WO1991008352A1 - Axe de jonction pour bras articule de machine de chantier - Google Patents

Axe de jonction pour bras articule de machine de chantier Download PDF

Info

Publication number
WO1991008352A1
WO1991008352A1 PCT/JP1990/001565 JP9001565W WO9108352A1 WO 1991008352 A1 WO1991008352 A1 WO 1991008352A1 JP 9001565 W JP9001565 W JP 9001565W WO 9108352 A1 WO9108352 A1 WO 9108352A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
groove
elastic ring
link
pin
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP1990/001565
Other languages
English (en)
Japanese (ja)
Inventor
Hikosaburo Hiraki
Kazuhiro Yoshida
Akio Ota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 claimed from JP13935789U external-priority patent/JPH0745645Y2/ja
Priority claimed from JP2651590U external-priority patent/JPH0756366Y2/ja
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Publication of WO1991008352A1 publication Critical patent/WO1991008352A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/006—Pivot joint assemblies
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/045—Pivotal connections with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2350/00—Machines or articles related to building
    • F16C2350/26—Excavators

Definitions

  • the present invention relates to a coupling pin device for a working machine link that swings and holds a working machine such as a construction machine.
  • the construction machine for example, the working machine of hydraulic excavator, consists of parts such as boom, arm, baguette, etc.
  • a connecting pin device is provided in order to work in various postures.
  • Fig. 12 is a side view of these parts and equipment.
  • Arm 80 and bucket 81, and bucket 01 and tilt ⁇ ' One end of each of the nodes 82 is connected to the bin device 84, respectively.
  • One end of 83, and the other end of the tilt rod 82, the tip of the nozzle 83, and the opening 89 of the cylinder 88 are connected to the other pin mountings, respectively. Connect them at positions 86 and 87.
  • the rod 89 is expanded or contracted, the bucket 81 swings around the bin device 84, as an axis.
  • the pin devices 84 and 85 will be described in more detail with reference to FIG. 13 showing a cross section taken along line AA of FIG.
  • a groove 20 is provided between the opposing end faces 6 la and 60 a of the pin bos 60 of the arm 80 (or the tilt rod 82), and the cutting elastic ring 2 is formed. Insert 2.
  • a screw is attached to the bolt 101 of the socket 81 R, and the spacer 100 is connected to the bolt 64 through the fixed plate 102.
  • pin devices 86 and 87 will be described in more detail with reference to FIG. 14 showing a cross section taken along line BB of FIG.
  • the chitrenno is a pair of spaced links 83R and 83L, and the pins are located at the coaxial center positions of these link ends.
  • a cylindrical bimbo 70 provided at the front end of the arm 80 is fitted.
  • a bush 71 is fitted into the pin boss 70. Align the pin holes of these pin bosses 73R, 73L and bush 71, and insert the pins 75 into them.
  • One end of this pin 75 is fixed to pin 73R at the link end by bolt 74.
  • the armature 80 is linked to the tiltreno, 183R and 84L.
  • the inner diameter of the pin bos 73R, 73L and bush 71 will be described. Because the diameter is larger than the outer diameter of pin 75, there is a gap (play) in the radius direction R. Also, when the pin 70 of the arm 80 is inserted between the binbos 73R and 73L, the processing and assembly of these parts are performed. The inner width between the pin bosses 73R and 73L should be larger than the outer width of the pin boss 70 so that they do not interfere with each other. As a result, there is a gap in the axial direction S.
  • the present invention has been made with a focus on the above-mentioned problems, and the durability of the elastic ring at the pin joint of the working machine link has been improved.
  • the gaps in the radial direction and the axial direction of the bin joint portion are eliminated, and the inertial movement in the rotational direction is suppressed.
  • the purpose of this is to prevent noise from being generated and to provide a coupling pin device for the working machine link that stops the shaking in a short time. . Disclosure of light
  • the present invention relates to the construction of a link of a work equipment link such as a construction machine, etc., in which the pin of one of the links to be joined by the pin and the other are combined.
  • a V-shaped groove is provided between the opposite end faces of the link and the pin boss, and the ring body and the sliding material are provided on the inner peripheral side of the ring body.
  • the inner member formed by coating the urethane is connected to the inner member, and the outer member is connected to the outer member, and the other end is in contact with the groove.
  • a pair of lip members that cooperate with each other so that the urethane is cooperated, and urethane is inserted into the opening that opens when the ring body is mounted.
  • the coating When the coating is provided, it is equipped with a power bar member, and the ring body and a resilient ring formed by molding these members.
  • the ⁇ side member of the integrally formed elastic ring has a plate member made of urethane that is coated in the center of the ring. It is good to have. With such a structure, the ring body is covered by perimeter, so the part where the earth and sand are easy to enter is especially In this case, the endurance of the resilient ring is improved, and the tension is not impaired.
  • This elastic ring is a non-metallic elastic It is a ring, and a metal elastic ring may be buried inside it.
  • this elastic ring has a grease escape groove on the V-shaped forming surface on the inner peripheral side, and a ring for dust intrusion prevention on the outer peripheral side. You may set up a tip. According to this configuration, when a force in the axial direction S is applied to the opposite end face of the pin boss, the elastic ring receives the force from the V-shaped groove.
  • FIG. 1 is a plan view of the elastic ring according to the first embodiment of the present invention
  • FIG. 2 is a sectional view of a side surface of FIG. 1
  • FIG. 3 is a view of FIG. Fig. 4 is a cross-sectional view when the elastic ring according to the second embodiment of the present invention is mounted on a binbos.
  • Fig. 5 is a cross-sectional view of the bonding pin device according to the third embodiment of the present invention.
  • Fig. 6 is an enlarged cross-sectional view of the V-shaped groove in Fig. 5, and Fig. 7. Is an enlarged sectional view of the elastic ring according to the third embodiment of the present invention
  • FIG. 8 is a perspective view of the elastic ring, and FIG.
  • FIG. 9 is an elastic ring of FIG. Fig. 10 is a cross-sectional view of the first stage when the ring is mounted on the bin bom.
  • Fig. 10 shows the elastic ring shown in Fig. 7 mounted on the bin bom.
  • Fig. 11 is a cross-sectional view of the second stage when it is attached.
  • Fig. 11 is a cross-sectional view of the elastic ring shown in Fig. 7 when the elastic ring is completely attached to the pin boss.
  • FIG. 13 is a side view of the working machine and the connecting pin device used therein, and FIG. 13 is an enlarged sectional view of the conventional connecting pin device taken along the line A—A in FIG. Fig. 4 is an enlarged cross-sectional view of the conventional coupling bin shown in Fig. 12 taken along the line B-B.
  • FIG. 1 A groove 20 formed in the shape of a tenon, ′, with two pinbos 61, 60 having inclined bevels 61, 60 b of the same angle facing each other, An auxiliary elastic ring 10 is attached so as to prevent backlash in the axial direction S and the radial direction R of both of the binboths 61 and 60. ⁇ An inner member 3 coated with urethane as a sliding material is provided on the circumference of the ring main body 2 of the elastic ring 10, and the ring is provided.
  • a pair of lip members 4 each of which is formed of a pair of dents, is attached to a groove 21 (specifically, an inclined chamfer 6 lb, 60 b). They are set up so that they can touch each other.
  • an opening cover member 6 is provided in which the urethane is coated at the part where the opening 5 opens.
  • the ring main body 2 and these members are formed integrally, and as a viscoelastic ring 10, is sandwiched between two pinbos 61, 60 and mounted. Wearing.
  • a plurality of grease escape grooves 7 are provided in a part of the inner member 3 to lubricate the grooves 20.
  • the pair of lip members 4 prevent intrusion of earth and sand from the groove 20.
  • the mouth cover member 6 prevents intrusion of earth and sand from the opening of the mouth 5.
  • the coating of the mating cover member 6 is not limited to the opening of the mating portion 5, but the entire outer peripheral side of the ring body 2 is covered. You can set it up as you like.
  • the load larger than the load F s in the axial direction S of the pin 65 by the ring body 2 due to the axial force S is considered as an external force or worrisome force.
  • the end faces 61 a and 60 a of the pin bosses 61 and 60 are in metal contact, and the noise force s is generated.
  • the inner member 3 of the rigid ring 10 is extended to the vicinity of the bin 65 to form a disk-shaped bracket member 8. Are formed so as to maintain an appropriate gap between each of the pin bosses 61 and 60. This prevents the end faces 61a and 60a from making metal contact.
  • FIG. Fig. 5 shows the line B-B in Fig. 12
  • the tilt lever 83 is a pair of spaced apart links 83 R, 83 L, and these links 83 R, 83 L Pins 42R and 42L for fitting the pins 45 to one end of the cable are provided, and between these binbos 42R and 42L.
  • the cylindrical pinbos 70 provided at the end of the arm 80 are inserted.
  • a bush 71 is fitted in 0. Align the pin holes of the pin bosses 42 R, 42 L and the bush 71, and insert the pin 45 with the plate 43 attached to one end.
  • a grease nipple 46 for lined fat is attached to pin 45.
  • the fitting between the pin holes of the pin bosses 42 R, 42 L and the bush 71 and the pins 45 has a dimensional relationship with a gap for ease of assembly. There is a gap in the radial direction R.
  • An adjustment bolt 49 is attached to the other end of the pin 45 via a plate 47, and a plate 47 is attached to the pin boss 42R. It is fixed by 8. The distance between the pin bosses 42 R and 42 L can be adjusted by adjusting the screwing of the adjustment bolt 49.
  • FIG. 6 is an enlarged cross-sectional view of the V-shaped forming portion 40.
  • the V-shaped forming surface 4 which applies thrust in the axial direction S and the radial direction R is provided on the facing end faces 42a and 70a.
  • 2b, 70b are provided, and the outer peripheral side of each of the pin bosses 42R, 42L, 0 has a facing end face.
  • the parallel planes 4 2 a and 70 c are set parallel to 42 a and 70 a o
  • Fig. 5 is a cross-sectional view of the elastic ring 30.
  • a V-shape is formed around the periphery of the main body 31 of the elastic non-metallic material such as rubber.
  • a surface 32 is formed including a pair of protrusions 33, and a pair of lips 34 is provided above these.
  • the V-shaped forming surface 32 is provided with one or more grease escape grooves 35. This groove 35 is unnecessary when the bush 71 is of a non-lubricated type.
  • the ring main body 31 is formed by cutting a part of a spiral shape as shown in FIG. 8, for example, a resilient metal material such as a steel bar or the like. Shape members 36 are buried.
  • the angle Y formed by the V-shaped forming surface 32 of the elastic ring 30 is the V-shaped forming surface of the pin bos 42 L (42 R) and 70 shown in FIG. 4 2b and 70b have an angle greater than X (Y> X).
  • the width W of the pair of protrusions 33 of the elastic ring 30 is equal to the width of the outer circumferential parallel surface 42 c, 70 (of the binbos 42 L, 70). Is wider, and is in contact with the V-shaped forming surfaces 42b, 70b of the pin bos 42L, 70 (L1> W).
  • a force F 1 is applied to the pin bosses 42 L (42 R) and 70 in the axial direction S by the tightening bolts 49.
  • the vicinity of the protrusion 33 is pressed by the V-shaped surfaces 42 b and 70 b and deformed, and the V-shaped surfaces 42 b and 70 b are deformed by the elastic force.
  • a force T 1 is generated.
  • the angle Y of the V-shaped forming surface 32 of the elastic ring 30 is the angle X of the V-shaped forming surfaces 42 b, 70 b of the binbos 42 L, 70. Since it is larger (Y> X), the amount of deformation in the vicinity of the protrusion 33 becomes large, and a large elastic force is generated.
  • the elastic ring 30 is also deformed in the radial direction R.
  • the elastic elastic member 36 When the elastic elastic member 36 is embedded in this, the member 36 also expands in the radial direction R. As a result, an elastic reaction force is generated, and the elastic ring 30 as a whole has a strong force T 1 against the V-shaped surfaces 42 b, 70 Ob of the pin bos 42 L, 70. Will occur.
  • the passage P is maintained, and the corner of the rib 34 is provided with a pin boss 42 L ( It is in contact with the outer peripheral parallel surface 42c, 70c of 42R), 70 to prevent intrusion of earth and sand from the outside.
  • ⁇ If the tension of the sex ring 30 is reduced due to wear or cleavage, tighten the bolts 48 to adjust the tension.
  • the rattling of the axial direction S at the coupling pin portion is eliminated, and the rattling sound is eliminated. Can be erased.
  • the centering operation is performed by the elasticity of the elastic ring 30, and the vibration due to the backlash is suppressed to reduce the vibration due to the backlash.
  • the sound can be turned off. Fluctuations caused by inertia in the direction of rotation of the work machine can be stopped in a short time by friction resistance. Since the elastic ring-shaped member 36 is embedded in the elastic ring 30, a large elastic force can be obtained with a small space.
  • Industrial availability The present invention is directed to improving the durability of an elastic ring to be attached to a pin connection portion of a working machine such as a construction machine, and improving the radial and axial clearance of the pin connection portion. Therefore, it is useful as a connecting pin device for a working machine link that suppresses inertial motion in the direction of face turning.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

L'invention se rapporte à un axe de jonction pour bras articulé de machine de chantier, qui permet d'améliorer la durabilité d'une bague élastique rigide destinée à être montée sur une partie d'articulation à axe et qui empêche l'apparition de bruit en éliminant le jeu entre la bague et la partie d'articulation à axe. Un tel dispositif comprend une rainure en V, formée entre les surfaces terminales opposées des bossages de l'axe, un corps principal de bague (2), un élément interne (3) dont la phase périphérique interne est enduite d'uréthane, une paire de lèvres (4) dont la face périphérique externe est enduite d'uréthane, de façon à ce qu'elle vienne en contact avec la rainure, ainsi qu'un élément couvrant à partie d'assemblage (6) dont la partie d'assemblage est enduite d'uréthane. Une bague élastique rigide (10), qu'on obtient en moulant en une seule pièce le corps principal de la bague et les éléments décrit ci-dessus est ajustée dans la fente. Une surface moulée en V (32) est formée sur la face périphérique interne de la bague élastique (30), de façon à s'adapter à la fente, et la bague élastique dont l'angle (Y) sur la surface moulée en V est supérieure à l'angle (X) de la fente est ajustée dans la fente.
PCT/JP1990/001565 1989-11-30 1990-11-30 Axe de jonction pour bras articule de machine de chantier Ceased WO1991008352A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1/139357U 1989-11-30
JP13935789U JPH0745645Y2 (ja) 1989-11-30 1989-11-30 ガタ防止用剛弾性リング
JP2651590U JPH0756366Y2 (ja) 1990-03-14 1990-03-14 作業機リンクの結合ピン装置
JP2/26515U 1990-03-14

Publications (1)

Publication Number Publication Date
WO1991008352A1 true WO1991008352A1 (fr) 1991-06-13

Family

ID=26364300

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/001565 Ceased WO1991008352A1 (fr) 1989-11-30 1990-11-30 Axe de jonction pour bras articule de machine de chantier

Country Status (1)

Country Link
WO (1) WO1991008352A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921772Y1 (fr) * 1970-06-15 1974-06-11
JPS5922359U (ja) * 1982-08-04 1984-02-10 株式会社小松製作所 枢支連結部のシ−ル装置
JPS6197619U (fr) * 1984-12-03 1986-06-23
JPS6238051Y2 (fr) * 1983-04-27 1987-09-29

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921772Y1 (fr) * 1970-06-15 1974-06-11
JPS5922359U (ja) * 1982-08-04 1984-02-10 株式会社小松製作所 枢支連結部のシ−ル装置
JPS6238051Y2 (fr) * 1983-04-27 1987-09-29
JPS6197619U (fr) * 1984-12-03 1986-06-23

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