A metering device and method for construction of a protective screen

Abstract

The application provides a metering device and method for construction of a building protection net, and relates to the technical field of building construction. The metering device comprises a base, a positioning mechanism, an auxiliary mechanism and a marking mechanism arranged on the top of the base. The positioning mechanism comprises a shell and a first connecting roller. A first positioning rod is rotatably connected to the inner surface of the shell through a bearing. A bent plate is fixedly connected to the outer surface of the first positioning rod. One end of the bent plate is rotatably connected to a second connecting roller through a bearing. The middle part of the supporting rod is stretched in an extension position. The limiting plate moves on the swing frame. The supporting rod always remains horizontal through the universal shaft. At this time, the protection net can be evenly and stably opened, the initial end of the protection net is accurately transported to the bottom of the first electric conveying belt and contacted, perfect initial conditions are provided for subsequent metering, leveling and positioning operations, metering errors caused by unstable conveying are greatly reduced, and accurate metering is firmly guaranteed.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a meter-counting device and method for the construction of building protective nets. Background Technology

[0002] During the construction of protective netting, the netting is frequently needed. Accurately measuring its length is crucial for ensuring smooth construction, project quality, and cost control. However, during the metering and outward transport of the netting, the lack of reliable positioning on both sides causes frequent shifts and swaying. Furthermore, the lack of effective support in the middle section contributes to this unstable transport, resulting in a chaotic movement path within the metering equipment. This makes it difficult for the metering device to accurately determine the netting length according to the set measurement method, leading to significant metering errors. Moreover, traditional equipment typically stacks the netting together during winding. Wrapping or twisting can easily cause measurement errors and lead to discrepancies between the actual and ideal positions of the protective netting during measurement, significantly affecting the accuracy of the measurement. Furthermore, due to differences in material and uneven weight distribution, the protective netting is prone to wrinkling and twisting. Wrinkled or twisted netting will result in a significant deviation between the actual length measured by the measuring device and the actual length measured by the device. This will affect operations such as cutting and splicing the netting during construction, causing material waste and construction delays. Inaccurate markings during cutting and splicing can lead to misjudgments of the netting length by construction workers, resulting in material waste. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems by providing a meter-counting device and method for the construction of building safety nets.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a meter-counting device for construction of building protective netting, comprising a base, a positioning mechanism, an auxiliary mechanism, and a marking mechanism on the top of the base, the positioning mechanism comprising a housing and a first connecting roller, an arc-shaped frame fixedly connected to the inner surface of the housing, a first positioning rod rotatably connected to the inner surface of the housing via a bearing, a curved plate fixedly connected to the outer surface of the first positioning rod, a second connecting roller rotatably connected to one end of the curved plate via a bearing, a first positioning band slidably connected to the outer surfaces of the first connecting roller, the second connecting roller, and the arc-shaped frame, a rotating rod rotatably connected to the inner surface of the housing via a bearing, a rotating roller fixedly connected to the outer surface of the rotating rod, a first positioning groove formed on the outer surface of the rotating roller, and a plurality of first teeth fixedly connected to the outer surface of the first positioning band.

[0005] Preferably, the outer surface of the arc-shaped frame is provided with a circular groove and a square groove. A spring is fixedly connected to the inner surface of the square groove, and a connecting frame is fixedly connected to the other end of the spring. The outer surface of the connecting frame is rotatably connected to the first connecting roller through a bearing. A round rod is slidably connected to the inner surface of the circular groove, and the other end of the round rod is fixedly connected to the connecting frame.

[0006] Preferably, an electric slide rail is fixedly connected to the inner surface of the housing, a sliding block is slidably connected to the inner surface of the electric slide rail, a second positioning rod is fixedly connected to the outer surface of the sliding block, and an elongated groove is formed on the outer surface of the bent plate, with the second positioning rod slidably connected to the inner surface of the elongated groove.

[0007] Preferably, a mounting bracket is fixedly connected to the inner surface of the housing, a first electric conveyor belt is mounted on the outer surface of the mounting bracket, and a third electric conveyor belt is mounted on the inner surface of the housing near the bottom.

[0008] Preferably, the auxiliary mechanism includes a swing frame, a support frame fixedly connected to the outer surface of the swing frame, a second electric conveyor belt mounted on the surface of the support frame, a plurality of second teeth fixedly connected to the outer surface of the second electric conveyor belt, a support rod rotatably connected to the outer surface of the support frame via a universal joint, the middle part of the support rod being a telescopic section, a third connecting roller mounted on the inner surface of the housing, a second positioning belt drivingly connected to the outer surface of the third connecting roller, a support plate fixedly connected to the surface of the housing, two support rods rotatably connected to the upper surface of the support plate via bearings, the upper surfaces of the two support rods fixedly connected to the swing frame, an incomplete gear fixedly connected to the outer surface of each of the two support rods, the two incomplete gears meshing with each other, and a first motor mounted on the lower surface of the support plate, the output end of the first motor fixedly connected to one of the support rods.

[0009] Preferably, the marking mechanism includes a fixed frame, a liquid storage tank fixedly connected to the outer surface of the fixed frame, a fixed box fixedly connected to the inner surface of the liquid storage tank, a water outlet hole on the outer surface of the fixed box, a limit hole on the upper surface of the liquid storage tank, a limit rod slidably connected to the inner surface of the limit hole, a folding plate fixedly connected to the lower surface of the limit rod, a fixed plate fixedly connected to the upper surface of the limit rod, a fixed rod fixedly connected to the surface of the fixed plate near the top, a third positioning rod fixedly connected to the inner surface of the housing, a rotating plate rotatably connected to the outer surface of the third positioning rod, a limit groove on the outer surface of the rotating plate, a fixed rod slidably connected to the limit groove, multiple nozzles connected to the bottom of the liquid storage tank, a liquid inlet pipe connected to the outer surface of the liquid storage tank, and a baffle fixedly connected to the outer surface of the rotating roller.

[0010] Preferably, the horizontal section of the folding plate is slidably connected to the liquid storage tank, the vertical section of the folding plate is slidably connected to the liquid storage tank and the fixed box respectively, a torsion spring is fixedly connected between the rotating plate and the third positioning rod, and a through hole for the rotating plate to pass through is provided on the outer surface of the fixed frame.

[0011] Preferably, a code disk is fixedly connected to the surface of the rotating rod, a laser light is fixedly connected to the inner surface of the housing, a connecting plate is fixedly connected to the inner surface of the housing, a receiver is fixedly connected to the surface of the connecting plate, a control panel is installed on the outer surface of the housing, and the base is fixedly connected to the housing.

[0012] Preferably, a second motor is fixedly installed on the outer surface of the housing, the output end of the second motor is fixedly connected to the rotating rod, the housing is fixedly connected to the fixing frame, and a winding roller is installed on the inner surface of the housing.

[0013] A preferred method for recording the length of a construction safety net includes the following steps:

[0014] S1: Store the protective netting in the take-up roller. When in use, pull out the initial end and pull it upwards, hook it at the initial position of the second tooth, start the second electric conveyor belt, which drives the second tooth transmission to move the rolled-up protective netting into the device. The netting edges on both sides are sequentially locked onto the second tooth for conveying, and the middle pile-up part is supported by the support rod.

[0015] S2: The protective net is moved to the other end of the second electric conveyor belt. The first motor is started and the two support rods are rotated through the incomplete gear transmission, causing the swing frame to swing and open the protective net horizontally. Its initial end is transported to the bottom of the first electric conveyor belt for contact, and then moved to the surface of the rotating roller. The first tooth is engaged in the positioning groove, which drives the two sides of the protective net to be transported synchronously and flattened.

[0016] S3: For protective nets of different thicknesses, start the electric slide rail, the bending plate drives the second connecting roller to rotate, press down the first positioning belt, and bring the first tooth close to the first positioning groove to ensure stable transmission of the protective net.

[0017] S4: The protective net moves to the bottom of the device, the rotating roller rotates one revolution, its surface baffle contacts the rotating plate, the rotating plate rotates clockwise, pushing the fixed rod and other components to move the folding plate down, blocking the water outlet and pressing the solution in the storage tank, spraying it out from the nozzle to mark the protective net, achieving equidistant marking.

[0018] S5: The rotating rod rotates, driving the code disk, turning on the laser light. The light passes through the gap of the code disk and is received by the receiver. After being processed by the circuit, an electrical pulse signal is output. The instrument calculates the length of the protective net and displays it on the control panel. Finally, the protective net is transported out of the device by the third electric conveyor belt at the bottom.

[0019] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0020] This invention proposes a metering device and method for construction safety netting. The device conveys the safety net by sequentially engaging the two sides of the net with the second tooth, ensuring the net does not shift or sway during transport. Simultaneously, support rods lift the central accumulation section, preventing the net from sagging or dragging on the ground due to its own weight, thus avoiding wear or damage. When the net reaches the other end of the second electric conveyor belt, a first motor drives an incomplete gear, rotating two support rods and causing the swing frame to swing. During this process, the middle extension position of the support rod stretches, and the limiting plate moves on the swing frame. The support rod remains horizontal via a universal joint, allowing the safety net to open evenly and smoothly. This ensures the initial end of the net is accurately delivered to the bottom of the first electric conveyor belt and makes contact, providing perfect initial conditions for subsequent metering operations such as leveling and positioning. This significantly reduces metering errors caused by unstable transport, providing a solid guarantee for accurate metering.

[0021] This invention proposes a metering device and method for construction safety netting. When the safety netting moves to the position of the first tooth under the drive of the first electric conveyor belt, the first tooth engages with the positioning groove on the surface of the rotating roller, precisely embedding the two edges of the safety netting into the positioning groove. This ensures that the safety netting remains in the correct position during transportation, avoiding significant errors in metering. Simultaneously, the flattened safety netting has a regular shape, and the first tooth, when engaged in the first positioning groove, drives the simultaneous transportation of both sides of the safety netting. This dual-sided synchronous traction effectively avoids significant deviations between the actual length and the length measured by the metering device due to wrinkled or twisted safety netting. The safety netting remains flat on the rotating roller surface throughout transportation, further improving the flatness of the safety netting during transport and significantly increasing metering accuracy, meeting the high-precision measurement requirements for safety netting length in construction.

[0022] This invention proposes a metering device and method for construction safety netting. It uses an electric slide rail to drive a sliding block, which in turn moves a second positioning rod, adjusting the pressure of the second connecting roller on the first positioning belt. This allows the first tooth to move closer to the first positioning groove. This precise adjustment function enables the device to be compatible with safety nets of various thicknesses. By adjusting the pressing effect of the first tooth according to the thickness of the safety net, the stability of the safety net during transport can be guaranteed. This effectively prevents slippage and deviation during transmission, ensuring the safety net moves smoothly within the device. This significantly improves the accuracy and efficiency of metering safety nets of different thicknesses, meeting the diverse metering needs of safety nets in construction projects.

[0023] 4. This invention proposes a metering device and method for the construction of protective netting. The rotating roller rotates once, and a baffle plate on its surface contacts the rotating plate. The rotating plate rotates clockwise. When the baffle plate leaves the rotating plate, the rotating plate is reset by a torsion spring, completing one spraying cycle. A dye-containing solution is sprayed onto the protective netting for marking. Each rotation of the rotating roller triggers a marking action, ensuring that the marking intervals for each section of the protective netting are equal, achieving equidistant marking of the protective netting. This allows workers to quickly and accurately estimate the length of the protective netting based on these precise equidistant markings, greatly improving work efficiency. Especially when cutting or splicing the protective netting, accurate length estimation reduces material waste and improves the economic efficiency of using the protective netting. Attached Figure Description

[0024] Figure 1 This invention provides an external structural schematic diagram of a meter-counting device and method for the construction of building safety nets.

[0025] Figure 2 This invention provides a partial sectional view of the side view of a meter-counting device and method for the construction of building safety nets.

[0026] Figure 3 This invention provides a partial structural diagram of a winding roller for a meter-counting device and method used in the construction of building safety nets.

[0027] Figure 4 This is a partial structural diagram of the rotating rod of a meter-counting device and method for the construction of building safety nets proposed in this invention.

[0028] Figure 5 This invention provides a schematic diagram of a spring-driven partial structure for a meter-counting device and method used in the construction of building safety nets.

[0029] Figure 6 for Figure 2 A magnified view of the structure at point A in the middle;

[0030] Figure 7 This is a partial structural diagram of the second tooth of the meter-counting device and method for construction of building safety nets proposed in this invention;

[0031] Figure 8 This is a partial structural diagram of the support rod for a meter-counting device and method for the construction of building safety nets proposed in this invention.

[0032] Figure 9 This is a partial structural diagram of the fixing plate of the meter-counting device and method for construction of building safety nets proposed in this invention;

[0033] Figure 10This is a partial structural diagram of a curved plate for a meter-counting device and method for the construction of building safety nets, as proposed in this invention.

[0034] Legend: 1. Base; 2. Positioning mechanism; 201. Housing; 202. First connecting roller; 203. Arc frame; 204. First positioning rod; 205. Bend plate; 206. Second connecting roller; 207. First positioning belt; 208. Rotating rod; 209. Rotating roller; 210. First positioning groove; 211. First tooth; 3. Auxiliary mechanism; 301. Swing frame; 302. Support frame; 303. Second electric conveyor belt; 304. Second tooth; 305. Support rod; 306. Third connecting roller; 307. Second positioning belt; 308. Support plate; 309. Support rod; 310. Incomplete gear; 311. First motor; 4. Marking mechanism; 401. Fixing frame; 402. Liquid storage tank; 403. Fixing box; 404. Water outlet; 405. Limiting hole; 406. Limiting rod; 407. Folding plate; 408. Fixing plate; 409. Fixing rod; 410. Third positioning rod; 411. Rotating plate; 412. Limiting groove; 413. Nozzle; 414. Liquid inlet pipe; 5. Circular groove; 6. Square groove; 7. Spring; 8. Connecting frame; 9. Round rod; 10. Electric slide rail; 11. Sliding block; 12. Second positioning rod; 13. Long groove; 14. Mounting frame; 15. First electric conveyor belt; 16. Third electric conveyor belt; 17. Take-up roller; 18. Baffle; 19. Control panel; 20. Limiting plate; 21. Torsion spring; 22. Through hole; 23. Encoder; 24. Laser light; 25. Connecting plate; 26. Receiver; 27. Second motor. Detailed Implementation

[0035] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0036] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0037] like Figure 1 - Figure 10As shown, a metering device for construction of protective netting includes a base 1. The top of the base 1 is provided with a positioning mechanism 2, an auxiliary mechanism 3, and a marking mechanism 4. The positioning mechanism 2 includes a housing 201 and a first connecting roller 202. An arc-shaped frame 203 is fixedly connected to the inner surface of the housing 201. A first positioning rod 204 is rotatably connected to the inner surface of the housing 201 via a bearing. A curved plate 205 is fixedly connected to the outer surface of the first positioning rod 204. A second connecting roller 206 is rotatably connected to one end of the curved plate 205 via a bearing. A first positioning belt 207 is slidably connected to the outer surfaces of the first connecting roller 202, the second connecting roller 206, and the arc-shaped frame 203. A rotating rod 208 is rotatably connected to the inner surface of the housing 201 via a bearing. A rotating roller 209 is fixedly connected to the outer surface of the rotating rod 208. A first positioning groove 210 is opened on the outer surface of the rotating roller 209. A plurality of first teeth 211 are fixedly connected to the outer surface of the first positioning belt 207.

[0038] The effect is that the protective net is transported to the surface of the rotating roller 209. At this time, the rotating roller 209 has a positioning groove on its surface. The first tooth 211 is set inside the first positioning groove 210, so that the positions of the two sides of the protective net enter the interior of the positioning groove and are transported synchronously, so that the protective net is laid flat.

[0039] like Figure 1 - Figure 10 As shown, the outer surface of the arc frame 203 is provided with a circular groove 5 and a square groove 6. A spring 7 is fixedly connected to the inner surface of the square groove 6. A connecting frame 8 is fixedly connected to the other end of the spring 7. The outer surface of the connecting frame 8 is rotatably connected to the first connecting roller 202 through a bearing. A round rod 9 is slidably connected to the inner surface of the circular groove 5. The other end of the round rod 9 is fixedly connected to the connecting frame 8. An electric slide rail 10 is fixedly connected to the inner surface of the housing 201. A sliding block 11 is slidably connected to the inner surface of the electric slide rail 10. A second positioning rod 12 is fixedly connected to the outer surface of the sliding block 11. A long groove 13 is provided on the outer surface of the curved plate 205. The second positioning rod 12 is slidably connected to the inner surface of the long groove 13. A mounting frame 14 is fixedly connected to the inner surface of the housing 201. A first electric conveyor belt 15 is installed on the outer surface of the mounting frame 14. A third electric conveyor belt 16 is installed on the inner surface of the housing 201 near the bottom.

[0040] The effect is that by activating the electric slide rail 10, the two sliding blocks 11 sliding on the electric slide rail 10 move in opposite directions. The sliding blocks 11 drive the second positioning rod 12 to move. The second positioning rod 12 always slides inside the long groove 13 on the curved plate 205. When the second positioning rod 12 at the top moves upward, the second positioning rod 12 can push the top curved plate 205 to rotate counterclockwise through the long groove 13, thereby driving the second connecting roller 206 to rotate around the first positioning rod 204. This allows the second connecting roller 206 to press down on the first positioning belt 207 on the surface, thereby making the first tooth 211 closer to the first positioning groove 210, so that the protective net can be stably transmitted inside.

[0041] like Figure 1 - Figure 10 As shown, the auxiliary mechanism 3 includes a swing frame 301, a support frame 302 fixedly connected to the outer surface of the swing frame 301, a second electric conveyor belt 303 mounted on the surface of the support frame 302, a plurality of second teeth 304 fixedly connected to the outer surface of the second electric conveyor belt 303, a support rod 305 rotatably connected to the outer surface of the support frame 302 via a universal joint, the middle part of the support rod 305 being a telescopic section, a third connecting roller 306 mounted on the inner surface of the housing 201, a second positioning belt 307 being drively connected to the outer surface of the third connecting roller 306, a support plate 308 fixedly connected to the surface of the housing 201, two support rods 309 rotatably connected to the upper surface of the support plate 308 via bearings, the upper surfaces of the two support rods 309 being fixedly connected to the swing frame 301, incomplete gears 310 fixedly connected to the outer surfaces of the two support rods 309, the two incomplete gears 310 meshing with each other, a first motor 311 mounted on the lower surface of the support plate 308, the output end of the first motor 311 being fixedly connected to one of the support rods 309.

[0042] The effect is as follows: the mesh openings on both sides of the protective net are hooked into the initial position of the second teeth 304. When the second electric conveyor belt 303 is started, it drives the second teeth 304 on its surface to transmit power and moves the wound protective net into the device. At this time, the protective net moves with the second conveyor belt, and the net edges on both sides are sequentially hooked onto the second teeth 304 for conveying. The portion of the protective net piled up in the middle is supported by the support rod 305. The support rod 305 is equipped with a vertically set limiting plate 20. The bottom of the limiting plate 20 contacts the platform at the bottom of the swing frame 301, allowing the limiting plate 20 to always slide on the swing frame 301. Through the limiting of the limiting plate 20, the support rod 305... 05 will not rotate. When it moves to the other end of the second electric conveyor belt 303, the first motor 311 is started. The first motor 311 drives one of the support rods 309 to rotate. One of the support rods 309 drives the incomplete gear 310 on the surface to rotate. The incomplete gear 310 drives another incomplete gear 310 to rotate synchronously in the opposite direction, thereby driving the other support rod 309 to rotate. The two support rods 309 drive the top swing frame 301 to swing. At this time, the telescopic position of the middle part of the support rod 305 is stretched, the limit plate 20 moves on the swing frame 301, and the support rod 305 always maintains a horizontal state through the universal joint, which can open the protective net.

[0043] like Figure 1 - Figure 10 As shown, the marking mechanism 4 includes a fixing frame 401, a liquid storage tank 402 fixedly connected to the outer surface of the fixing frame 401, a fixing box 403 fixedly connected to the inner surface of the liquid storage tank 402, a water outlet 404 opened on the outer surface of the fixing box 403, a limiting hole 405 opened on the upper surface of the liquid storage tank 402, a limiting rod 406 slidably connected to the inner surface of the limiting hole 405, a folding plate 407 fixedly connected to the lower surface of the limiting rod 406, a fixing plate 408 fixedly connected to the upper surface of the limiting rod 406, a fixing rod 409 fixedly connected to the surface of the fixing plate 408 near the top, a third positioning rod 410 fixedly connected to the inner surface of the housing 201, and the outer surface of the third positioning rod 410... A rotating plate 411 is rotatably connected to the surface. A limiting groove 412 is opened on the outer surface of the rotating plate 411. The fixed rod 409 is slidably connected to the limiting groove 412. Multiple nozzles 413 are connected to the bottom of the liquid storage tank 402. An inlet pipe 414 is connected to the outer surface of the liquid storage tank 402. A baffle 18 is fixedly connected to the outer surface of the rotating roller 209. The horizontal section of the folding plate 407 is slidably connected to the liquid storage tank 402. The vertical section of the folding plate 407 is slidably connected to the liquid storage tank 402 and the fixed box 403 respectively. A torsion spring 21 is fixedly connected between the rotating plate 411 and the third positioning rod 410. A through hole 22 for the rotating plate 411 to pass through is opened on the outer surface of the fixed frame 401.

[0044] The effect is as follows: when the rotating roller 209 rotates one revolution, the baffle 18 on its surface contacts the rotating plate 411. The rotating plate 411 rotates clockwise. Since the fixed rod 409 always slides inside the limiting groove 412, when the rotating plate 411 rotates clockwise, it can push the fixed rod 409 downward. The fixed rod 409 drives the fixed plate 408 downward, and the fixed plate 408 drives the limiting rod 406 downward. The limiting rod 406 pushes the folding plate 407 downward. The fixed box 403 stores a dyeing solution, which enters the storage solution through the water outlet 404. Inside the tank 402, when the folding plate 407 moves downward, the vertical section on the side of the folding plate 407 blocks the water outlet 404, and the horizontal plate at the bottom of the folding plate 407 presses the solution downward, causing the solution to spray out from the nozzle 413 and mark the protective net. When the baffle 18 leaves the rotating plate 411, the torsion spring 21 connected to the rotating plate 411 resets, causing the rotating plate 411 to reset, and the folding plate 407 moves upward. The solution inside the fixed tank 403 enters the interior of the storage tank 402 through the water inlet to replenish the solution. At this time, the protective net can be marked at equal intervals.

[0045] like Figure 1 - Figure 10 As shown, a code disk 23 is fixedly connected to the surface of the rotating rod 208, a laser lamp 24 is fixedly connected to the inner surface of the housing 201, a connecting plate 25 is fixedly connected to the inner surface of the housing 201, a receiver 26 is fixedly connected to the surface of the connecting plate 25, a control panel 19 is installed on the outer surface of the housing 201, the base 1 is fixedly connected to the housing 201, a second motor 27 is fixedly installed on the outer surface of the housing 201, the output end of the second motor 27 is fixedly connected to the rotating rod 208, the housing 201 is fixedly connected to the fixing frame 401, and a take-up roller 17 is installed on the inner surface of the housing 201.

[0046] The effect is that when the rotating rod 208 rotates, it drives the code disk 23 to rotate, and activates the laser light 24. During the rotation of the code disk 23, the light can pass through the gaps in the code disk 23 and simultaneously shine on the receiver 26, which receives the light. After the circuit is processed, an electrical pulse signal is output. The length of the protective net output during rotation is calculated by the instrument and displayed on the control panel 19 on the surface.

[0047] like Figure 1 - Figure 10 As shown, a method for recording meters during the construction of building safety nets includes the following steps:

[0048] S1: The protective net is wound up and stored in the winding roller 17. When in use, the initial end is pulled out and pulled upwards, and it is hung in the initial position of the second tooth 304. The second electric conveyor belt 303 is started, which drives the second tooth 304 to move the wound protective net into the device. The net edges on both sides are sequentially locked on the second tooth 304 and conveyed. The middle piled part is supported by the support rod 305.

[0049] S2: The protective net is moved to the other end of the second electric conveyor belt 303. The first motor 311 is started and driven by the incomplete gear 310 to rotate the two support rods 309, causing the swing frame 301 to swing and open the protective net horizontally. The initial end of the net is transported to the bottom of the first electric conveyor belt 15 for contact and then moved to the surface of the rotating roller 209. The first tooth 211 is engaged in the positioning groove, driving the two sides of the protective net to be transported synchronously and flattened.

[0050] S3: For protective nets of different thicknesses, start the electric slide rail 10, the bending plate 205 drives the second connecting roller 206 to rotate, press down the first positioning belt 207, and bring the first tooth 211 close to the first positioning groove 210 to ensure stable transmission of the protective net.

[0051] S4: The protective net moves to the bottom of the device, the rotating roller 209 rotates one revolution, and its surface baffle 18 contacts the rotating plate 411. The rotating plate 411 rotates clockwise, pushing the fixed rod 409 and other components to move the folding plate 407 down, blocking the water outlet 404 and pressing the solution in the storage tank 402, which is then sprayed out from the nozzle 413 to mark the protective net, achieving equidistant marking.

[0052] S5: Rotating rod 208 drives encoder 23, laser light 24 is turned on, light passes through the gap of encoder 23 and is received by receiver 26, processed by circuit and output as an electrical pulse signal. The instrument calculates the length of the protective net and displays it on control panel 19. Finally, the protective net is conveyed out of the device by the bottom third electric conveyor belt 16.

[0053] The working principle is as follows: The protective netting is wound up and stored on the take-up roller 17. When needed, the initial end of the protective netting is pulled out and pulled upwards, so that the mesh on both sides of the protective netting is hooked into the initial position of the second teeth 304. The second electric conveyor belt 303 is started, which can drive the second teeth 304 on the surface to perform transmission and move the wound protective netting into the device. At this time, the protective netting moves with the second conveyor belt, and the mesh edges on both sides are successively hooked into the second teeth 304 for conveying. At this time, the part of the protective netting piled up in the middle is supported by the support rod 305. The support rod 305 is provided with a downwardly vertically set limiting plate 20. The bottom of the limiting plate 20 contacts the platform at the bottom of the swing frame 301, so that the limiting plate 20 can always slide on the swing frame 301. The limiting plate 20 prevents the support rod 305 from rotating. When it moves to the other end of the second electric conveyor belt 303, the first motor 311 is started. The first motor 311 drives one of the support rods 309 to rotate. One of the support rods 309 drives the incomplete gear 310 on the surface to rotate. The incomplete gear 310 drives another incomplete gear 310 to rotate synchronously in the opposite direction, thereby driving the other support rod 309 to rotate. The two support rods 309 drive the top swing frame 301 to swing. At this time, the telescopic position of the middle part of the support rod 305 is stretched, the limiting plate 20 moves on the swing frame 301, and the support rod 305 always remains horizontal through the universal joint, which can open the protective net, allowing the initial end of the protective net to open. The protective net is then transported to the bottom of the first electric conveyor belt 15 and comes into contact with it. The gap between the first electric conveyor belt 15 and the mounting frame 14 provides a precise channel for the operation of the first tooth 211, allowing the first tooth 211 to pass through the gap. As the first electric conveyor belt 15 continues to move the protective net, it reaches the position of the first tooth 211. At the same time, the protective net is transported to the surface of the rotating roller 209. At this time, the rotating roller 209 has a positioning groove on its surface. The first tooth 211 is set inside the first positioning groove 210, so that the edges of both sides of the protective net enter the positioning groove and are transported synchronously, making the protective net flat. When the thickness of the protective net is different, the pressing effect of the first tooth 211 needs to be adjusted. When the protective net is thinner, the pressing effect of the first tooth 211 needs to be adjusted. By activating the electric slide rail 10, the two sliding blocks 11 on the electric slide rail 10 move in opposite directions. The sliding blocks 11 drive the second positioning rod 12 to move. The second positioning rod 12 always slides inside the long groove 13 on the curved plate 205. When the second positioning rod 12 at the top moves upward, it can push the top curved plate 205 to rotate counterclockwise through the long groove 13. This can drive the second connecting roller 206 to rotate around the first positioning rod 204, so that the second connecting roller 206 can press down on the first positioning belt 207 on the surface, thereby bringing the first tooth 211 closer to the first positioning groove 210. This allows the protective net to move stably inside. When the protective net moves to the bottom of the device, the rotating roller 209 rotates one revolution.The baffle 18 on the surface contacts the rotating plate 411. The rotating plate 411 rotates clockwise. Since the fixed rod 409 always slides inside the limiting groove 412, when the rotating plate 411 rotates clockwise, it can push the fixed rod 409 to move downward. The fixed rod 409 drives the fixed plate 408 to move downward. The fixed plate 408 drives the limiting rod 406 to move downward. The limiting rod 406 pushes the folding plate 407 to move downward. The fixed box 403 stores a dyeing solution, which enters the storage tank 402 through the water outlet 404. When the folding plate 407 moves downward, the vertical section on the side of the folding plate 407 blocks the water outlet 404. The horizontal plate at the bottom of the folding plate 407 presses down on the solution, causing the solution to spray out from the nozzle 413 and mark the protective net. When the baffle 18 leaves the rotating plate 411, the rotating plate 41... The torsion spring 21 connected to the top resets, causing the rotating plate 411 to reset and the folding plate 407 to move upward. The solution inside the fixed box 403 enters the storage tank 402 through the inlet to replenish the solution. At this time, the protective net can be marked at equal intervals, which is convenient for the staff to estimate the length in subsequent use. At the same time, when the rotating rod 208 rotates, it drives the code disk 23 to rotate, and activates the laser light 24. During the rotation of the code disk 23, the light can pass through the gaps on the code disk 23 and shine on the receiver 26, which receives the light. After the circuit is processed, an electrical pulse signal is output. The instrument calculates the length of the protective net output during rotation and displays it on the control panel 19 on the surface. At the same time, the protective net is transported out of the device by the third electric conveyor belt 16 at the bottom.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A meter-counting device for the construction of building safety nets, comprising a base (1), characterized in that: The top of the base (1) is provided with a positioning mechanism (2), an auxiliary mechanism (3), and a marking mechanism (4). The positioning mechanism (2) includes a housing (201) and a first connecting roller (202). An arc frame (203) is fixedly connected to the inner surface of the housing (201). A first positioning rod (204) is rotatably connected to the inner surface of the housing (201) via a bearing. A bent plate (205) is fixedly connected to the outer surface of the first positioning rod (204). A second connecting roller (206) is rotatably connected to one end of the bent plate (205) via a bearing. A first positioning belt (207) is slidably connected to the outer surfaces of the first connecting roller (202), the second connecting roller (206), and the arc frame (203). The inner surface of the auxiliary mechanism (3) is rotatably connected to a rotating rod (208) via a bearing. A rotating roller (209) is fixedly connected to the outer surface of the rotating rod (208). A first positioning groove (210) is opened on the outer surface of the rotating roller (209). A plurality of first teeth (211) are fixedly connected to the outer surface of the first positioning belt (207). The auxiliary mechanism (3) includes a swing frame (301). A support frame (302) is fixedly connected to the outer surface of the swing frame (301). A second electric conveyor belt (303) is mounted on the surface of the support frame (302). A plurality of second teeth (304) are fixedly connected to the outer surface of the second electric conveyor belt (303). A support is rotatably connected to the outer surface of the support frame (302) via a universal joint. The rod (305) has a telescopic section in the middle. A third connecting roller (306) is installed on the inner surface of the housing (201). A second positioning belt (307) is connected to the outer surface of the third connecting roller (306). A support plate (308) is fixedly connected to the surface of the housing (201). Two support rods (309) are rotatably connected to the upper surface of the support plate (308) through bearings. The upper surfaces of the two support rods (309) are fixedly connected to the swing frame (301). Incomplete gears (310) are fixedly connected to the outer surfaces of the two support rods (309). The two incomplete gears (310) are meshed with each other. A first motor is installed on the lower surface of the support plate (308). 311), the output end of the first motor (311) is fixedly connected to one of the support rods (309), the marking mechanism (4) includes a fixing frame (401), a liquid storage tank (402) is fixedly connected to the outer surface of the fixing frame (401), a fixing box (403) is fixedly connected to the inner surface of the liquid storage tank (402), a water outlet hole (404) is opened on the outer surface of the fixing box (403), a limiting hole (405) is opened on the upper surface of the liquid storage tank (402), a limiting rod (406) is slidably connected to the inner surface of the limiting hole (405), a folding plate (407) is fixedly connected to the lower surface of the limiting rod (406), and a fixing plate (408) is fixedly connected to the upper surface of the limiting rod (406).A fixing rod (409) is fixedly connected to the surface of the fixing plate (408) near the top. A third positioning rod (410) is fixedly connected to the inner surface of the housing (201). A rotating plate (411) is rotatably connected to the outer surface of the third positioning rod (410). A limiting groove (412) is formed on the outer surface of the rotating plate (411). The fixing rod (409) is slidably connected to the limiting groove (412). Multiple nozzles (413) are connected to the bottom of the liquid storage tank (402). An inlet pipe (414) is connected to the outer surface of the liquid storage tank (402). A baffle (18) is fixedly connected to the outer surface of the rotating roller (209).

2. The meter-counting device for construction of building protective netting according to claim 1, characterized in that: The outer surface of the arc frame (203) is provided with a circular groove (5) and a square groove (6). A spring (7) is fixedly connected to the inner surface of the square groove (6). A connecting frame (8) is fixedly connected to the other end of the spring (7). The outer surface of the connecting frame (8) is rotatably connected to the first connecting roller (202) through a bearing. A round rod (9) is slidably connected to the inner surface of the circular groove (5). The other end of the round rod (9) is fixedly connected to the connecting frame (8).

3. The meter-counting device for construction of building protective netting according to claim 1, characterized in that: An electric slide rail (10) is fixedly connected to the inner surface of the housing (201), a sliding block (11) is slidably connected to the inner surface of the electric slide rail (10), a second positioning rod (12) is fixedly connected to the outer surface of the sliding block (11), and a long groove (13) is opened on the outer surface of the bent plate (205). The second positioning rod (12) is slidably connected to the inner surface of the long groove (13).

4. The meter-counting device for construction of building protective netting according to claim 3, characterized in that: The inner surface of the housing (201) is fixedly connected to a mounting bracket (14), the outer surface of the mounting bracket (14) is equipped with a first electric conveyor belt (15), and the inner surface of the housing (201) near the bottom is equipped with a third electric conveyor belt (16).

5. The meter-counting device for construction of building protective netting according to claim 1, characterized in that: The horizontal section of the folding plate (407) is slidably connected to the liquid storage tank (402), and the vertical section of the folding plate (407) is slidably connected to the liquid storage tank (402) and the fixed box (403) respectively. A torsion spring (21) is fixedly connected between the rotating plate (411) and the third positioning rod (410). A through hole (22) for the rotating plate (411) to pass through is provided on the outer surface of the fixed frame (401).

6. The meter-counting device for construction of building protective netting according to claim 1, characterized in that: The rotating rod (208) is fixedly connected to the code disk (23), the inner surface of the housing (201) is fixedly connected to the laser lamp (24), the inner surface of the housing (201) is fixedly connected to the connecting plate (25), the surface of the connecting plate (25) is fixedly connected to the receiver (26), the outer surface of the housing (201) is installed with the control panel (19), and the base (1) is fixedly connected to the housing (201).

7. The meter-counting device for construction of building protective netting according to claim 1, characterized in that: A second motor (27) is fixedly installed on the outer surface of the housing (201). The output end of the second motor (27) is fixedly connected to the rotating rod (208). The housing (201) is fixedly connected to the fixed frame (401). A take-up roller (17) is installed on the inner surface of the housing (201). A limit plate (20) is fixedly connected to the outer surface of the support rod (305). The limit plate (20) is movably connected to the swing frame (301).

8. A method for recording the distance during the construction of a building safety net, applied to the recording device for the construction of a building safety net as described in any one of claims 1-7, characterized in that: Includes the following steps: S1: The protective net is rolled up and stored in the winding roller (17). When in use, the initial end is pulled out and pulled upwards, and it is hung in the initial position of the second tooth (304). The second electric conveyor belt (303) is started, which drives the second tooth (304) to drive and move the rolled protective net into the device. The net edges on both sides of the protective net are sequentially clamped on the second tooth (304) and conveyed. The middle piled part is supported by the support rod (305). S2: The protective net is moved to the other end of the second electric conveyor belt (303), the first motor (311) is started, and the two support rods (309) are driven to rotate through the incomplete gear (310) transmission, so that the swing frame (301) swings, the protective net is opened horizontally, and its initial end is transported to the bottom of the first electric conveyor belt (15) for contact, and moved to the surface of the rotating roller (209). The first tooth (211) is inserted into the positioning groove, driving the two sides of the protective net to be transported synchronously and flattened. S3: For protective nets of different thicknesses, start the electric slide rail (10), the bending plate (205) drives the second connecting roller (206) to rotate, press down the first positioning belt (207), and let the first tooth (211) approach the first positioning groove (210) to ensure stable transmission of the protective net; S4: The protective net moves to the bottom of the device, the rotating roller (209) rotates one revolution, its surface baffle (18) contacts the rotating plate (411), the rotating plate (411) rotates clockwise, pushing the fixed rod (409) and other components to make the folding plate (407) move down, blocking the water outlet (404) and pressing the solution in the storage tank (402), and spraying it out from the nozzle (413) to mark the protective net, thus achieving equidistant marking; S5: Rotating rod (208) drives the code disk (23) to turn on, the laser lamp (24) turns on, the light passes through the gap of the code disk (23) and is received by the receiver (26), the circuit processes and outputs an electrical pulse signal, the instrument calculates the length of the protective net and displays it on the control panel (19), and finally, the protective net is transported out of the device by the bottom third electric conveyor belt (16).

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