Steel trestle high-altitude operation anti-falling mother rope device

Abstract

The application discloses a kind of steel trestle high-altitude operation anti-falling mother rope devices, it is related to the safety construction technical field, including steel beam, pay-off mechanism, the mother rope of being arranged in the output end of the pay-off mechanism, mobile fixing assembly being connected to the end of the mother rope and being set between the pay-off mechanism and the mobile fixing assembly guiding assembly;The application is symmetrically set by cleaning mechanism before and after mobile fixing assembly, and integrated blowing unit and mechanical scraping unit are scraped out unit.The high-pressure gas is blown away by blowing nozzle when slider moves, and the first profiled scraper of composite scraper removes stubborn impurities on the surface and side of track, and the second profiled scraper pushes impurities away to both sides, to realize the omnibearing cleaning of slide rail.The problem that slide rail is easily blocked and fails is effectively solved, and the reliability of the device in harsh construction environment is significantly improved.

Description

Technical Field

[0001] This invention relates to safe construction technology, specifically to a fall protection rope device for high-altitude operations on steel trestle bridges. Background Technology

[0002] Steel trestle bridges are temporary steel structure projects used in bridge construction. In the construction of large and medium-sized bridges, temporary steel trestle bridges are typically built to facilitate the transportation of materials, equipment, and personnel. The bridge deck of a steel trestle bridge is usually erected over water or at a high altitude, posing a risk of falls to workers operating on it. To ensure safety, fall arrest ropes (horizontal lifelines) are usually installed above or to the side of the trestle bridge. Workers use self-locking devices to suspend their safety belts from these ropes, achieving continuous protection during movement.

[0003] According to the inventor's research, the main technical solutions for fall protection rope devices for high-altitude operations on steel trestle bridges are as follows:

[0004] 1) Utility model patent CN222065140U discloses a safety device for a temporary steel trestle bridge over waterways. Addressing the problems of existing safety devices' inability to adjust the position of columns fixed to the bridge deck and the inability to quickly dismantle the columns, thus affecting work efficiency, the following solution is proposed: It includes a Bailey bridge with an internal sliding rail. An opening on one side of the Bailey bridge engages with the sliding rail. Sliding blocks are slidably connected to both sides of the sliding rail. Multiple rods are fixedly connected to the top of the Bailey bridge. Each sliding block has a fixing mechanism that engages with the rods. A main column is connected to the top of one of the two sliding blocks. This utility model features sliding blocks that, by installing columns, can be fixed to the bridge and can be quickly dismantled. The length of the main rope can be adjusted as needed, reducing preparation time.

[0005] 2) Utility model patent CN222304635U discloses a safety main rope device for the construction of a steel trestle bridge deck structure. The device includes two support mechanisms, a line winding and unwinding mechanism mounted on one of the support mechanisms, a slack mechanism mounted on the support mechanism where the line winding and unwinding mechanism is located, a limiting mechanism mounted on the other support mechanism, and a steel wire rope connected to the line winding and unwinding mechanism, the slack mechanism, and the limiting mechanism. This safety main rope device for the construction of a steel trestle bridge deck structure forms an overhead safety main rope. When workers are operating, they attach their safety belts to the steel wire rope to ensure that they do not fall if they step into a gap. The device can be disassembled and assembled according to the on-site construction progress, and the working span can be adjusted according to the winding and unwinding of the steel wire rope. It is easy to assemble and disassemble, and the working span can be easily adjusted. The device itself has high safety; when workers are operating, they attach their safety belts to the steel wire rope, which can effectively prevent falls if they step into a gap.

[0006] In the above technical solutions, the slide rail slider-type fall arresting rope device solves the problem of column position adjustment by moving the slider along the slide rail, thus realizing the adjustment of the rope hanging position; while the two-end retractable fall arresting rope device solves the problem of working span adjustment by adjusting the working length of the rope through the retractable mechanism. However, the above solutions have the following common defects:

[0007] Firstly, the adjustment method is complex and difficult to adapt to dynamic changes in the work area. In the comparative document CN222304635U, both ends of the main rope are fixed by support mechanisms. When it is necessary to change the work area, the entire device must be disassembled or the fixed points at both ends must be readjusted, which is cumbersome. In the comparative document CN222065140U, although the slider can drive the column to move along the slide rail, both ends of the main rope move with the slider, which is a synchronous adjustment mode at both ends. When the work area is concentrated in a certain section of the trestle, the main rope is still present in the non-work area, which not only wastes materials, but also causes the excessively long main rope to sag significantly due to its own weight, affecting the safety of the protection.

[0008] Secondly, the sliding rails are prone to clogging and failure, and have poor environmental adaptability. During the construction of steel trestle bridges, debris such as mud, sand, and concrete slurry can easily enter the sliding rails, causing the sliders to jam and the adjustment function to fail. Comparative document CN222065140U places the sliding rails inside the Bailey bridge without a protective structure. Its instruction manual's attached diagram shows an opening on one side of the sliding rail, through which debris can easily enter. Once the sliding rails become clogged, the entire device cannot function properly, and the internal nature of the rails makes cleaning difficult, severely impacting the device's reliability and lifespan.

[0009] In summary, the existing technology lacks a fall-prevention rope device that can both flexibly adjust the coverage area of ​​the main rope and adapt to the harsh construction environment of steel trestle bridges. Summary of the Invention

[0010] The purpose of this invention is to provide a fall protection rope device for high-altitude operations on steel trestle bridges, so as to solve the problems of cumbersome operation when adjusting the working area in the existing steel trestle bridge fall protection system and the failure of the slide rail structure due to the accumulation of debris in harsh construction environments.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a steel trestle high-altitude operation anti-fall rope device, comprising a steel beam, a line-laying mechanism, a main rope spanning the output end of the line-laying mechanism, a movable fixing component connected to the end of the main rope, and a guide component disposed between the line-laying mechanism and the movable fixing component;

[0012] The steel beams are fixedly installed on the top of both ends of the Bailey bridge, the wire laying mechanism is fixedly installed on the steel beam at one end, the movable fixed component slides linearly on the top crossbeam of the Bailey bridge, and cleaning mechanisms are symmetrically provided on the front and rear sides of the movable fixed component.

[0013] The movable fixed assembly includes a tooling plate, a slide rail, and a slider that slides horizontally along the slide rail. The tooling plate is symmetrically arranged on the top crossbeam of the Bailey bridge. The slide rail is fixed to the tooling plate. The top of the slider is provided with a bearing plate. The tops of the bearing plates on both sides jointly support a channel steel. The bottom of the channel steel is provided with a connector that is threaded to the end of the main rope.

[0014] The cleaning mechanism includes a cleaning box that moves synchronously with the slider and is located above the slide rail. The cleaning box integrates a blowing unit and a mechanical scraping unit for cleaning debris from the surface of the slide rail.

[0015] Furthermore, supports are fixedly connected to the outer sides of the bearing plates on both sides. The tooling plate has several positioning holes linearly opened along the plate body direction. When the support is inserted into any of the positioning holes through the through-hole positioning pin, the position of the slider is locked.

[0016] Furthermore, the purging unit includes purging nozzles and an air supply source. The purging nozzles are correspondingly arranged on both sides of the cleaning box, with their outlets facing the track surface of the slide rail. The cleaning box is mounted on the channel steel via a support rod. The air supply source includes a miniature air compressor and an air tank. The miniature air compressor is mounted on the channel steel, and the air tank is installed in the mounting slot of the cleaning box. The air tank is connected to the outlet of the miniature air compressor, and the outlet of the air tank is connected to the purging nozzles via an air supply pipeline. A solenoid valve is installed on the air supply pipeline between the air supply source and the purging nozzles.

[0017] Furthermore, the control terminal of the solenoid valve is linked to the movement detection switch of the slider. When the slider moves, the solenoid valve opens, and when it stops moving, the solenoid valve closes.

[0018] Furthermore, the mechanical scraping unit includes a composite scraper disposed inside the cleaning box, with its lower end extending to the outside of the cleaning box and abutting against the track surface of the slide rail. The composite scraper includes a primary contour scraper and a secondary contour scraper. The primary contour scraper is disposed at the front end of the cleaning box in the direction of travel, and its scraping surface matches the outer contour of the slide rail, used to scrape off attached debris from the surface and sides of the slide rail. The secondary contour scraper...

[0019] It is fixedly connected to the rear of the first-stage contour scraper. Its scraping surface is flat and its width is greater than that of the slide rail. It is used to push the debris scraped off by the first-stage contour scraper away to both sides of the slide rail.

[0020] Furthermore, the cleaning box is also provided with a buffer cavity, the inner wall of the buffer cavity is provided with a limiting groove, a spring and a buffer block are provided in the buffer cavity, the buffer block is slidably disposed in the limiting groove, one end of the buffer spring abuts against the inner wall of the buffer cavity, the other end abuts against the buffer block, and the bottom of the buffer block is fixedly connected to the composite scraper.

[0021] Furthermore, the wire feeding mechanism includes a loading plate, a support column, a mounting frame, a wheel drum, and a first driving component. The support column is fixedly connected to the steel beam via the loading plate. The mounting frame is fixedly disposed on the end face of the support column. The wheel drum is rotatably disposed on the mounting frame and is hollow. The first driving component is mounted on one side of the mounting frame, and its output end is connected to the wheel drum for transmission. The main rope is wound around the wheel drum, and its main rope passes through the guide roller disposed at the bottom of the mounting frame to the guide assembly.

[0022] Furthermore, the wire feeding mechanism also includes a locking assembly, which includes an L-shaped plate disposed on the other side of the mounting bracket. A horizontal plate is fixedly mounted on the inner side of the L-shaped plate. One end of the horizontal plate passes through the inside of the wheel cylinder. A second driving member is fixedly mounted on the top of the L-shaped plate. The output end of the second driving member passes through the inner side of the L-shaped plate and is connected to a drive shaft. The end of the drive shaft passes through the horizontal plate and is connected to a main bevel gear. The lower end of the horizontal plate is connected to a transmission shaft one through a bearing seat. The two ends of the transmission shaft one are respectively connected to a driven bevel gear one and a driven bevel gear two. The transmission shaft two is vertically slidably disposed on the end of the horizontal plate away from the L-shaped plate. A driven bevel gear three is disposed at the lower end of the transmission shaft two. The main bevel gear meshes with the driven bevel gear one, and the driven bevel gear two meshes with the driven bevel gear three. A compression spring is fixedly connected to the upper end of the transmission shaft two, and a locking pin is fixedly connected to the upper end of the compression spring.

[0023] Furthermore, the inner circumference of the wheel cylinder is provided with several protrusions, and the end of the locking pin away from the compression spring is provided with a chamfer that cooperates with the protrusions.

[0024] Furthermore, the guiding assembly includes a bracket, a guide sleeve, a first guide wheel, and a guide wheel assembly. The bracket is fixedly disposed below the wire feeding mechanism. The guide sleeve is disposed on the bracket for the mother rope to pass through. The first guide wheel is disposed at the bottom of the bracket to guide the direction of the mother rope. The guide wheel assembly is fixedly disposed at the bottom of the steel beam and located beside the first guide wheel.

[0025] Compared with the prior art, the anti-fall rope device for high-altitude operations on steel trestle bridges provided by the present invention has the following beneficial effects:

[0026] 1. This invention integrates a blowing unit and a mechanical scraping unit by symmetrically arranging cleaning mechanisms on the front and rear sides of a movable fixed component. When the slider moves, the blowing nozzles spray high-pressure gas to blow away floating dust, while the primary contour scraper of the composite scraper removes stubborn debris from the track surface and sides, and the secondary contour scraper pushes the debris to both sides, achieving all-around cleaning of the slide rail. Simultaneously, buffer springs and buffer blocks provide elastic cushioning for the composite scraper, allowing it to retract when encountering hard debris, avoiding rigid impact damage. This effectively solves the problem of slide rail clogging and failure, significantly improving the reliability of the device in harsh construction environments.

[0027] 2. This invention employs an asymmetrical structure with one end fixed for cable laying and the other end adjustable via a slide rail. Operators only need to operate at one end of the Bailey bridge, pulling out the positioning pin and pushing the channel steel to slide the slider along the slide rail to the target position. Then, inserting the positioning pin into the corresponding positioning hole completes the adjustment of the main rope's protective coverage area. This can be quickly completed by a single person, avoiding the cumbersome operation of simultaneous adjustment at both ends or overall disassembly and assembly required in existing technologies. This significantly improves adjustment efficiency when the working area dynamically changes, while also avoiding the self-weight deflection problem caused by excessively long main ropes in non-working areas.

[0028] 3. This invention utilizes a multi-stage bevel gear transmission system in the line-laying mechanism, combined with a locking pin structure, to control the mechanical locking of the reel. Once the main rope is adjusted to the predetermined length, the transmission chain driven by the second drive component forces the locking pin to engage with the protrusion on the inner wall of the reel, switching the reeling system from a free-rotation state to a rigid self-locking state. This mechanical hard-locking method replaces traditional friction braking, effectively preventing additional release of the main rope due to the inertial rotation of the reel when subjected to the instantaneous impact load of a fall from a height, thus shortening the free-fall distance of the person. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0030] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention;

[0031] Figure 2 This is a usage state diagram provided for an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of a structure in which one end of the mother rope device is fixed is provided for an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the structure for adjusting the movement of one end of the main rope device is provided for an embodiment of the present invention;

[0034] Figure 5 A cross-sectional view of the cleaning box is provided for an embodiment of the present invention;

[0035] Figure 6 A partial structural schematic diagram of the cleaning box is provided for an embodiment of the present invention;

[0036] Figure 7 A schematic diagram of the wire feeding mechanism is provided for embodiments of the present invention;

[0037] Figure 8 A cross-sectional view of the wire feeding mechanism is provided for an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Steel beams;

[0040] 2. Wire feeding mechanism; 201. Loading plate; 202. Support column; 203. Mounting frame; 204. Wheel cylinder; 205. First driving component; 206. L-shaped plate; 207. Second driving component; 208. Horizontal plate; 209. Drive shaft; 210. Main bevel gear; 211. Driven bevel gear one; 212. Drive shaft one; 213. Driven bevel gear two; 214. Drive shaft two; 215. Driven bevel gear three; 216. Compression spring; 217. Locking pin; 218. Protrusion; 219. Guide roller;

[0041] 3. Guide assembly; 301. Bracket; 302. Guide sleeve; 303. First guide wheel; 304. Guide wheel assembly;

[0042] 4. Mother rope;

[0043] 5. Movable fixed components; 501. Tooling plate; 502. Slide rail; 503. Slider; 504. Bearing plate; 505. Support; 506. Locating pin; 507. Locating hole; 508. Channel steel; 509. Connecting parts;

[0044] 6. Cleaning mechanism; 601. Support rod; 602. Cleaning box; 603. Air tank; 604. Miniature air compressor; 605. Air supply pipeline; 606. Blowing nozzle; 607. Buffer chamber; 608. Limiting groove; 609. Buffer spring; 610. Buffer block; 611. Composite scraper; 61101. Primary contour scraper; 61102. Secondary contour scraper. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] As attached Figure 1 To be continued Figure 8 As shown:

[0047] Example 1:

[0048] The present invention provides a steel trestle high-altitude operation anti-fall rope device, including a steel beam 1, a line laying mechanism 2, a main rope 4 spanning the output end of the line laying mechanism 2, a movable fixing component 5 connected to the end of the main rope 4, and a guide component 3 disposed between the line laying mechanism 2 and the movable fixing component 5.

[0049] Steel beam 1 is fixedly installed on the top of both ends of the Bailey bridge. Steel beam 1 is made of I-beam and is fixed across the top of both ends of the Bailey bridge as the installation base of the entire device. Wire laying mechanism 2 is fixedly installed on steel beam 1 at one end. Movable fixed component 5 slides linearly on the top crossbeam of the Bailey bridge, and cleaning mechanism 6 is symmetrically provided on the front and rear sides of the movable fixed component 5.

[0050] The movable fixed component 5 includes a tooling plate 501, a slide rail 502, and a slider 503 that slides horizontally along the slide rail 502. The tooling plate 501 is symmetrically arranged on the top crossbeam of the Bailey bridge. The slide rail 502 is fixed on the tooling plate 501. The top of the slider 503 is provided with a bearing plate 504. The tops of the two bearing plates 504 together support the channel steel 508. The bottom of the channel steel 508 is provided with a connector 509 that is threaded to the end of the mother rope 4.

[0051] The cleaning mechanism 6 includes a cleaning box 602 that moves synchronously with the slider 503 and is located above the slide rail 502. The cleaning box 602 integrates a blowing unit and a mechanical scraping unit for cleaning debris from the surface of the slide rail 502.

[0052] In one embodiment of the present invention, supports 505 are fixedly connected to the outer sides of both bearing plates 504. A plurality of positioning holes 507 are linearly formed along the plate direction of the tooling plate 501. When a positioning pin 506 is inserted into any positioning hole 507 through the support 505, the position of the slider 503 is locked. Specifically, the support 505 is a Z-shaped plate, its top section is fixed to the outer side of the bearing plate 504 by bolts, and its horizontal section extends towards the tooling plate 501. A through hole for the positioning pin 506 to pass through is formed on the horizontal section. The positioning holes 507 are circular holes, equidistantly arranged along the length of the tooling plate 501. The spacing between adjacent positioning holes 507 is set according to the accuracy requirements of the working area adjustment. When it is necessary to move the slider 503, the positioning pin 506 is pulled upwards, causing its lower end to disengage from the positioning hole 507, allowing the slider 503 to slide. After sliding into position, the positioning pin 506 is inserted into the corresponding positioning hole 507 to complete the locking.

[0053] In one embodiment of the present invention, a return spring (not shown in the figure) is sleeved on the positioning pin 506. One end of the return spring abuts against the support 505 and the other end abuts against the handle of the positioning pin 506, which is used to push the positioning pin 506 in the direction of insertion into the positioning hole 507 at all times, so as to prevent the positioning pin 506 from accidentally coming out due to construction vibration.

[0054] In one embodiment of the present invention, the end of the mother rope 4 is provided with a tightening device, which has an external thread and is screwed into the internal thread of the connector 509.

[0055] In one embodiment of the present invention, limit blocks (not shown in the figure) are respectively provided at both ends of the slide rail 502. The limit blocks are fixed on the tooling plate 501 to limit the extreme sliding position of the slider 503 and prevent the slider 503 from falling off the end of the slide rail 502.

[0056] Working Principle: In this embodiment, when it is necessary to adjust the protective coverage of the main rope 4, the operator first pulls out the positioning pin 506 to release the lock between the support 505 and the tooling plate 501. Then, the operator pushes the channel steel 508 to make the slider 503 slide horizontally along the slide rail 502 to the target position. After it is in place, the positioning pin 506 is inserted into the corresponding positioning hole 507 to lock the position of the slider 503. During this process, the main rope 4 moves synchronously with the movable fixing component 5, and the wire release mechanism 2 cooperates to release or reel in the main rope 4, realizing a single-end rapid adjustment of the protective coverage of the main rope 4. At the same time, the cleaning mechanism 6, which is set on the front and rear sides of the movable fixing component 5, moves synchronously with the slider 503 to clean the surface of the slide rail 502 in real time, preventing debris from entering and causing sliding jamming.

[0057] Example 2:

[0058] This embodiment is basically the same as the previous embodiment, except that the purging unit includes a purging nozzle 606 and an air supply source. The purging nozzle 606 is correspondingly arranged on both sides of the cleaning box 602, with its outlet facing the track surface of the slide rail 502. The cleaning box 602 is mounted on the channel steel 508 by a support rod 601. The air supply source includes a miniature air compressor 604 and an air storage tank 603. The miniature air compressor 604 is mounted on the channel steel 508, and the air storage tank 603 is installed in the mounting slot of the cleaning box 602. The air storage tank 603 is used to store the high-pressure gas generated by the miniature air compressor 604 and plays a role in stabilizing the air pressure. The air storage tank 603 is connected to the outlet of the miniature air compressor 604, and the outlet of the air storage tank 603 is connected to the purging nozzle 606 through an air supply pipeline 605. An electromagnetic valve is provided on the air supply pipeline 605 between the air supply source and the purging nozzle 606.

[0059] In one embodiment of the present invention, a rubber shock-absorbing pad (not shown in the figure) is provided in the mounting groove of the cleaning box 602, and the air tank 603 is fixed in the mounting groove by a stainless steel cable tie. The rubber shock-absorbing pad is provided between the air tank 603 and the mounting groove to absorb vibration during construction and prevent the air tank 603 from loosening or being damaged due to vibration.

[0060] In one embodiment of the present invention, the control terminal of the solenoid valve is linked to the movement detection switch of the slider 503. When the slider 503 moves, the solenoid valve opens; when it stops moving, the solenoid valve closes. The movement detection switch is installed on the movable fixed component 5 and is used to detect whether the slider 503 is in a moving state. This switch can be a micro switch, a photoelectric sensor, or a Hall sensor. The solenoid valve is a normally closed solenoid valve. When the movement detection switch or the power supply system fails, the solenoid valve automatically closes, and the purging stops. Specifically, when the slider 503 starts to move, the movement detection switch detects the movement signal and outputs a control signal to open the solenoid valve, thus opening the air supply line 605. Compressed air is delivered from the air tank 603 through the air supply line 605 to the purging nozzle 606, and is ejected at high speed from the outlet of the purging nozzle 606, forming a high-pressure air curtain that directly impacts the track surface of the slide rail 502, blowing away dust, sand, cement slurry, and other debris adhering to the track surface. When slider 503 stops moving, the signal from the movement detection switch disappears, the solenoid valve closes, the air supply line 605 is cut off, and purging stops. This linkage control enables automatic purging—purging occurs as soon as the slider moves and stops as soon as it stops—avoiding the waste of compressed air.

[0061] In one embodiment of the present invention, the mechanical scraping unit includes a composite scraper 611, which is disposed inside the cleaning box 602. Its lower end extends to the outside of the cleaning box 602 and abuts against the track surface of the slide rail 502. The composite scraper 611 includes a primary contour scraper 61101 and a secondary contour scraper 61102. The primary contour scraper 61101 is disposed at the front end of the cleaning box 602 in the traveling direction, and its scraping surface matches the outer contour of the slide rail 502. It is used to scrape off the attached debris on the track surface and sides of the slide rail 502. The secondary contour scraper 61102 is fixedly connected to the rear of the primary contour scraper 61101. Its scraping surface is flat and its width is greater than the width of the slide rail. It is used to push the debris scraped off by the primary contour scraper 61101 away to both sides of the slide rail 502. Specifically, the primary contour scraper 61101 is located at the front end of the cleaning box 602 in the direction of travel. Its scraping surface is designed to mimic the cross-sectional shape of the slide rail 502. That is, the scraping surface is provided with grooves that match the top flange of the slide rail 502 and side wings that match the guide surfaces on both sides of the slide rail 502. This allows the primary contour scraper 61101 to contact the top surface and two sides of the slide rail 502 simultaneously, achieving all-round scraping. The secondary contour scraper 61102 is located behind the primary contour scraper 61101, and the two are integrally formed. The scraping surface of the secondary contour scraper 61102 is flat, and its width is greater than the maximum width of the slide rail 502. Therefore, when the composite scraper 611 moves with the cleaning box 602, the bottom edge of the secondary contour scraper 61102 can push the debris scraped off the track surface by the primary contour scraper 61101 to the sides of the slide rail 502, preventing the debris from accumulating on the track surface.

[0062] In one embodiment of the present invention, the cleaning box 602 is further provided with a buffer cavity 607. A limiting groove 608 is formed in the inner wall of the buffer cavity 607. A buffer spring 609 and a buffer block 610 are disposed within the buffer cavity 607. The buffer block 610 is slidably disposed within the limiting groove 608. One end of the buffer spring 609 abuts against the inner wall of the buffer cavity 607, and the other end abuts against the buffer block 610. The bottom of the buffer block 610 is fixedly connected to the composite scraper 611. Specifically, during normal cleaning, the elastic force of the buffer spring 609 pushes the buffer block 610 forward, keeping the composite scraper 611 at the front end of the buffer block 610 in contact with the track surface of the slide rail 502. The composite scraper 611 scrapes away debris from the track surface as the movable fixing component 5 moves. When the composite scraper 611 encounters a protruding hard object during its movement, it experiences a rearward reaction force from the object. This reaction force pushes the buffer block 610 to overcome the elastic force of the buffer spring 609 and slide backward along the limiting groove 608. The composite scraper 611 then elastically retracts, buffering the rigid impact between the composite scraper 611 and the hard object, preventing the scraper 611 from chipping or being damaged due to excessive instantaneous impact force. Simultaneously, because the buffer spring 609 remains compressed and continues to apply a forward elastic force to the buffer block 610, the composite scraper 611 maintains contact with the hard object and applies a forward scraping force while retracting backward, continuing to scrape away the hard object. Once the hard object is scraped away, the rearward reaction force disappears, and the elastic force of the buffer spring 609 pushes the buffer block 610 forward to reset, continuing the subsequent scraping and cleaning operation.

[0063] Working principle: When the operator pushes the movable fixed component 5, the movement detection switch detects the movement signal of the slider 503, the solenoid valve opens, and the compressed air generated by the micro air compressor 604 is stabilized by the air tank 603 and then delivered to the blowing nozzle 606 through the air supply pipeline 605. High-pressure gas is sprayed from both sides of the cleaning box 602 onto the track surface of the slide rail 502, blowing away the floating dust, sand and other light debris attached to the track surface.

[0064] Simultaneously, the composite scraper 611 moves synchronously with the cleaning box 602. The primary contour scraper 61101, using its scraping surface that matches the outer contour of the slide rail 502, simultaneously contacts the top surface and two sides of the slide rail 502 to scrape away stubborn debris such as cement slurry and dried mud adhering to the surface and sides of the track. During the scraping process, the primary contour scraper 61101 scoops up the debris from the track surface and pushes it forward. When the scooped-up debris reaches the secondary contour scraper 61102, the secondary contour scraper 61102, with its flat scraping surface wider than the slide rail 502, pushes the debris away from both sides of the slide rail 502, preventing the debris from re-accumulating on the track surface or being carried into the mating gap between the slider 503 and the slide rail 502.

[0065] Example 3:

[0066] This embodiment is basically the same as the previous embodiment, except that the wire feeding mechanism 2 includes a loading plate 201, a support column 202, a mounting frame 203, a wheel 204, and a first driving component 205. The support column 202 is fixedly connected to the steel beam 1 through the loading plate 201. The mounting frame 203 is fixedly set on the end face of the support column 202. The wheel 204 is rotatably set on the mounting frame 203 and is hollow. The first driving component 205 is installed on one side of the mounting frame 203, and its output end is connected to the wheel 204 for transmission. The main rope 4 is wound on the wheel 204 and passes through the guide roller 219 set at the bottom of the mounting frame 203 to the guide assembly 3.

[0067] In one embodiment of the present invention, the wire feeding mechanism 2 further includes a locking assembly, which includes an L-shaped plate 206 disposed on the other side of the mounting bracket 203. A horizontal plate 208 is horizontally fixed inside the L-shaped plate 206. One end of the horizontal plate 208 extends into the inside of the wheel cylinder 204. A second driving member 207 is fixedly mounted on the top of the L-shaped plate 206. The output end of the second driving member 207 extends through the inside of the L-shaped plate 206 and is connected to a drive shaft 209. The end of the drive shaft 209 passes through the horizontal plate 208 and is connected to a main bevel gear 210. The lower end of the horizontal plate 208 is connected to a transmission shaft 212 via a bearing seat. Both ends of the transmission shaft 212 are respectively connected to a driven bevel gear 211 and a driven bevel gear 212. A second bevel gear 213 is attached to a second drive shaft 214 that slides vertically on the end of the horizontal plate 208 away from the L-shaped plate 206. A third bevel gear 215 is attached to the lower end of the second drive shaft 214. The main bevel gear 210 meshes with the first bevel gear 211, and the second bevel gear 213 meshes with the third bevel gear 215. A compression spring 216 is fixedly connected to the upper end of the second drive shaft 214, and a locking pin 217 is fixedly connected to the upper end of the compression spring 216. The compression spring 216 is designed to provide a preload between the inside of the wheel cylinder 204 and the locking pin 217 during the rotation of the wheel cylinder 204 in an unlocked state, thus preventing the wheel cylinder 204 from being locked.

[0068] The inner circumference of the wheel cylinder 204 is provided with several protrusions 218, and the end of the locking pin 217 away from the compression spring 216 is provided with a chamfer that cooperates with the protrusions 218.

[0069] Specifically, when it is necessary to lock the wheel 204 to prevent the main rope 4 from accidentally coming loose, the second drive member 207 drives the drive shaft 209 to rotate. Through the transmission of the main bevel gear 210, the first bevel gear 211, the first drive shaft 212, the second bevel gear 213, and the third bevel gear 215, the second drive shaft 214 is driven to rotate. The rotation of the second drive shaft 214 causes the locking pin 217 to rotate synchronously around its axis. When the locking pin 217 rotates clockwise by a certain angle, such as 180°, the chamfer at the upper end of the locking pin 217 rotates to a position corresponding to the protrusion 218 on the inner wall of the wheel 204. The chamfered surface contacts the protrusion 218 and weds into the tooth groove between adjacent protrusions 218, thereby locking the rotation of the wheel 204 and preventing the wheel 204 from rotating.

[0070] When it is necessary to release the lock, the second drive component 207 rotates in the opposite direction, driving the second drive shaft 214 to rotate in the opposite direction through the same gear transmission mechanism. The locking pin 217 then rotates counterclockwise by the same angle, such as 180°. At this time, the chamfer at the upper end of the locking pin 217 rotates to a position that is misaligned with the protrusion 218, and the locking pin 217 and the protrusion 218 are no longer in contact. The wheel drum 204 returns to a free rotation state, and the main rope 4 can be released or wound normally.

[0071] In one embodiment of the present invention, the guide assembly 3 includes a bracket 301, a guide sleeve 302, a first guide wheel 303, and a guide wheel assembly 304. The bracket 301 is fixedly disposed below the wire feeding mechanism 2. The guide sleeve 302 is disposed on the bracket 301 for the mother rope 4 to pass through. The first guide wheel 303 is disposed at the bottom of the bracket 301 to guide the direction of the mother rope 4. The guide wheel assembly 304 is fixedly disposed at the bottom of the steel beam 1 and located beside the first guide wheel 303. Through the cooperation of the guide sleeve 302, the first guide wheel 303, and the guide wheel assembly 304, the mother rope 4 can smoothly extend to the movable fixed assembly 5 along a preset path after being drawn out from the wire feeding mechanism 2, avoiding friction and interference between the mother rope 4 and other structural components.

[0072] Working principle: During the wire laying operation, the first drive component 205 drives the drum 204 to rotate, releasing or winding the main rope 4. After being led out from the drum 204, the main rope 4 passes through the guide roller 219, the guide sleeve 302, around the first guide wheel 303 and the guide wheel group 304, and finally extends to the connector 509 of the movable fixed component 5. When the movable fixed component 5 moves away from the wire laying mechanism 2, the first drive component 205 drives the drum 204 to rotate forward to release the main rope 4; when the movable fixed component 5 moves towards the wire laying mechanism 2, the first drive component 205 drives the drum 204 to rotate in the opposite direction to wind up the main rope 4, realizing the automatic release and winding of the main rope 4.

[0073] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fall protection rope device for high-altitude operations on steel trestle bridges, characterized in that, It includes a steel beam (1), a wire feeding mechanism (2), a main rope (4) spanning the output end of the wire feeding mechanism (2), a movable fixing component (5) connected to the end of the main rope (4), and a guide component (3) disposed between the wire feeding mechanism (2) and the movable fixing component (5). The steel beam (1) is fixedly installed on the top of both ends of the Bailey bridge, the wire laying mechanism (2) is fixedly installed on the steel beam (1) at one end, the movable fixing component (5) slides linearly on the top crossbeam of the Bailey bridge, and the front and rear sides of the movable fixing component (5) are symmetrically provided with cleaning mechanisms (6). The movable fixed component (5) includes a tooling plate (501), a slide rail (502), and a slider (503) that slides horizontally along the slide rail (502). The tooling plate (501) is symmetrically arranged on the top crossbeam of the Bailey bridge. The slide rail (502) is fixed on the tooling plate (501). The top of the slider (503) is provided with a bearing plate (504). The tops of the bearing plates (504) on both sides jointly support a channel steel (508). The bottom of the channel steel (508) is provided with a connector (509) that is threaded to the end of the mother rope (4). The cleaning mechanism (6) includes a cleaning box (602) that moves synchronously with the slider (503) and is located above the slide rail (502). The cleaning box (602) integrates a blowing unit and a mechanical scraping unit for cleaning debris from the surface of the slide rail (502).

2. The anti-fall rope device for high-altitude operations on steel trestle bridges according to claim 1, characterized in that, Supports (505) are fixedly connected to the outer sides of the bearing plates (504) on both sides. The tooling plate (501) has a number of positioning holes (507) linearly opened along the plate body direction. When the support (505) is inserted into any of the positioning holes (507) through the through-hole positioning pin (506), the position of the slider (503) is locked.

3. The anti-fall rope device for high-altitude operations on steel trestle bridges according to claim 1, characterized in that, The purging unit includes a purging nozzle (606) and an air supply source. The purging nozzle (606) is correspondingly arranged on both sides of the cleaning box (602), with its outlet facing the track surface of the slide rail (502). The cleaning box (602) is mounted on the channel steel (508) by a support rod (601). The air supply source includes a miniature air compressor (604) and an air tank (603). The miniature air compressor (604) is mounted on the channel steel (508), and the air tank (603) is installed on the mounting groove of the cleaning box (602). The air tank (603) is connected to the outlet of the miniature air compressor (604), and the outlet of the air tank (603) is connected to the purging nozzle (606) through an air supply pipeline (605). A solenoid valve is provided on the air supply pipeline (605) between the air supply source and the purging nozzle (606).

4. The anti-fall rope device for high-altitude operations on steel trestle bridges according to claim 3, characterized in that, The control terminal of the solenoid valve is linked to the movement detection switch of the slider (503). When the slider (503) moves, the solenoid valve opens and when it stops moving, the solenoid valve closes.

5. A fall protection rope device for high-altitude operations on steel trestle bridges according to claim 1, characterized in that, The mechanical scraping unit includes a composite scraper (611), which is disposed inside the cleaning box (602). Its lower end extends to the outside of the cleaning box (602) and abuts against the track surface of the slide rail (502). The composite scraper (611) includes a primary contour scraper (61101) and a secondary contour scraper (61102). The primary contour scraper (61101) is disposed at the front end of the cleaning box (602) in the traveling direction, and its scraping surface matches the outer contour of the slide rail (502) to scrape off the attached debris on the track surface and sides of the slide rail (502). The secondary contour scraper (61102) It is fixedly connected to the rear of the first-stage contour scraper (61101), and its scraping surface is flat and wider than the width of the slide rail. It is used to push the debris scraped off by the first-stage contour scraper (61101) away to both sides of the slide rail (502).

6. A fall protection rope device for high-altitude operations on steel trestle bridges according to claim 5, characterized in that, The cleaning box (602) is also provided with a buffer cavity (607). A limiting groove (608) is opened in the inner wall of the buffer cavity (607). A buffer spring (609) and a buffer block (610) are provided in the buffer cavity (607). The buffer block (610) is slidably disposed in the limiting groove (608). One end of the buffer spring (609) abuts against the inner wall of the buffer cavity (607), and the other end abuts against the buffer block (610). The bottom of the buffer block (610) is fixedly connected to the composite scraper (611).

7. A fall protection rope device for high-altitude operations on steel trestle bridges according to claim 1, characterized in that, The wire feeding mechanism (2) includes a loading plate (201), a support column (202), a mounting frame (203), a wheel cylinder (204), and a first driving component (205). The support column (202) is fixedly connected to the steel beam (1) through the loading plate (201). The mounting frame (203) is fixedly set on the end face of the support column (202). The wheel cylinder (204) is rotatably set on the mounting frame (203) and is hollow. The first driving component (205) is installed on one side of the mounting frame (203) and its output end is connected to the wheel cylinder (204) for transmission. The main rope (4) is wound on the wheel cylinder (204) and its main rope (4) passes through the guide roller (219) set at the bottom of the mounting frame (203) to the guide assembly (3).

8. A fall protection rope device for high-altitude operations on steel trestle bridges according to claim 7, characterized in that, The wire feeding mechanism (2) further includes a locking assembly, which includes an L-shaped plate (206) disposed on the other side of the mounting bracket (203). A horizontal plate (208) is fixedly mounted on the inner side of the L-shaped plate (206). One end of the horizontal plate (208) passes through the inside of the wheel cylinder (204). A second driving member (207) is fixedly mounted on the top of the L-shaped plate (206). The output end of the second driving member (207) passes through the inner side of the L-shaped plate (206) and is connected to a drive shaft (209). The end of the drive shaft (209) passes through the horizontal plate (208) and is connected to a main bevel gear (210). The lower end of the horizontal plate (208) is connected to a transmission via a bearing seat. A drive shaft (212) is connected to two ends of a first bevel gear (211) and a second bevel gear (213) respectively. A drive shaft (214) is vertically slidably mounted on the end of the horizontal plate (208) away from the L-shaped plate (206). A third bevel gear (215) is mounted on the lower end of the drive shaft (214). The main bevel gear (210) meshes with the first bevel gear (211), and the second bevel gear (213) meshes with the third bevel gear (215). A compression spring (216) is fixedly connected to the upper end of the drive shaft (214), and a locking pin (217) is fixedly connected to the upper end of the compression spring (216).

9. A fall protection rope device for high-altitude operations on steel trestle bridges according to claim 8, characterized in that, The inner circumference of the wheel cylinder (204) is provided with several protrusions (218), and the locking pin (217) is provided with a chamfer at the end away from the compression spring (216) to cooperate with the protrusions (218).

10. A fall protection rope device for high-altitude operations on a steel trestle bridge according to claim 1, characterized in that, The guiding component (3) includes a bracket (301), a guide sleeve (302), a first guide wheel (303), and a guide wheel assembly (304). The bracket (301) is fixedly disposed below the wire feeding mechanism (2). The guide sleeve (302) is disposed on the bracket (301) for the mother rope (4) to pass through. The first guide wheel (303) is disposed at the bottom of the bracket (301) to guide the direction of the mother rope (4). The guide wheel assembly (304) is fixedly disposed at the bottom of the steel beam (1) and located beside the first guide wheel (303).

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