Self-counterweight assembly type long cantilever suspension mechanism for cable bent tower and construction method of self-counterweight assembly type long cantilever suspension mechanism

Abstract

The invention discloses a self-counterweight assembly type long cantilever suspension mechanism for a cable bent tower and a construction method of the self-counterweight assembly type long cantilever suspension mechanism, a middle suspension assembly and a side suspension assembly are arranged, a self-counterweight integral structure is integrally formed, and the middle suspension assembly and the side suspension assembly are jointly connected with two construction platforms on two cable bent tower branches in a suspension mode. The gravity center of the whole system can reach a stable state through the mass distribution of the structure, so that the self-counterweight function is achieved, the structural stress is optimal, the overall strength, rigidity and stability of the structure are improved, and the suspension mechanism is effectively lifted and loaded; the problem that the extension length of a front beam of a suspension mechanism is limited is solved, and the problem that the suspension mechanism adapts to variable-cross-section cable bent tower construction is solved.

Description

Technical Field

[0001] The present invention relates to the field of construction machinery and the field of bridge engineering technology. More specifically, the present invention relates to a self-assembled and re-assembled long cantilever suspension mechanism for a pylon and a construction method thereof. Background Art

[0002] Due to being exposed to the natural environment for a long time, the pylon has diseases such as different degrees of aging and corrosion after years of operation, reducing the durability of the pylon. Therefore, a large amount of maintenance is required during operation. At present, the maintenance of domestic bridge pylons mainly relies on traditional suspension mechanisms combined with standard hanging baskets or C-shaped hanging baskets for construction. However, for ultra-high pylons, as the height increases, the influence of wind load on the suspension mechanism increases geometrically. The traditional suspension mechanism may not be able to resist the strong wind effect due to its own structural and weight limitations, and there is a problem of weak strength; under complex working conditions, especially when the hanging basket is under eccentric load operation, that is, when the structure is subjected to uneven forces, the traditional suspension mechanism is prone to shaking and tilting, and there are problems of weak structural resistance to deformation and poor structural stability; for variable cross-section pylons, in order to make the hanging basket reach the entire section, it is required that the front beam of the suspension mechanism needs to be cantilevered by a certain length (generally the extension length is less than 1.5 m), but if the front beam is cantilevered too long, it will increase the structural bending moment, reduce the structural safety service factor, and is prone to tipping risk, that is, the traditional suspension mechanism has poor applicability. In addition, the traditional suspension mechanism realizes the self-balance of the structure through the form of counterweight, and has high requirements for the operation space.

[0003] In summary, when maintaining the pylon, the use of the traditional suspension mechanism form is no longer applicable. Summary of the Invention

[0004] An object of the present invention is to solve at least the above problems and provide at least the advantages described later.

[0005] Another object of the present invention is to provide a self-assembled and re-assembled long cantilever suspension mechanism for a pylon and a construction method thereof, so as to solve the technical problem that the suspension mechanism provided at the top of the pylon for hanging a construction hanging basket in the prior art has insufficient cantilever ability and affects the structural safety.

[0006] In order to achieve these objects and other advantages of the present invention, on the one hand, a self-assembled and re-assembled long cantilever suspension mechanism for a pylon is provided, which is used for hanging and supporting a construction platform surrounding the outer sides of two branches of the pylon. The construction platform of each branch includes a front platform, an outer platform, a rear platform and an inner platform close to the pylon center that are sequentially connected, and includes: The middle suspension assembly includes suspension devices A, B, C, D, and E respectively fixed on the top of the tower. Among them, suspension devices A and B are located on the front side of the top of the tower and are symmetrically connected with respect to the center line of the tower top. Suspension devices C and D are located on the rear side of the top of the tower and are symmetrically connected with respect to the center line of the tower top. Suspension device A and suspension device C are integrated along the same bridge longitudinal direction. Suspension device B and suspension device D are integrated along the same bridge longitudinal direction. A pair of suspension devices E are arranged in a figure-eight shape respectively facing each limb of the cable tower, and each pair of figure-eight suspension devices E extend towards the front and rear sides of the cable tower respectively, and are integrated between each pair of figure-eight suspension devices E. The outer ends of all suspension devices A, B, C, D, and E are set as suspension ends and respectively project out of the corresponding front or rear sides of the cable tower; The side suspension assembly is fixed on the top of the tower and a group is symmetrically arranged on both sides corresponding to the limbs of the middle suspension assembly. Each group includes suspension devices F and G arranged in sequence along the direction away from the center of the cable tower. Suspension device F extends along the bridge longitudinal direction and both ends respectively project out of the corresponding front or rear sides of the cable tower to form suspension ends. A pair of suspension devices G extend horizontally outward in a figure-eight shape towards the outer platform corresponding to the limb of the cable tower and the outer ends respectively project out of the cable tower to form suspension ends; The two suspension ends of each pair of suspension devices G are used to suspend and connect the outer platform of the corresponding limb. The two suspension ends of each suspension device F are used to suspend and connect the inner platform of the corresponding limb. The two suspension ends of the same-side suspension devices A and E are used to suspend and connect the front platform of the corresponding limb. The two suspension ends of the same-side suspension devices B and E are used to suspend and connect the front platform of the corresponding limb. The two suspension ends of the same-side suspension devices C and E are used to suspend and connect the rear platform of the corresponding limb. The two suspension ends of the same-side suspension devices D and E are used to suspend and connect the rear platform of the corresponding limb of the cable tower.

[0007] Preferably, an anchor plate member is fixed on each of the suspension devices A, B, C, D, E, F, and G, and a turnbuckle is respectively arranged at the top towards the corresponding suspension end. Each turnbuckle is connected to a strengthening steel wire rope towards the corresponding suspension end. A guiding pulley is arranged at each suspension end. A working steel wire rope and a safety steel wire rope are respectively anchored and connected through the anchor plate member. The working steel wire rope passes through the rope inlet of the hoist arranged on the lower construction platform after passing around the corresponding guiding pulley. The safety steel wire rope passes through the rope inlet of the safety lock arranged on the lower construction platform after passing around the corresponding guiding pulley.

[0008] Preferably, the suspension device A, the suspension device B, the suspension device C, and the suspension device D each include a first vertical base, a first suspension rod horizontally connected to the middle of the first vertical base, a first cross rod is connected between the first suspension rod of the suspension device A and the first suspension rod of the suspension device B, and between the first suspension rod of the suspension device C and the first suspension rod of the suspension device D, a first longitudinal rod is coaxially connected between the first suspension rod of the suspension device A and the first suspension rod of the suspension device C, and between the first suspension rod of the suspension device B and the first suspension rod of the suspension device D, the bottom of the first vertical base is fixed to the top surface of the tower top, the basket bolt is provided at the top of the first vertical base, and a first diagonal rod is connected to the top of the first vertical base and the end of the corresponding first suspension rod close to the first longitudinal rod; Each of the suspension devices E includes a second vertical base and a second suspension rod horizontally connected to the middle of the second vertical base. The bottom of the second vertical base is fixed to the top surface of the tower top. The top of the second vertical base and the corresponding second suspension rod are connected to the end close to the center of the tower with a second diagonal rod. The basket bolt is arranged on the top of the second vertical base, and a second longitudinal rod is connected between the two second suspension rods of each pair of figure-eight suspension devices E.

[0009] Preferably, the second suspension rods of the two pairs of the figure-eight-shaped suspension devices E are staggered in height and arranged adjacent to each other, and the two second suspension rods facing the same side of the cable tower are cross-arranged and fixedly connected at the intersection.

[0010] Preferably, the suspension device F comprises a third vertical base, a third suspension rod horizontally connected to the middle of the third vertical base, the two ends of the third suspension rod respectively extend to the outside of the front and rear sides corresponding to the cable tower to form the two suspension ends, the bottom of the third vertical base is fixed to the top surface of the tower top, the top of the third vertical base and the corresponding end of the third suspension rod close to the center of the cable tower are connected with a third oblique rod, and the top of the third vertical base is provided with the basket bolt; Each of the suspension devices G includes a pair of fourth vertical bases and a fourth suspension rod horizontally connected to the middle of each fourth vertical base, the two fourth suspension rods are arranged to extend outward in an eight-shaped shape, the bottom of the fourth vertical base is fixed to the top surface of the tower top, the top of the fourth vertical base and the corresponding fourth suspension rod are connected to the end close to the center of the tower with a fourth diagonal rod, the top of the fourth vertical base is provided with the basket bolt, and a fourth longitudinal rod is connected between the two fourth suspension rods.

[0011] Preferably, a primary platform and two secondary platforms are formed successively downward from the top of the pylon. The two secondary platforms are symmetrically arranged on both sides of the corresponding pylon legs of the primary platform. Among them, the suspension device A, the suspension device B, the suspension device C, the suspension device D, and the suspension device E are fixed on the primary platform. A set of the suspension device F and the suspension device G is fixed on each secondary platform. A first wall-attached member is connected between the third suspension rod and the corresponding outer sidewall of the primary platform, and a second wall-attached member is connected between the fourth suspension rod and the corresponding outer sidewall of the primary platform.

[0012] Preferably, it further includes a safety monitoring and early warning system, which includes: An integrated wind speed and wind direction sensor, which is arranged on the tops of the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G, and is used to detect the wind speed and wind direction at the corresponding positions; A camera, which is arranged on the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G, and is used to take pictures of the upper ends of the working wire ropes; A pressure sensor, which is arranged on each of the suspension ends and is used to sense the weight change of the working wire rope pulling the load; A displacement sensor, which is arranged on each of the suspension ends and is used to sense the displacement change of the suspension end; An inclination sensor, which is arranged at positions close to the corresponding suspension ends on each of the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G, and is used to detect the change of the inclination angle; A tension sensor, which is installed on the working wire rope and is used to detect the tension of the working wire rope; A control terminal, which includes a data acquisition unit, a central processing unit, and an alarm device that are electrically connected in sequence. The data acquisition unit is respectively in communication connection with the integrated wind speed and wind direction sensor, the camera, the pressure sensor, the displacement sensor, the inclination sensor, and the tension sensor, and is used to obtain the corresponding data signals and transmit them to the central processing unit. The central processing unit is used to preset safety thresholds and compare the received data with the corresponding safety thresholds. When the safety thresholds are exceeded, the alarm device is triggered to issue an alarm.

[0013] On the other hand, the present invention also provides a construction method for a self-assembled and re-assembled long cantilever suspension mechanism for a pylon, including the following steps: S1. Fabricate the components of the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G in sections, and transport them to the site after trial assembly; S2. Layout the installation positions of the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G on the cable tower, and drill holes for inserting rebars; S3. Fix and install the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G on the cable tower, where the suspension device A, the suspension device B, the suspension device C, and the suspension device D form a set of lever - type self - counterweight structures, two pairs of the suspension device E form a set of self - counterweight structures, each side's suspension device F forms a set of self - counterweight structures, and two of each side's suspension device G form a set of self - counterweight structures; S4. Install the working wire rope and connect the construction platform; S5. Install the safety monitoring and early warning system, and monitor the safety status of lifting the construction platform through the safety monitoring and early warning system; S6. After the construction is completed, disassemble the self - assembled long - cantilever suspension mechanism for the cable tower in reverse order.

[0014] Preferably, determine the setting relationship between the first suspension rod and the second suspension rod, and the setting relationship between the third suspension rod and the fourth suspension rod through the following method. First, obtain the cable tower limb structure parameters. Assume that the side where the two limbs are close to each other is a vertical plane parallel to each other, and the cross - sectional dimensions change on the other sides. The transverse thickness in the horizontal plane corresponding to the highest position of the construction platform to be stopped at the top of the cable tower limb is a 1 , the longitudinal thickness in the bridge direction is b 1 , the transverse thickness in the horizontal plane corresponding to the lowest position of the construction platform to be stopped at the top of the cable tower limb is a 2 , the longitudinal thickness in the bridge direction is b 2 , the full - height of the up - and - down movement of the construction platform is h ; The length of the third suspension rod is l F , the length of the fourth suspension rod is l G , then the included angle of the third suspension rod and the fourth suspension rod in the horizontal plane is , the length of the fourth suspension rod ; The length of the first suspension rod is l A , the length of the second suspension rod is l E , then the angle between the first suspension rod and the second suspension rod in the horizontal plane is , the length of the second suspension rod .

[0015] The present invention at least includes the following beneficial effects: the self-weighted assembled long cantilever suspension mechanism for the cable tower of the present invention and the construction method thereof are provided with a middle suspension assembly and a side suspension assembly, the middle suspension assembly includes a suspension device A, a suspension device B, a suspension device C, a suspension device D, and a suspension device E respectively fixed on the top of the tower, the side suspension assembly includes a suspension device F and a suspension device G arranged in sequence along a direction away from the center of the cable tower, the suspension device A and the suspension device C form a lever-type structure, counterweighting each other, the suspension device B and the suspension device D form a lever-type structure, counterweighting each other, and are connected to each other as a whole, the suspension device A, the suspension device B, the suspension device C, and the suspension device D form a group of lever-type self-weighted structures as a whole, the two pairs of suspension devices E are arranged relatively along the bridge direction to form a group of self-weighted structures, and the The suspension device F forms a group of self-balanced weight structures. The two suspension devices G on each side are relatively biased along the bridge direction to form a group of self-balanced weight structures, and finally form a self-balanced weight overall structure. All suspension devices A, suspension devices B, suspension devices C, suspension devices D, suspension devices E, suspension devices F, and suspension devices G jointly suspend the two construction platforms connected to the two cable tower branches. The mass distribution of the structure itself can make the center of gravity of the entire system reach a stable state, thereby realizing the self-balanced weight function, optimizing the force on the structure, improving the overall strength, rigidity and stability of the structure, and effectively lifting the load on the suspension mechanism. Due to the self-balanced weight structure, the extension length of the front beam exceeds that of the traditional suspension mechanism, breaking through the problem of limited extension length of the front beam of the suspension mechanism, and solving the problem of the suspension mechanism adapting to the construction of variable-section cable towers.

[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the self-weighted assembled long cantilever suspension mechanism for the cable tower of the present invention installed on the top of the cable tower; Figure 2 It is a top view of the structure of the self-weighted assembled long cantilever suspension mechanism for the cable tower of the present invention installed on the top of the cable tower; Figure 3 This is an enlarged structural diagram of the self-counterweight assembled long cantilever suspension mechanism for the cable tower of the present invention installed on the top of the cable tower; Figure 4A top view of the construction platform for the cable tower of the present invention; Figure 5 It is a schematic diagram of the structure of the suspension device A, the suspension device B, the suspension device C, and the suspension device D of the present invention; Figure 6 It is a schematic structural diagram of the suspension device E of the present invention; Figure numbers in the specification: 1. Suspension device A, 2. Suspension device B, 3. Suspension device C, 4. Suspension device D, 5. Suspension device E, 6. Suspension device F, 7. Suspension device G, 8. Outer platform, 9. Inner platform, 10. Front platform, 11. Rear platform, 12. Basket bolt, 13. Working wire rope, 14. First vertical base, 15. First suspension rod, 16. First cross bar, 17. First longitudinal rod, 18. First diagonal rod, 19. Second vertical base, 20. Second suspension rod, 21. Second diagonal rod, 22. Second longitudinal rod, 23. Third vertical base, 24. Third suspension rod, 25. Third diagonal rod, 26. Fourth vertical base, 27. Fourth suspension rod, 28. Fourth longitudinal rod, 29. Fourth diagonal rod, 30. Cable tower, 31. First platform, 32. Second platform, 33. Limb, 34. First wall attachment, 35. Second wall attachment. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0019] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] like Figure 1-6 As shown, the present invention provides a self-weighted assembled long cantilever suspension mechanism for a cable tower, which is used to suspend and support a construction platform arranged outside two branches 33 of a herringbone cable tower 30, and the construction platform of each branch 33 includes a front platform 10, an outer platform 8, a rear platform 11 and an inner platform 9 close to the center of the cable tower 30 connected in sequence, including: The middle suspension assembly includes suspension devices A 1, B 2, C 3, D 4, and E 5 respectively fixed on the top of the tower. Among them, suspension devices A 1 and B 2 are located on the front side of the top of the tower and are symmetrically connected with respect to the center line of the top of the tower. Suspension devices C 3 and D 4 are located on the rear side of the top of the tower and are symmetrically connected with respect to the center line of the top of the tower. Suspension device A 1 and suspension device C 3 are connected as a whole along the same longitudinal bridge direction. Suspension device B 2 and suspension device D 4 are connected as a whole along the same longitudinal bridge direction. A pair of suspension devices E 5 are arranged in a figure-eight shape respectively facing each branch 33 of the cable tower 30. Each pair of figure-eight suspension devices E 5 extend towards the front and rear sides of the cable tower 30 respectively, and are connected as a whole between each pair of figure-eight suspension devices E 5. The outer ends of all suspension devices A 1, B 2, C 3, D 4, and E 5 are set as suspension ends and respectively project out of the corresponding front or rear side of the cable tower 30; The side suspension assembly is fixed on the top of the tower and a set is symmetrically arranged on both sides corresponding to the branch 33 of the cable tower 30 of the middle suspension assembly. Each set includes suspension devices F 6 and G 7 arranged in sequence along the direction away from the center of the cable tower 30. Suspension device F 6 extends along the longitudinal bridge direction and its two ends respectively project out of the corresponding front or rear side of the cable tower 30 to form suspension ends. A pair of suspension devices G 7 extend horizontally outward in a figure-eight shape towards the outer platform 8 corresponding to the branch 33 of the cable tower 30, and their outer ends respectively project out of the cable tower 30 to form suspension ends; The two suspension ends of each pair of suspension devices G 7 are used to suspend and connect the outer platform 8 of the corresponding branch 33. The two suspension ends of each suspension device F 6 are used to suspend and connect the inner platform 9 of the corresponding branch 33. The two suspension ends of the suspension device A 1 and the suspension device E 5 on the same side are used to suspend and connect the front platform 10 of the corresponding branch 33. The two suspension ends of the suspension device B 2 and the suspension device E 5 on the same side are used to suspend and connect the front platform 10 of the corresponding branch 33. The two suspension ends of the suspension device C 3 and the suspension device E 5 on the same side are used to suspend and connect the rear platform 11 of the corresponding branch 33. The two suspension ends of the suspension device D 4 and the suspension device E 5 on the same side are used to suspend and connect the rear platform 11 of the corresponding branch 33 of the cable tower 30.

[0021] Lifting points and hoisting machines are arranged at corresponding positions on the construction platform. Steel wires are led out from the hoisting machines and connected to the suspension devices A 1, B 2, C 3, D 4, E 5, F 6, and G 7 at the corresponding upper positions. The rise or fall of the construction platform is realized through the hoisting machines, and its functions are conventional and will not be elaborated here. Set the front and rear directions along the longitudinal bridge direction, combined with Figure 2The tower 30 shown has limbs 33 in four directions: front, back, left, and right. The inner platform 9 is located between the two limbs 33, and the outer platform 8 is located on the left or right side of the tower 30. A front platform 10, an outer platform 8, a rear platform 11, and an inner platform 9 are detachably connected to the outside of the limbs 33 to form a complete construction platform. The two limbs 33, a total of two construction platforms, are respectively connected to the upper middle suspension component and a side suspension component to achieve self-balanced weight balance.

[0022] After the installation positions of the suspension device A1, the suspension device B2, the suspension device C3, the suspension device D4, the suspension device E5, the suspension device F6, and the suspension device G7 are allocated, arranged, installed, and fixed, the suspension device A1 and the suspension device C3 form a lever-type structure, counterweighting each other, and the suspension device B2 and the suspension device D4 form a lever-type structure, counterweighting each other, and are connected to each other as a whole. The suspension device A1, the suspension device B2, the suspension device C3, and the suspension device D4 form a group of lever-type self-counterweight structures as a whole. The two pairs of suspension devices E5 are relatively biased along the bridge direction to form a group of self-counterweight structures. The suspension devices F6 on each side form a group of self-counterweight structures. The two suspension devices G7 on each side are relatively biased along the bridge direction to form a group of self-counterweight structures, and finally form a self-counterweight overall structure. All the suspension devices A1, the suspension device B2, the suspension device C3, the suspension device D4, the suspension device E5, the suspension device F6, and the suspension device G7 are relatively biased along the bridge direction to form a group of self-counterweight structures. 7 jointly suspends and connects the two construction platforms on the limbs 33 of the two cable towers 30. The mass distribution of the structure itself can make the center of gravity of the entire system reach a stable state, thereby realizing the self-balanced weight function, making the structure optimally stressed, improving the overall strength, rigidity and stability of the structure, and effectively lifting the load on the suspension mechanism. Due to the self-balanced weight structure, the extension length of the front beam exceeds that of the traditional suspension mechanism, breaking through the problem of the limited extension length of the front beam of the suspension mechanism, and solving the problem of the suspension mechanism adapting to the construction of the variable-section cable tower 30.

[0023] In another technical solution, Figure 1-3 As shown in Figure 5, each of the suspension devices A1, the suspension device B2, the suspension device C3, the suspension device D4, the suspension device E5, the suspension device F6, and the suspension device G7 is fixed with an anchor plate and a basket bolt 12 is arranged on the top facing the corresponding suspension end, each basket bolt 12 is connected to a reinforcing wire rope facing the corresponding suspension end, and a guide pulley is arranged on each of the suspension ends, to which a working wire rope 13 and a safety wire rope are anchored and connected respectively through the anchor plate, the working wire rope passes around the corresponding guide pulley and then passes into the rope inlet of the hoist arranged on the construction platform below, and the safety wire rope passes around the corresponding guide pulley and then passes into the rope inlet of the safety lock arranged on the construction platform below.

[0024] The turnbuckle 12, guiding pulley, reinforcing steel wire rope, working steel wire rope and safety steel wire rope are purchased finished products, and are installed and connected by using structures such as pin shafts, ear plates and bolts. A C-shaped ear frame is arranged outside the guiding pulley. The turnbuckle 12 is arranged at the top of the suspension device located within the cross-section 30 of the cable tower. The working steel wire rope and the safety steel wire rope bypass the guiding pulley and pass through the C-shaped ear frame for limiting and guiding, and are connected to the hoist below. The up and down movement of the construction platform is realized by controlling each hoist.

[0025] In another technical solution, as Figure 1-3 As shown in FIGS. 5, each of the suspension devices A 1, suspension device B 2, suspension device C 3, and suspension device D 4 respectively includes a first vertical base 14 and a first suspension rod 15 horizontally connected to the middle of the first vertical base 14. A first cross bar 16 is respectively connected between the first suspension rods 15 of the suspension device A 1 and the suspension device B 2, and between the first suspension rods 15 of the suspension device C 3 and the suspension device D 4. A first longitudinal rod 17 is coaxially connected and arranged between the first suspension rods 15 of the suspension device A 1 and the suspension device C 3, and between the first suspension rods 15 of the suspension device B 2 and the suspension device D 4. The bottom of the first vertical base 14 is fixed to the top surface of the tower top. The turnbuckle 12 is arranged at the top of the first vertical base 14. A first diagonal rod 18 is connected between the top of the first vertical base 14 and one end of the corresponding first suspension rod 15 close to the first longitudinal rod 17; Each of the suspension devices E 5 includes a second vertical base 19 and a second suspension rod 20 horizontally connected to the middle of the second vertical base 19. The bottom of the second vertical base 19 is fixed to the top surface of the tower top. A second diagonal rod 21 is connected between the top of the second vertical base 19 and one end of the corresponding second suspension rod 20 close to the center of the cable tower 30. The turnbuckle 12 is arranged at the top of the second vertical base 19. A second longitudinal rod 22 is connected between the two second suspension rods 20 of each pair of the eight-shaped suspension devices E 5.

[0026] Structures such as suspension rods, bases, longitudinal rods, and diagonal rods can respectively adopt a steel-manganese combined structure with multiple square tubes sleeved, and are respectively connected into one body by bolts. The first suspension rods 15 of the suspension device A 1 and the suspension device C 3 are connected into one body through the first longitudinal rod 17, and the two suspension ends are symmetrically arranged, forming a lever-type self-counterweight structure form. The first suspension rods 15 of the suspension device B 2 and the suspension device D 4 are connected into one body through the first longitudinal rod 17, and the two suspension ends are symmetrically arranged. When affected by external interference, the suspension device can return to the original balance state through the mass of each section and the mutual restraint between each rod, forming a lever-type self-counterweight structure form.

[0027] In another technical solution, asFigure 1-3 As shown in Fig. 6, the second suspension rods 20 of the two pairs of eight-shaped suspension devices E5 are staggered in height and arranged adjacent to each other. The two second suspension rods 20 facing the same side of the cable tower 30 are cross-arranged and fixedly connected at the crossing point. The heights of the second vertical bases 19 of adjacent suspension devices E5 are set differently, so that the two second diagonal rods 21 are staggered in height.

[0028] In another technical solution, as Figure 1-3 shown in Fig., the suspension device F6 includes a third vertical base 23 and a third suspension rod 24 horizontally connected to the middle of the third vertical base 23. Both ends of the third suspension rod 24 extend to the front and rear sides corresponding to the cable tower 30 to form two suspension ends. The bottom of the third vertical base 23 is fixed to the top surface of the tower top. A third diagonal rod 25 is connected between the top of the third vertical base 23 and one end of the corresponding third suspension rod 24 close to the center of the cable tower 30. The flower basket bolt 12 is arranged at the top of the third vertical base 23; Each suspension device G7 includes a pair of fourth vertical bases 26 and a fourth suspension rod 27 horizontally connected to the middle of each fourth vertical base 26. The two fourth suspension rods 27 extend outward in an eight-shaped manner. The bottom of the fourth vertical base 26 is fixed to the top surface of the tower top. A fourth diagonal rod 29 is connected between the top of the fourth vertical base 26 and one end of the corresponding fourth suspension rod 27 close to the center of the cable tower 30. The flower basket bolt 12 is arranged at the top of the fourth vertical base 26. A fourth longitudinal rod is connected between the two fourth suspension rods 27.

[0029] The suspension device F6 is an integral structure, and the two suspension ends are symmetrically arranged, forming a lever-type self-counterweight structure form. The fourth suspension rods 27 of the two suspension devices G7 are connected as a whole through the fourth longitudinal rod, and the two suspension ends are symmetrically arranged, forming a self-counterweight structure form.

[0030] In another technical solution, as Figure 1-4 shown in Fig., a first-level platform 31 and two second-level platforms 32 are sequentially formed downward from the top of the cable tower 30. The two second-level platforms 32 are symmetrically arranged on both sides of the first-level platform 31 corresponding to the branch 33 of the cable tower 30. Among them, the suspension device A1, the suspension device B2, the suspension device C3, the suspension device D4, and the suspension device E5 are fixed on the first-level platform 31. A set of the suspension device F6 and the suspension device G7 are fixed on each second-level platform 32. A first wall-attaching member 34 is connected between the third suspension rod 24 and the corresponding outer side wall of the first-level platform 31. A second wall-attaching member 35 is connected between the fourth suspension rod 27 and the corresponding outer side wall of the first-level platform 31.

[0031] The first wall attachment 34 and the second wall attachment 35 can be fixedly connected by steel components such as connecting pipes, ear plates, and bolts to form the connection between the suspension devices F 6 or G and the cable tower 30 laterally, improving the stress-bearing capacity of the suspension devices F 6 and G 7.

[0032] In another technical solution, as Figure 1-3 shown, it further includes a safety monitoring and early warning system, which includes: An integrated wind speed and wind direction sensor, which is arranged on the tops of the suspension devices A 1, B 2, C 3, D 4, E 5, F 6, and G 7 to detect the wind speed and wind direction at the corresponding positions; A camera, which is arranged on the suspension devices A 1, B 2, C 3, D 4, E 5, F 6, and G 7 to photograph the upper end of the working wire rope 13; A pressure sensor, which is arranged on each of the suspension ends to sense the weight change of the working wire rope 13 pulling the load; A displacement sensor, which is arranged on each of the suspension ends to sense the displacement change of the suspension end; An inclination sensor, which is arranged on the suspension devices A 1, B 2, C 3, D 4, E 5, F 6, and G 7 near the corresponding suspension ends to detect the change in the inclination angle; A tension sensor, which is installed on the working wire rope 13 to detect the tension of the working wire rope 13; A control terminal, which includes a data acquisition unit, a central processing unit, and an alarm device that are electrically connected in sequence. The data acquisition unit is respectively communicatively connected to the integrated wind speed and wind direction sensor, the camera, the pressure sensor, the displacement sensor, the inclination sensor, and the tension sensor, and is used to obtain the corresponding data signals and transmit them to the central processing unit. The central processing unit is used to preset safety thresholds and compare the received data with the corresponding safety thresholds. When the safety thresholds are exceeded, the alarm device is triggered to issue an alarm.

[0033] For the specific setting structure of the suspension device, the wind speed and direction integrated sensor is arranged on the top of the vertical base corresponding to each suspension device, and is firmly connected to the top surface of the vertical base by screws. The other end is connected to the control terminal through wires. The camera is arranged above the suspension rod corresponding to the suspension device and is connected by screws. The pressure sensor is installed at the part of each suspension device close to the suspension end, which can sense the weight change of the load, and the other end is connected to the control terminal. The displacement sensor is installed at the suspension end, which can accurately monitor the minute change of displacement and convert the displacement data into a signal recognizable by the control terminal. A plurality of inclination sensors are arranged on the suspension rod of the suspension device. When the angle of the suspension device changes due to various factors, it can quickly detect the change of the inclination angle and convert it into an electrical signal. A tension sensor is installed on the steel wire rope to detect the tension of the working steel wire rope 13, so as to judge the tightness of the working steel wire rope 13. Combined with visual sensors such as cameras, image recognition technology is used to observe the wear condition of the surface of the working steel wire rope 13. The signals monitored by these sensors will be transmitted to the data acquisition unit. After the data acquisition unit amplifies and filters the signals, etc., it will be transmitted to the central processing unit. The central processing unit will compare and analyze the received data with the pre-set safety threshold value. Once the data exceeds the safety range, the alarm device will be triggered. By setting up the safety monitoring and early warning system, the stress state of the suspension device can reach a controllable state.

[0034] The present invention also provides a construction method for a self-assembled and re-assembled long cantilever suspension mechanism for a cable tower, in combination with Figure 1-6 as shown, including the following steps: S1. Fabricate the components of the suspension device A 1, the suspension device B 2, the suspension device C 3, the suspension device D 4, the suspension device E 5, the suspension device F 6, and the suspension device G 7 in sections, and transport them to the site after trial assembly; each suspension device and the square tubes, front and rear hanging plates, ear plates, etc. used for connection are processed in the factory, and the remaining components such as bolts are purchased from the market.

[0035] S2. Layout the installation positions of the suspension device A 1, the suspension device B 2, the suspension device C 3, the suspension device D 4, the suspension device E 5, the suspension device F 6, and the suspension device G 7 on the cable tower 30, and drill and implant steel bars.

[0036] S3. Fix and install the suspension device A 1, the suspension device B 2, the suspension device C 3, the suspension device D 4, the suspension device E 5, the suspension device F 6, and the suspension device G 7 on the pylon 30. The suspension device F 6 and the suspension device G 7 are anchored to the side wall of the pylon 30. Among them, the suspension device A 1, the suspension device B 2, the suspension device C 3, and the suspension device D 4 form a set of lever - type self - counterweight structures, two pairs of the suspension device E 5 form a set of self - counterweight structures, each side's suspension device F 6 forms a set of self - counterweight structures, and two of each side's suspension device G 7 form a set of self - counterweight structures; The anchoring device includes a bending plate and a special inverted - cone chemical anchor bolt. A bending plate and a special inverted - cone chemical anchor bolt are used in combination to connect between the vertical base of each suspension device and the pylon 30. The bending plate is processed and manufactured in the factory. During installation, the bending plate is fixed to the vertical base of the suspension device, and the special inverted - cone anchor bolt passes through the reserved hole of the bending plate to connect with the pylon 30. The special inverted - cone chemical anchor bolt is a finished product purchased from the market. First, roughen the vertical base of the pylon 30, then drill and clean the hole, secondly, inject the anchoring glue, and finally, implant the rebar. After the anchor bolt and the anchoring glue are bonded together, install the vertical base of the suspension device. The suspension device F 6, the suspension device G 7, the first attachment member 34, and the second attachment member 35 are also connected to the facade of the pylon 30 using special inverted - cone chemical anchor bolts. The anchor bolts are connected to the pylon 30 through the reserved holes of the anchor plate welded to the lower part of the connecting wall pipe.

[0037] S4. Install the working steel wire rope 13 and connect the construction platform; the lower end of the working steel wire rope 13 passes through the rope inlet of the hoist on the construction platform.

[0038] S5. Install the safety monitoring and early - warning system, and monitor the safety status of lifting the construction platform through the safety monitoring and early - warning system.

[0039] S6. After the construction is completed, dismantle the self - assembled and re - configured long - cantilever suspension mechanism for the pylon 30 in reverse order.

[0040] The construction method of the self - assembled and re - configured long - cantilever suspension mechanism for the pylon in the present invention has a relatively simple installation method for the suspension devices. The positions of each suspension device are reasonably arranged, the structural stress is clear, self - counterweight balance can be achieved, and the controllability of the installation and construction status can be realized by setting up the safety monitoring and early - warning system.

[0041] In another technical solution, such as Figure 1-3As shown, the setting relationships between the first suspension rod 15 and the second suspension rod 20, and between the third suspension rod 24 and the fourth suspension rod 27 are determined as follows. First, the structural parameters of the tower column 30's branch 33 are obtained. Assuming that the sides of the two branches 33 close to each other are vertical planes parallel to each other, and the cross-sectional dimensions of the other sides change. The transverse thickness in the horizontal plane corresponding to the highest position of the construction platform to be stayed at the top of the tower column 30's branch 33 is a 1 , and the longitudinal thickness is b 1 . The transverse thickness in the horizontal plane corresponding to the lowest position of the construction platform to be stayed at the top of the tower column 30's branch 33 is a 2 , and the longitudinal thickness is b 2 . The full height of the up and down movement of the construction platform is h ; The length of the third suspension rod 24 is l F , and the length of the fourth suspension rod 27 is l G . Then the included angle between the third suspension rod 24 and the fourth suspension rod 27 in the horizontal plane is , and the length of the fourth suspension rod 27 is ; The length of the first suspension rod 15 is l A , and the length of the second suspension rod 20 is l E . Then the included angle between the first suspension rod 15 and the second suspension rod 20 in the horizontal plane is , and the length of the second suspension rod 20 is .

[0042] The lengths of the first suspension rod 15 and the third suspension rod 24 are set according to the weight and width of the corresponding part of the construction platform, and it is only necessary to ensure the suspension safety. Based on the variable diameter state of the tower column 30's branch 33, the second suspension rod 20 and the fourth suspension rod 27, which are arranged in an angle relative to the longitudinal direction and are arranged outward in a shape of an eight-character, are correspondingly set for cooperative arrangement, which can ensure the stability and load-bearing capacity of the hoisting of the entire construction platform.

[0043] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, other modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. A self-weighted assembled long cantilever suspension mechanism for a cable tower, used for suspending and supporting a construction platform arranged outside two branches of the cable tower, each branch construction platform comprising a front platform, an outer platform, a rear platform and an inner platform close to the center of the cable tower connected in sequence, characterized in that: include: A middle suspension assembly, comprising a suspension device A, a suspension device B, a suspension device C, a suspension device D, and a suspension device E respectively fixed to the tower top, wherein the suspension device A and the suspension device B are located at the front side of the tower top and are symmetrically connected relative to the center line of the tower top, the suspension device C and the suspension device D are located at the rear side of the tower top and are symmetrically connected relative to the center line of the tower top, the suspension device A and the suspension device C are connected as a whole along the same longitudinal direction, the suspension device B and the suspension device D are connected as a whole along the same longitudinal direction, a pair of suspension devices E are arranged along an eight-shaped shape toward each limb of the cable tower, each pair of eight-shaped suspension devices E respectively extends toward the front and rear sides of the cable tower, each pair of eight-shaped suspension devices E are connected as a whole, and the outer ends of all the suspension devices A, suspension devices B, suspension devices C, suspension devices D, and suspension devices E are set as suspension ends and are respectively cantilevered out of the corresponding front or rear side of the cable tower; A side suspension assembly is fixed on the top of the tower and is symmetrically arranged in a group on both sides of the middle suspension assembly corresponding to the cable tower limb. Each group includes a suspension device F and a suspension device G arranged in sequence in a direction away from the center of the cable tower. The suspension device F is extended along the bridge direction and its two ends are respectively cantilevered out of the front side or the rear side corresponding to the cable tower to form a suspension end. A pair of suspension devices G are horizontally extended outward along an eight-shaped shape toward the outer platform corresponding to the cable tower limb and their outer ends are respectively cantilevered out of the cable tower to form a suspension end. The two hanging ends of each pair of suspension devices G are used to hang and connect the outer platform of the corresponding limb, the two hanging ends of each suspension device F are used to hang and connect the inner platform of the corresponding limb, the two hanging ends of the suspension device A and the suspension device E on the same side are used to hang and connect the front platform of the corresponding limb, the two hanging ends of the suspension device B and the suspension device E on the same side are used to hang and connect the front platform of the corresponding limb, the two hanging ends of the suspension device C and the suspension device E on the same side are used to hang and connect the rear platform of the corresponding limb, and the two hanging ends of the suspension device D and the suspension device E on the same side are used to hang and connect the rear platform of the corresponding limb of the tower.

2. The self-counterweight assembled long cantilever suspension mechanism for a cable tower as claimed in claim 1, characterized in that: An anchor plate is fixed on each of the suspension devices A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G, and a basket bolt is arranged on the top facing the corresponding suspension end. Each basket bolt is connected to a reinforcing wire rope facing the corresponding suspension end. A guide pulley is arranged on each of the suspension ends, and a working wire rope and a safety wire rope are anchored and connected respectively through the anchor plate. The working wire rope passes around the corresponding guide pulley and then passes into the rope inlet of the hoist arranged on the construction platform below. The safety wire rope passes around the corresponding guide pulley and then passes into the rope inlet of the safety lock arranged on the construction platform below.

3. The self-counterweight assembled long cantilever suspension mechanism for a cable tower as claimed in claim 2, characterized in that: The suspension device A, the suspension device B, the suspension device C, and the suspension device D each include a first vertical base, a first suspension rod horizontally connected to the middle of the first vertical base, a first cross rod is connected between the first suspension rod of the suspension device A and the first suspension rod of the suspension device B, and between the first suspension rod of the suspension device C and the first suspension rod of the suspension device D, respectively, a first longitudinal rod is coaxially connected between the first suspension rod of the suspension device A and the first suspension rod of the suspension device C, and between the first suspension rod of the suspension device B and the first suspension rod of the suspension device D, the bottom of the first vertical base is fixed to the top surface of the tower top, the basket bolt is arranged on the top of the first vertical base, and a first diagonal rod is connected to the top of the first vertical base and the end of the corresponding first suspension rod close to the first longitudinal rod; Each of the suspension devices E includes a second vertical base and a second suspension rod horizontally connected to the middle of the second vertical base. The bottom of the second vertical base is fixed to the top surface of the tower top. The top of the second vertical base and the corresponding second suspension rod are connected to the end close to the center of the tower with a second diagonal rod. The basket bolt is arranged on the top of the second vertical base, and a second longitudinal rod is connected between the two second suspension rods of each pair of figure-eight suspension devices E.

4. The self-counterweight assembled long cantilever suspension mechanism for a cable tower as claimed in claim 3, characterized in that: The second suspension rods of the two pairs of the figure-eight suspension devices E are staggered in height and arranged adjacent to each other, and the two second suspension rods facing the same side of the cable tower are cross-arranged and fixedly connected at the intersection.

5. The self-counterweight assembled long cantilever suspension mechanism for a cable tower as claimed in claim 2, characterized in that: The suspension device F comprises a third vertical base, a third suspension rod horizontally connected to the middle of the third vertical base, the two ends of the third suspension rod respectively extend to the front and rear sides corresponding to the cable tower to form two suspension ends, the bottom of the third vertical base is fixed to the top surface of the tower top, the top of the third vertical base and the corresponding end of the third suspension rod close to the center of the cable tower are connected with a third oblique rod, and the top of the third vertical base is provided with the basket bolt; Each of the suspension devices G includes a pair of fourth vertical bases and a fourth suspension rod horizontally connected to the middle of each fourth vertical base, the two fourth suspension rods are arranged to extend outward in an eight-shaped shape, the bottom of the fourth vertical base is fixed to the top surface of the tower top, the top of the fourth vertical base and the corresponding fourth suspension rod are connected to the end close to the center of the tower with a fourth diagonal rod, the top of the fourth vertical base is provided with the basket bolt, and a fourth longitudinal rod is connected between the two fourth suspension rods.

6. The self-counterweight assembled long cantilever suspension mechanism for a cable tower as claimed in claim 5, characterized in that: A primary platform and two secondary platforms are formed in sequence from the top of the cable tower downwards, and the two secondary platforms are symmetrically arranged on both sides of the first-level platform corresponding to the cable tower limbs, wherein the suspension device A, the suspension device B, the suspension device C, the suspension device D, and the suspension device E are fixed on the primary platform, and a group of the suspension device F and the suspension device G are fixed on each secondary platform, a first wall attachment is connected between the third suspension rod and the corresponding outer side wall of the primary platform, and a second wall attachment is connected between the fourth suspension rod and the corresponding outer side wall of the primary platform.

7. The self-counterweight assembled long cantilever suspension mechanism for a cable tower as claimed in claim 2, characterized in that: It also includes a safety monitoring and early warning system, which includes: An integrated wind speed and wind direction sensor, which is arranged on the top of the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G, and is used to detect the wind speed and wind direction at the corresponding position; A camera is arranged on the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G, and is used to photograph the upper end of the working wire rope; A pressure sensor is arranged on each of the suspension ends and is used to sense the weight change of the object pulled by the working wire rope; A displacement sensor, arranged on each of the suspension ends, for sensing a displacement change of the suspension end; An inclination sensor is arranged on each of the suspension devices A, B, C, D, E, F, and G near the corresponding suspension end, and is used to detect changes in the inclination angle; A tension sensor, which is installed on the working steel wire rope and is used to detect the tension of the working steel wire rope; The control terminal includes a data acquisition unit, a central processing unit, and an alarm device which are electrically connected in sequence. The data acquisition unit is respectively connected to the integrated wind speed and direction sensor, the camera, the pressure sensor, the displacement sensor, the tilt sensor, and the tension sensor for communication, and is used to obtain corresponding data signals and transmit them to the central processing unit. The central processing unit is used to preset a safety threshold and compare the received data with the corresponding safety threshold. When the safety threshold is exceeded, the alarm device is triggered to sound an alarm.

8. The construction method of the self-counterweight assembled long cantilever suspension mechanism for a cable tower as claimed in claim 7, characterized in that: The steps include: S1, manufacturing the components of the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G in sections, and transporting them to the site after trial assembly; S2, setting out the installation positions of the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G at the cable tower, and drilling holes and planting reinforcements; S3, the suspension device A, the suspension device B, the suspension device C, the suspension device D, the suspension device E, the suspension device F, and the suspension device G are fixedly installed on the cable tower, wherein the suspension device A, the suspension device B, the suspension device C, and the suspension device D form a group of lever-type self-balanced weight structures, two pairs of the suspension devices E form a group of self-balanced weight structures, the suspension devices F on each side form a group of self-balanced weight structures, and the two suspension devices G on each side form a group of self-balanced weight structures; S4, installing the working wire rope and connecting the construction platform; S5, installing the safety monitoring and early warning system, and monitoring and improving the safety status of the construction platform through the safety monitoring and early warning system; S6. After the construction is completed, the self-counterweight assembled long cantilever suspension mechanism for the cable tower is dismantled in reverse order.

9. The construction method of the self-counterweight assembled long cantilever suspension mechanism for a cable tower as claimed in claim 5, characterized in that: The setting relationship between the first suspension rod and the second suspension rod, and the setting relationship between the third suspension rod and the fourth suspension rod are determined in the following manner: first, the structural parameters of the cable tower limbs are obtained, assuming that the side where the two limbs are close to each other is a vertical plane parallel to each other, and the other sides have a cross-sectional size change. The transverse bridge thickness in the horizontal plane corresponding to the highest position of the construction platform to be stopped at the top of the cable tower limb is a 1 , the thickness along the bridge is b 1 The transverse bridge thickness in the horizontal plane corresponding to the lowest position of the construction platform to be stopped at the top of the cable tower branch is a 2 , the thickness along the bridge is b 2 , the total height of the construction platform moving up and down is h ; The length of the third suspension rod is l F , the length of the fourth suspension rod is l G , then the angle between the third suspension rod and the fourth suspension rod in the horizontal plane is , the length of the fourth suspension rod ; The length of the first first suspension rod is l A , the length of the second suspension rod is l E , then the angle between the first suspension rod and the second suspension rod in the horizontal plane is , the length of the second suspension rod .

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