Methods for using extra-long arm of tower crane under special working conditions

Abstract

The present invention relates to a method for providing an extra-long arm for a tower crane under special working conditions. The method is suitable for attaching a tower crane to a main building when the construction height of an annex building is higher than that of the main building. The method comprises the following steps: raising the main building tower crane to a height higher than the construction height of the annex building so that the main building tower crane can rotate freely; providing an armrest, connecting one end of the armrest to the main building tower crane and the other end to a position corresponding to the annex building. The extra-long armrest method of the present invention utilizes the armrest to attach the main building tower crane to the annex building, and utilizes the annex building to support the main building tower crane, so that the main building tower crane can be raised above the annex building, thereby avoiding cross-constraints with the annex building, meeting the requirements for vertical transportation construction of the main building, and avoiding the occurrence of main building work stoppages.

Description

Technical Field

[0001] The invention relates to the technical field of building construction and relates to a method for super-lengthening the arm of a tower crane under special working conditions. Background Art

[0002] As the field of architectural design becomes increasingly diversified, architectural styles are also becoming increasingly colorful. Especially in group buildings, the main and annex buildings vary in height and are staggered, which not only highlights the height and majesty of the main building, but also reflects the uprightness and beauty of the annex buildings.

[0003] Due to the diverse nature of building shapes, the building's form and style must be carefully considered during the construction deployment process to ensure orderly construction and avoid mutual constraints. Based on past construction deployment experience, the main building will serve as the key route for the entire project. The allocation of various resources will be more inclined to ensure the organization of the main building's construction, especially in terms of vertical transportation. The tower crane on the main building will be gradually attached to the main building structure and raised as the construction progresses. The tower crane on the main building will also become the commanding height of the entire construction site, occupying an advantageous position for rotation and hoisting.

[0004] However, construction organization is subject to numerous uncertainties. The main building might not be constructed according to conventional arrangements for various reasons, resulting in the annex building's construction height exceeding that of the main building. In such special circumstances, the main building's tower crane, constrained by the main building's construction height, might be lower after attachment than the existing annex building's height. This would cause the main building's tower crane boom to intersect with the annex's main structure, preventing the main building's boom from rotating freely. This would further reduce the main building's vertical transportation efficiency or even halt construction, leading to the project's inability to organize further construction on the main building.

[0005] The main building tower crane cannot be effectively attached to the main building structure, resulting in low vertical transportation efficiency of the main building tower crane and inability to organize quickly. These problems need to be solved urgently. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects of the prior art, provide a method for super-long arm of tower crane under special working conditions, and solve the problem that the construction height of the existing annex building is higher than the main building, which restricts the vertical transportation of the tower crane in the main building.

[0007] The technical solution to achieve the above purpose is:

[0008] The present invention provides a method for super-long arm support of a tower crane under special working conditions, which is applicable to the attachment construction of a tower crane on a main building when the construction height of an annex building is higher than that of a main building. The method comprises the following steps:

[0009] Raise the main building tower crane so that its height is higher than the construction height of the annex building so that the main building tower crane can rotate freely; and

[0010] Provide a handrail, connect one end of the handrail to the tower crane of the main building, and connect the other end to the corresponding position of the annex building.

[0011] The super-long arm method of the present invention utilizes the arm to attach the main building tower crane to the annex building, and utilizes the annex building to support the main building tower crane, so that the main building tower crane can be raised to exceed the annex building, thereby avoiding the cross-constraint with the annex building, meeting the requirements of the main building's vertical transportation construction, and avoiding the occurrence of main building shutdown phenomenon.

[0012] A further improvement of the method for connecting an extra-long arm of a tower crane under special working conditions of the present invention is that, before connecting the arm, the method further comprises:

[0013] Adjust the verticality of the main building tower crane;

[0014] Measure the distance between the main building tower crane and the annex building, and provide a handrail of corresponding length based on the measured distance between the main building tower crane and the annex building.

[0015] A further improvement of the method for providing an extra-long arm for a tower crane under special working conditions of the present invention is that one end of the provided arm is a fixed end and the other end is an adjustable end;

[0016] When connecting the handrail, the fixed end of the handrail is fixedly connected to the main building tower crane, and the adjustable end of the handrail is temporarily hoisted on the annex building through a steel wire rope;

[0017] Adjust the verticality of the main building tower crane. After adjusting the verticality of the main building tower crane, release the temporary connection of the wire rope, adjust the adjustable end of the arm and connect the adjustable end to the annex building.

[0018] A further improvement of the method for super-long arm of tower crane under special working conditions of the present invention is that, when adjusting the verticality of the main building tower crane, a heavy object is provided, hoisted on the boom hook of the main building tower crane, and the heavy object is slid along the boom of the main building tower crane to a set position so that the boom of the main building tower crane is in a moment balance state, thereby completing the verticality adjustment of the main building tower crane.

[0019] A further improvement of the method for providing an extra-long arm for a tower crane under special working conditions of the present invention is that the arm provided includes a plurality of arm units, two adjacent arm units are butt-connected, the end of the arm unit at one end forms a fixed end, and the end of the arm unit at the other end forms an adjustable end.

[0020] A further improvement of the method for providing an extra-long arm of a tower crane under special working conditions of the present invention is that it further comprises:

[0021] An arm frame is provided on the standard section of the tower crane of the main building, and embedded parts are provided at corresponding positions of the annex building;

[0022] When connecting the armrest, one end of the armrest is fixedly connected to the armrest frame, and the other end of the armrest is connected to the corresponding embedded part.

[0023] A further improvement of the method for providing an extra-long handrail for a tower crane under special working conditions of the present invention is that, when providing the handrail, multiple handrails are provided at standard intervals along the main building tower crane.

[0024] A further improvement of the method for providing an extra-long arm of a tower crane under special working conditions of the present invention is that, when providing the arm, a plurality of armrests are provided at the same height. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of the main building tower crane attached to the annex building in the method of the tower crane with extra-long arm under special working conditions of the present invention.

[0026] Figure 2 This is a top view of the main building tower crane attached to the annex building in the method of the tower crane with super-long arm under special working conditions of the present invention.

[0027] Figure 3 The figure is a schematic structural diagram of the armrest used in the method for super-long armrest of tower crane under special working conditions of the present invention.

[0028] Figure 4 This is a structural schematic diagram of the adjustable end portion of the arm used in the method for making the tower crane have an extra-long arm under special working conditions of the present invention.

[0029] Figure 5 for Figure 4 Schematic diagram of the exploded structure of the shown structure.

[0030] Figure 6 This is a structural schematic diagram of measuring the distance between the main building tower crane and the annex building in the method of the present invention for measuring the distance between the main building tower crane and the annex building in the special working conditions.

[0031] Figure 7 It is a structural schematic diagram of installing the armrest in the method of the present invention for super-long armrest of tower crane under special working conditions.

[0032] Figure 8 This is a structural schematic diagram of the main building tower crane and the annex building intersecting under special working conditions in the method for the tower crane with extra-long arm under special working conditions of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] See Figure 1The present invention provides a method for having an extra-long arm of a tower crane under special working conditions, which is used to solve the problem that the construction height of the annex building is higher than the construction height of the main building, causing the annex building to restrict the free rotation of the main building tower crane, thereby reducing the vertical transportation efficiency of the main building or even stopping the work. The method of the present invention changes the conventional tower crane attachment idea, and uses a specially designed arm to attach the main building tower crane that was originally attached to the main building to the annex building, so that the height of the main building tower crane can be higher than the construction height of the annex building, thus avoiding the restrictive influence of the annex building on the main building tower crane, allowing the main building tower crane to rotate freely, and meeting the vertical transportation needs of the main building construction. The method for having an extra-long arm of a tower crane under special working conditions of the present invention is described below with reference to the accompanying drawings.

[0035] See Figure 1 , showing the structural diagram of the main building tower crane attached to the annex building of the method of the tower crane with super long arm under special working conditions of the present invention. Figure 1 , the method of the tower crane's extra-long arm under special working conditions of the present invention is described.

[0036] like Figure 1 The method of the tower crane with an extra-long arm under special working conditions of the present invention is applicable to the attachment construction of the main building tower crane when the construction height of the annex building is higher than the construction height of the main building. The method comprises the following steps:

[0037] Raise the main building tower crane 21 so that its height is higher than the construction height of the annex building 12 so that the main building tower crane 21 can rotate freely;

[0038] A handrail 22 is provided, one end of the handrail 22 is connected to the main building tower crane 21 , and the other end is connected to a corresponding position of the annex building 12 .

[0039] The arm 22 attaches the main building tower crane 21 to the annex building 12, and the annex building 12 is used to support the main building tower crane 21, so that the main building tower crane 21 can be raised to a construction height higher than the annex building 12, solving the problem that the main building tower crane is restricted by the height of the main building and the height of the tower crane after attachment cannot meet the construction organization requirements.

[0040] In a specific embodiment of the present invention, Figure 6 As shown, before connecting the arm, it also includes:

[0041] Adjust the verticality of the main building tower crane 21;

[0042] The distance D between the main building tower crane 21 and the annex building 12 is measured, and a handrail 22 of a corresponding length is provided according to the measured distance D between the main building tower crane 21 and the annex building 12 .

[0043] The main building tower crane is in the most unfavorable stress state when not in hoisting state, and the micro-deformation of the tower body of the main building tower crane is large. At this time, the error of the distance between the main building tower crane and the annex building measured is large. For this reason, the present invention first adjusts the verticality of the main building tower crane 21, and then provides a corresponding length of handrail according to the distance between the main building tower crane and the annex building after the verticality is adjusted, so as to solve the problem that the attachment length of the main building tower crane is greatly affected by the micro-deformation of the tower body of the main building tower crane.

[0044] In a specific embodiment of the present invention, Figure 3 As shown, one end of the provided arm 22 is a fixed end 221 and the other end is an adjustable end 222;

[0045] Combine Figure 7 As shown, when connecting the arm 22, the fixed end 221 of the arm 22 is fixedly connected to the main building tower crane 21, and the adjustable end 222 of the arm 22 is temporarily hoisted on the annex building 12 through the wire rope 23;

[0046] Adjust the verticality of the main building tower crane 21. After adjusting the verticality of the main building tower crane 21, release the temporary connection of the wire rope 23, adjust the adjustable end 222 of the arm 22 and connect the adjustable end 222 to the annex building 12.

[0047] After the adjustable end portion 222 is connected to the annex building 12 , the adjustable end portion 222 is fixedly connected to the body of the armrest 22 to lock the adjustment function of the adjustable end portion.

[0048] In a specific embodiment of the present invention, Figure 1 、 Figure 6 and Figure 7 As shown, when adjusting the verticality of the main building tower crane 21, a weight 30 is provided, and the weight 30 is hoisted on the hook 213 of the boom 212 of the main building tower crane 21, and the weight 30 is slid along the boom 212 of the main building tower crane 21 to a set position so that the boom 212 of the main building tower crane 21 is in a moment balance state, thereby completing the verticality adjustment of the main building tower crane 21.

[0049] The main building tower crane 21 includes a tower body formed by splicing together multiple standard sections 211, a boom 212 located at the top of the tower body, and a hook 213 slidably mounted on the boom 212. The hook 213 can be moved and adjusted along the boom 212, and the height of the hook 213 can also be adjusted, thereby enabling lifting operations using the hook 213. To adjust the verticality of the main building tower crane 21, a heavy object 30 is hoisted onto the hook 213. The horizontal position of the heavy object 30 is calculated based on the principle of moment balance of the hoisted object. The heavy object 30 is then moved to a corresponding position where the product of the weight of the heavy object 30 and its lever arm equals the product of the weight of the operating room at the other end of the boom and its lever arm. At this point, the boom 213 is in a state of force balance and can remain horizontal. The horizontal boom ensures stable and balanced forces on the tower body, ensuring the verticality of the tower body. With the tower body in a vertical state, the required armrest length is measured, providing a basis for on-site measurement and actual measurement for armrest production. Furthermore, after the verticality of the tower body was adjusted, a total station was used to re-measure the verticality of the school.

[0050] In a specific embodiment of the present invention, Figure 3 As shown, the provided armrest 22 includes multiple armrest units, and two adjacent armrest units are connected to each other. The end of the armrest unit at one end forms a fixed end 221, and the end of the armrest unit at the other end forms an adjustable end 222.

[0051] The armrest 22 is designed as a splicing connection structure, which can be spliced ​​according to actual needs. Two adjacent armrest units are butt-connected through flange plates and bolts. The splicing construction is simple and convenient, and can be spliced ​​on site according to the measured distance.

[0052] like Figure 4 and Figure 5As shown, the armrest 22 includes a support rod 223, a fixed ear seat fixedly connected to one end of the support rod 223, and an adjusting ear seat 224 slidably connected to the other end of the support rod 223. The fixed ear seat forms a fixed end 221, which is fastened to the main tower crane 21 through a pin shaft. The adjusting ear seat 224 forms an adjustable end 222. A slide groove 2231 is provided at the end of the support rod 223, and a slide plate 2241 adapted to the slide groove 2231 is provided at the adjusting ear seat 224. The slide plate 2241 can be slidably set in the slide groove 2231, thereby realizing the adjustment function. Preferably, the support rod 223 is a square tube with a hollow interior. The slide grooves 2231 are provided on the four sides of the square tube. The slide plate 2241 is a cross-shaped plate that is inserted into the square tube and extends from the corresponding slide grooves 2231. The slide plate 2241 can slide along the slide grooves 2231. When the slide plate 2241 slides toward the interior of the square tube, the adjustment ear seat 2241 moves toward the end near the square tube, at which time the overall length of the armrest 22 decreases. When the slide plate 2241 slides toward the exterior of the square tube, the overall length of the armrest 22 increases. According to this adjustment, the movement of the adjustment ear seat 2241 can achieve fine-tuning of the armrest length to meet actual installation requirements. When installing the armrest, the adjustment ear seat is adjusted to connect the adjustment ear seat 224 to the annex building by adjusting the position of the adjustment ear seat. After the connection is completed, the slide plate and the square tube are welded to fix the adjustment ear seat 224 so that the adjustment ear seat 224 is firmly and reliably fixed. The adjustment ear seat 224 is preferably fixed to the annex building 12 via a pin.

[0053] In a specific embodiment of the present invention, it also includes:

[0054] like Figure 7 As shown, an arm frame 214 is provided on the standard section of the main building tower crane 21, and an embedded part 121 is provided at a corresponding position of the annex building 12;

[0055] When connecting the armrest 22 , one end of the armrest 22 is fixedly connected to the armrest frame 214 , and the other end of the armrest 22 is connected to the corresponding embedded part 121 .

[0056] Preferably, connecting lugs are provided at the corners of the arm frame 214. The lugs provided at the fixed ends of the arm 22 are aligned with the connecting lugs on the arm frame, and then the arm and the arm frame are fastened together using a pin. The embedded part 121 is preferably a corbel, on which lugs are provided for connection to the adjustment lugs. After the adjustment lugs are aligned with the lugs, a fastening connection is achieved using a pin.

[0057] In a specific embodiment of the present invention, Figure 1 As shown, when the handrails 22 are provided, multiple handrails 22 are provided at intervals along the standard section 211 of the main building tower crane 21 .

[0058] Further, combined with Figure 2As shown, when the armrests 22 are provided, multiple armrests 22 are provided at the same height.

[0059] Preferably, three handrails 22 are provided at the same height, wherein the positions at which two handrails 22 are connected to the main building tower crane are close to each other, and the positions at which they are connected to the annex 12 are far away from each other, so that the two handrails 22 form a triangular support, which can improve the support strength. The end of the other handrail 22 is connected to one end of the handrail frame of the main building tower crane, and the connected end is far away from the ends connected to the other two handrails, and the position at which the other end of the other handrail 22 is connected to the annex is close to the connection position of its adjacent handrail.

[0060] like Figure 8 As shown, the special working condition of the present invention is that the construction height of the main building 11 is lower than the construction height of the annex building 12. A main building tower crane 21 is installed next to the main building 11 to provide vertical transportation services for the construction of the main building 11, and an annex building tower crane 13 is installed next to the annex building 12 to provide vertical transportation services for the construction of the annex building 12. The main building tower crane 21 is installed close to the main building 11, and the distance between it and the annex building 12 is greater than the distance between it and the main building 11. When the construction height of the annex building 12 is higher than that of the main building 11 due to some special reasons, the annex building 12 will restrict the rotation of the main building tower crane 21, making it impossible to use the main building tower crane 21 normally. To solve this problem, the method of the present invention is to attach the main building tower crane to the annex building through a handrail, and gradually attach and lift the main building tower crane as the main structure height of the annex building increases, ensuring that the main building tower crane is always higher than the height of the annex building and the height of the annex building tower crane through the attachment of the annex building, ensuring that the main building tower crane is not affected by other structures, and ensuring that the main building construction and vertical transportation are not affected by the surrounding structures. To facilitate the attachment of the main building tower crane to the annex building, the present invention specially designs an extra-long handrail. The extra-long handrail is a prefabricated structure that can be assembled on site according to actual conditions, ensuring the safety of the tower crane attachment.

[0061] The tower crane attachment concept of the present invention breaks the conventional limitations and realizes the attachment of the main building tower crane to the annex building structure through special customization of the arm, providing a broader concept for the construction deployment of multiple-unit projects and the arrangement of tower cranes.

[0062] The arm adopts an adjustable end design, which is simple to process and produce, and the precision requirements can be greatly reduced. It is easier to implement than the conventional tower crane adjustable screw arm design.

[0063] During the actual measurement of the handrail, the moment balance method is used to adjust the verticality of the tower body, and the fixed length of the handrail is determined after re-measurement with a total station.

[0064] The present invention has been described in detail above with reference to the embodiments of the accompanying drawings. A person skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A method for using an extra-long arm of a tower crane under special working conditions, suitable for attaching a tower crane to a main building when the construction height of an annex building is higher than that of the main building, characterized in that: The method comprises the following steps: Raise the main building tower crane so that its height is higher than the construction height of the annex building so that the main building tower crane can rotate freely; also make the main building tower crane higher than the annex building tower crane; as well as Provide a handrail, connect one end of the handrail to the tower crane of the main building, and connect the other end to the corresponding position of the annex building; Before attaching the armrests also include: Adjust the verticality of the main building tower crane; Measure the distance between the main building tower crane and the annex building, and provide a corresponding length of handrail based on the measured distance between the main building tower crane and the annex building; The arm provided has a fixed end at one end and an adjustable end at the other end; When connecting the handrail, the fixed end of the handrail is fixedly connected to the main building tower crane, and the adjustable end of the handrail is temporarily hoisted on the annex building through a steel wire rope; Adjusting the verticality of the main building tower crane, after the verticality of the main building tower crane is adjusted, releasing the temporary connection of the wire rope, adjusting the adjustable end of the handrail and connecting the adjustable end to the annex building; When adjusting the verticality of the main building tower crane, a heavy object is provided and hoisted on the boom hook of the main building tower crane, and the heavy object is slid along the boom of the main building tower crane to a set position so that the boom of the main building tower crane is in a moment balance state, thereby completing the verticality adjustment of the main building tower crane; the main building tower crane includes a tower body formed by splicing and connecting a plurality of standard sections, a boom provided at the top of the tower body, and a hook slidably provided on the boom, the hook can be moved and adjusted along the boom, and the height of the hook can also be adjusted, the heavy object is hoisted by the hook, and the horizontal position of the heavy object is calculated according to the moment balance principle of the hoisted object, and then the heavy object is moved to the corresponding position, the product of the weight of the heavy object and its lever arm is equal to the product of the weight of the operating room at the other end of the boom and its lever arm, at this time the boom is in a force balance state, and the boom can be kept horizontal; The provided armrest includes a plurality of armrest units, wherein two adjacent armrest units are butt-connected, the end of the armrest unit at one end forms a fixed end, and the end of the armrest unit at the other end forms an adjustable end; The armrest includes a support rod, a fixed ear seat fixedly connected to one end of the support rod and an adjusting ear seat slidably connected to the other end of the support rod, the fixed ear seat forming a fixed end, and the fixed ear seat is fastened to the main building tower crane through a pin shaft; the adjusting ear seat forms an adjustable end, a slide groove is provided at the end of the support rod, and a slide plate adapted to the slide groove is provided on the adjusting ear seat, and the slide plate can be slidably arranged in the slide groove to realize the adjustment function; the support rod is a square tube, the slide groove is provided on the four sides of the square tube, and the slide plate is a cross-shaped plate; after connecting the adjusting ear seat and the annex, the slide plate is welded and fixed to the square tube.

2. The method for super-long arm support of tower crane under special working conditions according to claim 1, characterized in that: Also includes: An arm frame is provided on the standard section of the tower crane of the main building, and embedded parts are provided at corresponding positions of the annex building; When connecting the armrest, one end of the armrest is fixedly connected to the armrest frame, and the other end of the armrest is connected to the corresponding embedded part.

3. The method for super-long arm support of tower crane under special working conditions according to claim 1, characterized in that: When setting up handrails, multiple handrails are set up at standard section intervals along the main building tower crane.

4. The method for super-long arm support of tower crane under special working conditions according to claim 1, characterized in that: When setting up handrails, multiple handrails should be set up at the same height.

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