawler track and a method for manufacturing the same are provided to extend lifespan thereof by preventing separation of a sealing unit from a seal body. A link seal of a crawler track includes a seal body(103) and a sealing unit(105). A through hole(100) is formed on a center of the seal body. A plurality of square coupling grooves(101) are repeatedly formed on an upper surface of the seal body. A stopping projection is formed on a lower side of an outer surface of the seal body. A plurality of projection units(104) corresponding to the square coupling grooves are formed on a bottom surface of the sealing unit. The sealing unit is pressed in case of coupling of the square coupling grooves with the projection units and is formed as one body with the seal body.

Description

무한궤도용 트랙의 링크씰 및 그 제조방법{link seal of crawler track and method thereof}Link seal of crawler track and its manufacturing method {link seal of crawler track and method

본 발명은 굴삭기 등에 장착되는 무한궤도형 트랙의 트랙축상에 장착되는 링 형상의 링크씰을 제조하는 작업공정을 단축하고, 하중으로 인해 링크씰의 부품이 박리되는 것을 방지할 수 있도록한 무한궤도용 트랙의 링크씰 및 그 제조방법에 관한 것이다.The present invention shortens the work process for manufacturing a ring-shaped link seal mounted on the track axis of the tracked track mounted on an excavator, etc., for the endless track to prevent the parts of the link seal from peeling off due to the load A link seal of a track and a method of manufacturing the same.

더욱 상세하게는, 트랙의 트랙축상에 장착되어 링크의 부싱과 핀사이에 주입된 윤활제(그리이스 등)의 누출을 방지하고, 링크에 외부로부터 토사, 먼지 및 빗물 등의 이물질이 침투 또는 유입되는 것을 차단하는 링크씰을 제조하는 작업공정을 줄여 원가비용을 낮추고, 링크씰의 내구성을 증대시켜 사용수명을 연장할 수 있도록한 무한궤도용 트랙의 링크씰 및 그 제조방법에 관한 것이다.More specifically, it is mounted on the track axis of the track to prevent leakage of lubricant (grease, etc.) injected between the bushing of the link and the pin, and foreign matter such as soil, dust, and rainwater from the outside is introduced into the link. The present invention relates to a link seal of a track for tracks and a method of manufacturing the same, which reduces the cost of manufacturing a link seal to cut off, lowers the cost cost, and increases the durability of the link seal.

도 1(a,b)에 도시된 바와 같이, 종래 기술에 의한 무한궤도용 트랙의 링크씰은, 고강도수지재로서 사출성형되고, 외측면 하측에 단턱부(1)가 형성되는 씰몸 체(2)와, 씰몸체(2)에 도포처리되는 접착제에 의해 씰몸체(2)의 상면에 고정되어 일체형으로 형성되고, 폴리우레탄수지재의 링 형상을 갖는 씰링부(3)로 이루어지는 제1오링(4)과,As shown in Fig. 1 (a, b), the link seal of the track for tracks according to the prior art is injection molded as a high-strength resin material, the seal body 2 is formed with a stepped portion 1 on the lower side of the outer surface ) And a first O-ring (4) consisting of a sealing portion (3) which is fixed to the upper surface of the seal body (2) by an adhesive applied to the seal body (2) and formed integrally, and has a ring shape of a polyurethane resin material. )and,

단턱부(1)에 끼워맞춤되는 탄성력이 뛰어난 합성수지재(일예로서 고무재를 말함)의 제2오링(5)(또는 "씰링탄성체" 라고함)을 포함한다.And a second O-ring 5 (or " sealing elastic body ") of a synthetic resin material (e.g., a rubber material) having excellent elastic force fitted to the stepped portion 1.

도 2에 도시된 바와 같이, 종래 기술에 의한 무한궤도용 트랙의 링크씰 제조방법은, 고강도수지재를 이용하여 씰몸체(2)를 사출성형하는 제1사출공정(S10)과,As shown in Figure 2, the link seal manufacturing method of the track for tracks according to the prior art, the first injection step (S10) for injection molding the seal body 2 using a high-strength resin material,

씰몸체(2)의 일측면에 접착제를 도포시키는 도포공정(S20)과,An application step (S20) for applying an adhesive to one side of the seal body (2),

씰몸체(2)에 고정되어 일체형으로 형성되는 씰링부(3)를 폴리우레탄수지재를 이용하여 사출성형하는 제2사출공정(S30)(씰몸체(2)와 씰링부(3)로 이루어진 제1오링(4)을 성형하는 공정임)과,The second injection process (S30) (the seal body 2 and the sealing portion 3) for injection molding the sealing portion 3 fixed to the seal body 2 to be integrally formed using a polyurethane resin material (S30) 1 O-ring (4) forming process),

제2사출공정(S30)에서 성형되는 씰몸체(2)의 외측면 하측에 형성된 단턱부(1)에 탄성력이 뛰어난 합성수지재의 제2오링(5)을 끼워맞추는 씰링탄성체 결합공정(S40)을 포함한다.Sealing elastic body joining process (S40) for fitting the second O-ring 5 of the synthetic resin material having excellent elasticity to the stepped portion (1) formed on the lower side of the outer side of the seal body (2) formed in the second injection process (S30) do.

종래 기술에 의해 무한궤도형 트랙의 링크씰을 제조하는 경우, 전술한 제1오링(4)을 이루는 씰몸체(2)의 일측면에 접착제를 도포시키는 작업이 작업자에 의한 수작업으로 진행되므로, 작업시간이 증가되고 작업자의 피로도가 가중되어 생산성이 떨어진다. 이로 인해 원가비용이 상승되므로 가격 경쟁력이 떨어지는 문제점을 갖는다.When manufacturing the link seal of the tracked track by the prior art, since the operation of applying the adhesive to one side of the seal body 2 forming the first O-ring (4) described above is performed manually by the operator, Increased time and increased worker fatigue reduce productivity. As a result, the cost cost rises and thus the price competitiveness is lowered.

전술한 바와 같이, 고강도수지재로서 성형되는 씰몸체(2)와, 폴리우레탄수지재로서 성형되는 링 형상의 씰링부(3)를 이루는 재질의 물성(物性)이 서로 상이하고, 씰몸체(2)에 대해 씰링부(3)가 접착제의 접착력에 의해 일체형으로 성형된다.As described above, the physical properties of the material forming the seal body 2 formed as a high strength resin material and the ring-shaped sealing portion 3 formed as a polyurethane resin material are different from each other, and the seal body 2 The sealing portion 3 is integrally molded by the adhesive force of the adhesive.

이로 인해 무한궤도형 장비(일예로서 굴삭기 등을 말함)의 주행시 고하중으로 인한 마찰력이 씰몸체(2)와 씰링부(3)의 접착부위에 가해지는 경우, 접착제의 접착력이 약해져 씰몸체(2)로부터 씰링부(3)가 쉽게 박리되어 분리되므로 링크씰의 사용수명이 현저하게 단축되는 한 문제점을 갖는다.As a result, when the frictional force due to the heavy load is applied to the bonding portion between the seal body 2 and the sealing portion 3 when the crawler-type equipment (for example, an excavator, etc.) travels, the adhesive force of the adhesive is weakened, and the seal body (2) Since the sealing portion 3 is easily peeled off and separated, there is a problem that the service life of the link seal is significantly shortened.

본 발명의 실시예는, 무한궤도형 트랙축에 장착되는 링 형상의 링크씰을 제조하는 작업공정을 단축하여 원가비용을 줄임에 따라 가격경쟁력을 갖도록한 무한궤도용 트랙의 링크씰 및 그 제조방법과 관련된다.Embodiment of the present invention, the link seal of the track for track tracks and its manufacturing method to reduce the cost cost by reducing the work process of manufacturing a ring-shaped link seal mounted on the track track track shaft Is associated with.

본 발명의 실시예는, 고하중으로 인한 마찰력이 씰몸체와 씰링부의 접착부위에 가해지는 경우에도 씰몸체로부터 씰링부의 박리되는 것을 방지하여 링크씰의 사용수명을 연장할 수 있도록한 무한궤도용 트랙의 링크씰 및 그 제조방법과 관련된다.According to an embodiment of the present invention, even when the frictional force due to the high load is applied to the seal portion and the bonding portion of the sealing portion, the track for tracks to prevent the peeling of the sealing portion from the seal body to extend the service life of the link seal It relates to a link seal and a method of manufacturing the same.

본 발명의 일 실시예에 의한 무한궤도용 트랙의 링크씰은, 무한궤도용 트랙의 링크씰에 있어서,The link seal of the track for crawling track according to an embodiment of the present invention, the link seal of the track for crawling track,

트랙축에 대응되는 관통공이 형성되고, 상면에 사각형의 결합홈이 반복형성되며, 외측면 하측에 걸림턱이 형성되는 씰몸체와,A through-hole corresponding to the track shaft is formed, and a rectangular coupling groove is repeatedly formed on the upper surface, and a seal body having a locking jaw formed on the lower side of the outer surface;

결합홈에 대응되는 돌출부가 바닥면에 형성되고, 결합홈과 돌출부의 상호 요철결합시 가압되어 씰몸체와 일체형으로 형성되는 링 형상의 씰링부를 포함한다.A protrusion corresponding to the coupling groove is formed on the bottom surface, and includes a ring-shaped sealing portion that is pressurized when the coupling groove and the protrusion are coupled to each other unevenly and integrally formed with the seal body.

바람직한 실시예에 의하면, 전술한 결합홈은 씰몸체의 상면에 원주방향으로 2열으로 형성되고, 씰링부에 형성되는 돌출부는 결합홈에 대응되게 형성된다.According to a preferred embodiment, the above-described coupling groove is formed in two rows in the circumferential direction on the upper surface of the seal body, the protrusions formed in the sealing portion is formed to correspond to the coupling groove.

본 발명의 일 실시예에 의한 무한궤도용 트랙의 링크씰 제조방법은, 무한궤도형 트랙의 링크씰 제조방법에 있어서,Link seal manufacturing method of the track for crawling track according to an embodiment of the present invention, in the track seal manufacturing method of track track,

트랙축에 대응되는 관통공이 중앙에 형성되고, 상면에 사각형의 결합홈이 반복형성되며, 외측면 하측에 걸림턱이 형성되는 씰몸체를 사출성형하는 제1공정과,A first step of injection molding a seal body having a through hole corresponding to the track shaft in the center, a quadrangular coupling groove formed on the upper surface, and a locking jaw formed on the lower side of the outer surface;

씰몸체를 금형에 안착시킨 후, 결합홈에 대응되는 돌출부가 바닥면에 형성되는 링 형상의 씰링부를 사출성형시, 요철결합되는 결합홈과 돌출부를 가압시켜 씰몸체와 씰링부를 일체형으로 성형하는 제2공정을 포함한다.After seating the seal body on the mold, when injection molding the ring-shaped sealing portion in which the protrusion corresponding to the coupling groove is formed on the bottom, pressurizing the coupling groove and the protrusion to be unevenly coupled to form the seal body and the sealing portion integrally. It includes two steps.

전술한 바와 같이, 본 발명의 실시예에 의한 무한궤도용 트랙의 링크씰 및 그 제조방법은 아래와 같은 이점을 갖는다.As described above, the link seal and the method of manufacturing the track for crawling track according to an embodiment of the present invention has the following advantages.

무한궤도형 트랙축에 장착되는 링 형상의 링크씰을 제조하는 작업공정을 단축하여 원가비용을 줄임에 따라 가격경쟁력을 갖는다.It has a price competitiveness by shortening the work process of manufacturing the ring-shaped link seals mounted on the tracked track shaft.

또한, 고하중으로 인한 마찰력이 씰몸체와 씰링부의 접착부위에 가해지는 경우에도 씰몸체로부터 씰링부의 박리(분리되는 것을 말함)되는 것을 방지하여 링크씰의 사용수명을 연장할 수 있어 신뢰성을 갖는다.In addition, even when the frictional force due to the high load is applied to the bonding portion of the seal body and the sealing portion, it is possible to prevent the peeling of the sealing portion from the seal body (that is, to be separated), thereby extending the service life of the link seal and having reliability.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명하되, 이는 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는 것이다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to describe in detail enough to enable those skilled in the art to easily practice the invention, and therefore It does not mean that the technical spirit and scope of the present invention is limited.

도 3 및 도 4에 도시된 바와 같이, 본 발명의 일 실시예에 의한 무한궤도용 트랙의 링크씰은, 굴삭기 등에 장착되는 무한궤도형 트랙의 트랙축(미도시됨)에 대응되는 관통공(100)이 중앙에 형성되고, 상면에 사각형의 결합홈(101)이 반복형성되며, 외측면 하측에 걸림턱(102)이 형성되는 고강도수지재(일예로서 폴리카보네이트(PC)재를 말함)로 사출성형되는 씰몸체(103)와,As shown in Figure 3 and 4, the link seal of the track track according to an embodiment of the present invention, the through hole corresponding to the track axis (not shown) of the track track mounted on an excavator or the like ( 100 is formed in the center, a rectangular coupling groove 101 is repeatedly formed on the upper surface, and a high-strength resin material (referring to polycarbonate (PC) material as an example) is formed with a locking jaw 102 on the lower side of the outer surface. Seal body 103 that is injection molded,

결합홈(101)에 대응되는 돌출부(104)가 바닥면에 형성되고, 결합홈(101)과 돌출부(104)의 상호 요철결합시 가압되어 씰몸체(103)와 일체형으로 형성되는 링 형상의 폴리우레탄수지재로 사출성형되는 씰링부(105)를 포함한다.Protruding portion 104 corresponding to the coupling groove 101 is formed on the bottom surface, the ring-shaped poly is formed integrally with the seal body 103 by pressing when the coupling groove 101 and the protrusion 104 are mutually uneven Sealing portion 105 that is injection molded into a urethane resin material.

전술한 결합홈(101)은 씰몸체(103)의 상면에 원주방향으로 2열으로 형성되고, 씰링부(105)에 형성되는 돌출부(104)는 결합홈(101)에 대응되게 형성될 수 있다.The above-described coupling groove 101 may be formed in two rows on the upper surface of the seal body 103 in the circumferential direction, and the protrusions 104 formed on the sealing portion 105 may correspond to the coupling groove 101. .

도면중 미 설명부호 106은 씰몸체(103)의 걸림턱(102)에 끼워맞춤되는 합성수지재(rubber재를 말함)의 오링이다.In the figure, reference numeral 106 is an O-ring of a synthetic resin material (referring to a rubber material) that is fitted to the locking jaw 102 of the seal body 103.

즉, 링크씰이 물성이 서로 다른 재질으로 이루어져 일체형으로 성형됨에 따라, 트랙으로부터 전달되는 고하중에 의한 높은 압력은 고강도수지재로서 형성되는 씰몸체(103)에서 지지하고, 트랙으로부터 전달되는 상대적으로 낮은 압력은 폴리우 레탄수지재로서 형성된 씰링부(105)에서 지지하게 된다.That is, as the link seal is formed integrally with different physical properties, the high pressure due to the high load transmitted from the track is supported by the seal body 103 formed as a high-strength resin material, and the relatively low pressure transmitted from the track. The pressure is supported by the sealing portion 105 formed as the polyurethane resin material.

이때, 무한궤도형 트랙의 트랙축(미도시됨)상에 장착되어 주행시 윤활제의 누출되는 것을 방지하고, 외부로부터 링크에 토사, 먼지 및 수분 등의 이물질이 유입되는 것을 방지하는 링크씰은 당해분야에서 사용되는 기술내용에 속한다할 것이므로 이들의 상세한 구조 및 작동의 설명은 생략한다.At this time, the link seal is mounted on the track axis (not shown) of the tracked track to prevent leakage of lubricant during driving, and to prevent foreign substances such as soil, dust, and moisture from entering the link from the outside. It will belong to the technical content used in the description of these detailed structure and operation will be omitted.

도 5에 도시된 바와 같이, 본 발명의 일 실시예에 의한 무한궤도용 트랙의 링크씰 제조방법은, 트랙축(미도시됨)에 대응되는 관통공(100)이 중앙에 형성되고, 상면에 사각형의 결합홈(101)이 반복형성되며, 외측면 하측에 걸림턱(102)이 형성되는 씰몸체(103)를 고강도수지재(일예로서 폴리카보네이트(PC)재를 말함)로서 사출성형하는 제1공정(S100 참조)과,As shown in FIG. 5, in the method for manufacturing a link seal of an endless track according to an embodiment of the present invention, a through hole 100 corresponding to a track axis (not shown) is formed at the center and is disposed on an upper surface thereof. The square coupling groove 101 is repeatedly formed, and the injection molding the seal body 103, the locking jaw 102 is formed on the lower side of the outer side as a high-strength resin material (for example, polycarbonate (PC) material) 1 step (see S100),

씰몸체(103)를 금형(미도시됨)에 안착시킨 후, 결합홈(101)에 대응되는 돌출부(104)가 바닥면에 형성되는 링 형상의 씰링부(105)를 폴리우레탄수지재로서 사출성형시, 요철결합되는 결합홈(101)과 돌출부(104)를 가압시켜 씰몸체(103)와 씰링부(105)를 일체형으로 성형하는 제2공정(S200 참조)을 포함한다.After the seal body 103 is seated in a mold (not shown), a ring-shaped sealing portion 105 in which a protrusion 104 corresponding to the coupling groove 101 is formed on the bottom surface is injected as a polyurethane resin material. In molding, a second step (see S200) of forming the seal body 103 and the sealing part 105 in a single body by pressing the coupling groove 101 and the protrusion 104 to be unevenly coupled.

이하에서, 본 발명의 일 실시예에 의한 무한궤도용 트랙의 링크씰 제조방법을 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings the link seal manufacturing method of the track for caterpillar according to an embodiment of the present invention will be described in detail.

도 4 및 도 5에 도시된 바와 같이, 굴삭기 등의 하부주행체로 사용되는 무한궤도형 트랙의 트랙축(미도시됨)에 대응되는 관통공(100)이 중앙에 형성되고, 상면에 사각형의 결합홈(101)이 반복형성되며, 외측면 하측에 걸림턱(102)이 형성되는 씰몸체(103)를 고강도수지재(일예로서 폴리카보네이트(PC)재를 말함)로서 사출성형한다(S100 참조).As shown in Figure 4 and 5, the through hole 100 corresponding to the track axis (not shown) of the tracked track used as a lower running body such as an excavator is formed in the center, the coupling of the square on the upper surface The groove 101 is repeatedly formed, and the seal body 103 having the locking jaw 102 formed on the lower side of the outer surface is injection molded as a high-strength resin material (for example, a polycarbonate (PC) material) (see S100). .

씰몸체(103)를 금형(미도시됨)에 안착시킨 후, 결합홈(101)에 대응되는 돌출부(104)가 바닥면에 형성되는 링 형상의 씰링부(105)를 폴리우레탄수지재로서 사출성형시, 요철결합되는 결합홈(101)과 돌출부(104)를 가압시켜 씰몸체(103)와 씰링부(105)를 일체형으로 성형한다(S200 참조).After the seal body 103 is seated in a mold (not shown), a ring-shaped sealing portion 105 in which a protrusion 104 corresponding to the coupling groove 101 is formed on the bottom surface is injected as a polyurethane resin material. In molding, the sealing body 103 and the sealing part 105 are integrally molded by pressing the coupling groove 101 and the protrusion 104 to be unevenly coupled (see S200).

이때, 전술한 돌출부(104)와 요철결합으로 끼워맞춤되는 결합홈(101)은 씰몸체(103)의 상면에 원주방향으로 2열으로 형성될 수 있으며, 이로서 한정되는 것은 결코 아니다.At this time, the coupling groove 101 to be fitted to the above-described protrusion 104 and the concave-convex coupling may be formed in two rows in the circumferential direction on the upper surface of the seal body 103, but is not limited thereto.

따라서, 무한궤도형 트랙이 장착된 굴삭기와 같은 중장비의 주행 또는 작업시, 무한궤도형 트랙으로부터 전달되는 고하중으로 인한 마찰열이 씰몸체(103)와 씰링부(105)의 결합부위에 전달되는 경우에도 이들의 박리되는 것을 방지할 수 있다.Therefore, even when driving or working heavy equipment such as an excavator equipped with a tracked track, frictional heat due to the high load transmitted from the tracked track is transmitted to the coupling portion of the seal body 103 and the sealing portion 105. Peeling of these can be prevented.

즉 씰몸체(103)에 형성된 결합홈(101)과 결합홈(101)과 대응되도록 씰링부(105)에 형성된 돌출부(104)가 상호 요철결합으로 끼워맞춤되고, 씰링부(105)의 사출성형시 소정압력으로 돌출부(104)와 결합홈(101)이 압착고정된다.That is, the coupling groove 101 formed in the seal body 103 and the protrusion 104 formed in the sealing portion 105 are fitted to each other by concave-convex coupling so as to correspond to the coupling groove 101, and injection molding of the sealing portion 105 is performed. At the predetermined pressure, the protrusion 104 and the coupling groove 101 are pressed and fixed.

따라서, 트랙으로부터 전달되는 고하중으로 인한 마찰열에 대해 씰몸체(103) 와 씰링부(105)의 접착부위에서의 박리현상은 방지될 수 있다.Therefore, the peeling phenomenon at the adhesion portion of the seal body 103 and the sealing portion 105 against frictional heat due to the high load transmitted from the track can be prevented.

전술한 바와 같이, 본 발명의 실시예에 의한 무한궤도용 트랙의 링크씰 및 그 제조방법은, 무한궤도형 트랙의 트랙축에 장착되는 링 형상의 링크씰을 제조하는 작업공정을 단축하여 원가비용을 줄이고, 트랙의 고하중으로 인한 마찰력이 씰몸체와 씰링부의 접착부위에 가해지는 경우에도 씰몸체로부터 씰링부의 박리되는 것을 방지할 수 있다.As described above, the link seal of the crawler track according to the embodiment of the present invention and the manufacturing method thereof, cost reduction by reducing the work process for manufacturing a ring-shaped link seal mounted on the track shaft of the track track It is possible to prevent the sealing part from peeling off from the seal body even when the frictional force due to the high load of the track is applied to the seal body and the bonding portion of the sealing part.

도 1(a,b)은 종래 기술에 의한 무한궤도용 트랙의 링크씰의 분리사시도 및 결합단면도,Figure 1 (a, b) is an exploded perspective view and a cross-sectional view of the link seal of the track for tracks according to the prior art,

도 2는 종래 기술에 의한 무한궤도용 트랙의 링크씰 제조방법을 나타내는 작업공정도,Figure 2 is a work flow diagram showing a link seal manufacturing method of a track for tracks according to the prior art,

도 3은 본 발명의 일 실시예에 의한 무한궤도용 트랙의 링크씰의 분리사시도,Figure 3 is an exploded perspective view of the link seal of the track for caterpillar according to an embodiment of the present invention,

도 4는 본 발명의 일 실시예에 의한 무한궤도용 트랙의 링크씰의 단면도,Figure 4 is a cross-sectional view of the link seal of the track for caterpillar according to an embodiment of the present invention,

도 5는 본 발명의 일 실시예에 의한 무한궤도용 트랙의 링크씰 제조방법을 나타내는 흐름도이다.5 is a flowchart illustrating a link seal manufacturing method of a track for crawling tracks according to an embodiment of the present invention.

*도면중 주요 부분에 사용된 부호의 설명* Explanation of symbols used in the main part of the drawing

100; 관통공100; Through hole

101; 결합홈101; Combined groove

102; 걸림턱102; Jam

103; 씰몸체103; Seal

104; 돌출부104; projection part

105; 씰링부105; Sealing part

106; 오링106; O-ring

Claims (3)

무한궤도용 트랙의 링크씰에 있어서:In the link seal of a track for tracks: 트랙축에 대응되는 관통공이 형성되고, 상면에 사각형의 결합홈이 반복형성되며, 외측면 하측에 걸림턱이 형성되는 씰몸체; 및A seal body having a through hole corresponding to the track axis, a quadrangular coupling groove formed on the upper surface thereof, and a locking jaw formed on the lower side of the outer surface thereof; And 상기 결합홈에 대응되는 돌출부가 바닥면에 형성되고, 상기 결합홈과 돌출부의 상호 요철결합시 가압되어 상기 씰몸체와 일체형으로 형성되는 링 형상의 씰링부를 포함하는 것을 특징으로 하는 무한궤도용 트랙의 링크씰.Protruding portion corresponding to the coupling groove is formed on the bottom surface of the track for tracks, characterized in that it comprises a ring-shaped sealing portion is formed integrally with the seal body is pressed during mutual coupling of the coupling groove and the protrusion Link seal. 청구항 1에 있어서, 상기 결합홈은 상기 씰몸체의 상면에 원주방향으로 2열으로 형성되고, 상기 씰링부에 형성되는 돌출부는 상기 결합홈에 대응되게 형성되는 것을 특징으로 하는 무한궤도형 트랙의 링크씰.The track of claim 1, wherein the coupling groove is formed in two rows on the upper surface of the seal body in the circumferential direction, and the protrusions formed in the sealing part are formed to correspond to the coupling groove. Seal. 무한궤도형 트랙의 링크씰 제조방법에 있어서:In the method of manufacturing the link seal of the tracked track: 트랙축에 대응되는 관통공이 중앙에 형성되고, 상면에 사각형의 결합홈이 반복형성되며, 외측면 하측에 걸림턱이 형성되는 씰몸체를 사출성형하는 제1공정; 및A first step of injection molding a seal body having a through hole corresponding to the track shaft in the center, a quadrangular coupling groove formed on the upper surface thereof, and a locking jaw formed on the lower side of the outer surface; And 상기 씰몸체를 금형에 안착시킨 후, 상기 결합홈에 대응되는 돌출부가 바닥면에 형성되는 링 형상의 씰링부를 사출성형시, 요철결합되는 상기 결합홈과 돌출부를 가압시켜 씰몸체와 씰링부를 일체형으로 성형하는 제2공정을 포함하는 것을 특징으로 하는 무한궤도용 트랙의 링크씰 제조방법.After seating the seal body on a mold, when injection molding a ring-shaped sealing portion formed with a protrusion corresponding to the coupling groove on the bottom surface, the seal body and the sealing portion are integrally formed by pressing the coupling groove and the protrusion which are unevenly coupled. Link seal manufacturing method of the track for tracks, characterized in that it comprises a second step of molding.
KR1020070070698A 2007-07-13 2007-07-13 Link seal of crawler track and method thereof KR100829522B1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100867155B1 (en) 2008-05-23 2008-11-06 허영배 Apparatus for manufacturing link seal assembly
KR101022265B1 (en) * 2009-12-17 2011-03-21 허정중 Link-seal for trackfor track-laying vehicle
KR101426044B1 (en) 2012-08-29 2014-08-05 주식회사 에스.제이테크 A mold core for manufacturing a seal with micro dimple
CN108692027A (en) * 2017-04-07 2018-10-23 李起光 Chain sealing ring for endless-track vehicle track
KR20200131413A (en) 2019-05-14 2020-11-24 이기광 Link seal for track of an endless-track vehicle
KR20230073862A (en) * 2021-11-19 2023-05-26 차윤아 Seal assembly for a track vehicle
WO2023204415A1 (en) * 2022-04-21 2023-10-26 이기광 Link seal of continuous track and manufacturing method thereof

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KR19980034733U (en) * 1996-12-11 1998-09-15 박병재 Assembly structure of oil seal
JPH1113890A (en) 1997-06-27 1999-01-22 Nippon Mektron Ltd Seal structure for crawler belt pin
KR200270214Y1 (en) 2001-12-28 2002-03-28 송승규 oil pressure cylinder piston
KR100656153B1 (en) 2005-12-09 2006-12-13 허영배 Link-seal manufacturing method of oil lubricated track for track-laying vehicle and link-seal thereof
KR100732919B1 (en) 2007-02-28 2007-06-28 허영배 Link seal for a caterpillar track

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980034733U (en) * 1996-12-11 1998-09-15 박병재 Assembly structure of oil seal
JPH1113890A (en) 1997-06-27 1999-01-22 Nippon Mektron Ltd Seal structure for crawler belt pin
KR200270214Y1 (en) 2001-12-28 2002-03-28 송승규 oil pressure cylinder piston
KR100656153B1 (en) 2005-12-09 2006-12-13 허영배 Link-seal manufacturing method of oil lubricated track for track-laying vehicle and link-seal thereof
KR100732919B1 (en) 2007-02-28 2007-06-28 허영배 Link seal for a caterpillar track

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100867155B1 (en) 2008-05-23 2008-11-06 허영배 Apparatus for manufacturing link seal assembly
KR101022265B1 (en) * 2009-12-17 2011-03-21 허정중 Link-seal for trackfor track-laying vehicle
KR101426044B1 (en) 2012-08-29 2014-08-05 주식회사 에스.제이테크 A mold core for manufacturing a seal with micro dimple
CN108692027A (en) * 2017-04-07 2018-10-23 李起光 Chain sealing ring for endless-track vehicle track
KR20200131413A (en) 2019-05-14 2020-11-24 이기광 Link seal for track of an endless-track vehicle
KR20230073862A (en) * 2021-11-19 2023-05-26 차윤아 Seal assembly for a track vehicle
KR102649252B1 (en) * 2021-11-19 2024-03-20 차윤아 Seal assembly for a track vehicle
WO2023204415A1 (en) * 2022-04-21 2023-10-26 이기광 Link seal of continuous track and manufacturing method thereof

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