Introduction type construction method on tower crane

Abstract

The invention discloses a tower crane introduction type construction method which comprises the following steps: mounting an introduction trolley on an introduction beam of a tower crane, and sliding the introduction trolley to one end, far away from a tower body of the tower crane, of the introduction beam; a connector and a double-end hook are provided, the upper end of the connector is hung on a lifting hook of the tower crane, and then one hook of the double-end hook is detachably hung on the first supporting rod; a standard knot is hung on the self-balancing piece; the tower crane lifts and translates the lifting hook to enable the other hook of the double-end hook to rise to the position above a second supporting rod of the introduction trolley, and the other hook is fixedly arranged on the second supporting rod; the lifting hook descends to separate the first supporting rod from a hook, so that a standard knot is hung on the second supporting rod through a double-end hook; and pushing the introduction trolley to enable a standard knot to be arranged at the mounting position. The problem that an upper introduction mode of an existing tower crane is low in introduction working efficiency is solved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a method for construction using a tower crane. Background Technology

[0002] Tower cranes (hereinafter referred to as tower crane 1) are indispensable equipment in high-rise building construction. As the building rises, tower crane 1 needs to undergo jacking and section addition operations to meet vertical lifting requirements. During the jacking and section addition process, the hydraulic system on the tower crane 1's climbing frame is used to lift the upper structure of tower crane 1, and the added standard section 14 is installed at the top of the tower body to increase the tower height. After the building is completed, the operation is reversed, and the standard sections 14 are dismantled section by section to reduce the tower height until the entire machine is dismantled.

[0003] During the installation or dismantling of standard section 14, the tower crane 1's introduction system is required to assist in the entry or exit of standard section 14 from the climbing frame of tower crane 1. One type of current tower crane 1's introduction system is the top introduction type. The top introduction type is mainly suitable for introducing standard section 14 using pin connections. An I-shaped introduction beam 13 is installed above the introduction area of ​​standard section 14 (due to the structural strength limitations of the climbing frame, the introduction beam 13 is connected to the lower slewing support). The introduction trolley 11 suspending standard section 14 can move back and forth on the introduction beam 13 to add or lower sections of standard section 14. When tower crane 1 lifts the introduction trolley 11 suspending standard section 14 from the ground to the introduction beam 13, the rollers on the introduction trolley 11 are manually aligned with the rails on the introduction beam 13 for alignment and connection. The introduction trolley 11 is then installed onto the introduction beam 13, completing the introduction of standard section 14. Figures 1 to 3 As shown. When lifting the next standard section 14, the tower crane 1 needs to manually lift the guide trolley 11 off the ground and then connect it to the standard section 14; the operation is reversed when lowering the section.

[0004] The top-mounted approach to crane jacking is structurally complex. Each time, the trolley 11 needs to be hoisted to the ground and connected to the standard section 14, then hoisted to the jacking beam 13 for disassembly. Furthermore, aligning the rollers on the trolley 11 with the track on the jacking beam 13 is difficult, resulting in low efficiency. Additionally, during the jacking operation of tower crane 1, a heavy load needs to be hoisted for leveling. After each jacking operation, the leveling load must be lowered before the trolley 11 can be hoisted again. The hoisting mechanism of tower crane 1 requires repeated vertical lifting and lowering. The higher the tower crane 1, the longer the operation takes. To save time, operators are prone to violating operating procedures, potentially leading to safety accidents.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, a tower crane top-mounted construction method is provided to solve the problem of low efficiency in existing tower crane top-mounted construction methods.

[0007] To achieve the above objectives, a method for introducing construction methods using a tower crane is provided, comprising: The trolley is installed on the guide beam of the tower crane, and the trolley is slid to the end of the guide beam away from the tower crane. A connector and a double-headed hook are provided. The lower end of the connector forms a first support rod. The upper part of the double-headed hook has two hooks facing away from each other on opposite sides. The hook openings of the hooks face each other. The lower part of the double-headed hook is hinged with a self-balancing component. The upper end of the connector is hung on the hook of the tower crane, and one hook of the double-headed hook is detachably hung on the first support rod. A standard section is hung on the self-balancing component; The tower crane raises and moves the hook so that the other hook of the double-headed hook rises above the second support rod of the guide trolley, and fixes the other hook to the second support rod; The hook is lowered to separate the first support rod from the hook, so that the standard section is hung on the second support rod by the double-headed hook; The trolley is pushed so that the standard section is positioned in the installation location.

[0008] Furthermore, the connector includes: Two booms are arranged opposite each other, and the first support rod is connected between the lower ends of the two booms; A hanging plate is connected between the upper ends of the two hanging rods. The hanging plate has a hanging hole, and the hook is hooked into the hanging hole.

[0009] Furthermore, each standard section is attached to two double-headed hook self-balancing components via hanging cables on its opposite sides.

[0010] Furthermore, the double-headed hook includes two side plates, the self-balancing component is rotatably mounted between the lower parts of the two side plates, and the hooks are respectively formed on opposite sides of the upper part of the side plates.

[0011] Furthermore, a limiting plate is formed on the first support rod, the limiting plate is arranged in a circle along the circumference of the first support rod, and the limiting plate is disposed between the hooks of the two wall panels.

[0012] The beneficial effects of this invention are as follows: When using a double-headed hook for standard section conversion and hoisting in the tower crane-mounted construction method of this invention, the force deflection of the double-headed hook can be caused. Through the design of the self-balancing component, this force deflection problem can be transferred to the hinge angle between the double-headed hook and the self-balancing component, thereby ensuring that the force on the suspension cable remains unchanged, ensuring uniform force on the suspension cable, and that the standard section always remains in a balanced state. The trolley remains constantly running on the guide beam, significantly reducing the safety risks of manual high-altitude operations.

[0013] The tower crane top-mounted construction method of the present invention replaces the conventional alignment connection between the rollers and the guide beam of the guide trolley with the second support rod of the double-headed hook, reducing the difficulty of docking. The standard section and the double-headed hook are connected by hanging cables. During the introduction process, only the standard section needs to be hung and disassembled, which reduces the workload, improves the work efficiency, is simple to operate and can be reused.

[0014] The tower crane top-mounted construction method of the present invention keeps the trolley running on the top beam, eliminating the need for repeated installation and disassembly; and through the cyclical use of multiple double-headed hooks, it reduces the repetitive lifting and lowering operations of the tower crane hoisting mechanism, saving operation time and enabling the tower crane to be put into use in a timely manner for construction projects; moreover, it avoids possible violations of operating procedures by workers, resulting in significant social and economic benefits. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the imported type of tower crane standard section.

[0016] Figure 2 This is a structural diagram of the trolley used for introducing tower cranes.

[0017] Figure 3 This is a structural diagram of a standard section of a tower crane.

[0018] Figure 4 This is a schematic diagram of the connector structure according to an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of the double-headed hook according to an embodiment of the present invention.

[0020] Figures 6 to 8 This is a schematic diagram illustrating the steps of the tower crane-based construction method according to an embodiment of the present invention.

[0021] Figure label: Tower crane 1, trolley 11, second support rod 12, guide beam 13, standard section 14, hook 15; Connector 2, hanger 21, hanger plate 22, first support rod 23; 3. Double-headed hook, 31. Wall panel, 32. Hook, 33. Self-balancing component. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Reference Figures 4 to 8 As shown, the present invention provides a method for construction using a tower crane, comprising the following steps: S1. Install the trolley 11 onto the guide beam 13 of the tower crane 1, and slide the trolley 11 to the end of the tower body of the guide beam 13 away from the tower crane 1.

[0025] In this embodiment, refer to Figures 1 to 3 The trolley 11 is always installed on the guide beam 13 of the tower crane 1, so that the trolley 11 can slide along the length of the guide beam 13.

[0026] A second support rod 1212 is formed at the bottom of the trolley 11.

[0027] S2. A connector 2 and a double-headed hook 3 are provided. A first support rod 23 is formed at the lower end of the connector 2. Two hooks 32 are formed on opposite sides of the upper part of the double-headed hook 3, with the hook openings of the hooks 32 facing each other. A self-balancing component 33 is hinged to the lower part of the double-headed hook 3. The upper end of the connector 2 is hung on the hook 15 of the tower crane 1, and one hook 32 of the double-headed hook 3 is detachably hung on the first support rod 23.

[0028] Combination Figure 4 As shown, connector 2 includes a hanger rod 21 and a hanger plate 22.

[0029] In this embodiment, the connector 2 has two hanger rods 21. The two hanger rods 21 are arranged opposite to each other. A first support rod 23 is connected between the lower ends of the two hanger rods 21.

[0030] The suspension plate 22 is connected between the upper ends of the two suspension rods 21. The suspension plate 22 has a lifting hole. The lifting hook 15 is hooked into the lifting hole.

[0031] Combination Figure 6As shown, each standard section 14 is hung on the self-balancing components 33 of two double-headed hooks 3 by hanging ropes on its opposite sides.

[0032] Continue to combine Figure 4 and Figure 6 As shown, a limiting plate is formed on the first support rod 23. The limiting plate is arranged in a circle along the circumference of the support rod. The limiting plate is located between the hooks 32 of the two wall panels 31.

[0033] Combination Figure 5 As shown, the double-headed hook 3 includes two side panels 31. A self-balancing component 33 is rotatably mounted between the lower parts of the two side panels 31. Hooks 32 are formed on opposite sides of the upper part of the side panels 31.

[0034] S3, such as Figure 6 As shown, a standard section 14 is hung on the self-balancing component 33.

[0035] S4, such as Figure 7 As shown, the tower crane 1 raises and moves the hook 15 so that the other hook 32 of the double-headed hook 3 rises above the second support rod 12, and fixes the other hook 32 to the second support rod 12.

[0036] S5, such as Figure 8 As shown, the hook 15 is lowered to separate the first support rod 23 from a hook 32, so that a standard section 14 is hung on the second support rod 12 via a double-headed hook 3.

[0037] S6. Promoting the introduction of the trolley 11 to set a standard section 14 in the installation position.

[0038] In the tower crane-assisted hoisting method of this invention, when standard sections are transferred and hoisted using double-headed hooks, the force on the double-headed hooks may deflect. Through the design of the self-balancing component, this force deflection problem can be transferred to the hinge angle between the double-headed hooks and the self-balancing component, thereby ensuring that the force on the suspending cables remains unchanged, ensuring uniform force on the suspending cables, and maintaining the standard section in a balanced state at all times. The trolley remains constantly running on the guide beam, significantly reducing the safety risks of manual high-altitude operations.

[0039] The tower crane top-mounted construction method of the present invention replaces the conventional alignment connection between the rollers and the guide beam of the guide trolley with the second support rod of the double-headed hook, reducing the difficulty of docking. The standard section and the double-headed hook are connected by hanging cables. During the introduction process, only the standard section needs to be hung and disassembled, which reduces the workload, improves the work efficiency, is simple to operate and can be reused.

[0040] The tower crane top-mounted construction method of the present invention keeps the trolley running on the top beam, eliminating the need for repeated installation and disassembly; and through the cyclical use of multiple double-headed hooks, it reduces the repetitive lifting and lowering operations of the tower crane hoisting mechanism, saving operation time and enabling the tower crane to be put into use in a timely manner for construction projects; moreover, it avoids possible violations of operating procedures by workers, resulting in significant social and economic benefits.

[0041] The tower crane top-loading construction method of this invention employs a top-loading method for loading standard sections. A loading trolley with rollers is directly used on the loading beam, and the trolley is designed with a second support rod. The double-headed hooks are connected to the standard section by a cable, and the first support rod of the connector is used to lift the double-headed hooks.

[0042] When the standard section is hoisted to the guide beam, the connection of the double-headed hook is switched, and the double-headed hook is connected to the second support rod of the guide trolley. Then, the connection between the double-headed hook and the connector is disengaged, completing the docking of the standard section. This docking method, achieved through the connection switch of the double-headed hook, is less difficult and more convenient than the alignment connection between the rollers on the guide trolley and the guide beam. Furthermore, during the connection switch between the hook and the guide trolley, the tower crane hook and the guide trolley do not overlap, eliminating any movement interference issues and eliminating concerns about damage to the guide trolley and guide beam caused by the tower crane hook during the suspension of the standard section. Meanwhile, because the double-headed hook will cause force deflection when it is switched, the self-balancing component design can transfer the force deflection problem to the hinge angle between the double-headed hook and the self-balancing component, thereby ensuring that the force on the sling does not change, ensuring that the sling is evenly stressed, and that the standard section always remains in a balanced state. Then, the standard section can be manually introduced into the installation area by the trolley, and then the double-headed hook and the standard section can be separated. There is no need to install and disassemble the trolley. Compared with the traditional top-introduction method, it has the advantages of high introduction efficiency and short operation time.

[0043] In this embodiment, BIM technology is used to accurately model and virtually assemble each component of the double-hook tower crane lifting system, continuously adjust and optimize it, determine the final design scheme, and directly export the parts list and detailed processing drawings, so as to make full preparations for the processing and manufacturing of the lifting system.

[0044] In this embodiment, the connector has a lifting hole at its upper end for connection with the hook, and a first support rod at its lower end for connection with the double-headed hook. A limiting plate is provided on the first support rod to restrict the movement of the double-headed hook on the first support rod. The spacing between the limiting plates is consistent with the spacing between the upper limiting plates on the second support rod of the guide trolley. When installing the connector on the tower crane hook, it should be ensured that the connector is installed stably.

[0045] The two double-headed hooks are set at the same height and parallel to each other. They are respectively engaged in the upper limit plate of the connector to ensure a secure connection before raising the hooks. The hooks on both sides of the double-headed hooks ensure that the double-headed hooks will not disengage from the first or second support rod when the hook or connector swings at a large angle.

[0046] Move the hooks above the standard section and connect the two double-headed hooks to the standard section using four equal-length slings. The connection positions should be consistent to ensure the standard section is level and its center of gravity is stable. When connecting the double-headed hooks to the standard section, pay attention to the orientation of the standard section, ensuring that the lifting lugs on the main chord of the standard section face the tower's counterweight arm.

[0047] The guide beam consists of two parallel I-beam-shaped tracks. These tracks provide a path for the rollers on the guide trolley to roll. Two trolley rollers are located at each end of the second support rod of the guide trolley, with each roller positioned on either side of the I-beam track. A limit plate is installed on the second support rod to engage the other hook of the double-headed hook.

[0048] When the standard section is hoisted to the top of the guide beam, the guide trolley is manually moved to the bottom of the double hook, the double hook is aligned with the upper limit plate of the guide trolley, and the hook is slowly lowered so that the double hook is fully engaged with the trolley crossbar, and the connection is completed.

[0049] After the double-hook connection is completed, continue lowering the hooks. Under gravity, the double-hooks will experience force deflection. Through the design of the self-balancing component, this force deflection is transferred to the hinge angle between the double-hooks and the self-balancing component, thus ensuring that the force on the sling remains unchanged, guaranteeing uniform force distribution, and maintaining the standard section's balance. Once the double-hook deflection is complete, the connector is separated from the double-hooks.

[0050] The tower crane hook and connector are lowered to the ground, two more double-headed hooks are attached, and the crane is moved above the next standard section. The two more double-headed hooks are connected to the standard section using four equal-length slings. Then the standard section is lifted, and the luffing trolley is moved to the front of the boom for tower crane jacking and balancing.

[0051] Next, the hydraulic cylinder extends, suspending the climbing claws at the corresponding lifting lug positions. The pin between the uppermost standard section and the lower slewing support is separated, and the upper structure of the tower crane is lifted using the lifting beam and climbing claws. The lifted upper structure of the tower crane is secured to the lifting lugs on the tower body using the stop shoes on the support frame. The piston rod is retracted, raising the climbing claws and lifting beam, and the climbing claws are suspended at the next pair of lug positions. To obtain the space required for the standard section to be introduced into the support frame, the operation procedure is repeated three times.

[0052] After the lifting stroke is completed, the standard section suspended on the trolley is manually pushed into the tower body, the hydraulic cylinder is retracted, and the upper slewing support is accurately aligned with the newly pushed standard section. The standard section is then connected to the tower body and the slewing support with a pin.

[0053] Disassemble the slings on the standard section, place the double-headed hook 1 on the operating platform, and push out the guide trolley. Move the luffing trolley to the base of the boom, connect the double-headed hook suspending the next standard section to the guide trolley; then attach the slings and double-headed hooks on the operating platform to the lifting hook, lower it to the ground, and lift the subsequent standard sections until the tower crane height meets the vertical transportation requirements, thus completing the tower crane lifting operation. For tower crane dismantling operations, the above steps are reversed.

[0054] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A tower crane top entry construction method, characterized in that, The method comprises the following steps: installing a leading trolley on a leading beam of the tower crane and sliding the leading trolley to an end of the leading beam away from a tower body of the tower crane; providing a connector and a double hook, the lower end of the connector being formed with a first supporting rod, the opposite sides of the upper part of the double hook being formed with two hooks arranged in opposite directions, the hook openings of the hooks being arranged in the same direction, and the lower part of the double hook being hinged with a self-balancing piece, the upper end of the connector being hung on a hook of the tower crane, and one hook of the double hook being detachably hung on the first supporting rod; hanging a standard section on the self-balancing piece; the tower crane lifting and translating the hook to make the other hook of the double hook rise above a second supporting rod of the leading trolley and be fixed on the second supporting rod; lowering the hook to separate the first supporting rod from the one hook, so that the one standard section is hung on the second supporting rod through the double hook; pushing the leading trolley to arrange the one standard section on an installation position.

2. The top-up construction method according to claim 1, characterized in that, The connector comprises: two lifting rods arranged in opposite directions, the first supporting rod being connected between the lower ends of the two lifting rods; a lifting plate connected between the upper ends of the two lifting rods, the lifting plate being provided with a lifting hole, and the hook being hooked on the lifting hole.

3. The top-up construction method according to claim 2, characterized in that, The opposite sides of each standard section are hung on the self-balancing pieces of two double hooks through hanging ropes.

4. The top-up construction method according to claim 3, characterized in that, The double hook comprises two wall plates, the self-balancing piece being rotatably installed between the lower parts of the two wall plates, and the opposite sides of the upper parts of the wall plates being respectively formed with the hooks.

5. The top-up construction method according to claim 4, characterized in that, The first supporting rod is formed with a limiting plate, the limiting plate being arranged in a circle along the circumferential direction of the first supporting rod, and the limiting plate being arranged between the hooks of the two wall plates.

Images