Method for erecting steel pipe type portal cableway

Abstract

The invention discloses an erecting method of a steel pipe type portal cableway, relates to the technical field of cableway erecting, and aims to solve the technical problems that in the prior art, accurate consideration of the terrain and the transportation volume is lacked, the transportation process is prone to being blocked, the transportation continuity is poor, and the transportation efficiency is low. And cableway type selection. According to the steel pipe type portal cableway erecting method, accurate model selection is carried out according to different terrains and transportation volumes, for example, a suitable cableway form is adopted at a solitary mountain head or a specific complex terrains, and roundabout of a transportation route is avoided. The circulation type transportation design ensures that the materials can be continuously transported to the construction site, the transportation efficiency is greatly improved, and in practical engineering, compared with a traditional transportation mode, the transportation time is greatly shortened. By improving the erecting method, materials can be supplied to all links of a project in time, construction delay caused by material shortage is effectively avoided, the construction period is remarkably shortened, and the time cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cableway erection, and more particularly to a method for erecting a steel tube type gantry cableway. Background Art

[0002] In the field of modern engineering construction, especially in projects such as wind farm construction and infrastructure construction in mountainous areas, material transportation often faces severe challenges, and complex terrain such as mountains and canyons have become huge obstacles to traditional transportation methods. The steel tube gantry cableway came into being, providing an innovative and effective way to solve these problems. The role of the steel tube gantry cableway is mainly reflected in many fields such as transportation, engineering construction, and tourism. It can build an aerial transportation channel under complex terrain conditions such as mountainous areas, canyons, and rivers, connecting areas that are far apart or difficult to reach directly by other means of transportation. For example, in some remote mountainous areas, the steel tube gantry cableway can cross peaks and deep valleys, connecting scattered villages, and facilitating residents' travel and material transportation. The steel tube gantry cableway requires construction work to be set up.

[0003] However, in the existing technology, the construction of cableways often lacks accurate consideration of terrain and transportation volume. Most traditional methods cannot flexibly select the appropriate type of cableway when facing complex terrain, which often leads to unreasonable transportation route planning and detours, which not only increases the transportation distance but also reduces the transportation efficiency. For example, on lonely hills or similar special terrains, traditional technologies may adopt a unified cableway design, which cannot fully adapt to the terrain characteristics, causing frequent obstructions in the material transportation process. Moreover, traditional transportation methods are usually not cyclical, with poor transportation continuity and easy interruption of material supply. In actual projects, the transportation time is long, and the construction is often stagnant due to the failure of materials to arrive on time, which greatly prolongs the construction period, increases time and labor costs, and seriously affects the overall progress and economic benefits of engineering construction. It is difficult to meet the urgent needs of modern projects for efficient material transportation. In view of this, we propose a method for the construction of a steel tube gantry cableway. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, adapt to actual needs, and provide a method for erecting a steel tube gantry cableway to solve the technical problems that the current technology lacks accurate consideration of terrain and transport volume, the transportation process is easily obstructed, the transportation continuity is poor, and the transportation efficiency is low.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for erecting a steel tube gantry cableway, comprising the following steps;

[0006] S1: Selection of ropeway type: Determine the appropriate ropeway type based on the tower base capacity, terrain and ropeway performance to ensure transportation efficiency and feasibility;

[0007] S2: Bracket installation and fixation, using specific specifications of steel pipes to combine legs, planning the installation position and fixing it, and ensuring the stability of the bracket by reasonably setting the horizontal support, vertical support, guy wire and crossbar to adapt to different heights and terrain conditions;

[0008] S3: Installation of the cableway system, selection of suitable cableway traction machine, careful leveling of the installation site and scientific anchoring to ensure stable operation of the drive device and provide reliable power for the cableway operation;

[0009] S4: System debugging and operation, which is carried out in accordance with a series of quality control and safety standards, including the setting of safety factors for each component, rope fixing specifications and operating speed limits, to ensure the safe and efficient operation of the ropeway.

[0010] Preferably, the step S1 is specifically as follows:

[0011] When there is only one tower on the top of a solitary mountain, the transportation distance is short, and the vehicle transportation road across the valley can only go to the bottom of the mountain, a single-span single-cable circular cableway is used;

[0012] When there are continuous towers going up and down the mountain, or when there are more than two towers on a mountain, or when the transportation distance is long and the vehicle transportation can only reach the foot of one tower, and the small transportation of the remaining towers needs to pass through this tower, a multi-span single ropeway circulating ropeway is used.

[0013] Preferably, the installation preparation work of step S2 is specifically as follows:

[0014] The legs are connected by 3 groups of galvanized Q345 steel pipes with an outer diameter of 108mm and a thickness of 5mm. During installation, first use lime to draw the edge line of the bracket when it is assembled to the required height on the ground and determine the fixing position of the bottom plate of the horizontal support and vertical support. Dig a pit with a side length of 30cm and a depth of 30cm on the ground to fix the legs. After the bracket is erected, backfill and compact.

[0015] Preferably, the leg assembly and lifting in step S2 are specifically as follows:

[0016] Assemble a horizontal support leg with a length of 8m or 10m and a vertical support of 2m on one side on the ground, and place them along the slope of the mountain. Dig a 40cm×40cm×40cm small pit at the predetermined position of the horizontal support to fix the bottom end. Hang a 15.5mm steel wire rope on the top plate of the horizontal support, and lift the horizontal support legs by manpower or winch. During the raising process, install two control wires on the top plate to prevent deviation, and install a wire on the outside of each vertical support to adjust the angle to no more than 20°. After lifting to a certain height, add vertical steel pipe sections until the required height is reached and install wires to fix it.

[0017] Preferably, the installation and improvement of the crossbeam in step S2 are specifically as follows;

[0018] After the legs on both sides are assembled, the angle between the guy wire and the ground should not be greater than 45°. Use a tensioner to tighten it and make the tension on both sides equal. Install the beam lifting auxiliary device on the top of the legs on both sides, hang the lifting pulley, and use two steel ropes to pull the beam. During the installation process, ensure that all components are firmly and reliably connected.

[0019] Preferably, the support strengthening and stabilization in step S2 is specifically as follows:

[0020] Use manpower assistance or a hand hoist to install the saddle and connect it firmly. The height of the terminal brackets at both ends of the cableway is adjusted according to the terrain to ensure that each working rope is in a reasonable position after tensioning, which is convenient for installing and disassembling the running trolley. The three legs of the cableway bracket over 3m high are reinforced with steel pipes or round logs with a diameter of not less than 120mm to set up cross bars. In addition to cross bars, cableways over 6m high also need to be equipped with guy wires. There are two guy wires on one side, which are installed in an outward-facing "X" shape at an angle of 45° to the direction of cableway installation. A Ф12.5 wire rope sleeve + 3t or more ground anchor is used to set up a guy wire system. The angle between the guy wire and the ground is not more than 45°. After tightening, lock it with a Yuanbao card and check the slackness regularly for adjustment.

[0021] Preferably, the driving device of step S3 is installed as follows:

[0022] The driving device uses a cableway traction machine. During installation, the site is leveled and sleepers are used under the driver base. The driving device is fixed by anchor lines on all sides. The angle between the anchor line and the center line is not greater than 30 degrees. Steel ground anchors are used. The specifications of the anchor line wire rope and the number of anchoring points are determined according to the maximum load and safety factor of the traction machine.

[0023] Preferably, the rope laying and connection in step S3 are specifically as follows:

[0024] The safety factors of the main components of the cableway should meet the following requirements: the load-bearing rope and return rope are 2.6-2.8, the traction rope is not less than 5, the crossbeam, saddle, and ground anchor are not less than 2.5, the bracket and walking trolley are not less than 3, and the steel structure bracket is directly selected according to the rated load; when using a rope clamp to fix the end of the working rope, the rope clamp pressure plate is on the side where the wire rope is mainly subjected to force, the rope clamp shall not be set crosswise, the rope clamp spacing shall not be less than 6 times the diameter of the wire rope, and the number of rope clamps shall be selected according to the diameter of the wire rope as required. The maximum operating speed of the cableway shall not exceed 32m / min, and sudden braking during high-speed operation is strictly prohibited. In principle, the load-bearing rope shall not be spliced, the splicing length of the traction rope shall not be less than 100 times the diameter of the wire rope, and the splicing length of the splicing ring rope or rope sleeve shall not be less than 15 times the diameter of the wire rope and not less than 300mm.

[0025] Preferably, the system debugging and operation of step S4 are specifically as follows:

[0026] It is strictly forbidden to carry passengers on the cableway. It is strictly forbidden to stand below the cableway during operation. The cableway should be stopped in case of strong wind, heavy rain or snow. Overloading is strictly prohibited. The loading spacing and single piece weight should be calculated according to the cableway parameters and marked with construction nameplates to ensure smooth communication along the line. The traction machine should pull slowly when the trolley passes through the middle support. Regular inspections should be carried out including the anchoring of the load-bearing cable, guy wires, rigging and supports. The loading and unloading of the cableway should be carried out when the operation is stopped. Limit and stop devices should be set at the material yard support. The cableway equipment and its accessories should be kept in good condition. Grounding wires should be set on the cableway traction machine and the support. The traction machine operation should strictly follow the relevant post responsibility system and operating procedures.

[0027] Preferably, the system debugging and operation of step S4 are specifically as follows:

[0028] During the operation of the cableway, an automatic monitoring system is set up to monitor in real time key parameters including the tension of the load-bearing cable, the speed of the traction cable and the displacement of the bracket. When the parameters exceed the preset safety range, an alarm is automatically issued and the cableway operation is stopped.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The steel tube gantry cableway erection method of the present invention is accurately selected according to different terrains and transportation volumes. For example, a suitable cableway form is used on isolated hills or specific complex terrains to avoid circuitous transportation routes. Its circular transportation design ensures that materials can be continuously transported to the construction site, greatly improving transportation efficiency. In actual projects, the transportation time is greatly shortened compared to traditional transportation methods. By improving the erection method, the present invention can supply materials to all links of the project in a timely manner, effectively avoid construction delays caused by material shortages, significantly save construction time, and reduce time costs.

[0031] 2. The present invention follows strict standards in the installation and fixing of the bracket, from the selection of leg materials, determination of the installation position to the setting of the cables and crossbars. The galvanized steel pipe legs of specific specifications and the precise positioning grooves ensure a stable foundation. The reasonable layout of cables and crossbars enhances the overall rigidity of the bracket and adapts to various terrain stress changes. For example, in windy mountainous areas, even in strong winds, the displacement of the bracket is very small and does not affect the operation of the cableway. When the cableway system is installed, the safety factor of each component is strictly controlled, and the rope connection is standardized to effectively prevent accidents such as rope falling off and breaking. In long-term operation monitoring, the present invention has a stable structure and a very low equipment failure rate, which reduces the number of maintenance times and costs, lays a solid foundation for the safe and stable operation of the cableway, effectively guarantees the safety of personnel and material transportation, and reduces engineering safety risks and potential losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a fixed structure diagram of the cableway legs of the present invention. DETAILED DESCRIPTION

[0033] Embodiment 1, as Figure 1 As shown, the present invention relates to a method for erecting a steel tube type gantry cableway, comprising the following steps:

[0034] S1: Selection of ropeway type: Determine the appropriate ropeway type based on the tower base capacity, terrain and ropeway performance to ensure transportation efficiency and feasibility.

[0035] The step S1 is specifically as follows: when there is only one tower on the top of an isolated mountain and the transportation distance is short, it crosses the valley and the vehicle transportation road can only go to the bottom of the mountain, a single-span single-cable circulating cableway is used;

[0036] When there are continuous towers going up and down the mountain, or when there are more than two towers on a mountain, or when the transportation distance is long and the vehicle transportation can only reach the foot of one tower, and the small transportation of the remaining towers needs to pass through this tower, a multi-span single ropeway circulating ropeway is used.

[0037] S2: The bracket is installed and fixed. The legs are combined with steel pipes of specific specifications. The installation position is planned and fixed. The stability of the bracket is ensured by reasonably setting the horizontal support, vertical support, guy wire and cross bar to adapt to different heights and terrain conditions.

[0038] The installation preparation work of step S2 is specifically as follows; the legs are connected and assembled by 3 groups of galvanized Q345 steel pipes with an outer diameter of 108mm and a thickness of 5mm. During installation, the edge line of the bracket when it is assembled to the required height is first drawn on the ground with lime, and the bottom plate fixing position of the horizontal support and vertical support is determined. A pit with a side length of 30cm and a depth of 30cm is excavated on the ground to fix the legs. After the bracket is erected, backfill and compact.

[0039] The leg assembly and lifting of step S2 are specifically as follows: assemble a horizontal support leg with a length of 8m or 10m and a vertical support of 2m on one side on the ground, place them along the slope of the mountain, dig a 40cm×40cm×40cm small pit at the predetermined position of the horizontal support to fix the bottom end, hang a 15.5mm steel wire rope on the top plate of the horizontal support, lift the horizontal leg by manpower or capstan, install two control wires on the top plate to prevent deviation during the lifting process, install a wire on the outside of the vertical support to adjust the angle to no more than 20°, and after lifting to a certain height, add vertical steel pipe sections until the required height is reached and install wires to fix them.

[0040] The installation and improvement of the beam in step S2 are specifically as follows: after the two side legs are assembled, the angle between the guy wire and the ground is no more than 45°, and it is tightened with a tensioner and the tension on both sides is equal. A beam lifting auxiliary device is installed on the top surface of the two side legs, and a lifting pulley is hung. The beam is lifted by pulling with two steel ropes, and the installation process ensures that the connections of all components are firm and reliable.

[0041] The support reinforcement and stabilization of step S2 are as follows: the saddle is installed and firmly connected using human assistance or a hand hoist, and the height of the terminal supports at both ends of the cableway is adjusted according to the terrain to ensure that the reasonable position of each working rope after tensioning is convenient for the installation and disassembly of the running trolley; the cableway support with a height of more than 3m is strengthened by setting a cross bar between the three legs with a steel pipe or a round wood with a diameter of not less than 120mm; in addition to setting a cross bar, the cableway support with a height of more than 6m needs to be equipped with a guy wire, with 2 guy wires on one side, which are installed in an outward-facing shape at an angle of 45° to the direction of cableway installation, and a Ф12.5 steel wire rope sleeve + 3t or more ground anchor is used to establish a guy wire system, and the angle between the guy wire and the ground is not greater than 45°. After tightening, it is locked with a Yuanbao card and the slack is checked regularly for adjustment.

[0042] S3: For the installation of the cableway system, select an appropriate cableway traction machine, carefully level the installation site and scientifically anchor it to ensure the stable operation of the drive device and provide reliable power for the cableway operation.

[0043] The installation of the driving device in step S3 is as follows: the driving device uses a cableway traction machine, the site is leveled during installation, sleepers are used to pad under the driver base, the driving device is fixed by anchor lines around, the angle between the anchor line and the center line is not greater than 30 degrees, steel ground anchors are used, and the specifications of the anchor line wire rope and the number of anchoring points are determined according to the maximum load and safety factor of the traction machine.

[0044] The rope laying and connection of step S3 are as follows: the safety factors of the main components of the ropeway should meet the following requirements: the load-bearing rope and the return rope are 2.6-2.8, the traction rope is not less than 5, the crossbeam, saddle, and ground anchor are not less than 2.5, the bracket and the walking trolley are not less than 3, and the steel structure bracket is directly selected according to the rated load; when the end of the working rope is fixed with a rope clamp, the rope clamp pressure plate is on the side where the wire rope is mainly subjected to force, the rope clamp shall not be arranged crosswise, the rope clamp spacing shall not be less than 6 times the diameter of the wire rope, and the number of rope clamps shall be selected according to the diameter of the wire rope according to regulations, the maximum operating speed of the ropeway shall not exceed 32m / min, and sudden braking during high-speed operation is strictly prohibited. In principle, the load-bearing rope shall not be spliced, the splicing length of the traction rope shall not be less than 100 times the diameter of the wire rope, and the splicing length of the splicing ring rope or rope sleeve shall not be less than 15 times the diameter of the wire rope and not less than 300mm.

[0045] S4: System debugging and operation, which is carried out in accordance with a series of quality control and safety standards, including the setting of safety factors for each component, rope fixing specifications and operating speed limits, to ensure the safe and efficient operation of the ropeway.

[0046] The system debugging and operation of step S4 are as follows: it is strictly forbidden to carry passengers on the cableway, and it is strictly forbidden to stand underneath during operation. The cableway must be stopped in case of strong winds, heavy rain, or snow. Overload is strictly prohibited. The loading spacing and single piece weight are calculated according to the cableway parameters and the construction nameplate is marked to ensure smooth communication along the line. The traction machine pulls slowly when the trolley passes through the middle bracket. Regular inspections are carried out including the anchoring of the load-bearing cable, the guy wire, the rigging, and the bracket. The cableway is loaded and unloaded when it stops running. Limit and stop devices are set at the bracket of the material yard. The cableway equipment and its accessories are kept in good condition. The cableway traction machine and the bracket are grounded. The traction machine operation strictly follows the relevant job responsibility system and operating procedures.

[0047] The system debugging and operation of step S4 are specifically as follows: during the operation of the cableway, an automatic monitoring system is set to monitor in real time key parameters including the tension of the load-bearing cable, the speed of the traction cable and the displacement of the bracket. When the parameters exceed the preset safety range, an alarm is automatically issued and the cableway operation is stopped.

[0048] In actual engineering applications, a mountain wind power project is taken as an example. The project is located in a mountainous area with complex terrain. There are multiple towers that go up and down the mountain continuously and the transportation distance is long. Vehicle transportation can only reach the foot of some towers. According to the method of the present invention, a detailed on-site survey is first carried out, and a multi-span single-cable circular cableway is determined based on the tower base transportation capacity, terrain and cableway performance.

[0049] During the installation and fixing stage of the support, the support leg materials were prepared in strict accordance with the requirements, the edge lines were accurately drawn and the fixing position of the support bottom plate was determined, and the pit excavation and support leg fixing work were successfully completed. The construction personnel used professional measuring tools, such as total stations and levels, to ensure that the position deviation of each pit was within the allowable range, providing a solid foundation for the subsequent installation of the support legs. During the assembly and lifting of the support legs, the construction personnel worked closely together and carefully controlled the pull wires to successfully lift the horizontal and vertical supports to the designed height and fix them firmly. For the heavier horizontal supports, multiple sets of pulleys were used for auxiliary lifting, which effectively reduced manpower consumption and improved construction efficiency. When installing the crossbeam, it was ensured that the connections of various components were tight and reliable, the saddle was reasonably installed, and the height adjustment of the terminal support was accurate. During the installation process, high-strength bolts were used for connection, and the preload force test was carried out on the connection parts to ensure the reliability of the connection. For higher supports, the crossbars and pull wires were set strictly in accordance with the standards, which effectively guaranteed the stability of the support. When setting the crossbars, standardized connection nodes were used to ensure that the connection between the crossbars and the support legs was firm and could withstand large lateral forces.

[0050] During the installation of the cableway system, an appropriate cableway traction machine was selected and the operation was carried out in accordance with the site leveling requirements and anchoring specifications. When leveling the site, a bulldozer and a roller were used for joint operations to ensure that the site leveling reached an extremely high standard. During the rope laying and connection process, the safety factor of each component was strictly controlled, and the steel rope clamps were correctly installed to ensure that the cableway system met the safety operation standards. During the rope laying process, tension control equipment was used to evenly distribute the tension of the rope and avoid local stress concentration.

[0051] During the system debugging and operation phase, all safety measures and operating procedures were fully implemented. The automatic monitoring system played an important role. In a simulated operation, when the load-bearing cable tension fluctuated abnormally due to sudden strong winds and approached the preset safety upper limit, the monitoring system responded quickly, issued an alarm in time and automatically stopped the cableway operation, effectively avoiding the occurrence of potential safety accidents. After multiple debugging and actual operation tests, the cableway system operated stably and the transportation efficiency was significantly improved. It successfully met the project's material transportation needs, effectively guaranteed the smooth progress of the project construction, and fully verified the feasibility, safety and efficiency of the invention in the transportation of materials in complex mountainous terrain.

[0052] In terms of material management, all load-bearing structures are strictly painted with three coats of anti-rust paint. When the raw materials are delivered, the manufacturer's material certification documents and appearance are carefully checked, and a batch of steel pipes with minor defects in appearance are promptly returned and replaced to ensure the quality of the materials. The welding parts strictly follow the welding regulations and standard operations. After flaw detection, the welding quality is all qualified. In the welding process, advanced welding processes such as gas shielded welding are used to improve the strength and toughness of the welded joints.

[0053] When the freight cableway needed to cross a simple mountain road during the project, obvious warning signs were set up in accordance with regulations, and communication and coordination with relevant traffic management departments were carried out in advance to obtain consent. During the transportation process, accurate calculations and on-site monitoring were used to ensure that the cargo always maintained a safe distance from passing vehicles, and no safety accidents occurred, ensuring the safety and smoothness of highway traffic. Special protective nets were set up at the crossing of the highway to prevent the cargo from accidentally falling and affecting the highway.

[0054] For cableway supports with a height of more than 6m, when setting up the cable system, the anchor is buried at a depth of 1.8m, and concrete is poured around the anchor to form a protective layer, which effectively prevents rain erosion and external force damage. During long-term operation, the anchor and cable are regularly checked, and no looseness or damage occurs, ensuring the stability of the support. At the same time, the cable is treated with anti-corrosion to extend its service life.

[0055] The installation site of the drive unit has been finely leveled, with the flatness error controlled within ±3mm. The sleepers are laid tightly and evenly, with a spacing of 25cm between adjacent sleepers. During operation, the drive unit runs smoothly with minimal vibration, causing no adverse effects on the surrounding environment and the cableway system, providing reliable guarantees for the stable operation of the cableway. In addition, the drive unit is regularly maintained, and wearing parts such as belts and filters are replaced to ensure that its performance is always in good condition.

[0056] In another infrastructure construction project in mountainous areas, the steel pipe gantry cableway erection method of the present invention is also used. The project needs to transport a large amount of construction materials, such as cement, steel, sand and gravel. In the selection of cableway types, according to different transportation routes and tower position distribution, single-span single-cable circulation cableways and multi-span single-cable circulation cableways are reasonably matched to achieve efficient transportation of materials. During the installation of the bracket, the bracket foundation is specially treated in view of the complex geological conditions in the mountainous area. For soft soil foundations, pile reinforcement is adopted to increase the bearing capacity of the foundation and ensure the stability of the bracket. During the installation of the cableway system, in order to improve the transportation efficiency, the selection of ropes is optimized, and high-strength, low-friction steel wire ropes are selected to reduce energy loss and increase the service life of the ropes. During the system debugging and operation stage, the training of operators is strengthened to enable them to master the operation skills and safety precautions of the cableway. Through these measures, the cableway system of the project operates well throughout the construction process, greatly shortening the material transportation time, reducing transportation costs, and providing strong support for the smooth completion of the project.

[0057] In the subsequent operation and maintenance process, a complete inspection system was established. Professional personnel are arranged to inspect the cableway system every day, including the structural integrity of the bracket, the wear of the rope, the tightness of the anchor and the cable, and the operating status of the drive device. Once a problem is found, it is repaired immediately to ensure that the cableway system is always in a safe and reliable operating state. For example, during an inspection, a slight crack was found in a welding part of a bracket. The maintenance personnel promptly used the method of repair welding and reinforcement to deal with it, avoiding further expansion of the crack and ensuring the safety of the bracket. At the same time, the key components of the cableway system are regularly replaced and maintained, such as replacing the grease of the wire rope every six months, and cleaning and changing the oil of the gear box of the drive device every year, which extends the service life of the equipment and improves the reliability and stability of the cableway system.

[0058] Through the application of multiple actual projects, the steel tube gantry cableway erection method of the present invention has demonstrated excellent performance under different complex terrains and engineering requirements, providing an efficient, safe and environmentally friendly solution for material transportation in engineering construction, and has broad application prospects and promotion value.

[0059] In another mountain bridge construction project, the construction site is located in a canyon area with extremely steep terrain, and traditional transportation methods are almost impossible to implement. The cableway erection method of the present invention has become the key to solving the problem of material transportation. During the on-site survey stage, the canyon terrain was mapped with high precision with the help of drone aerial photography and professional geographic information system software, providing detailed and accurate data support for the cableway design. According to the mapping results, a multi-span single-cable circular cableway across the canyon was designed, and its span and height are at a high level among similar projects. During the installation of the bracket, the bracket structure was reinforced for the strong wind environment and steep hillside terrain of the canyon. The number of lateral and vertical supports of the bracket was increased, and the wind resistance and stability of the bracket were improved. At the same time, a special anchoring technology was used to bury the ground anchor deep in the hard rock layer and use high-strength anchor rods for connection to ensure that the ground anchor will not loosen in harsh environments. During the installation of the cableway system, in order to adapt to the strong wind weather in the canyon, the tension adjustment system of the rope was optimized. An automatic tension compensation device was installed, which can automatically adjust the rope tension according to the wind force to ensure that the cableway can still operate safely and stably under strong wind conditions. During the system debugging and operation phase, a remote monitoring system was established. Through Internet technology, managers can remotely monitor the operation status of the cableway in real time, including parameters such as load-bearing cable tension, traction cable speed, and bracket displacement. Once an abnormal situation occurs, the system will immediately send an alarm message to the manager's mobile terminal so that timely measures can be taken to deal with it. Through these targeted designs and measures, the cableway system successfully overcame the many difficulties brought by the canyon terrain, efficiently completed the task of transporting materials required for bridge construction, and laid a solid foundation for the successful completion of the project.

[0060] In terms of environmental protection, the cableway erection method of the present invention has achieved remarkable results in multiple projects. Taking a project located near a forest reserve as an example, due to the use of an aerial cableway for transportation, the damage to ground vegetation is minimized. During the construction process, the construction scope is strictly controlled to avoid unnecessary interference with the surrounding ecological environment. At the same time, the waste generated during the construction process is classified, recycled and properly disposed of, reducing pollution to the environment. In terms of forest fire prevention, a series of strict measures have been taken. Multiple fire monitoring points are set up at the construction site, equipped with advanced infrared fire monitoring equipment, which can detect potential fire hazards in time. Comprehensive forest fire prevention training has been conducted for construction personnel to improve their fire prevention awareness and emergency response capabilities. Construction personnel are strictly prohibited from smoking and using open flames in the forest area, and fire prevention modifications have been made to construction equipment, such as installing fireproof covers on engines. Through these environmental protection and fire prevention measures, while ensuring the smooth progress of engineering construction, the local ecological environment and forest resources are effectively protected, and the coordinated development of engineering construction and environmental protection is achieved.

[0061] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A method for erecting a steel tube gantry cableway, characterized in that: The method comprises the following steps: S1: Selection of ropeway type: Determine the appropriate ropeway type based on the tower base capacity, terrain and ropeway performance to ensure transportation efficiency and feasibility; S2: Bracket installation and fixation, using specific specifications of steel pipes to combine legs, planning the installation position and fixing it, and ensuring the stability of the bracket by reasonably setting the horizontal support, vertical support, guy wire and crossbar to adapt to different heights and terrain conditions; S3: Installation of the cableway system, selection of suitable cableway traction machine, careful leveling of the installation site and scientific anchoring to ensure stable operation of the drive device and provide reliable power for the cableway operation; S4: System debugging and operation, which is carried out in accordance with a series of quality control and safety standards, including the setting of safety factors for each component, rope fixing specifications and operating speed limits, to ensure the safe and efficient operation of the ropeway.

2. The method for erecting a steel tube gantry cableway according to claim 1, characterized in that: The step S1 is specifically as follows: When there is only one tower on the top of a solitary mountain, the transportation distance is short, and the vehicle transportation road across the valley can only go to the bottom of the mountain, a single-span single-cable circular cableway is used; When there are continuous towers going up and down the mountain, or when there are more than two towers on a mountain, or when the transportation distance is long and the vehicle transportation can only reach the foot of one tower, and the small transportation of the remaining towers needs to pass through this tower, a multi-span single ropeway circulating ropeway is used.

3. The method for erecting a steel tube gantry cableway according to claim 2, characterized in that: The installation preparation work of step S2 is specifically as follows: The legs are connected by 3 groups of galvanized Q345 steel pipes with an outer diameter of 108mm and a thickness of 5mm. During installation, first use lime to draw the edge line of the bracket when it is assembled to the required height on the ground and determine the fixing position of the bottom plate of the horizontal support and vertical support. Dig a pit with a side length of 30cm and a depth of 30cm on the ground to fix the legs. After the bracket is erected, backfill and compact.

4. A method for erecting a steel tube gantry cableway according to claim 3, characterized in that: The leg assembly and lifting of step S2 are specifically as follows: Assemble a horizontal support leg with a length of 8m or 10m and a vertical support of 2m on one side on the ground, and place them along the slope of the mountain. Dig a 40cm×40cm×40cm small pit at the predetermined position of the horizontal support to fix the bottom end. Hang a 15.5mm steel wire rope on the top plate of the horizontal support, and lift the horizontal support legs by manpower or winch. During the raising process, install two control wires on the top plate to prevent deviation, and install a wire on the outside of each vertical support to adjust the angle to no more than 20°. After lifting to a certain height, add vertical steel pipe sections until the required height is reached and install wires to fix it.

5. A method for erecting a steel tube gantry cableway according to claim 4, characterized in that: The installation and improvement of the beam in step S2 are specifically as follows; After the legs on both sides are assembled, the angle between the guy wire and the ground should not be greater than 45°. Use a tensioner to tighten it and make the tension on both sides equal. Install the beam lifting auxiliary device on the top of the legs on both sides, hang the lifting pulley, and use two steel ropes to pull the beam. During the installation process, ensure that all components are firmly and reliably connected.

6. A method for erecting a steel tube gantry cableway according to claim 5, characterized in that: The support strengthening and stabilization of step S2 is specifically as follows: Use manpower assistance or a hand hoist to install the saddle and connect it firmly. The height of the terminal brackets at both ends of the cableway is adjusted according to the terrain to ensure that each working rope is in a reasonable position after tensioning, which is convenient for installing and disassembling the running trolley. The three legs of the cableway bracket over 3m high are reinforced with steel pipes or round logs with a diameter of not less than 120mm to set up cross bars. In addition to cross bars, cableways over 6m high also need to be equipped with guy wires. There are two guy wires on one side, which are installed in an outward-facing "X" shape at an angle of 45° to the direction of cableway installation. A Ф12.5 wire rope sleeve + 3t or more ground anchor is used to set up a guy wire system. The angle between the guy wire and the ground is not more than 45°. After tightening, lock it with a Yuanbao card and check the slackness regularly for adjustment.

7. A method for erecting a steel tube gantry cableway according to claim 6, characterized in that: The installation of the driving device in step S3 is specifically as follows; The driving device uses a cableway traction machine. During installation, the site is leveled and sleepers are used under the driver base. The driving device is fixed by anchor lines on all sides. The angle between the anchor line and the center line is not greater than 30 degrees. Steel ground anchors are used. The specifications of the anchor line wire rope and the number of anchoring points are determined according to the maximum load and safety factor of the traction machine.

8. A method for erecting a steel tube gantry cableway according to claim 7, characterized in that: The rope laying and connection in step S3 are specifically as follows: The safety factors of the main components of the cableway should meet the following requirements: the load-bearing rope and return rope are 2.6-2.8, the traction rope is not less than 5, the crossbeam, saddle, and ground anchor are not less than 2.5, the bracket and walking trolley are not less than 3, and the steel structure bracket is directly selected according to the rated load; when using a rope clamp to fix the end of the working rope, the rope clamp pressure plate is on the side where the wire rope is mainly subjected to force, the rope clamp shall not be set crosswise, the rope clamp spacing shall not be less than 6 times the diameter of the wire rope, and the number of rope clamps shall be selected according to the diameter of the wire rope as required. The maximum operating speed of the cableway shall not exceed 32m / min, and sudden braking during high-speed operation is strictly prohibited. In principle, the load-bearing rope shall not be spliced, the splicing length of the traction rope shall not be less than 100 times the diameter of the wire rope, and the splicing length of the splicing ring rope or rope sleeve shall not be less than 15 times the diameter of the wire rope and not less than 300mm.

9. A method for erecting a steel tube gantry cableway according to claim 8, characterized in that: The system debugging and operation of step S4 are specifically as follows: It is strictly forbidden to carry passengers on the cableway. It is strictly forbidden to stand below the cableway during operation. The cableway should be stopped in case of strong wind, heavy rain or snow. Overloading is strictly prohibited. The loading spacing and single piece weight should be calculated according to the cableway parameters and marked with construction nameplates to ensure smooth communication along the line. The traction machine should pull slowly when the trolley passes through the middle support. Regular inspections should be carried out including the anchoring of the load-bearing cable, guy wires, rigging and supports. The loading and unloading of the cableway should be carried out when the operation is stopped. Limit and stop devices should be set at the material yard support. The cableway equipment and its accessories should be kept in good condition. Grounding wires should be set on the cableway traction machine and the support. The traction machine operation should strictly follow the relevant post responsibility system and operating procedures.

10. A method for erecting a steel tube gantry cableway according to claim 9, characterized in that: The system debugging and operation of step S4 are specifically as follows: During the operation of the cableway, an automatic monitoring system is set up to monitor in real time key parameters including the tension of the load-bearing cable, the speed of the traction cable and the displacement of the bracket. When the parameters exceed the preset safety range, an alarm is automatically issued and the cableway operation is stopped.

Images