JPH0133716Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a gondola used for lining work on the inner surface of a chimney.

BACKGROUND ART Wheel-type gondolas and guidewire-type gondolas are widely known as gondolas used when performing work inside a chimney, such as lining the inner surface of a chimney. The above-mentioned wheel-type gondola has guide wheels on the side of the cage suspended by a lifting wire, and the wheels are activated when the cage shakes or when suspended in a sloping chimney. It guides the cage by contacting the inner surface of the chimney. Further, in the guide wire type gondola, a guide wire is installed vertically inside the chimney separately from the lifting wire for suspending the gondola, and the gondola is guided by the guide wire.

By the way, the lining materials used for the inside of chimneys are replacing conventional castables, firebrick, etc. with FRP (glass fiber reinforced plastic), rubber, etc., but these new lining materials are chemically Although they are stable, many of them are physically weak, and special care must be taken to protect the lining material during lining construction.

However, when carrying out work such as lining work inside a chimney using each of the above-mentioned gondolas, the following problems have arisen. First, in wheel-type gondolas, the wheels contact the lining material on the inner circumferential surface of the chimney, so when the contact pressure of the wheels increases,
This has caused problems such as damage to the lining surface. In addition, in guide wire type gondolas, the guide wire prevents the gondola from swinging, but it is necessary to pull the guide wire vertically with a large tension. In this case, a problem occurred in that the lifting wire could not fully support the cage and the lining material of the cage was damaged by coming into contact with it.

The present invention was developed in view of the above circumstances, and it prevents damage to the lining material by providing the gondola cage with an air pallet that blows air against the inner surface of the chimney to prevent the cage from coming into contact with the inner surface of the chimney. The purpose of the present invention is to provide a gondola that can perform work inside chimneys such as lining work and shaft work without having to worry.

The present invention will be described below based on embodiments shown in the drawings.

FIGS. 1 and 2 show an embodiment of the present invention, and numeral 1 in the figures shows a gondola cage having a handrail 1b erected on the outer periphery of the upper surface of an annular working floor 1a. There are three hoisting machines 2 on the top of the handstand 1.
are attached at 120° intervals in the circumferential direction of the work floor 1a, and by supporting the hanging ropes connected to these hoisting machines 2 on support machines installed at the top of the chimney or the top of the shaft, A gondola cage 1 is suspended in a chimney or a shaft, and the gondola cage 1 can be raised or lowered by winding up or letting out hanging ropes using the hoisting machines 2.

Four feeding devices 3 are attached to the outer periphery of the lower surface of the working floor 1a of the gondola cage 1 at intervals of 90 degrees in the circumferential direction of the working floor 1a.
The feeding portions 3a are directed outward in the radial direction of the work floor 1a, and air pallets 4 are attached to the tips of the feeding portions 3a so as to be rotatable vertically and horizontally, so that the direction of the air pallets can be adjusted. It's summery. Further, the work floor 1a is equipped with a blower 6 that communicates with each of the air pallets 4 through an operating valve (electromagnetic valve) 5, and this blower 6 sends air to each air pallet 4, and from each air pallet 4 to the work floor. Air can be injected radially outward of la. Note that 7 shown in FIG. 2 is a handle provided protruding from the upper surface of the working floor 1a for operating the feeding device 3,
By turning each handle 7, the feeding portion 3a can be moved (expanded and contracted) within a predetermined range in the radial direction of the work floor 1a. Furthermore, each of the above-mentioned feeding devices 3
Below, there is a detector main body 8a and a detector main body 8a.
A gap detector 8 consisting of a detection rod 8b inserted into the gap detector 8 is attached with the detection rod 8b facing outward in the radial direction of the work floor 1a. The detection rod 8b is inserted into the detector main body 8a so as to be able to move in and out, with its tip pushed slightly outward from the air pallet 4, and the gondola cage 1 is inserted into the chimney as shown in Fig. 2. When suspended as shown, when the air pallet 4 approaches the inner circumferential wall 10 of the chimney, it comes into contact with the inner circumferential wall 10. Inside the detector main body 8a, a control device is provided which outputs a control signal depending on the degree of expansion and contraction of the detection rod 8b, and this control device is electrically connected to the operation valve 5, and As the detector body 8b enters the detector main body 8a, the operating valve 5 is adjusted more to increase the amount of air sent from the blower 6 to the air pallet 4. In addition,
This control device is adapted to adjust the operation valve 5 to stop blowing out air from the air pallet 4 when it extends a predetermined length from the detection rod 8b.

Next, the operation of the present invention configured as described above will be explained.

To perform lining work, painting work, repair work, etc. inside the chimney, first, the hanging rope of each hoisting machine 2 is supported by a support machine installed at the top of the chimney, and the gondola cage 1 is placed inside the chimney. As shown in FIG. 2, the blower 6 and the gap detector 8 are operated. In addition, when hanging the gondola cage 1, each delivery portion 3a should be retracted by each handle 7 so that the air pallet 4 does not touch the inner circumferential wall 10 of the chimney when the gondola cage 1 is placed inside the chimney. Make it.

As mentioned above, a worker gets on the work floor 1a of the gondola cage 1 suspended inside the chimney, operates each hoisting machine 2 to raise and lower the gondola cage 1 to the work place, and performs lining work, painting work, and repair work. etc.

During the above operations or while the gondola cage 1 is being raised and lowered, if the gondola cage 1 swings in a certain direction and the detection rod 8b touches the inner peripheral wall 10 of the chimney and enters the detector body 8a for a predetermined length. , the control device in the detector main body 8a opens the operation valve 5, injects air from the air pallet 4 above the detector rod 8b that has touched the inner circumferential wall 10, and moves the gondola cage 1 in the opposite direction to the above-mentioned direction. To prevent the gondola cage 1 from coming into contact with the inner peripheral surface of the chimney. Note that all of the detection rods 8b operate as described above,
To prevent the gondola cage 1 from coming into contact with the inner peripheral surface of the chimney. Therefore, the lining material on the inner surface of the chimney
Even if it is physically weak such as FRP or rubber,
The lining material is not damaged during the above operations. In addition, since the guide wire that was conventionally necessary to prevent the gondola cage from coming into contact with the chimney inner surface is not used, it is easy to attach and remove the gondola cage to the chimney, and it can be easily relocated.

The number of air pallets 4 provided on the side of the gondola cage 1 may be any number as long as it is three or more, and the blower 6 provided on the gondola cage 1 may be of a type with a separate power source or a type with a built-in engine. Either one is fine. Furthermore, the blower 6 may be installed in a location other than the gondola cage 1 (for example, on a support machine for suspending the gondola cage 1, etc.) and configured to send air from the blower 6 to the air pallet 4 via an air hose.
Each air pallet 4 may be provided with a dedicated blower. Furthermore, the gondola cage 1 can be used not only for the various operations in the chimney described above, but also for operations inside a shaft. Furthermore,
The present invention may be applied to a guide wire type gondola, and can also be used for work inside an inclined chimney.

As explained above, the present invention has an air pallet on the side of the gondola cage suspended inside the chimney or shaft that blows out positioning air toward the inner surface of the chimney or shaft in a radial manner surrounding the center of the gondola cage. The gondola cage is constructed by attaching multiple units and prevents the gondola cage from coming into contact with the inner surface of the chimney or shaft due to the air injected from the air pallet, so it is necessary to cover the inner surface of the chimney with a physically weak lining material. This provides an excellent effect in that the lining material will not be damaged during repair work or painting work inside a chimney covered with a physically weak lining material. In addition, since the guide wire, which was conventionally necessary to prevent the gondola cage from coming into contact with the inner surface of the chimney, is not used, it can be easily attached to and removed from the chimney, and can be easily relocated.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a plan view and FIG. 2 being a side view. 1...Gondola cage, 1a...Working floor, 4...
...Air pallet, 5...Operation valve, 6...Blower, 8...Gap detector, 8a...Detector body, 8
b...Detection rod, 10...Inner peripheral wall.

Claims (1)

[Scope of utility model registration request] A plurality of air pallets are installed around a gondola cage suspended inside a chimney or a shaft, with a predetermined interval between them, for ejecting position-adjusting air toward the inner surface of the chimney or the shaft. A gondola for chimney work and shaft work, which is characterized by the ability to