Safety protection device for hoisting arch bridge cable
By emitting a linear laser from below the cable-stayed hoisting equipment, combined with an adjustable extension rod and warning frame, the problems of difficult observation and safety hazards during cable-stayed hoisting of arch bridges were solved, achieving safe and efficient hoisting operations.
Patent Information
- Application Number
- CN202520077081.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-14
AI Technical Summary
During the cable hoisting process of the arch bridge, it is difficult for ground personnel to observe the height and position of the cable hoisting equipment, which requires them to stay a long distance away, increases the physical exertion of personnel, and the high height of the hoisting equipment makes it difficult for personnel to observe, thus posing a safety hazard.
A linear laser is used to emit a laser beam below the cable hoisting equipment. The laser range is adjusted by a central extension rod and a protective warning frame to ensure that personnel are at a safe distance. The angle and length are adjusted by a motor drive to achieve safety protection.
Effective planning of the hoisting and lowering range reduces the need for personnel to walk long distances, improves safety, adapts to hoisting needs in different locations, prevents rain impact, and ensures normal equipment operation.
Smart Images
Figure CN223620050U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hoisting equipment technology, and in particular to a safety protection device for cable hoisting of arch bridges. Background Technology
[0002] Cable-stayed arch bridge construction is a method of arch bridge construction. Cable-stayed arch bridge construction uses cable hoisting equipment to transport and install prefabricated arch bridge components such as arch boxes and arch slabs. The transport equipment moves the arch bridge components to the cable hoisting equipment, and the lifting cables and traction cables lift the arch bridge components to the bridge span to be assembled for installation.
[0003] During the hoisting of arch bridge components by cable-stayed elevators, the cable-stayed elevators are even higher than the arch bridge itself due to the high height of the arch bridge. Each hoisting operation involves a long span, and it is strictly forbidden for personnel to stand below the cable-stayed elevators during the lifting process. Because of the height of the cable-stayed elevators, it is difficult for ground personnel to observe the position of the overhead hoisting equipment. During the hoisting process, ground personnel need to stay a considerable distance away and only approach after the cable-stayed elevators have been lowered, resulting in a long walking distance for personnel each time and increasing their physical exertion. Summary of the Invention
[0004] This disclosure relates to a safety protection device for cable hoisting of arch bridges. A linear laser emits a straight laser beam below the cable hoisting equipment. The linear laser beam of the linear laser beam enables the planning of the lifting and lowering range of the cable hoisting equipment, ensuring that personnel are outside the lifting and lowering range of the cable hoisting equipment, thus achieving safety protection during the lifting and lowering process and eliminating the need for personnel to walk long distances to avoid obstacles during each hoisting operation.
[0005] In a first aspect, this disclosure provides a safety protection device for cable hoisting of an arch bridge, specifically including: a main fixing frame, a middle extension rod, and a protective warning frame. The middle extension rod is provided on the outer side of the main fixing frame, and a protective warning frame is provided on one side of the tail end of the middle extension rod. Side connecting rotating frames are symmetrically provided on both sides of the middle part of the main fixing frame. A first worm gear is rotatably provided on the outer side of the side connecting rotating frame in a circumferential direction. Bolt holes are provided through the upper and lower parts of the main fixing frame.
[0006] In at least some embodiments, a first worm gear shaft is fixedly provided at the first end of the middle extension rod, threaded holes are provided in an array at intervals on the side of the middle extension rod, an outer extension rod is slidably connected to the tail section of the middle extension rod, a positioning screw is screwed to the outer side of the first end of the outer extension rod, a second worm gear is rotatably provided on the outer side of the tail section of the middle extension rod, and a linear laser emits a straight laser beam below the cable hoisting equipment.
[0007] In at least some embodiments, the first worm gear shaft at the beginning of the middle extension rod and the side connecting frame are circumferentially rotatably connected, and the positioning screw at the beginning of the outer extension rod is simultaneously screwed into the upper threaded hole of the middle extension rod.
[0008] In at least some embodiments, a central laser is fixedly installed in the middle of the protective warning frame, an outer protective cover is fixedly installed on the lower part of the central laser, and a second worm gear shaft is fixedly installed in the middle of the protective warning frame.
[0009] In at least some embodiments, the second worm gear shaft and the tail end of the outer extension rod are circumferentially rotatably connected, the outer tooth block of the second worm gear shaft is meshed with the helical teeth of the second worm, the meshing of the second worm drives the second worm gear shaft to rotate, and the second worm gear shaft and the protective warning frame rotate synchronously.
[0010] In at least some embodiments, the first worm gear shaft and the side connecting frame are circumferentially rotatably connected, the outer tooth block of the first worm gear shaft and the helical teeth of the first worm are meshed, the first worm meshes and drives the first worm gear shaft to rotate, and the first worm gear shaft, the middle extension rod and the outer extension rod rotate synchronously to adjust the tilt angle.
[0011] In at least some embodiments, the outer protective cover is a flared structure that is narrow at the top and wide at the bottom, and the outer protective cover surrounds the outside of the laser.
[0012] This utility model provides a safety protection device for cable hoisting of arch bridges, which has the following beneficial effects:
[0013] The linear laser emits a straight laser beam below the cable hoisting equipment. This linear laser beam allows for the planning of the lifting and lowering range of the cable hoisting equipment, ensuring that personnel are outside the lifting and lowering range and providing safety protection during the hoisting process, thus eliminating the need for personnel to walk long distances.
[0014] The length of the middle extension rod and the outer extension rod can be adjusted to adjust the distance between the central laser and the cable hoisting equipment, adapting to the use of the central laser in the length and width of the cable hoisting equipment. The central extension rod and the protective warning frame can both be tilted to adjust their direction, further expanding the warning and protection range. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.
[0017] In the attached diagram:
[0018] Figure 1A schematic diagram of the overall structure of this application is shown;
[0019] Figure 2 A schematic diagram of the main fixing frame structure of this application is shown;
[0020] Figure 3 A schematic diagram of the extension rod structure of this application is shown;
[0021] Figure 4 A schematic diagram of the protective warning frame structure of this application is shown;
[0022] Figure 5 A schematic diagram of the structure of the outer protective cover of this application is shown;
[0023] Figure 6 A schematic diagram of the structure in the split state of this application is shown;
[0024] List of reference numerals
[0025] 1. Main fixing frame; 101. Side connecting rotating frame; 102. First worm gear; 103. Bolt hole;
[0026] 2. Middle extension rod; 201. First worm gear shaft; 202. Upper threaded hole; 203. Outer extension rod; 204. Positioning screw; 205. Second worm gear;
[0027] 3. Protective warning frame; 301. One-line laser; 302. Outer protective cover; 303. Second worm gear shaft. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0029] Example 1: Please refer to Figures 1 to 6 :
[0030] This utility model proposes a safety protection device for cable hoisting of arch bridges, comprising: a main fixing frame 1, a middle extension rod 2, and a protective warning frame 3. Side connecting rotating frames 101 are symmetrically arranged on both sides of the middle portion of the main fixing frame 1. A first worm gear 102 is rotatably arranged circumferentially on the outer side of the side connecting rotating frame 101. Bolt holes 103 are provided through the upper and lower portions of the main fixing frame 1. The middle extension rod 2 is arranged on the outer side of the main fixing frame 1. A first worm gear shaft 201 is fixedly installed at the first end of the middle extension rod 2. Upper threaded holes 202 are arranged in an array at intervals on the side of the middle extension rod 2. An outer extension rod 203 is slidably connected to the tail section of the middle extension rod 2. A positioning screw is screwed onto the outer side of the first end of the outer extension rod 203. The first worm gear shaft 201 at the beginning of the middle extension rod 2 and the side connecting frame 101 are circumferentially rotatably connected. The positioning screw 204 at the beginning of the outer extension rod 203 is simultaneously screwed into the upper threaded hole 202 of the middle extension rod 2. A second worm gear 205 is rotatably provided on the outer side of the tail section of the middle extension rod 2. The straight laser 301 emits a straight laser below the cable hoisting equipment. The straight laser of the straight laser 301 realizes the planning of the lifting and lowering range of the cable hoisting equipment. After the personnel see the laser line on the ground, it is easy to quickly determine and move the personnel's standing position, realize the safety protection of personnel during the lifting and lowering process, and ensure that the personnel are outside the lifting and lowering range of the cable hoisting equipment.
[0031] A protective warning frame 3 is provided on one side of the tail end of the extension rod 2. A central laser 301 is fixedly installed in the middle of the protective warning frame 3. An outer protective cover 302 is fixedly installed on the lower part of the central laser 301. A second worm gear shaft 303 is fixedly installed in the middle of the protective warning frame 3. The second worm gear shaft 303 and the tail end of the extension rod 203 are circumferentially rotatably connected. The outer tooth block of the second worm gear shaft 303 is meshed with the helical teeth of the second worm 205. The meshing of the second worm 205 drives the second worm gear shaft 303 to rotate. The second worm gear shaft 303 and the protective warning frame 3 rotate synchronously, and the protective warning frame 3 can adjust the tilt angle.
[0032] In this embodiment, the first worm gear shaft 201 and the side connecting frame 101 are circumferentially rotatably connected. The outer tooth block of the first worm gear shaft 201 is meshed with the helical teeth of the first worm 102. The meshing of the first worm 102 drives the first worm gear shaft 201 to rotate. The first worm gear shaft 201, the middle extension rod 2, and the outer extension rod 203 rotate synchronously to adjust the tilt angle.
[0033] In this embodiment, the outer protective cover 302 is a flared structure that is narrow at the top and wide at the bottom. The outer protective cover 302 surrounds the outside of the center laser 301 and provides rain protection for the center laser 301 to prevent it from being washed by rainwater.
[0034] In Example 2, based on Example 1, both the first worm gear 102 and the second worm gear 205 are equipped with motors to drive rotation, thereby realizing the electric adjustment of the angles of the middle extension rod 2 and the protective warning frame 3. The middle extension rod 2 is equipped with an electric lead screw to drive the displacement and extension of the outer extension rod 203, thereby realizing the extension and extension adjustment between the middle extension rod 2 and the outer extension rod 203, eliminating the burden of manual adjustment by personnel.
[0035] The working principle of this embodiment is as follows: The main fixed frame 1 is connected and fixed to the lifting device of the cable hoisting equipment through the bolt holes 103. The straight laser 301 is a laser device that emits a straight line. The straight laser 301 emits a straight line laser below the cable hoisting equipment. The straight laser of the straight laser 301 realizes the planning of the lifting range of the cable hoisting equipment. After the personnel see the laser line on the ground, it is easy to quickly determine and move the personnel's standing position, ensuring that the personnel are outside the lifting range of the cable hoisting equipment, realizing safety protection during the lifting process. The main fixed frame 1 can also be set with one on each of the four sides of the lifting device of the cable hoisting equipment. The four straight lasers 301 of the main fixed frame 1 plan and illuminate the rectangular space, warning the surrounding personnel and avoiding the personnel being in the rectangular space, thus avoiding the need for personnel to walk long distances.
[0036] By separating the positioning screw 204 from the upper threaded hole 202, the middle extension rod 2 and the outer extension rod 203 move to adjust their length. Then, by screwing the positioning screw 204 into the upper threaded hole 202, the position of the middle extension rod 2 and the outer extension rod 203 is fixed. The middle extension rod 2 and the outer extension rod 203 can then extend and retract to adjust their length, adjusting the distance between the central laser 301 and the cable hoisting equipment, adapting to the use of the central laser 301 in various positions such as length and width of the cable hoisting equipment. The first worm gear 102 engages and drives the first worm wheel shaft 201 to rotate. The first worm wheel shaft 201, the middle extension rod 2, and the outer extension rod 203 rotate synchronously. The second worm gear 205 engages and drives the second worm wheel shaft 205 to rotate. The rotating shaft 303 rotates, and the second worm gear shaft 303 and the protective warning frame 3 rotate synchronously. The middle extension rod 2 and the protective warning frame 3 adjust their tilt angles. The protective warning frame 3 tilts upward as the tail end of the outer extension rod 203 moves upward. The lower end of the central laser 301 tilts outward. The outward tilt of the central laser 301 can expand the laser illumination range, thereby expanding the illumination warning protection range. The outer protective cover 302 surrounds and protects the lower lamp head of the central laser 301. The outer protective cover 302 can prevent water droplets from accumulating at the lower end of the central laser 301 during rain, reducing the impact of water flow on the lower lamp head of the central laser 301 and preventing water accumulation and short circuit.
[0037] The following points should be noted in this article:
[0038] 1. The accompanying drawings of the embodiments disclosed herein only involve structures relevant to the embodiments disclosed herein; other structures may refer to general designs.
[0039] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0040] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. A safety protection device for cable hoisting of arch bridges, comprising: The main fixing frame (1), the middle extension rod (2) and the protective warning frame (3) are characterized in that the middle extension rod (2) is provided on the outer side of the main fixing frame (1), the protective warning frame (3) is provided on one side of the tail end of the middle extension rod (2), the middle one-character laser (301) is fixedly provided in the middle of the protective warning frame (3), the lower part of the middle one-character laser (301) is fixedly provided with an outer protective cover (302), and the middle of the protective warning frame (3) is fixedly provided with a second worm gear shaft (303).
2. The safety protection device for cable hoisting of an arch bridge according to claim 1, characterized in that, The main fixing frame (1) has symmetrical side connecting frames (101) on both sides of the middle part. The side connecting frames (101) have a first worm gear (102) rotatably arranged on the outer side of the circumferential direction. The main fixing frame (1) has bolt holes (103) through the upper and lower parts.
3. The safety protection device for cable hoisting of an arch bridge according to claim 2, characterized in that, The first worm gear shaft (201) is fixedly provided at the first end of the middle extension rod (2), and the upper threaded holes (202) are arranged in an array at intervals on the side of the middle extension rod (2). The tail section of the middle extension rod (2) is slidably connected to the outer extension rod (203). The outer end of the first end of the outer extension rod (203) is screwed with a positioning screw (204), and the tail section of the middle extension rod (2) is rotatably provided with a second worm (205).
4. The safety protection device for cable hoisting of an arch bridge according to claim 3, characterized in that, The first worm gear shaft (201) at the head end of the middle extension rod (2) and the side connecting frame (101) are circumferentially rotatably connected, and the positioning screw (204) at the head end of the outer extension rod (203) is simultaneously screwed into the upper threaded hole (202) of the middle extension rod (2).
5. The safety protection device for cable hoisting of an arch bridge according to claim 4, characterized in that, The tail end of the second worm gear shaft (303) and the outer extension rod (203) are circumferentially connected, and the second worm gear shaft (303) and the second worm (205) are meshed together.
6. The safety protection device for cable hoisting of an arch bridge according to claim 5, characterized in that, The first worm gear shaft (201) and the side connecting frame (101) are circumferentially rotatably connected, and the first worm gear shaft (201) and the first worm (102) are meshed together.
7. The safety protection device for cable hoisting of an arch bridge according to claim 6, characterized in that, The outer protective cover (302) is a horn-shaped structure that is narrow at the top and wide at the bottom, and the outer protective cover (302) surrounds the outside of the central laser (301).