JPH0868075A - Slewing type constructing vehicle - Google Patents

Abstract

PURPOSE: To improve workability by mounting a through-space section formed of an operator cabin and a machine cab on an upper slewing body while installing a working machine movably from the front end of the through-space section to a rear end. CONSTITUTION: A working machine is set up movably into a through-space section S formed of a machine cab 3, an operator cabin 4 and a tank cabin 5 from a front end 1L on an upper slewing body 1 to a rear end 1M. When heavy excavation must be carried out, a moving bracket 51 is moved to the rear section of the upper slewing body 1, a distance from the center of a drive sprocket to the edge of a bucket 19 is reduced, and the pushing force and excavation force of the bucket 19 are increased. The bracket 51 is shifted to the front section of the upper slewing body 1 and a reach is maximized at the time of deep excavation and ground levelling operation. Various working machines such as a shovel, a crane, a holder, a fork, etc., are replaced as required. Accordingly, excavation force and the reach can be adjusted, various working machines can be used, and visibility can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revolving type construction vehicle, and more particularly to the layout and structure of operator cabins, machine cabs, counterweights, etc. of an upper revolving structure, work equipment mounting structure, and a link mechanism interlocking with the work machine. Regarding

[0002]

2. Description of the Related Art A conventional structure for an upper structure of a swing construction vehicle and a structure for mounting a working machine will be described with reference to FIGS.

First, in the conventional swing construction vehicle shown in FIG. 13, an upper swing body 70 is provided above the lower traveling bodies 71, 71.
An operator cabin 72, a machine cab 73 for mounting an engine 73a and the like, and a counterweight 74 are arranged on the upper swing body 70. Further, brackets 70a, 70a are fixed to the front part of the upper swing body 70, and a boom 75 and a boom cylinder 76 are attached to the brackets 70a, 70a. The tip of the boom 75 is connected to the arm 77, and the boom 75 is connected to the boom cylinder 7
6 allows it to swing up and down. Also, the arm 77
Is connected to a bucket 79, and the arm 77 is vertically swingable by an arm cylinder 78. Furthermore,
The bucket 79 includes a bucket cylinder 80 and a tilt lever 8.
0a and a link 80b are connected, and the bucket 79 is rotatable by expansion and contraction of the bucket cylinder 80. The working machine 81 includes a boom 75, an arm 77,
It comprises a bucket 79 and cylinders 76, 78, 80.

Since the swivel joint 90 and the swing motor 91 are projected above the upper swing body 70, the engine 73a is horizontally placed, and the counterweight 74 is also arranged behind the engine 73a, the work machine is mounted. The position is restricted to the front of the upper swing body 70.

With such a structure, if the working machine 81 is provided in the front part of the upper swing body 70, as shown in FIG. 14, the distance Lf from the center of the starting wheel 71a to the blade edge of the bucket 79 becomes large. And the weight W of the turning construction vehicle,
The pressing force F of the bucket 79 when the distance Lw from the center of the starting wheel 71a to the center of gravity G of the turning construction vehicle is F =
From the relationship of (Lw / Lf) W, when Lf becomes large, the pressing force decreases. Further, when the distance from the center of the idler wheel 71b to the center of gravity G is Li, the excavating force P of the bucket 79 is P
= L · W / {Lf− (Li + Lw)}
Becomes larger, the excavating force P decreases.

The mounting of the swivel joint 90 and the turning motor 91 will be described with reference to the sectional views AA and BB of FIGS. 15 and 16. The outer cylindrical portion 90a of the swivel joint 90 of the cross-sectional view AA is a protruding portion 70b of the upper swing body 70.
The outer cylinder portion 90a is mounted so as to project upward from the upper swing body 70. The inner cylinder portion 90c of the swivel joint 90 is fastened to the frame 93 of the lower traveling body 71 by a bolt 90d. The swirl circle 92 is connected to the protrusion 70b,
The turning gear 92a is held via a ball bearing 92b,
The swivel joint 90 is arranged in the turning circle 92. Because of this, the turning motor 9 described later
The outer cylinder of the swivel joint 90 is rotated together with the upper revolving structure by the driving of No. 1, and the inner cylinder 90c 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. ing.

Next, a sectional view BB will be described. The revolving motor 91 includes a protrusion 70c of the upper revolving structure 70 and a bolt 91b.
The tightening and turning motor 91 is mounted so as to project upward from the upper turning body 70. The turning circle 92 is connected to the projecting portion 70c and holds a turning gear 92a via a ball bearing 92b.
Engages with the pinion 91a of the turning motor 91,
It is fixed to the frame 93 of the lower traveling body 71. Because of this, the swing motor 91 can be driven to swing the upper swing body.

FIG. 17 is a side view of a conventional swing-type construction vehicle. A bracket 70a is fixed to the front part of an upper swing body 70, and a boom 75 and a boom cylinder 76 are attached to the bracket 70a. ing. Further, the swivel joint 90 and the swivel motor 91 described in FIG. 16 are mounted in the swirl circle 92 in the substantially central portion of the upper swivel body 70, and the swivel joint 90, swivel upward from the upper surface of the upper swivel body 70. The motor 91 is protruding. Further, on the upper swing body 70, an engine 73a and a counterweight 74 are mounted behind the swing motor 91. A lower traveling body 71 is provided below the upper revolving body 70, and a frame 93 of the lower traveling body 71 is fixed to a revolving gear 92a as shown in FIG.

A lift equipped with a telescopic working machine
As prior art of trucks, for example, Japanese Patent Publication No. 3-501
There is a Japanese Patent No. 115 publication, and according to this prior art, it is provided with a wheel mounting structure for supporting a lift arm at a rear portion, and an operation / cab in which the structure is mounted on one side of the structure.
The internal combustion engine is arranged in a housing located on the side opposite to the operation / cab and having a space between the operation / cab and the width at least equal to the width of the lift arm.
And, the lift arm is pivotally supported on the structure of the truck so as not to obstruct the view of the operator working in the operation / cab, and partially housed in the gap in the completely lower position. In lift trucks, the internal combustion engine
It is disclosed that the shaft of the internal combustion engine is longitudinally arranged in the housing such that the shaft is parallel to the longitudinal axis of the truck. In short, an operation / driver's cab is provided on the structure for mounting wheels, an internal combustion engine is provided on the opposite side of this operation / driver's cab, and a lift arm is arranged between the operation / driver's cab and the internal combustion engine. .

[0010]

However, as shown in FIG.
As shown in FIG. 17, in the conventional swing-type construction vehicle, a swivel joint 90 and a swing motor 91 are attached in a swing circle 92 in the center of an upper swing body 70. Upper revolving structure 7
It projects from 0 upward. Further, an engine 73a is horizontally placed at the rear of the upper swing body 70. Further, a counterweight 74 that is integrally formed is installed at the rear of the engine 73a. Due to such a configuration, the bracket 70a for mounting the boom 75, which is the base end of the working machine 81, is constrained to be installed at the front part of the upper swing body 70.

For this reason, the pressing force F of the bucket 79 described with reference to FIG. 14 becomes smaller as Lf becomes larger from the relationship of F = (Lw / Lf) W, and the bucket 79 becomes smaller.
The excavating force P of P is Li = W / {Lf- (Li + L
w)}, there is a problem that the excavation force P decreases as Lf increases. In order to increase the pressing force and excavating force of the bucket 79, a short arm is used as the starting wheel 7.
Although measures such as reducing the distance Lf from the center of 1a to the blade edge of the bucket 79 are taken, even if the pressing force and excavating force of the bucket 79 are increased, the reach of the entire working machine is shortened, and therefore the depth of the vertical hole is increased. There was a contradictory problem that it was not possible to dig.

A boom 75 which is the base end of the working machine 81
Is installed in the front part of the upper swing body 70, the operator has a problem that the right side view of the operator cabin is blocked by the working machine 81 and deteriorates.

The above-mentioned prior art, Japanese Patent Publication No. 3-5011
In JP-A-15, a fork-shaped tool is extendable back and forth by a lift arm, but it is operated upward from the ground, and there is a problem that it is not suitable for excavating the ground. Further, since it is a wheeled truck, when it is desired to change the direction of the lift arm to perform the work, the steering of the truck is turned many times to operate, and there is a problem that maneuverability is poor.

The present invention has been made in view of the above problems, and a through space formed by an operator cabin and a machine cab is provided, and a working machine suitable for various works of a swing-type construction vehicle is mounted. It is an object of the present invention to provide a revolving type construction vehicle in which the vehicle can be moved to an appropriate position on the upper revolving structure and various work machines can be mounted on one vehicle.

[0015]

In order to achieve the above-mentioned object, a turning construction vehicle according to the present invention has an operator cabin attached to one side portion of an upper turning body in the vehicle length direction, and the operator cabin of the operator cabin is In a revolving construction vehicle in which a machine cab is arranged on the opposite side and a working machine is attached between the operator cabin and the machine cab, a through space formed by the operator cabin and the machine cab is provided in the upper revolving structure. In addition to being provided in the upper upper portion, the working machine is configured to be movable from the front end portion to the rear end portion on the upper swing body.

In the above structure, the working machine is attached to the moving bracket, and the working machine is provided with a link mechanism that can move along a rail installed on the upper swing body.

Further, in the above structure, a bracket for attaching the working machine to the front portion, the central portion or the rear portion on the upper swing body is provided.

Further, in the above construction, the swing link mechanism is interlocked with the working machine in order to bring the working machine into the working posture or the storage posture.

Further, in the above structure, the swivel circle of the upper swivel body and the lower traveling body frame in the swiveling circle are arranged, and the outer cylinder of the swivel joint is attached to the lower traveling body frame. The inner cylinder of the swivel joint is attached to the upper swing body, the swing motor is attached to the lower traveling body frame, and the pinion of the swing motor meshes with the swing gear that connects the upper swing body. The swing motor is mounted below the upper surface of the upper swing body.

[0020]

According to the above construction, since the working machine is provided with means for moving it freely on the upper revolving superstructure, the working machine is placed on the upper revolving superstructure when performing heavy excavation according to various works. By moving to the rear part, the distance Lf from the center of the starting wheel to the blade edge of the bucket is reduced to reduce the bucket pressing force F and the excavating force P.
Can be increased. Further, when the maximum reach of the working machine is required in the deep digging work of the vertical hole or the ground leveling work, the working machine can be moved to the front part on the upper swing body to perform the work. Moreover, since the present invention is a turning construction vehicle, 36
Since 0 ° turning drive and movement of the working machine are possible, various workability is improved.

Further, since the swing link mechanism is interlocked with the working machine, the working machine is stored in a retracted position, and the working machine is stored lower than the operator cabin even when the height of the working machine is restricted, so that the working machine is not disassembled. It becomes possible to transport, and by storing the work machine after the shovel work is completed, it becomes possible to efficiently park the car in the building or in a narrow place.

Further, since the fork-shaped attachment can be rotated to improve the workability at a high place or a place where the maximum reach is required, since the fork-shaped construction vehicle can be used to rotate 360 °, the fork-shaped attachment can be rotated. It is easy to change the direction of fork work by the attachment, and workability is improved.

Further, since the swinging link mechanism is interlocked with the handling arm, the work range of the work for gripping the building material such as the support work by the maximum reach during the handling work is expanded, and the gripping workability is improved.

Further, since a working machine including a boom, an arm and a bucket is mounted on the moving bracket and can be moved along a rail installed on the upper swing body, the working machine is arranged at an appropriate position on the upper swing body. Doing so will improve the workability of various shovels. Further, by moving the working machine to the rear part on the upper swing body, the operator has a good right-side visibility of the operator cabin.

Further, according to the structure of the present invention, the crane is mounted on the swing type construction vehicle, and the first link and the second link are interlocked by the extension and contraction of the cylinder of the crane. 1 can be moved in parallel and stored, which improves transportability, and by storing the crane after completion of crane work, it is possible to efficiently park in the building or in a narrow place. . Further, by placing the crane in the retracted posture, workability in low places is improved.

Further, according to the above construction, since the working machine can be arbitrarily moved from the front end portion to the rear end portion on the upper swing body, the excavator work, the crane work, the handling work, and the fork work can be carried out by one vehicle body. It becomes possible by preparing various working machines in advance, and the working efficiency is improved, and since it is not necessary to manufacture a vehicle body adapted to various working machines, the manufacturing cost can be reduced.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of a turning construction vehicle according to the present invention will be described below with reference to the drawings. It should be noted that FIG.
Throughout the drawings, parts common to those in FIG.

FIG. 1 is a perspective view of a swing-type construction vehicle of the present invention, in which a lower traveling body 2 is provided below an upper revolving body 1 and can be freely driven by a traveling motor (not shown). An operator cabin 4 is mounted on one side portion A of the upper swing body 1, and a machine cab 3 is arranged on the opposite side of the operator cabin 4 and the machine cab 3
The engine 3a and the hydraulic equipment 3b are installed inside,
Behind this machine cab 3 is a right side counterweight 6
c is attached. Further, behind the operator cabin 4, there is a tank cab 5 for mounting a fuel tank and a hydraulic oil tank, and behind the tank cab 5 is mounted a left side counterweight 6c.
c and 6c are of a split type. Thus, the through space (S) formed by the machine cab 3 side, the operator cabin 4 and the tank cab 5 side is provided. A working machine to be described later can be moved from the front end portion 1L on the upper revolving structure 1 to the rear end portion 1M in the through space (S).

FIG. 2 relates to the counterweights 6a, 6b, 6c of the swing type construction vehicle of the present invention, all of which are through spaces (S) between the machine cab 3 side, the operator cabin 4 and the tank cab 5 side. ), The counterweight is also cut. In this way, when the working machine is mounted in the through space (S), the counterweight 6
It does not interfere with a, 6b and 6c.

FIG. 3 is a plan view of a revolving type construction vehicle according to one embodiment of the present invention. The engine 3a is provided on one side of the upper revolving structure 1.
Is installed vertically. Brackets 1a and 1a are provided at the front of the upper swing body 1 and brackets 1b and 1a are provided at the rear thereof.
b is fixed. Further, a through space (S) formed by both brackets 1a and 1a and 1b and 1b is provided, and the counterweights 6c and 6c are of a split type according to the through space (S). . Since this is done, the working machine can be mounted at an appropriate position. Reference numeral 2 is a lower traveling body.

Further, a swivel circle 7 is provided in the upper swivel body 1, and a swivel joint 8 and a swivel motor 9 are mounted in the swivel circle 7. See section C for details
-C and cross section DD will be described with reference to FIG.

The section CC of FIG. 4 will be described. The swivel joint 8 is fastened by a protruding portion 8c of an outer tubular portion 8a, a frame 12 of the lower traveling body 2 and a bolt 11. The inner cylinder portion 8b of the swivel joint 8 is fixed to the protrusion 1c of the upper swing body 1 and the bolt 1 via the fixing plate 10.
It is fastened by 0a and 10b. The swivel circle 7 is connected to the frame 12 of the undercarriage 2 and holds the swivel gear 7a via a ball bearing 7b. The swivel joint 8 is arranged in the swivel circle 7 and has an outer cylinder. Since the portion 8a is mounted so as to project toward the frame 12 side of the lower traveling body 2, it is designed so as not to project from the upper surface of the upper revolving structure 1. Because of this, the swivel joint 8 is driven by the drive of the turning motor 9 described later.
The inner cylinder 8b rotates with the upper revolving structure 1, and the outer cylinder 8a is fixed to the frame 12 of the lower traveling structure 2, so that hydraulic oil from a pump (not shown) can be supplied to a traveling motor (not shown) of the lower traveling structure 2. Has become.

Next, the cross section DD of FIG. 4 will be described. The turning motor 9 is fastened to the projecting portion 12a of the frame 12 of the lower traveling body 2 and the bolt 9b. The turning circle 7 is connected to the frame 12 of the lower traveling body 2 and holds the turning gear 7a via a ball bearing 7b.
The swing gear 7 a meshes with the pinion 9 a of the swing motor 9 and is fixed to the upper swing body 1. Because of this, the swing motor 9 can be driven to swing the upper swing body 1.

FIG. 5 is a side view of a swing type construction vehicle showing an embodiment of the present invention. A bracket 1a is fixed to the front part of the upper swing body 1, and the boom 15 and the boom are mounted on the bracket 1a. The cylinder 16 is attached. A bracket 1b is also fixed to the rear part of the upper swing body 1, and the boom 15 and the boom cylinder 16 can be attached to the bracket 1b. The two brackets 1a and 1b have been described, but two or more brackets 1a and 1b are provided at appropriate positions on the upper revolving structure 1 and the upper revolving structure 1 shown in FIG.
The boom 15 and the boom cylinder 16 may be attached to any position in the range from the upper front end 1L to the rear end 1M. Further, the swivel joint 8 and the swivel motor 9 described in FIG. 4 are mounted in the swivel circle 7 in the substantially central portion of the upper swivel body 1, and the swivel joint 8 is moved downward from the frame 12 of the lower swivel body 2. The turning motor 9 is mounted so as to project. Further, an engine 3a is vertically installed on the upper revolving structure 1, and a counterweight 6c is mounted behind it. Therefore, when the maximum reach of the working machine is required in the deep digging work of the vertical hole according to various works of the swing construction vehicle, the mounting positions of the boom 15 and the boom cylinder 16 are set to the front part of the upper swing body. Work with the bracket 1a. When excavating hard ground, the boom 15 and the boom cylinder 16 are attached to the rear bracket 1b of the upper revolving structure. The mounting positions of the boom 15 and the boom cylinder 16 can be moved by various works. The reason for this will be described in detail with reference to FIG.

FIG. 6 is a turning type construction vehicle showing one embodiment of the present invention. The parts described with reference to FIGS. 1 to 5 are the same in this embodiment, and the description thereof is omitted here. First, as described with reference to FIG. 5, the front bracket 1a and the rear bracket 1b are fixed on the upper swing body 1, and the boom 1 is attached to the rear bracket 1b as shown in the figure.
5, the boom cylinder 16 is installed, this boom 1
5 is swingable up and down by driving the boom cylinder 16. The tip of the boom 15 and the arm 17 are connected to each other, and the arm 17 is vertically swingable by driving an arm cylinder 18. In addition, the tip of the arm 17 and the bucket 19 are connected to each other, and the tilt lever 2
One end of 0a is connected to the arm 17 and the other end is connected to the bucket cylinder 20. Further, the tilt lever 20a and one end of the link 20b are connected to each other,
The other end of b is connected to the bucket 19. In this way, due to the expansion and contraction of the bucket cylinder 20, the driving force is applied to the bucket via the link 20b, and the bucket can be rotated. The work machine 14 includes a boom 15, an arm 17, a bucket 19, and cylinders 16, 18, 20.

Next, the relationship between the mounting position of the working machine 14 including the boom, the arm and the bucket and the bucket pressing force and the excavating force will be described. The weight W of the turning construction vehicle described in FIG. 14, the distance Lw from the center of the starting wheel 71a to the center of gravity G of the turning construction vehicle, and the pressing force F of the bucket 79.
Becomes smaller as Lf becomes larger from the relationship of F = (Lw / Lf) W, and the excavating force P of the bucket 19 when the distance from the center of the idler wheel 2b to the center of gravity G is Li.
Indicates that the excavating force P decreases when Lf increases from the relationship of P = Li · W / {Lf- (Li + Lw)}, and therefore the work implement 14 is moved to the rear part on the upper swing body 1 as shown in FIG. Therefore, when the mounting position of the boom 15 and the boom cylinder 16 is set to the rear bracket 1b of the upper swing body 1, the distance Lf1 from the center of the starting wheel 2a to the blade edge of the bucket 19 is the same as that of the conventional one shown in FIG. Is significantly shorter than Lf of the turning type construction vehicle, and the pressing force F and the excavating force P of the bucket 19 are increased. Because it is like this, the soil quality,
It is possible to perform work by changing the mounting position of the work machine according to the work form.

The mounting relationship of the working machine and the link mechanism of the working machine of the present invention will be described in detail with reference to FIGS. 7 to 12. still,
Descriptions of components that are the same as those in FIGS.

The mounting relationship between the first working machine of the present invention and the link mechanism of the working machine will be described with reference to FIG. Brackets 1c and 1d are fixed to a substantially central portion of the upper swing body 1. Attach the boom 15 to the bracket 15 with the pin 15
The boom cylinder 16 is connected with the pin 16a.
Are connected with. The base end boom 21a of the crane 21 is connected to the bracket 1d by a pin 21b, and one end of the lift cylinder 22 is connected by a pin 22a. The other end of the lift cylinder 22 is attached to the base boom 21a. The base boom 21a and the telescopic boom 21c are connected by a cylinder 21d. A hook 21e is attached to the tip of the telescopic boom 21c, and a cable is wound by a winch (not shown) to vertically move the hook 21e. Also, this boom 15 and crane 21
The base boom 21a is mounted between the operator cabin 4 and the tank cab 5 provided on the upper swing body 1 and the machine cab 3 on the opposite side.

According to the above configuration, the boom 1
5, arm 17, bucket 19, each cylinder 16, 1
Since the excavators are provided with brackets 1c and 1d at approximately the center of the upper revolving structure 1 so that both the excavating work by the bucket 19 and the hanging work by the crane 21 can be performed by the working machine composed of 8 and 20, and the crane 21. Crane work is possible while securing work. The positions of the brackets 1c and 1d are determined depending on whether the excavator work or the crane work is emphasized. In this embodiment, the brackets 1c and 1d are installed substantially at the center of the upper swing body 1. Bracket 1 when you want to increase
It suffices to install c at the rear of the upper swing body 1. Further, when performing deep digging work during the excavator work, the bracket 1c may be installed in the front part of the upper swing body 1. Further, the brackets 1c and 1d may be integrated type, but when it is desired to use a separate type to increase the maximum reach of the crane 21, the bracket 1c
d may be installed in the rear part of the upper swing body 1.

The mounting relationship between the second working machine of the present invention and the link mechanism of the working machine will be described with reference to FIG. A bracket 1e is 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 boom 27 with the tip of the first link.
Are connected by a pin 25b. One end of the boom 27 and the boom cylinder 26 are connected by a pin 26a, and the other end of the boom cylinder 26 is connected to the first link 25 by a pin 26b.
It is connected with. The boom 27 can be vertically swung by the expansion and contraction of the boom cylinder 26. This boom 2
7 is connected to the arm 28 and the arm 2
8 is swingable up and down by driving an arm cylinder 29. Further, the tip of the arm 28 and the bucket 3
The tilt lever 31a has one end connected to the arm 28 and the other end connected to the bucket cylinder 31. Furthermore, the tilt lever 31a and the link 31b
, And the other end of the link 31b is connected to the bucket 30. In this way, due to the expansion and contraction of the bucket cylinder 31, a driving force is applied to the bucket 30 via the link 31b, and the bucket 30 is rotatable.

One end of the second link 32 is connected to the bracket 1e by a pin 32a, and the other end of the second link 32 is a third link.
One end of the link 33, one end of the swing cylinder 34, and the pin 32
They are connected by b. Further, 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 swing cylinder 34 is fixed to the upper swing body 1 by the bracket 1
It is connected to f by a pin 34a.

According to the above configuration, the boom 2
When performing excavator work (deep digging, digging, etc.) with the maximum reach of the working machine including the 7, arm 28, and bucket 30, the second link 32 is extended by extending the swing cylinder 34.
When the third link 33 is pushed forward through the first link 25, the first link 25 is also pushed forward, so that the boom 27 operates downward to obtain the maximum reach. Since it is possible to change the working machine reach in this way, the working range is expanded and the workability is improved. Further, after the work is completed, when the second link 32 is pulled backward by shortening the swing cylinder 34, the first link 25 is also pulled backward via the third link 33, so that the boom 27, the arm 28, and the bucket 30 are also pulled. Can be moved backwards and stored. Since the working machine can be stored in this way, it can be transported without disassembling by storing the working machine at a height lower than that of the operator cabin 4 even with respect to the height limit during transportation, and after the shovel work, the working machine can be transported. It becomes possible to efficiently park in the building T or in a narrow place by storing the.

The third working machine of the present invention and the mounting relationship of the link mechanism of the working machine will be described with reference to FIG. A bracket 1g is fixed to the rear portion of the upper swing body 1.
The base end arm 35a of the arm 35 is connected to the bracket 1g by a pin 35c, and one end of the lift cylinder 36 is connected by a pin 36a. This lift cylinder 3
The other end of 6 is attached to the base arm 35a. By driving the lift cylinder 36, the arm 35 can swing up and down. In addition, the base arm 35 of the arm 35
The a and the telescopic arm 35b are connected by a cylinder 35d, and the telescopic arm 35b is driven by driving the cylinder 35d.
Can be pushed forward and retracted backwards. A frame 35c is integrally fixed to the tip of the telescopic arm 35b, and the tip of the frame 35c and the bracket 38a of the fork-shaped attachment 38 are connected by a pin 37d. A lever 37 is rotatably connected to a substantially central portion of the frame 35c by a pin 37b. One end of the lever 37 is connected to the cylinder 37a, and the other end of the lever 37 is connected to one end of a link 37c and a pin 37e. Are connected by. The other end of the link 37c is connected to the bracket 38b of the fork-shaped attachment 38 by a pin 37f.

According to the above structure, the arm 35 can be vertically swung with respect to the upper revolving structure 1 of the revolving construction vehicle, the telescopic arm 35b of the arm 35 can be telescopically moved, and the cylinder 37a can be moved. Since the fork-shaped attachment 38 can be rotated by the link 37c via the lever 37 by the driving force, the workability is improved at a high place or a place where the maximum reach is required. Since it can be turned, it is easy to change the direction of the fork work by the fork-shaped attachment 38, and the steering of the vehicle can be changed like the lift truck disclosed in Japanese Patent Publication No. 3-501115 of the prior art. Workability is improved because there is no need to steer to change the direction of the vehicle. The above structure is also the same as the structure described with reference to FIGS. 1 to 4, and a description thereof will be omitted here.

The mounting relationship of the fourth working machine of the present invention and the link mechanism of the working machine will be described with reference to FIG.
It should be noted that the description of the parts which are the same as those in FIG. Boom 27 tip and handling frame 4
0 is connected by a pin 40a, one end of the tilt lever 41a is connected to the boom 27, and the other end is connected to the cylinder 41. The tilt lever 41a is connected to one end of the link 41b, and the other end of the link 41b is connected to the handling frame 40. Since the driving force of the cylinder 41 is applied from the link 41b via the tilt lever 41a, the handling frame 40 is rotatable about the pin 40a as a fulcrum.

The handling arm 40 has a rotating body 4
The motor 43 fixed to the handling arm 40 and the gear (not shown) provided on the rotating body 42 are connected to each other.
Of the pinion is engaged, and the rotating body 42 can be rotated by driving the motor 43. This rotating body 42
Brackets 44 and 45 are fixedly attached to each other. One end of the first holding arm 43 and the bracket 44 are connected by a pin 44a, and the first holding arm 43 and the second holding arm 46 are connected by a pin 46a. There is. The protruding portion 43 a of the first sandwiching arm 43 is connected to the cylinder 48, and the cylinder 48
The other end of is connected to the bracket 45 by a pin 45a.
The first pinching arm 43, one end of the cylinder 47, and the pin 4
The second end of the cylinder 47 is connected to the second holding arm 46 by a pin 47b. A holding member 43b is provided at the tip of the first holding arm 43, and a holding member 46b is rotatably attached to the end of the second holding arm 46 by a pin 46c. It is possible to grip building materials.

According to the above-described structure, the swinging cylinder 34 is extended to perform the third link via the second link 32 when gripping a building material such as supporting work by maximum reach during handling work. When pushing 33 forward, the first link 25 is also pushed forward.
Can work downwards for maximum reach. Since the reach of the working machine can be changed in this way, the working range is expanded and the gripping workability is improved.

The fifth working machine of the present invention and the mounting relationship of the link mechanism of the working machine will be described with reference to FIG.
It should be noted that the description of the same parts as those in FIG. As shown in the Z view, the rail 50 is fixed to the upper surface of the upper swing body 1, and the boom 1 is mounted on the rail 50.
It is movable by rollers 51a, 51a provided on a moving bracket 51 which is connected by 5 and a pin 52. Work machine 14
The moving means 56 comprises a rail 50, a moving bracket 51, a lever 53, a link 54, and a cylinder 55.
Brackets 1h and 1i are fixed on the upper swing body 1. One end of the lever 53 is attached to the pin 53 on the bracket 1h.
The lever 53 is connected to one end of the link 54, and the other end of the link 54 is connected to the moving bracket 51. Further, the lever 53 is connected to one end of the cylinder 55, and is connected to the other end bracket 1i of the cylinder 55.

According to the above configuration, the boom 1
5, arm 17, bucket 19, each cylinder 16, 1
The working machine 14 composed of 8 and 20 is mounted on the moving bracket 51, and the roller 51a of the moving bracket 51 can move along the rail 50 installed on the upper swing body 1. When the cylinder 55 is extended when moving to the rear part of the upper swing body 1, the lever 53 pivots rearward about the pin 53a as a fulcrum to move from the position indicated by the solid line to the position indicated by the one-dot chain line. A link 54 interlocks with the lever 53 to move the moving bracket 51 rearward. By expanding and contracting the cylinder 55, the cylinder 55 can be moved to an appropriate position on the upper swing body 1. Because of this, when it is desired to increase the excavation force during the excavator work, the moving bracket 51 may be moved to the rear portion on the upper swing body 1. Further, when performing the deep digging work or the ground leveling work that requires the maximum reach of the work machine in the shovel work, the moving bracket 51 may be moved to the front part on the upper swing body 1.
According to the present embodiment, it is possible to change the position of the working machine according to various kinds of work and perform the work, thus improving workability.

The sixth working machine of the present invention and the mounting relationship of the link mechanism of the working machine will be described with reference to FIG.
It should be noted that the same parts as those in FIGS. 1 to 5 are designated by the same reference numerals and the description thereof will be omitted. Brackets 1j, 1 on the upper swing body 1
k is fixed. This bracket 1j and cylinder 63
One end of the cylinder 6 is connected by a pin 63a and the cylinder 6
The other end of 3 is the base boom 60 a of the crane 60 and the pin 63.
They are connected by b. Also, this bracket 1j and the first
The one end of the link 64 is connected by the pin 64a, and the first
The other end of the link 64 is connected to the frame 61 by a pin 64b. Further, this bracket 1j and the second link 65
One end of the second link 65 is connected with a pin 65a.
The other end of is connected to the frame 61 by a pin 65b.
The bracket 1k has a pin 66 at one end of a cylinder 66.
The cylinder 66 is connected to the first link 64 at the other end by a pin 66b. The first link 64 and the second link 65 are attached in parallel.

A winch 62 is attached to the frame 61. The frame 61 is connected to the base boom 60a by a pin 61a. The base boom 60a of the crane 60 is connected to one end of the cylinder 60c, and the other end of the cylinder 60c is connected to the telescopic boom 60b. A block 60d is fixed to the end of the telescopic boom 60b, a pulley 61 is provided on the block 60d, and a cable 6 wound from the winch 62 is provided.
At 3, the hook 64 can be wound up and down via the pulley 61.

According to the above structure, the cylinder 6
The extension of 6 allows the first link 64 and the second link 65 to move parallel in the forward direction, whereby the working posture of the crane can be obtained. Further, by shortening the cylinder 66, the first link 64 and the second link 65 are moved in parallel rearward so that the crane can be brought into the retracted posture (running posture). Also in this embodiment, since the through space (S) formed by the operator cabin 4 and the machine cab 3 described in FIGS. 1 and 3 is provided, the crane 60 moves from the working posture to the storage posture (running posture). It is free to operate. Thus, in the working posture of the crane, the operator can freely change the reach of the crane by expanding and contracting the cylinder 66.
Even with respect to the height limit during transportation, it is possible to transport without disassembling by setting the crane 60 lower than the operator cabin 4 in the retracted posture, and by storing the crane after the completion of crane work, It is possible to park efficiently in a narrow space. The crane 60, the cylinders 63, 66, the first link 64,
Except for the second link 65 and the brackets 1j and 1k, the structure is the same as that described with reference to FIGS.

As described in detail above, the present invention relates to a machine cab on the upper revolving structure of a revolving construction vehicle, a change in the arrangement and shape of the counterweight, and a swivel joint mounted so as to project on the upper revolving structure. It is possible to change the mounting position of the swing motor and move and change the mounting bracket position of the working machine so that the mounting position of the working machine moves to an appropriate position on the upper swing body. This is a turning construction vehicle to which an oscillating link mechanism is added.

[0054]

As described above, according to the swing type construction vehicle of the present invention, the working machine is provided with the means capable of moving the working machine to an appropriate position on the upper swing body. For example, when performing heavy excavation, the work implement is moved to the rear of the upper swing body to reduce the distance Lf from the center of the starting wheel to the blade edge of the bucket to reduce the bucket pressing force F and the excavating force P.
It is possible to increase the work area and move the work equipment to the front part on the upper revolving structure when the maximum reach of the work equipment is required for deep digging work of vertical holes and leveling work. Therefore, the workability of various shovels is improved.

Further, according to the structure of the present invention, since the swing link mechanism is interlocked with the working machine, the working machine is set in the retracted posture and the working machine is lower than the operator cabin with respect to the height limitation during transportation. By storing it, it becomes possible to transport it without disassembling it, and by storing the work machine after the shovel work is completed, it becomes possible to efficiently park in the building or in a narrow place.

Further, according to the configuration of the present invention, the fork-shaped attachment can be rotated to improve the workability at a high place or a place where the maximum reach is required, and a 360 ° turning can be performed by using the turning type construction vehicle. Because it is possible
It is easy to change the direction of the fork work using the fork-shaped attachment, and the workability is improved.

Further, according to the structure of the present invention, since the swinging link mechanism is interlocked with the handling arm, the working range of the holding work of the building material such as the supporting work by the maximum reach at the time of the handling work is expanded and grasped. Workability is improved.

Further, according to the structure of the present invention, since the working machine including the boom, the arm and the bucket is mounted on the movable bracket and can be moved along the rail installed on the upper swing body, the working machine is swung upward. Various excavator workability is improved by arranging it at an appropriate position on the body. Further, by moving the working machine to the rear part on the upper swing body, the operator improves the right side visibility of the operator cabin, and the work becomes easier.

Further, according to the structure of the present invention, the crane is mounted on the swing type construction vehicle, and the first link and the second link are interlocked by the extension and contraction of the cylinder of the crane. 1 can be moved in parallel and stored, which improves transportability, and by storing the crane after completion of crane work, it is possible to efficiently park in the building or in a narrow place. .

Further, according to the above construction, since the working machine can be moved to an appropriate position on the upper swing body, the shovel work, the crane work, the handling work, and the fork work can be carried out by various working machines with one vehicle body. It is possible to improve the work efficiency by preparing, and it is possible to reduce the manufacturing cost because it is not necessary to manufacture a vehicle body adapted to various working machines.

[Brief description of drawings]

FIG. 1 is a perspective view of a turning construction vehicle of the present invention.

FIG. 2 is an explanatory view of the counterweight of the turning type construction vehicle of the present invention.

FIG. 3 is an explanatory diagram of an upper swing body of the swing-type construction vehicle of the present invention.

FIG. 4 is an explanatory view of a swivel joint and a turning motor mounted state of the turning type construction vehicle of the present invention.

FIG. 5 is a side view of the turning type construction vehicle of the present invention.

FIG. 6 is an explanatory diagram when the working machine mounting position of the present invention is moved to the rear part.

FIG. 7 is an explanatory view of a state where the working machine and the crane are mounted on the swing-type construction vehicle of the present invention.

FIG. 8 is an explanatory diagram when the working machine of the swing-type construction vehicle of the present invention and the swing link mechanism are interlocked.

FIG. 9 is an explanatory view of a fork-shaped attachment mounted state on the swing-type construction vehicle of the present invention.

FIG. 10 is an explanatory view showing a state where a handling arm is mounted on the turning type construction vehicle of the present invention.

FIG. 11 is an operation explanatory diagram when the working machine of the present invention is mounted on the movable bracket.

FIG. 12 is an explanatory view of the working posture and storage posture of the crane of the swing-type construction vehicle of the present invention.

FIG. 13 is a perspective view of a conventional turning type construction vehicle.

FIG. 14 is a diagram for explaining a problem when the conventional work implement mounting position is at the front of the upper swing body.

FIG. 15 is an explanatory diagram of an upper swing body of a conventional swing-type construction vehicle.

FIG. 16 is an explanatory view of a conventional swivel construction vehicle in which a swivel joint and a swing motor are mounted.

FIG. 17 is a side view of a conventional turning construction vehicle.

[Explanation of symbols]

1 ... Upper swing body, 2 ... Lower traveling body, 3 ... Machine cab,
3a ... Engine, 4 ... Operator cabin, 5 ... Tank cab, 6a, 6b, 6c ... Counterweight, 7 ... Swivel circle, 8 ... Swivel joint, 9 ... Swivel motor, 1a, 1b ... Bracket, 15, 27 ... Boom, 1
7, 28 ... Arms, 19, 30 ... Buckets, 21, 60
... Crane, 24 ... Swing link, 38 ... Fork attachment, 40 ... Handling arm, 51 ... Moving bracket, 56 ... Moving link mechanism, 64 ... First link,
65 ... Second link.

Claims (5)

[Claims] 1. An operator cabin is attached to one side in the vehicle length direction of an upper swing body, a machine cab is arranged on the opposite side of the operator cabin, and a working machine is provided between the operator cabin and the machine cab. In the attached swing-type construction vehicle, a through space formed by the operator cabin and the machine cab is provided in an upper portion on the upper swing body, and the working machine is rearward from a front end portion on the upper swing body. A turning construction vehicle characterized by being movable to the end. 2. The work machine is attached to a moving bracket,
The swing-type construction vehicle according to claim 1, further comprising a link mechanism that enables the work machine to move along a rail installed on an upper swing body. 3. The working machine is a front part on the upper swing body,
The turning construction vehicle according to claim 1, further comprising a bracket attached to a central portion or a rear portion. 4. The swing-type construction vehicle according to claim 1, wherein a swing link mechanism is interlocked with the working machine to bring the working machine into a working posture or a storage posture. 5. A revolving circle of the upper revolving superstructure and a lower traveling body frame in the revolving circle are arranged, and an outer cylinder of a swivel joint is attached to the lower traveling body frame. The cylinder is attached to the upper revolving structure, and the revolving motor is attached to the lower traveling body frame, and the pinion of the revolving motor is engaged with the revolving gear that is connected to the upper revolving structure. The swing-type construction vehicle according to claim 1, wherein the swing-type construction vehicle is mounted below an upper surface of the upper swing body.