JP2002089057A - Cutting work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting work vehicle capable of cutting a long and thick steel member, reducing initial cost and running cost, and being used even in a narrow work site. SOLUTION: A lower part running body 21 is provided, and an upper part turning body 22 turning around a vertical shaft core is provided on the lower part running body 21. A cutting device 3 provided with an upper part cutting blade 34a opening and closing vertically and a fixed lower part cutting blade 32a is attached to the lower part running body 21 of a work vehicle 2 in which a work arm 24 provided with a work device at its tip and capable of bending freely is supported so as to rise up and fall down freely by the upper part turning body 22. Consequently, stability of the work vehicle 1 does not produce a problem, and the large-scale cutting device 3 having large capacity can be mounted on the small work vehicle 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting work vehicle for cutting a long, large, large steel material such as a steel frame produced by dismantling a structure such as a plant. It belongs to the technical field of a cutting work vehicle which is mounted on a work vehicle and can cut a large steel material while moving even in a narrow work site.

[0002]

2. Description of the Related Art As is well known, a long and large large steel material such as a steel frame generated by dismantling a plant or the like is recycled after being cut into a predetermined length by a cutting device of a cutting work vehicle. Such a cutting device generally includes a lower traveling body, an upper revolving body that is pivoted about a vertical axis on the lower traveling body, and a work arm that can be bent by the upper revolving body. It is attached to the tip of the working arm of a hydraulic excavator body, which is a work vehicle body freely supported. The cutting device has a turning mechanism, and an openable and closable cutting blade for cutting the steel material on the side opposite to the working arm of the turning mechanism. Some cutting devices do not include a turning mechanism.

[0003]

When cutting a long and thick large steel material such as a steel frame, a large and heavy cutting device needs to be attached to the tip of the working arm. Due to the stability of the hydraulic excavator, it is necessary to employ a large excavator body. Therefore, not only is it uneconomical with respect to initial costs and running costs, but also there is a problem to be solved that cutting of large steel materials in a narrow work site is difficult, and it can only be put into a relatively wide work site. .

Accordingly, an object of the present invention is to cut a long and large large steel material such as a steel frame caused by dismantling of a structure, to reduce initial costs and running costs, and to cut even a narrow work site. An object of the present invention is to provide a cutting work vehicle that can be inserted.

[0005]

Means for Solving the Problems The present invention has been made to solve the above-mentioned problems, and the means adopted by the cutting work vehicle according to claim 1 of the present invention comprises a lower traveling body, An upper revolving body that is pivoted about a vertical axis is provided on the lower traveling body, and the upper revolving body supports a bendable work arm having a working device mounted at the tip so as to be able to move up and down. In the work vehicle, a cutting device having an upper jaw and a lower jaw that relatively opens and closes in a vertical direction is mounted on the lower traveling body.

According to the cutting work vehicle of the first aspect, a cutting device having an upper jaw body and a lower jaw body which are relatively opened and closed in a vertical direction is mounted on a lower traveling body of the work vehicle. Thus, even if the cutting device is mounted, the stability of the vehicle is not impaired, so that a large and heavy cutting device can be mounted on a work vehicle smaller than before.
As a result, the position of the center of gravity is lowered, and the stability of the vehicle is increased, so that a long and large large steel material can be cut in a stable state by the cutting device, the initial cost and running cost are reduced, and the work site is narrow. An excellent effect of being able to be introduced into the system.

According to a second aspect of the present invention, in the cutting work vehicle according to the first aspect, a cutting blade is attached to each of the upper jaw and the lower jaw opposed to each other. The upper jaw opens and closes vertically with respect to the lower jaw.

According to the cutting work vehicle of the second aspect, a cutting blade is attached to each of the upper jaw and the lower jaw opposed to each other, and the upper jaw is vertically moved with respect to the lower jaw. Since it is a configuration that opens and closes, it is possible to support the steel material with the cutting blade of the lower jaw body and cut the steel material supported by the cutting blade of the lower jaw body with the cutting blade of the lower jaw body and the cutting blade of the upper jaw body. it can.

According to a third aspect of the present invention, there is provided a cutting work vehicle according to any one of the first to second aspects, wherein the cutting device includes the lower traveling body. Characterized by being supported rotatably in the up-down direction with respect to.

According to the cutting work vehicle according to the third aspect, the cutting device is supported rotatably in the vertical direction with respect to the lower traveling body, and deposits the lower jaw on the ground. Since the steel material can be cut in a more stable state, safety at the time of the cutting operation is improved.

According to a fourth aspect of the present invention, there is provided a cutting work vehicle according to any one of the first, second, and third aspects, wherein the working device includes at least a cutting device. It is an openable and closable cutting and holding device having a blade and a holding portion.

According to the cutting work vehicle of the fourth aspect, since the working device mounted on the tip of the working arm is a freely openable and closable cutting / holding device having at least a cutting blade and a holding portion, for example, When moving at the work site, remove the cutting device that has been
While holding by a gripping device and loading it on a trailer, etc., and moving a large steel material to be cut to the position of the cutting device,
It can tear off steel materials and the like that have been bitten by the cutting device, sort out various scattered waste materials generated when dismantling plant structures, and move small cutting objects to the position of the cutting device without having to move them. Since the cutting can be performed, not only the cutting operation of the large steel material but also various waste materials generated by dismantling the plant structure can be efficiently treated, and the versatility thereof can be improved.

[0013]

FIG. 1 is a side view of a cutting work vehicle according to an embodiment of the present invention, FIG. 2 is a plan view showing a state in which a working arm is omitted, and FIG. FIG. 3 of the drawings, FIG. 4 of a side view showing a state where the cutting device is attached to the lower traveling body, FIG. 5 of a plan view showing a state where the cutting device is attached to the lower traveling body, and FIG. This will be described with reference to FIG.

First, the overall configuration of a cutting work vehicle according to the present embodiment will be described with reference to FIGS. 1 and 2. Reference numeral 1 shown in the drawing denotes a crawler traveling type cutting work vehicle. The cutting work vehicle 1 includes a crawler traveling lower traveling body 2.
1, an upper revolving unit 22 mounted on the lower traveling unit 21 so as to be pivotable about a vertical axis and provided with a cab 23;
A boom 24 a and a boom 24 a
And a work vehicle main body 2 having a bendable work arm 24 composed of an arm 24b pivotally supported at the tip of the work vehicle.

On the front side of the lower traveling body 21 of the work vehicle body 2, a long and large steel material such as a steel frame (hereinafter referred to as a large steel material) protruding forward from the front end of the crawler belt.
A cutting device 3 having a cutting blade that opens and closes in a vertical direction and has a configuration described below is mounted. A cutting / grasping device 5, which will be described later, is attached to the distal end of the working arm 24 through a link connecting pin 27 by an operating link 26 via a working device connecting pin 25. I have.

The cutting device 3 will be described with reference to FIGS. 3 to 5. Reference numeral 31 denotes a cutting device main body. The cutting device main body 31 has a cylinder accommodating portion. "U-shape" with the cutting edge facing upward
A fixed blade holding frame 32, which is a lower jaw body, to which a lower cutting blade 32a formed to be bent is fixed. At the base end of the lower cutting blade 32a of the fixed blade holding frame 32, through a horizontal opening / closing support pin 33, a convex shape is formed on the upper side, and the cutting edge is directed downward. A movable blade holding frame 34, which is an upper jaw body to which an upper cutting blade 34a formed to be bent is fixed, is pivotally connected to be openable and closable.

The movable blade holding frame 34 has a bottom connected to a movable blade operating cylinder 35 connected to the rod side via a horizontal rod connecting pin 36 mounted near the rear end of the fixed blade holding frame 32. Are connected via a horizontal bottom connection pin 37. That is,
By rotating the movable blade holding frame 34 of the cutting device body 31 in the vertical direction by the expansion and contraction of the rod of the movable blade operating cylinder 35, a large steel material can be cut by the lower cutting blade 32a and the upper cutting blade 34a. It is configured as follows.

As described above, the lower cutting blade 32a and the upper cutting blade 34a are formed to be bent in a "L shape", but the degree of bending is determined when the upper cutting blade 34a is opened most. Lower cutting blade 32a and upper cutting blade 34
When the upper cutting blade 34a is closed, the lower cutting blade 32a and the lower cutting blade 32a become closer to each other so that the distance between the cutting edges on the front end side from the middle is slightly larger than the middle. It is set so that the amount of stagger from the upper cutting blade 34a is increased. Thus, the large steel material can be cut in the gripping state, and the large steel material does not come off from between the lower cutting blade 32a and the upper cutting blade 34a during cutting.

As shown in FIGS. 4 and 5, the side surface of the cutting device main body 31 has a "this shape" as shown in FIGS.
(See FIG. 4), and a bonding structure 38 having a rectangular shape in plan view and having a configuration described later is fixed. The joining structure 38 is formed by bending the upper and lower surfaces and the end surface of the cutting device main body 31 along the rear side thereof, and is joined while holding the rear side of the cutting device main body 31 together. And a pair of left and right brackets 38b, 38b, each of which is fixed to two locations in the left-right direction on the convex side of the joining frame 38a and provided with pin fitting holes into which pins are horizontally fitted at upper and lower sides. And one end side is fixed to both side surfaces of the cutting device main body 31, and the other end side and the upper end surface are composed of reinforcing ribs 38c, 38c fixed to the joining frame 38a.

The pin fitting hole at the lower part of the brackets 38b, 38b has a plane shape of H through a rotation fulcrum pin 46.
The mold is connected to a rotation support mechanism 4 having a configuration described later. One end of the rotation support mechanism 4 has a rotation fulcrum pin 46.
And a pair of left and right parallel main frames 41, 41 having the other end side fixed to the front side of the lower traveling body 21, and opposing side surfaces of the pair of main frames 41, 41. And a connecting cylinder 42 having an end fixed thereto. Further, the rotation cylinder 4 is connected to each of the pair of main frames 41 via a bottom connection pin 44.
The bottom sides of the rods 3 and 43 are connected, and the ends of the rods are connected to rod connecting pins 45 and 45 fitted in pin fitting holes below the brackets 38b and 38b.

FIG. 1 and FIG.
This will be described with reference to FIG.
A pair of brackets 51 are connected to the distal end of the arm 24b via the working device connecting pin 25 and connected to the operating link 26 via the link connecting pin 27 (one of them is shown in the figure). ). A turning mechanism mounting plate 52 is fixed to the opposite side of the brackets 51, and the turning mechanism mounting plate 52 is driven by a hydraulic motor 53 a provided on the bracket 51 side of the turning mechanism mounting plate 52. A turning mechanism 53 is provided.

The turning mechanism 53 has a cylinder housing portion, a fixed holding portion 54b formed in a wavy shape at the front end portion, and a fixed cutting blade 5 at the back of the fixed holding portion 54b.
A fixed frame 54, which is a cutting / holding body provided with 4a, is fixed. Fixed cutting blade 54 of this fixed frame 54
A movable gripping portion 55 formed in a wavy shape at the distal end portion via a support pin 56 orthogonal to the center of rotation of the fixed frame 54 at the distal end portion with the fixed gripping portion 54b.
The movable frame 55, which is a cutting / grasping body, is provided with a movable cutting blade 55a for cutting equipment and the like between the fixed cutting blade 54a and the back side of the movable gripping portion 55b. Is pivoted to.

Further, the tip of a rod of a movable blade actuating cylinder 57 having a bottom connected to the movable frame 55 via a bottom connecting pin 58 attached near the turning mechanism 53 of the fixed frame 54 is a rod. The fixed cutting blade 54a and the movable cutting blade 5 are pivotally mounted via a connecting pin 59, and the movable blade holding frame 55 is rotated by expansion and contraction of the rod of the movable blade operating cylinder 57.
5a, the steel material is cut, and the fixed gripping portion 54b and the movable gripping portion 55b can grip and release the object. The swivel joint 60 having a well-known configuration can be seen from a hole formed near a fixing portion of the bracket 51 to the turning mechanism mounting plate 52.

The operation of the cutting work vehicle 1 having the above structure will be described below.
The lower cutting blade 3 fixed to the fixed blade holding frame 32
2a and a cutting device 3 having an upper cutting blade 34a fixed to a movable blade holding frame 34 that opens and closes with a pivoting fulcrum pin 33 as a fulcrum. Since the cutting device 3 is not mounted on the work vehicle, stability is not impaired even when the cutting device 3 is mounted on a work vehicle body smaller than the conventional one. This allows
Rather, the position of the center of gravity is lowered, and the stability of the vehicle is increased. In addition to being able to easily cut a long and large large steel material in a stable state by the cutting device 3, initial costs and running costs are reduced. In addition, there is an excellent effect that it can be put into a narrow work site. further,
As described above, since the position of the center of gravity is lowered and the stability of the vehicle is increased, there is also an effect that it is possible to mount the large and high-performance cutting and holding device 5.

The cutting device main body 31 of the cutting device 3
Is a fixed blade which is rotatably supported in a vertical direction via a pivot fulcrum pin 46 by a pivot support mechanism 4 fixed to the lower traveling body 21 of the work vehicle main body 2 and to which a lower cutting blade 32a is attached. Since the large-sized steel material can be cut in a stable state by depositing the holding frame 32 on the ground, there is an effect that safety at the time of cutting the large-sized steel material is improved.

Further, as described above, the fixed frame 54 having the fixed holding portion 54b and the fixed cutting blade 54a, the movable holding portion 55
b and a movable frame 55 having an openable and closable blade 55a, and a swivel for rotating the fixed frame 54 and the movable frame 55 around an axis perpendicular to an open / close support pin 56 of the movable frame 55 as a center of rotation. A cutting and holding device 5 having a mechanism 53 is mounted.

Therefore, for example, when moving the work site, the cutting device main body 3 (including the joint structure 38) removed.
The large steel material to be carried out is gripped by the cutting and holding device 5 and loaded on a trailer or the like, the large steel material to be cut is moved to the position of the cutting device 3, and the cutting device 3 It is possible to cut off dissimilar materials such as wood attached to steel materials and the like, to sort out various scattered waste materials generated at the time of dismantling of the plant structure, and to cut small cutting objects into the cutting device 3. Since it can be cut without moving it to a position, it can not only cut large steel materials, but also efficiently treat various waste materials generated by dismantling plant structures, improving its versatility. Occurs.

In the above description, the cutting and turning mechanism provided with the turning mechanism has been described.
Although the case of the gripping device 5 has been described as an example, the invention is not limited to this, and the technical idea of the present invention can be applied to a cutting and gripping device having a configuration not provided with a turning mechanism. The scope of the technical idea of the present invention is not limited by the above embodiment.

[0029]

As described above, according to the cutting work vehicle of the first aspect of the present invention, the lower traveling body of the work vehicle has:
With a configuration in which a cutting device having an upper jaw body and a lower jaw body that relatively opens and closes in the vertical direction is mounted, even if this cutting device is mounted, the stability of the vehicle is not impaired,
A large and heavy cutting device can be mounted on a work vehicle smaller than before. As a result, the position of the center of gravity is lowered, and the stability of the vehicle is increased, so that a long and large large steel material can be cut in a stable state by the cutting device, the initial cost and running cost are reduced, and the work site is narrow. An excellent effect of being able to be introduced into the system.

Further, according to the cutting work vehicle according to the second aspect of the present invention, in addition to the effect of the cutting work vehicle according to the first aspect, cutting is performed on the opposing sides of the upper jaw body and the lower jaw body. Since the blade is attached and the upper jaw body opens and closes vertically with respect to the lower jaw body, the steel material supported by the cutting blade of the lower jaw body while supporting the steel material with the cutting blade of the lower jaw body. The cutting can be performed by the cutting blade of the lower jaw and the cutting blade of the upper jaw.

Further, according to the cutting work vehicle according to the third aspect of the present invention, the cutting device is supported rotatably in the vertical direction with respect to the lower traveling body, and deposits the lower jaw on the ground. As a result, the steel material can be cut in a more stable state, so that the safety during the cutting operation is improved.

Further, according to the cutting work vehicle according to the fourth aspect of the present invention, the working device attached to the tip of the working arm includes:
Because it is an openable and closable gripping device having at least a cutting blade and a gripping portion, for example, when moving at a work site, the detached cutting device is cut by a large steel material to be carried out by the cutting and gripping device. It can hold and load on a trailer, move large steel materials to be cut to the position of the cutting device, tear off the steel materials bitten by the cutting device, and various other factors that occur when dismantling plant structures. It is possible to cut scattered waste materials without sorting or moving small cutting objects to the position of the cutting device. Waste material can be efficiently treated, and the versatility thereof is improved.

[Brief description of the drawings]

FIG. 1 is a side view of a cutting work vehicle according to an embodiment of the present invention.

FIG. 2 is a plan view of the cutting work vehicle according to the embodiment of the present invention, showing a state where a work arm is omitted.

FIG. 3 is a side view of the cutting device according to the embodiment of the present invention.

FIG. 4 is a side view showing a state in which the cutting device is mounted on the lower traveling body according to the embodiment of the present invention.

FIG. 5 is a plan view showing a state in which the cutting device is mounted on the lower traveling body according to the embodiment of the present invention.

FIG. 6 is a side view of the cutting and holding device according to the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cutting work vehicle 2 ... Work vehicle main body, 21 ... Lower traveling body, 22 ... Upper revolving body, 23 ... Driver cab, 24 ... Working arm, 24a ... Boom, 2
4b: Arm, 25: Working device connecting pin, 26: Working link, 27: Link connecting pin 3: Cutting device, 31: Cutting device body, 32: Fixed blade holding frame, 32a: Lower fixed cutting blade, 33: Opening / closing support Pin, 34: movable blade holding frame, 34a: upper movable cutting blade, 35: movable blade operating cylinder, 36: rod connecting pin, 37: bottom connecting pin, 38: joining structure, 38a
... Junction frame, 38b ... Bracket, 38c ... Reinforcing rib 4 ... Rotation support mechanism, 41 ... Main frame, 42 ... Connection cylinder,
43 ... rotating cylinder, 44 ... bottom connecting pin, 45 ...
Rod connecting pin, 46: rotating fulcrum pin 5: cutting / grasping device, 51: bracket, 52: turning mechanism mounting plate, 53: turning mechanism, 53a: hydraulic motor, 54
... fixed frame, 54a ... fixed cutting blade, 54b ... fixed gripping part, 55 ... movable frame, 55a ... movable cutting blade, 55
b: movable gripping part, 56: open / close support pin, 57: movable blade operating cylinder, 58: bottom connecting pin, 59: rod connecting pin, 60: swivel joint

Claims (4)

[Claims] 1. An undercarriage, and an upper revolving body pivoted about a vertical axis is provided on the undercarriage, and the upper revolving body has a bendable work device mounted on a tip thereof. A working vehicle having a flexible working arm supported up and down, wherein a cutting device having an upper jaw body and a lower jaw body which are relatively opened and closed in the vertical direction is mounted on the lower traveling body. Working vehicle. 2. A cutting blade is attached to the upper jaw body and the lower jaw body on opposite sides thereof, and the upper jaw body opens and closes vertically with respect to the lower jaw body. A cutting work vehicle according to claim 1. 3. The cutting device according to claim 1, wherein the cutting device is supported rotatably in a vertical direction with respect to the lower traveling body. Working vehicle. 4. The apparatus according to claim 1, wherein the working device is an openable / closable cutting / holding device having at least a cutting blade and a holding portion. The cutting work vehicle described.