Green building construction monitoring device

Abstract

The application relates to the technical field of construction monitoring, in particular to a green building construction monitoring device, which comprises a shell, an installation bin is arranged in the shell, a through hole for installing a working steel wire rope is arranged on the shell and communicates with the installation bin, two detection sliding sleeves which are mutually matched with the working steel wire rope and the installation bin are arranged in the installation bin in the vertical direction, a piezoelectric sheet is arranged between the two detection sliding sleeves, the piezoelectric sheet is electrically connected with a high-altitude hanging basket, a boss is arranged around the through hole of the detection sliding sleeve, the boss is annular and is matched with the working steel wire rope. When the boss rubs against the surface of the steel wire rope, the burrs generated by the broken wire of the steel wire rope generate resistance to the detection sliding sleeve, and finally act on the piezoelectric sheet, the piezoelectric sheet sends out an electric signal, the hanging basket stops moving under the control of a single-chip microcomputer, and an alarm is given to the workers, so that the working steel wire rope of the high-altitude hanging basket is detected.

Description

Technical Field

[0001] This invention relates to the field of construction monitoring technology, specifically to a green building construction monitoring device. Background Technology

[0002] Green buildings refer to high-quality buildings that, throughout their entire lifespan, conserve resources, protect the environment, reduce pollution, provide people with healthy, suitable, and efficient living spaces, and maximize the harmonious coexistence of humans and nature.

[0003] Externally ventilated double-layer curtain wall structures, as a typical example of green building structures, can utilize the chimney effect by rationally setting the air inlets and outlets of the double-layer curtain wall. This allows the building to form ventilation exchange conditions with nature without using external energy, thereby reducing the internal temperature of the building. For this type of curtain wall structure, the greater the height difference between the air inlets and outlets, the more obvious the chimney effect, which means better ventilation. Therefore, considering energy conservation, high-rise buildings often prefer to use double-layer curtain walls. However, this also means that the construction of the curtain wall structure requires high-risk high-altitude operations.

[0004] Nowadays, the high-altitude construction and installation of curtain walls usually requires the cooperation of two groups of workers. The two groups of workers work inside and outside the building, respectively. The workers working outside the building need to work in a suspended scaffold at high altitude.

[0005] Existing suspended platforms are typically suspended in the air by only two working steel wire ropes. These ropes are susceptible to wear, corrosion, and other factors during use, which can lead to broken wires. This can cause localized stress concentration in the ropes, significantly increasing the risk of breakage during the traction of the suspended platform. Therefore, safety regulations at construction sites require regular manual inspections of the working steel wire ropes. However, initially, wire rope breaks usually involve only a single broken wire, with a small and easily missed defect. For example, in an 8.3mm steel wire rope, the diameter of a single wire is only about 1mm. Visual inspection of a single broken wire is difficult, and the randomness of manual inspection means that even minor defects can easily be missed if workers are not paying attention.

[0006] To address this, a green building construction monitoring device is proposed to monitor the working wire rope during the operation of the suspended platform. When a wire breaks in the working wire rope during the operation of the suspended platform, the device will prompt the staff to replace the working wire rope. Summary of the Invention

[0007] The purpose of this invention is to provide a green building construction monitoring device. When a broken wire appears in the working steel wire rope, the present invention, when brushing across the surface of the steel wire rope, causes the burr to generate resistance against the detection sleeve, which ultimately acts on the piezoelectric element. The piezoelectric element then emits an electrical signal. Under the control of a microcontroller, the suspended platform stops moving and an alarm is triggered to the workers, thus solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A green building construction monitoring device, comprising:

[0010] The outer casing has an installation compartment inside. The outer casing has a through hole for installing the working wire rope, and the through hole is connected to the installation compartment. The installation compartment has two detection sleeves installed in the vertical direction, which cooperate with the working wire rope and the installation compartment. A piezoelectric plate is provided between the two detection sleeves, and the piezoelectric plate is electrically connected to the high-altitude suspended platform.

[0011] A boss is installed around the through hole of the detection sleeve. The boss is annular and cooperates with the working wire rope.

[0012] The boss has a groove on its outer periphery.

[0013] The groove gradually narrows from top to bottom.

[0014] When using this invention, each working steel wire rope needs to be equipped with one of the devices of this invention. Its basic principle is as follows:

[0015] Based on this technical solution, the wire rope is inserted into the housing through the through hole. At the same time, the working wire rope is inserted into the two detection sleeves. At this time, the protrusion on the detection sleeve just lightly touches the outer surface of the working wire rope. Then the invention is fixed to the basket. So when the basket rises or falls, the protrusion can continuously brush against the surface of the working wire rope. If the wire rope is intact, the boss can smoothly pass over its surface. However, if a wire is broken, the tensile stress at the break point disappears, causing the end of that wire to contract and deform, protruding from the rope's surface to form a burr. When the device passes over the wire rope, the boss inserts into the gap between the burr and the rope body. This burr creates resistance to the sliding of the detection sleeve. Since the device is fixed to the suspended platform, this resistance is transmitted to the piezoelectric element, which sends an electrical signal. Controlled by the microcontroller, the motor on the suspended platform stops, thus stopping the platform. Furthermore, each of the two devices installed on the two working wire ropes can be equipped with an indicator light. When one piezoelectric element is triggered, its corresponding indicator light illuminates, alerting the worker and indicating the location of the broken wire rope.

[0016] In this technical solution, under ideal conditions, even without setting a boss on the detection sleeve, the burr should be able to trigger the piezoelectric sheet by directly squeezing the upper surface of the detection sleeve, thereby enabling the invention to function. Therefore, it is necessary to emphasize the role of setting the boss to highlight its significance.

[0017] Specifically, the boss makes it easier for the device of this invention to detect burrs on the wire rope caused by broken wires. This is because, although burrs deform due to their own elasticity, creating gaps between them and the wire rope, the high rigidity of the wire limits its deformation. Specifically, the outward warping of burrs caused by broken wires is very limited. This means that if the outward warping is slight, the burr may be directly squeezed into the gap between the detection sleeve and the wire rope under pressure, failing to exert direct vertical pressure on the detection sleeve. Instead, the friction between the burr and the detection sleeve applies a vertical force, potentially preventing the burr from generating sufficient vertical resistance to trigger the piezoelectric element. Clearly, in this case, the invention cannot function properly. Therefore, a boss was designed so that it could be inserted into the gap between the burr and the wire rope. This prevents the burr from being squeezed directly into the mating gap between the detection sleeve and the wire rope when the warping is slight. Instead, the burr must generate direct resistance with the detection sleeve to ensure the triggering of the piezoelectric element.

[0018] It should be added that, in order to achieve this function, the cross-section of the boss should be triangular. Specifically, taking a boss with a right-angled triangle cross-section as an example, one right-angled side of the triangle should be parallel to the axis of the working wire rope. As for the boss itself, in order to ensure that it can be smoothly inserted into the gap, the angle corresponding to the upper vertex of the cross-section triangle should be as small as possible. Considering the strength of the material, the boss can be made of metal to ensure its strength. Therefore, the angle corresponding to the upper vertex of the boss can be smaller.

[0019] Furthermore, by setting the boss, the wear of the detection sleeve caused by friction between the inner wall of the detection sleeve and the working wire rope can be reduced, thus improving the service life of the equipment. This is because the burr detection work is concentrated on the boss on the detection sleeve, making the tightness requirement only between the boss and the wire rope. Therefore, the tightness between the detection sleeve and the working wire rope can be appropriately larger to reduce wear. Admittedly, this approach will result in wear mainly occurring on the boss. As mentioned above, the wear of the boss is directly related to the working effect of the invention; therefore, it is necessary to ensure that the boss has a certain degree of wear resistance. Based on this consideration, the boss should be made of metal and subjected to appropriate heat treatment to give it good wear resistance. Alternatively, chrome plating, cold work hardening, or other methods can be used. More preferably, considering that the boss is a wear-prone part, the boss and the detection sleeve can be designed as separate parts. That is to say, the connection between the boss and the detection sleeve is detachable. In this way, when the boss is worn and fails, but the detection sleeve can still be used normally, the maintenance cost of the device of the present invention can be simplified by replacing only the boss.

[0020] Furthermore, by setting a groove, when the boss is inserted into the gap between the burr and the wire rope, the burr will also be inserted into the groove along the outer side wall of the boss. At this time, since the end of the burr is embedded in the groove, when the burr directly confronts the detection sleeve, that is, when the burr resists the detection sleeve by pressing against it, even if the burr is bent and deformed, it will be unable to bend under the squeezing force of the detection sleeve because its end is embedded in the groove.

[0021] The reason for preventing the broken wire from becoming folded is that, as described above, the clearance between the detection sleeve and the working wire rope can be relatively large due to the presence of the boss. In this case, the folded wire may be forcibly squeezed into the clearance between the detection sleeve and the wire rope under the pressure of the boss, thus failing to exert direct vertical pressure on the detection sleeve. Consequently, the burr may not provide sufficient vertical resistance to trigger the piezoelectric element, affecting the working effect of the invention.

[0022] Furthermore, the groove is designed to gradually narrow from top to bottom; for example, the cross-sectional shape of the groove is an inverted triangle. With this design, the end of the broken wire, i.e., the burr, receives increasing pressure from the sidewalls of the groove as the insertion depth increases. This ensures the burr is tightly clamped within the groove and does not detach, preventing the broken wire from folding under the pressure of the detection sleeve.

[0023] As a preferred embodiment of the present invention, pulley sets for holding working steel wire ropes are provided around the through holes at the top and bottom of the outer shell, and the pulley sets include two pulleys arranged symmetrically with respect to the through holes.

[0024] Two support rings that cooperate with the working wire rope are provided between the two detection sleeves. The inner diameter of the two support rings is larger than the inner diameter of the detection sleeves, and the two support rings are installed symmetrically with respect to the horizontal plane. The piezoelectric sheet is fixedly installed on one of the support rings.

[0025] Multiple springs are installed between the two support rings.

[0026] The mounting chamber is spindle-shaped, and all the springs are kept in a compressed state.

[0027] Based on this scheme, when the working wire rope is threaded into the interior of the invention, each pulley group holds the working wire rope. Through the combined action of the two pulley groups, the relative position of the portion of the working wire rope inside the device is restricted, ensuring a stable gap between the working wire rope and the detection sleeve / protrusion, thus preventing excessive wear on the detection sleeve / protrusion from the working wire rope. The specific cause of wear is that, during the operation of the suspended platform, the working wire rope is always suspended at a high altitude and is easily subject to wind, causing swaying. While slight swaying does not seriously affect the suspended platform itself, it can lead to concentrated local pressure on the protrusion, resulting in greater wear on the compressed portion of the protrusion than on the rest, ultimately shortening the service life of the invention. By using two pulley groups, this situation can be avoided. To ensure the limiting effect of the pulley groups, the pulleys used should have concave surfaces that mate with the outer surface of the wire rope.

[0028] It is worth noting that when the piezoelectric element is used as a sensor in this invention, it bears a small external load, has a long service life, and does not need to be replaced frequently. However, the detection sleeve, as a wear-prone component, obviously requires more frequent maintenance and replacement than the piezoelectric element. Therefore, by setting a support ring and installing the piezoelectric element on the support ring, the detection sleeve can be maintained and replaced during the maintenance of the device of this invention without disassembling the piezoelectric element, avoiding meaningless disassembly and assembly of the piezoelectric element and simplifying the maintenance process of this invention.

[0029] Furthermore, by installing multiple springs between the two support rings, the two support rings are supported by the spring force. This spring force keeps the two support rings separated when the invention does not detect a broken wire in the working steel wire rope. This prevents the piezoelectric element from being subjected to external compressive force, and the springs also buffer the vibrations generated during the operation of the suspended platform, preventing the piezoelectric element from being falsely triggered due to mechanical vibration. Based on this solution, since the piezoelectric element is never subjected to external compressive force when the invention does not detect a broken wire in the working steel wire rope, the stress situation of the piezoelectric element is greatly optimized. This means that a highly sensitive piezoelectric element can be used to improve the working sensitivity of the invention, which is beneficial to ensuring the working effect of the invention.

[0030] It is worth noting that the springs also serve to ensure the position of the detection sleeves, preventing them from shifting during operation. Specifically, the mounting chamber is shaped like a vertical spindle, and multiple springs are compressed. The spring force is transmitted to the two detection sleeves through the two support rings, pressing them firmly against the side wall of the mounting chamber. Because the spindle shape of the detection sleeves and the mounting chamber complement each other, the mounting chamber restricts the horizontal displacement of the detection sleeves. This means that the central axis of the detection sleeves coincides with the central axis of the through hole on the outer shell and remains unchanged under the action of the springs. This ensures that the detection sleeves will not shift during operation, preventing excessive wear on the boss due to displacement.

[0031] In a preferred embodiment of the present invention, a brush for cleaning the working steel wire rope is mounted on the detection sleeve. The brush is installed on the inner side of the top of the boss, and its bristles point away from the piezoelectric plate.

[0032] By incorporating a brush, fine sand particles adhering to the wire rope can be prevented from getting stuck in the gap between the boss and the wire rope, thus avoiding wear on the boss caused by sand particles and extending its service life. Furthermore, by using a brush with higher stiffness and shorter length, the brush can effectively clean various impurities adhering to the wire rope, keeping it clean. Moreover, the brush bristles should point away from the piezoelectric element. This allows impurities dislodged by the brush to fall downwards along the bristles instead of accumulating. Additionally, liquids flowing from the wire rope, such as rainwater, will be blocked by the bristles and directed away from the gap between the boss and the wire rope, reducing or even completely preventing liquid intrusion into the space surrounding the piezoelectric element. This provides a drier working environment for the piezoelectric element, ensuring its normal operation to a certain extent.

[0033] In summary, the beneficial effects of the present invention are as follows:

[0034] 1. When a broken wire appears in the working wire rope, a burr is formed on the wire rope. At this time, when the present invention passes over the surface of the wire rope, the burr generates resistance to the sliding of the detection sleeve and finally acts on the piezoelectric plate. The piezoelectric plate then emits an electrical signal. After being controlled by the microcontroller, the suspended platform stops moving and an alarm is triggered to the worker.

[0035] 2. By setting a boss, it can be inserted into the gap between the burr and the wire rope. This ensures that even with slight warping, the burr generates direct resistance with the detection sleeve, guaranteeing the triggering of the piezoelectric element. Furthermore, by setting a groove, when the boss is inserted into the gap, the burr will also slide downwards along the outer wall of the boss into the groove, preventing the broken wire from folding under the pressure of the detection sleeve, thus ensuring the triggering of the piezoelectric element.

[0036] 3. By setting two support rings and multiple springs, the piezoelectric element does not need to withstand external compressive force when the invention does not detect a broken wire in the working steel wire rope. This allows for the use of a highly sensitive piezoelectric element, improving the working sensitivity of the invention and ensuring its effectiveness. Simultaneously, by ensuring the springs are always in a compressed state and by designing the mounting chamber in a spindle shape, the detection sleeve does not shift position during operation, preventing excessive wear on the boss due to positional displacement of the detection sleeve. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 for Figure 1 A sectional view;

[0039] Figure 3 for Figure 2 Enlarged view of section A;

[0040] Figure 4 This is a front plan view of the first embodiment of the present invention;

[0041] Figure 5 for Figure 4 Enlarged view of section B;

[0042] Figure 6 for Figure 4 A sectional view of section C-C;

[0043] Figure 7 This is a front plan view of the second embodiment of the present invention;

[0044] Figure 8 for Figure 7 Enlarged view of section D.

[0045] In the diagram: 1. Outer shell; 2. Pulley; 3. Detection sleeve; 4. Support ring; 11. Mounting chamber; 31. Brush; 32. Groove; 33. Boss; 41. Spring; 42. Piezoelectric plate. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0047] like Figures 1 to 6 The image shows a first specific embodiment of the present invention, the purpose of which is to test the effectiveness of the present invention in monitoring broken wire defects in working steel wire ropes.

[0048] As preparation for the installation of this invention, several points need to be explained: First, for ease of assembly, the outer shell 1, the two detection sleeves 3, and the two support rings 4 are all manufactured as separate parts, and are symmetrically divided into two parts; Second, the two parts of the outer shell 1 are pre-connected by metal hinges, so that both parts can be freely opened and closed before being locked by threaded connection; Third, multiple supports for installing pulleys 2 are pre-manufactured around the through hole on the outer shell 1; Fourth, the support rings 4 and detection sleeves 3 are both rotating bodies. Therefore, the two parts of the support ring 4 produced by separate manufacturing are completely identical. For ease of description, they will be referred to as support half-rings in the following text. Similarly, the two parts of the detection sleeve 3 produced by separate manufacturing will be referred to as half-sleeves in the following text; Fifth, the detection sleeve 3 is made of steel as a whole. The boss 33 is manufactured together with the detection sleeve 3. The groove 32 is directly opened on the detection sleeve 3. The brush 31 is installed by gluing the brush bristles; Sixth, unless otherwise specified, the following fixed connection methods all adopt the form of threaded connection.

[0049] When installing this invention, multiple pulleys 2 are bolted to their corresponding supports on the outer casing 1. Then, two support half-rings are removed. Three springs 41 are fixedly installed on one of the support half-rings, and then a piezoelectric sheet 42 is fixedly installed on it. Next, the other support half-ring is fixedly connected to the other ends of the three springs 41. This process is repeated for the other two support half-rings. Afterward, two semi-sliding sleeves are removed and symmetrically installed into the mounting chamber 11 relative to a plane perpendicular to the axis of the through hole on the outer casing 1. Then, the three springs... The two supporting semi-rings 41 are movably installed into the mounting chamber 11 between the two semi-sleeves, at which point the three springs 41 are compressed. Then, the assembled assembly is installed onto the wire rope, so that the wire rope is placed on the two pulleys 2 and kept taut. At this time, the two semi-sleeves are respectively fixedly installed onto the two semi-sleeves located in the mounting chamber 11, and the two supporting semi-rings are also respectively fixedly installed onto the corresponding supporting semi-rings. Finally, the other part of the outer shell 1 is closed, and the two parts of the outer shell 1 are fixedly connected. Thus, the installation of the present invention is completed.

[0050] When this invention is in operation, ten steel wire ropes with a diameter of 8.3 mm are prepared. These steel wire ropes are suspended from top to bottom and taut using scaffolding. Within the experimental length of each steel wire rope, a single point is ground with a hand grinder to cause a single broken wire in that point. Then, for each steel wire rope, this invention is used to move along the steel wire rope from bottom to top. An electric slide rail driven by a servo motor drives the invention to move automatically. Thus, the piezoelectric piece 42 and the servo motor are electrically connected through a microcontroller. Under the drive of the electric slide rail, the invention moves at a speed of 18 m / min.

[0051] When the invention was tested on ten steel wire ropes, the sliding was not hindered when the invention moved along the undamaged part of the steel wire rope, and no scraping sound was produced due to the steel wire rope rubbing against the internal components; when the invention passed the broken wire defect, the servo motor automatically stopped working, that is, the electric slide rail stopped climbing.

[0052] For each experimental group where the servo motor automatically stopped working, the inside of the invention was opened for observation. The boss 33 was inserted into the gap between the burr at the broken wire and the steel wire rope, and the end of the burr was inserted into the groove 32 downward along the outer side wall of the boss 33. The burr was bent downward. The support ring 4 overcame the elastic force of the spring 41 and tilted to the corresponding side, squeezing the piezoelectric sheet 42, thus triggering the servo motor to stop.

[0053] Experiments have shown that this invention can monitor wire breakage phenomena occurring in steel wire ropes.

[0054] like Figures 1 to 3 , Figure 7 as well as Figure 8 The diagram illustrates a second embodiment of the invention, the purpose of which is to replace the boss 33. Compared to the first embodiment, this embodiment differs in that, for ease of replacement, the boss 33 and the detection sleeve 3 are detachably connected, specifically by a threaded connection. To improve the durability of the boss 33, it is made of steel and undergoes surface hardening. Thanks to the steel material, the boss 33 possesses sufficient strength, allowing for the creation of a mounting groove for the brush 31 on its inner wall while maintaining sufficient strength. The brush 31 is then pre-installed into this mounting groove via an interference fit. In this case, the groove 32 and the boss 33 are made of the same steel material; that is, the groove 32 and the boss 33 are concentrated on the same component.

[0055] When replacing the boss 33, loosen the screws connecting the two parts of the housing 1, then open the housing 1, rotate the detection sleeve 3, and expose the screws connecting the detection sleeve 3 and the boss 33 to the outside of the housing 1 that can be reached by a screwdriver. Then loosen the screws and continue rotating the detection sleeve 3. Repeat the above operation until all the screws connecting the detection sleeve 3 and the boss 33 are removed. After that, remove the boss 33 from the detection sleeve 3 through the gap between the detection sleeve 3 and the housing 1. This completes the removal of the boss 33.

[0056] Next, the above disassembly operations are performed in reverse order to install the new boss 33 onto the device of the present invention. Thus, the replacement of the boss 33 in the present invention is completed.

Claims

1. A green building construction monitoring device, characterized in that, include: The outer shell (1) has an installation compartment (11) inside. The outer shell (1) has a through hole for installing the working wire rope and the through hole is connected to the installation compartment (11). The installation compartment (11) has two detection sleeves (3) installed in the vertical direction, which cooperate with the working wire rope and the installation compartment (11). A piezoelectric piece (42) is provided between the two detection sleeves (3) and the piezoelectric piece is electrically connected to the high-altitude suspended basket. The detection sleeve (3) has a boss (33) installed around the through hole. The boss (33) is annular and cooperates with the working wire rope. The boss (33) has a groove (32) on its periphery; The groove (32) gradually narrows from its top end to its bottom end; The outer shell (1) is provided with pulley sets for holding working steel wire ropes around the through holes at the top and bottom ends. The pulley sets include two pulleys (2) arranged symmetrically with respect to the through holes. Two support rings (4) that cooperate with the working wire rope are provided between the two detection sleeves (3). The inner diameter of the two support rings (4) is larger than the inner diameter of the detection sleeves (3), and the two support rings (4) are symmetrically installed with respect to the horizontal plane. The piezoelectric sheet (42) is fixedly installed on one of the support rings (4). A plurality of springs (41) are installed between the two support rings (4); The mounting chamber (11) is spindle-shaped, and all the springs (41) are kept in a compressed state; The detection sleeve (3) is equipped with a brush (31) for cleaning the working steel wire rope; The brush (31) is installed on the inner side of the top of the boss (33), and its bristles point away from the piezoelectric sheet (42).

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