JP4021269B2 - Coupler mechanism for arm attachment side and attachment - Google Patents

Description

001
BACKGROUND OF THE INVENTION
The present invention relates to a coupler mechanism for connecting an arm attachment side member and attachment of a heavy machine such as a power shovel, and in particular, a rotator to which an arm is connected and a rotating member such as a trommel can be firmly and quickly connected and easily removed. The present invention relates to a coupler mechanism.
[002]
[Problems to be solved by the invention]
When connecting to an attachment such as an excavation bucket to an arm or link of a heavy machine, a coupler is used in order to make the connecting operation simple and quick.
In a conventional coupler, a rod of the other member is hooked on a hook provided on one member, and the lower portions of both members are generally engaged with various attachment / detachment engagement means.
003
This type of conventional coupler mechanism is not inconvenient compared to an attachment that swings only up and down. There was a problem and there was an inconvenience that it could not withstand severe rotation work.
Further, even attachments such as buckets that swing up and down inevitably receive a torsional force depending on the work situation, and troubles such as damage to the members occur.
[004]
Accordingly, an object of the present invention is to provide a coupler mechanism having a severe rotational force and a coupling strength that can withstand twisting.
[005]
[Means for Solving the Problems]
In order to achieve the above object, a coupler mechanism according to the present invention includes a pair of engaging protrusions formed integrally with a front surface plate of an arm mounting side member, with a reduced diameter neck portion formed in a shaft body portion. A coupling chamber surrounded by a frame and a support top plate, and a plurality of insertion openings corresponding to the engagement protrusions of the arm attachment side member are provided in the support top plate contacting the front plate of the arm attachment side member; A receiving member integrally coupled to the back surface of the attachment; and a U-shaped receiving portion that engages with the reduced-diameter neck portion of each of the pair of engaging members. A pair of slidably fitted engagement pieces; a slide for sliding the engagement piece and attaching and detaching the U-shaped receiving portion of the engagement piece to the reduced-diameter neck portion of the engagement protrusion received in the coupling chamber An operation member; and That.
[006]
Preferably, the front plate of the arm mounting side member is provided with four engagement protrusions in which two sets of engagement protrusions, each having two engagement protrusions spaced apart from each other, are opposed to each other on the front plate , Each of the engaging pieces corresponding to two sets of engaging protrusion groups has two U-shaped receiving portions corresponding to two sets of engaging protrusions.
[007]
More preferably, the coupling block has a structure in which an engagement plate having a U-shaped receiving portion is integrally coupled to a base in which a screw hole is formed, and the slide operation member is rotatable to a frame of the coupling chamber. And a screw rod whose front end is screwed into the screw hole of the engagement piece so as to be able to advance and retreat.
[008]
In order to facilitate the engagement between the engagement protrusion and the engagement piece, a slide guide that engages with the U-shaped receiving portion of the engagement piece is preferably provided inside the coupling chamber.
[009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, the coupler mechanism of the present invention includes a plurality of engagement protrusions 3 integrally coupled to a front plate 2 of an arm attachment side member 1 of a heavy machine, and a receiving member 5 integrally coupled to the back surface of an attachment 4. An engagement piece 6 that is detachably engaged with the engagement protrusion 3 inside the receiving member 5, and a slide operation member 7 that moves the engagement piece 6 to the engagement protrusion engagement position and the release position. It has. These members are made of a strong material such as steel.
[0101]
The arm mounting side member 1 of the illustrated embodiment has a rotator 10 integrally coupled between a base plate 9 having an arm connection stay 8 of a heavy machine and the front plate 2, and the front plate 2 is integrated with a rotating portion 11 of the rotator 10. The rotating member is illustrated.
[0111]
As shown in FIG. 1, the engagement protrusion 3 forms a reduced-diameter neck 12 that engages a U-shaped receiving portion 19 of an engagement piece 6 described later in the middle of the shaft.
In the embodiment shown in the figure, as shown in FIG. 2, four engaging projections 3 are integrally coupled to the front plate 2 of the arm mounting side member 1, and a set of two engaging projections 3, 3 has a predetermined interval. 2 are arranged opposite to each other in the vertical direction of FIG.
That is, as shown in FIGS. 2 and 7, the engaging protrusion 3 has two sets of engaging protrusions 3, each having two spaced apart engaging protrusions 3, 3 as opposed to each other on the front plate 2. In addition, four engaging projections 3, 3, 3, 3 are provided.
[0112]
The attachment 4 in the illustrated embodiment illustrates a trommel having a rectangular frame, and the receiving member 5 integrally fixed to the back surface of the attachment 4 is surrounded by vertical and horizontal frames 13a and 13b and a support top plate 14. A binding chamber 15 is provided.
The coupling chamber 15 has a height sufficient to receive the engagement protrusion 3 of the arm attachment side member 1, and as shown in FIG. 3, the engagement protrusion of the arm attachment side member 1 is provided on the support top plate 14. Four insertion openings 16 for inserting 3 are formed corresponding to the positions of the engaging protrusions 3.
[0113]
A pair of engaging pieces 6 and 6 are slidably fitted inside a coupling chamber 15 formed in the center of the receiving member 5.
The engaging pieces 6 and 6 are members for locking the engaging projections 3 inserted into the coupling chamber 15 and engaging the receiving members 5 with each other, and a pair of engagements corresponding to the two sets of the engaging projections 3 group. The pieces 6 and 6 are arranged so as to face to the left and right.
[0142]
As shown in FIGS. 1, 4, and 5, each engagement piece 6 is formed of a member in which an engagement plate 18 is integrally coupled to the upper surface of the support block 17, and the engagement plate 18 is in the coupling chamber 15. A U-shaped receiving portion 19 is formed which is fitted into the reduced-diameter neck portion 12 of the inserted engaging protrusion 3 and engages the engaging protrusion 3 with the member 5.
The engagement piece 6 shown in the figure is provided with two U-shaped receiving portions 19 and 19 corresponding to a pair of engagement protrusions 3 and 3 on the left and right sides of the engagement plate 18 and supported on the lower center surface of the engagement plate 18. Block 17 is coupled.
[0151]
The support block 17 is formed with a screw hole 20 into which a slide operation member 7 (screw rod in the figure) described later is screwed in a direction perpendicular to the axis of the engagement plate 18.
[0163]
Thus, as shown in FIG. 5, the pair of engaging pieces 6, 6 are slidably disposed in the coupling chamber 15 with the U-shaped receiving portions 19 facing each other. In order to make the slide smooth, in the embodiment shown in the figure, slide guides 21 slidably engaged with the U-shaped receiving portions 19 of the respective engagement pieces 6 are fixed to the coupling chamber 15 at four locations. The edge of the U-shaped receiving part 19 of the engaging piece 6 is adapted to engage with the groove 22 of the slide guide 21 and slide.
[0173]
The engagement piece 6 is assembled by a slide operation member 7 so as to move to an engagement (lock) position and an unlock position of the engagement protrusion 3.
[0181]
As shown in FIGS. 6 and 7, the slide operation member 7 in the illustrated embodiment is rotatably attached to the frame 13 of the coupling chamber 15 and screwed into the screw hole 20 of the engagement piece 6 through the frame 13a. The screw rod 23 is used.
[0209]
Thus, according to the coupler mechanism of the present invention, the engagement protrusion 3 of the arm attachment side member 1 is inserted into the coupling chamber 15 through the insertion port 16 of the member 5, and the screw of the slide operation member 7 protruding outside the frame 13a. When the head nut 24 of the rod 23 is rotated, the engagement piece 6 is pushed out from the phantom line position in FIG. 7 to the solid line position in the coupling chamber 15, and the reduced diameter neck 12 of the engagement protrusion 3 inserted into the coupling chamber 15 is moved. By engaging with the U-shaped receiving part 19, the engaging protrusion 3 is coupled to the receiving member 5. On the other hand, when the head nut 24 is rotated in the reverse direction, the engagement piece 6 is pulled back to the imaginary line position, and the coupling is released.
[0202]
In the figure, reference numeral 25 denotes a hydraulic port of the hydraulic rotator 10.
[021]
【effect】
In the coupler mechanism of the present invention, the arm mounting side member and the receiving member are firmly coupled by simply inserting the engaging protrusion of the arm mounting side member into the attachment receiving member and sliding the engaging piece. In particular, the engagement protrusion is fastened to the two members of the U-shaped receiving portion of the engagement piece and the base plate, so that no play occurs.
[022]
Since each of the two locations is tightened from both sides by the above coupling mechanism, the engaging projection and the receiving member are firmly coupled to the left, right, up, down, and front and rear. Therefore, it is resistant to rotational force and torsion, and is particularly useful as a coupling mechanism for a rotational attachment such as a trommel.
[Brief description of the drawings]
[Fig. 1] Member configuration diagram of a coupler mechanism according to the present invention [Fig. 2] Bottom view of an arm mounting side member [Fig. 3] Plan view of an attachment side receiving member [Fig. 4] Front view of an engaging piece [Fig. Bottom view of piece [FIG. 6] Coupling diagram of coupler mechanism according to the present invention [FIG. 7] AA sectional view of FIG.
DESCRIPTION OF SYMBOLS 1 ... Arm attachment side member 2 ... Front plate 3 ... Engagement protrusion 4 ... Attachment 5 ... Receiving member 6 ... Engagement piece 7 ... Slide operation member 8 ... Arm connection stay 9 ... Base plate 10 ... Rotator 11 ... Rotating part 12 ... Shrinkage Diameter neck portion 13, 13a, 13b ... frame 14 ... support top plate 15 ... coupling chamber 16 ... insertion port 17 ... support block 18 ... engagement plate 19 ... U-shaped receiving portion 20 ... screw hole 21 ... slide guide 22 ... groove 23 ... Screw rod 24 ... Head nut 25 ... Hydraulic port

Claims (4)

A pair of engaging projections formed by forming a reduced-diameter neck on the shaft body and integrally coupled to the front plate of the arm mounting side member;
A plurality of insertion openings corresponding to the engaging protrusions of the arm mounting side member provided in the supporting top plate which are in contact with the front plate of the arm mounting side member; A receiving member integrally coupled to the back of the attachment;
A pair of engaging pieces, each having a U-shaped receiving portion that engages with a reduced-diameter neck portion of each pair of engaging members, and is slidably fitted in a coupling chamber of the receiving member;
An arm mounting comprising: a sliding operation member that slides the engagement piece and attaches and detaches the U-shaped receiving portion of the engagement piece to a reduced-diameter neck portion of the engagement protrusion received in the coupling chamber. Side member and attachment coupler mechanism The front plate of the arm mounting side member is provided with four engagement protrusions in which two sets of engagement protrusions, each having two engagement protrusions spaced apart from each other, are opposed to each other on the front plate . 2. The coupler mechanism according to claim 1, wherein each of the engaging pieces corresponding to the engaging protrusion group has two U-shaped receiving portions corresponding to a pair of engaging protrusions. The engagement piece is formed by integrally coupling an engagement plate having a U-shaped receiving portion to a base in which a screw hole is formed, and the slide operation member rotatably supports the base portion on the frame of the coupling chamber, The coupler mechanism according to claim 1, further comprising a screw rod that is screwed into a screw hole of the engagement piece so as to be capable of moving forward and backward.   The coupler mechanism according to claim 1, 2, or 3, further comprising a slide guide that engages with a U-shaped receiving portion of the engaging piece inside the coupling chamber.

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