A chimney demolition device and method

Abstract

This invention provides a chimney demolition device and method, comprising: a hydraulic clamp, a hoisting mechanism, a pump station, a control device, and several image acquisition devices; the hoisting mechanism is connected to the hydraulic clamp; the outlet end of the pump station is connected to the oil inlet pipe of the hydraulic clamp, and the inlet end of the pump station is connected to the oil outlet pipe of the hydraulic clamp; at least one set of image acquisition devices is respectively installed at the top of the hydraulic clamp and the hoisting mechanism; the control device is connected to each set of image acquisition devices to receive the cutting images of the hydraulic clamp and the hoisting images of the hoisting mechanism sent by the image acquisition devices, and to adjust the acquisition direction of the image acquisition devices, thereby controlling the pump station to adjust the cutting action of the hydraulic clamp, and controlling the hoisting mechanism to adjust the cutting direction of the hydraulic clamp. The chimney demolition method provided by this invention reduces the adverse effects of high-altitude construction, reduces the uncertainty factors caused by personnel going up and down, and all equipment maintenance and operation are carried out on the ground, greatly saving construction time.

Description

Technical Field

[0001] This invention relates to the field of chimney demolition technology, and more specifically, to a chimney demolition device and method. Background Technology

[0002] Throughout the entire desulfurization retrofit project, the chimney remains an indispensable and crucial component. Through continuous innovation in construction techniques and advancements in desulfurization technology, the once-prevalent concrete chimneys have been gradually replaced by steel chimneys. Therefore, the demolition of old concrete chimneys has become an urgent issue. Existing chimney demolition methods mainly include the following:

[0003] (1) Manual demolition: Construction workers climb to the demolition location and determine the specific demolition method according to the size and dimensions of the demolition, as well as the existing tools and the form of the original structure. The conventional method is to demolish piece by piece and layer by layer by opening notches. (2) Demolition using straddle-mounted equipment: Within the demolition range, the equipment is fixed at the top and removed layer by layer and circle by layer by using hydraulic shears or chisels. (3) For locations with low height or open areas, demolition operations are carried out by blasting, hydraulic shearing, etc. However, for chimneys with high height and online production equipment within 5 meters of the surrounding area (such as a 120-meter-high chimney), blasting or knocking down is not advisable, and the safety risk of manual demolition is also high because the wind speed at the top of the chimney is greater than 8m / s. Summary of the Invention

[0004] In view of this, the present invention proposes a chimney demolition device and method, which aims to solve the problem that the existing technology cannot safely and efficiently demolish tall chimneys.

[0005] This invention proposes a chimney demolition device, comprising: hydraulic clamps, a hoisting mechanism, a pump station, a control device, and several image acquisition devices; wherein,

[0006] The hoisting mechanism is connected to the hydraulic clamp and is used to lift the hydraulic clamp to the top of the chimney wall to be demolished;

[0007] The outlet end of the pump station is connected to the oil inlet pipe of the hydraulic clamp, and the inlet end of the pump station is connected to the oil outlet pipe of the hydraulic clamp, so as to provide power to the hydraulic clamp.

[0008] At least one set of image acquisition devices is respectively provided at the top of the hydraulic clamp and the hoisting mechanism;

[0009] The control device is connected to each group of image acquisition devices to receive hydraulic clamp cutting images and hoisting images sent by the image acquisition devices and to adjust the acquisition direction of the image acquisition devices, thereby controlling the pump station to adjust the cutting action of the hydraulic clamp and controlling the hoisting mechanism to adjust the cutting direction of the hydraulic clamp.

[0010] Furthermore, in the aforementioned chimney dismantling device, the image acquisition device is a 360° rotating camera.

[0011] Furthermore, in the aforementioned chimney demolition device, the pump station is the hydraulic system of the excavator.

[0012] Furthermore, in the aforementioned chimney dismantling device, a protective shed is erected on one side of the slag outlet at the bottom of the chimney to be dismantled.

[0013] The chimney demolition device provided by this invention has a simple structure. It is assembled and connected with on-site hoisting equipment, pump station equipment and hydraulic shears. The demolition status of the ultra-tall chimney can be monitored from the ground, which is conducive to timely adjustment of the shearing action and shearing position of the hydraulic shears, avoiding the danger of working at heights and greatly saving the workload of workers.

[0014] The present invention also provides a method for dismantling a chimney, comprising the following steps:

[0015] Step 1: Fix the hydraulic clamps onto the hoisting mechanism, and install several image acquisition devices on the hoisting mechanism and the hydraulic clamps. After connecting the hydraulic clamps and the pump station, test run the hydraulic clamps.

[0016] Step 2: Lift the hydraulic shears to a preset position above the chimney wall to be demolished. By observing the video images of the hydraulic shears and the hoisting mechanism in each image acquisition device, after the hydraulic shears are stable, control the hydraulic shears to cut the chimney to be demolished in sections according to the preset height.

[0017] Step 3: After cutting the current section of the chimney to be demolished, control the hoisting mechanism to adjust the position of the hydraulic shears and cut the next section of the chimney to be demolished.

[0018] Furthermore, in the above-mentioned chimney demolition method, when the chimney section to be demolished is at a shearing height of 90-120m, a hydraulic shear with a shearing pressure of 18-20MPa is selected.

[0019] Furthermore, in the above-mentioned chimney demolition method, when the chimney section to be demolished is below 90m in height, a hydraulic shear with a shearing pressure of 30-40MPa is selected.

[0020] Furthermore, in the above-mentioned method for dismantling chimneys, in step 2, the hydraulic shears are controlled to cut the chimney to be dismantled clockwise or counterclockwise based on the image acquired by the image acquisition device.

[0021] Furthermore, the above-mentioned chimney demolition method also includes: step 4, using the original chimney air inlet as a slag discharge channel to dispose of the concrete debris that falls from the bottom during the chimney demolition process.

[0022] Furthermore, in the above-mentioned chimney dismantling method, the shearing operation and the slag removal operation cannot be carried out simultaneously.

[0023] The chimney demolition method of this invention allows for monitoring of the demolition status of ultra-tall chimneys from the ground, which facilitates timely adjustment of the hydraulic shearing action and position, reduces the adverse effects of high-altitude construction, reduces the uncertainty factors caused by personnel going up and down, and all equipment maintenance and operation are carried out on the ground, which greatly saves construction time. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0025] Figure 1 A partial schematic diagram of the chimney dismantling device provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic flowchart of a chimney dismantling method provided in an embodiment of the present invention. Detailed Implementation

[0027] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Device Example:

[0029] See Figure 1The chimney demolition device of this invention includes: a hydraulic clamp 1, a hoisting mechanism 2, a pump station (not shown in the figure), a control device (not shown in the figure), and several image acquisition devices (not shown in the figure); wherein, the hoisting mechanism 2 is connected to the hydraulic clamp 1 and is used to lift the hydraulic clamp 1 to the top of the wall of the chimney 3 to be demolished; the outlet end of the pump station is connected to the oil inlet pipe of the hydraulic clamp 1, and the inlet end of the pump station is connected to the oil outlet pipe of the hydraulic clamp 1, so as to provide power to the hydraulic clamp 1; at least one image acquisition device is respectively provided at the top of the hydraulic clamp 1 and the hoisting mechanism 2; the control device is connected to the image acquisition device and is used to receive the cutting image of the hydraulic clamp 1 and the hoisting image of the hoisting mechanism 2 sent by the image acquisition device and adjust the acquisition direction of the image acquisition device, thereby controlling the hoisting mechanism to adjust the cutting direction of the hydraulic clamp, and controlling the pump station to adjust the cutting action of the hydraulic clamp.

[0030] Specifically, the lifting mechanism 2 can be a truck crane, such as a 650-ton all-terrain crane. The image acquisition device can be a 360° rotating camera, which can effectively prevent exposed steel bars in the chimney after demolition from damaging the hydraulic shears 1. At the same time, the camera can be used to monitor the demolition process and the demolition location at any time, which facilitates the adjustment of the actions of the lifting mechanism 2 and the hydraulic shears 1 by the operators.

[0031] In this embodiment, two sets of image acquisition devices can be installed on the hydraulic clamp 1 and the hoisting mechanism 2 respectively. Each set of image acquisition devices can have two cameras.

[0032] In this embodiment, the control device and the image acquisition device are connected via wired communication, ensuring stable and reliable image transmission. The operator and crane driver jointly control the hydraulic shears 1's movement and shearing position through a camera, and can control the direction of concrete breaking, effectively avoiding safety risks to personnel moving up, down, left, and right. If the hydraulic shears or camera malfunctions, the crane boom can be lowered promptly for repair. The control device in this embodiment can be a tablet computer with a built-in image monitoring module.

[0033] The hoisting mechanism 2 maintains a preset safe distance from the chimney to be demolished. This safe distance refers to the horizontal distance between the hoisting mechanism 2 and the slag outlet 4 of the chimney to be demolished. This safe distance can be greater than or equal to 5m, for example, it can be 5-15m, for example, it can be 12m.

[0034] In this embodiment, the pump station is the hydraulic system of the excavator, which can provide sufficient pressure to the hydraulic clamp 1, and the hydraulic clamp 1 is powered directly by the equipment on the construction site, which is convenient, reliable and cost-effective.

[0035] Furthermore, in order to prevent debris from falling and injuring people below, in this embodiment, a protective shed 5 is erected on one side of the slag outlet at the bottom of the chimney to be demolished.

[0036] It is evident from the above that the chimney demolition device provided in this embodiment has a simple structure. It is assembled and connected with on-site hoisting equipment, pump station equipment and hydraulic shears. The demolition status of the ultra-tall chimney can be monitored from the ground, which is conducive to timely adjustment of the shearing action and shearing position of the hydraulic shears, avoids the danger of working at height, and greatly saves the workload of the workers.

[0037] Method Implementation Examples:

[0038] See Figure 2 The present invention also provides a method for dismantling a chimney, comprising the following steps:

[0039] Step S1: Fix the hydraulic clamp 1 on the hoisting mechanism 2, and install several image acquisition devices on the hoisting mechanism 2 and the hydraulic clamp 1. After connecting the hydraulic clamp 1 and the pump station, test run the hydraulic clamp 1.

[0040] Specifically, a camera is installed at the end of the boom of the hoisting mechanism 2, which is fixed with hydraulic clamps 1.

[0041] Step S2: Lift the hydraulic shears 1 to a preset position above the chimney wall to be demolished. By observing the video images of the hydraulic shears 1 and the hoisting mechanism 2 in each image acquisition device, after the hydraulic shears 1 is stable, control the hydraulic shears 1 to cut the chimney to be demolished in sections according to the preset height.

[0042] Specifically, the preset height can be determined according to the actual situation, for example, it can be cut in sections every 2 meters.

[0043] In practice, when the hydraulic clamp 1 is stable above the chimney to be demolished, the operator of the control device can notify the pump station operators to start the pump station to provide power to the hydraulic clamp 1, control the opening and closing of the hydraulic clamp 1, and realize the segmented shearing of the chimney to be demolished.

[0044] To save construction costs and achieve precise shearing of the chimney to be demolished, hydraulic shears with a shearing pressure of 18-20 MPa are used when shearing sections of the chimney to be demolished at a height of 90-120 m to avoid large pieces of concrete falling off. When shearing sections of the chimney to be demolished at a height of less than 90 m, hydraulic shears with a shearing pressure of 30-40 MPa are used.

[0045] To reduce the amount of falling debris outside the chimney, the hydraulic shears should be tilted as much as possible towards the inside of the chimney. In practice, based on the image captured by the image acquisition device, the hydraulic shears are controlled to cut the chimney to be demolished clockwise or counterclockwise.

[0046] Step S3: After the current section of the chimney to be demolished has been cut, the hoisting mechanism 2 is controlled to adjust the position of the hydraulic shears to cut the next section of the chimney to be demolished.

[0047] Specifically, once the operator detects that the hydraulic shears have cut off a section of the chimney according to the control device, they can notify the operator of hoisting mechanism 2 to adjust the position of the hydraulic shears to cut the next section of the chimney.

[0048] In this embodiment, it may also include: step 4, using the existing chimney air inlet as a slag discharge channel to dismantle the concrete debris that falls from the bottom during the chimney demolition process.

[0049] In practice, to ensure operational safety, shearing and slag removal operations cannot be carried out simultaneously.

[0050] The relevant parts of the method embodiments and the above-described device embodiments can be referred to each other, and will not be repeated here.

[0051] In summary, the chimney demolition method of this invention allows for monitoring of the demolition status of ultra-tall chimneys from the ground, which facilitates timely adjustment of the hydraulic shears' cutting action and position, reduces the adverse effects of high-altitude construction, minimizes the uncertainties associated with personnel moving up and down, and ensures that all equipment maintenance and operation are carried out on the ground, thus significantly saving construction time.

[0052] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A chimney demolition device, characterized in that, The hydraulic tongs, the hoisting mechanism, the pump station, the control device and a plurality of image acquisition devices are included. The hoisting mechanism is connected with the hydraulic tongs, and is used for hoisting the hydraulic tongs to above the cylinder wall of the chimney to be removed. The outlet end of the pump station is connected with the oil inlet pipe of the hydraulic tongs, and the inlet end of the pump station is connected with the oil outlet pipe of the hydraulic tongs. The pump station is the hydraulic system of the excavator. The top end of the hydraulic tongs and the hoisting mechanism is respectively provided with at least one group of image acquisition devices. The image acquisition device is a 360° rotating camera. The control device is connected with each group of image acquisition devices, receives the shearing images of the hydraulic tongs and the hoisting images of the hoisting mechanism sent by the image acquisition devices, adjusts the collection direction of the image acquisition devices, controls the hoisting mechanism to adjust the shearing direction of the hydraulic tongs, and controls the pump station to adjust the hydraulic tongs to segmentally shear the chimney to be removed at a preset height. The bottom of the chimney to be removed is provided with a protective shed on one side of the slag outlet. The hydraulic tongs are selected to have a shearing pressure of 18-20 MPa when the shearing height is 90-120 m, and the hydraulic tongs are selected to have a shearing pressure of 30-40 MPa when the shearing height is below 90 m. The steps include:

2. A method of demolishing a chimney using the chimney demolition device according to claim 1, characterized in that, Step 1, fixing the hydraulic tongs on the hoisting mechanism, installing a plurality of image acquisition devices on the hoisting mechanism and the hydraulic tongs, connecting the hydraulic tongs and the pump station, and then performing a trial operation on the hydraulic tongs; Step 2, hoisting the hydraulic tongs to a preset position above the cylinder wall of the chimney to be removed, observing the video images of the hydraulic tongs and the hoisting mechanism in each image acquisition device, controlling the hydraulic tongs to segmentally shear the chimney to be removed at a preset height after the hydraulic tongs are stable, selecting the hydraulic tongs to have a shearing pressure of 18-20 MPa when the chimney to be removed is at a shearing height of 90-120 m, and selecting the hydraulic tongs to have a shearing pressure of 30-40 MPa when the chimney to be removed is at a shearing height below 90 m; Step 3, after the chimney to be removed at the current height is sheared, controlling the hoisting mechanism to adjust the position of the hydraulic tongs, and shearing the chimney to be removed at the next height. In step 2, the hydraulic tongs are controlled to shear the chimney to be removed clockwise or counterclockwise according to the head image obtained by the image acquisition device.

3. The method of claim 2, wherein, Step 4, the concrete debris falling from the bottom during the removal of the chimney is taken out through the original chimney air inlet as a slag outlet channel.

4. The method of claim 2, wherein, The shearing operation and the slagging operation cannot be performed simultaneously. ​ 5. The method of claim 4, wherein, ​

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