Double-flat-arm intelligent floor derrick and mounting and dismounting method thereof

Abstract

The invention discloses a double-flat-arm intelligent floor derrick and a mounting and dismounting method thereof, and relates to the technical field of building and power equipment, and the double-flat-arm intelligent floor derrick comprises a tower body, a jacking device assembly which sleeves the tower body and is used for adding and reducing sections, and two sets of flat arm hoisting systems which are symmetrically mounted on two sides of a tower head at the top of the tower body. The flat arm hoisting system comprises a cargo boom, a hoisting system and a traction system. The mounting method comprises the following steps: mounting the initial standard knot group, sleeving and fixing the jacking device assembly, mounting the upper structure and the two sets of cargo booms, jacking the tower body section by section through the jacking device assembly, and introducing new standard knots to a preset height. The dismounting method comprises the following steps: dismounting the standard knots section by section, and sequentially dismounting the trailer wagon, the lifting hook and the cargo boom by re-winding the lifting steel wire rope and assisting by the pulley. By optimizing the structural design and the mounting and dismounting process, the mounting and dismounting efficiency and safety of the derrick can be improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of construction and electric power construction equipment, and in particular to a double-horizontal-arm intelligent ground-mounted holding pole and an installation and disassembly method thereof. Background Art

[0002] In the construction and power sectors, floor-mounted jibs are a crucial lifting device widely used in the construction of high-rise buildings, the power industry, and other infrastructure. Their primary function is to transfer construction materials and equipment through a lifting system, thereby meeting the demands of efficient construction sites. However, traditional floor-mounted jibs present numerous challenges during installation and removal, impacting construction efficiency and posing significant safety risks.

[0003] Traditional ground-mounted booms usually require long-term cooperation with large lifting equipment when installing standard sections. The operation process is cumbersome and time-consuming. Especially in high-altitude working environments, the degree of manual participation is high, the labor intensity is high, and safety accidents are easily caused by improper operation. In addition, the structural design of existing booms still has shortcomings in terms of balance and operating efficiency. Especially when the two arms work together, it is often difficult to achieve efficient and stable construction operations. At the same time, during the disassembly process, for the disassembly and lowering of large components such as crane arms, traction trolleys and hooks, traditional methods usually require complex operating steps and additional auxiliary equipment, further increasing the difficulty of the operation and the pressure on safety assurance.

[0004] Existing technologies for raising and lowering masts also have limitations. For example, during the raising process, the lack of precise support and guidance mechanisms can easily lead to structural sway or instability, compromising the safety and reliability of the overall construction. Furthermore, during disassembly, the lack of specially designed auxiliary devices and optimized wire rope routing makes the disassembly and lowering of key components inefficient and poses significant safety risks.

[0005] Therefore, designing a floor-mounted mast and its supporting method with a more optimized structure, more efficient installation and removal, and safer and more convenient operation has become a pressing technical challenge in this field. An ideal solution should significantly improve installation and removal efficiency while ensuring construction safety, while reducing reliance on large auxiliary equipment, minimizing the amount of overhead work, and optimizing the overall structural design to enhance operational flexibility and stability. Summary of the Invention

[0006] The present invention provides a double-horizontal-arm intelligent floor-standing boom and an installation and disassembly method thereof, so as to solve the technical problems of high complexity, long time consumption and high risk of high-altitude operation in the installation and disassembly process of the existing floor-standing boom.

[0007] The present invention provides a double-horizontal-arm intelligent ground-mounted holding boom, which includes a tower body, a lifting device assembly, and two sets of horizontal-arm lifting systems. The tower body includes, from bottom to top, anchoring feet, a standard section group, a lifting section, a slewing assembly, a slewing tower body, and a tower head. The anchoring feet are fixed to a fixed foundation, and are used to firmly connect the holding boom as a whole to the ground; the standard section group is composed of a plurality of standard sections connected in a detachable manner, and each standard section is provided with an upper step and a lower step to cooperate with the locking boots in the lifting device assembly to realize the operation of adding and subtracting sections; the lifting section is located at the top of the standard section group, and is used to support the upper structure; the slewing assembly is installed above the lifting section, and is used to realize the rotation function; the slewing tower body connects the slewing assembly and the tower head, providing additional height and stability; the tower head is located at the top, and is used as an installation base for the crane arm and other components.

[0008] Furthermore, the jacking device assembly includes a lower casing section, an upper casing section, a lower stop shoe, an upper stop shoe, an introduction platform, and an introduction trolley. The bottom of the lower casing section is fixed to a fixed foundation and is sleeved on the outside of the tower body; the upper casing section is installed on the top of the lower casing section via a jacking cylinder and can be raised and lowered; the lower stop shoe and the upper stop shoe are respectively installed on the lower casing section and the upper casing section, and are used to cooperate with the steps of the standard section during the jacking or lowering process; the introduction platform is installed at a position close to the bottom of the lower casing section, and the introduction trolley is installed on the introduction platform, and is used to carry the standard section to be installed during the section addition process and introduce it into the jacking device assembly.

[0009] Specifically, the two horizontal arm hoisting systems are symmetrically mounted on opposite sides of the tower. Each horizontal arm hoisting system includes a boom, a hoisting system, and a traction system. The base of the boom is pivotally mounted to the bottom of the tower head. The hoisting system includes a hoisting power unit, a hoisting wire rope, a hook, and a traction trolley for lifting heavy objects. The traction system includes a traction wire rope for driving the traction trolley along the boom. Furthermore, the horizontal arm hoisting system includes a flexible short tie rod assembly and a flexible long tie rod assembly for connecting the boom to the top of the tower head.

[0010] Furthermore, the horizontal arm hoisting system also includes a trolley and hook removal pulley, a boom retraction pulley, and a tower head pulley. The trolley and hook removal pulley is installed at the end of the boom to assist in removing the traction trolley and hook during the disassembly process; the boom retraction pulley is installed near the end of the boom to assist in retracting the boom during disassembly; and the tower head pulley is installed at the top of the tower head to cooperate with the lifting wire rope during disassembly.

[0011] The present invention also provides an installation method for the above-mentioned double-horizontal-arm intelligent ground-mounted holding pole, which comprises the following steps: S11, installing anchoring feet on a fixed foundation and connecting an initial number of standard sections to form an initial standard section group; S12, assembling the jacking device assembly and sleeved on the outside of the initial standard section group, and fixing its bottom to the fixed foundation; S13, sequentially installing the jacking section, the slewing assembly, the slewing tower body and the tower head on the top of the initial standard section group; S14, symmetrically installing two sets of lifting arms on opposite sides of the tower head, and connecting them through the flexible short pull rod assembly and the flexible long pull rod assembly. Each boom is connected to the top of the tower head; S15, perform jacking and section adding operation: start the jacking cylinder to jack up the upper frame section together with the upper stop boot, and the upper stop boot cooperates with the lower step of a standard section to jack up the tower body; the lower stop boot is turned over to engage with the upper step of the lower standard section to support the tower body; retract the jacking cylinder to disengage the upper stop boot from the original matching position, introduce the new standard section through the introduction platform and the introduction trolley and connect and fix it under the jacked part of the tower body; repeat the above process until the tower body reaches the predetermined height, and finally firmly connect the lowest standard section with the anchor foot.

[0012] Furthermore, the present invention provides a method for disassembling the above-mentioned double-horizontal-arm intelligent grounding holding rod, which comprises the following steps: S21, for each set of horizontal-arm lifting system, disassembling its traction trolley (22) and hook (21): rewinding the lifting wire rope (11) so that it no longer passes through the weight limiter pulley (15), but bypasses the tower head pulley (28) and the trolley and hook disassembly pulley (27), using the lifting wire rope (11) to assist in partial disassembly and lowering the traction trolley (22) and hook (21); and removing the traction wire rope (29); S22, for each set of horizontal-arm lifting system, folding and disassembling its crane arm (9): rewinding Lifting the steel wire rope (11) so that it passes over the tower head pulley (28) and the boom retracting pulley (26) to form a multi-rate winding, and utilizing the lifting steel wire rope (11) to retract the boom (9) upward to the vicinity of the tower head (8) and fix it; S23, performing a tower lowering and section reduction operation, removing the standard sections (3) section by section from the bottom of the tower body until a predetermined number of standard sections remain; S24, disassembling the boom (9), the flexible short pull rod assembly (24), the flexible long pull rod assembly (25), the tower head (8), the rotating tower body (7), the rotating assembly (6), the lifting section (5), disassembling the lifting device assembly (1), the remaining standard sections (3) and the anchoring foot (2).

[0013] Specifically, in step S21, the hauling trolley and hook are disassembled by breaking the hook into two parts and securing them to the front and rear trolleys of the hauling trolley, respectively. The hook is then lowered and removed in batches using rewound hoisting wire ropes. In step S22, the boom is retracted upward using the hoisting wire ropes. A four-fold retraction is formed between the tower head pulley and the boom retraction pulley, and the boom is slowly raised until it contacts the tower head top block and then secured.

[0014] The technical effect of the present invention is that, through the two symmetrically arranged flat arm lifting systems, the balance of the overall structure of the boom is ensured, the two arms are allowed to work in coordination or independently, and the flexibility and efficiency of construction are significantly improved. The jacking device assembly realizes the precise coordination of the jacking cylinder and the upper and lower stop boots with the standard section steps, which realizes the jacking and lowering of the tower body section by section, smoothly and controllably, reducing the intensity of manual labor and the risk of high-altitude operations. The installation method allows the assembly of most key components to be completed on the ground or at a lower position, and then the jacking device assembly itself is used to raise the height section by section, reducing the amount of high-altitude operations and improving installation efficiency and safety. The disassembly method lowers the tower and reduces sections by reversing the operation of the jacking device assembly, designs a specific lifting wire rope rewinding path, and uses a specially set trolley and hook to disassemble the pulley, the boom retraction pulley and the tower head pulley, making the disassembly and lowering process of these components more simplified, safe and efficient.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, embodiments of the present invention are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the double-horizontal-arm intelligent grounding mast in the embodiment;

[0018] Figure 2 Schematic diagram of the threading and winding of the traction wire rope in the embodiment;

[0019] Figure 3 Schematic diagram of the threading and winding of the lifting wire rope in the embodiment;

[0020] Figure 4 This is a schematic diagram of the operation of the newly introduced standard section in the embodiment;

[0021] Figure 5 It is a structural diagram of a standard section in the embodiment;

[0022] Figure 6 This is a schematic diagram of the lifting process during the introduction of the standard section in the embodiment;

[0023] Figure 7 This is a state diagram of the double-horizontal-arm intelligent landing holding process in the embodiment when the rotating tower body is installed;

[0024] Figure 8 This is a state diagram of the tower head installed during the process of the double-horizontal-arm intelligent landing mast in the embodiment;

[0025] Figure 9 This is a diagram showing a state in which the boom is raised in the embodiment;

[0026] In the figure: 1. Jacking device assembly; 101. Lower stop shoe; 102. Jacking frame; 1021. Upper frame section; 1022. Jacking cylinder; 1023. Lower frame section; 103. Upper stop shoe; 104. Introduction platform; 105. Introduction trolley; 2. Anchor foot; 3. Standard section; 301. Upper step; 302. Lower step; 4. Ladder; 5. Jacking section; 6. Slewing assembly; 7. Slewing tower; 8. Tower head; 9. Lifting arm; 10. Lifting power unit; 11. Lifting wire rope; 12. Ground guide wheel; 13. Jacking section first Guide wheel; 14. Second guide wheel of jacking section; 15. Weight limiter pulley; 16. Tower head guide wheel; 17. Hook pulley block; 18. Trolley pulley block; 19. Weight limiter; 20. Fixed foundation; 21. Hook; 22. Traction trolley; 23. Wire rope straightener; 24. Flexible short pull rod assembly; 25. Flexible long pull rod assembly; 26. Boom stowage pulley; 27. Trolley and hook disassembly pulley; 28. Tower head pulley; 29. Traction wire rope; 30. Boom end pulley; 31. Rope supporting pulley; 32. Boom length adjustment mechanism; 33. Boom root pulley. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0028] like Figures 1 to 5 As shown, an embodiment of the present invention discloses a double-horizontal-arm intelligent grounding jib, comprising a lifting device assembly 1, a tower body and two sets of horizontal-arm lifting systems, which are symmetrically distributed on opposite sides of the tower body.

[0029] The dual-horizontal-arm intelligent ground-mounted mast of the embodiment of the present invention is installed on a fixed foundation 20, specifically as follows:

[0030] 1. The lifting device assembly 1 includes:

[0031] The jacking frame 102 includes a lower frame section 1023 and an upper frame section 1021 mounted on the top of the lower frame section 1023 via a jacking cylinder 1022, wherein the upper frame section 1021 is shorter than the lower frame section 1023, and the bottom end of the lower frame section 1023 is mounted on the fixed foundation 20;

[0032] The lower stop shoe 101 is mounted on the top of the lower frame section 1023;

[0033] Upper stop shoe 103, mounted on upper sleeve frame section 1021;

[0034] The introduction platform 104 is detachably and foldably installed at the bottom of the lower frame section 1023;

[0035] The introduction trolley 105 is installed on the introduction platform 104 and can move along the introduction platform 104.

[0036] The design of the introduction platform 104 and the introduction trolley 105 makes the introduction of the standard section more convenient and efficient, reduces the dependence on external large-scale lifting equipment, and improves the autonomy and flexibility of the installation operation.

[0037] 2. The tower body is located in the middle of the lifting frame 102 and includes:

[0038] An anchoring foot 2 anchored to a fixed foundation 20;

[0039] The standard section group includes several standard sections 3 that can be detachably connected in sequence from bottom to top, wherein the lower end of the lowest standard section 3 can be detachably mounted on the anchor foot 2. A ladder channel 4 is also provided in the standard section group. After the installation of the double-horizontal-arm intelligent landing mast is completed, the lowest standard section 3 is located at the bottom of the lower frame section 1023, and the uppermost standard section 3 is located above the upper frame section 1021;

[0040] The lifting section 5 is detachably mounted on the top of the uppermost standard section 3;

[0041] The slewing assembly 6 (not specifically labeled due to its common tower crane structure, generally includes a slewing lower support, a slewing upper support mounted on the slewing lower support via a slewing bearing, and a slewing mechanism for driving the slewing upper support to rotate) is detachably mounted on the top of the jacking section 5;

[0042] The rotating tower body 7 is detachably mounted on the top of the rotating assembly 6;

[0043] The tower head 8 is detachably mounted on the top of the rotating tower body 7 .

[0044] Each standard section 3 is provided with an upper step 301 and a lower step 302, which are used to cooperate with the above-mentioned locking boots 101, 103 that are turned inward during the operation of adding a new standard section 3 to the bottom end of the original standard section group.

[0045] The precise matching mechanism of the steps 301, 302 and the locking shoes 101, 103 ensures stable support and safe operation during the tower raising and lowering process.

[0046] 3. The horizontal arm lifting system includes the lifting system, traction system and lifting arm.

[0047] (1) The base of the boom 9 is rotatably mounted on the bottom end of the tower head 8. The first position of the boom 9 away from the base is connected to the top of the tower head 8 via a flexible short tie rod assembly 24, and the second position away from the base is connected to the top of the tower head 8 via a flexible long tie rod assembly 25.

[0048] (2) Lifting system includes:

[0049] A lifting power device 10 is installed on the ground, and its driving end is connected to one end of a lifting wire rope 11;

[0050] Ground guide wheels 12, mounted on a fixed foundation 20;

[0051] The first guide wheel 13 of the jacking section and the second guide wheel 14 of the jacking section are both installed on the jacking section 5;

[0052] The weight limiter 19 is installed at the lower position of the tower head 8, and the weight limiter pulley 15 is used to bypass the lifting wire rope 11 to limit the lifting weight;

[0053] The tower head guide wheel 16 is installed at the lower end of the tower head 8 and close to the arm root of the crane arm 9;

[0054] The traction trolley 22 is a double trolley structure including two connected trolleys, which are coupled to the boom 9. The trolley has a trolley pulley block 18 for passing over the lifting wire rope 11 to suspend the hook 21 in the air.

[0055] A hook 21 having a hook pulley block 17 for passing over the lifting wire rope 11 and suspending it in the air by the lifting wire rope 11;

[0056] The wire rope straightener 23 is installed at the end of the boom 9 and connected to the other end of the lifting wire rope 11;

[0057] In the above structure, one end of the lifting wire rope 11 is connected to the lifting power device 10, and then passes through the ground guide wheel 12, the first guide wheel 13 of the lifting section, the second guide wheel 14 of the lifting section, the weight limiter pulley 15 and the tower head guide wheel 16 in sequence, and then alternately passes through the pulley in the trolley pulley group 18 and the pulley in the hook pulley group 17, and the hook 21 is suspended in the air by the wire rope 11, and finally the other end of the lifting wire rope 11 is connected to the wire rope straightener 23.

[0058] In order to facilitate the disassembly of the traction trolley 22 and the hook 21, the lifting system also includes:

[0059] The trolley and hook removal pulley 27 is installed at the end of the boom 9;

[0060] The boom stowage pulley 26 is installed near the end of the boom 9 (for example, 2m behind the installation position of the trolley and hook removal pulley 27);

[0061] The tower head pulley 28 is installed on the top of the tower head 8.

[0062] These pulleys 26, 27, 28, which are specially provided for the disassembly operation, facilitate the re-threading of the lifting wire rope 11 and the recovery of components during the subsequent disassembly process, significantly simplifying the disassembly process and improving the safety and efficiency of the operation.

[0063] (3) The traction system is used to cooperate with the traction trolley 22 to stably and controllably move on the crane arm 9, including:

[0064] The arm end pulley 30 and the arm root pulley 33 are respectively installed at the end and the root of the lifting arm 9;

[0065] One or more rope support pulleys 31 are mounted on the boom 9 and arranged in sequence along the front-to-back direction;

[0066] The luffing mechanism 32 is mounted on the boom 9 and is located behind the rope pulley 31;

[0067] The first end of the traction wire rope 29 is connected to the front end of the traction trolley 22, and the rope body is passed around the arm end pulley 30, the rope support pulley 31, the luffing mechanism 32 and the arm root pulley 33 in sequence, and finally the second end is connected to the rear end of the traction trolley 22.

[0068] The installation method of the above-mentioned dual-level arm intelligent floor-standing mast (note that the specific connection method description, such as bolt connection and pin connection, is omitted during the installation process) includes:

[0069] (1) Install the anchoring foot 2 and the ground guide wheel 12 on the fixed foundation 20 on the ground.

[0070] (2) Install the initial standard section group on the fixed foundation 20, which includes five standard sections 3, and install the ladder channel 4 in the standard section group. Make sure that the standard section group is perpendicular to the fixed foundation 20.

[0071] (3) Assemble the jacking device assembly 1 on the ground, then hoist it onto the initial standard section group so that the standard section group is located at the center of the jacking device assembly 1, and fix the bottom end of the jacking sleeve to the fixed foundation 20.

[0072] (4) Lifting and fixing the jacking section 5 to the top of the initial standard section group.

[0073] (5) Install the rotary assembly 6 on the top of the lifting section 5.

[0074] (6) Install the rotating tower body 7 on the top of the rotating assembly 6. The state diagram at this time is shown in FIG. Figure 7shown.

[0075] (7) Assemble the tower head 8 on the ground, select the lifting point, lift the tower head 8 vertically, put it into the ear seat at the top of the rotating tower body 7 and fix it. The state at this time is shown in the figure. Figure 8 shown.

[0076] (8) Assemble the boom 9, the flexible short tie rod assembly 24 and the flexible long tie rod assembly 25, wherein the long and short tie rod assemblies 24 and 25 each include a steel wire rope and a three-hole pull plate assembly at both ends; place the boom 9 and the tie rod assembly 24 and 25 on a 0.6m high bracket, then install the traction trolley 22 on the boom 9 and fix it to the root of the boom 9, according to Figure 2 As shown, the traction wire rope 29 is passed through the tower head 8; then the whole is hoisted to the bottom of the tower head 8, the root of the boom 9 is connected to the tower head 8, and the lifting wire rope 11 is used to pull the pull rod assembly 24, 25 to the top of the tower head 8 through the tower head pulley 28 on the tower head 8. After the boom 9 is raised, the pull rod assembly 24, 25 is connected to the top of the tower head 8, and then the boom 9 is leveled and re-assembled according to Figure 3 As shown, the lifting wire rope 11 is threaded and wound, and during the threading and winding process, the lifting wire rope 11 is used to connect the hook 21 to the traction trolley 22 and suspend it in the air.

[0077] This method of completing the assembly of most components on the ground or at a lower location, and then using its own lifting system to assist in the installation of the superstructure (such as pull rods), effectively reduces the amount of high-altitude work and improves installation efficiency and work safety.

[0078] (9) Lift and add sections according to the required height of the double-arm intelligent landing boom;

[0079] Note that the average wind speed at the highest point of the mast must not exceed 8m / s before lifting and adding sections. When lifting and adding sections on a standalone mast (i.e., without attaching the mast to a side base using an attachment frame), the maximum number of standard sections is generally no more than 9.

[0080] The following combination Figure 4 、 Figure 5 and Figure 6 Explain the process of jacking and adding sections:

[0081] Place the standard section 3 to be introduced on the introduction trolley 105 of the introduction platform 104 of the jacking frame, Figure 4 As shown (note that this figure is intended to reflect the step process and the structure of the jacking device assembly 1, and other structural parts are not complete, for example, the five standard sections 3 are not shown, and other parts above are not shown).

[0082] Remove the connection between the anchor foot 2 and the currently bottom standard section 3.

[0083] Lift the current standard section group to leave enough space below to install the standard section 3 to be introduced. The lifting process is as follows: Figure 6 As shown, three standard sections 3 are shown. From top to bottom, the first and second standard sections 3 both show upper steps 301 and lower steps 302, and the third standard section 3 shows upper steps 301. This example illustrates the lifting process, including:

[0084] 1) The upper stop shoe 103 is flipped inward and connected to the lower step 302 of the first standard section 3 from bottom to top through the lifting cylinder 1022, and the lifted part (i.e. the current standard section group and other components thereon) is completely lifted; through the precise cooperation between the lifting cylinder 1022 and the upper stop shoe 103, a stable and controllable lifting of the tower body is achieved.

[0085] 2) Flip the lower stop shoe 101 inward and place the jacked part on the lower stop shoe 101 with the help of the upper step 301 of the third standard section 3; the supporting effect of the lower stop shoe 101 ensures the safety and stability of the main structure during the jacking process when the jacking cylinder 1022 retracts or adjusts.

[0086] 3) Flip the upper stop shoe 103 outward to disengage it from the lower step 302 of the first standard section 3, and lower it by retracting the lifting cylinder 1022.

[0087] 4) Flip the upper stop shoe 103 inward and place it under the lower step 302 of the second standard section 3.

[0088] Repeat the above steps to obtain enough space to introduce a new standard section 3 into the sleeve.

[0089] After enough space is left, the lifted part is supported on the lower stop shoe 101 by means of the steps 301 and 302, and the upper stop shoe 103 is in an outwardly turned state.

[0090] At this time, the standard section 3 to be introduced is pushed into the reserved space along the introduction platform 104 by the introduction trolley 105 until it is pushed into the lifting sleeve and aligned with the standard section 3 above.

[0091] The use of the introduction platform 104 and the introduction trolley 105 greatly simplifies the introduction process of the new standard section 3, reduces the difficulty and labor intensity of manual handling, and improves the efficiency of adding sections.

[0092] The lifting cylinder 1022 is retracted again to lower the lifted part, and the adjacent standard section 3 is fixedly connected to the newly introduced standard section 3.

[0093] The jacking oil cylinder 1022 is jacked up to a certain extent again, and the introduction trolley 105 is moved to the outside of the jacking sleeve.

[0094] When the number of newly introduced standard sections 3 reaches the required number, the lowest end of the nearest standard section group is fixedly connected to the anchor foot 2.

[0095] After the whole machine is installed according to the previous steps, when the average instantaneous wind speed at the top is not greater than 3m / s within 3s, check the verticality of the tower axis with an allowable error of 1 / 1000.

[0096] The disassembly method of the above-mentioned double-level arm intelligent floor-standing mast includes:

[0097] (1) Disassembling the traction trolley 22, the hook 21 and the wire rope straightener 23, specifically including:

[0098] 1) Decompose the hook 21 into two parts and fix them on the front and rear trolleys of the traction trolley 22 respectively.

[0099] 2) Rewind the hoisting wire rope 11, move the traction trolley 22 to the end of the boom 9, and guide the hoisting wire rope 11 and the second guide wheel 14 of the self-lifting section no longer around the weight limiter pulley 15, but continue to move vertically upward and around the tower head pulley 28, and then pull it to the trolley and hook removal pulley 27 and around the trolley and hook removal pulley 27. This specific rewinding of the wire rope 11 is the core step to achieve the safe and efficient removal of key components (such as the trolley and hook) in the future, avoiding the complicated operation of traditional disassembly.

[0100] 3) Remove the traction wire rope 29 and disassemble the front and rear trolleys of the traction trolley 22; connect the lifting wire rope 11 that has passed through the trolley and the hook removal pulley 27 to the front trolley, remove the wire rope straightener 23 from the boom 9 and connect it to the front trolley, then lower the lifting wire rope 11, and then lower and remove the wire rope straightener 23, the front trolley and a part of the hook 21 structure connected to the front trolley, and separate the lifting wire rope 11 from the front trolley; disassemble the parts in sections and use their own lifting system to lower the parts, which reduces the weight and operation difficulty of a single lowering, and significantly improves the safety and controllability of the disassembly operation.

[0101] 4) Move up the lifting wire rope 11 and connect it to the rear trolley, then lower the lifting wire rope 11, and then lower and remove the rear trolley and the remaining part of the hook 21 structure connected to the rear trolley.

[0102] (2) Pull up the boom 9.

[0103] In this embodiment, there are four tower head pulleys 28 and four boom retracting pulleys 26. The two tower head pulleys 28 and two boom retracting pulleys 26 on the right side are used for the horizontal arm lifting system on the right side, and the two tower head pulleys 28 and two boom retracting pulleys 26 on the left side are used for the horizontal arm lifting system on the left side.

[0104] Taking the right-side horizontal arm lifting system as an example, the rope threading method required for the lifting process of the boom 9 includes:

[0105] The lifting wire rope 11 and the part of the second guide wheel 14 of the self-lifting section no longer pass around the weight limiter pulley 15, but continue to move vertically upward and pass around one of the tower head pulleys 28 on the right side of the top of the tower head 8, then pull to one of the boom folding pulleys 26 on the right side, and pass around the boom folding pulley 26, then return and pass around another tower head pulley 28 on the right side of the top of the tower head 8, and then pull to another boom folding pulley 26 on the right side, and after four times of passing through, fix it to the wedge sleeve on the top of the tower head 8.

[0106] The use of a four-fold pulley block threading method to retract the boom 9 significantly reduces the required pulling force, making the boom retraction process more labor-saving, smoother and safer, and reducing the demand for large-scale auxiliary lifting equipment.

[0107] The same applies to the method of threading and winding the lifting wire rope 11 required for the lifting process of the boom 9 of the left flat arm lifting system.

[0108] Run the lifting power device 10 of the left and right horizontal arm hoisting system to pre-tighten the lifting wire ropes 11 on both sides; after ensuring that the lifting wire ropes 11 on both sides are pre-tightened, run the lifting power device 10 again to allow the two sides of the boom 9 to be synchronously and slowly raised around the hinge point at the root of the boom. When the middle of the boom 9 contacts the bumper on the top of the tower head 8, fix the boom 9 to the top of the tower head 8. Figure 9 shown.

[0109] The simultaneous pre-tightening and slow shaking-up operations on both sides ensure the balance and stability of the arm retraction process, avoiding structural risks that may be caused by uneven force on one side.

[0110] (3) Referring to the operation method of lifting and adding sections, reverse the operation and lower the tower, removing some standard sections 3 to minimize the height of the free end of the holding pole (generally, the tower is lowered until there are 5 standard sections 3 left, and the method is the reverse operation of introducing new standard sections 3). The method of lowering the tower section by section makes the disassembly process clear and controllable, which is conducive to ensuring the safety of the operation.

[0111] (4) Dismantle the boom 9, the flexible short tie rod assembly 24, the flexible long tie rod assembly 25, the tower head 8, the slewing tower body 7, the slewing assembly 6, the lifting section 5, the lifting device assembly 1 and the current standard section group, and then remove the ground guide wheel 12.

[0112] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A double-horizontal-arm intelligent ground-mounted mast, characterized in that: include: The tower body comprises, from bottom to top, an anchoring foot (2) anchored to a fixed foundation (20), a standard section group installed on the anchoring foot (2), a jacking section (5) installed on the top of the standard section group, a slewing assembly (6) installed on the top of the slewing section (5), a slewing tower body (7) installed on the top of the slewing assembly (6), and a tower head (8) installed on the top of the slewing tower body (7); A jacking device assembly (1) comprises a lower casing section (1023), an upper casing section (1021), a lower stop shoe (101) and an upper stop shoe (103); the upper casing section (1021) is movably mounted on the top of the lower casing section (1023) via a jacking oil cylinder (1022); the bottom of the lower casing section (1023) is mounted on a fixed foundation (20) and sleeved on the outside of a tower body to guide and temporarily support the tower body during the process of adding or removing sections; the lower stop shoe (101) and the upper stop shoe (103) are respectively mounted on the lower casing section (1023) and the upper casing section (1021); The standard section group comprises a plurality of standard sections (3) which are detachably connected in sequence from bottom to top; each standard section (3) is provided with an upper step (301) and a lower step (302) for the upper stop shoe (103) and the lower stop shoe (101) to cooperate in the lifting or lowering operation; And two sets of flat arm lifting systems are symmetrically installed on opposite sides of the tower body; each set of flat arm lifting systems includes a lifting arm (9), a lifting system and a traction system, the arm root of the lifting arm (9) is rotatably assembled on the bottom end of the tower head (8); the lifting system includes a hook (21) for lifting heavy objects and a traction trolley (22) for suspending the hook (21), and the traction system is used to drive the traction trolley (22) to move along the lifting arm (9); the traction trolley (22) includes two front and rear trolleys.

2. The double-horizontal-arm intelligent ground-mounted mast according to claim 1, characterized in that: The jacking device assembly (1) further comprises an introduction platform (104) and an introduction trolley (105); the introduction platform (104) is installed at a position close to the bottom of the lower casing section (1023); the introduction trolley (105) is installed on the introduction platform (104) and is used to carry the standard section (3) to be installed during the section addition process and introduce it into the jacking device assembly (1).

3. The double-horizontal-arm intelligent ground-mounted mast according to claim 2, characterized in that: The lifting system further comprises: Lifting power unit (10); A lifting wire rope (11) is connected to the lifting power device (10) at one end, passes through a ground guide wheel (12), a first guide wheel (13) and a second guide wheel (14) of the lifting section on the lifting section (5), a weight limiter pulley (15) of a weight limiter (19) and a tower head guide wheel (16) at the bottom of the tower head (8), and then passes through a trolley pulley block (18) of the traction trolley (22) and a hook pulley block (17) of the hook (21). The other end of the lifting wire rope is connected to a wire rope straightener (23) installed at the end of the boom (9).

4. The double-horizontal-arm intelligent ground-mounted mast according to claim 3, characterized in that: The traction system includes a traction wire rope (29), a first end of which is connected to the front end of the traction trolley (22), and the rope body is passed through the arm end pulley (30) installed at the end of the boom (9), the rope support pulley (31) installed on the boom (9), the luffing mechanism (32) and the arm root pulley (33) installed at the root of the boom (9), and the second end of the rope is connected to the rear end of the traction trolley (22).

5. The double-horizontal-arm intelligent ground-mounted mast according to claim 4, characterized in that: The horizontal arm lifting system also includes: A trolley and hook removal pulley (27) is mounted on the end of the boom (9); A boom folding pulley (26) is installed near the end of the boom (9); and a tower head pulley (28) mounted on the top of the tower head (8); the trolley and hook disassembly pulley (27), the boom retracting pulley (26) and the tower head pulley (28) are used to cooperate with the lifting wire rope (11) to perform operations during the disassembly process.

6. A method for installing the double-horizontal-arm intelligent floor-standing mast according to claim 5, characterized in that: include: S11, installing anchoring feet (2) on a fixed foundation (20) and connecting an initial number of standard sections (3) to the anchoring feet (2) to form an initial standard section group; S12, after assembling the jacking device assembly (1), the bottom of the lower sleeve frame section (1023) is fixed on the fixed foundation (20), and the jacking device assembly (1) is sleeved on the outside of the initial standard section group; S13, sequentially installing the jacking section (5), the rotary assembly (6), the rotary tower body (7) and the tower head (8) on the top of the initial standard section group; S14, symmetrically installing two sets of crane arms (9) on opposite sides of the tower head (8), and connecting each crane arm (9) to the top of the tower head (8) through a flexible short pull rod assembly (24) and a flexible long pull rod assembly (25), and passing a lifting wire rope (11) and a traction wire rope (29) through each set of crane arms (9); S15, performing the lifting and sectioning operation: starting the lifting oil cylinder (1022) to lift the upper frame section (1021) together with the upper stop boot (103) thereon, and the upper stop boot (103) cooperates with the lower step (302) of a certain standard section (3) to lift the tower body; thereafter, the lower stop boot (101) cooperates with the upper step (301) of another standard section (3) below to support the tower body; then the new standard section (3) is introduced into the lifted space through the introduction platform (104) and the introduction trolley (105) and connected and fixed to the bottom of the lifted part of the tower body; repeating this process until the tower body reaches a predetermined height, and finally the standard section (3) at the lower end of the tower body is firmly connected to the anchor foot (2).

7. The installation method according to claim 6, characterized in that: In step S15, after the upper stop shoe (103) cooperates with the lower step (302) of the standard section (3) to lift the tower body, the lower stop shoe (101) is turned over to engage with the upper step (301) of the lower standard section (3) to support the tower body; then the lifting cylinder (1022) is retracted to disengage the upper stop shoe (103) from the original engaged lower step (302) and descend to a position ready to engage with the lower step (302) of the next level standard section (3).

8. A method for disassembling the double-horizontal-arm intelligent ground-mounted mast according to claim 5, characterized in that: The following steps are involved: S21. For each horizontal arm hoisting system, dismantle its traction trolley (22) and hook (21): rewind the lifting wire rope (11) so that it no longer passes through the weight limiter pulley (15), but passes around the tower head pulley (28) and the trolley and hook disassembly pulley (27), and use the lifting wire rope (11) to assist in the partial disassembly and lowering of the traction trolley (22) and hook (21); and remove the traction wire rope (29); S22. For each horizontal arm hoisting system, fold up and dismantle its boom (9): rewind the lifting wire rope (11) so that it passes through the tower head pulley (28) and the boom folding pulley (26) to form a multi-rate winding, and use the lifting wire rope (11) to fold the boom (9) upward to the vicinity of the tower head (8) and secure it; S23, performing tower lowering and section reduction operations, removing standard sections (3) from the bottom of the tower body section by section until a predetermined number of standard sections remain; S24, dismantle the lifting arm (9), the flexible short pull rod assembly (24), the flexible long pull rod assembly (25), the tower head (8), the rotating tower body (7), the rotating assembly (6), the jacking section (5), dismantle the jacking device assembly (1), the remaining standard sections (3) and the anchoring foot (2).

9. The disassembly method according to claim 8, characterized in that: In step S21, when disassembling the traction trolley (22) and the hook (21), the hook (21) is decomposed into two parts and fixed respectively on the front and rear trolleys of the traction trolley (22), and then lowered and removed in batches using the re-threaded lifting wire rope (11).

10. The disassembly method according to claim 8, characterized in that: In step S22, when the boom (9) is retracted upward using the lifting wire rope (11), a four-fold winding is formed between the tower head pulley (28) and the boom retracting pulley (26), and the boom (9) is slowly raised until it contacts the top block of the tower head (8) and is fixed.

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