JP3706490B2 - Rail traveling type refractory dismantling machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a rail traveling type refractory dismantling used to dismantle the refractory when repairing the refractory applied to the inner surface of the reed that has deteriorated due to the use of the molten iron and slag through which it passes. Related to the machine.
[0002]
[Prior art]
The molten pig iron discharged from the blast furnace is injected into a transfer kneading vehicle after passing through a discharge gun of about 20 m in length. Usually, a blast furnace is provided with two or more taps. Since high temperature molten pig iron and slag flow in this brewery, the refractory material applied to the inner surface of the brewery will wear out and cause chemical degradation.
In addition, the refractory material applied to the inner surface of the firing rod is significantly degraded by repeated cooling and heating by switching the firing port.
Therefore, repair work consisting of the dismantling of the deteriorated refractory on the inner surface and the construction and drying of a new refractory on the inner surface is performed about once a month.
In recent years, the refractory dismantling work in such a series of work is generally movable on the casting floor while moving the casting on the casting floor, and can also move in the longitudinal direction of the cooking. In some large blast furnaces, which are carried out using a mobile refractory demolition machine and rarely have enough space, the demolition work is temporarily moved to a maintenance place outside the cast floor using a hoist. It has been broken.
[0003]
A mobile refractory dismantling machine has been proposed in, for example, Japanese Patent Laid-Open Nos. 4-176717 and 4-176918 as an example (hereinafter referred to as Conventional Method 1). That is, as shown in FIG. 5, the refractory is excavated and dismantled by the excavating unit 5 in which the excavating drum 4 is attached to the tip of the boom 3 provided on the swivel 2 at the top of the crawler traveling carriage 1, and the crawler 6 There is disclosed a crawler track type demolition machine that excavates and dismantles the output refractory while traveling in the longitudinal direction.
[0004]
In the method of the conventional method 1, firstly, a driving operator rides on the crawler traveling vehicle cab, and the operation of feeding the excavating drum 4 is performed by the folding operation of the boom 3 and the excavating unit 5 with the dismantling machine stopped. This operation requires skill because it is necessary.
Secondly, the magnitude of the pressing force of the excavating drum 4 against the dredging wall affects the depth of biting of the cutting blade into the dredging wall, and therefore the excavation efficiency. A turning couple acts around the turning center of the scraper due to the horizontal direction and the reaction force from the dredging wall acting on the excavation drum 4, but the frictional force between the crawler belt 6 and the floor surface 7 is limited, so that There is a limitation on the pressing force, that is, the excavation efficiency.
[0005]
For this reason, another example (hereinafter referred to as conventional method 2) is proposed in Japanese Utility Model Laid-Open No. 6-41961.
That is, as shown in FIGS. 6 and 7, on a rail traveling carriage 10 provided with wheels 12 that travel on the rail 8, it is supported so that it can expand and contract in the vertical direction and traverse or tilt in the width direction. A so-called rail traveling type demolition machine has been proposed in which an excavation unit 5 having a rotary excavation drum 4 having the above is arranged.
[0006]
In this method, since the turning couple is supported by the fitting of the flange of the wheel 12 and the rail, the excavation reaction force can be sufficiently increased.
In addition, since the dismantling machine can travel along the rail 8, it can be sent in the longitudinal direction while keeping the position and posture of the excavation drum 4 constant or while changing the position and posture of the excavation drum 4. That is, the operation is easy, and automation and reduction of human power are easy.
[0007]
[Problems to be solved by the invention]
In the rail traveling type demolition machine, the traveling driving force needs to be a large force including the normal bogie traveling resistance and the excavation feed reaction force in the longitudinal direction of the rod.
However, since the frictional force between the wheel and the rail is small, it is difficult to generate a necessary running force by causing a slip between the wheel and the rail due to insufficient contact pressure in the general weight of the demolition machine. In other words, there is a problem in that the excavation reaction force is limited, that is, the excavation efficiency is restricted.
Moreover, in excavation by a rotating drum having a crushing type cutting blade, there is a problem that an impact load acts and the dismantling machine vibrates up and down.
The present invention is intended to solve the above-described conventional problems, and provides a rail traveling type demolition machine that does not cause slippage between a wheel and a rail and suppresses vibration of the demolition machine by excavation. With the goal.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the rail traveling type refractory dismantling machine according to the present invention is an apparatus used for dismantling work of firewood refractory through which a high-temperature melt is passed, and is arranged so as to straddle the firewood on the floor, A carriage that can travel on a rail provided along the fence with traveling drive wheels, and supported by the carriage so as to be movable or tiltable in the vertical direction and width direction of the fence, and a crushing cutting blade at the lower end thereof In an apparatus equipped with a drilling unit having a rotating drum having a roller mechanism provided with a lower pressure roller that contacts and separates from a frame provided at the lower part of the rail and applies a rail pinching force between the driving wheel and the frame. It is characterized by that.
Moreover, the above-mentioned rail traveling type fire-resistant refractory demolition machine can be equipped with a vacuum suction type cleaner that collects fire-resistant refractory demolition scraps.
[0009]
The roller mechanism is composed of a roller lifting mechanism provided on the traveling carriage and a lower pressure roller (hereinafter referred to as a lower roller) provided so as to be movable up and down below and to be able to contact and separate from the lower frame. The lower roller is lifted upward by the mechanism, and this lower roller is crimped to the rail lower frame from below, and the rail is sandwiched between the frame and the running wheel, so that the rail by crimping the lower roller in addition to the weight of the dismantling machine. By applying the pinching force, the contact load between the wheel and the rail can be increased. Accordingly, a large driving force can be generated without causing a slip between the wheel and the rail, and the dismantling machine can be driven against the rod longitudinal direction excavating drum feed resistance.
In addition, since the dismantling machine is clamped by the lower roller lifting mechanism to restrict the movement in the vertical direction, the vertical vibration of the dismantling machine can be suppressed.
Furthermore, in the present invention, by providing a vacuum suction type cleaning machine, it is possible to automatically discharge and remove the cutting waste of the fired refractory material that has been cut and disassembled.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
FIG. 1 is a side sectional view showing an embodiment of a fireproof refractory demolishing machine according to the present invention, and FIG. 2 is a front view. FIG. 3 shows details of a part in FIG.
In the embodiment shown in the figure, a lower frame 9 for fixing the rails 8 and 8 is laid on both sides of the rod 16 provided on the casting floor in parallel with the rod, and a traveling carriage 10 is placed on both rails 8 and 8. However, it engages with the traveling drive wheel 12 attached to the lower portion, and is placed so as to be able to travel so as to straddle the saddle 16.
In the rail traveling carriage 10, an excavation unit 5 having a rotating drum 4 attached to the tip is installed so as to be driven to rotate and extend and retract.
[0011]
The rotating drum 4 is pressed against the refractory wall 11 while being rotated and fed in the longitudinal direction of the heel to excavate the heel wall. At this time, a reaction force is applied to the rotary drum 4 in the vertical angle direction, and a longitudinal excavation feed reaction force opposite to the traveling direction is applied to the longitudinal direction of the rod.
Therefore, between the driving wheel 12 and the rail 8, in addition to the normal bogie running resistance of about 0.3 to 1.0 ton, the above-mentioned longitudinal feed reaction force, which usually overcomes about 3 to 5 ton of running driving force, about 3. A frictional force corresponding to 3 to about 6 tons is required.
[0012]
As shown in FIGS. 1 and 3 (enlarged view of FIG. 2a), the lower roller lifting mechanism 14 is lifted and lowered by a lifting rod 14b that slides in a lifting guide 14a fixed to the carriage 10. It consists of a cylinder 14c to be driven, and a lower press roller 13 is attached to the lower part of the lifting rod 14a via a cam follower support member 14d. The rail 8 is fixed to the lower frame 9, and a lower roller 13 is provided in the vicinity of the lower frame 9 so as to be able to contact and separate from the frame 9. The lower frame 9 is a member such as H-shaped steel, for example, and has a space in which the lower roller 13 can rotate.
The lower roller 13 is an idle roller, and has a structure that can be moved up and down by the drive cylinder 14c of the lifting mechanism as described above, and is lifted upward during excavation travel, and is crimped to the flange of the lower frame 9 from below to travel drive wheels. The rail 8 is sandwiched between the rail 12 and the lower frame 9.
[0013]
In the state without the lower roller 13 of the conventional structure, the contact pressure between the traveling drive wheel 12 and the rail 8 is only the load applied to the drive wheel 12 of the dismantling machine weight, and if the dismantling machine weight is about 10 to 20 tons, Of that, about 5 to 10 tons. If the coefficient of motion friction is about 0.25, the driving force that the driving wheel 12 does not idle is about 1.25 to 2.5 tons, and the required driving force of about 3.3 to about 6 tons is satisfied. do not do. That is, even if the driving wheel rotational driving torque is increased, the driving wheel is idle.
[0014]
When the lower roller 13 is installed, the contact load between the traveling drive wheel 12 and the rail 8 is normally a load equivalent to the dismantling machine own weight and a pressing force of the lower roller 13. If the pressing force of the lower roller 13 is set to about 20 tons, for example, the contact load between the wheel 12 and the rail 8 is about 25 to 30 tons, and therefore if the coefficient of motion friction is assumed to be 0.25, the driving wheel 12 will not idle. The traveling driving force is about 6.25 to 7.5 tons, which satisfies the required traveling driving force of about 3.3 to about 6 tons. In other words, it is possible to feed the rotary drum 4 in the longitudinal direction without the drive wheel 12 idling. In addition, when the excavation is performed by the rotating drum 4 having the crushing type cutting blade, the traveling carriage 10 moves in the vertical direction on the rail 8 by the rail 8 being sandwiched between the wheel 12 and the lower roller 13 against vibration due to impact. Therefore, vertical vibrations can be suppressed.
[0015]
In the rail traveling type fire-resistant refractory dismantling machine, as a means for reducing insufficient contact pressure between the drive wheel 12 and the rail 8 during the excavation of the rail traveling type fire-resistant material, an increase in the weight of the demolishing machine can be easily considered. For example, a drainage facility for excavating dredged wall demolition waste during dredging work. Conventionally, this has been carried out by a hydraulic excavator with a bucket attached to a dismantling machine, but there is a problem that the discharge time is long and work personnel cannot be omitted because of the intermittent discharge by the bucket. Also, an unnecessary increase in dead weight increases equipment costs and is not economical.
[0016]
FIG. 4 is a side sectional view of another embodiment of the present invention, showing an example in which the contact load between the drive wheel 12 and the rail 8 is increased.
As shown in the drawing, a vacuum suction type is adopted as the refractory demolition waste cleaner 15 and mounted on the demolition machine. Such a cleaner includes an electric vacuum pump 6 provided on a gantry 21, a suction hose 17, a dry dust collector 18, a collection hopper 19, an exhaust-side silencer 20, and the like. Reference numeral 22 denotes a control panel. By doing so, it is effective to increase the contact pressure between the drive wheel 12 and the rail 8 described above by combining the weight of the cleaner 15 and the pressure bonding by the lower roller 13 while automating the dismantling waste. Further, idling of the drive wheel 12 can be prevented. Moreover, the vibration of the dismantling machine can be reduced.
In addition, when the dead weight of the vacuum suction type refractory demolition waste cleaner 15 is sufficiently large, the contact load of the lower roller 13 can be reduced. In addition, when there is a restriction on its own weight and external dimensions, not all of the cleaning machines are necessarily mounted, and for example, a suction hose 17, a dry dust collector 18, a collection hopper 19, etc. can be mounted.
[0017]
【The invention's effect】
As described above, according to the rail traveling type refractory dismantling machine according to the present invention, the lower roller is used for the contact load shortage between the driving wheel and the rail during the excavation of the wall refractory, and hence the idling of the driving wheel. The contact load is increased by the addition of a crimping load, and it is possible to feed the rotating drum without idling the driving wheel against the rotating drum feed resistance sufficient for excavation efficiency and to suppress vibration during excavation. It exhibits the excellent effect of being able to. In addition, when a 樋 refractory demolition scrap cleaner is installed, the contact load can be increased, adjusted and vibration reduced, and cutting scraps after the refractory refractory dismantling can be automatically removed to repair 樋Work can be performed efficiently.
[Brief description of the drawings]
FIG. 1 is a side cross-sectional explanatory view showing an embodiment of a rail traveling type fire-resistant material dismantling machine according to the present invention.
FIG. 2 is a front explanatory view showing an embodiment of a rail traveling type fire-resistant material dismantling machine according to the present invention.
FIG. 3 is an enlarged view of a part in FIG.
FIG. 4 is an explanatory side sectional view showing an embodiment of a rail traveling type refractory demolition machine equipped with a vacuum suction type demolition waste cleaning apparatus according to the present invention.
FIG. 5 is a side sectional view showing an example (conventional method 1) of a conventional mobile refractory dismantling machine.
FIG. 6 is a side sectional view showing another example (conventional method 2) of a conventional mobile refractory dismantling machine.
7 is a front view of FIG. 6. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Crawler traveling trolley 2 Swivel 3 Boom 4 Rotating drum 5 Excavation unit 6 Crawler 7 Floor surface 8 Rail 9 Rail lower frame 10 Rail traveling trolley 11 Anchor wall 12 Traveling drive wheel 13 Lower pressure roller 14 Lower pressure roller lifting drive device 14a Lift Guide 14b Lifting rod 14c Lifting drive cylinder 14d Cam follower support member 15 Vacuum suction type demolition waste cleaner 16 Electric vacuum pump rod 17 Suction hose 18 Dry dust collector 19 Supplementary hopper 20 Exhaust side silencer 22 Control panel 23

Claims (2)

A device used for dismantling work of firewood refractories for flowing high-temperature melt, which is disposed so as to straddle the firewood on the floor, and can travel on a rail provided along the firewood with travel drive wheels, In a device provided with an excavating unit that is supported by a carriage so as to be movable or tiltable in the vertical direction and width direction of the rod and that has a crushing cutting blade at the lower end thereof, A rail traveling type refractory dismantling machine characterized in that a roller mechanism is provided that contacts and separates and applies a rail pinching force between the traveling drive wheel and the frame. The rail travel type fire-resistant refractory dismantling machine according to claim 1, which is equipped with a vacuum suction type cleaning machine for collecting fire-resistant refractory demolition waste.

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