JPH0368743B2 - - Google Patents

Description

[Detailed Description of the Invention] Conventionally, refractories for steel structures such as high-rise chimneys and steel towers,
All on-site lining work, including acid-resistant materials, was done manually. In this case, since it relied on human power, the lining speed could not be increased very much, and not only did it require a lot of manpower, but it was also dangerous due to the work being done at heights, and the work environment was extremely poor, such as the generation of dust. In addition, since the number of special workers of this kind has decreased, there have been problems such as difficulty in making work plans and long construction periods.

The present invention was proposed to solve these problems, and includes a circular girder installed inside a chimney etc. so as to be movable up and down, and a circular girder mounted on the girder so as to be movable in the circumferential direction. A self-propelled trolley, a lining material injection device for the inner circumferential surface of a chimney, etc. mounted on the self-propelled trolley so as to be movable in the vertical and longitudinal directions, and a lining material supply device for the injection device. This relates to lining devices for chimneys, etc.

Since the present invention is configured as described above,
A circular girder that is movable up and down on the inner surface of a structure such as a chimney tower is moved to a predetermined height, and a self-propelled trolley that is mounted on the girder and movable in the circumferential direction is brought to a predetermined position. At that position, the lining material supplied from the lining supply device is injected onto the inner surface of the chimney while moving the lining injection device mounted on the self-propelled cart in the vertical and front-back directions, so that the lining of a predetermined section is When the lining work around the circular girder is completed, the self-propelled trolley is moved to the next position along the circular girder and the above operation is repeated, and when the lining work around the circular girder is completed, the girder is moved up and down to the next position and the above operation is repeated. repeat the work,
In this way, the inner peripheral surface of a structure such as a chimney is lined.

As described above, according to the present invention, lining of the inner circumferential surface of structures such as high-rise chimneys and steel towers with refractory materials, acid-resistant materials, etc. can be performed by remote control from the ground or from above, without the need for workers to directly approach the surface to be lined. However, if lining work is performed,
Lining work can be performed with high efficiency, high precision, and safety.

The present invention will be described below with reference to the illustrated embodiments.

In FIG. 1, reference numeral 1 denotes the entire automatic lining device, which is suspended by a plurality of hanging ropes 3 on the inner surface of a target object 2, such as the barrel of a high-rise chimney. The hanging rope 3 is wound up and released by a hanging rope winding device (not shown) placed on the ground via a pulley 5 attached to the top 4 of the object 2 to be lined. . Further, the automatic lining device 1 is provided with three or more guides and anti-sway devices, which will be described later, to prevent collision with the object 2 to be lined. The automatic lining device 1 can be controlled in the height direction by the hanging rope winding device. This is done by controlling the device. A lining material supply device 6 for refractories, acid-resistant materials, etc. necessary for the lining process is installed on a platform 7 such as an inspection walkway, which is provided on the ground or at a certain height of the target object 2. A plurality of cables, including power and control lines for the automatic lining device 1, and hoses 8 supply materials, electricity, air, etc. necessary for lining processing.

Note that the cables and hoses are the target object 2.
Wiring and piping is carried out to the self-propelled lining device 1 using the opening of the inspection manhole 9 provided in the inspection manhole 9 or the flue opening near the ground.

FIG. 2 shows the details of the automatic lining device 1 arranged along the inner surface of the target object 2, where 10 is a circular girder, 11 is a rail provided on the circular girder 10 and laid in an annular shape, and 12 is a self-propelled cart composed of a motor, a speed reducer (not shown), wheels 13, and a guide and anti-overturn rollers 14, which moves on the annular rail 11 and runs along the inner surface of the target object 2. It is becoming possible to do this.

15 is a column for moving the lifting platform 18 up and down by a drive transmission system such as a motor 16 and screws 17;
19 is an arm that moves back and forth on the lifting platform 18 via a motor 20, a reducer pinion, and a rack 21 that meshes with the pinion; 22 is an arm that swings the lining nozzle 23 at the tip of the arm 19 by a motor reducer or the like; This is the nozzle head that operates. Furthermore, an ITV 24 and a floodlight 25 for monitoring the lining section are installed in the same column 15, and
A nozzle head moving device composed of a distance detector 26 that detects the distance between the lining nozzle and the target object is provided on the self-propelled cart 12 near the tip of the lining nozzle 23, and is adapted to the movement of the self-propelled cart 12. Correspondingly, it is possible to run along the inner surface of the target object 2.

Reference numeral 27 denotes a plurality of guide and anti-sway devices provided at the bottom of the circular girder 10 and composed of a cylinder 28, a sliding guide 29, a guide bar 30, and a guide roller 31. By pressing the roller 31 against the inner wall of the target object 2 with a constant force, the circular girder 10 is prevented from shaking, and the automatic lining device 1 is adjusted to the height of the target object 2 by operating the hanging rope winding device. When moving in the horizontal direction, the guide rollers 31 allow the device 1 to move smoothly along the inner wall. Further, as shown by the chain line in FIG. 2, even when the target object 2 is tilted, the automatic lining device 1 is kept substantially horizontal by the guide and anti-sway device 27.

32 is a cable bearing 3 for internal processing of cables and hoses 8 provided on the circular girder 10;
This is the support stand for number 3. 34 is a hanging metal fitting provided on the circular girder 10, and 35 is a base metal mesh for lining provided on the inner wall surface of the target object 2, so that the sprayed lining material can easily adhere thereto.

Since the illustrated embodiment is constructed as described above, as shown in FIG. The hanging rope 3 is fastened to the hanging fittings 34 provided at multiple locations on the circular girder 10 in the automatic lining device 1, and the first
A suspension rope winding device placed on the ground is activated by operating a ground control panel via a pulley 5 or the like provided on the top 4 of the target object 2 shown in the figure, and the automatic lining device is lifted to a predetermined height. Next, the materials necessary for lining processing, including the lining material supply hose from the lining material supply device 6, cables such as electricity and air, and hoses 8 are installed in the inspection manhole 9 provided in the target object 2 or in the smoke duct near the ground. It is connected to the connection port on the fixed end side of the cable bearing 33 through the opening. Next, the cylinders 28 of the guide and anti-sway devices 27 installed in plural units are activated, and the guide rollers 31 are pressed with a constant force against the metal steel 35 provided near the inner wall of the target object 3, thereby preventing the entire device from shaking. At the same time, the axis of the circular girder 10 is made to substantially coincide with the axis of the target object 2. Next, the operator on the ground uses the ITV 24 and floodlight 25 installed near the top of the column 15 that constitutes the nozzle head moving device to project the lining nozzle 23 onto the cathode ray tube in the operation panel.
While looking at the image near the tip of the automatic lining device, operate the hanging rope winding device to finely adjust the position of the entire automatic lining device in the height direction, and set the self-propelled trolley 12 at the origin position in the circumferential direction of the circular rail 11. do. At this time, the elevating table 18, which constitutes the nozzle head moving device and moves up and down, is set in accordance with its stroke upper limit position. Next, the motor 20 provided on the lifting platform 18 is activated to advance the arm 19 via the pinion and rack 21, and the lining nozzle 23 provided on the nozzle head 22 at the tip is connected to the wire mesh 35 provided on the inner wall surface of the target object 2. The distance between the lining nozzle tip and the metal steel 35 is set to be constant by the action of the distance detector 26 provided near the tip of the lining nozzle 23. In this way, the operator operates the lining material supply device 6 installed on the platform 7 provided on the target object 2 or on the ground via the operation panel on the ground, and supplies the lining material such as fire-resistant material or acid-resistant material with air. , or water is force-fed to the tip of the lining nozzle 23 via the cable and hoses 8, and the lining material is sprayed onto the inner wall side of the target object 2 from the tip of the lining nozzle 23. Simultaneously with the above operation, the operator drives the motor of the self-propelled cart 12 via the operation panel to cause the nozzle head moving device on the self-propelled cart 12 to travel around the inner wall of the target object 2 at a constant speed. The lining process is automatically performed. A self-propelled trolley 12 runs on a rail 11 laid on a circular girder 10,
After one rotation, the operator stops driving the self-propelled cart 12 using the operating panel, activates the drive motor 16, and lowers the platform 18 by a fixed stroke amount via the screw 17. When the elevating table 18 is lowered by a certain stroke amount, the motor of the self-propelled cart 12 is driven in the reverse direction to perform lining of the required lining portion of the pipe. That is, the forward rotation and reverse rotation of the self-propelled cart 12 and the lifting platform 1
By repeating the 8 intermittent lowering operations, the inner wall of the target object 2 within the stroke amount range of the lifting platform 12 can be automatically lined. Incidentally, the lining processing operation can also be controlled in sequence, and if the sequence control is used, as described above, the operator does not need to perform complicated operations on the operation panel.

Thus, when the downward stroke amount of the lifting platform 18 reaches its limit, the operator stops the driving operation of the lining material supply device 6 via the operation panel, and also drives the hanging rope winding device located on the ground to remove the hanging rope. 3, the automatic lining device 1 is positioned downward by a distance corresponding to the entire vertical stroke of the lifting table 18. Thereafter, the motor 16 is driven to move the lifting table 18 upward via the screw 17 and position it to the upper limit position of the stroke amount, so that the tip position of the lining nozzle 23 is adjusted before the automatic lining device 1 is lowered. Match the position of the previous lining process, and prepare for the next lining process. After this, as described above, the operator drives the lining material supply device 6 again via the operation panel to perform the lining process, and repeats this series of operations to automatically line the inner wall of the target object 2 from above to below. It can be done.

There are two ways to control the lining thickness. First, the lining thickness is determined from the distance between the lining nozzle 23 and the target object 2 and the type, amount, viscosity, pumping pressure, etc. of the lining material in the lining material supply device 6. In one case, a detector for detecting the lining thickness is provided near the lining nozzle 23, and the thickness is detected during the lining process, and this detection signal is fed back to the lining nozzle. This is done by variably controlling the distance to the target object, or variably controlling the pressure, amount, etc. of the lining material.

In the illustrated embodiment, the former example has been described, but it is of course possible to adopt the latter method. Therefore, the distance detector 26 provided near the tip of the lining nozzle 23 always keeps the distance between the lining nozzle and the target object constant during the lining process, and the detection signal of the distance detector 26 The motor 20 is controlled to move the arm 19 forward and backward. Further, the swinging function of the lining nozzle 23 provided in the nozzle head 22 acts to tilt the lining nozzle when there is a protrusion on the inner wall of the target object 2. That is, the driving operation and stopping of the lining material supply device 6,
Repeating the intermittent lowering operation of the lifting platform 18 of the nozzle head moving device and the forward and reverse traveling operations of the self-propelled trolley 12, and the intermittent lowering operation of the entire automatic lining device 1 by driving and stopping the hanging rope winding device, The operator on the ground can perform the intermittent movement of the lifting platform 18 up to the upper limit stroke position while viewing the image on the cathode ray tube in the operation panel located on the ground, and by operating the operation panel, the target object 2 can be moved without the operator directly approaching the surface to be lined. The lining process for the required lining parts can be performed automatically.

In the above embodiment, the case where the lining process is performed from above to below the target object was explained, but by reversing the layout of the automatic lining device 1 shown in FIG. Needless to say, lining treatment can be performed in an upward direction. In addition, by replacing the lining nozzle 23, lining material supply device 6, and hoses shown in Fig. 2 with an ultra-high pressure water injection nozzle and an ultra-high pressure generator, stone cutting of the installed lining material for maintenance of the existing target object is possible. The work can be done in the same way.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .

[Brief explanation of drawings]

Fig. 1 is a partial vertical cross-sectional view showing the state of lining a chimney using the lining device for chimneys, etc. according to the present invention, Fig. 2 is a longitudinal cross-sectional view showing an embodiment of the lining device, and Fig. 3 is a plan view thereof. It is a diagram. 1... Automatic lining device, 8... Cables and hoses, 10... Circular girder, 12... Self-propelled trolley, 18... Lifting platform, 19... Arm, 23
...Lining nozzle.

Claims (1)

[Claims] 1. A circular girder installed inside a chimney, etc. so that it can move up and down, a self-propelled trolley mounted on the girder so that it can move freely in the circumferential direction, and a self-propelled trolley mounted on the girder that can move up and down and in the front-rear direction. A lining device for a chimney, etc., comprising a freely mounted lining material injection device for the inner peripheral surface of the chimney, etc., and a lining material supply device for the injection device.