JP7393272B2 - Chimney brick demolition machine - Google Patents

Description

The present invention relates to a chimney brick dismantling machine for dismantling bricks in a chimney.

In recent years, incineration facilities such as garbage incinerators have been frequently dismantled due to aging and other reasons. Such incineration facilities are equipped with concrete chimneys, but since the inside becomes extremely hot, a gap is created between the inner cylinder made of firebrick and the outer cylinder made of concrete to prevent an air gap. It forms a heat insulating effect.

When dismantling such a chimney, it is necessary to separate firebricks and concrete in order to reuse the materials after dismantling. Since it is difficult for workers to dismantle only the refractory bricks that make up the inner cylinder in the narrow interior of a chimney, a demolition machine is inserted into the chimney and a worker located outside the chimney remotely controls the demolition. It is preferable to do so.

Therefore, for example, Patent Document 1 discloses a method for dismantling fireproof bricks, in which a telescopic rod-like member is extended to cause wedge portions to bite into the joints of the firebricks, and the firebricks are dismantled in steps by being pulled upwards. .

Furthermore, in Patent Document 2, with the wedge frame provided on the lower body expanded so that the wedge portion at the tip thereof is inserted into the gap between the inner cylinder and the outer cylinder, the tooth arm also provided on the lower body is opened, and the wedge frame is opened. A chimney demolition machine is disclosed in which the tooth at the tip is brought into contact with a refractory brick, and the impact causes the joints of the refractory brick to break.

Japanese Patent Application Publication No. 2008-224063 Japanese Patent Application Publication No. 2005-265338

However, in the refractory brick dismantling method disclosed in Patent Document 1, even if the telescopic rod-like member is stretched and the wedge portions bite into the joints of the refractory brick, the wedge portions are not sufficiently penetrated, and the retractable rod-like member is forced upward. There was a problem in that the refractory bricks were sometimes not dismantled even if they were pulled up, resulting in poor dismantling efficiency.

In addition, in the chimney demolition machine disclosed in Patent Document 2, the wedge portion at the tip of the wedge frame is first inserted into the gap between the inner cylinder and the outer cylinder, and then the tooth arm is opened and the tooth bites into the joint. It is difficult to do so. Therefore, there was a problem that the disassembly efficiency was poor.

In view of the above points, an object of the present invention is to provide a chimney brick dismantling machine that can improve dismantling efficiency.

The chimney brick dismantling machine of the present invention is a dismantling machine for dismantling the inner cylinder of a chimney, which consists of an inner cylinder made of stacked bricks and an outer cylinder made of concrete with a gap formed between the inner cylinder and the outer cylinder. a main body that is suspended in the chimney by a lifting machine; a plurality of arm bodies that are vertically rotatably provided on the main body and have teeth at their tips; an outer part of the main body and each of the arms; a plurality of hydraulic cylinders each provided between the body and the body for vertically rotating each of the arm bodies with respect to the body; and a hydraulic pressure supply means provided in the body for supplying hydraulic pressure to the plurality of hydraulic cylinders. and an oil storage means that is provided in the main body and stores oil supplied by the hydraulic pressure supply means.

According to the chimney brick dismantling machine of the present invention, each of the plurality of arm bodies can be vertically rotated independently with respect to the main body by means of a hydraulic cylinder. It is now possible to lift the brick with the teeth inserted into the joints of the brick. This makes it possible to improve the disassembly efficiency of the inner cylinder compared to the techniques disclosed in Patent Documents 1 and 2 above.

In addition, since the hydraulic pressure supply means and oil storage means are provided in the main body, there is no need to supply hydraulic pressure to the hydraulic cylinder from the ground, etc., so it is possible to shorten the hydraulic hose and reduce pressure loss. .

In the chimney brick dismantling machine of the present invention, it is preferable that the number of arm bodies is at least three and that they are arranged symmetrically with respect to the center of the main body in plan view.

In this case, it becomes possible to lift the teeth of each arm body and drop the bricks equally. Furthermore, compared to the case where there are two arm bodies, it is possible to reduce the work such as rotating the chimney brick dismantling machine inside the chimney in order to change the position of the bricks to be dropped.

Further, in the chimney brick dismantling machine of the present invention, it is preferable that the plurality of hydraulic cylinders rotate at least one arm body and another arm body of the plurality of arm bodies non-simultaneously. .

In this case, by rotating only one group of arms out of a plurality of arms with different arm lengths, tooth attachment angles, etc., the bricks can be dropped appropriately by the arms of that group. By doing so, it becomes possible to suitably dismantle the inner cylinder portion. Note that all the arm bodies may be rotated at the same time.

Further, in the chimney brick dismantling machine of the present invention, the arm body is configured such that a base part provided on the main body so as to be freely rotatable in the vertical direction and an arm main body part having the tooth at the tip are detachably connected. It is preferable that

In this case, by replacing arm bodies with different arm body lengths, tooth attachment angles, etc., bricks can be dropped more favorably by the replaced arm body parts, further improving demolition efficiency. becomes possible.

In the chimney brick dismantling machine of the present invention, a plurality of first protective covers are provided on the main body and cover the outside of each of the hydraulic cylinders, and a plurality of first protective covers are provided on the arm body and cover the outside of each of the hydraulic cylinders. Preferably, the device further includes a plurality of second protective covers that cover both sides, respectively.

In this case, the first and second protective covers can protect the hydraulic cylinder from falling bricks, dust, and the like.

Further, in the chimney brick dismantling machine of the present invention, each of the teeth has a tip inclined diagonally upward and outward with respect to a line connecting the center of rotation of the arm body and the base end of the tooth. Preferably.

In this case, even if the inner diameter of the inner cylinder changes, the teeth will bite into the joints of the bricks, making it possible to further lift the bricks. Specifically, for example, the tip of each of the teeth faces diagonally upward and outward by 30 degrees to 45 degrees with respect to a line connecting the center of rotation of the arm body and the proximal end of the tooth. is preferably inclined.

Furthermore, the chimney brick dismantling machine of the present invention preferably further includes: illumination means provided on the main body to illuminate the inside of the chimney; and imaging means provided on the main body to take an image of the inside of the chimney.

In this case, by using the illumination means and the imaging means, a worker located away from the chimney brick dismantling machine can operate the chimney brick dismantling machine while being aware of the conditions inside the chimney.

FIG. 1 is a schematic sectional view showing a chimney brick dismantling machine according to an embodiment of the present invention inserted into a chimney. A schematic side view showing a chimney brick dismantling machine.

A chimney brick demolition machine 100 (hereinafter also simply referred to as demolition machine 100) according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. Note that FIGS. 1 and 2 are diagrams for schematically explaining this embodiment, and the dimensions are deformed.

The demolition machine 100 is used to dismantle a chimney D that is composed of an inner cylinder A made of stacked firebricks and an outer cylinder C made of concrete with a gap B opened between the inner cylinder A and the outer cylinder C. The demolition machine 100 is suspended by a lifting machine E installed on the ground outside the chimney D, and the work of dismantling only the inner cylinder A while inserted inside the chimney D is the work located outside the chimney D. This is performed by remote control using an operating device F operated by a person (not shown).

The demolition machine 100 includes a main body 10 suspended by a lifting machine E, a plurality of arm bodies 20 provided on the main body 10 so as to be vertically rotatable, and a plurality of arm bodies 20 provided between the main body 10 and each arm body 20. It is provided with a plurality of hydraulic cylinders 30 and the like that rotate each arm body 20 up and down relative to each other.

The main body 10 is a casing made of a metal component, and a suspended portion 11 for hanging by a lifting machine E is provided at the upper part. A hydraulic unit 12 for operating the hydraulic cylinder 30 is built inside the casing of the main body 10.

The hydraulic unit 12 includes, for example, a hydraulic pump 41 that supplies oil to the hydraulic cylinder 30 , an oil tank 42 that stores the oil supplied by the hydraulic pump 41 , and a tank that stores oil supplied from the hydraulic pump 41 to the hydraulic cylinder 30 . This is a well-known configuration that includes a directional control valve 43 that controls whether the water is supplied to the port. Since the hydraulic unit 12 is built into the main body 10 in this way, there is no need to supply hydraulic pressure from the ground, so it is possible to shorten the hydraulic hose and reduce pressure loss. Note that the hydraulic pump 41 corresponds to the hydraulic pressure supply means of the present invention, and the oil tank 42 corresponds to the oil storage means of the present invention.

Further, the main body 10 is provided with an illumination means 13 such as a light and an imaging means 14 such as a video camera in order for the worker to recognize the area where the bricks are being dismantled, that is, below and outside the main body 10.

Furthermore, although not shown, the main body 10 includes power lines for supplying power from an external power source to the hydraulic pump 41, the direction control valve 43, the illumination means 13, the imaging means 14, etc., and signal lines for controlling these. is also built-in. Although not shown, if the external power source is installed on the ground outside the chimney D, the power line extends to the ground. Further, the signal line extends to the operating device F.

It is preferable that at least three or more arm bodies 20 are provided, and that they are arranged symmetrically (equally) with respect to the center of the main body 10 in plan view (top view). Here, six arm bodies 20 are provided, and those having the same height and the same length are provided at the lower part of the main body 10. Note that in FIGS. 1 and 2, only two arm bodies 20 are shown.

The base end of each arm body 20 is rotatably attached to the outer lower part of the main body 10 . Each arm body 20 is rotatably connected to the tip of the rod 31 of the hydraulic cylinder 30 on the outside of the intermediate portion of the base 21 . Each arm body 20 further includes a main body portion 22 extending downward from the base portion 21 . Such a configuration allows the arm body 20 to have a wide movable range.

A tooth 23 is attached to the tip of the main body portion 22. The tooth 23 is a wedge-shaped hard member made of metal or the like with a sharp tip. Here, the tooth 23 is fixed to the tip of the main body 22 by welding or the like, but it is not formed integrally with the main body 22. It's okay.

The tip of the tooth 23 is inclined diagonally upward and outward with respect to a line L connecting the rotation center O of the arm body 20 and the base end M of the tooth 23. Specifically, it is preferable that the direction in which the tip is directed is inclined obliquely upward and outward by 30 degrees to 45 degrees with respect to the line L.

Note that the main body portion 22 is detachably connected to the base portion 21 using bolts or the like. By replacing the main body part 22, the length and shape of the arm body 20, the mounting angle and length of the tooth 23, etc. can be adjusted according to the inner diameter and depth of the inner cylinder A, the shape and stacking state of the firebricks, etc. It becomes possible to make the difference.

The hydraulic cylinder 30 is provided between the outer upper part of the main body 10 and the base end of the base 21 of the arm body 20, and is configured to rotate the arm body 20 in the vertical direction with respect to the main body 10. The upper part of each hydraulic cylinder 30 is rotatably attached to the upper part of the main body 10. Each hydraulic cylinder 30 can be independently controlled by the hydraulic unit 12.

When the rod 31 of the hydraulic cylinder 30 is extended, the arm body 20 rotates downward and enters a closed state, as shown by the solid line in FIG. On the other hand, when the rod 31 of the hydraulic cylinder 30 is contracted, the arm body 20 rotates upward and expands outward from the main body 10, as shown by the two-dot chain line in FIG. In this manner, by the expansion and contraction of the rod 31 of the hydraulic cylinder 30, the arm body 20 operates to open and close between the downward direction of the main body 10 and the horizontal direction outward of the main body 10.

Each hydraulic cylinder 30 is covered on the outside with a first protective cover 32 whose lower end is attached to the outer lower part of the main body 10, and the tip of the rod 31 of the base 21 of the arm body 20 is covered with a first protective cover 32. The lower end portion is covered by a second protective cover 33 attached near the attachment portion. The first and second protective covers 32 and 33 are designed to protect the hydraulic cylinder 30 from falling firebricks, dust, and the like.

Hereinafter, a method of dismantling the inner cylinder A of the chimney D using the dismantling machine 100 will be explained. Note that each step in this method is performed by an operator who operates the lifting machine E and the operating device F.

First, the demolition machine 100 is suspended by the lifting machine E, and the demolition machine 100 is inserted into the chimney D. At this time, all the arm bodies 20 are in a closed state. Then, the demolition machine 100 is lowered to an appropriate height by the lifting machine E, so that the center of the demolition machine 100 coincides with the center of the chimney D in plan view. However, it is not necessary to match the centers completely.

In this state, all the arm bodies 20 are spread out at the same time, and the teeth 23 at the tips of each arm body 20 bite into the joints between the firebricks. However, it is not necessary to make all the teeth 23 bite into the joints. Then, all the arm bodies 20 are further expanded or the demolition machine 100 is raised, and the refractory bricks are lifted upward by the teeth 23 biting into the joints. This causes the lifted firebricks and the firebricks stacked above to fall.

After that, all the arm bodies 20 are closed, and the dismantling machine 100 is further moved downward. Then, the operation of expanding the arm body 20 and dropping the firebrick is repeated.

In addition, since the inner diameter of the inner cylinder A is generally larger toward the lower part of the chimney D, the extent to which the arm body 20 is expanded when the teeth 23 bite into the joint becomes larger. Therefore, in the demolition machine 100, the extendable range of the rod 31 of the hydraulic cylinder 30 is set so that the teeth 23 can bite into the joints regardless of the size of the inner diameter of the inner cylinder A, and furthermore, the refractory brick can be lifted. ing.

Furthermore, since the tips of the teeth 23 are inclined in the aforementioned direction, even if the inner diameter of the inner tube A changes, the teeth 23 can bite into the joints and further lift the refractory brick. . Furthermore, depending on the inner diameter of the inner cylinder A, the base 21 of the arm body 20 may be replaced with one having a different arm length or a different angle at the tip of the teeth 23.

In addition, in the demolition machine 100, the six arm bodies 20 are arranged symmetrically with respect to the center of the main body 10 in a plan view, so that the operations of lifting the teeth 23 of each arm body 20 and dropping the refractory bricks are performed equally. can be done. Furthermore, when there are two arm bodies 20, the position of the refractory brick that can be dropped is limited, so operations such as rotating the demolition machine 100 within the chimney D are required. In this case, no such operation is required.

Note that the present invention is not limited to the above-described dismantling machine 100, and can be modified as appropriate. For example, in the demolition machine 100, all the arm bodies 20 have the same arm length, are attached to the main body 10 at the same height, and are opened and closed at the same time, but the invention is not limited thereto.

For example, if the arm body 20 has two types of arm lengths, long and short, disassembly work is performed by opening and closing only the arm body 20 with the short arm length at a location where the inner diameter of the inner cylinder A is small, and when the inner diameter of the inner cylinder A is large. At some locations, disassembly work may be performed by opening and closing only the arm body 20 having a long arm length.

In addition, in accordance with the change in the height of the inner diameter of the inner cylinder A, the arm body 20 with a shorter arm length is positioned above the arm body 20 with a longer arm length, and these arm bodies 20 are opened at the same time. Accordingly, the bricks may be dismantled at different positions above and below.

Further, while the arm body 20 whose teeth have bitten into the joint is stopped, only the arm body whose teeth are not yet in contact with the inner surface of the inner cylinder A may be further expanded. In this case, even if the dismantling machine 100 is not located at the center of the inner cylinder A, the dismantling work can be performed satisfactorily.

DESCRIPTION OF SYMBOLS 10... Main body, 11... Suspended part, 12... Hydraulic unit, 13... Illuminating means, 14... Imaging means, 20... Arm body, 21... Base, 22... Main body part, 23... Teeth, 30... Hydraulic cylinder, 31 ...Rod, 32...First protective cover, 33...Second protective cover, 41...Hydraulic pump (hydraulic supply means), 42...Oil tank (oil storage means), 43...Directional control valve, 100...Brick in chimney Demolition machine, A...Inner cylinder, B...Gap, C...Outer cylinder, D...Chimney, E...Lifting machine, F...Operation device.

Claims (7)

A demolition machine for dismantling the inner cylinder of a chimney consisting of an inner cylinder made of stacked bricks and an outer cylinder formed from concrete with a gap between the inner cylinder,
a main body suspended within the chimney by a lifting machine;
a plurality of arm bodies that are provided on the main body so as to be freely rotatable in the vertical direction and have teeth at their tips;
a plurality of hydraulic cylinders that are respectively provided between an outer portion of the main body and each of the arm bodies and rotate each of the arm bodies in the vertical direction with respect to the main body;
a hydraulic pressure supply means provided in the main body and supplying hydraulic pressure to the plurality of hydraulic cylinders;
an oil storage means provided in the main body and storing oil supplied by the hydraulic pressure supply means ,
Each of the plurality of hydraulic cylinders for vertically rotating each of the arm bodies with respect to the main body is independently controlled by a hydraulic unit including the hydraulic pressure supply means, and at least one of the plurality of arm bodies is controlled independently by a hydraulic unit including the hydraulic pressure supply means. A chimney brick dismantling machine characterized by rotating a book arm body and another arm body non-simultaneously . The chimney brick dismantling machine according to claim 1, wherein the number of arm bodies is at least three, and the arm bodies are arranged symmetrically with respect to the center of the main body in plan view. 3. The arm body according to claim 1 , wherein the arm body is configured by detachably connecting a base part provided on the main body so as to be freely rotatable in the vertical direction and an arm body part having the teeth at the tips thereof. The listed chimney brick demolition machine. a plurality of first protective covers provided on the main body and covering the outside of each of the hydraulic cylinders;
The brick disassembly in a chimney according to any one of claims 1 to 3 , further comprising a plurality of second protective covers provided on the arm body and covering the outside of each of the hydraulic cylinders. Machine. Claims 1 to 4, wherein each of the teeth has a tip inclined diagonally upward and outward with respect to a line connecting the rotation center of the arm body and the proximal end of the tooth. The chimney brick dismantling machine according to any one of paragraphs 1 to 9. The tip of each tooth is inclined diagonally upward and outward by 30 degrees to 45 degrees with respect to a line connecting the rotation center of the arm body and the proximal end of the tooth. The chimney brick dismantling machine according to claim 5 . lighting means provided in the main body and illuminating the inside of the chimney;
The brick dismantling machine in a chimney according to any one of claims 1 to 6 , further comprising an imaging means provided in the main body to take an image of the inside of the chimney.

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