WO2015199082A1 - クイックカプラ - Google Patents
クイックカプラ Download PDFInfo
- Publication number
- WO2015199082A1 WO2015199082A1 PCT/JP2015/068062 JP2015068062W WO2015199082A1 WO 2015199082 A1 WO2015199082 A1 WO 2015199082A1 JP 2015068062 W JP2015068062 W JP 2015068062W WO 2015199082 A1 WO2015199082 A1 WO 2015199082A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lock
- hydraulic cylinder
- hook
- connecting pin
- pin
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3618—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with two separating hooks
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3645—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with auto-engagement means for automatic snap-on of the tool coupler part
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
Definitions
- the present invention relates to a quick coupler.
- a quick coupler is known as a component for easily attaching such an attachment to a work vehicle.
- the quick coupler is attached to the work vehicle.
- a quick coupler has a fixed hook and a movable hook, and these hooks engage with two pins provided on the attachment, whereby the attachment becomes a quick coupler. Connected.
- a lock member for preventing the pin from coming off from the hook is provided.
- a lock pin is inserted into a boss provided on a movable hook, thereby preventing the pin from coming off from the hook.
- An object of the present invention is to provide a quick coupler capable of automatically releasing and operating a retaining function by a lock member when an attachment is attached or detached.
- the quick coupler includes a coupler main body, a movable member, a hydraulic cylinder, a second connecting pin, a second lock member, and an urging member.
- the coupler body has a first hook.
- the movable member has a second hook and is movably supported with respect to the coupler main body.
- the hydraulic cylinder has a first end connected to the coupler main body and a second end connected to the movable member. The hydraulic cylinder moves to move the movable member so that the second hook is separated from the first hook.
- the hydraulic cylinder moves the movable member so that the second hook approaches the first hook by contracting.
- the second connecting pin connects the second end of the hydraulic cylinder and the movable member.
- the second lock member is provided to be movable between a lock-on position and a lock-off position.
- the second lock member projects into the opening of the second hook at the lock-on position.
- the second lock member is in a state of being retracted from the lock-on position at the lock-on position.
- the biasing member biases the second lock member toward the lock-on position.
- the movable member has a second support hole.
- the second support hole movably supports the second connecting pin between the lock release position and the lock operation position along the expansion / contraction direction of the hydraulic cylinder.
- the second connecting pin moves from the unlocked position to the locked operating position.
- the second lock member has a guide hole disposed so as to overlap the second support hole. The second connecting pin is inserted into the second support hole and the guide hole.
- the edge of the guide hole has a first contact portion, a second contact portion, and a guide portion.
- the first contact portion contacts the second connection pin in a state where the second connection pin is located at the lock operation position.
- the second contact portion contacts the second connection pin in a state where the second connection pin is located at the unlock position.
- the guide portion extends between the first contact portion and the second contact portion in a direction that intersects the moving direction of the second connecting pin. The guide portion is pressed by the second connecting pin that moves from the lock operation position to the lock release position, thereby moving the second lock member from the lock-on position to the lock-off position against the urging force of the urging member.
- the quick coupler when the hydraulic cylinder extends, the second end of the hydraulic cylinder moves away from the first end. As a result, the second hook moves away from the first hook. As a result, each of the first hook and the second hook is locked to the pin of the attachment, and the attachment is attached to the quick coupler.
- the second connecting pin moves from the unlocked position to the locked operating position.
- the second lock member moves from the lock-off position to the lock-on position by the biasing force of the biasing member.
- the retaining function by the second lock member automatically acts.
- the second support hole is a long hole extending along the expansion / contraction direction of the hydraulic cylinder.
- the second end portion can move in the expansion / contraction direction of the hydraulic cylinder along the elongated hole, thereby allowing the second locking member to function as a retaining member. For this reason, the structure of the quick coupler can be simplified.
- the second lock member is supported by the movable member so as to be rotatable between a lock-on position and a lock-off position.
- the second lock member can be supported with a simple structure.
- the edge of the guide hole has a first corner, a second corner, a third corner, a first connection, a second connection, and a third connection.
- the first corner includes a first contact portion.
- the second corner includes a second contact portion.
- the third corner is disposed in the moving direction of the second lock member with respect to the first corner.
- the first connection part includes a guide part and connects the first corner part and the second corner part.
- the second connection portion connects the second corner portion and the third corner portion.
- the third connection portion connects the third corner portion and the first corner portion.
- the second lock member can be interlocked with the operation of the second connecting pin with a simple structure.
- the third corner portion of the guide hole is positioned at the lock operation position so that the second lock member can move from the lock-on position to the lock-off position in a state where the second connecting pin is positioned at the lock operation position. It arrange
- the second lock member can move from the lock-on position to the lock-off position even if the second connecting pin is located at the lock operation position. Accordingly, the second lock member is moved from the lock-on position to the lock-off position against the urging force of the urging member by pressing the attachment pin against the second lock member from the outside of the opening of the second hook. be able to. Thereby, even if the 2nd lock member is located in a lock on position, the pin of an attachment can be inserted in the opening of the 2nd hook.
- the quick coupler further includes a first lock member and a first connecting pin.
- the first lock member is provided to be movable between a lock-on position and a lock-off position.
- the first lock member protrudes into the opening of the first hook at the lock-on position.
- the first lock member is retracted from the lock-on position at the lock-off position.
- the first connecting pin connects the first end of the hydraulic cylinder and the coupler body.
- the coupler main body has a first support hole that movably supports the first connecting pin in the expansion / contraction direction of the hydraulic cylinder.
- the first end of the hydraulic cylinder moves away from the second end within the movable range of the first connecting pin, thereby moving the first lock member from the lock-off position to the lock-on position.
- the first support hole is a long hole extending along the expansion / contraction direction of the hydraulic cylinder.
- the first end portion can move in the expansion / contraction direction of the hydraulic cylinder along the long hole, thereby allowing the first locking member to function as a retaining member. For this reason, the structure of the quick coupler can be simplified.
- the quick coupler further includes an elastic member inserted into the first support hole.
- the elastic member presses the first connecting pin in a direction from the second end toward the first end.
- the position of the first connecting pin is held by the pressing force of the elastic member.
- the first lock member is held in the lock-on position.
- the first end of the hydraulic cylinder moves so as to approach the second end within the movable range of the first connecting pin, thereby moving the first lock member from the lock-on position to the lock-off position.
- the retaining function by the first lock member can be automatically released.
- the retaining function by the lock member can be automatically activated when the attachment is mounted, and the retaining function by the lock member can be automatically released when the attachment is detached.
- FIG. 1 is a side view showing a part of a work vehicle 100 to which a quick coupler 1 according to this embodiment is mounted.
- the work vehicle 100 is, for example, a hydraulic excavator.
- the work vehicle 100 is not limited to a hydraulic excavator, and may be another work vehicle.
- the work vehicle 100 includes an arm 101, a link member 102, and an attachment 103.
- a bucket is illustrated as an example of the attachment 103, but the attachment 103 is not limited to the bucket, and may be another attachment such as a cutter, a breaker, or a fork.
- the quick coupler 1 is connected to the arm 101 via the arm pin 104.
- the quick coupler 1 is connected to the link member 102 via the link pin 105.
- the quick coupler 1 is connected to the attachment 103 via a first pin 106 and a second pin 107.
- FIG. 2 is a plan view of the quick coupler 1.
- FIG. 3 is a side sectional view showing a schematic configuration of the inside of the quick coupler 1.
- the quick coupler 1 includes a coupler body 2 and a movable member 3.
- the coupler main body 2 has an arm pin support hole 11 and a link pin support hole 12.
- An arm pin 104 is inserted into the arm pin support hole 11.
- a link pin 105 is inserted into the link pin support hole 12.
- the coupler body 2 has a first hook 4.
- the first hook 4 is locked to the first pin 106.
- the movable member 3 is separate from the coupler body 2.
- the movable member 3 has a second hook 5.
- the second hook 5 is locked to the second pin 107.
- the direction in which the link pin support hole 12 is located with respect to the arm pin support hole 11 is referred to as the front, and the opposite is referred to as the rear.
- the direction in which the first hook 4 and the second hook 5 are located with respect to the arm pin support hole 11 and the link pin support hole 12 is referred to as “downward”, and the opposite is referred to as “upper”.
- the direction in which the axis of the arm pin support hole 11 and the axis of the link pin support hole 12 extend is referred to as the width direction or the side.
- the terms indicating these directions are specified when the quick coupler 1 is viewed as described above, and do not limit the mounting direction of the quick coupler 1.
- the coupler main body 2 includes a first side surface portion 13, a second side surface portion 14, and a wall portion 15.
- the 1st side part 13 and the 2nd side part 14 have a plate-shaped shape extended in the front-back direction and an up-down direction, respectively.
- the 1st side part 13 and the 2nd side part 14 are arrange
- the wall portion 15 extends in the width direction and is disposed across the first side surface portion 13 and the second side surface portion 14.
- the arm pin support hole 11 and the link pin support hole 12 are provided so as to penetrate the first side surface portion 14 and the second side surface portion 15 in the width direction.
- the movable member 3 is movably supported by the coupler body 2. Specifically, the movable member 3 is rotatably supported with respect to the coupler main body 2 via the link pin 105.
- the first hook 4 and the second hook 5 are opened in directions opposite to each other. Specifically, the first hook 4 is open toward the rear. The second hook 5 is open toward the front. The second hook 5 is disposed in front of the first hook 4.
- the quick coupler 1 has a hydraulic cylinder 6, a first connecting pin 7, and a second connecting pin 8.
- the hydraulic cylinder 6 is connected to the hydraulic system of the work vehicle 100 via the hydraulic pipe 21.
- the hydraulic cylinder 6 expands and contracts by the hydraulic pressure from the hydraulic pipe 21.
- the hydraulic cylinder 6 has a first end 22 and a second end 23.
- the first end 22 is connected to the coupler body 2.
- the second end 23 is connected to the movable member 3.
- the hydraulic cylinder 6 has a cylinder tube 24 and a piston rod 25.
- the first end 22 is included in the cylinder tube 24.
- the second end 23 is included in the piston rod 25.
- the first connecting pin 7 connects the first end 22 of the hydraulic cylinder 6 and the coupler body 2.
- the coupler body 2 has a first support hole 26.
- the first support hole 26 is provided so as to penetrate the first side surface portion 13 and the second side surface portion 14.
- the first connecting pin 7 is attached to the first end 22, and the first end 22 is supported by the coupler main body 2 via the first connecting pin 7.
- the first connecting pin 7 is inserted into the first support hole 26.
- the first support hole 26 is a long hole extending along the expansion / contraction direction of the hydraulic cylinder 6. For this reason, the first support hole 26 movably supports the first connecting pin 7 in the expansion / contraction direction of the hydraulic cylinder 6.
- the second connecting pin 8 connects the second end 23 of the hydraulic cylinder 6 and the movable member 3.
- the movable member 3 has a second support hole 27.
- the second support hole 27 is provided so as to penetrate the movable member 3 in the width direction.
- the second connecting pin 8 is attached to the second end 23, and the second end 23 is supported by the movable member 3 via the second connecting pin 8.
- the second support hole 27 is a long hole extending along the expansion / contraction direction of the hydraulic cylinder 6. For this reason, the second support hole 27 movably supports the second connecting pin 8 in the expansion / contraction direction of the hydraulic cylinder 6.
- the wall portion 15 has an opening 151.
- the opening 151 is located above the first end 22.
- the hydraulic pipe 21 is introduced into the coupler main body 2 through the opening 151.
- FIG. 4 is a side sectional view showing a state in which the hydraulic cylinder 6 is extended from the state shown in FIG.
- FIG. 5 is a side sectional view showing a state where the hydraulic cylinder 6 is further extended from the state shown in FIG.
- the hydraulic cylinder 6 rotates the movable member 3 with respect to the coupler main body 2 so that the second hook 5 is separated from the first hook 4.
- FIG. 6 is a side sectional view showing a state in which the hydraulic cylinder 6 is contracted from the state shown in FIG.
- FIG. 7 is a side sectional view showing a state where the hydraulic cylinder 6 is further contracted from the state shown in FIG.
- the hydraulic cylinder 6 contracts, the second end 23 moves so as to approach the first end 22.
- the hydraulic cylinder 6 rotates the movable member 3 with respect to the coupler main body 2 so that the second hook 5 approaches the first hook 4.
- FIG. 4 to FIG. 7 a part of the configuration shown in FIG. 3 is omitted.
- the quick coupler 1 includes a first lock member 16, a second lock member 17, and a biasing member 18.
- the first lock member 16 has a function of automatically retaining the first hook 4 when the attachment 103 is attached.
- the structure regarding the 1st locking member 16 is demonstrated.
- the first lock member 16 is disposed above the first hook 4.
- the first lock member 16 is connected to the coupler main body 2 via the first lock connecting pin 31.
- the first lock member 16 has a proximal end portion 32 and a distal end portion 33.
- the base end portion 32 is supported so as to be rotatable with respect to the coupler main body 2.
- the distal end portion 33 has a hook shape bent downward. That is, the distal end portion 33 has a hook shape bent toward the first hook 4.
- the first lock member 16 is provided to be movable between a first lock-on position and a first lock-off position.
- FIG. 3 shows a state in which the first lock member 16 is located at the first lock-off position.
- 4 and 5 show a state in which the first lock member 16 is located at the first lock-on position.
- the tip 33 of the first lock member 16 protrudes into the opening of the first hook 4.
- the first pin 106 is prevented from coming off from the first hook 4.
- the distal end portion 33 of the first lock member 16 in the first lock-off position, is in a state of retreating from the first lock-on position. Specifically, at the first lock-off position, the distal end portion 33 of the first lock member 16 is in a state of being retracted from the opening of the first hook 4.
- FIG. 5 shows a state in which the first end 22 is located at the holding position.
- the first end 22 holds the first lock member 16 in the first lock-on position in the holding position.
- the first end 22 moves to the release position by moving closer to the second end 23.
- FIG. 3 shows a state in which the first end portion 22 is located at the release position. The first end 22 releases the holding of the first lock member 16 at the release position.
- the first end portion 22 of the hydraulic cylinder 6 has a convex portion 34 that protrudes toward the first lock member 16.
- the convex portion 34 protrudes downward.
- the first lock member 16 has a recess 35 and a receiving portion 36.
- the recessed portion 35 and the receiving portion 36 are located between the proximal end portion 32 and the distal end portion 33.
- the recess 35 has a shape that is recessed downward from the upper surface of the first lock member 16.
- the receiving portion 36 is located behind the concave portion 35.
- the convex portion 34 is in contact with the receiving portion 36, and the convex portion 34 connects the first lock member 16 to the first lock member 16. It is pressing toward the hook 4. As a result, the first lock member 16 is held at the first lock-on position. As shown in FIG. 3, the convex portion 34 is located in the concave portion 35 in a state where the first end portion 22 is located at the release position. As a result, the first lock member 16 is held in the first lock-off position.
- the first lock member 16 has an inclined surface 37 and a step portion 38 connected to the recess 35.
- the inclined surface 37 and the stepped portion 38 are located between the proximal end portion 32 and the distal end portion 33.
- the inclined surface 37 is disposed in the direction from the second end 23 toward the first end 22 with respect to the recess 35. That is, the inclined surface 37 is disposed behind the recess 35.
- the step portion 38 is disposed in the direction from the first end portion 22 toward the second end portion 23 with respect to the recess portion 35. That is, the stepped portion 38 is disposed in front of the concave portion 35.
- an elastic member 28 is inserted into the first support hole 26.
- the elastic member 28 is made of rubber, for example.
- the elastic member 28 only needs to be a material that generates an elastic force, and is not limited to rubber but may be another material.
- the elastic member 28 has an elongated shape along the first support hole 26.
- FIG. 8 shows the first connecting pin 7 and the elastic member 28 in a state where the first end portion 22 is located at the holding position (see FIG. 5).
- the elastic member 28 presses the first connecting pin 7.
- FIG. 9 shows the first connecting pin 7 and the elastic member 28 in a state where the first end 22 is moved from the holding position to the release position, as shown in FIG.
- the elastic member 28 is compressed by the first connecting pin 7 by the movement of the first connecting pin 7. That is, the elastic member 28 is disposed so as to be compressed by the first connecting pin 7 when the hydraulic cylinder 6 contracts.
- the second lock member 17 has a function of automatically retaining the second hook 5 when the attachment 103 is attached. As shown in FIG. 3, the second lock member 17 is disposed in front of the second hook 5. The second lock member 17 is connected to the movable member 3 via a second lock connecting pin. The second lock member 17 is rotatably supported by the movable member 3 via the second lock connecting pin 41.
- the second lock member 17 is provided so as to be rotatable between a second lock-on position and a second lock-off position.
- 3 and 4 show a state in which the second lock member 17 is located at the second lock-off position.
- FIG. 5 shows a state in which the second lock member 17 is located at the second lock-on position.
- the second lock member 17 projects into the opening of the second hook 5 at the second lock-on position. As shown in FIGS. 3 and 4, the second lock member 17 is in a state of being retracted from the second lock-on position at the second lock-on position.
- the urging member 18 urges the second lock member 17 toward the second lock-on position.
- the urging member 18 is connected to the movable member 3 via a connecting pin 57.
- the urging member 18 is connected to the second lock member 17 via a connecting pin 58.
- the biasing member 18 includes a spring 42, a spring cover 43, and a shaft 44.
- the spring 42 is in a compressed state at both the second lock-on position and the second lock-off position.
- the spring cover 43 accommodates the spring 42.
- the spring cover 43 is connected to the movable member 3 via a connecting pin 57 so as to be rotatable.
- the shaft 44 is pressed by the spring 42 and protrudes from the spring cover 43.
- the shaft 44 is connected to the second lock member 17 via a connecting pin 58 so as to be rotatable.
- the second support hole 27 described above movably supports the second connecting pin 8 between a lock release position and a lock operation position along the expansion / contraction direction of the hydraulic cylinder 6.
- the lock release position is a position at which the retaining function by the second lock member 17 is released.
- the lock operation position is a position at which the retaining function by the second lock member 17 is activated.
- the second lock member 17 has a guide hole 45.
- the guide hole 45 is disposed so as to overlap the second support hole 27 when viewed from the axial direction of the second connecting pin 8.
- the second connecting pin 8 is inserted into the second support hole 27 and the guide hole 45.
- the guide hole 45 has a substantially triangular shape having three corners.
- FIG. 10 is an enlarged view of the second lock member 17 and its surroundings. As shown in FIG. 10, the edge of the guide hole 45 has a first corner 46, a second corner 47, a third corner 48, a first connection 51, a second connection 52, 3 connection portions 53.
- “8a” indicates the position of the second connecting pin 8 with respect to the second lock member 17 in the lock operation position.
- “8b” indicates the position of the second connecting pin 8 with respect to the second lock member 17 at the unlocking position. Further, “8” indicates the position of the second connecting pin 8 with respect to the second lock member 17 at a position between the lock operation position and the lock release position.
- the first corner portion 46 includes a first contact portion 54. As shown in FIG. 5, the first contact portion 54 contacts the second connection pin 8 in a state where the second connection pin 8 is located at the lock operation position.
- the second corner portion 47 includes a second contact portion 55. As shown in FIG. 3, the second contact portion 55 comes into contact with the second connection pin 8 in a state where the second connection pin 8 is located at the unlock position.
- the third corner portion 48 is disposed in the movable direction of the second lock member 17 with respect to the first corner portion 46. The third corner 48 is located below the first corner 46. The third corner 48 is located in front of the second corner 47.
- the first connection portion 51 connects the first corner portion 46 and the second corner portion 47.
- the second connection portion 52 connects the second corner portion 47 and the third corner portion 48.
- the third connection portion 53 connects the third corner portion 48 and the first corner portion 46.
- the first connection part 51 includes a guide part 56.
- the guide portion 56 extends between the first contact portion 54 and the second contact portion 55 in a direction that intersects the moving direction of the second connecting pin 8 (see arrow A8).
- the guide portion 56 is pressed by the second connection pin 8 when the second connection pin 8 moves from the lock operation position (8a) to the lock release position (8b). Accordingly, the second lock member 17 moves from the second lock-on position to the second lock-off position against the urging force of the urging member 18.
- the third connecting portion 53 extends downward from the second connecting pin 8 located at the lock operating position (8a). For this reason, as shown in FIG. 5, the edge of the guide hole 45 is arranged at an interval from the second connecting pin 8 located at the lock operating position. Specifically, the third corner 48 is disposed below the second connecting pin 8 located at the lock operating position (8a) with a space therebetween. That is, the guide hole 45 has a space in which the second connection pin 8 can be disposed below the second connection pin 8 located at the lock operation position. For this reason, the second lock member 17 is movable from the second lock-on position to the second lock-off position in a state where the second connecting pin 8 is located at the lock operation position.
- the operation when attaching the attachment 103 to the quick coupler 1 will be described.
- the first pin 106 is locked to the first hook 4 (see arrow A1).
- the second pin 107 is disposed in front of the second hook 5 (see arrow A2). Then, the hydraulic cylinder 6 is extended.
- the second connecting pin 8 moves from the unlocked position to the locked operating position (see arrow A5).
- the pressing of the second lock member 17 to the second lock-off position by the second connecting pin 8 is released.
- the 2nd lock member 17 moves to the 2nd lock on position by energizing force of energizing member 18 (refer arrow A7). as a result.
- the second pin 107 is prevented from coming off the second hook 5 by the second lock member 17.
- the second pin 107 is moved from the position facing the opening of the second hook 5 by rotating the quick coupler 1 or the attachment 103 around the first pin 106 (see arrow A13). Then, the first hook 4 is removed from the first pin 106 (see arrow A14). As described above, the attachment 103 is removed from the quick coupler 1.
- the retaining function by the first lock member 16 and the second lock member 17 can be automatically applied. Further, when the attachment 103 is removed, the retaining function by the first lock member 16 and the second lock member 17 can be automatically released.
- the second pin 107 of the attachment 103 is pressed against the second lock member 17 from the outside of the opening of the second hook 5.
- the second lock member 17 can be moved from the second lock-on position to the second lock-off position against the biasing force of the biasing member 18.
- the pin of an attachment can be inserted in opening of the 2nd hook 5.
- FIG. After the second pin 107 pushes the second lock member 17 and is inserted into the opening of the second hook 5, the second lock member 17 is moved to the second lock-on position by the biasing force of the biasing member 18. Returned.
- the second pin 107 is retained by the second hook 5 by the second lock member 17.
- the second lock member 17 is held at the second lock-on position by the urging force of the urging member 18. Further, since the first connecting pin 7 is pressed by the elastic member 28, the first lock member 16 is held at the first lock-on position. Thereby, the attachment 103 can be held at the work position.
- the shape of the first support hole 26 or the second support hole 27 is not limited to the long hole, and may be changed.
- the first support hole 26 may be circular or oval larger than the first connecting pin 7.
- the second support hole 27 may be circular or oval larger than the second connecting pin 8.
- the first lock member 16 is not limited to the configuration of the above-described embodiment, and may be changed.
- the concave portion 35, the inclined surface 37, or the stepped portion 38 may not be provided in the first lock member 16.
- the first lock member 16 may move to the first lock-on position and the first lock-off position by moving linearly or curvedly instead of rotating.
- the second lock member 17 is not limited to the configuration of the above-described embodiment, and may be changed.
- the shape of the guide hole 45 of the second lock member 17 may be changed.
- the guide hole 45 is not limited to a substantially triangular shape, and may be another polygonal shape such as a quadrangle, an ellipse, or a circle.
- the guide hole 45 may have a shape that matches the locus of movement of the second connecting pin 8.
- the urging member 18 is not limited to a spring, and may be composed of other members that generate an urging force, such as a fluid such as gas or liquid, or an elastic material.
- the elastic member 28 may be omitted.
- the wall 15 of the coupler body 2 may be omitted.
- the first end 22 is included in the cylinder tube 24, and the second end 23 is included in the piston rod 25.
- the first end may be included in the piston rod and the second end 23 may be included in the cylinder tube.
- the retaining function by the lock member can be automatically activated when the attachment is mounted, and the retaining function by the lock member can be automatically released when the attachment is detached.
- Second hook First hook 2 Coupler body 16 First lock member 5 Second hook 22 First end 23 Second end 6 Hydraulic cylinder 7 First connection pin 8 Second connection pin 26 First support hole 27 Second support Hole 1 Quick coupler 28 Elastic member 45 Guide hole 54 First contact portion 55 Second contact portion 56 Guide portion
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Shovels (AREA)
Abstract
Description
2 カプラ本体
16 第1ロック部材
5 第2のフック
22 第1端部
23 第2端部
6 油圧シリンダ
7 第1連結ピン
8 第2連結ピン
26 第1支持孔
27 第2支持孔
1 クイックカプラ
28 弾性部材
45 ガイド孔
54 第1接触部
55 第2接触部
56 ガイド部
Claims (9)
- 第1のフックを有するカプラ本体と、
第2のフックを有し、前記カプラ本体に対して可動的に支持される可動部材と、
前記カプラ本体に接続される第1端部と、前記可動部材に接続される第2端部とを有し、伸張することによって前記第2のフックが前記第1のフックから離れるように前記可動部材を移動させ、収縮することによって前記第2のフックが前記第1のフックに近づくように前記可動部材を移動させる油圧シリンダと、
前記油圧シリンダの前記第2端部と前記可動部材とを連結する第2連結ピンと、
前記第2のフックの開口内に突出するロックオン位置と、前記ロックオン位置から退いたロックオフ位置とに移動可能に設けられる第2ロック部材と、
前記第2ロック部材を前記ロックオン位置に向かって付勢する付勢部材と、
を備え、
前記可動部材は、前記油圧シリンダの伸縮方向に沿ったロック解除位置とロック作動位置との間で前記第2連結ピンを可動的に支持する第2支持孔を有し、
前記油圧シリンダが伸長することで、前記第2連結ピンは、前記ロック解除位置から前記ロック作動位置へ移動し、
前記油圧シリンダが収縮することで、前記第2連結ピンは、前記ロック作動位置から前記ロック解除位置へ移動し、
前記第2ロック部材は、前記第2支持孔と重なるように配置されるガイド孔を有し、
前記第2連結ピンは、前記第2支持孔と前記ガイド孔とに挿入されており、
前記ガイド孔の縁は、
前記第2連結ピンが前記ロック作動位置に位置している状態で前記第2連結ピンと接触する第1接触部と、
前記第2連結ピンが前記ロック解除位置に位置している状態で前記第2連結ピンと接触する第2接触部と、
前記第1接触部と前記第2接触部との間において前記第2連結ピンの移動方向に対して交差する方向に延びており、前記ロック作動位置から前記ロック解除位置に移動する前記第2連結ピンによって押圧されることで前記付勢部材の付勢力に抗して前記第2ロック部材を前記ロックオン位置から前記ロックオフ位置に移動させるガイド部と、
を有する、
クイックカプラ。 - 前記第2支持孔は、前記油圧シリンダの伸縮方向に沿って延びる長孔である、
請求項1に記載のクイックカプラ。 - 前記第2ロック部材は、前記ロックオン位置と前記ロックオフ位置との間で回動可能に前記可動部材に支持される、
請求項1又は2に記載のクイックカプラ。 - 前記ガイド孔の縁は、
前記第1接触部を含む第1隅部と、
前記第2接触部を含む第2隅部と、
前記第1隅部に対して前記第2ロック部材の可動方向に配置される第3隅部と、
前記ガイド部を含み前記第1隅部と前記第2隅部とを接続する第1接続部と、
前記第2隅部と前記第3隅部とを接続する第2接続部と、
前記第3隅部と前記第1隅部とを接続する第3接続部と、
を有する、
請求項1から3のいずれかに記載のクイックカプラ。 - 前記第2連結ピンが前記ロック作動位置に位置する状態で前記第2ロック部材が前記ロックオン位置から前記ロックオフ位置に移動可能なように、前記第3隅部は、前記ロック作動位置の前記第2連結ピンに対して間隔をおいて下方に配置される、
請求項4に記載のクイックカプラ。 - 前記第1のフックの開口内に突出するロックオン位置と、前記ロックオン位置から退いたロックオフ位置とに移動可能に設けられる第1ロック部材と、
前記油圧シリンダの前記第1端部と前記カプラ本体とを連結する第1連結ピンと、
をさらに備え、
前記カプラ本体は、前記第1連結ピンを前記油圧シリンダの伸縮方向に可動的に支持する第1支持孔を有し、
前記油圧シリンダの前記第1端部は、前記第1連結ピンの可動範囲内で前記第2端部から離れるように移動することで前記第1ロック部材を前記ロックオフ位置から前記ロックオン位置に移動させる、
請求項1から5のいずれかに記載のクイックカプラ。 - 前記第1支持孔は、前記油圧シリンダの伸縮方向に沿って延びる長孔である、
請求項6に記載のクイックカプラ。 - 前記第1支持孔に挿入される弾性部材をさらに備え、
前記弾性部材は、前記第2端部から前記第1端部に向かう方向に前記第1連結ピンを押圧する、
請求項6又は7に記載のクイックカプラ。 - 前記油圧シリンダの前記第1端部は、前記第1連結ピンの可動範囲内で前記第2端部に近づくように移動することで、前記第1ロック部材を前記ロックオン位置から前記ロックオフ位置に移動させる、
請求項6から8のいずれかに記載のクイックカプラ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2015281832A AU2015281832B2 (en) | 2014-06-26 | 2015-06-23 | Quick coupler |
US15/315,902 US10184224B2 (en) | 2014-06-26 | 2015-06-23 | Quick coupler |
CN201580024771.7A CN106460359B (zh) | 2014-06-26 | 2015-06-23 | 快速连接器 |
KR1020167031102A KR101776081B1 (ko) | 2014-06-26 | 2015-06-23 | 퀵 커플러 |
DE112015002420.4T DE112015002420T5 (de) | 2014-06-26 | 2015-06-23 | Schnellwechsler |
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JP2014131346A JP6284445B2 (ja) | 2014-06-26 | 2014-06-26 | クイックカプラ |
JP2014-131346 | 2014-06-26 |
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WO2015199082A1 true WO2015199082A1 (ja) | 2015-12-30 |
Family
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PCT/JP2015/068062 WO2015199082A1 (ja) | 2014-06-26 | 2015-06-23 | クイックカプラ |
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US (1) | US10184224B2 (ja) |
JP (1) | JP6284445B2 (ja) |
KR (1) | KR101776081B1 (ja) |
CN (1) | CN106460359B (ja) |
AU (1) | AU2015281832B2 (ja) |
DE (1) | DE112015002420T5 (ja) |
WO (1) | WO2015199082A1 (ja) |
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KR20210122246A (ko) * | 2019-02-04 | 2021-10-08 | 스미도모쥬기가이고교 가부시키가이샤 | 쇼벨 |
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JP7393317B2 (ja) | 2020-11-02 | 2023-12-06 | ヤンマーホールディングス株式会社 | 建設機械のアタッチメント着脱装置およびそれを備えた建設機械 |
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JP2016008477A (ja) | 2016-01-18 |
DE112015002420T5 (de) | 2017-03-09 |
CN106460359A (zh) | 2017-02-22 |
AU2015281832B2 (en) | 2017-04-27 |
KR20160142387A (ko) | 2016-12-12 |
JP6284445B2 (ja) | 2018-02-28 |
AU2015281832A1 (en) | 2016-12-08 |
CN106460359B (zh) | 2018-09-28 |
KR101776081B1 (ko) | 2017-09-07 |
US10184224B2 (en) | 2019-01-22 |
US20170107687A1 (en) | 2017-04-20 |
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