JP3051321U - Interchangeable multi-function attachment - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To easily replace an attachment for a construction machine for various uses. SOLUTION: A hydraulic cylinder is mounted on a housing rotatably connected to an arm of a power shovel, a pair of arms are rotatably supported on the housing, and these arms are opened and closed by the hydraulic cylinder.
A connecting portion is formed at each of the tips protruding from the housings of the pair of arms, and a connecting portion is formed at each of the upper ends of a pair of opposing members such as a fork, a bucket, a cutter, and a crusher that are opened and closed. The opposing members are selected, and the connecting portions thereof are detachably connected and fixed to the connecting portions of the arms, respectively, so that the arm and the opposing members are integrally operated.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an exchangeable multifunctional attachment attached to a hydraulic excavator or the like, and more specifically, to the above-mentioned housing via a transmission means such as a link and an arm by a hydraulic cylinder mounted on a hung jig attached to the tip of an arm of the excavator. A pair of rotatably supported opposing members are moved toward and away from each other to open and close and perform construction work such as crushing, crushing, cutting, grasping, pinching or scooping. The work can be done.

[0002]

[Prior art]

 Conventionally, as shown in FIGS. 12 and 13, an attachment attached to the end of an arm of this type of excavator fixes the connecting member 1 to the arm of the excavator via a bracket 1a and fixes or rotates the connecting member 1 to the connecting member 1. The housing 2 is mounted as possible, and the base end of the hydraulic cylinder 3 is rotatably supported in the housing 2, and the center of a pair of arms 4, 5 is rotatable at the lower end of the housing 2 with pins 6, 7. It is pivoted. The upper end of the one arm 4 is connected to the tip of a rod 8 which expands and contracts from the hydraulic cylinder via a pin 9, and both ends of a link 10 are connected to the arm 4 and the other arm 5 by pins 11 and 12. Are linked through. When the attachment is a fork, fork members 13 and 14 are welded and fixed to the lower ends of the arms 4 and 5, respectively.

In the attachment, the arm 4 rotates around the pin 6 as a fulcrum and the arm 5 rotates around the pin 7 via the arm 4 and the link 10 by the expansion and contraction of the rod 8 of the hydraulic cylinder 3. Operate. In response to the operation of the arms 4 and 5, the fixed fork members 13 and 14 operate in the direction of approaching / separating, and the waste material, dismantled material, crushed material, etc. are grasped by the proximity operation, and the material grasped by the separating operation is removed. They are removed at the required position.

[0004] The above-mentioned attachment performs an operation of grasping waste materials, dismantled materials, and the like by opening and closing operations for moving the fork members 13, 14 toward and away from each other. Attachments for construction work, such as cutters for cutting dismantled materials, and crushers for crushing, crushing, and splitting dismantled materials, have the same configuration as the attachments of the above forks, respectively.

[0005] Attachments such as forks, buckets, cutters, crushers, and the like are similar operations in which a pair of opposing members are opened and closed. Therefore, if the opposing members are exchanged, the drive portion can be shared and used. . Therefore, it is desired that the opposing portions can be exchanged in pairs.

In order to respond to the above-mentioned demand, arms 4 and 5 which are integrated by welding and fixing with opposing members, for example, fork members 13 and 14, respectively, are removed from the housing 2, and other opposing members, for example, a pair of There is provided a cutter member and a pair of arms which are respectively welded and fixed to the housing 2.

[0007]

[Problems to be solved by the invention]

 As described above, in the case of replacing the arms 4 and 5 rotatably supported by the housing 2 with the pins 6 and 7 as fulcrums, the link 10 for connecting the pins 6 and 7 and the arms 4 and 5 is replaced. It is necessary to remove a total of five pins, ie, pins 11 and 12 at both ends and a pin 9 connecting the arm 4 and the rod 8. In addition, in order to mount the exchanged arms 4 and 5, it is necessary to use the five pins to rotatably connect the arms.

[0008] The connecting portions formed by the five pins must be rotatably connected, so that the connecting structure is complicated. In particular, the pins 6 and 7 connecting the arms 4 and 5 to the housing 2 act as rotation fulcrums of opposing members integrated with the arms 4 and 5, respectively, so that a load is applied. There is a problem that it is troublesome to replace these pins and cannot be easily replaced.

The present invention has been made in view of the above-described problems, and has a configuration in which an opposing member that is opened and closed can be easily replaced so that the attachment can be used by changing to a fork, a bucket, a cutter, a crusher, or the like. The challenge is to do.

[0010]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention connects an arm of a power shovel and a housing via a connecting member, fixes a bracket of the connecting member to the arm, and mounts a rotation driving means on the connecting member. An output shaft rotated by the rotation driving means is fixed to the housing, the housing is rotatable with respect to the connecting member, and a hydraulic cylinder is mounted on the housing, and a pair of The arms are rotatably supported, and these arms are opened and closed by the hydraulic cylinders. A connecting portion is formed at each of the tips of the pair of arms protruding from the housing, and a fork that is opened and closed is provided. A connecting portion is also formed at the upper end of each of a pair of opposing members such as a bucket, a cutter, and a crusher, and these opposing members are selected. The exchangeable multi-function, characterized in that the connection portion is detachably connected and fixed to the connection portion of the arm, and the arm and the facing member are integrally operated. Offers attachments.

[0011] As described above, in the present invention, the opposing member is separated from the arm which is conventionally welded and fixed or integrally formed, without replacing the rotatably supported portion, and the arm is housed. The opposite member is replaced with a member of a required shape, and the opposite member to be replaced is connected so as to be fixed integrally with the arm.

As described above, since the rotatable portion is not replaced at the portion to be replaced but is simply connected at a portion that only needs to be fixed, the configuration of the connecting portion can be simplified. In addition, since it is only necessary to replace the pair of arms with the opposing members, it is necessary to replace only two places, which is much less than the conventional case where replacement work was required at five places. Can be simplified. As a result, the required counter member can be easily exchanged, and the attachment can be easily and quickly exchanged from a fork to a bucket, or from a crusher to a bucket, with an attachment that changes according to the work progress. .

[0013] Further, as described above, the arm of the power shovel and the housing are connected via the connecting member, the bracket of the connecting member is fixed to the arm, and the connecting member is provided with the rotation driving means. The rotation output shaft of the rotation driving means is fixed to the housing, and the housing is rotatable with respect to the connecting member.

When the housing is rotatable as described above, the pair of opposing members can be rotated to a position where the work can be easily performed with respect to the object to be crushed or the like, and the working efficiency can be increased.

Further, if the housing is configured to be rotationally driven, an attachment such as a breaker for drilling or an auger can be included as the pair of exchange means opposed to each other. Accordingly, a connection bar is provided at the upper ends of the screws of the chisel and the auger of the breaker for drilling, the support bar extending horizontally to both sides, and the connection portion provided at both ends of the support bar for removably connecting and fixing the pair of arms. A piece is protruded, and the above-mentioned chisel or screw is exchanged so that it can be mounted.

The hydraulic cylinder mounted on the housing rotatably supports a base end of the hydraulic cylinder on the housing, and rotatably supports a distal end of an operating rod of the hydraulic cylinder with a distal end of the one arm. And the other arm are rotatably supported at both ends of the link and connected to each other, and the pair of arms are preferably opened and closed in accordance with the expansion and contraction of the rod of the hydraulic cylinder.

With the above configuration, one hydraulic cylinder and one link can open and close a pair of arms, and a simple drive mechanism provided in a non-replaceable housing can improve durability. Can be enhanced.

Each of the pair of arms is composed of two plates pivotally supported on both sides of a pin connected to the housing, and the pair of opposing members detachably fixed to the arms are also spaced apart from each other. Two brackets are protruded, and a pin through hole and a pin insertion groove are provided in the two plates of the arm, respectively, while a pin through hole is provided in the two brackets of the opposing member. Together with the connecting pin, insert the connecting pin of the opposing member into the pin insertion groove of the arm, align the arm with the pin through hole of the opposing member, connect the arm through the pin, and connect the arm and the opposing member respectively. It is fixed.

With the above configuration, the connecting pin can be connected and fixed through the pin in a state where the connecting pin is temporarily held by inserting the pin insertion groove, thereby improving workability and facilitating opposition of the required shape. It can be replaced with a member. In the case of the above connection structure, the shape of the pin insertion groove, the positional relationship with the pin through hole, and the removal of the connection pin from the pin insertion groove by attaching the lid after inserting the connection pin into the pin insertion groove, etc. Can be reliably prevented.

Alternatively, two connecting pins are attached between the two brackets of each opposing member at an interval, while one pin insertion groove communicating with the two plates of each arm is formed, Arms provided with pin insertion grooves were swingably mounted, and after inserting the connecting pins of the opposing members into these pin insertion grooves, the other end of the arm was fixed with a screw and inserted into the pin insertion groove. The connection pin may be connected and fixed in a state where it is prevented from falling off.

The configuration in which the pair of arms pivotally supported by the housing and the pair of opposing members are detachably connected and fixed is not limited to the above-described configuration, but can be securely connected and fixed with a simple configuration and operation. In such a case, a conventionally known connection fixing structure can be appropriately adopted.

[0022]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The first embodiment shown in FIGS. 1 to 4 has a configuration similar to that of the attachment shown in FIGS. 12 and 13 except for the facing member formed of a pair of fork members, and the facing member is replaceable. Therefore, the same members as those in FIGS. 12 and 13 are described with the same reference numerals.

That is, the arm 20 of the hydraulic power shovel and the link 21 are rotatably supported via the pins 22 and 23 on the bracket 1 a projecting from the board 1 b of the mounting member 1. A hydraulic motor 24 is mounted on the substrate 1b. The output shaft of the motor 24 projects downward and is connected and fixed to the upper surface plate 2a of the housing 2 via a reduction gear mechanism so that the housing 2 can be turned in the horizontal direction.

The housing 2 has a box shape with a lower surface and an opening on one side by connecting and fixing side plates 2b and 2c to an upper plate 2a. Inside the housing 2, the base end of the cylinder body 3 a of the hydraulic cylinder 3 is rotatably supported on the side plates 2 b and 2 c by pins 24, and substantially “く” is provided below the side plates 2 b and 2 c. A pair of "15" -shaped arms 15 and 16 are rotatably supported via pins 17 and 18. These arms 15 and 16 consist of two plates 15a and 15b and 16a and 16b fixed to both sides of pins 17 and 18, respectively.

The upper ends of the two plates 15 a and 15 b of the one arm 15 are connected to the tip of a rod 8 that extends and contracts from the cylinder body 3 a of the hydraulic cylinder 3 via a pin 9. Therefore, the arm 15 is rotated about the pin 17 as a fulcrum in accordance with the expansion and contraction operation of the rod 8. Further, the center bent portion of the two plates 15a and 15b of the arm 15 is rotatably connected to one end of the link 10 via a pin 11, and the other end of the link 10 is connected to the upper end of the arm 16 and the pin 12 via the pin 12. And rotatably connected. Therefore, the arm 16 is rotated around the pin 18 as a fulcrum via the arm 15 and the link 10 in accordance with the extension / contraction operation of the rod 8, and the arms 15 and 16 are used for the extension / contraction operation of the rod 8. Opening / closing operation is performed by approaching / separating accordingly.

The lower ends of the arms 15 (15 a, 15 b) and 16 (16 a, 16 b) are slightly protruded from the lower end of the housing 2, and a pair of fork members 25, 26 or another opposed member is provided at the lower end. A connection portion 30 with the member is formed. On the other hand, a connecting portion 40 for detachably connecting to the connecting portion 30 is formed at the upper ends of the fork members 25 and 26. That is, in the figure, the position indicated as the disassembly position is divided into the conventional unit.

Since the connecting portions 30 provided on the arms 15 and 16 have the same shape, and the connecting portions 40 of the fork members 25 and 26 have the same shape, the connecting structure between the arm 15 and the fork member 25 will be described. The description of the arm 16 and the fork member 26 will be omitted by using the same reference numerals.

As shown in FIG. 3 and FIG. 4, pin through holes 31A and 31B are formed at the communicating positions in the two plates 15a and 15b of the arm 15 facing each other. Further, pin insertion grooves 32A and 32B of side openings are formed at communication positions separated from the pin through holes 31A and 31B by a required dimension.

On the other hand, the fork member 25 connects the upper ends of the three holding claws 25b, 25c, and 25d at intervals on the lower surface of the upper end connecting member 25a. The other fork member 26 connects the two holding claws 26b and 26c at an interval to the lower surface of the upper end connecting member 26a, and when closed, holds the holding claws 26b and 26c between the holding claws 25b to 25d. Are engaged.

At the center of the upper end of the upper end connecting member 25a of the fork member 25, two brackets 41A and 41B are protruded at an interval, and pin through holes 42A and 42B communicate with the brackets 41A and 41B. The connecting pin 43 is connected and fixed at a position separated by a required dimension. As described above, the fork member 26 has the same configuration.

When the fork member 25 is connected and fixed to the arm 15, first, the connecting pin 43 connected and fixed between the brackets 41 A and 41 B of the fork member 25 is inserted into the pin insertion grooves 32 A and 32 B of the arm 4. I do. In this state, the pin through-holes 42A and 42B of the brackets 41A and 41B and the pin through-holes 31A and 31B of the arm 4 are connected in series, and the connecting pin 35 is inserted. A T-shaped stopper pin 36 is inserted into the orthogonal pin hole 35a from the other end and fixed. In this way, the pin insertion work and the pin fastening work are performed by aligning the pin through holes with the connecting pin 35 inserted and the fork member 25 temporarily held, thereby improving workability. The connecting pins may be bolts and fastened with nuts. Further, as described above, the fork member 26 is similarly connected and fixed to the arm 16 side.

In order to replace and attach to the arms 15 and 16, various opposing members are provided, and a pair of brackets are provided on these opposing members similarly to the fork members 25 and 26. And the connecting pins are attached, and can be replaced with the foam members 25 and 26 and attached to the arms 15 and 16.

FIGS. 5A to 5F show opposing members that are exchanged and attached to the arms 14 and 15. FIG. 5A shows fork members 25 'and 26' provided with two holding claws and one holding claw, respectively. FIG. 5B shows a pair of bucket members 50 and 51. The bucket members 50 and 51 can be applied to grip buckets, clamshell buckets, skeleton buckets, slope buckets, ready-mix buckets, and the like. FIG. 5C shows a pair of cutter members 52 and 53. These cutter members 52 and 53 intersect in an X shape, and the intersection is rotatably connected by a pin 55. In FIG. 5D, a pair of cutter members 56 and 57 which do not intersect in the X shape are provided as opposed members. FIG. 5E shows a pair of opposed members 58 and 59 of the crusher. FIG. 5F shows a pair of opposed members 60 and 61 of the rotary screen type bucket. A pair of opposing members for opening and closing the construction work attachments such as forks, buckets, cutters, and crushers are provided with brackets on the upper end members in the same manner as the fork members 25 and 26 so as to be attached to and detached from the arms 15 and 16. Pins for freely connecting and fixing are provided with through holes and connecting pins, so that they can be replaced and used if necessary.

As shown in FIGS. 6A and 6B, a chisel 62 of a breaker for drilling and an upper end of a screw 63 of an auger other than the attachment for construction work which performs the work by opening and closing the above. Support bars 62a, 63a extending horizontally to both sides are provided on both sides, and connecting portions 62b, 63b are provided at both ends of the support bars 62a, 63a to removably connect and fix to the pair of arms. Alternatively, it can be replaced with a screw 63 and attached.

When the chisel 62 of the breaker or the screw 63 of the auger is connected and fixed to the arms 15 and 16, the electric motor 24 is driven without driving the hydraulic cylinder 3 to rotate the chisel 62 or the screw 63. I am trying to make it.

FIGS. 7A to 7E show modified examples of the connection fixing portion of the first embodiment. In FIG. 7A, a pin through hole 31 and a pin insertion groove 32 formed in an arm are shown. Are vertically phased, and the positions of the pin through-holes 42 and the connecting pins 43 of the facing members 25 'and 26' are also vertically phased correspondingly. In FIG. 7B, the pin insertion groove 32 is bent into a J-shape to make it difficult for the connection pin 43 to come off. In FIG. 7C, after the connecting pin 43 is inserted into the pin insertion groove 32, the lid 65 is attached and fixed with the bolt 66 to prevent the connecting pin 43 from coming off. In FIG. 7D, after the connecting pin 43 is inserted into the pin insertion groove 32, the retaining pin 67 is inserted into the pin insertion groove 32. Needless to say, as shown in FIG. 7E, a pin through hole may be used instead of the pin insertion groove.

FIGS. 8 and 9 show a second embodiment, in which the coupling mechanism between the arms 15 and 16 and the opposing members including the fork members 25 and 26 is changed. That is, in the second embodiment, the arm 15 has a pin insertion groove 70 formed on one side thereof and a lever 72 provided with a pin insertion groove 71 opened on the other side. Is rotatably supported by a support shaft 73 between the two plates 15a and 15b of the arm 15. The lever 72 is provided with a screw hole 73, and a screw 74 is screwed into the screw hole 73 from a hole provided in a connecting plate 15c for connecting the two plates 15a and 15b of the arm. I try to move the position.

On the other hand, two connecting pins 75 and 76 are mounted on the brackets 41A and 41B of the fork members 25 and 26 at an interval. When attaching to the arm 15, one connecting pin 75 is inserted into the pin inserting groove 70, and then the other connecting pin 76 is inserted into the pin inserting groove 71 of the lever 72. Thereafter, the screw 74 is screwed in, and the position of the pin insertion groove 71 is separated from the pin insertion groove 70 so that the connecting pins 75 and 76 do not come off from the pin insertion grooves 70 and 71, respectively.

As described above, when the pair of connecting pins 75 and 76 are inserted into the pin insertion holes 70 and 71, respectively, the counter member such as the heavy fork member can be temporarily temporarily held on the arm 15 easily. After that, it is only necessary to connect and fix by screwing, so workability becomes very good.

FIGS. 10A and 10B show a third embodiment, in which a connecting piece 82 having protruding portions 80 and 81 protruding from both ends of arms 15 and 16 is provided, and one protruding portion 80 is inclined. It is sharp and sharp. On the other hand, a connecting portion between the opposing members 25 and 26 such as a fork member is provided with a bending portion 83 for fitting the inclined projecting portion 80 and a connecting portion 85 having a screw hole 84 at the other end. . In a state where the inclined protruding portion 80 is fitted to the bending portion 83, the other end protruding portion 81 is placed over the connecting portion 85, and a screw 87 is screwed into the screw hole 84 in a state where the L-shaped stopper 86 is overlaid on the protruding portion 81. It is connected and fixed by tightening.

FIGS. 11A and 11B show a modification of the third embodiment, in which a projection 88 having a bolt hole 84 ′ is provided at the other end of the facing member 25, 26, while the other end of the arm 14 is projected. A bolt hole 89 is provided in the portion 81, a bolt 90 is inserted into the bolt holes 84 ′ and 89, and the bolt is fastened and fixed with a nut 91.

In the third embodiment and its modification shown in FIGS. 10 and 11, the acute-angled projecting portions 80 of the arms 15 and 16 are fitted to the bending portions 83 of the facing member 54 and temporarily held, and in this state. Since the other end is fixed with screws, workability is good.

Further, the present invention is not limited to the above-described embodiment, and can be applied to a case where there are two hydraulic cylinders. In addition, the present invention can be applied to a configuration in which an arm portion operated by the transmission means and an operated portion such as a claw of a fork and a blade of a cutter are divided and detachably connected and fixed.

[0045]

[Effect of the invention]

 As is clear from the above description, according to the present invention, since the actuated members such as the fork blade and the cutter blade are detachably connected and fixed to the arm to be actuated, any member can be easily formed. Can be replaced with In addition, only two replacement parts are required, and replacement work can be performed quickly. Therefore, the attachment attached to the arm of the hydraulic power shovel can be easily changed to a fork, a cutter, a bucket, a crusher, a breaker, or an auger, etc., as required.

Further, since there is no replacement at a portion which is rotatably mounted on the shaft, there is an advantage that the reliability of the conductive portion is not impaired.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of the present invention.

FIG. 2 is a partial side view of FIG.

FIG. 3 is an exploded view of FIG.

FIG. 4 is a perspective view of a main part of the first embodiment.

FIGS. 5A to 5F are schematic diagrams showing another facing member of the first embodiment.

FIGS. 6A and 6B are schematic diagrams showing another opposing member of the first embodiment.

FIGS. 7A to 7E are schematic diagrams showing modified examples of the first embodiment.

FIG. 8 is a schematic front view of a main part of a second embodiment of the present invention.

FIG. 9 is a partial perspective view of FIG. 9;

FIGS. 10A and 10B are schematic diagrams of a third embodiment.

FIGS. 11A and 11B are schematic diagrams showing a modification of the third embodiment.

FIG. 12 is a front view of a conventional example.

FIG. 13 is a side view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connection member 2 Housing 3 Hydraulic cylinder 8 Rod 9, 11, 12, 17, 18 Pin 10 Link 15, 16 Arm 25, 26 Fork member 30, 40 Connection part 31, 42 Pin through hole 32 Pin insertion groove 41 Bracket 43 Connection pin

Claims (1)

[Utility model registration claims] 1. An arm of a power shovel and a housing are connected via a connecting member, a bracket of the connecting member is fixed to the arm, and a rotational driving means is mounted on the connecting member. An output shaft to be rotated is fixed to the housing, the housing is rotatable with respect to the connecting member, and a hydraulic cylinder is mounted on the housing, and a pair of arms are rotatably supported on the housing. The arms are opened and closed by the hydraulic cylinders, and a connecting portion is formed at each of the tips protruding from the housing of the pair of arms, and a pair of opposed arms such as forks, buckets, cutters, and crushers that are opened and closed are operated. A connecting portion is also formed at each upper end of the member, and these opposing members are selected, and the connecting portion is connected to the above-mentioned member. Arm connecting portion respectively respectively and detachably connected and fixed to the replaceable multifunctional attachment, characterized in that as the arrangement for operating integrally with the arm and the opposing member.