JP4576902B2 - Work vehicle - Google Patents

Description

  The present invention relates to a work vehicle used for sorting large waste such as discarded automobiles and construction waste.

  Conventionally, large-scale waste such as discarded automobiles and construction waste has been broken down by type and cut into a predetermined size and then recycled as resources. In order to perform this work efficiently, it is also called a demolition machine. A work vehicle is used. This working vehicle is usually a self-propelled lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and a bendable base end supported by the upper revolving body so as to be raised and lowered. A work attachment and a cutting machine attached to the tip of the work attachment are provided. It is also known that a presser for pressing the object to be disassembled is attached to the lower traveling body so as to be swingable in the vertical direction.

  In such a work vehicle, when a large and heavy cutting machine is attached to the tip of the work attachment in order to cut a large object to be disassembled, the work vehicle itself needs to be large in relation to the stability of the vehicle. There is. However, depending on the dismantling work site, there are cases where only a small work vehicle can be introduced, and in that case, there is a problem that a large cutting machine cannot be attached to the tip of the work attachment.

Therefore, in order to solve this problem, the present applicants attach a large cutting machine to the lower traveling body separately from the cutting machine attached to the tip of the work attachment. The thing which enabled cutting | disconnection is proposed, and it is already well-known (refer patent document 1). This Patent Document 1 also discloses that a large cutting machine is attached to a lower traveling body so as to be swingable in the vertical direction for the convenience of transporting a work vehicle by a trailer.
JP 2002-89057 A

  However, in the above-mentioned Patent Document 1, the cutting machine attached to the lower traveling body is such that the upper jaw and the lower jaw each having a cutting blade relatively open and close in the vertical direction. When cutting the dismantled object, it is necessary to always position the object to be disassembled, that is, the object to be cut, in a direction orthogonal to the opening / closing direction of the jaw (cutting blade) of the cutting machine.

The present invention has been made in view of the above points, and the problem is to increase the degree of freedom of operation when the working machine as a cutting machine is attached to the lower traveling body separately from the tip of the work attachment. Thus, a work vehicle capable of efficiently performing operations such as cutting is provided.

In order to solve the above-described problems, the invention according to claim 1 is directed to a lower traveling body capable of self-propelling as a work vehicle, an upper revolving body that is turnably mounted on the lower traveling body, and the upper revolving body. And a work attachment having a first work machine at the tip, and a second work machine attached to the lower traveling body. The second work machine has a cutting function for cutting the object to be disassembled and a gripping function for grasping the object to be disassembled, and can swing vertically with respect to the lower traveling body via the swinging body. Install . Further, a swiveling device is provided between the second working machine and the rocking body so that the second working machine can swivel with respect to the rocking body, and the turning direction of the second working machine is provided by the swiveling device. The configuration can be changed .

In this configuration, when working with the second working machine attached to the lower traveling body, the second working machine swings in the vertical direction as the swinging body swings, and the swiveling device operates. Since it is designed to pivot with respect to the rocking body, the work can be performed efficiently. For example when cutting a large object demolition material in a second working machine, it is possible to perform the cutting of the object to be disassembled object by changing the cutting direction by the turning of the second working machine without changing the position of the demolition material . Further, when the object to be disassembled is torn between the first work machine and the second work machine, the object to be disassembled is combined with the swinging and turning of the second work machine while holding the object to be disassembled by the first work machine. You can also tear up demolished items.

In the invention according to claim 1 , in addition to the above-described configuration, a predetermined ground height is secured in the non-turning portion on the swing body side of the swing body or the swing device when the second work implement is positioned closer to the ground. In order to enable rotation of the second work machine, a grounding member for grounding is provided. In this configuration, when the second work machine is located closer to the ground, the grounding member is grounded to support the second work machine, and the tipping fulcrum in the front-rear direction of the work vehicle is located more forward. Therefore, stability is remarkably improved. In addition, at this time, since the second working machine is turned while being maintained at a predetermined ground height, the working efficiency can be further improved without causing interference with the ground.

In the invention according to claim 1 , the grounding member is further constituted by a steel plate that is grounded over a predetermined distance in the width direction of the lower traveling body. In this configuration, when the lower traveling body is run while the grounding member is grounded, the grounding member functions as a dozer blade, and leveling and dust collection are performed.

The invention according to claim 2 provides one specific form of the rocking body in the work vehicle according to claim 1 . That is, the swinging body includes a pair of left and right swinging arms whose base ends are rotatably supported by the lower traveling body, a connecting frame that connects the distal ends of both swinging arms, and a front side from the connecting frame. And a first bracket that is connected via a connecting member such as a pin and a bolt, and a second bracket that protrudes downward from the connection frame, The other end of the cylinder, one end of which is supported by the lower traveling body, is connected to the second bracket of the swinging body, and the swinging body swings up and down by the expansion and contraction of the cylinder.

The invention according to claim 3 is the work vehicle according to claim 2, wherein the grounding member, a configuration of fixing by welding the second bracket. In this configuration, since the grounding member is fixed to the second bracket located closest to the ground surface among the rocking bodies, the height dimension of the grounding member can be made as small as possible.

The invention according to claim 4 is the work vehicle according to any one of claims 1 to 3 , wherein the second work machine has a cutting function and a gripping function suitable for dismantling work. provide. That is, the second working machine has a fixed jaw having a cutting blade and a gripping portion, a movable jaw that is provided so as to be able to open and close around a fulcrum with respect to the fixed jaw and has a cutting blade and a gripping portion as well. It is equipped with.

According to a fifth aspect of the present invention, in the work vehicle according to the fourth aspect , the fixed jaw and the movable jaw have a tapered shape in a closed state, and are opposite to the cutting blade and the gripping portion of each jaw. Protrusions are provided on the side grooves. In this configuration, when the fixed jaw and the movable jaw of the second work machine are closed, and the work to be cleaved is covered with a box-like demolition object such as a refrigerator, the fixed jaw and the movable jaw are in a closed state. Since the shape of the taper is tapered, the box-shaped object to be disassembled can be smoothly covered. In addition, when tearing the covered dismantled object by opening the fixed jaw and rotating jaws, it is difficult for the dismantled object to slide due to the protrusions of each jaw, so the object to be disassembled must be surely torn. Can do.

As described above, according to the work vehicle of the present invention, since the second work machine attached to the lower traveling body is provided so as to be swingable in the vertical direction and turnable, only the second work machine is provided. In both cases where the work to be cut is performed on the object to be disassembled, and the work to be removed such as tearing of the object to be disassembled is performed in cooperation with the first work machine at the tip of the work attachment. It is possible to improve work efficiency.

In addition, when the second work machine is positioned closer to the ground, the grounding member is grounded and the second work machine is supported, so that the stability of the work vehicle can be improved and the second work machine remains in the supported state. Since the working machine 2 can be turned, the working efficiency can be further improved.

Furthermore, when the lower traveling body is run while the grounding member is grounded , the grounding member exhibits a function as a dozer blade, and there is an effect that leveling and dust collection can be performed.

In particular, in the invention according to claim 3 , since the grounding member is fixedly provided to the second bracket located closest to the ground surface among the rocking bodies, the height dimension of the grounding member is made as small as possible. This is effective for implementation.

Further, in the invention according to claim 5 , when the second work machine not only has a cutting function and a gripping function, but also performs a work of tearing by covering the second work machine with a box-shaped object to be disassembled. Since the work can be performed smoothly and reliably, it is very effective for various dismantling work.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments that are the best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 shows an overall configuration of a work vehicle according to an embodiment of the present invention. Reference numeral 1 denotes a self-propelled crawler-type lower traveling body 1, which is provided on a lower traveling body 1 via a turning device 2. The upper swing body 3 is mounted so as to be swingable around a vertical axis.

  The upper swing body 3 is provided with a cab 4 that constitutes a cab, and a work attachment 5 is attached adjacent to the cab 4. This work attachment 5 is attached to the tip of the arm 6, the boom 6 whose base end is supported on the upper swing body 3 so as to be raised and lowered, the arm 7 connected to the tip of the boom 6 so as to be bent. And a gripping device 8 as a first working machine. In this gripping device 8, a pair of rotary forks 8a and 8a are opened and closed around the support pins 8c by expansion and contraction of the hydraulic cylinder 8b to grip and release the workpiece. The mounting angle around the connecting pin 9 with respect to the arm 7 is changed by the hydraulic cylinder 10, and the orientation of the rotary forks 8a, 8b when the gripping device 8 is suspended is changed by the turning device 11, respectively.

  A front side of the lower traveling body 1 is equipped with a second working machine 20 larger than the gripping device 8. The second working machine 20 is attached to the lower traveling body 1 so as to be able to swing in the vertical direction via the swinging body 40, and between the second working machine 20 and the swinging body 40, the second working machine 20 is mounted. A swiveling device 60 is provided for allowing the second work machine 20 to swivel with respect to the rocking body 40.

  2 and 3, the second working machine 20 includes a fixed jaw 23 having a cutting blade 21 and an uneven gripping portion 22, and a support pin as a fulcrum for the fixed jaw 23. A movable jaw 27 that is provided so as to be capable of opening and closing around 24 and has a cutting blade 25 and an uneven gripping portion 26 as well as a fixed jaw 23, and a hydraulic cylinder 28 that opens and closes the movable jaw 27 are provided. . The main body side of the hydraulic cylinder 28 is swingably supported by a fixed jaw 23 via a support pin 29, and the tip of a piston rod 28a is connected to a movable jaw 27. When the hydraulic cylinder 28 is extended, a solid line in FIG. As shown in FIG. 2, when the movable jaw 27 is closed and the cutting blade 21 and the gripping portion 22 of the fixed jaw 23 overlap with the cutting blade 25 and the gripping portion 26 of the movable jaw 27, respectively, while the hydraulic cylinder 28 contracts, the phantom line in FIG. The movable jaw 27 opens with respect to the fixed jaw 23 as shown in FIG. The fixed jaw 23 and the movable jaw 27 are tapered in a closed state, and the distal ends of the jaws 23 and 27 are on the side opposite to the cutting blades 21 and 25 and the gripping portions 22 and 26, respectively. A plurality of (three in the figure) projections 30, 30,... Are provided on the side.

  The fixed jaw 23 of the second working machine 20 is provided with a hood portion 31 for protecting the hydraulic cylinder 28 and the turning device 60 is attached. The swivel device 60 includes a swivel plate 61 fixed to the fixed jaw 23, a mounting plate 63 opposed to the swivel plate 61 with a swivel gear mechanism 62 interposed therebetween, and the swivel gear mechanism attached to the mounting plate 63. 62 and a hydraulic motor 64 coupled so as to be capable of transmitting power. By the operation of the hydraulic motor 64, the turning plate 61 side turns with respect to the mounting plate 63 side. A pair of brackets 65 and 65 and a swivel joint 66 for connecting to the rocking body 40 are provided on the mounting plate 63 side.

  On the other hand, as shown in FIG. 4, the rocking body 40 has a pair of left and right rocking arms 43 each having a base end rotatably supported by a base frame 41 of the lower traveling body 1 via a support pin 42 or the like. , 43, a connecting frame 44 that connects the ends of the swing arms 43, 43, and a pair of upper and lower first brackets 45, 45 (see FIG. 5) and a pair of left and right second brackets 46, 46 provided to project downward from the central portion of the connecting frame 44 in the width direction. The pair of first brackets 45 and 45 are connected by inserting two connecting pins 47 and 47 as connecting members in a state of being overlapped with the pair of brackets 65 and 65 on the turning device 60 side. Further, the tip of the piston rod 48a of the hydraulic cylinder 48 is connected to the pair of second brackets 46, 46 via a connecting pin 49, and the bottom side of the main body of the hydraulic cylinder 48 is the base frame 41 of the lower traveling body 1. Are supported via a support pin 50 and a mounting bracket 51. The support pin 50 on the bottom side of the main body of the hydraulic cylinder 48 is provided at a position higher than the support pin 42 on the base end side of the swing arm 43. When the hydraulic cylinder 48 is extended, as shown by a solid line in FIG. 1, the swinging body 40 and the second work machine 20 are positioned closer to the ground, and when the hydraulic cylinder 48 contracts from this state, the phantom line is shown in FIG. Thus, the rocking body 40 and the second working machine 20 are rotated upward.

  Further, the pair of second brackets 46, 46 of the rocking body 40 includes a hood positioned at the lowest position in the second working machine 20 when the second working machine 20 is turned near the ground. A grounding member 52 that is grounded is provided to hang down in order to ensure a predetermined ground height h so that the portion 31 does not interfere with the ground. As shown in FIGS. 4 and 5, the grounding member 52 is along a predetermined distance in the width direction of the lower traveling body 1 (in the figure, the distance between the pair of left and right swing arms 43, 43 of the swing body 40). It is made of a horizontally long rectangular steel plate that comes into contact with the ground, and is fixed to each of the second brackets 46 by welding at the center of the upper edge thereof.

  Therefore, in the work vehicle according to the above-described embodiment, when the work is performed by the second work machine 20 attached to the lower traveling body 1, the second work machine 20 moves in the vertical direction as the rocking body 40 swings. In addition to swinging, the swinging device 60 is swung with respect to the swinging body 40, so that the work can be performed efficiently. For example, when a large work piece is to be cut by the second work machine 20, the work piece is cut by changing the cutting direction by turning the second work machine 20 without changing the position of the work piece. Can do. In addition, when the object to be disassembled is torn off by the gripping device 8 of the work attachment 5 and the second work machine 20, a combination of swinging and turning of the second work machine 20 while holding the object to be disassembled by the gripping apparatus 8. Therefore, the object to be disassembled can be torn off, and the work efficiency can be improved.

  Further, when the second work machine 20 is located near the ground, the grounding member 52 provided on the rocking body 40 is grounded to support the second work machine 20, and a fall fulcrum in the front-rear direction of the work vehicle is provided. Since it will be located further forward, the stability of the work vehicle can be significantly increased. In addition, at this time, the second working machine 20 is maintained at a predetermined ground height h even in the hood portion 31 located closest to the ground, and can turn, so that the work efficiency does not interfere with the ground. Can be further improved.

  Furthermore, since the grounding member 52 is made of a steel plate that is grounded for a predetermined distance in the width direction of the lower traveling body 1, when the lower traveling body 1 travels while the grounding member 52 is grounded, the grounding member 52 is It can function as a dozer blade to perform leveling and garbage collection. In addition, since the grounding member 52 is fixed to the second bracket 46 located closest to the ground surface in the rocking body 40, the height dimension of the grounding member 52 can be made as small as possible. This is advantageous in terms of implementation in terms of cost.

  In addition, since the second working machine 20 exhibits the cutting function of the fixed jaw 23 and the rotating jaw 27 by the cutting blades 21 and 25 and the gripping function by the gripping portions 22 and 26, it is optimal for dismantling work. is there. In addition, the fixed jaw 23 and the movable jaw 27 have a tapered shape in a closed state, and the opposite sides of the cutting blades 21 and 25 and the gripping portions 22 and 26 of the jaws 23 and 27 are on the near side. Are provided with a plurality of protrusions 30, 30,..., So that the fixed jaw 23 and the movable jaw 27 of the second working machine 20 are closed, and this is covered with a box-shaped object to be disassembled such as a refrigerator. When the tearing operation is performed, the object to be disassembled can be smoothly covered with the fixed jaw 23 and the movable jaw 27. Further, when the covering object to be disassembled is torn by opening the fixed jaw 23 and the rotating jaw 27, the object to be dismantled is not easily slipped by the projections 30 of the jaws 23 and 27, so that the object to be disassembled is torn. Can be performed reliably.

  In addition, this invention is not limited to the said embodiment, A various other form is included. For example, in the above embodiment, the grounding member 52 for securing a predetermined ground height h when the second work machine 20 is located near the ground is the second bracket 46 located closest to the ground in the rocking body 40. However, in the present invention, instead of the second bracket 46, other members of the oscillating body 40, for example, a pair of left and right oscillating arms 43 and 43 are provided with a grounding member having a lateral width larger than that of the embodiment. Alternatively, a grounding member may be provided on the bracket 65 or the like which is a non-turning portion on the swing body 40 side of the turning device 60. The form of the ground member may be a columnar stand.

  Moreover, in the said embodiment, as the rocking | swiveling body 40 for attaching the 2nd working machine 20 to the lower traveling body 1 so that rocking | fluctuation is possible, a base end is each supported by the lower traveling body 1 so that rotation is possible. In the present invention, a support frame having a base end fixed to the lower traveling body 1 is provided in place of the swing arms 43 and 43, and a bracket is provided at the tip of the support frame. For example, the second work machine 20 may be swingably attached via the above.

Furthermore, the present invention provides, as a first working machine attached to the tip of the working attachment 5, not only the gripping device 8 of the rotating fork type as in the above embodiment, it is given a course by using a cutting machine is there.

It is a side view showing the whole work vehicle composition concerning the embodiment of the present invention. It is a side view of the 2nd working machine and turning apparatus which are the principal parts of the said working vehicle. It is the same top view. It is a top view of the rocking | swiveling body vicinity which is the principal part of the said working vehicle similarly. It is an expanded sectional view in the XX line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lower traveling body 3 Upper revolving body 5 Work attachment 8 Gripping device (1st working machine)
20 Second working machine 21, 25 Cutting blade 22, 26 Gripping part 23 Fixed jaw 24 Support pin (fulcrum)
27 Movable jaw 30 Protruding part 40 Oscillating body 43 Oscillating arm 44 Connecting frame 45 First bracket 46 Second bracket 47 Connecting pin (connecting material)
48 Hydraulic cylinder 52 Grounding member 60 Rotating device 65 Bracket

Claims (5)

A self-propelled lower traveling body, an upper revolving body rotatably mounted on the lower traveling body, a work attachment having a base end supported by the upper revolving body, and having a first working machine at a distal end; In a work vehicle including a second work machine attached to the lower traveling body,
The second working machine has a cutting function for cutting the object to be disassembled and a gripping function for grasping the object to be disassembled, and is attached to the lower traveling body so as to be swingable in the vertical direction via the rocking body. It is and,
A swiveling device is provided between the second work machine and the rocking body so that the second work machine can swivel with respect to the rocking body, and the turning direction of the second work machine is determined by the swiveling device. Can be changed,
A non-turning portion on the swing body side of the swing body or the swing device is provided to ensure a predetermined ground height and enable the second work machine to turn when the second work machine is positioned closer to the ground. A work vehicle comprising a grounding member for grounding, the grounding member being made of a steel plate that is grounded over a predetermined distance in a width direction of the lower traveling body . The oscillating body includes a pair of left and right oscillating arms whose base ends are rotatably supported by the lower traveling body, a connecting frame that connects the distal ends of both oscillating arms, and a forward projecting from the connecting frame. A first bracket connected to the bracket on the swivel device via a connecting member, and a second bracket provided to protrude downward from the connecting frame. 2. The work vehicle according to claim 1, wherein the other end of the cylinder, one end of which is supported by the lower traveling body, is connected, and the swinging body swings in the vertical direction by expansion and contraction of the cylinder . The work vehicle according to claim 2 , wherein the grounding member is fixed to the second bracket by welding . The second working machine has a fixed jaw having a cutting blade and a gripping portion, a movable jaw having a cutting blade and a gripping portion that are provided so as to be capable of opening and closing rotation around a fulcrum with respect to the fixed jaw and having the same cutting blade and gripping portion. The work vehicle according to any one of claims 1 to 3, which is provided. 5. The fixed jaw and the movable jaw have a tapered shape in a closed state, and a projection is provided on each of the jaws opposite to the cutting blade and the gripping portion. Work vehicle.

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