WO1996006989A1

WO1996006989A1 - Swing construction vehicle

Info

Publication number: WO1996006989A1
Application number: PCT/JP1995/001685
Authority: WO
Inventors: Kazuo Otsuka; Masao Kato
Original assignee: Komatsu Ltd.
Priority date: 1994-08-29
Filing date: 1995-08-25
Publication date: 1996-03-07
Also published as: JPH0868075A

Abstract

A swing construction vehicle capable of longitudinally changing the position in which a working machine is fixed on an upper swing body, fixing various kinds of working machines on the swing body of one vehicle, and improving the operation efficiency. Above the upper swing body (1) and between an operator's cabin (4) and a machine cab (3), a through space (S) is formed to enable a working machine (14) to be moved in the through space (S) from a front end to a rear end of the upper surface of the upper swing body (1). A swing link mechanism (24) may be provided on a working machine (27A), and the working machine (27A) may be moved by swinging the same longitudinally.

Description

Description Swiveling construction vehicle Technology field

The present invention relates to a revolving construction vehicle, and more particularly, to an arrangement and structure of an operator's cabin, a machine cabin, and a kayak weight of an upper revolving structure, and a mounting structure of a working machine. Background technology

Regarding the conventional revolving construction vehicle, the structure of the upper revolving structure and the attachment structure of the working machine will be described with reference to FIGS. 13 to 17. FIG.

As shown in FIG. 13, the conventional swing type construction vehicle has an upper swing body 70 provided above the lower traveling bodies 71 and 71. The upper revolving unit 70 is provided with a machine cabinet 73 for mounting the engine 73 a and the like, an operator's cabin 72, and an integrally formed power center 74. Brackets 70a, 70a are fixed to the front of the upper revolving unit 70, and the booms 75 and the boom cylinders 76, 7 are attached to the brackets 70a, 70a. 6 is attached. The boom 75 is connected to the arm 770 at the tip and is vertically swingable by a boom cylinder 76. The arm 77 has a tip connected to a baggage 79 and is vertically swingable by an arm cylinder 78. Further, the bucket 79 is connected to the bucket cylinder 80 via the tilt lever 80a and the link 80b, and is rotatable by the expansion and contraction of the bucket cylinder 80. Has become. As described above, the working machine 81 includes the boom 75, the arm 77, the bucket 79, and the cylinders 76, 78, and 80.

In FIGS. 15 and 16A, the outer cylinder 90a of the swivel joint 90 is fastened to the protruding portion 70b of the upper rotating body 70 by the bolt 90b, and Turning It protrudes upward from body 0. The inner cylinder 90c of the swivel joint 90 is fastened to the frame 93 of the lower traveling body T1 by means of a bolt 90d. In addition to being fixed to 70b, the swing gear 92a is held via a ball bearing 92b. A swivel joint 90 is arranged in the swivel circle 92, and the outer cylinder 90 a rotates together with the upper swing body 70 by driving a swing motor 91 described later. On the other hand, the inner cylinder 90 c is fixed to the frame 93 of the lower traveling body 71, so that hydraulic oil from a pump (not shown) can be supplied to the traveling motor.

In FIG 1 6 B, the turning motor Isseki 9 1, also _c by bolts Bok 9 1 b together are fastened to the protrusion 7 0 c of the upper frame 7 0, protrude from the upper slewing body 7 0 upward The revolving circle 92 is fixed to the protruding portion 70c and holds the revolving gear 92a via a ball bearing 92b. The swing gear 92 a is combined with a pinion 91 a of the swing motor 91, and is fixed to a frame 93 of the lower traveling body 71. Further, the upper revolving superstructure 70 can be driven to rotate by driving a turning motor 91.

FIG. 17 shows a revolving construction vehicle similar to the above, in which a work implement 81 is attached to a bracket 70 a that is fixed to the front of the upper revolving body 70. A swivel joint 90 and a swivel module 91 are mounted in a swivel circle 92 substantially at the center of the upper swing body 70. It protrudes upward from the upper surface. Further, on the upper revolving superstructure 70, an engine 73a and a counterweight 74 are mounted behind the revolving motor 91. The frame 93 of the undercarriage 71 is fixed to a revolving gear 92a (see FIGS. 16A and 16B).

However, in such a conventional swing type construction vehicle, the swivel joint 90 and the swing motor 91 project upward, the engine 73a is placed at the rear, and the counterweight 74 is located at the rear. Since it is installed, the bracket 70a to which the work machine 81 is attached is restricted by being installed at the front of the upper revolving unit 70. Due to this restriction, the work implement 81 is installed at the front of the upper revolving unit 70, and as shown in Fig. 14, the distance from the center of the starting wheel 71a to the cutting edge of the bucket 79 L f increases. Here, assuming that the distance between the center of the starting wheel 71a and the perpendicular G1 from the center of gravity G of the swing construction vehicle is Lw, and the weight of the swing construction vehicle is W, the bucket 79 is pressed. The force F becomes F = (L / Lf) W. Assuming that the distance from the center of the idler wheel 71 b to the center of gravity G is L i, the excavating force P of the baguette 79 is P = L i · WZ i L f-(L i + L w)}. Become. That is, the conventional turning construction vehicle has a problem that the pressing force F and the excavating force P are small at the maximum reach because the distance L f is large.

In order to increase the pressing force F and the excavating force P, measures such as reducing the distance L f by using a contracted short arm have been taken, but the overall work equipment has not been shortened. Therefore, another problem arises in that deep excavation work such as a shaft cannot be performed. In addition, since the boom 75, which is the base end of the work machine 81, is attached to the front of the upper revolving unit 70, the field of view on the right side of the operator cabin 4 is blocked by the boom Ί5. There is a problem that gets worse.

Further, as another prior art, Japanese Patent Publication No. 3-5101115 (lifting force) provided with a telescopic working machine (international publication number: WO89Z00) 9 72 2). This technology cites the following lift truck as prior art. That is, the lift track of the anterior branch operation includes a wheel mounting structure that supports the lift arm at the rear, an operation / operating cab mounted on one side of the structure, And an internal combustion engine. The internal combustion engine is located in the housing opposite to the operation and cab, and is located in a housing having a width at least equal to the width of the lift arm between the operation and the cab. I have. In addition, the lift arm is pivoted to the track structure so that it is partially accommodated between the gaps in a completely lower position, so as not to obstruct the view of the operator working in the operator's cab. Supported.

In such a prior art lift track, the lift track described in the above-mentioned publication is designed so that the lift force of the internal combustion engine is parallel to the axis in the vehicle length direction of the track. In addition, the internal combustion engine is arranged in the housing in the longitudinal direction. In other words, the lift truck In operation, an operator's cab was installed on the structure for mounting the wheels, and this operation was performed.An internal combustion engine was installed on the opposite side of the operator's cab.Operation It is a thing.

However, according to the lift truck, the fork-shaped tool can be extended and retracted forward and backward by the lift arm, but the fork is operated upward from the ground. There is a problem that it is not suitable for excavation work. In addition, because it is a wheel-type track, it is necessary to change the direction of the lift arm and perform operations to turn the steering of the track many times. There was a problem of bad. Disclosure of the invention

The present invention has been made in order to solve the problems of the related art, and enables a mounting position of a working machine on an upper revolving body to be moved back and forth in a vehicle length direction, so that a single vehicle can be used. It is an object of the present invention to provide a turning construction vehicle capable of mounting various types of working machines and improving workability.

In the swiveling construction vehicle according to the present invention, an operator cabin is mounted on one side in the vehicle width direction of the upper revolving structure, and a machine cabin is arranged on the opposite side of the operator cabin. In a revolving construction vehicle with a work machine mounted between it and the upper revolving structure, a through space is formed between the operator cabinet and the machine cabinet, and the work machine is positioned at the front end on the upper revolving structure. It is characterized in that the through space can be moved from the part to the rear end. At the rear end on the upper revolving structure, there is a counterweight that forms a notch that opens into the through space, and this notch prevents interference between the work equipment and the counterweight. It may be.

Further, it may include a rail laid on the upper swing body in the through space, a movable bracket mounted on the work machine, and a moving means that allows the movable bracket to move along the rail. It is desirable that at least one pair of brackets be provided on both sides in the vehicle width direction of the through space on the upper revolving structure, and that the pair of brackets attach work implements. Further, the work implement may be provided with a swing link mechanism, and the swing link mechanism may swing the work implement forward and backward in the vehicle length direction so that the work implement is in the working posture or the storage posture. Further, a swing gear fixed to a lower portion of the upper swing body, a swing circle provided below the upper swing body and rotatable with the swing gear, and a lower traveling body fastened to a lower portion of the swing circle. A frame, a swivel joint installed inside the swivel circle and having an outer cylinder and an inner cylinder, and a swivel motor installed inside the swivel circle and having a pinion that engages with the swing gear. The outer cylinder and the lower traveling frame are fixed to each other, and the inner cylinder and the upper revolving structure are fixed to each other, and the swivel joint and the revolving motor are arranged below the upper surface of the upper revolving structure. Desirable.

According to this configuration, the work implement can be arbitrarily moved on the upper revolving unit. Therefore, for example, when performing heavy excavation in accordance with various operations, the work implement is moved to the rear part on the upper revolving unit. Due to this movement, the distance from the center of the starting wheel to the cutting edge of the baguette is reduced, and the pressing force and excavating force of the baguette and the like are increased. On the other hand, when a large work equipment maximum reach is required for deep excavation work, leveling work, etc., a large maximum reach can be obtained by moving the work equipment to the front on the upper revolving unit. In addition, since the vehicle of the present invention is a turning type construction vehicle, the working machine can both turn 360 ° and move in the vehicle length direction, thereby improving workability in various works. By forming a notch in the counterweight provided in the upper revolving structure, it is possible to ensure both workability by preventing interference with the work equipment and an appropriate vehicle balance.

In addition, when the work equipment moves along the rails, it is possible to work at the appropriate work equipment position, and when the work equipment is located at the rear of the upper revolving unit, the visibility to the right of the operator cabin is good. As a result, good workability can be obtained. If a bracket is provided in the through space of the upper revolving structure, for example, if it is installed at two places, the front and the rear, the work equipment can be moved according to the work, and two different types of work equipment can be attached. it can. In addition, if an automatic link mechanism is provided, the work machine can be easily moved to any position in the front-rear direction, so that an appropriate work machine installation position can be obtained for various operations, and the work machine can be moved to the rear. By doing so, the vehicle height is low, and a short overall storage position can be obtained.

Furthermore, when the swivel joints and the like are located below the upper surface of the upper revolving structure, there is no upward projection from the upper revolving structure, so that the position of the machine cabinet and the like on the upper revolving structure can be freely set. This makes the layout design easier. BRIEF DESCRIPTION OF THE FIGURES

1A to 1C are schematic views of a swing type construction vehicle according to an embodiment of the present invention, FIG. 1A is a perspective view of the entire vehicle when a work machine is not mounted, FIG. 1B is an upper swing body and FIG. 1C is a perspective view of the operator cabin, and FIG.

FIGS. 2A to 2D are power weights according to the present embodiment, FIG. 2A is an explanatory view of a mounted state, FIGS. 2B to 2D are explanatory views of some example shapes,

FIG. 3 is a schematic plan view of the swing construction vehicle according to the present embodiment,

FIG. 4A is a cross-sectional view taken along the line CC of FIG. 3 and illustrates the mounted state of the swivel joint. FIG. 4B is a cross-sectional view taken along the line DD of FIG. 3 and illustrates the mounted state of the swing motor. FIG. 5 is a schematic side view of the swing construction vehicle according to the present embodiment,

FIG. 6 is a side view of the first working machine attachment structure according to the present embodiment,

7A and 7B are diagrams of a second working machine attachment structure according to the present embodiment, where FIG. 7A is a side view, FIG. 7B is a main part plan view,

8A and 8B are diagrams of a third working machine mounting structure having a link mechanism according to the present embodiment, where FIG. 8A is a side view at the time of work, and FIG. FIG. 9 is a diagram of the fourth working machine attachment structure according to the present embodiment, and is a side view of the fork-shaped attachment when attached.

FIG. 10 is a diagram of a fifth working machine attachment structure according to the present embodiment, and is a side view of the handling arm at the time of attachment.

FIGS. 11A and 11B are diagrams of a sixth working machine attachment structure according to the present embodiment, FIG. 11A is an operation explanatory view of a working machine having a moving means, and FIG. Fig. 11 View of arrow A in 1A FIGS. 12A and 12B are diagrams of a seventh working machine mounting structure according to the present embodiment, where FIG. 12A is a side view of the crane in a working posture, and FIG. 12B is a retracted posture. Fig. 13 is a perspective view of a swing type construction vehicle according to the prior art.

FIG. 14 is an explanatory view of a case where the work implement mounting position is at the front of the upper revolving superstructure according to the prior art, and FIG.

FIG. 16A is a sectional view taken along the line A-A of FIG. 15;

FIG. 16B is a cross-sectional view taken along the line B-B in FIG.

FIG. 17 is a side view of a main part of a swing type construction vehicle according to the related art. BEST MODE FOR CARRYING OUT THE INVENTION

Preferred embodiments of the swing type construction vehicle according to the present invention will be described below in detail with reference to the accompanying drawings.

1A to 1C show a swing type construction vehicle according to the present embodiment, in which a lower traveling body 2 is provided below an upper revolving body 1 and can travel freely by a traveling motor (not shown). . The upper revolving superstructure 1 has an operator cabin 4 mounted on one side Y 1, and a machine cabinet 3 disposed on the opposite side of the operator cabin 4. The engine 3 has an engine 3a and a hydraulic device 3b, and a rear side of the machine 3 is equipped with a right-side power supply weight 6 cl. In addition, behind the operator cabin 4, there is a tank cap 5 on which a fuel tank and a hydraulic oil tank are mounted. A left counterweight 6c2 is mounted behind the tank cabin 5. That is, the counterweight 6c is a split type composed of left and right counterweights 6cl and 6c2. Therefore, the upper part of the upper revolving superstructure 1 is provided on one side Y1 with the operator cabin 4c. Attach the machine head 3 and the right side power outlet 6 cl to the other side (the other side Y 2) of the operator cabin 4 with the evening cabin 5 and the left side power outlet 6 c2. As a result, a through space S is formed at an intermediate portion in the vehicle width direction X. This message A working machine, which will be described later, is mounted in the space S, and the working machine is movable from the front end 1 L to the rear end 1 M on the upper rotating body 1 _c

FIG. 2A to FIG. 2D are power weights of the present embodiment. In addition to the counter weight 6c, the counter weights 6a and 6b can be applied as necessary. The counterweight 6a has a notch opening on the front end 1L side of the upper swing body 1, and the counterweight 6b has a notch opening upward. By attaching these counterweights 6a, 6b, 6c, a through space is provided between the machine cabin 3 side and the operator cabin 4 and tank cabin 5 side. S is formed. That is, the counterweights 6a, 6b, and 6c are selected to have a shape that does not interfere with the working machine mounted in the through space S.

In FIG. 3, the upper revolving superstructure 1 has an engine 3a mounted vertically on the other side Y2, and a pair of left and right brackets 1a, la in the vehicle width direction X at the front and rear. And brackets 1b, 1b are fixed respectively. A predetermined space is set between each of the brackets 1a, 1a and 1b, 1b to secure a through space S. A swing circle 7 is provided below the upper swing body 1, and a swivel joint 8 and a swing motor 9 are mounted in the swing circle 7. In FIG. 4A, the swivel joint 8 is composed of an outer cylinder 8a and an inner cylinder 8b that are rotatable relative to each other, and has a protruding portion 8c substantially at the center of the surface of the outer cylinder 8a. It is fixed. The projecting portion 8c of the outer cylinder 8a is fastened to the frame 12 of the lower traveling structure 2 by the bolt 11 and the lower portion of the outer cylinder 8a projects inside the frame 12 ing. On the other hand, the inner cylinder 8b and the protruding portion 1c of the upper rotating body 1 are fastened and fixed by bolts 1Oa.1Ob via the fixed plate 10. Further, the turning circuit 7 is fixed to the frame 12 and holds a turning gear 7a via a ball bearing 7b.

The swivel joint 8 of the present embodiment is arranged as described above, and does not protrude from the upper surface of the upper rotating body 1 as is clear from FIG. 4A. The inner cylinder 8b is rotated together with the upper revolving unit 1 by the rotation motor 9 (see FIG. 4B). 8a does not rotate because it is fixed to frames 1 and 2. The outer cylinder 8 a supplies hydraulic oil from a pump (not shown) to a traveling motor (not shown) of the lower traveling unit 2.

In FIG. 4B, the swing motor 9 is fastened to the projection 12a of the frame 12 by a plurality of bolts 9b, and the pinion 9a of the swing motor 9 is combined with the swing gear Ίa. ing. Also, the turning gear 7 a force <, are fixed to 1 the lower surface upper swing structure, an upper swing structure 1, by _e this arrangement is pivotable by the drive of the swing motor 9, as is apparent from FIG. 4 B In addition, the swing motor 9 does not protrude from the upper surface of the upper swing body 1.

In FIG. 5, a boom 15 and a boom cylinder 16 are attached to the pair of brackets 1a (see FIG. 3). A boom 15 and a boom cylinder 16 can also be attached to a pair of brackets 1 b at the rear of the upper revolving superstructure 1. Although the brackets 1a and 1b have been described as being installed at two locations on the upper revolving superstructure 1 at the front and rear, the brackets 1a and 1b are shown in Fig. 1B from the front end 1L on the upper revolving superstructure 1 to the rear end. At any position up to the section 1M, three or more places may be provided so that the boom 15 or the like can be attached to each.

Next, the attachment configuration of the working machine to the through space S according to the present embodiment will be described in detail below.

Fig. 6 shows the mounting structure of the first work implement, in which the boom 15 and the boom cylinder 16 of the work implement 14 are located between a pair of brackets 1b, 1b at the rear of the upper swing body 1. Is installed. The boom 15 can be swung up and down by driving the boom cylinder 16. An arm 17 that can swing up and down by an arm cylinder 18 is connected to the end of the boom 15, and a bucket 19 is connected to the end of the arm 17. The tilt lever 20a has one end connected to the arm 17 and the other end connected to one end of the bucket cylinder 20 and one end of the link 20b. The other end of the link 2 Ob is connected to a bucket 19. As a result, the knob 19 can be rotated by expanding and contracting the baguette cylinder 20 as in the conventional case.

Regarding the work machine 14 at this attachment position, the pressing force F and the excavating force P of the baguette 19 are explain about. Work implement 14 in FIG. 6 shows the maximum reach state, similarly to work implement 81 (see FIG. 14) described in the related art. Here, the distance from the center of the starting wheel 2a to the cutting edge of the bucket 19 is LΠ, the weight of the revolving construction vehicle is W, the distance between the center of the starting wheel 2a and the perpendicular G1 is Lw, Assuming that the distance between the center of the wheel 2b and the perpendicular G1 is L i, the weight W, the distance L w, and the distance L i are almost the same as those of the conventional turning type construction vehicle.

However, since the attachment position of the work machine 14 is at the rear of the upper revolving unit 1, the distance L is significantly different from the conventional distance Lf and is small. That is, the turning type construction vehicle of the present embodiment can obtain a larger pressing force F and a larger excavating force P as compared with the conventional construction vehicle. At the time of work, work machine 14 is attached to the front.On the other hand, when large pressing force F and excavation force P are required, for example, when excavating hard ground, work machine 14 is attached to the rear. By doing so, it is possible to perform optimal work.

FIG. 7A and FIG. 7B are views showing a second working machine mounting structure of the present embodiment, in which a pair of brackets 1 c, lc and I d, 1 d are provided at substantially the center of the upper swing body 1. d is fixed. The brackets 1c and 1c attach the boom 15 via the pin 15a and the boom cylinder 16 via the pin 16a. The brackets I d and I d are attached to the base boom 21 a of the crane 21 via the pin 21 b and the lift cylinder 22 via the pin 22 a. One end is attached. The other end of the lift cylinder 22 is attached to the base boom 21a. The telescopic boom 21c attached to the base end boom 21a expands and contracts by the cylinder 21d. The hook 21e attached to the tip of the telescopic boom 21c can be moved up and down freely by winding a winch cable (not shown). The boom 15 and the base end boom 21a of the crane 21 are provided on the upper swing body 1 in the through space S in the same manner as in the above embodiment. Excavation work and lifting work with crane 21 are possible with one turning construction vehicle. Each of the brackets 1c, lc and 1d, 1d can be attached to an arbitrary position in the through space S. Work equipment 14 etc. may be attached as a body bracket.

FIGS. 8A and 8B show a third working machine mounting structure according to the present embodiment, in which a pair of brackets 1 e are fixed to a substantially central portion of the upper swing body 1. The first link 25 is attached to the bracket 1e by the pin 25a, and the tip of the first link 25 and the boom 27 of the work machine 27A are strongly connected. Connected by b. Boom 27 and one end of boom cylinder 26 are connected with pin 26a, and the other end of boom cylinder 26 is connected with first link 25 and pin 26b. Ri _c by the this you are, boom 2 7, by expansion and contraction of Bumushi Li Sunda 2 6 is vertically swingably.

The arm 28 attached to the end of the boom 27 has a bucket 30 attached to the end, and is swingable up and down by an arm cylinder 29. The tilt lever 31 a has one end connected to the arm 28 and the other end connected to the baguette cylinder 31. Further, the tilt lever 31a is connected to one end of a link 31b, and the other end of the link 31b is connected to a bucket 30. Thereby, the baguette 30 can be rotated by the expansion and contraction of the baguette cylinder 31.

Also, one end of the second link 32 is connected to the bracket 1e by the pin 32a, and the other end of the second link 32 is connected to the third link 3 via the pin 32b. 3 and one end of the oscillating cylinder 34. The other end of the third link 33 is connected to the first link 25 by a pin 33a, and the other end of the oscillating cylinder 34 is connected to a pair of brackets 1 fixed to the upper rotating body 1. f and pin 34a. In this work machine mounting structure, the work machine 27 A is moved forward and backward by the swing link mechanism 24 including the second link 32, the third link 33, and the swing cylinder 34. According to the third working machine mounting structure described above, the working machine 27 A can be moved up to the maximum reach for excavation work (deep digging, grooving, etc.). ) Is possible by extending the automatic cylinder 34. That is, by this extension, the third link 33 is pushed forward via the second link 32, and the first link 25 is also pushed forward, so that the boom 27 is moved downward. In operation, work implement 27 A is at maximum reach. Therefore, the work equipment 27 A The switch can be changed freely, and the work range is expanded and workability is improved.

When the automatic cylinder 34 is shortened after the work is completed, the work machine 27A is moved backward by the reverse operation, and the retracted state is obtained as shown in FIG. 8B. The work machine 27A stored in this manner is lower than the height of the operator cabin 4 and can be transported without disassembly even if the height is restricted during transportation. In addition, parking is possible even in narrow spaces inside the building T.

FIG. 9 is a fourth working unit mounting structure diagram of the present embodiment, in which a pair of brackets 1 g are fixed to the rear part of the upper rotating body 1. The bracket 1g is connected to the base arm 35a of the arm 35 by a pin 35c, and is connected to one end of the lift cylinder 36 by a pin 36a. The other end of the lift cylinder 36 is attached to the base arm 35a via a pin 36b. By driving the lift cylinder 36, the arm 35 can swing up and down. The telescopic arm 35b connected to the base arm 35a can be moved back and forth by driving the cylinder 35d. A frame 35c is fixedly attached to the end of the telescopic arm 35b, and the front end of the frame 35c and the bracket 38a of the fork-shaped attachment 38 are connected to the force. And are connected by pins 37d. At a substantially central portion of the frame 35c, a lever 37 is rotatably attached via a pin 37b. The lever 37 has one end connected to the cylinder 37a and the other end connected to one end of the link 37c via a pin 37e. The other end of the link 37c is connected to the bracket 38b of the attachment 38 by a pin 37f.

According to such a configuration, the arm 35 can be freely moved up and down, the extendable arm 35 b can be extended and contracted, and the attachment 38 can be rotated, so that the height and the maximum Operability in the field is improved. In addition, since it is possible to turn 360 °, it is easy to change the direction of the fork work by the attachment 38. Therefore, the problem in the lift track described in the related art, that is, the problem of changing the direction of the vehicle by several steering operations is solved, and workability is improved.

FIG. 10 is a diagram showing a fifth working machine mounting structure according to the present embodiment. The tip of the drum 27 and the handing frame 40 are connected by pins 40a. The tilt lever 41 a has one end connected to the boom 27 and the other end connected to the cylinder 41. The other end of the tilt lever 41a is connected to one end of a link 4lb, and the other end of the link 41b is connected to a handing frame 40. Since the driving force of the cylinder 41 is applied from the link 41 b via the tilt lever 41 a, the handing frame 40 can be rotated with the pin 40 a as a fulcrum. It has become. The rotating body 42 is connected to the above-mentioned handling arm 40. The pinion (not shown) of the motor 43 fixed to the handling arm 40 is combined with the gear (not shown) provided to the rotating body 42. 2 is rotatable. Brackets 44 and 45 are fixed to the rotating body 42. The bracket 44 attaches one end of the first clamping arm 43 via the pin 44a, and the first clamping arm 43 connects the second clamping arm 46 via the pin 46a. I'm wearing The projection 43a of the first clamping arm 43 is connected to one end of the cylinder 48, and the other end of the cylinder 48 is attached to the bracket 45 by the pin 45a. I'm wearing Further, the first pinching arm 43 is connected to one end of the cylinder 47 with a pin 47a, and the other end of the cylinder 47 is connected to the second pinching arm 46 and the pin 47. Connected by b. A pinching member 43b is provided at the tip of the first pinching arm 43, and a pinching member 46b is attached to the tip of the second pinching arm 46 by a pin 46c. Since it is rotatably attached, it is possible to grip building materials such as support W.

According to this configuration, when the holding work such as the support W is performed at the maximum reach, the swing cylinder 34 is extended, and the third link 33 is pushed forward through the second link 32. Put out. By this extrusion, the first link 25 is also pushed forward, and the boom 27 operates downward, so that the maximum reach can be obtained. In this way, the reach of the working machine 27B is variable, so that the working range is expanded and gripping workability is improved. FIGS. 11A and 11B show the sixth working machine of the present embodiment. FIG. 3 is a mounting structure diagram, in which a rail 50 is fixedly mounted on the upper surface of the upper swing body 1. On the rail 50, pin 52 A movable bracket 51 for mounting the movable boom 15 is provided, and the movable bracket 51 can be moved along the rail 50 by rollers 51 a and 51 a provided on the movable bracket 51. A pair of brackets 1h and 1i are fixed on the upper revolving unit 1, and one end of a lever 53 is attached to the bracket lh with a pin 53a. The other end of lever 53 is connected to one end of link 54 by pin 54a, and the other end of link 54 is attached to movable bracket 51 by pin 54a. I have. The cylinder 55, which connects one end to the lever 53 by the pin 55a, has the other end attached to the bracket 1i by the pin 55b. In this working machine mounting structure, rails 50, moving brackets 51, levers 53, links 54, and cylinders 55 are provided as moving means 56 of the working machine 14. . The moving means 56 may include a rail 50, a moving bracket 51, and a cylinder (not shown) attached to the pins 54b and 53a. .

With such a configuration, the work machine 14 can move along the rail 50. For example, when the work machine 14 is moved to the rear of the upper revolving unit 1, when the cylinder 55 is extended, the lever 53 pivots rearward with the pin 53a as a fulcrum, and the lever 53 Moves from the position of the solid line to the position of the dashed line. In conjunction with the lever 53, the link 54 moves the movable bracket 51 backward, so that the work machine 14 moves to the rear. That is, the work machine 14 can be moved to an appropriate position on the upper-part turning body 1 by the expansion and contraction of the cylinder 55. Therefore, when it is desired to increase the excavating force, the movable bracket 51 is moved to the rear part on the upper revolving unit 1, and when the maximum reach of the work machine 14 is required, the movable bracket 51 is used. Should be moved to the front. As described above, it is easy to change the position of the work machine 14 according to various works, and workability is improved.

FIG. 12A and FIG. 12B are the second working machine mounting structure diagrams of the present embodiment, and a pair of brackets 1 j. 1 k are fixed to the upper rotating body 1. . Bracket 1 j and one end of cylinder 63 with pin 63a, and the other end of cylinder 63 with the base boom 60a of crane 60 with pin 63b lj and one end of the first link 64 with pin 64a, and the other end of the first link 64 and frame 61 with pin 64. The pin 1j is connected to one end of the second link 65 with a pin 65a, and the other end of the second link 65 is connected to the frame 61 with a pin 65c. The bracket lk and one end of the cylinder 66 are connected to each other by a pin 66a, and the other end of the cylinder 66 and the first link 64 are connected to each other by a pin 66b. The first link 64 and the second link 65 are attached in parallel.

The frame 61 has a winch 62 attached thereto and is connected to the base end boom 60a with a pin 61a. The base end boom 60a is connected to one end of the cylinder 60c, and the other end of the cylinder 60c is connected to the telescopic boom 60b. At the end of the telescopic boom 60b, a block 60d is fixedly mounted, and a pulley 67 is provided at the block 60d. The cable 62 a wound from the winch 62 allows the hook 64 to be wound up and down via the pulley 67.

According to this configuration, by extending the cylinder 66, the first link 64 and the second link 65 are moved forward in parallel, so that the cleaning work posture is obtained. Further, by shortening the cylinder 66, the first link 64 and the second link 65 are translated rearward, so that the crane is in the stored posture (running posture). Therefore, the operator can freely change to the desired crane work reach by expanding and contracting the cylinder 66. In addition, as in the above-described embodiment, good transportability and efficient use in a narrow place can be achieved. Parking is possible. Industrial applicability

According to the present invention, since the mounting position of the working machine on the upper revolving unit can be moved back and forth in the vehicle length direction, it is possible to perform various operations such as excavation, crane, handling, and fork with one vehicle. In addition, it is useful as a turning type construction vehicle that provides good workability and transportability.

Claims

The scope of the claims

1. Attach an operator cabin to one side of the upper revolving structure in the vehicle width direction, place a machine cabinet on the opposite side of the operating cabin, and place a machine cabin between the operator cabin and the machine cabin. In a revolving construction vehicle in which a working machine is mounted on a vehicle, a through space (S) is provided between the operator cabin (4) and the machine cabinet (3) above the upper revolving structure (1). And that the working machine (14, 27A) can move the through space (S) from the front end (1L) to the rear end (1M) on the upper rotating body (1). Features a revolving construction vehicle.

2. At the rear end (1M) on the upper revolving structure (1), there are provided counterweights (6a, 6b, 6c) forming cutouts formed in the through space (S), The turning construction vehicle according to claim 1, wherein the notch prevents interference between the work machine (14, 27A) and the counterweight (6a, 6b, 6c).

3. A rail (50) laid on the upper swing body (1) in the through space (S), a moving bracket (51) mounted on the working machine (14), and a moving bracket (51). The revolving construction vehicle according to claim 1 or 2, further comprising a moving means (56) that allows the rack (51) to move along the rail (50).

4. At least a pair of brackets (la; la, le; le) are provided on both sides of the through space (S) in the vehicle width direction on the upper revolving structure (1), and the pair of brackets are provided. The turning construction vehicle according to claim 1 or 2, wherein (la; la, le; le) attaches the work machine (14, 27A).

5. The work machine (27A) includes a swing link mechanism (24), and the swing link mechanism (24) swings and moves the work machine (27A) back and forth in the vehicle length direction, Work machine (27A) 3. The turning type construction vehicle according to claim 1, wherein the vehicle is in a working position or a storage position.

6. A revolving gear (7a) fixed to the lower part of the upper revolving unit (1), and a revolving circuit (7) provided below the upper revolving unit (1) and rotatable with the revolving gear (7a). 7), a lower traveling frame (12) fastened to the lower part of the turning circle (7), and an outer cylinder (8a) installed inside the turning cycle (7). A swivel motor (8) having an inner cylinder (8b), and a swivel motor having a pinion (9a) installed inside the swivel circle (7) and engaged with the swivel gear (7a) (9)

The outer cylinder (8a) and the lower traveling body frame (12), and the inner cylinder (8b) and the upper revolving body (1) are fixed to each other, and the swivel joint (8) is fixed. 3. The swiveling construction vehicle according to claim 1, wherein said swiveling module (9) is disposed below an upper surface of said upper swing body (1).