WO2005124093A1 - An auto lubrication device for hydraulic breaker - Google Patents

An auto lubrication device for hydraulic breaker Download PDF

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Publication number
WO2005124093A1
WO2005124093A1 PCT/KR2005/000673 KR2005000673W WO2005124093A1 WO 2005124093 A1 WO2005124093 A1 WO 2005124093A1 KR 2005000673 W KR2005000673 W KR 2005000673W WO 2005124093 A1 WO2005124093 A1 WO 2005124093A1
Authority
WO
WIPO (PCT)
Prior art keywords
grease
pumping
breaker
piston
compressing
Prior art date
Application number
PCT/KR2005/000673
Other languages
French (fr)
Inventor
Ki Ho Lee
Original Assignee
Ki Ho Lee
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR10-2004-0018195 priority Critical
Priority to KR1020040018195A priority patent/KR100460984B1/en
Priority to KR10-2004-0037595 priority
Priority to KR1020040037595A priority patent/KR100460985B1/en
Application filed by Ki Ho Lee filed Critical Ki Ho Lee
Publication of WO2005124093A1 publication Critical patent/WO2005124093A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D17/00Details of, or accessories for, portable power-driven percussive tools
    • B25D17/26Lubricating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N13/00Lubricating-pumps
    • F16N13/02Lubricating-pumps with reciprocating piston
    • F16N13/06Actuation of lubricating-pumps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2216/00Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007Details of percussion or rotation modes
    • B25D2216/0015Tools having a percussion-only mode

Abstract

Disclosed herein is an automatic lubrication device for automatically supplying grease to a hydraulic breaker. The device is designed to supply a predetermined amount of grease to requisite components in a constant striking period by use of a pressure difference in a space above a piston within the breaker where a high pressure and a low pressure are alternately generated according to strike of the piston. The device comprises an input mechanism re¬ ciprocating whenever the breaker strikes for transmitting strike and force thereof to a compressing mechanism, the compressing mechanism for converting reciprocation of the input mechanism into rotation and compressing a spring of a pumping mechanism, the pumping mechanism compressed by amplified force of the compressing mechanism and pumping the grease in the constant striking period, and a filling mechanism for supplying the grease to the pumping mechanism while containing the grease.

Description

Description AN AUTO LUBRICATION DEVICE FOR HYDRAULIC BREAKER Technical Field
[1] The present invention relates to an automatic lubrication device for an hydraulic breaker, and, more particularly, to an automatic lubrication device for an hydraulic breaker, designed to supply a predetermined amount of grease to requisite components in a constant striking period by use of a pressure difference of gas in a space above a piston within the breaker or of vibration generating on a body of the breaker.
[2] Background Art
[3] A hydraulic breaker forces a piston within the breaker to strike a chisel by use of a hydraulic pressure, and breaks a rock bed. During operation, the chisel and a chisel guide surface of the hydraulic breaker suffer significant friction, and thus require lubrication.
[4] Conventionally, most hydraulic breakers have nipples for filling grease to be supplied to every component requiring lubrication, so that a user fills the grease therein at a predetermined period or at every required time. However, not only are these works time consuming for the user, but the hydraulic breaker is also damaged when the grease is not filled in the nipples at a proper time, thereby reducing life of the hydraulic breaker.
[5] Some hydraulic breakers are equipped with an automatic lubrication pump to automatically eject the grease into the requisite components. However, the conventional automatic lubrication pump withdraws a portion of hydraulic pressure forcing the hydraulic breaker to actuate, and ejects the grease by use of the withdrawn hydraulic pressure. Accordingly, the structure of the hydraulic breaker using the conventional automatic lubrication pump is complicated, and has a large size. Moreover, since the conventional hydraulic breaker employs a disposable grease container, there is a problem of high costs for the lubrication.
[6] Disclosure of Invention Technical Problem
[7] Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a hydraulic breaker, which is designed to supply a predetermined amount of grease to requisite components in a constant striking period by use of a pressure difference of gas in a space above a piston within the breaker or of vibration generating on a body of the breaker, thereby minimizing inconvenience of a user of the breaker, and permitting inexpensive lubrication in comparison to a conventional lubrication (grease) supply device, thereby extending the life of the breaker.
[8] Technical Solution
[9] In accordance with one aspect of the present invention, the above and other objects can be accomplished by the provision of an automatic lubrication device equipped to a hydraulic breaker to automatically supply grease to requisite components in a constant striking period, which comprises: an input mechanism reciprocating whenever the breaker strikes for transmitting strike and force to a compressing mechanism; the compressing mechanism for converting reciprocation of the input mechanism into rotation and compressing a spring of a pumping mechanism; the pumping mechanism compressed by amplified force of the compressing mechanism and pumping the grease in the constant striking period; and a filling mechanism for supplying the grease to the pumping mechanism while containing the grease.
[10] The input mechanism may comprise an input piston linearly moved in direct conjunction with variation in pressure of gas (air or nitrogen gas) in a space above a piston within the breaker for transmitting the force to the compressing mechanism, a first check ball and a first check spring assembled within the input piston, such that the first check ball opens the piston when the piston is lowered within the breaker, and such that the first check ball closes the piston when the piston is raised within the breaker, for adjusting a flow direction of the gas, and an input socket as a guide for the input piston and as a connection port for connecting the input mechanism to the breaker via a hose.
[11] The compressing mechanism may comprise: a sliding bar for converting linear reciprocation from the input mechanism into rotation of a compressing shaft; clutch bearings for converting pivotal movement of the sliding bar into unidirectional rotation of the compressing shaft; and the compressing shaft for transmitting pumping force to a pumping piston of the pumping mechanism while rotating in one direction.
[12] The pumping mechanism may comprise: the pumping piston for receiving rotational force of the compressing shaft and periodically pumping the grease; a compression spring compressed by the rotational force of the compressing shaft for pushing the pumping piston by use of repulsive force; a second check ball and a second check spring as a check valve for generating unidirectional flow of the grease; and an eject nipple for supplying ejected grease to the requisite components via the hose. [13] The filling mechanism may be a grease barrel for filling the grease, which comprises: a barrel base connected to a body of the grease pump and constituting the bottom of the grease barrel; a third check ball and a third check spring assembled within the barrel base for preventing the grease from flowing down when the grease barrel is filled with the grease; a suction/discharge plate for suctioning or discharging the grease; a sealing plate and a sealing member for preventing leakage of the grease; an air discharge spring for discharging air between the grease in the grease barrel and the suction/discharge plate after the grease is suctioned; a grease discharge spring for assisting in discharge of the grease when the grease in the grease barrel is discharged by the pumping mechanism; a filling handle serving as a handle of the grease barrel when filling the grease into the grease barrel; a barrel cover for guiding the filling handle and covering a barrel body; the barrel body made of a transparent material so as to allow an amount of grease to be observed and for containing the grease; and a barrel connection pipe assembled to the barrel base for assisting in filling of the grease when filling the grease into the grease barrel.
[14] In accordance with another aspect of the present invention, an automatic lubrication device equipped to a hydraulic breaker to automatically supply grease to requisite components in a constant striking period is provided, which comprises: the input mechanism vertically reciprocating by virtue of vibration of the breaker occurring at every strike of the breaker, and a pumping mechanism for converting vertical reciprocation of the input mechanism into unidirectional rotation and converting the unidirectional rotation into reciprocation in order to pump the grease in the constant striking period; and a grease filling mechanism for supplying the grease to the pumping mechanism while containing the grease.
[15] The input mechanism may comprise a vibrating ball vertically reciprocating according to the vibration of the breaker, and first and second vibrating springs disposed at upper and lower portions of the vibrating ball, respectively, the vibrating ball vertically reciprocating while alternately pushing the first and second vibrating springs upon the vibration of the breaker.
[16] The pumping mechanism may comprise a torsion bar for converting the vertical reciprocation of the vibrating ball into pivotal movement at a predetermined angle and for amplifying the force, first and second clutch bearings for transmitting rotational force of the torsion bar only in one direction, a pumping shaft rotating in one direction by the first and second clutch bearings, a pumping piston reciprocating by virtue of rotational force of the pumping shaft for periodically pumping the grease, a check valve for adjusting unidirectional flow of the grease, a nipple for supplying ejected grease to the requisite components via a hose, and a pumping block for receiving the components of the pumping mechanism. [17] The filling mechanism may be a grease barrel detachable from a grease pump comprising the input mechanism and the pumping mechanism, and the grease barrel may comprise a barrel connector coupled to the grease pump and constituting the bottom of the grease barrel, a suction/discharge plate for suctioning or discharging grease, a sealing plate and a packing for preventing leakage of the grease, a grease discharge spring for assisting in discharge of the grease when the grease in the grease barrel is discharged by the pumping mechanism, a filling handle serving as a handle when filling the grease into the grease barrel, a grease barrel cover for guiding the filling handle and covering a body of the grease barrel, the body of the grease barrel made of a transparent material so as to allow an amount of grease to be observed and for containing the grease therein, and a connection pipe assembled to the barrel connector when filling the grease into the grease barrel for assisting in filling of the grease.
[18] Brief Description of the Drawings
[19] The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
[20] Fig. 1 is a schematic cross-sectional view illustrating an operating principle of an automatic lubrication device according to a first embodiment of the present invention equipped to an A-type breaker;
[21] Fig. 2 is a schematic cross-sectional view illustrating an operating principle of an automatic lubrication device according to a first embodiment of the present invention equipped to an B-type breaker;
[22] Fig. 3 is a top view illustrating the automatic lubrication device according to the first embodiment of the present invention;
[23] Fig. 4 is a side view illustrating the automatic lubrication device according to the first embodiment of the present invention;
[24] Fig. 5 is a front view illustrating the automatic lubrication device according to the first embodiment of the present invention;
[25] Fig. 6 is a cross-sectional view taken along line A- A of Fig. 3;
[26] Fig. 7 is a cross-sectional view taken along line B-B of Fig. 6;
[27] Fig. 8 is a cross-sectional view taken along line C-C of Fig. 6;
[28] Fig. 9 shows operation of an input mechanism and a compressing mechanism of a grease pump when the automatic lubrication device according to the first embodiment is equipped to the A-type breaker (Fig. 1);
[29] Fig. 10 shows operation of an input mechanism and a compressing mechanism of a grease pump when the automatic lubrication device according to the first embodiment is equipped to the B-type breaker (Fig. 2); [30] Fig. 11 shows a pumping operation of the compressing mechanism and the pumping mechanism of the automatic lubrication device according to the first embodiment of the present invention; [31] Fig. 12 shows a grease recharging operation of a filling mechanism in the automatic lubrication device according to the first embodiment of the present invention; [32] Fig. 13 is a schematic cross-sectional view illustrating the structure and an operating principle of an automatic lubrication device according to a second embodiment of the present invention; [33] Fig. 14 is a top view illustrating the automatic lubrication device according to the second embodiment of the present invention; [34] Fig. 15 is a side view illustrating the automatic lubrication device according to the second embodiment of the present invention; [35] Fig. 16 is a front view illustrating the automatic lubrication device according to the second embodiment of the present invention; [36] Fig. 17 is a cross-sectional view taken along line A- A of Fig. 15;
[37] Fig. 18 is a cross-sectional view taken along line B-B of Fig. 16;
[38] Fig. 19 is a cross-sectional view taken along line C-C of Fig. 18;
[39] Fig. 20 shows operation of an input mechanism of the automatic lubrication device of the second embodiment by virtue of vibration of the breaker; [40] Fig. 21 shows a pumping operation of a pumping mechanism of the automatic lubrication device according to the second embodiment of the present invention; and [41] Fig. 22 shows a grease recharging operation of a filling mechanism in the automatic lubrication device according to the second embodiment of the present invention. [42]
[43] <Description of Reference Numerals for Main Components of the Drawings>
[44] 1 : input socket 2: input piston
[45] 3: first check ball 4: first check spring
[46] 5: sliding bar 6: second spring
[47] 7: compressing shaft 8a: first clutch bearing
[48] 8b: second clutch bearing 9: body
[49] 10: cover 11 : pumping piston
[50] 12: compression spring 13: pumping housing
[51] 14: housing nut 15: compressing adjustment bolt
[52] 16: first fixing nut 17: second check ball [53] 18: second check spring 19: eject nipple
[54] 20: barrel base 21 : third check ball
[55] 22: third check spring 23: suction/discharge plate
[56] 24: sealing plate 25: sealing member
[57] 26: air discharge spring 27: discharge spring
[58] 28: filling handle 29: second fixing nut
[59] 30: barrel cover 31: barrel body
[60] 101: vibrating ball 102a: first vibrating spring
[61] 102b: second vibrating spring 103: torsion bar
[62] 104a: first clutch bearing 104b: second clutch bearing
[63] 105: pumping shaft 106: pumping piston
[64] 107 : pumping block 108: check ball
[65] 109: check spring 110: nipple
[66] 111: body 112: cover
[67] 113: first cover 114: second cover
[68] 115: barrel connector 116: suction/discharge plate
[69] 117: sealing plate 118: packing
[70] 119: discharge spring 120: filling handle
[71] 121: fixing nut 122: barrel cover
[72] 123: barrel body 124: adjuster
[73] 125: nipple 126: connection pipe
[74] Best Mode for Carrying Out the Invention
[75] Embodiments of the invention will now be described in detail with reference to the accompanying drawings.
[76] Figs. 1 and 2 are circuit diagrams illustrating an operating principle of the present invention. Specifically, Fig. 1 is a circuit diagram illustrating an automatic lubrication device according to a first embodiment of the invention equipped to a breaker which has a piston with a space formed above the piston and communicated to the outside so as to allow air to be freely suctioned or discharged according to vertical movement of the piston within the breaker, and Fig. 2 is a circuit diagram illustrating the automatic lubrication device of the invention equipped to another breaker which has a piston with a space formed above the piston so as to be shielded from the outside and filled with nitrogen gas so that a pressure of the space is changed according to vertical movement of the piston within the breaker.
[77] Figs. 3 to 5 are a top view, a side view and a front view of the automatic lubrication device according to the first embodiment of the invention, respectively. [78] As shown in Figs. 1 to 5, the automatic lubrication device according to the first embodiment of the invention comprises a grease pump P, and a grease barrel T.
[79] The grease pump P comprises an input mechanism (comprising components 1, 2, 3 and 4 in Fig. 7) reciprocating whenever the breaker strikes for transmitting strike and force to a compressing mechanism, the compressing mechanism (comprising components 5, 6, 7, 8a and 8b in Figs. 6 and 7) for converting reciprocation of the input mechanism into rotation and compressing a spring of a pumping mechanism, and the pumping mechanism (see reference numerals 11 to 19 of Fig. 8) compressed by amplified force of the compressing mechanism and ejecting grease in a constant striking period, and these mechanisms are operatively assembled in a body 9 and a cover 10 as shown in Fig. 6.
[80] The input mechanism comprises: an input piston 2 linearly reciprocating in direct conjunction with variation in pressure of gas (air or nitrogen gas) in a space above a piston within the breaker for transmitting the force to the compressing mechanism; a first check ball 3 and a first check spring 4 assembled within the input piston 2, such that the first check ball 3 is opened when the piston is lowered within the breaker and the first check ball 3 is closed when the piston is raised within the breaker, for adjusting a flow direction of the gas; and an input socket 1 serving as a guide for the input piston 2 and as a connection port for connecting the input mechanism to the breaker via a hose.
[81] The compressing mechanism comprises: a sliding bar 5 for converting linear reciprocation of the input mechanism into rotation of a compressing shaft 7; clutch bearings 8a and 8b for converting pivotal movement of the sliding bar 5 into unidirec tional rotation of the compressing shaft 7; the compressing shaft 7 for transmitting pumping force to a pumping piston 11 of the pumping mechanism while rotating in one direction; and a spring 6 for returning the sliding bar 5 to its original position.
[82] The pumping mechanism comprises: the pumping piston 11 for receiving rotational force of the compressing shaft 7 and periodically pumping the grease; a compression spring 12 compressed by the rotational force of the compressing shaft 7 for pushing the pumping piston 11 by use of repulsive force; a second check ball 17 and a second check spring 18 serving as a check valve for generating flow of the grease in one direction; an eject nipple 19 for supplying ejected grease to the requisite components via a hose; a pumping housing 13 serving as a guide for the pumping piston 11 and the compression spring 12; a housing nut 14 for fixing the pumping housing 13; a compression adjusting bolt 15 for adjusting compression force of the compression spring 12 to adjust an ejecting amount of the grease; and a first fixing nut 16 for fixing the compression adjusting bolt 15. Reference numeral 29 indicates a second fixing nut.
[83] The input mechanism, the compressing mechanism, and the pumping mechanism are operatively assembled in the body 9 and the cover 10.
[84] Additionally, the filling mechanism is a grease banel T for filling the grease, which comprises: a barrel base 20 connected to the body 9 of the grease pump P and constituting the bottom of the grease banel T; a third check ball 21 and a third check spring 22 assembled within the banel base 20 for preventing the grease from flowing down when the grease banel is filled with the grease; a suction/discharge plate 23 for suctioning or discharging the grease; a sealing plate 24 and a sealing member 25 for preventing leakage of the grease; an air discharge spring 26 for discharging air between the grease in the grease banel T and the suction/discharge plate 23 after the grease is suctioned; a grease discharge spring 27 for assisting in discharge of the grease when the grease in the grease banel is discharged by the pumping mechanism; a filling handle 28 as a handle of the grease banel T when filling the grease into the grease banel T; a banel cover 30 for guiding the filling handle 28 and covering a banel body 31 ; the banel body 31 made of a transparent material so as to allow an amount of grease to be observed and for containing the grease; and a banel connection pipe 32 (see Fig. 12) assembled to the banel base 20 for assisting in filling of the grease when filling the grease into the grease banel T.
[85] Operation of the automatic lubrication pump constructed as described above according to operating sequence of the respective components of the automatic lubrication pump will be described with reference to the drawings.
[86]
[87] <Operation 1-1>
[88] Fig. 9 is cross-sectional views illustrating sequential operation of the input mechanism and the compressing mechanism of the automatic lubrication pump according to the first embodiment when it is equipped to the A-type breaker which allows air to be freely suctioned into or discharged from the space above the piston within the breaker according to vertical reciprocation of the piston therein.
[89] In Fig. 1, when the piston is raised within the breaker, the space above the piston within the breaker is increased in pressure. Then, compressed air in the space above the piston is supplied to the input mechanism of the automatic lubrication pump through the input socket 1 as indicated by arrow gl of Fig. 9, and pushes the input piston 2 backward, thereby forcing the sliding bar 5 to rotate a predetermined angle in a direction of arrow a. At this time, as the input piston 2 is changed in position and opened, the compressed air is discharged to the outside as indicated by arrow g2 through an air discharge port of the opened input socket 1.
[90] When the piston of the breaker is lowered (that is, when it strikes a chisel), the space above the piston is reduced in pressure, and outer air is then suctioned into the space above the piston through an air intake port as indicated by arrow g3 of Fig. 9. At this time, the input piston 2 and the sliding bar 5 are returned to their original position in an opposite direction as indicated by arrow b by virtue of repulsive force of the second spring 6.
[91]
[92] <Operation l-2>
[93] Fig. 10 is a cross-sectional view illustrating sequential operation of the input mechanism and the compressing mechanism of the automatic lubrication pump according to the first embodiment when it is equipped to the B-type breaker which has the piston with a space formed above the piston so as to be closed within the breaker and filled with nitrogen gas so that the space is compressed when the piston is raised, and repels the piston as the piston is lowered, thereby increasing striking force of the piston.
[94] In Fig. 2, when the piston is raised, the space above the piston within the breaker is increased in pressure. The increased pressure of the gas in the space is applied to the input mechanism of the automatic lubrication pump through the input socket 1 as shown in Fig. 10, and pushes the input piston 2 backward, thereby forcing the sliding bar 5 to rotate a predetermined angle in the direction of arrow a.
[95] When the piston of the breaker is lowered (that is, when it strikes a chisel), the compressed gas in the space above the piston is reduced in pressure, and then the input piston 2 and the sliding bar 5 are returned to their original position in a direction as indicated by arrow b of Fig. 10 by virtue of repulsive force of the second spring 6.
[96] The shape of the input socket 1 having the air intake port and the air discharge port as shown in Figs. 3, 7 and 9 is the same as that of the input socket 1 when the automatic lubrication device of the invention is equipped to the A-type breaker as with <Operation 1-1>. When the automatic lubrication device of the invention is equipped to the B-type breaker as shown in Fig. 2, the input socket 1 is closed as shown in Fig. 10 so that nitrogen gas is not leaked from the space above the piston, and applies the pressure to the input mechanism.
[97]
[98] <Operation 2>
[99] By Operation 1-1 and Operation 1-2, as the pivotal movement of the sliding bar 5 is repeated in such a manner that the sliding bar 5 is rotated at the predetermined angle in the direction of the arrow a and is then rotated at the same amount in the opposite direction as indicated by the arrow b, the first clutch bearing 8a simultaneously transmits the pivotal movement and force of the sliding bar 5 to the compressing shaft 7 only in a direction of arrow al. Accordingly, the compressing shaft 7 is rotated at a constant angle in the direction of the arrow al, and stops rotating by means of the second clutch bearing 8b when the sliding bar 5 is rotated in the opposite direction. [100] For example, if the sliding bar 5 is pivoted at an angle of 4° according to a reciprocating stroke of the input piston 2, the compressing shaft 7 rotates one time when the input piston 2 reciprocates 90 times (36074° = 90). In other words, when the piston of the breaker strikes the chisel 90 times, the compressing shaft 7 rotates one time.
[101]
[102] <Operation 3>
[103] Fig. 11 shows sequential operation of pumping the grease according to the rotation of the compressing shaft 7.
[104] As with Operation 2, when the compressing shaft 7 rotating in a constant period compresses the pumping piston 11, and finally rotates at the constant angle to a state shown in Fig. 11, the pumping piston pumps the grease in a direction of arrow c by virtue of repulsive force of the compression spring 12.
[105]
[ 106] <Operation 4>
[107] While Operations 1 to 3 as described above are repeated, a constant amount of grease is ejected to the requisite components in a constant striking period of the breaker.
[108] For example, as illustrated in Operation 2, assuming that the sliding bar 5 has a pivot angle of 4°, and the pumping piston 11 has a pumping cross-sectional area of 0.5 D and a pumping stroke of 0.4 D, the automatic lubrication device of the invention supplies the grease in an amount of 0.2 cc to the requisite components in a period of 90 strikes by the breaker.
[109]
[110] <Operation 5>
[111] Fig. 12 shows sequential operation of recharging the grease into the grease barrel T. When it is determined by observation through the transparent barrel body 31 that most of the grease is consumed, the grease barrel T is separated from the grease pump P. Then, the grease barrel T is assembled to the connection pipe 32 as shown at the left side of Fig. 12, and is filled with the grease by suctioning the grease through the connection pipe 32 as shown in the middle of Fig. 12. The suctioned grease is prevented from being discharged to the outside by means of the third check ball 21 and the third check spring 22 of the barrel base 20. At this time, when the filling handle 28 is pushed in a direction of d after the grease is suctioned, the air discharge spring 26 pushes the sealing member 25, and creates a gap between the sealing member 25 and the suction/discharge plate 23 so that air in the upper portion of the grease barrel T is discharged to the outside through the gap as indicated by arrow g6 of Fig. 12.
[112] After filling the grease into the grease barrel T, the filling handle 28 is pushed into the grease barrel T, and the grease barrel T is reassembled to the grease pump P. At this time, even though the filling handle 28 is pushed into the grease barrel T, since the sealing plate 24 is pushed upward by pressure of the grease such that the sealing plate 24 and the sealing member 25 are brought into intimate contact with the suction/ discharge plate 23, thereby preventing the grease from being leaked.
[113] Fig. 13 is a schematic cross-sectional view illustrating the structure and an operating principle of an automatic lubrication device according to a second embodiment of the invention. Figs. 14 to 16 are a top view, a side view, and a front view illustrating the automatic lubrication device according to the second embodiment of the invention, respectively. Figs. 17, 18 and 19 are cross-sectional views taken along line A-A of Fig. 15, line B-B of Fig. 16, and line C-C of Fig. 18, respectively.
[114] As shown in Figs. 13 to 19, the automatic lubrication device according to the second embodiment of the invention comprises a grease pump P which includes an input mechanism and a pumping mechanism, and a grease barrel T which acts as a filling mechanism.
[115] The grease pump P comprises the input mechanism (comprising components 101, 102a and 102b) vertically reciprocating by virtue of vibration of the breaker occuning whenever a piston of the breaker strikes a chisel, and a pumping mechanism ( comprising components 103, 104a, 105, 106, 107, 108, 109 and 110) for converting vertical reciprocation of the input mechanism into unidirectional rotation and converting the unidirectional rotation into reciprocation in order to pump the grease in a constant striking period, and these mechanisms are operatively assembled in a body 111 and a cover 112.
[116] The input mechanism comprises a vibrating ball 101 vertically reciprocating in conjunction with the vibration of the breaker, and first and second vibrating springs 102a and 102b.
[117] The pumping mechanism comprises a torsion bar 103 for converting the vertical reciprocation of the vibrating ball 101 into the rotation and amplifying force, a pair of first and second clutch bearings 104a and 104b for transmitting rotational force of the torsion bar 103 to a pumping shaft 105 only in one direction, the pumping shaft 105 for transmitting the rotational force of the torsion bar 103 to a pumping piston 106, a pumping piston 106 reciprocating by virtue of the rotational force of the pumping shaft 105 for periodically pumping the grease, a check valve including a check ball 108 and a check spring 109 for creating unidirectional flow of the grease, a nipple 110 for supplying ejected grease to the requisite components via a hose, and a pumping block 107 for operatively combining the above members.
[118] The torsion bar 103 and the pumping shaft 105 are coupled to each other while being supported by means of the pair of clutch bearings 104a and 104b, which converts vibration of the torsion bar 103 caused by vertical reciprocation of the vibrating ball 101 into the unidirectional rotation of the pumping shaft 105. This is constructed by employing a well known click and ratchet wheel structure, in which the clutch bearings 104a and 104b transmit the vibration of the torsion bar to the pumping shaft 105 only in one direction to rotate the pumping shaft 105 in one direction while preventing reverse rotation of the pumping shaft 105.
[119] The pumping shaft 105 and the pumping piston 106 are constructed by employing a well-known slider crank mechanism which converts rotation into linear reciprocation. Specifically, as the pumping shaft 105 rotates with an eccentric shaft attached to the pumping shaft 105 and fitted into a slot formed at a rear end of the pumping piston 106, the eccentric shaft slides in the slot to linearly reciprocate the pumping piston.
[120] Meanwhile, the input mechanism and the pumping mechanism are operatively assembled within the body 111 and the cover 112 of the grease pump P, which is equipped to an outer surface of the hydraulic breaker by means of bolts and nuts such that the grease pump P is aligned with operating direction of the piston within the hydraulic breaker.
[121] The filling mechanism is a grease barrel T, which comprises a banel connector 115 coupled to the grease pump P and constituting the bottom of the grease barrel T, a suction/discharge plate 116 for suctioning or discharging grease, a sealing plate 117 and a packing 118 for preventing leakage of the grease, a grease discharge spring 119 for assisting in discharge of the grease when the grease in the grease barrel is discharged by the pumping mechanism, a filling handle 120 serving as a handle when filling the grease into the grease barrel T, a grease barrel cover 122 for guiding the filling handle 120 and covering a barrel body 123 of the grease barrel T, the banel body 123 being made of a transparent material so as to allow an amount of grease to be observed and for containing the grease therein, and a connection pipe 126 assembled to the barrel connector 115 when filling the grease into the grease banel T for assisting in filling of the grease.
[122] Meanwhile, reference numeral 124 indicates an adjustor for adjusting an ejecting amount of grease, and reference numeral 125 indicates a nipple for injecting the grease into the device at an initial time for smooth operation of the automatic lubrication device. Reference numerals 113, 114, 121, and 122 indicate a first cover, a second cover, a fixing nut, and a banel cover, respectively.
[123] Operation of the automatic lubrication pump constructed as described above according to an operating sequence of the respective components of the automatic lubrication pump will be described with reference to drawings.
[124]
[125] <Operation 1> [126] Fig. 20 shows sequential operation of the input mechanism of the automatic lubrication device of the second embodiment according to vibration of the breaker. The vibration of the breaker occurs whenever the breaker strikes, and at this time, the vibrating ball 101 of the input mechanism vibrates in an opposite direction of the vibration of the breaker by virtue of inertial force.
[127] Such vertical reciprocation of the vibrating ball 101 causes the torsion bar 103 to pivot at a predetermined angle about the center of the pumping shaft 105 in left and right directions, and the pivotal movement of the torsion bar 103 forces the first and second clutch bearings 104a and 104b to rotate the pumping shaft 105 in one direction.
[128]
[129] <Operation 2>
[130] Fig. 21 shows sequential operation of pumping the grease according to the rotation of the pumping shaft 105.
[131] As described in Operation 1, whenever the breaker strikes (that is, whenever the breaker vibrates), the pumping shaft 105 rotates, as shown in Fig. 18, and forces the pumping piston 106 to rotate and pump the grease.
[132]
[133] <Operation 3>
[134] Fig. 22 shows sequential operation of recharging the grease into the grease barrel. When it is determined by observation through the transparent barrel body 123 that most of the grease is consumed, the grease barrel T is separated from the grease pump P. Then, the grease barrel T is assembled to the connection pipe 126 as shown at the left side of Fig. 22, and is filled with the grease by suctioning the grease through the connection pipe 32 as shown in the middle of Fig. 22. Since the suctioned grease has a high viscosity, it is prevented from being discharged downward to the outside, and air in an upper portion of the grease barrel T is discharged to the outside as indicated by arrow g6 of Fig. 22. At this time, the packing 118 prevents the grease from being discharged to the outside.
[135] After filling the grease into the grease barrel T, the filling handle 120 is pushed into the grease barrel T, and the grease barrel T is reassembled to the grease pump P. At this time, even though the filling handle 120 is pushed into the grease barrel T, since the sealing plate 117 and the packing 118 are brought into intimate contact with the suction/discharge plate 116, thereby preventing the grease from being leaked.
[136] Industrial Applicability
[137] As apparent from the above description, the automatic lubrication device of the invention is operated depending on the number of strikes by the breaker, and thus supplies the grease into the requisite components of the breaker in a proper time and in a proper amount, thereby eliminating burdensome operation of periodically filling the grease by an operator, reducing environmental contamination, and extending the life of the breaker. Moreover, the grease container (grease banel) is repeatedly used after being recharged, thereby permitting lubrication of the breaker with a lower lubrication cost in comparison to the breaker using a disposable grease container. Although the prefened embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

Claims
[1] An automatic lubrication device equipped to a hydraulic breaker to automatically supply grease to requisite components according to a constant striking period by the breaker, the automatic lubrication device comprising an input mechanism linearly reciprocating whenever the breaker strikes for transmitting strike and force to a compressing mechanism, the compressing mechanism for converting linear reciprocation of the input mechanism into rotation and compressing a spring of a pumping mechanism, the pumping mechanism compressed by amplified force of the compressing mechanism and pumping the grease in the constant striking period of the breaker, and a grease barrel for supplying the grease to the pumping mechanism while containing the grease, wherein the input mechanism comprises: an input piston 2 linearly moved in direct conjunction with variation in gaseous (air or nitrogen gas) pressure in a space above a piston within the breaker for transmitting the force to the compressing mechanism; a first check ball 3 and a first check spring 4 assembled within the input piston 2, such that the first check ball opens the piston when the piston is lowered within the breaker, and such that the first check ball closes the piston when the piston is raised within the breaker, for adjusting a flow direction of the gas; and an input socket 1 serving as a guide for the input piston 2 and as a connection port for connecting the input mechanism to the breaker via a hose, wherein the compressing mechanism comprises: a sliding bar 5 for converting the linear reciprocation of the input mechanism into rotation of a compressing shaft 7; clutch bearings 8a and 8b for converting a pivotal movement of the sliding bar 5 into unidirectional rotation of the compressing shaft 7; the compressing shaft 7 for transmitting pumping force to a pumping piston of the pumping mechanism while rotating in the one direction; and a spring 6 for returning the sliding bar 5 to its original position, and transmits compressing force to the pumping mechanism in a constant striking period by the breaker, wherein the pumping mechanism comprises: the pumping piston 11 for receiving rotational force of the compressing shaft 7 and periodically pumping the grease; a compression spring 12 compressed by the rotational force of the compressing shaft 7 for pushing the pumping piston 11 by use of repulsive force; a second check ball 17 and a second check spring 18 serving as a check valve for generating unidirectional flow of the grease; an eject nipple 19 for supplying ejected grease to the requisite components via a hose; a pumping housing 13 serving as a guide for the pumping piston 11 and the compression spring 12; a housing nut 14 for fixing the pumping housing 13; a compression adjusting bolt 15 for adjusting compression force of the compression spring 12 to adjust an ejecting amount of the grease; and a fixing nut 16 for fixing the compression adjusting bolt 15, and wherein the grease banel comprises: a banel base 20 connected to the pumping mechanism and constituting the bottom of the grease banel; a third check ball 21 and a third check spring 22 assembled within the banel base 20 for preventing the grease from flowing down when the grease banel is filled with the grease; a suction/discharge plate 23 for suctioning or discharging the grease; a sealing plate 24 and a sealing member 25 for preventing leakage of the grease; an air discharge spring 26 for discharging air between the grease in the grease barrel 20 and the suction/discharge plate 23 after the grease is suctioned; a grease discharge spring 27 for assisting in discharge of the grease when the grease in the grease barrel is discharged by the pumping mechanism; a filling handle 28 serving as a handle of the grease barrel when filling the grease into the grease barrel; a banel cover 30 for guiding the filling handle 28 and covering a barrel body; the banel body 31 being made of a transparent material so as to allow an amount of grease to be observed and for containing the grease; and a banel connection pipe 32 assembled to the banel base 20 for assisting in filling of the grease when filling the grease into the grease banel. [2] An automatic lubrication device equipped to a hydraulic breaker to automatically supply grease to requisite components according to a constant striking period by the breaker, and comprising a grease pump and a grease barrel, wherein the grease pump comprises: an input mechanism comprising a vibrating ball 101 vertically reciprocating by virtue of vibration of the breaker occurring whenever the breaker strikes, and first and second vibrating springs 102a and 102b disposed at upper and lower portions of the vibrating ball 101, respectively; and a pumping mechanism for converting vertical reciprocation of the input mechanism into rotation while converting the rotation into reciprocation in order to pump the grease, and comprising a torsion bar 103 for converting vertical reciprocation of the vibrating ball 101 into pivotal movement at a predetermined angle and for amplifying force, first and second clutch bearings 104a and 104b for transmitting rotational force of the torsion bar 103 only in one direction, a pumping shaft 105 rotating in one direction by the first and second clutch bearings 104a and 104b, a pumping piston 106 reciprocating by virtue of rotational force of the pumping shaft 105 for periodically pumping the grease, a check ball 108 and a check spring 109 serving as a check valve for generating unidirectional flow of the grease, a nipple 110 for supplying ejected grease to the requisite components via a hose, and a pumping block 107 for receiving the torsion bar, the first and second clutch bearings, the pumping shaft, the pumping piston, the check ball and check spring, and the nipple.
PCT/KR2005/000673 2004-03-17 2005-03-10 An auto lubrication device for hydraulic breaker WO2005124093A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR10-2004-0018195 2004-03-17
KR1020040018195A KR100460984B1 (en) 2004-03-17 2004-03-17 An Auto Lubrication Device for Hydraulic Breaker
KR10-2004-0037595 2004-05-25
KR1020040037595A KR100460985B1 (en) 2004-05-25 2004-05-25 An Auto Lubrication Device for Hydraulic Breaker

Publications (1)

Publication Number Publication Date
WO2005124093A1 true WO2005124093A1 (en) 2005-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2005/000673 WO2005124093A1 (en) 2004-03-17 2005-03-10 An auto lubrication device for hydraulic breaker

Country Status (1)

Country Link
WO (1) WO2005124093A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2039977A2 (en) 2007-09-14 2009-03-25 Atlas Copco Construction Tools GmbH Lubricant pump
CN108342970A (en) * 2016-05-31 2018-07-31 泉州台商投资区铭源机械设备有限公司 A kind of drill steel triggering quartering hammer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6109372A (en) * 1999-03-15 2000-08-29 Schlumberger Technology Corporation Rotary steerable well drilling system utilizing hydraulic servo-loop
KR20040015653A (en) * 2002-08-13 2004-02-19 이기호 An Auto Lubrication Device for Hydraulic Construction Equipment
KR20040021008A (en) * 2002-09-02 2004-03-10 대모 엔지니어링 주식회사 Auto lubricating device for breaker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6109372A (en) * 1999-03-15 2000-08-29 Schlumberger Technology Corporation Rotary steerable well drilling system utilizing hydraulic servo-loop
KR20040015653A (en) * 2002-08-13 2004-02-19 이기호 An Auto Lubrication Device for Hydraulic Construction Equipment
KR20040021008A (en) * 2002-09-02 2004-03-10 대모 엔지니어링 주식회사 Auto lubricating device for breaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2039977A2 (en) 2007-09-14 2009-03-25 Atlas Copco Construction Tools GmbH Lubricant pump
CN108342970A (en) * 2016-05-31 2018-07-31 泉州台商投资区铭源机械设备有限公司 A kind of drill steel triggering quartering hammer
CN108342970B (en) * 2016-05-31 2020-06-16 台州贝力特机械有限公司 Drill rod triggering breaking hammer

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