A tower floor accessway construction and method of using same

Abstract

The present application relates to a kind of tower crane floor passage structure and its using method.A kind of tower crane floor passage structure, including tower crane standard section and passage structure, passage structure one end is hinged to the bottom side of tower crane standard section, the other end is connected to the top of tower crane standard section by cable, cable can be retracted and released, passage structure can be turned to the side of tower crane standard section.It will passage structure one end be hinged to the bottom side of tower crane standard section, the other end is connected to the top of tower crane standard section by cable, can be changed by the release of cable so that the passage structure of the side of tower crane standard section is changed from vertical to horizontal, in turn, floor and tower crane can be connected, after use, can be retracted by cable so that passage structure is turned from horizontal to the side of tower crane standard section, with tower crane standard section together, installation and disassembly procedure is simpler, and passage structure can be reused, and reduce personnel up and down tower crane control room safety hazard, reduce the time that up and down tower crane control room needs to climb from the bottom end of tower.

Description

Technical Field

[0001] This invention relates to the field of tower crane floor passageway technology, and in particular to a tower crane floor passageway structure and its usage method. Background Technology

[0002] Currently, in building construction projects, during the main construction phase, the commonly used tower crane operator access passageways are simply constructed and protected using steel pipes and formwork. In recent years, with the rapid development of the construction industry, the number of floors and building heights in buildings have increased significantly. During actual construction, as tower cranes are added and raised, the difficulty for tower crane operators and inspectors to access the control room increases. Without a proper access passageway, personnel entering the control room at the top of the tower crane would have to climb hundreds of meters to reach it. Especially after the rainy season, access to the control room becomes difficult and poses a risk of slipping and falling. Therefore, it is necessary to install a proper access passageway for tower crane operators.

[0003] In actual construction, a passageway structure for tower cranes to pass through each floor is erected approximately every five floors. The structure uses materials such as steel pipes and formwork. The installation process is complicated and requires a lot of materials. Some materials, such as formwork, cannot be reused after being exposed to wind, sun and rain. Furthermore, erecting structures at a height of hundreds of meters is not conducive to ensuring the safety of the workers.

[0004] The existing technology struggles to create a tower crane floor passageway structure that allows for material reuse, is easy to install and dismantle, and offers high safety during installation and dismantling. This is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to address the problems of existing tower crane floor passage structures, such as the inability to reuse materials and difficulties in installation and dismantling, by providing a tower crane floor passage structure and its usage method.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A tower crane floor access structure includes a tower crane standard section and an access structure. One end of the access structure is hinged to the bottom side of the tower crane standard section, and the other end is connected to the top of the tower crane standard section via a cable. The cable can be retracted and extended, and the access structure can be flipped to the side of the tower crane standard section.

[0008] In this plan, a standard tower crane section refers to a segment of the tower crane's body. Installing these standard sections one by one increases the tower's height. The access structure must ensure safety for personnel crossing the tower crane, connecting the floors and reducing safety hazards for personnel going up and down to the tower crane control room, as well as minimizing the time required to climb from the bottom of the tower crane to reach the control room.

[0009] The suspended floor passage structure described in this solution has one end hinged to the bottom side of the tower crane standard section, and the other end connected to the top of the tower crane standard section via a cable. This allows the passage structure on the side of the tower crane standard section to change from vertical to horizontal by releasing the cable, thereby connecting the floor and the tower crane. After use, the passage structure can be flipped from horizontal to the side of the tower crane standard section by retracting the cable, and can be installed and dismantled together with the tower crane standard section. The installation and dismantling process is simpler, and the passage structure can be reused.

[0010] Preferably, the channel structure includes a bottom support and guardrails on both sides of the bottom support, and both the bottom support and the guardrails on both sides can be flipped to the side of the tower crane standard section.

[0011] The bottom support and the guardrails on both sides can be flipped to the side of the standard tower crane section, avoiding the need to install the bottom support and guardrails at high altitude, making it safer and more convenient to use.

[0012] Preferably, the bottom support includes longitudinal tread bars and several transverse tread bars located on both sides of the channel structure. The longitudinal tread bars are arranged longitudinally along the channel structure, and the transverse tread bars are arranged transversely along the channel structure. The longitudinal tread bars on both sides are connected by all the transverse tread bars. A tread plate is laid on the transverse tread bars, and one end of the longitudinal tread bar near the bottom of the tower crane standard section is hinged to the tower crane standard section.

[0013] The guardrail includes two upper horizontal bars, two waist bars, and several upright bars. The two upper horizontal bars are located on both sides of the passage structure, and the two waist bars are also located on both sides of the passage structure. The ends of the upper horizontal bars and waist bars near the bottom of the tower crane standard section are detachably connected to the tower crane standard section. The waist bars are located between the upper horizontal bars and the tread longitudinal bars on the same side. The tread longitudinal bars, waist bars, and upper horizontal bars on the same side are connected by several upright bars.

[0014] The guardrail upright includes an upper section and a lower section, which are hinged together by a first rotating hinge. The first rotating hinge is located on the side of the guardrail upright near the bottom of the tower crane standard section, and is located between the upper horizontal bar and the waist bar of the guardrail.

[0015] The tread longitudinal bar is hinged to the bottom of the lower section of the guardrail upright via a second rotating hinge. The second rotating hinge is located on the side of the guardrail upright away from the bottom of the tower crane standard section. The upper part of the lower section of the guardrail upright is connected to the guardrail waist bar via a first rotating shaft.

[0016] The upper end of the guardrail upright is hinged to the upper crossbar of the guardrail via a third rotating hinge, which is located on the side of the guardrail upright away from the bottom of the tower crane standard section.

[0017] By adopting the above-mentioned passage structure, under the premise of ensuring the safety of the passage structure, the bottom support and the guardrails on both sides can be flipped to the side of the standard tower crane section.

[0018] Preferably, the end of the guardrail that is away from the bottom of the standard tower crane section is retractable.

[0019] To avoid situations where the guardrail's waist bar protrudes in some areas, making it difficult to add or remove sections of the tower crane using standard tower crane sections.

[0020] Preferably, the cable is connected to the tread crossbar at one end of the passage structure away from the bottom of the tower crane standard section, and the cable is located between the guardrails on both sides.

[0021] The cable connection point is located at the tread crossbar 10 to avoid wear caused by friction between the cable and the guardrail upright, resulting in better durability and higher safety.

[0022] Preferably, the standard section of the tower crane is provided with a U-shaped fastener with an opening facing downwards. The U-shaped fastener is used to fit the upper horizontal bar of the guardrail or the waist bar of the guardrail. The upper horizontal bar of the guardrail and the waist bar of the guardrail are fixedly connected to the opening of the corresponding U-shaped fastener by high-strength screws.

[0023] This design facilitates the flipping and fixing of the upper horizontal bars and the waist bars of the guardrail into a channel structure, making installation and dismantling more convenient and use safer.

[0024] Preferably, the top of the tower crane standard section is provided with a second rotating shaft, the second rotating shaft is arranged laterally along the channel structure, the second rotating shaft is driven by a motor, and one end of the cable is wound around the second rotating shaft.

[0025] The motor drives the second rotating shaft to rotate, which in turn causes the cable to wind back or unwind, thereby controlling the flipping of the channel structure.

[0026] Preferably, a limiting plate is provided above the second rotating shaft to limit the cable downward, so that the cable can move along the axial direction of the second rotating shaft during the winding process, and avoid the cable winding diameter being too large and getting knotted.

[0027] And / or,

[0028] It also includes a motor limiter, which is used to limit the axial movement of the motor along the second rotation axis;

[0029] And / or,

[0030] It also includes a control panel, which is used to control the motor, making it easier to operate the flipping of the channel structure and more convenient to use.

[0031] Preferably, the top of the tower crane standard section is provided with a fixing device, which is used to detachably fix the channel structure that is flipped to the side of the tower crane standard section.

[0032] When the passage structure is flipped to the side of the tower crane standard section, the passage structure is detachably fixed to the tower crane standard section by a fixing device to reduce the load on the motor under normal conditions.

[0033] A method for using a tower crane floor access structure includes the following steps:

[0034] S1. Install the tower crane floor access structure at the specified height of the tower crane;

[0035] S2. When a passageway structure is required, the passageway structure on the side of the tower crane standard section is flipped to the horizontal by releasing the cables, and then the passageway structure is connected to the floor.

[0036] S3. After the passage structure is used up, disconnect the passage structure from the floor, and then flip the passage structure to the side of the tower crane standard section by retracting the cable.

[0037] The above-described method of using the tower crane floor access structure involves fixing the access structure to the side of the tower crane standard section and installing it together with the standard section. During use, the access structure on the side of the standard section is flipped horizontally, and then connected to the floor. This minimizes high-altitude work, ensuring safe operation. When not in use, the connection between the access structure and the floor is released, and the access structure is flipped to the side of the standard section, allowing for disassembly together. This simplifies the installation and disassembly process, allows for reuse of the access structure, reduces safety hazards for personnel accessing the tower crane control room, and minimizes the time required to climb from the bottom of the tower crane to access the control room.

[0038] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0039] 1. The suspended floor passage structure of the present invention has one end hinged to the bottom side of the tower crane standard section and the other end connected to the top of the tower crane standard section by a cable. This allows the passage structure on the side of the tower crane standard section to change from vertical to horizontal by releasing the cable, thereby connecting the floor and the tower crane. After use, the passage structure can be flipped from horizontal to the side of the tower crane standard section by retracting the cable, and can be installed and dismantled together with the tower crane standard section. The installation and dismantling process is simpler, and the passage structure can be reused. It can reduce the safety hazards of personnel going up and down the tower crane control room and reduce the time required to climb from the bottom of the tower crane to go up and down the tower crane control room.

[0040] 2. The method of using the tower crane floor access structure described in this invention involves fixing the access structure to the side of the tower crane standard section and installing it together with the tower crane standard section. In use, the access structure on the side of the tower crane standard section is flipped to a horizontal position, and then connected to the floor. This minimizes high-altitude work, ensuring safe use. When no longer needed, the connection between the access structure and the floor is released, and the access structure is flipped to the side of the tower crane standard section, allowing for disassembly of the access structure and the tower crane standard section together. This simplifies the installation and disassembly process, allows for reuse of the access structure, reduces safety hazards for personnel going up and down the tower crane control room, and reduces the time required to climb from the bottom of the tower crane to access the control room. Attached Figure Description

[0041] Figure 1 This is a structural schematic diagram of the tower crane floor passage structure of the present invention (in use).

[0042] Figure 2 yes Figure 1 A magnified view of a portion of circle A in the middle;

[0043] Figure 3 This is a structural schematic diagram of the tower crane floor passage structure of the present invention (in non-use state);

[0044] Figure 4 yes Figure 3 A magnified view of a portion of circle B in the middle;

[0045] Figure 5 yes Figure 3 A magnified view of a portion of the area circled in middle C;

[0046] Figure 6 This is a structural schematic diagram of a standard tower crane section;

[0047] Figure 7 Is Figure 6 A schematic diagram showing the installation of structures such as horizontal fixing plates and U-shaped fasteners on the basis of the original structure;

[0048] Figure 8 yes Figure 7 A magnified view of a portion of the area circled in the middle, D.

[0049] Figure 9 yes Figure 7 A magnified view of a portion of circle E in the middle;

[0050] Figure 10 Is Figure 7 A schematic diagram showing the installation of tread crossbars and tread longitudinal bars on the basis of the original structure;

[0051] Figure 11 yes Figure 10 A magnified view of the area at point F in the middle circle;

[0052] Figure 12 yes Figure 10 A magnified view of a portion of the area circled in the middle, G.

[0053] Figure 13 Is Figure 10 A schematic diagram of the installation of guardrails based on the existing structure.

[0054] Icons: 1. Tower crane standard section; 101. Horizontal connector; 102. Diagonal reinforcement; 103. Connecting plate; 104. Column; 2. Channel structure; 5. Horizontal fixing plate; 6. U-shaped fastener; 61. High-strength screw; 7. Lower fixing plate; 8. Bearing; 9. Tread longitudinal bar; 10. Tread cross bar; 11. Limiting plate; 12. Motor; 13. Motor limiter; 14. Second rotating shaft; 141. Shaft 15. Limiting structure; 16. Upper crossbar of guardrail; 17. Waist bar of guardrail; 18. Cable; 19. Control panel; 20. Pedal; 21. Safety net; 221. First rotating hinge; 222. Second rotating hinge; 223. Third rotating hinge; 112. Guardrail upright; 1121. Lower section; 1122. Upper section; 119. First rotating shaft; 121. Telescopic section; 122. High-strength bolt. Detailed Implementation

[0055] The present invention will now be described in detail with reference to the accompanying drawings.

[0056] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0057] Example 1

[0058] This embodiment provides a tower crane floor passage structure, see [link / reference] Figure 1 and Figure 3 The system includes a tower crane standard section 1 and a channel structure 2. One end of the channel structure 2 is hinged to the bottom side of the tower crane standard section 1, and the other end is connected to the top of the tower crane standard section 1 via a cable 17. The cable 17 can be retracted and extended, and the channel structure 2 can be flipped to the side of the tower crane standard section 1.

[0059] In this design, the tower crane standard section 1 refers to the segment of the tower crane's tower body. Installing each tower crane standard section 1 increases the tower's height. The passageway structure 2 needs to ensure safety for personnel crossing the tower crane. The passageway structure 2 connects the floors and the tower crane, reducing safety hazards for personnel accessing the tower crane control room and minimizing the time spent climbing from the bottom of the tower crane to reach the control room. One end of the passageway structure 2 is hinged to the bottom side of the tower crane standard section 1. Existing technology can be used for the hinge, but space must be provided for the passageway structure 2 to rotate to the side of the tower crane standard section 1. The other end of the passageway structure 2 is connected to the top of the tower crane standard section 1 via cable 17. This ensures that the passageway structure 2 can rotate freely. Figure 1 When the structure is in usable condition, the load-bearing capacity of the channel structure 2 is sufficient; secondly, it can be retracted and extended via the cable 17, allowing the channel structure 2 to be flipped to the side of the tower crane standard section 1, such as... Figures 1 to 3 The state shown.

[0060] The suspended floor passage structure described in this scheme has one end of the passage structure 2 hinged to the bottom side of the tower crane standard section 1, and the other end of the passage structure 2 connected to the top of the tower crane standard section 1 via a cable 17. This allows the passage structure 2 on the side of the tower crane standard section 1 to change from vertical to horizontal by releasing the cable 17. Figures 3 to 1 In this state, it can connect the floors and the tower crane. After use, the channel structure 2 can be flipped from horizontal to the side of the tower crane standard section 1 by retracting the cable 17, as shown. Figures 3 to 1 In this configuration, the channel structure 2 can be installed and dismantled together with the tower crane standard section 1, making the installation and dismantling process simpler, and the channel structure 2 can be reused.

[0061] Generally, the passage structure 2 includes not only the bottom support, but also guardrails on both sides of the bottom support because it involves high-altitude passage. In this embodiment, it is possible that only the bottom support is flipped, and the guardrails are installed and removed on the basis of the bottom support without flipping the guardrails, or the bottom support and guardrails are flipped in two separate steps, or the guardrails are flipped at the same time as the bottom support.

[0062] Example 2

[0063] This embodiment provides a tower crane floor access structure, based on embodiment 1, see [link to embodiment 1]. Figure 1 and Figure 3 The bottom support and the guardrails on both sides can be flipped to the side of the standard tower crane section 1, avoiding the need to install the bottom support and guardrails at high altitudes, making it safer and more convenient to use.

[0064] In a preferred embodiment, the bottom support and the side railings can all be simultaneously rotated to the sides of the standard tower crane section 1. For example... Figure 1 and Figure 2 As shown, the bottom support includes longitudinal tread bars 9 and several transverse tread bars 10 located on both sides of the channel structure 2. The longitudinal tread bars 9 are arranged longitudinally along the channel structure 2, and the transverse tread bars 10 are arranged transversely along the channel structure 2. The longitudinal tread bars 9 on both sides are connected by all the transverse tread bars 10. A tread plate 20 is laid on the transverse tread bars 10. One end of the longitudinal tread bar 9 near the bottom of the tower crane standard section 1 is hinged to the tower crane standard section 1, so that the longitudinal tread bar 9 can rotate vertically with the entire bottom support.

[0065] like Figure 6 As shown, this embodiment provides a preferred tower crane standard section 1. The tower crane standard section 1 includes four vertical columns, several horizontal connectors 101, several diagonal reinforcements 102, and several connecting plates 103. The four vertical columns 104 are arranged in a rectangular pattern. The several horizontal connectors 101 form several rectangles. The rectangles formed by the horizontal connectors 101 are located at different heights of the columns 104 and connect the four columns into a whole. The connecting plates 103 are located at the corners formed by some of the horizontal connectors 101 and the columns 104. The diagonally arranged connecting plates 103 are connected together by the diagonal reinforcements 102 to strengthen the corners at the connection between the horizontal connectors 101 and the columns 104. In this solution, no two connecting plates 103 are connected to the same horizontal connector 101 and column 104.

[0066] like Figure 2 As shown, a clamping plate formed by a horizontal fixing plate 5 is provided at the bottom of two adjacent columns 104. The tread longitudinal bar 9 is inserted into the clamping plate and connected by a hinge shaft. That is, the tread longitudinal bar 9, along with the tread cross bar 10 and the pedal 20, can rotate around the hinge shaft passing through the clamping plate.

[0067] like Figure 2 , Figure 4 and Figure 5 As shown, the guardrail includes two upper horizontal bars 15, two waist bars 16, and several upright bars 112. The two upper horizontal bars 15 are located on both sides of the passage structure 2, and the two waist bars 16 are located on both sides of the passage structure 2. The ends of the upper horizontal bars 15 and the waist bars 16 near the bottom of the tower crane standard section 1 can be detachably connected to the tower crane standard section 1. The waist bars 16 are located between the upper horizontal bars 15 and the tread longitudinal bars 9 on the same side. The tread longitudinal bars 9, the waist bars 16, and the upper horizontal bars 15 on the same side are connected by several upright bars 112.

[0068] The guardrail upright 112 includes an upper section 1122 and a lower section 1121, which are hinged together by a first rotating hinge 221. The first rotating hinge 221 is located on the side of the guardrail upright 112 near the bottom of the tower crane standard section 1, and is situated between the upper horizontal bar 15 and the waist bar 16 of the guardrail. Figure 2 Change to Figure 4 This allows the upper section 1122 and the lower section 1121 to be folded together via the first rotating hinge 221.

[0069] The tread longitudinal bar 9 is hinged to the bottom of the lower section 1121 of the guardrail upright 112 via a second rotating hinge 222. The second rotating hinge 222 is located on the side of the guardrail upright 112 away from the bottom of the tower crane standard section 1, so that the lower section 1121 can be folded together with the tread longitudinal bar 9. The upper part of the lower section 1121 of the guardrail upright 112 is connected to the guardrail waist bar 16 via a first rotating shaft 119, so that the guardrail waist bar 16, the lower section 1121 and the tread longitudinal bar 9 are folded together.

[0070] The upper end of the guardrail upright 112 is hinged to the upper crossbar 15 of the guardrail via a third rotating hinge 223. The third rotating hinge 223 is located on the side of the guardrail upright 112 away from the bottom of the tower crane standard section 1, so that the upper section 1122 of the guardrail upright 112 and the upper crossbar 15 of the guardrail are folded up. Through the first rotating hinge 221, the second rotating hinge 222, the third rotating hinge 223 and the first rotating shaft 119, when the upper crossbar 15 of the guardrail and the end of the guardrail waist bar 16 near the bottom of the tower crane standard section 1 are removed from the tower crane standard section 1, the bottom support and the guardrails on both sides can be simultaneously flipped from horizontal to the side of the tower crane standard section 1 by retracting the cable 17. In this embodiment, when the tower crane floor passage structure is located in Figure 2 In the indicated state, both the upper horizontal bar 15 and the waist bar 16 of the guardrail need to be fixed to the post 104, making the passage structure 2 safer to use. Figure 2 As shown, the tower crane standard section 1 is provided with a U-shaped fixing member 6 with an opening facing downwards. The U-shaped fixing member 6 is used to adapt to the upper horizontal bar 15 of the guardrail or the waist bar 16 of the guardrail. The upper horizontal bar 15 and the waist bar 16 of the guardrail are fixedly connected to the opening of the corresponding U-shaped fixing member 6 by high-strength screws 61. The high-strength screws 61 can be removed when it is necessary to flip the guardrail. The lower opening of the U-shaped fixing member 6 with an opening facing downwards does not affect the rotation of the upper horizontal bar 15 and the waist bar 16 of the guardrail. The U-shaped fixing member 6 facilitates the flipping of the upper horizontal bar 15 and the waist bar 16 of the guardrail into the limiting and fixing of the channel structure 2, making installation and dismantling more convenient and use safer.

[0071] When the tower crane floor passage structure is in Figure 1 In the configuration shown, the longitudinal bar 9 of the tread, the waist bar 16 of the guardrail, and the upper horizontal bar 15 of the guardrail are of the same length, while when from... Figure 1 Change to Figure 3 At that time, because the bottom support and the guardrails on both sides can simultaneously rotate from horizontal to the side of the standard section 1 of the tower crane, such as Figure 4 As shown, the ends of the tread longitudinal bar 9 and the upper horizontal bar 15 of the guardrail are still aligned, but the end of the guardrail waist bar 16 is no longer aligned with the ends of the tread longitudinal bar 9 and the upper horizontal bar 15. This causes the other end of the guardrail waist bar 16 to extend beyond the other ends of the tread longitudinal bar 9 and the upper horizontal bar 15. Under limitations such as floor height, this will affect the rotation of the passageway structure 2 and the upward stacking installation of the tower crane standard section 1; Figure 5 As shown, the end of the guardrail 16 away from the bottom of the tower crane standard section 1 is provided with a telescopic section 121, which can change the overall length of the guardrail 16. When the passage structure is in a horizontally extended state, the other end of the guardrail 16 is aligned with the corresponding end of the tread longitudinal bar 9 and the corresponding end of the guardrail upper horizontal bar 15. This avoids the guardrail 16 from protruding locally when the passage structure is in a vertically retracted state, which would make it difficult to add or remove tower crane sections through the tower crane standard section 1.

[0072] In this embodiment, as Figure 1 As shown, the cable 17 is connected to the tread crossbar 10 at the end of the passage structure 2 away from the bottom of the tower crane standard section 1. The cable 17 is located between the two side guardrails, and the connection point of the cable 17 is located at the tread crossbar 10 to avoid wear caused by friction between the cable 17 and the guardrail uprights 112, thus improving durability and safety. In this embodiment, the cable 17 can be a steel wire rope or the like.

[0073] In this embodiment, as Figures 1-5 As shown, the top of the tower crane standard section 1 is equipped with a second rotating shaft 14, which is arranged laterally along the channel structure 2. The second rotating shaft 14 is driven by a motor 12, and one end of the cable 17 is wound around the second rotating shaft 14. The motor 12 drives the second rotating shaft 14 to rotate, thereby causing the cable 17 to wind back or unwind, thus controlling the rotation of the channel structure 2. Specifically, as... Figure 5As shown, a horizontal connecting piece 101 at the top of the tower crane standard section 1 is provided with a lower fixing plate 7. There are two lower fixing plates 7 arranged opposite each other. Each lower fixing plate 7 has a through hole, and a bearing 8 is provided at the through hole. The two ends of the second rotating shaft 14 pass through the bearing 8 and are axially limited at the ends by an axial limiting structure 141. The motor 12 is fixed to the tower crane standard section 1 and is provided with a motor limiter 13. The motor limiter 13 is used to limit the axial movement of the motor 12 along the second rotating shaft 14. The motor 12 drives the second rotating shaft 14 to rotate within the bearings 8 at both ends, causing the cable 17 to wind back or unwind. In this embodiment, a small hole is made at the end of the second rotating shaft 14. The cable 17 passes through the small hole, is folded, and then fixed by a U-shaped buckle.

[0074] In this embodiment, a limiting plate 11 can also be provided above the second rotating shaft 14 to limit the pull cable 17 downward, so that the pull cable 17 can move along the axial direction of the second rotating shaft 14 during the winding process, and avoid the pull cable 17 from getting knotted due to excessive winding diameter.

[0075] In this embodiment, a control panel 19 can also be provided. The control panel 19 is used to control the motor 12, which facilitates the rotation of the channel structure 2 and makes it more convenient to use. Figure 13 As shown, the control panel 19 is located above the channel structure 2 and on the column 104. The control panel 19 is connected to the motor 12 via the cable 18 to achieve control.

[0076] In this embodiment, a fixing device is provided at the top of the tower crane standard section 1. This fixing device is used to detachably fix the channel structure 2, which is flipped to the side of the tower crane standard section 1. When the channel structure 2 is flipped to the side of the tower crane standard section 1, the fixing device detachably fixes the channel structure 2 to the tower crane standard section 1, reducing the load on the motor under normal operating conditions. Figure 3 and Figure 5 As shown, the fixing device includes a horizontal fixing plate 5 and a high-strength bolt 122. The horizontal fixing plate 5 is provided on the top side of the column 104. After the high-strength bolt 122 passes through the horizontal fixing plate 5, the folded channel structure 2 is fixed to the side of the tower crane standard section 1 to reduce the load on the motor under normal conditions.

[0077] In this embodiment, an installation method for a tower crane floor access structure is provided, including the following steps:

[0078] Step 1: After reinforcing the horizontal connector 101, the inclined reinforcement 102, the connecting plate 103, and the column 104, etc., the standard section 1 of the tower crane is formed, such as... Figure 6 As shown, standard section 1 of the tower crane is the original part of the tower crane with added sections;

[0079] Step 2, as follows Figures 7-9As shown, a horizontal fixing plate 5 is welded to the horizontal connecting piece 101 at the bottom of the standard tower crane section, and a U-shaped fixing piece 6 is welded to the column 104, as shown. Figure 9 As shown, this ensures that the upper horizontal bar 15 and the waist bar 16 of the guardrail are accurately connected from the opening below the U-shaped fixing member 6 after being flipped; the lower fixing plate 7 is welded to the horizontal connecting members 101 on both sides of the top of the tower crane standard section, and after holes are made in the lower fixing plate 7, bearings 8 are welded to the outside of the holes. The rotating part is connected to the tower crane standard section 1 as a whole, as shown. Figure 8 As shown;

[0080] Step 3, as follows Figures 10-12 As shown, the longitudinal tread bar 9 is connected to the transverse fixed plate 5 via a high-strength bolt as a hinge axis, allowing the longitudinal tread bar 9 to rotate around the high-strength bolt. This ensures that the rotated longitudinal tread bar 9 is parallel to the tower body of the standard tower crane section. Figure 11 As shown; a tread crossbar 10 is welded between two longitudinal tread bars 9 to form the support structure of the finished close-mesh tread 20; the motor 12 and motor limiter 13 are fixed to the lower fixing plate 7 after a hole is made in the middle, and the second rotating shaft 14 passes through the motor 12 and motor limiter 13. The rotation of the second rotating shaft 14 is controlled by the motor 12. The diameter of the second rotating shaft 14 is increased at both ends to form an axial limiting structure 141 to prevent it from rotating and falling off. Figure 12 As shown;

[0081] Step 4, as follows Figure 13 As shown, the guardrail upright 112 is connected to the tread longitudinal bar 9 via the second rotating hinge 222. The upper horizontal bar of the guardrail is connected to the upper end of the guardrail upright 112 via the third rotating hinge 223. The guardrail waist bar 16 is connected to the middle of the guardrail upright 112 via the first rotating shaft 119, which can be a rotating bolt. The guardrail upright 112 is divided into upper and lower sections, which are connected by the first rotating hinge 221. In the flipped and folded state, the guardrail and the tread support are almost on the same plane. After being flipped and unfolded, the guardrail can play a protective role. The control panel 19 is welded to the column 104 of the tower crane standard section. The control panel 19 is connected to the motor 12 via the cable 18. When the hoisting floor passage structure needs to be used, it can be flipped and unfolded simply by operating the control panel 19.

[0082] Step 5: Connect one end of the cable 17 to the end tread crossbar 10, and the other end to the second rotating shaft 14. Weld a prefabricated mesh step 20 above the tread crossbar 10. The second rotating shaft 14 is rotated by the motor 12 to retract the cable 17, thereby controlling the synchronous rotation of the bottom support and guardrail. Welding the prefabricated mesh step 20 above the tread crossbar 10 prevents personnel from stepping into gaps. After the suspended floor passage structure is horizontally unfolded, a safety net 21 is manually hung to prevent personnel from falling. Figure 1 As shown, the blind-eye pedal 20 and safety net 21 are for illustrative purposes only.

[0083] In this embodiment, the bottom support and guardrail of the channel structure 2 are connected to form a flip-foldable structure. Finally, the whole is pulled together by the cable 17 to form a rotating device. After rotation, the guardrail and bottom support are parallel to the vertical plane of the tower crane standard section and form a whole. After the tower crane standard section is added, it can be flipped and unfolded through the control panel 19.

[0084] Example 3

[0085] This embodiment provides a method for using a tower crane floor access structure, including the following steps:

[0086] S1. Install the tower crane floor passage structure described in the embodiment or embodiment 2 at the specified height of the tower crane;

[0087] S2. When the passage structure 2 is needed, the passage structure 2 on the side of the tower crane standard section 1 is flipped to the horizontal by releasing the cable 17, and then the passage structure 2 is connected to the floor.

[0088] S3. After the passage structure 2 is used up, disconnect the passage structure 2 from the floor, and then flip the passage structure 2 to the side of the tower crane standard section 1 by retracting the cable 17.

[0089] Using the above-described tower crane floor access structure, the access structure 2 is fixed to the side of the tower crane standard section 1 and installed together with the tower crane standard section 1. When in use, the access structure 2 on the side of the tower crane standard section 1 is flipped to a horizontal position, and then the access structure 2 is connected to the floor. This reduces high-altitude work and makes it safe to use. When not in use, the connection between the access structure 2 and the floor is disconnected, and the access structure 2 is flipped to the side of the tower crane standard section 1, so that the access structure 2 and the tower crane standard section 1 can be disassembled together. The installation and disassembly process is simpler, and the access structure 2 can be reused. It also reduces the safety hazards of personnel going up and down the tower crane control room and reduces the time required to climb from the bottom of the tower crane to go up and down the tower crane control room.

[0090] The present invention discloses a tower crane floor access structure and its usage method, which provides a process method that saves resources such as materials and manual installation and dismantling. The tower crane floor access structure has the advantages of recycling and sturdiness and stability, which solves the problems of difficult installation and dismantling, large safety hazards for workers going up and down the tower crane control room, and reusable construction materials in the prior art. It greatly improves the safety of workers going up and down the tower crane control room, and also improves the efficiency of workers going up and down the tower crane control room.

[0091] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tower crane floor passage structure, characterized in that, The system includes a standard tower crane section (1) and a passage structure (2). One end of the passage structure (2) is hinged to the bottom side of the standard tower crane section (1), and the other end is connected to the top of the standard tower crane section (1) via a cable (17). The cable (17) can be retracted and extended. The passage structure (2) can be flipped to the side of the standard tower crane section (1). The passage structure (2) includes a bottom support and guardrails on both sides of the bottom support. Both the bottom support and the guardrails on both sides can be flipped to the side of the standard tower crane section (1). The bottom support includes tread longitudinal bars (9) and several tread transverse bars (10) located on both sides of the channel structure (2). The tread longitudinal bars (9) are arranged longitudinally along the channel structure (2), and the tread transverse bars (10) are arranged transversely along the channel structure (2). The tread longitudinal bars (9) on both sides are connected by all the tread transverse bars (10). A tread plate (20) is laid on the tread transverse bar (10). One end of the tread longitudinal bar (9) near the bottom of the tower crane standard section (1) is hinged to the tower crane standard section (1). The guardrail includes two upper horizontal bars (15), two waist bars (16), and several upright bars (112). The two upper horizontal bars (15) are located on both sides of the passage structure (2), and the two waist bars (16) are located on both sides of the passage structure (2). The upper horizontal bars (15) and the waist bars (16) near the bottom of the tower crane standard section (1) can be detachably connected to the tower crane standard section (1). The waist bars (16) are located between the upper horizontal bars (15) and the tread longitudinal bars (9) on the same side. The tread longitudinal bar (9), the guardrail waist bar (16) and the guardrail upper horizontal bar (15) are connected by a number of guardrail uprights (112). The guardrail upright (112) includes an upper section (1122) and a lower section (1121). The upper section (1122) and the lower section (1121) are hinged by a first rotating hinge (221). The first rotating hinge (221) is located on the side of the guardrail upright (112) near the bottom of the tower crane standard section (1). The first rotating hinge (221) is located between the guardrail upper horizontal bar (15) and the guardrail waist bar (16). The tread longitudinal bar (9) is hinged to the bottom of the lower section (1121) of the guardrail upright (112) via a second rotating hinge (222). The second rotating hinge (222) is located on the side of the guardrail upright (112) away from the bottom of the tower crane standard section (1). The upper part of the lower section (1121) of the guardrail upright (112) is connected to the guardrail waist bar (16) via a first rotating shaft (119). The upper end of the guardrail upright (112) is hinged to the upper horizontal bar (15) of the guardrail via a third rotating hinge (223). The third rotating hinge (223) is located on the side of the guardrail upright (112) away from the bottom of the tower crane standard section (1). The guardrail waist bar (16) is located away from the bottom of the tower crane standard section (1). One end of the bottom of the tower crane standard section (1) is telescopic, which avoids the partial protrusion of the guardrail waist bar (16) causing difficulties in adding or removing tower crane sections through the tower crane standard section (1); the tower crane standard section (1) is provided with a U-shaped fixing part (6) with the opening facing downward. The U-shaped fixing part (6) is used to adapt to the upper horizontal bar (15) of the guardrail or the guardrail waist bar (16). The upper horizontal bar (15) of the guardrail and the guardrail waist bar (16) are fixedly connected to the opening of the corresponding U-shaped fixing part (6) by high-strength screws (61), which facilitates the upper horizontal bar (15) of the guardrail and the guardrail waist bar (16) to be flipped into the channel structure (2) for limiting and fixing, making installation and dismantling more convenient and use safer.

2. The tower crane floor passage structure according to claim 1, characterized in that, The cable (17) is connected to the tread crossbar (10) at one end of the passage structure (2) away from the bottom of the tower crane standard section (1), and the cable (17) is located between the guardrails on both sides.

3. The tower crane floor passageway structure according to any one of claims 1-2, characterized in that, The top of the tower crane standard section (1) is provided with a second rotating shaft (14), which is arranged laterally along the channel structure (2). The second rotating shaft (14) is driven by a motor (12), and one end of the cable (17) is wound around the second rotating shaft (14).

4. The tower crane floor passage structure according to claim 3, characterized in that, A limiting plate (11) is provided above the second rotating shaft (14); And / or, also includes a motor limiter (13) for limiting the axial movement of the motor (12) along the second rotation axis (14); And / or, also includes a control panel (19) for controlling the motor (12).

5. The tower crane floor passage structure according to claim 4, characterized in that, The top of the tower crane standard section (1) is provided with a fixing device, which is used to detachably fix the channel structure (2) that is flipped to the side of the tower crane standard section (1).

6. A method of using a tower crane floor access structure, characterized in that, Includes the following steps: S1. Install the tower crane floor passage structure according to any one of claims 1-5 at a specified height of the tower crane; S2. When the passage structure (2) is required, the passage structure (2) on the side of the tower crane standard section (1) is flipped to the horizontal by releasing the cable (17), and then the passage structure (2) is connected to the floor. S3. After the passage structure (2) is used up, disconnect the passage structure (2) from the floor and then flip the passage structure (2) to the side of the tower crane standard section (1) by retracting the cable (17).

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