JPS6310207B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a high-temperature working machine that performs high-temperature work such as removing slag and base metal adhering to the mouth of a converter.

(Prior art) For example, in a steel mill, (a) Removal of slag and metal (hereinafter referred to as adhesion) adhering to the mouth of a converter (b) Prior to removing this adhesion, a continuous ring-shaped Oxygen cutting of deposits (c) Repair by spraying refractory material if the inner wall of the converter or ladle is eroded or worn out (d) Scraping of bricks to replace the bricks on the inner wall of the converter or ladle, etc. Various tasks are performed periodically or as needed.

In the past, this kind of work was generally done by scraping off the deposits with the tip of a log held in the worker's hand (deposit removal work), or by blowing oxygen or refractory spray pipes held in the same hand into the furnace, etc. Feeding the jet and bringing the injection port close to the target was all done manually by humans. For this reason, work efficiency is poor,
In addition, these operations are carried out under high heat while the converter remains at a high temperature due to the need to avoid heat loss in the converter, making it very dangerous and hard work for the workers. Furthermore, since brick scraping work must be carried out closer to the converter or ladle than other operations, the converter etc. must be cooled to a certain extent;
Repair work was time consuming and the operating rate of the converter was decreasing.

In addition, as a means to perform the deposit removal work in (a) mechanically without relying on manual labor, as shown in Japanese Patent Application Laid-Open No. 59-83710, the furnace was held upside down so that the mouth of the furnace faced downward. A method has been proposed in which a scraper device is mounted on a cart that moves below the converter, and the scraper device scrapes off deposits from the furnace mouth in a planer shape. However, according to this method, the bogie may derail due to the reaction and impact when the scraper device collides with the deposit due to the moving force of the bogie.
Problems such as breakage of the truck coupler and other structures are likely to occur, and furthermore, there are drawbacks such as the fact that only deposits protruding from the furnace mouth can be removed.

(Objective of the Invention) Therefore, the present invention provides a high-heat work machine that can efficiently, safely, and reliably perform the various high-heat works described above using mechanical power. .

(Structure of the Invention) A feature of the first invention is that both the first and second working devices are mounted on a movable machine base toward the front of the machine base, and the first working device is attached to the movable machine base. The boom support is attached to the machine platform so that it can be rotated to raise and lower, a cylinder that raises and lowers the boom support, and both outer and inner boom bodies are telescopically extendable and retractable. A boom supported to be movable in an axial direction relative to a support body and rotatable around an axis; a boom telescoping cylinder that extends and retracts the boom by moving an inner boom body of the boom in an axial direction relative to an outer boom body; means for rotating the outer boom body around the boom axis; boom position fixing means for fixing the outer boom body in at least two positions in the axial direction with respect to the boom support body; The second working device is composed of an attached ripper and a ripper cylinder that rotates the ripper, and the second working device includes an arm base fixed to the machine base, and a ripper cylinder attached to the tip of the arm base so as to be rotatable around an axis. an arm rotating means for rotating the arm around its axis; a pipe support frame attached to the tip of the arm so as to be tiltable about a horizontal axis perpendicular to the arm axis; and a frame for tilting the pipe support frame. The pipe supporting frame includes a pipe clamping means capable of holding a pipe such as an oxygen blowing pipe, and a pipe moving means for moving the pipe held by the pipe clamping means in the pipe axial direction. and a pipe rotation means for rotating the pipe about its axis.

Further, the second invention is characterized in that, in addition to the configuration of the first invention, the machine base is provided with a driver's cab, and the first and second inventions are arranged in the driver's cab and on both left and right side surfaces of the machine base. A high-temperature working machine is provided with an operation section for controlling the operation of a two-car working device.

(Example) Reference numeral 1 denotes a machine base, and on this machine base 1, a first working device A for scraping and removing deposits or bricks;
A second working device B, which performs oxygen cutting of deposits or repair work by spraying refractory material, is mounted facing forward of the machine.

Machine 1 is the same as the base machine of the hydraulic excavator.
Crawler type lower running body 1a and this running body 1a
It consists of an upper rotating body 1c mounted on top via a rotating bearing 1b. A driver's cab 11 is provided in the upper revolving body 1c of the machine 1, and a main operating section 12 provided in the operator's cab 11 controls the traveling and turning of the machine 1 and the operation of both the first and second working devices A. , B (described later) can be controlled. In addition to the main operation section 12, sub-operation sections 13 and 14 are provided on both left and right side surfaces of the rear part of the revolving upper structure 1c. This allows for exactly the same control. In this way, the operator can arbitrarily select the most convenient position for operation from among the three operating sections 12, 13, and 14, depending on the type of work, position, etc. In addition, the sub-operation parts 1 on both the left and right sides
3 and 14 are pivotally connected at one end to the upper revolving body 1c via brackets 13a and 14a, respectively, so as to be rotatable around a vertical axis. As a result, both the sub-operation parts 13 and 14 can be operated at a position where the workpiece can be easily seen by protruding to the side of the machine as shown by the imaginary line in FIG. It is designed so that it can be stored along with the machine base 1, as shown by the solid line in Figures 1 and 2, so as not to get in the way.

The first working device A is the upper revolving body 1c of this machine base 1.
The second working devices B are mounted on one side of the revolving body 1c so that their axes are parallel to each other.

Next, these working devices A and B will be explained.

First working device A The first working device A includes a boom 2 configured to be extendable and retractable in a telescopic manner by outer and inner boom bodies 2a and 2b, a boom support 3 that supports this boom 2, and a boom 2 (the tip of the inner boom body 2b) is mainly composed of a ripper 4 for scraping off deposits, etc.

The lower end of the boom support 3 is pivotally connected to the bracket 15 of the upper revolving structure 1c via a horizontal shaft 16, and the boom support 3 can be rotated up and down about the horizontal axis 16 by a hoisting cylinder _C1 . That's what I do. The boom support 3 has a cylindrical boom holder 31 on the upper part, and a cylindrical rolling drum 21 is mounted inside the boom holder 31, with a bearing 22 at one end in the axial direction and a plurality of bearings in the circumferential direction at the other end. The drum is fitted so as to be rotatable around the drum axis while being supported by the support roller 23. In Figures 4 and 5,
_m1 is a motor for rotationally driving this rolling drum 21 (hereinafter referred to as a boom rotation motor),
It is attached to the outer periphery of the boom holder of the boom support 3. Pinion gear on the rotating shaft of this motor _m1
g ₁ is installed, and this pinion gear g ₁ is attached to a ring gear fixed to the outer circumference of the outer ring of the rolling drum support bearing 22.
By meshing with gear g ₂ , the rotation of motor m ₁ is transmitted to rolling drum 21 via these gears g ₁ and g ₂ . Outer boom body 2 of boom 2
A is formed into a rectangular cylindrical shape, and is fitted into the rolling drum 21 so as to be able to slide in the axial direction so as to pass through the drum 21. A pad 21a that is in contact with the outer circumferential surface of the outer boom body 2a is fixed to the inner circumferential surface of the rolling drum 21, and the pad 21a controls the rotation of the rolling drum 21 from the outer boom body 2a.
and supports the outer boom body 2a so as to be slidable in the axial direction.

When the work equipment is moved, the outer boom body 2a is set in a retreat position where the amount of forward protrusion from the rolling drum 21 is small, as shown in FIGS. 1 to 3, and the boom length is maximized. When it is desired to increase the length, as shown in FIG. 7, it is moved to a forward position where it protrudes forward as much as possible from the rolling drum 21 by means described later. The boom support 3 has a fixing pin 32 for fixing the outer boom body 2a in both the backward and forward positions, which is movable up and down (it can also be inserted and removed in the up and down direction) via a bracket 33 at the bottom of the rear end. It is installed. On the other hand, the outer boom body 2a has pin holes (hereinafter referred to as front pin holes and rear pin holes) h ₁ ,
h ₂ is provided, and the fixing pin 32 is inserted into the front pin hole h 1 when the outer boom body is in the retracted position, and into the rear pin hole h ₁ when the outer boom body is in the forward position.
By inserting the outer boom body _2a into both positions, the outer boom body 2a can be fixed in both positions.

The inner boom body 2b has a square box-shaped tip block _2b2 fixed to the tip of a main body part 2b1 that is slidably fitted in the outer boom body _2a in the axial direction, and a hollow bifurcated lip is attached to the tip block _2b2 . It consists of parts 2b and ₃ that are integrally connected. Main body part 2
b ₁ is formed into a rectangular tube shape corresponding to the outer boom body 2a, with four pipes 24...... at the four corners, and each pipe 24... of this main body part 2b ₁ is
The outer boom body 2a is supported by a total of eight guide rollers 25 at two locations at the front thereof. With this guide roller 25......
The inner boom body 2b is supported so as to be slidable in the axial direction, and the rotation of the outer boom body 2a is transmitted to the inner boom 2b. _C2 is a cylinder for extending and retracting the boom, and the cylinder bottom is fixed inside the rear end of the outer boom body 2a, and the rod end is fixed inside the inner boom-shaped main body _2b1 via a bracket 26. Due to this telescopic operation of the cylinder _C2 , the inner boom body 2b slides in the axial direction, and the boom 2 performs a so-called one-stage telescopic operation.

The ripper 4 is tiltably attached to the ripper attachment portion _2b3 at the tip of the inner boom body via a pivot 41. _C3 is a ripper cylinder, and the cylinder bottom is attached to the bracket 2 in the inner boom main body part _2b1 .
6, and the rod end is fixed to the upper part of the ripper 4 via a push rod 42. 43 is an idler link installed between the push rod 42 and the inner surface of the tip block _2b2 , 44 is a shaft connecting this idler link 43 and the push rod 42, and 45 is an idler link 43 and the tip block 2.
A shaft ₄₆ connects the tip of the push rod 42 and the ripper 4. Ritupa 4
has a straight front claw 4a on the lower front part and a rear claw 4b bent backwards on the rear part thereof, and these two claws 4a, 4b can be adjusted depending on the situation of the workpiece, etc.
can be used appropriately.

Note that the tip block 2 of the inner boom body 2b
b ₂ , the ripper mounting portion 2b ₃ and the ripper 4, and the ripper operating mechanism such as the ripper cylinder C ₃ are directly connected to each other.
Since they are exposed to high heat, it is necessary to take these cooling measures to prevent overheating. Therefore, in this work machine, cooling water is supplied to and collected from the boom tip structure such as the ripper 4 through the four pipes ₂₄ constituting the main body 2b1 of the inner boom body 2b. I have to. That is, the tip block _2b2 has a double wall structure as shown in FIGS. 8 and 10, and the space S formed between the inner and outer walls is
A large number of tunnel-shaped flow paths 28, 28a,
28b. These channels 28, 28a,
28b is divided into two systems: a tip block system that cools the area around the tip block _2b2 , and a ripper system that cools the ripper mounting portion _2b3 and the ripper 4, and the four pipes 24 of the inner boom main body portion _2b1 . ......
Two of these pipes (lower left and upper right pipes in Figure 10) are used to send and return cooling water to the tip block system, and the other two (lower right and upper left pipes in Figure 10) are used to supply cooling water to the lipper system. I try to use it for both sending and returning.

In FIGS. 8 to 10, 28a indicates a cooling water supply channel of the ripper system, 28b indicates a return channel, and many channels 28 other than these are cooling water circulation channels of the tip block system. shows. These circulation channels 28 are sequentially connected to each other at one end,
The cooling water flows in a meandering manner around the four circumferences of the tip block _2b1 through the circulation flow path 28, and the tip block _2b1 is cooled. In Figure 10, ○†g

Claims (1)

[Claims] 1. A first and a second working device are mounted on a movable machine base toward the front of the machine base, and
The working device is configured to be extendable and retractable in a telescopic manner by a boom support body attached to the above-mentioned machine base so as to be able to be rotated in a manner that it can be raised and lowered, a levitation cylinder that raises and lowers this boom support body, and both outer and inner boom bodies. A boom in which the outer boom body is axially movable with respect to the boom support body and rotatably supported around the axis, and a boom whose inner boom body is moved axially with respect to the outer boom body to extend and retract the boom. a telescoping cylinder; a means for rotating an outer boom body of the boom around the boom axis; a boom position fixing means for fixing the outer boom body to the boom support at at least two positions in the axial direction; and an inner boom body of the boom. It consists of a ripper rotatably attached to the tip and a ripper cylinder that rotates the ripper, and the second
The working device includes an arm base fixed to the machine base, an arm attached to the tip of the arm base so as to be rotatable around the axis, an arm rotation means for rotating the arm around the axis, and an arm rotation means for rotating the arm around the axis. The pipe support frame is provided with a pipe support frame attached to the tip so as to be tiltable around a horizontal axis orthogonal to the arm axis, and a frame tilting means for tilting the pipe support frame, and the pipe support frame is equipped with a pipe such as an oxygen blowing pipe. pipe clamping means capable of holding the pipe, pipe moving means for moving the pipe held by the pipe clamping means in the pipe axial direction, and pipe rotation means for rotating the pipe about its axis. A high-heat work machine that is characterized by: 2. Both the first and second working devices are mounted on a movable machine base toward the front of the machine base, and the first and second working devices are mounted on a movable machine base,
The working device is configured to be extendable and retractable in a telescopic manner by a boom support body attached to the above-mentioned machine base so as to be able to be rotated in a manner that it can be raised and lowered, a levitation cylinder that raises and lowers this boom support body, and both outer and inner boom bodies. A boom in which the outer boom body is axially movable with respect to the boom support body and rotatably supported around the axis, and a boom whose inner boom body is moved axially with respect to the outer boom body to extend and retract the boom. a telescoping cylinder; a means for rotating an outer boom body of the boom around the boom axis; a boom position fixing means for fixing the outer boom body to the boom support at at least two positions in the axial direction; and an inner boom body of the boom. It consists of a ripper rotatably attached to the tip and a ripper cylinder that rotates the ripper, and the second
The working device includes an arm base fixed to the machine base, an arm attached to the tip of the arm base so as to be rotatable around the axis, an arm rotation means for rotating the arm around the axis, and an arm rotation means for rotating the arm around the axis. The pipe support frame is provided with a pipe support frame attached to the tip so as to be tiltable around a horizontal axis orthogonal to the arm axis, and a frame tilting means for tilting the pipe support frame, and the pipe support frame is equipped with a pipe such as an oxygen blowing pipe. pipe clamping means capable of holding the pipe, pipe moving means for moving the pipe held by the pipe clamping means in the pipe axial direction, and pipe rotation means for rotating the pipe about its axis. Become,
On the other hand, the machine base is provided with a driver's cab, and operating sections for controlling the operations of the first and second working devices are provided in the driver's cab and on both left and right side surfaces of the machine base, respectively. A high-heat work machine characterized by: