Tower crane supporting structure and construction method thereof

Abstract

The invention relates to the technical field of tower crane construction, and particularly discloses a tower crane supporting structure and a construction method thereof.The tower crane supporting structure is arranged between a structural steel column and a tower body of a tower crane and comprises a lengthening rod, a transverse rod and a locking assembly, the lengthening rod is fixedly connected to the top end of the structural steel column in the vertical direction, and the transverse rod is arranged between the tower body and the lengthening rod; one end of the cross rod is detachably and fixedly connected with the tower body, the other end of the cross rod is detachably and fixedly connected with the lengthening rod, the cross rod is a telescopic rod, and the locking assembly is arranged on the cross rod and used for locking the cross rod with the adjusted length to the current length. According to the supporting device, the tower crane in dome building structure construction can be conveniently supported, so that the stability and safety of the tower crane are improved; the bottom of the tower crane is arranged in the basement, so that the tower crane can be suitable for occasions without proper installation conditions on the ground, and the applicability is higher.

Description

Technical Field

[0001] The present application relates to the technical field of tower crane construction, and in particular to a tower crane support structure and a construction method thereof. Background Art

[0002] A tower crane is a rotating crane with a boom installed on the top of a tall tower. It has a large working space and is mainly used for vertical and horizontal transportation of materials and installation of building components in house construction. A tower crane consists of three parts: metal structure, working mechanism and electrical system. The metal structure includes the tower, boom and base; the working mechanism includes four parts: lifting, luffing, rotation and travel; the electrical system includes motors, controllers, distribution cabinets, connecting lines, signals and lighting devices, etc.

[0003] The tower body of a tower crane is assembled from multiple standard sections. Since the tower crane is often very high, an attachment is usually set between the tower crane and the building structure to support the tower body to improve the stability and safety of the tower crane. During the construction of some dome building structures, since the top of the building structure is a dome, the distance between the dome and the tower body is far, which makes it inconvenient to support the top of the tower body. Therefore, a tower crane support structure suitable for dome building structures is needed. Summary of the invention

[0004] In order to facilitate the support of a tower crane during the construction of a dome building structure, the present application provides a tower crane support structure and a construction method thereof.

[0005] In a first aspect, the present application provides a tower crane support structure, which adopts the following technical solution: A tower crane support structure is arranged between a structural steel column and a tower crane, the tower crane comprises a tower body, a climbing frame, a boom and a hook, the tower body comprises a plurality of standard sections, including an extension rod, a cross bar and a locking assembly, the extension rod is fixedly connected to the top of the structural steel column in a vertical direction, the cross bar is arranged between the tower body and the extension rod, one end of the cross bar is detachably fixedly connected to the tower body, and the other end of the cross bar is detachably fixedly connected to the extension rod, the cross bar is a telescopic rod, and the locking assembly is arranged on the cross bar, for locking the cross bar after adjusting its length at the current length.

[0006] By adopting the above technical solution, the extension rod is fixedly connected to the structural steel column, and then the cross bar is fixedly connected between the tower body and the extension rod, so that the top of the tower body can be supported, so that a good supporting effect can still be maintained during the construction of the dome building structure, which helps to improve the stability and safety of the tower crane.

[0007] Optionally, the cross bar includes a coaxially arranged fixed rod and a movable rod, the fixed rod is detachably fixedly connected to the extension rod, one end of the movable rod is slidably arranged in the fixed rod, and the locking assembly is arranged between the fixed rod and the movable rod.

[0008] By adopting the above technical solution, the length of the cross bar can be adjusted as needed, which can avoid interference with the sliding process of the top standard section during the subsequent dismantling process.

[0009] Optionally, the locking assembly includes a locking bolt, a tooth block and a rack, the locking bolt is arranged radially along the fixing rod, the locking bolt is threadedly connected to the fixing rod, a receiving groove is provided on the inner wall of the fixing rod, the tooth block is slidably arranged in the receiving groove, the tooth block is rotatably connected to the end of the locking bolt, the rack is fixedly connected to the movable rod along the length direction of the movable rod, the rack is located on a side of the movable rod close to the tooth block, and the rack is used to engage with the tooth block.

[0010] By adopting the above technical solution, the locking bolt is rotated to make the tooth block slide, and the tooth block is pressed against the rack to limit the sliding of the rack, thereby limiting the sliding of the movable rod, fixing the movable rod on the fixed rod, completing the locking of the movable rod, and locking the length of the cross bar, thereby ensuring the cross bar's tensioning and supporting effect on the tower body.

[0011] Optionally, a plurality of cross bars are provided and are respectively connected to a plurality of nodes of the tower body, and each of the cross bars is located at the same height.

[0012] The adoption of the above technical solution helps to enhance the tensioning and supporting effect on the tower body.

[0013] Optionally, the cross bars are provided in multiple groups and are arranged at intervals along the length direction of the extension rod.

[0014] By adopting the above technical solution, the tensioning and supporting effect on the tower body can be further enhanced.

[0015] Optionally, the bottom of the tower crane is penetrated into the basement and fixedly connected to the basement, and a connecting rod is provided on one side of the tower crane passing through the basement, and the connecting rod is fixedly connected between the tower body and the structural steel column.

[0016] By adopting the above technical solution, the structure can be applied to occasions where there are no suitable installation conditions on the ground, thereby ensuring the stability of the tower crane after installation.

[0017] Optionally, the connecting rod is provided in plurality and is respectively connected to a plurality of nodes at the same height of the tower body.

[0018] The adoption of the above technical solution helps to enhance the tensioning and supporting effect of the connecting rod on the tower body.

[0019] Optionally, the connecting rods are provided in multiple groups and are evenly spaced and arranged along the height direction of the tower body.

[0020] By adopting the above technical solution, the tensioning and supporting effect of the connecting rod on the tower body can be further enhanced.

[0021] Optionally, a lifting frame is also provided at the top of the structural steel column, and an electric hoist is provided on the lifting frame.

[0022] By adopting the above technical solution, the dome frame is first spliced ​​in the area surrounded by the structural steel columns, and then the internal dome frame is hoisted by the electric hoist on the lifting frame, which can make the hoisting process of the dome frame simpler and more stable.

[0023] In a second aspect, the present application provides a construction method, which adopts the following technical solution: A construction method, using any of the tower crane support structures described above, comprises the following steps: a. Stack standard sections to complete the tower construction; b. Fix the cross bar to the extension rod, hoist the extension rod to the top of the structural steel column and fix it to the structural steel column; c. Fix the end of the cross bar away from the extension bar to the tower body to complete the installation of the tower crane support structure; d. Disassemble all the connections between the crossbars and the tower body, loosen the locking assembly, shorten the crossbars, slide the standard section at the top of the tower body to the climbing frame outside the tower body, and hang the standard section with a hook; e. Loosen the connection between the topmost crossbar and the extension rod, rotate the crossbar so that one end of the crossbar faces the standard section on the climbing frame, fix the rotated crossbar and the extension rod together, extend the crossbar, and then fix the end of the crossbar and the standard section on the climbing frame together; f. Disassemble the connection between the extension rod and the structural steel column, lift the standard section with the hook and slide it along the boom of the tower crane, then lower the standard section together with the crossbar and extension rod connected to the standard section to complete the dismantling of the tower crane support structure.

[0024] By adopting the above technical solution, an extension rod that plays a supporting role can be set on the structural steel column, and then the cross bar is connected between the top of the tower body and the extension rod, so that the top of the tower body can be supported, thereby improving the stability of the tower body; in the subsequent dismantling process, the cross bar and the extension rod can be fixed on the standard section at the top, and then the drop process of the cross bar and the extension rod can be completed together with the falling process of the standard section. The supporting structure can complete the drop process at one time, and there is no need for the hook to go back and forth many times, which is more convenient.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The extension rod installed at the top of the structural steel column and the cross bar installed between the extension rod and the tower body can support the top of the tower body, so that when constructing the dome building structure, the tower crane can maintain better stability and safety.

[0026] 2. The bottom of the tower crane is set in the basement, so the structure can be used in scenarios where there are no suitable installation conditions on the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 yes Figure 1 The enlarged schematic diagram of point A in the middle; Figure 3 is a cross-sectional view of an embodiment of the present application for illustrating a locking assembly; Figure 4 yes Figure 3 The enlarged schematic diagram of point B in the middle; Figure 5 This is a schematic diagram of the structure after the standard section slides to the outside of the tower body in the embodiment of the present application; Figure 6 yes Figure 5 Enlarged schematic diagram of point C in the middle.

[0028] Figure numerals: 1. structural steel column; 2. tower crane; 21. tower body; 211. standard section; 22. climbing frame; 23. hook; 3. extension rod; 4. cross bar; 41. fixed rod; 411. receiving groove; 412. installation groove; 42. movable rod; 5. locking assembly; 51. locking bolt; 52. tooth block; 53. rack; 6. basement; 7. connecting rod; 8. lifting frame; 9. electric hoist; 10. connecting rod; 11. connecting ring. DETAILED DESCRIPTION

[0029] The following combination Figure 1-Figure 6 This application is described in further detail.

[0030] The present application embodiment discloses a tower crane support structure. Figure 1 , the tower crane support structure is arranged between the structural steel column 1 and the tower crane 2. The tower crane 2 includes a tower body 21, a climbing frame 22, a boom and a hook 23. The tower body 21 is formed by stacking a plurality of standard sections 211 in the vertical direction; the boom is arranged at the top of the tower body 21, and the hook 23 is slidably arranged on the boom. The climbing frame 22 is slidably arranged on the outside of the tower body 21 in the vertical direction, and a self-locking structure is arranged on the climbing frame 22, so that the climbing frame 22 can be locked at the current height after sliding, and the climbing frame 22 can be used to support the standard section 211 at the top, thereby completing the construction and dismantling of the tower body 21.

[0031] The structural steel column 1 is a vertically arranged steel structure. There are multiple structural steel columns 1 and they are arranged in a circular array. A connecting rod 10 is fixedly installed between two adjacent structural steel columns 1. The structural steel columns 1 and the connecting rod 10 together constitute the steel skeleton of the dome building structure (only the vertical skeleton part of the dome building structure is shown in the figure, and the dome skeleton structure is not shown).

[0032] The supporting structure of the tower crane 2 includes an extension rod 3, a cross rod 4 and a locking assembly 5. Two extension rods 3 are provided, both of which are vertically arranged; the bottom end of the extension rod 3 and the top end of the structural steel column 1 are both provided with a connecting ring 11, the connecting ring 11 at the bottom end of the extension rod 3 and the connecting ring 11 at the top end of the structural steel column 1 are abutted, and bolts are passed through the two connecting rings 11, and nuts are threadedly connected to the ends of the bolts, so that the extension rod 3 is fixedly connected to the structural steel column 1.

[0033] There are multiple groups of crossbars 4, which are evenly spaced in the vertical direction; each group includes four crossbars 4 at the same height. (Only the top group is shown in the drawing) Both ends of the crossbar 4 are provided with perforations, and correspondingly, the tower body 21 (the tower body 21 is spliced ​​by multiple standard sections 211) and the extension rod 3 are fixed with connecting ears, so that the crossbar 4 and the tower body 21, as well as the crossbar 4 and the extension rod 3 can be detachably fixedly connected by inserting bolts and tightening nuts. The crossbar 4 connected between the tower body 21 and the extension rod 3 can support the top of the tower body 21, thereby enhancing the stability of the tower crane 2.

[0034] Reference Figure 2 , Figure 3 and Figure 4 The crossbar 4 is a telescopic rod, and the crossbar 4 can be extended or shortened, so the length of the crossbar 4 is adjustable. The crossbar 4 includes a fixed rod 41 and a movable rod 42; one end of the fixed rod 41 is fixedly connected to the extension rod 3, and the other end of the fixed rod 41 is provided with a mounting groove 412, and one end of the movable rod 42 is slidably arranged in the mounting groove 412, so that the movable rod 42 and the fixed rod 41 are slidably connected. The locking assembly 5 is arranged between the fixed rod 41 and the movable rod 42, and the locking assembly 5 is used to fix the movable rod 42 to the fixed rod 41.

[0035] Reference Figure 4The locking assembly 5 includes a locking bolt 51, a tooth block 52 and a rack 53. A protrusion is fixedly connected to the side wall of the fixing rod 41, and a threaded hole is provided on the protrusion. One end of the locking bolt 51 is inserted into the threaded hole and is threadedly connected with the threaded hole. A receiving groove 411 is also provided on the protrusion. The receiving groove 411 is connected with the mounting groove 412 and the threaded hole at the same time, so that one end of the locking bolt 51 is located in the receiving groove 411. The tooth block 52 is slidably arranged in the receiving groove 411 along the length direction of the locking bolt 51, and the teeth of the tooth block 52 face the side away from the locking bolt 51. The tooth block 52 and the end of the locking bolt 51 are rotatably connected, so that under the limiting effect of the receiving groove 411 on the tooth block 52, the locking bolt 51 can be rotated to make the tooth block 52 slide along the inner wall of the receiving groove 411. The rack 53 is fixedly connected to the movable rod 42 along the length direction of the movable rod 42, and the teeth of the rack 53 face the side close to the tooth block 52. Therefore, by turning the locking bolt 51, the teeth of the tooth block 52 are pressed against the rack 53, and the sliding of the movable rod 42 relative to the fixed rod 41 can be restricted, so that the movable rod 42 is fixedly connected to the fixed rod 41.

[0036] Reference Figure 5 and Figure 6After the construction is completed, when it is necessary to dismantle the supporting structure of the tower crane 2, all the bolts and nuts between the movable rods 42 and the tower body 21 can be removed first, and the connection between the movable rods 42 and the tower body 21 can be cancelled; then the locking bolt 51 is rotated to make the tooth block 52 slide toward the side away from the rack 53, and the locking of the movable rod 42 is cancelled; then the movable rod 42 is slid into the mounting groove 412 of the fixed rod 41 to shorten the length of the crossbar 4. After shortening the length of each crossbar 4, the crossbar 4 can be located outside the tower body 21, and the crossbar 4 will not interfere with the subsequent movement of the standard section 211. Then, the bolts between the standard section 211 at the top of the tower crane 2 and the standard section 211 below are removed, and the standard section 211 at the top is horizontally moved outward to the support platform of the climbing frame 22, so that the standard section 211 is located outside the tower body 21, and the top of the standard section 211 is hung by the hook 23. Then, loosen the nut at the connection between the fixed rod 41 at the top of the extension rod 3 and the extension rod 3, rotate the group of fixed rods 41, and make the fixed rods 41 face the standard section 211 on the climbing frame 22; then tighten the nut to fix the group of fixed rods 41 and the extension rod 3. Then, slide the movable rod 42 out of the fixed rod 41, and fix the end of the movable rod 42 and the standard section 211 on the climbing frame 22 with bolts and nuts, so that the extension rod 3 is fixed to the standard section 211 on the climbing frame 22 through the cross bar 4. Then, remove the bolts and nuts at the connection between the extension rod 3 and the structural steel column 1, slide the standard section 211 on the climbing frame 22 outward and lower it through the hook 23, and the support structure of the tower crane 2 can be dismantled; the standard section 211 at the top can be dismantled at the same time. The remaining standard sections 211 of the tower body 21 can be removed in a conventional manner, that is, each time the climbing frame 22 moves down a section, a standard section 211 at the top can be removed until the tower body 21 is completely removed.

[0037] Reference Figure 5 The bottom of the tower body 21 is passed through the basement 6 below the dome building structure, and the foundation of the tower crane 2 is fixedly set on the bottom plate of the basement 6, thereby supporting the tower crane 2. In order to improve the stability of the tower crane 2, a connecting rod 7 is provided on the side of the tower body 21 passing through the basement 6, one end of the connecting rod 7 is fixedly connected to the tower body 21, and the other end of the connecting rod 7 is fixedly connected to the structural steel column 1; there are multiple groups of connecting rods 7, and they are evenly spaced and arranged in the vertical direction; each group includes four horizontally arranged connecting rods 7 at the same height. Therefore, the connecting rod 7 arranged between the tower body 21 and the structural steel column 1 can play a role in pulling the tower body 21, thereby improving the stability of the tower crane 2.

[0038] In addition, a lifting frame 8 is provided at the top of each structural steel column 1, and an electric hoist 9 is fixedly connected to the lifting frame 8, so that the steel frame of the dome part can be spliced ​​first inside the steel frame surrounded by the structural steel columns 1, and then the spliced ​​dome steel frame structure is lifted by the lifting frame 8 and the electric hoist 9 located on the structural steel columns 1, thereby improving the stability of the dome frame lifting process.

[0039] The implementation principle of a support structure of the embodiment of the present application is as follows: during installation, the foundation of the tower crane 2 can be first fixedly set on the bottom plate of the basement 6, and then the tower body 21 of the tower crane 2 can be stacked, and the connecting rod 7 can be connected between the tower body 21 and the structural steel column 1 to improve the stability of the tower body 21. After the tower body 21 is stacked, the cross bar 4 and the extension rod 3 can be spliced, and the cross bar 4 can be fixedly connected to the extension rod 3 so that the cross bar 4 and the extension rod 3 form a whole, and then the whole is hoisted to the top of the structural steel column 1; then the extension rod 3 is fixedly connected to the top of the structural steel column 1, and then the cross bar 4 is stretched and locked, and the end of the cross bar 4 is fixedly connected to the tower body 21, so as to complete the installation of the support structure of the tower crane 2.

[0040] After the construction of the dome building structure is completed, when it is necessary to dismantle the tower crane 2 support structure and the tower crane 2, first dismantle all the connections between the crossbars 4 and the tower body 21; then shorten the crossbars 4, and slide the standard section 211 at the top of the tower body 21 horizontally to the outer climbing frame 22; then hang the top of the standard section 211 through the hook 23. Then loosen the connection between the topmost crossbar 4 and the extension rod 3, rotate the crossbar 4, and then fix the crossbar 4 and the extension rod 3 together; extend and lock the rotated crossbar 4, and then fix the end of the crossbar 4 to the standard section 211 located on the climbing frame 22. Then dismantle the connection between the extension rod 3 and the structural steel column 1. At this time, the extension rod 3 is fixed to the standard section 211 through the crossbar 4. Later, you only need to lower the standard section 211 to the ground through the hook 23 to complete the dismantling process of the top support structure of the tower crane 2, and the dismantling process is simpler.

[0041] This embodiment also discloses a construction method, comprising the following steps: Step a. Fix the base of the tower crane 2 on the bottom plate of the basement 6 , assemble the standard sections 211 , and complete the construction of the tower body 21 .

[0042] Step b. Fixedly connect the connecting rod 7 between the tower body 21 and the structural steel column 1 .

[0043] Step c. fix the cross bar 4 on the extension rod 3 , hoist the extension rod 3 to the top of the structural steel column 1 , and fix the bottom end of the extension rod 3 to the top of the structural steel column 1 .

[0044] Step d. Extend the crossbar 4 and fix the end of the crossbar 4 to the tower body 21 to complete the installation process of the tower crane 2 support structure.

[0045] Step e. After the construction of the dome building structure is completed, when the tower crane 2 supporting structure needs to be dismantled, firstly disconnect all the connections between the cross bars 4 and the tower body 21 and shorten the cross bars 4.

[0046] Step f. Slide the standard section 211 at the top of the tower body 21 horizontally onto the climbing frame 22 so that the standard section 211 is located outside the tower body 21 , and hang the top of the standard section 211 through the hook 23 .

[0047] Step g. Loosen the connection between the topmost cross bar 4 and the extension bar 3, rotate the cross bar 4 so that the cross bar 4 faces the standard section 211 on the climbing frame 22; then extend the cross bar 4 and fix the end of the cross bar 4 to the standard section 211 on the climbing frame 22.

[0048] Step h. Disconnect the connection between the extension rod 3 and the structural steel column 1, and move the standard section 211, the cross bar 4 and the extension rod 3 to the ground through the hook 23 to complete the dismantling process of the tower crane 2 supporting structure.

[0049] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tower crane support structure, arranged between a structural steel column (1) and a tower crane (2), the tower crane (2) comprising a tower body (21), a climbing frame (22), a boom and a hook (23), the tower body (21) comprising a plurality of standard sections (211), characterized in that: The utility model comprises an extension rod (3), a cross rod (4) and a locking assembly (5), wherein the extension rod (3) is fixedly connected to the top end of the structural steel column (1) in the vertical direction, the cross rod (4) is arranged between the tower body (21) and the extension rod (3), one end of the cross rod (4) is detachably fixedly connected to the tower body (21), and the other end of the cross rod (4) is detachably fixedly connected to the extension rod (3), the cross rod (4) is a telescopic rod, and the locking assembly (5) is arranged on the cross rod (4) and is used to lock the cross rod (4) at the current length after the length is adjusted.

2. A tower crane support structure according to claim 1, characterized in that: The cross bar (4) comprises a coaxially arranged fixed rod (41) and a movable rod (42); the fixed rod (41) is detachably fixedly connected to the extension rod (3); one end of the movable rod (42) is slidably arranged in the fixed rod (41); and the locking assembly (5) is arranged between the fixed rod (41) and the movable rod (42).

3. A tower crane support structure according to claim 2, characterized in that: The locking assembly (5) comprises a locking bolt (51), a tooth block (52) and a rack (53); the locking bolt (51) is arranged along the radial direction of the fixed rod (41); the locking bolt (51) is threadedly connected to the fixed rod (41); an accommodating groove (411) is provided on the inner wall of the fixed rod (41); the tooth block (52) is slidably arranged in the accommodating groove (411); the tooth block (52) is rotatably connected to the end of the locking bolt (51); the rack (53) is fixedly connected to the movable rod (42) along the length direction of the movable rod (42); the rack (53) is located on a side of the movable rod (42) close to the tooth block (52); and the rack (53) is used to mesh with the tooth block (52).

4. A tower crane support structure according to claim 1, characterized in that: A plurality of cross bars (4) are provided and are respectively connected to a plurality of nodes of the tower body (21), and each of the cross bars (4) is located at the same height.

5. A tower crane support structure according to claim 4, characterized in that: The cross bars (4) are provided in multiple groups and are arranged at intervals along the length direction of the extension rod (3).

6. A tower crane support structure according to claim 1, characterized in that: The bottom of the tower crane (2) is inserted into the basement (6) and is fixedly connected to the basement (6); a connecting rod (7) is provided on the side of the tower crane (2) that passes through the basement (6); and the connecting rod (7) is fixedly connected between the tower body (21) and the structural steel column (1).

7. A tower crane support structure according to claim 6, characterized in that: The connecting rods (7) are provided in plurality and are respectively connected to a plurality of nodes at the same height of the tower body (21).

8. A tower crane support structure according to claim 7, characterized in that: The connecting rods (7) are provided in multiple groups and are evenly spaced and arranged along the height direction of the tower body (21).

9. A tower crane support structure according to claim 1, characterized in that: A lifting frame (8) is also provided at the top end of the structural steel column (1), and an electric hoist (9) is provided on the lifting frame (8).

10. A construction method using the tower crane support structure according to any one of claims 1 to 9, characterized in that: The construction method comprises the following steps: a. Stacking standard sections (211) to complete the construction of the tower body (21); b. Fixing the cross bar (4) to the extension bar (3), hoisting the extension bar (3) to the top of the structural steel column (1) and fixing it to the structural steel column (1); c. Fixing the end of the cross bar (4) away from the extension bar (3) to the tower body (21) to complete the installation of the tower crane support structure; d. Disconnect all the connections between the crossbars (4) and the tower body (21), loosen the locking assembly (5), shorten the crossbar (4), slide the standard section (211) at the top of the tower body (21) onto the climbing frame (22) outside the tower body (21), and hang the standard section (211) with the hook (23); e. Loosen the connection between the topmost cross bar (4) and the extension bar (3), rotate the cross bar (4) so ​​that one end of the cross bar (4) faces the standard section (211) on the climbing frame (22), fix the rotated cross bar (4) and the extension bar (3) together, extend the cross bar (4), and then fix the end of the cross bar (4) and the standard section (211) on the climbing frame (22) together; f. Disconnect the connection between the extension rod (3) and the structural steel column (1), lift the standard section (211) with the hook (23) and slide it along the boom of the tower crane (2), and then lower the standard section (211) together with the cross bar (4) and the extension rod (3) connected to the standard section (211), thereby completing the removal of the tower crane support structure.

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