A standard section of a tower crane

Abstract

The application relates to a standard section of a tower crane and belongs to the technical field of hoisting equipment. The standard section comprises a standard section body which is composed of a plurality of vertical columns, horizontal web members, inclined web members and diagonal cross beams. The upper end and the lower end of the standard section body are respectively provided with diagonal cross beams and flanges for penetrating high-strength bolts. The diagonal cross beam and the flange at the upper end of the standard section body are an upper cross beam and an upper flange, and the diagonal cross beam and the flange at the lower end of the standard section body are a lower cross beam and a lower flange. An attaching mechanism is installed on the standard section body and located at the side of the standard section body. The attaching mechanism is used for connecting fixed objects on a construction site. A lock catch mechanism is used for connecting the lower cross beam of the upper standard section body with the upper cross beam of the lower standard section body when the upper and lower standard section bodies are stacked together. A anti-falling mechanism is installed on each vertical column and used for preventing the high-strength bolts from falling off from the standard section body after loosening.

Description

Technical Field

[0001] This invention belongs to the field of hoisting equipment technology, and specifically relates to a standard section of a tower crane. Background Technology

[0002] Currently, tower cranes are the most commonly used hoisting equipment on construction sites. They consist of a tower body, a boom, and other components. The tower body is made up of several standard sections stacked together. Adjacent standard sections are fixed together using high-strength bolts and nuts. Furthermore, the standard sections are equipped with attachment devices for connecting to fixed objects on site. This allows the tower body of the tower crane to be placed stably on the ground and to withstand the weight of the entire machine, the working load, and the wind load without tipping over.

[0003] While high-strength bolts and nuts can provide strong preload, the complexity of construction site environments and the frequent switching between high and low loads during tower crane operation cause slight vibrations in the tower crane's body during actual use. These vibrations can easily cause the bolts and nuts to loosen, resulting in a loss of stable fastening force and a risk of unstable connection between the upper and lower standard sections. Furthermore, loosened high-strength bolts may fall from a height. Therefore, the safety and stability of the tower crane's body in existing technology need further improvement during use. Summary of the Invention

[0004] This invention provides a standard section for tower cranes, which improves the safety and stability of tower crane operations.

[0005] This invention is achieved through the following technical solution: a standard section of a tower crane, comprising:

[0006] The standard section body is composed of several columns, horizontal web members, diagonal web members, and diagonal beams. The diagonal beams are provided at both the upper and lower ends of the standard section body, and flanges for high-strength bolts are also provided at both the upper and lower ends of the standard section body. The diagonal beam and flange located at the upper end of the standard section body are the upper beam and upper flange, and the diagonal beam and flange located at the lower end of the standard section body are the lower beam and lower flange.

[0007] An attachment mechanism is installed on the main body of the standard section and located on the side of the main body of the standard section. The attachment mechanism is used to connect to fixed objects at the construction site.

[0008] The locking mechanism connects the lower crossbeam of the upper standard section to the upper crossbeam of the lower standard section when the two standard sections are stacked together.

[0009] Anti-detachment mechanism: Each of the columns is equipped with an anti-detachment mechanism to prevent the high-strength bolts from falling off the main body of the standard section after they become loose.

[0010] Furthermore, to better realize the present invention, the attachment mechanism includes:

[0011] A connecting seat, one end of which is connected to the main body of the standard section, and the other end of which is provided with a first disc;

[0012] A connector is welded to a second disk, the second disk and the first disk are stacked and coaxial, and the second disk and the first disk are connected by a first rotating shaft to form a first rotating disk, so that the connector is rotatably connected to the connector seat;

[0013] A connecting arm, one end of which is connected to the connecting member, has a connecting hole on the connecting arm for connecting to fixed objects on the construction site through which a fixing bolt passes, and the connecting hole is located near the other end of the connecting arm.

[0014] Furthermore, in order to better realize the present invention, an outer protrusion is welded to the outer side wall of each of the two adjacent columns, and a horizontal round rod is fixed between the two outer protrusions, the axis of the horizontal round rod being perpendicular to the first rotating shaft;

[0015] The connecting seat has a through hole adapted to the horizontal round rod. The through hole is located near one end of the connecting seat, and the horizontal round rod is rotatably inserted into the through hole.

[0016] Furthermore, in order to better realize the present invention, the connector includes a round shaft and two fixing rods. The two ends of the round shaft are respectively welded and fixed to the second disk by the two fixing rods. The connector is located on the side away from the first disk. The connecting arm is provided with a through round hole adapted to the round shaft. The round shaft is rotatably inserted into the through round hole. The axial direction of the round shaft is perpendicular to the first rotating shaft.

[0017] Furthermore, to better realize the present invention, the locking mechanism includes:

[0018] The third disc has a first fixing block welded to one side of the disc surface. The first fixing block has a first notch adapted to the lower crossbeam at one end away from the third disc. The first fixing block is detachably and fixedly connected to a first sealing block, which is used to seal the opening of the first notch.

[0019] A fourth disk is stacked and coaxial with the third disk. The fourth disk and the third disk are connected by a second rotating shaft to form a second rotating disk. A second fixing block is welded to the fourth disk. The second fixing block is located on the side away from the third disk. A second notch adapted to the upper crossbeam is opened at the end of the second fixing block away from the fourth disk. Furthermore, a second sealing block is detachably and fixedly connected to the second fixing block. The second sealing block is used to seal the opening of the second notch.

[0020] When the upper and lower standard sections are stacked together, the lower crossbeam of the upper standard section passes through the first notch, and the upper crossbeam of the lower standard section passes through the second notch.

[0021] Furthermore, in order to better realize the present invention, the first sealing block is bolted to the first fixing block by the first locking bolt;

[0022] The second sealing block is bolted to the second fixing block by the second locking bolt.

[0023] Furthermore, in order to better realize the present invention, the first sealing block is rotatably connected to the first fixing block through a first rotating shaft, and the first rotating shaft and the first locking bolt are respectively located on both sides of the first notch;

[0024] The second sealing block is rotatably connected to the second fixing block via a second rotating shaft, and the second rotating shaft and the second locking bolt are located on both sides of the second notch, respectively.

[0025] 8. Furthermore, to better realize the present invention, the anti-detachment mechanism includes:

[0026] An L-shaped baffle plate has a hinge seat welded to the outer wall of the column. One end of the baffle plate is hinged to the hinge seat via a hinge shaft, the axis of which is vertical.

[0027] An unlocking assembly is installed on the outer wall of the column, and the unlocking assembly is used to lock the other end of the baffle plate to the column;

[0028] When the other end of the abutment plate is locked to the column, the abutment plate abuts against the underside of the high-strength bolt.

[0029] Furthermore, to better implement the present invention, the encryption / unlocking component includes:

[0030] The back plate is welded to the outer wall of the column. A top plate and a bottom plate are welded to the top and bottom of the back plate, respectively. The top plate, back plate and bottom plate form a "C" shaped structure. A through hole is opened on the bottom plate.

[0031] A locking pin is slidably inserted into the through hole. A force block is fixed at the top of the locking pin. The outer diameter of the force block is larger than the diameter of the through hole. A locking block that can extend downward into the through hole is provided at the bottom of the locking pin. The abutment plate has a locking hole that matches the locking block. When locked, the locking block is inserted into the locking hole.

[0032] A compression spring extends vertically, with its bottom end fixed to the top surface of the force block and its top end fixed to the bottom surface of the top plate.

[0033] Furthermore, in order to better realize the present invention, a limiting block is also welded on the outer side wall of the column. The limiting block is located below the abutment plate. When locked, the abutment plate overlaps the limiting block.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] The standard sections of the tower crane provided by this invention connect to fixed objects on the construction site through an attachment mechanism installed on the main body of the standard section. This makes the main body of the standard section more securely installed on the construction site. When multiple standard sections are stacked to form the tower body of the tower crane, two adjacent standard sections are not only bolted together with high-strength bolts, but also connected together by a locking mechanism. This gives the two adjacent standard sections a double locking effect. Specifically, the first layer of locking effect is provided by the high-strength bolts, and the second layer of locking effect is provided by the aforementioned locking mechanism. This makes the two adjacent standard sections more securely connected when stacked together. Even if a high-strength bolt becomes loose, the locking mechanism can still keep the two adjacent standard sections firmly connected. In addition, an anti-detachment mechanism is installed on the column of the standard section to prevent loose high-strength bolts from falling off the standard section and thus preventing high-strength bolts falling from a height from injuring workers.

[0036] Therefore, when the standard sections of the tower crane provided by this invention are assembled to form the tower body of the tower crane, its structural stability and safety in use are both higher. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1This is a schematic diagram of the structure of a standard section of a tower crane provided in an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the attachment mechanism in an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the locking mechanism in an embodiment of the present invention;

[0041] Figure 4 yes Figure 3 A cross-sectional view of the locking mechanism shown;

[0042] Figure 5 This is a schematic diagram of the anti-detachment mechanism in an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of the unlocking / unlocking component in an embodiment of the present invention.

[0044] In the picture:

[0045] 100 - Standard section body, 110 - Column, 120 - Horizontal web member, 130 - Diagonal web member, 140 - Diagonal beam, 150 - High-strength bolt, 200 - Attachment mechanism, 210 - Connecting seat, 220 - First disc, 230 - Connector, 231 - Round shaft, 232 - Fixing rod, 240 - Second disc, 250 - Connecting arm, 260 - Outer protrusion, 270 - Horizontal round rod, 300 - Locking mechanism, 310 - Third disc, 320 - First fixing block, 321 - First notch, 330 - First sealing block, 3 31-First locking bolt, 332-First rotating shaft, 340-Fourth disc, 350-Second fixing block, 351-Second notch, 360-Second sealing block, 361-Second locking bolt, 362-Second rotating shaft, 400-Anti-detachment mechanism, 410-Blocking plate, 420-Hinge seat, 430-Hinge shaft, 440-Unlocking assembly, 441-Back plate, 442-Top plate, 443-Bottom plate, 444-Locking post, 4441-Force block, 4442-Locking block, 445-Compression spring, 450-Limiting block. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0047] Example:

[0048] like Figures 1-6As shown, this embodiment provides a standard section of a tower crane, including a standard section body 100, an attachment mechanism 200, a locking mechanism 300, and an anti-detachment mechanism 400, wherein:

[0049] The standard section body 100 consists of columns 110, horizontal web members 120, diagonal web members 130, and diagonal beams 140. Specifically, this standard section body 100 is the same as the standard section that makes up the tower body of an existing tower crane. In fact, there are four columns 110, which are distributed at the four vertices of the same rectangle. Horizontal web members 120 and diagonal web members 130 are welded between adjacent columns 110, and diagonal beams 140 are welded between the two diagonally opposite columns 110 of the rectangle. As with the prior art, the standard section body 100 has diagonal beams 140 at both the upper and lower ends, and flanges for high-strength bolts 150 (illustrated using perforated columns in the figure) are also provided at both the upper and lower ends of the standard section. By definition, the diagonal beam 140 and flange located at the upper end of the standard section body 100 are the upper beam and upper flange, and the diagonal beam 140 and flange located at the lower end of the standard section body 100 are the lower beam and lower flange.

[0050] The attachment mechanism 200 is installed on the standard section body 100 and located on the side of the standard section body 100. The attachment mechanism 200 is used to connect to fixed objects at the construction site, specifically, fixed structures such as walls. Using this attachment mechanism 200, the standard section body 100 can be installed more stably at the construction site, and the anti-tipping effect is better.

[0051] In actual use, multiple standard section bodies 100 are stacked vertically and their corresponding flanges are locked together using high-strength bolts 150. When two standard section bodies 100 are stacked together, the lower crossbeam of the upper standard section body 100 is connected to the upper crossbeam of the lower standard section body 100 via a locking mechanism 300. Thus, two adjacent standard section bodies 100 are not only bolted together by high-strength bolts 150, but also have their diagonal crossbeams 140 connected by the locking mechanism 300, providing a double locking effect. Specifically, the first layer of locking is provided by the high-strength bolts 150, and the second layer by the locking mechanism 300. This ensures a more secure connection when two adjacent standard section bodies 100 are stacked together, and even if one of the high-strength bolts 150 becomes loose, the locking mechanism 300 can still firmly connect the two adjacent standard section bodies 100.

[0052] Each column 110 is equipped with an anti-detachment mechanism 400, which prevents the high-strength bolts 150 from falling off the standard section body 100 after becoming loose. In fact, the flanges of the standard section body 100 are connected together by several high-strength bolts 150. Each column 110 is equipped with an anti-detachment mechanism 400, and these multiple anti-detachment mechanisms 400 can prevent all or most of the high-strength bolts 150 connecting two adjacent standard section bodies 100 from falling off the standard section body 100 after becoming loose. Thus, even if a single high-strength bolt 150 becomes loose, it will not fall off the standard section body 100, thereby preventing high-strength bolts 150 falling from a height and injuring workers.

[0053] With the above structure, when the standard sections of the tower crane provided in this embodiment are assembled to form the tower body, its structural stability and operational safety are both higher.

[0054] An optional implementation of this embodiment is as follows: The attachment mechanism 200 includes a connecting seat 210, a connecting member 230, and a connecting arm 250, wherein:

[0055] One end of the connecting seat 210 is connected to the standard section body 100, and the other end of the connecting seat 210 is provided with a first disc 220. Specifically, an outer protrusion 260 is welded to the outer wall of each of the two adjacent columns 110, and a horizontal round rod 270 is welded or snapped between the two outer protrusions 260. A through hole adapted to the horizontal round rod 270 is opened on the connecting seat 210. The through hole is located near one end of the connecting seat 210, and the horizontal round rod 270 is rotatably inserted into the through hole. In this way, the connecting seat 210 can rotate relative to the standard section body 100.

[0056] The connector 230 is welded to the second disk 240. The second disk 240 and the first disk 220 are stacked and coaxial. The second disk 240 and the first disk 220 are connected by a first rotating shaft to form a first rotating disk (it is worth noting that the first rotating disk can be an existing rotating disk mechanism) so that the connector 230 is rotatably connected to the connecting seat 210. The axial direction of the first rotating shaft is perpendicular to the axial direction of the aforementioned horizontal round rod 270.

[0057] One end of the connecting arm 250 is connected to the connector 230. The connecting arm 250 has a connecting hole for connecting to a fixed object on the construction site through which a fixing bolt passes. The connecting hole is located near the other end of the connecting arm 250. In specific use, the bolt holes of the fixed object on the construction site (such as a wall or concrete frame column) are aligned so that the connecting hole is aligned with the bolt hole. Then, a fastening bolt (with a spring washer and a flat washer) is inserted and tightened with a torque wrench. Optionally, the connector 230 includes a round shaft 231 and two fixing rods 232. The two ends of the round shaft 231 are respectively welded and fixed to the second disc 240 through the two fixing rods 232. The connector 230 is located on the side away from the first disc 220. The connecting arm 250 has a through round hole that matches the round shaft 231. The round shaft 231 is rotatably inserted into the through round hole, and the axial direction of the round shaft 231 is perpendicular to the first rotating shaft.

[0058] With the above structure, the connecting arm 250 can rotate relative to the connecting member 230, the connecting member 230 can rotate relative to the connecting seat 210, the connecting seat 210 can rotate relative to the standard section body 100, and the connecting seat 210 can also slide on the horizontal round rod 270. This gives the connecting arm 250 a higher degree of freedom, making it easier for the connecting holes on the connecting arm 250 to align with the pre-drilled bolt holes of the fixing object. This makes it easier for the connecting arm 250 to be connected to the fixing object on the construction site, and provides greater installation flexibility.

[0059] Of course, as another optional implementation of this embodiment, the attachment mechanism 200 described above can also be a high-strength connecting rope (such as a steel wire rope) that is bound to the column 110, with a hanging plate set at the free end of the connecting rope, and the hanging plate is connected to the pre-reserved bolt holes of the fixed object at the construction site through connecting bolts.

[0060] An optional implementation of this embodiment is as follows: The locking mechanism 300 includes a third disc 310 and a fourth disc 340, wherein:

[0061] A first fixing block 320 is welded to one side of the third disc 310. The first fixing block 320 has a first notch 321 at its end opposite to the third disc 310, which matches the lower crossbeam. A first sealing block 330 is detachably and fixedly connected to the first fixing block 320, and the first sealing block 330 is used to seal the opening of the first notch 321. Optionally, the first sealing block 330 is bolted to the first fixing block 320 by a first locking bolt 331.

[0062] The fourth disk 340 and the third disk 310 are stacked and coaxial. The fourth disk 340 and the third disk 310 are connected by a second rotating shaft to form a second rotating disk (this second rotating disk can also be a turntable in the prior art). A second fixing block 350 is welded to the fourth disk 340. The second fixing block 350 is located on the side opposite to the third disk 310. The end of the second fixing block 350 opposite to the fourth disk 340 has a second notch 351 adapted to the upper crossbeam. Furthermore, a second sealing block 360 is detachably and fixedly connected to the second fixing block 350. The second sealing block 360 is used to seal the opening of the second notch 351. Optionally, the second sealing block 360 is bolted to the second fixing block 350 by a second bolt. Of course, the second rotating disk can also be replaced by a fixed seat, that is, the first fixing block 320 and the second fixing block 350 are welded to both ends of the fixed seat respectively.

[0063] When the upper and lower standard sections 100 are stacked together, the lower crossbeam of the upper standard section passes through the first notch 321, and the upper crossbeam of the lower standard section passes through the second notch 351. During installation, the first sealing block 330 opens the first notch 321, and the second sealing block 360 opens the second notch 351. After the lower crossbeam of the upper standard section is inserted into the first notch 321, the first sealing block 330 seals the opening of the first notch 321. Similarly, after the upper crossbeam of the lower standard section is inserted into the second notch 351, the second sealing block 360 seals the opening of the second notch 351.

[0064] More preferably, the first sealing block 330 is rotatably connected to the first fixing block 320 via a first rotating shaft 332, with the first rotating shaft 332 and the first locking bolt 331 located on opposite sides of the first notch 321; the second sealing block 360 is rotatably connected to the second fixing block 350 via a second rotating shaft 362, with the second rotating shaft 362 and the second locking bolt 361 located on opposite sides of the second notch 351. Thus, when the first locking bolt 331 is loosened, the first fixing block 320 can be rotated, thereby opening the first notch 321; when the second locking bolt 361 is loosened, the second fixing block 350 can be rotated, thereby opening the second notch 351.

[0065] Additionally, a shoulder can be provided on the diagonal beam 140 for axial positioning of the locking mechanism 300. Furthermore, an upper connecting rod can be externally connected to the first fixing block 320 to connect the diagonal web member 130 of the upper standard section body 100, and / or a lower connecting rod can be externally connected to the second fixing block 350 to connect the diagonal web member 130 of the lower standard section body 100.

[0066] An optional implementation of this embodiment is as follows: The anti-detachment mechanism 400 includes a baffle plate 410 and an unlocking / unlocking component 440, wherein:

[0067] The baffle plate 410 is L-shaped, and a hinge seat 420 (which includes two lugs, one above the other, and each lug having a hinge hole) is welded to the outer wall of the column 110. One end of the baffle plate 410 is hinged to the hinge seat 420 via a hinge shaft 430. The axis of the hinge shaft 430 is in the up-down direction, so the baffle plate 410 can rotate in the horizontal direction.

[0068] The locking / unlocking assembly 440 is installed on the outer wall of the column 110. The locking / unlocking assembly 440 is used to lock the other end of the abutment plate 410 to the column 110. When the other end of the abutment plate 410 is locked to the column 110, the abutment plate 410 abuts against the underside of the high-strength bolt 150. In this way, the abutment plate 410 physically blocks the high-strength bolt 150, so even if the high-strength bolt 150 loosens, it will not fall off the standard section body 100.

[0069] Optionally, the above-mentioned unlocking mechanism includes a back plate 441, a locking pin 444, and a compression spring 445, wherein:

[0070] The back plate 441 is welded to the outer wall of the column 110. A top plate 442 and a bottom plate 443 are welded to the top and bottom of the back plate 441, respectively. The top plate 442, the back plate 441 and the bottom plate 443 form a "C" shaped structure. A through hole extending vertically is opened on the bottom plate 443.

[0071] The locking pin 444 is slidably inserted into the through hole. The top of the locking pin 444 is fixed with a force block 4441. The outer diameter of the force block 4441 is larger than the diameter of the through hole. The bottom of the locking pin 444 is provided with a locking block 4442 that can extend downward into the through hole. The baffle plate 410 has a locking hole that matches the locking block 4442. When locked, the locking block 4442 is inserted into the locking hole.

[0072] A compression spring 445 extends vertically, with its bottom end fixed to the top surface of the force-bearing block 4441 and its top end fixed to the bottom surface of the top plate 442. Alternatively, positioning posts can be provided on both the bottom surface of the top plate 442 and the top surface of the force-bearing block 4441, with the compression spring 445 inserted into the positioning posts.

[0073] In this way, when it is not necessary to resist the high-strength bolt 150, the worker applies an upward force to the force block 4441, causing the force block 4441 to move the locking pin 444 upward, thereby causing the locking block 4442 to be pulled out of the lock hole. At this time, the worker can rotate the baffle plate 410 in the opposite direction, so that the baffle plate 410 is moved away from the position resisting the high-strength bolt 150. When it is necessary to block the high-strength bolt 150, the operator rotates the stop plate 410 in the forward direction. The locking block 4442 is provided with a guide slope. When the stop plate 410 rotates to contact the locking block 4442, it is actually the stop plate 410 contacting the guide slope. Using the guide slope, the rotating stop plate 410 will push the locking pin 444 upward so that the stop plate 410 moves to the position to block the high-strength bolt 150. When the stop plate 410 completely blocks the high-strength bolt 150 from below, the locking block 4442 is placed above the lock hole. Under the action of the compression spring 445, the locking block 4442 automatically falls into the lock hole to achieve locking.

[0074] More preferably, a limiting block 450 is welded to the outer wall of the column 110. The limiting block 450 is located below the abutment plate 410. When locked, the abutment plate 410 overlaps the limiting block 450. In fact, the limiting block 450 and the base plate 443 form a sandwich. When the abutment plate 410 abuts against the high-strength bolt 150, the abutment plate 410 is in the sandwich, and the top surface of the abutment plate 410 is in contact with the base plate 443, and the bottom surface of the abutment plate 410 is in contact with the limiting block 450.

[0075] Of course, the aforementioned anti-detachment mechanism 400 can also be a protective cover that is glued and fixed to the outside of the aforementioned column 110 with high-strength adhesive. A protective cover is glued to the outside of the nut and corresponding screw of each high-strength bolt 150 to cover it.

[0076] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A standard section of a tower crane, characterized in that, include: The standard section body (100) is composed of several columns (110), horizontal web members (120), diagonal web members (130), and diagonal beams (140). The diagonal beams (140) are provided at both the upper and lower ends of the standard section body (100). The upper and lower ends of the standard section are also provided with flanges for passing high-strength bolts (150). The diagonal beams (140) and the flanges at the upper end of the standard section body (100) are the upper beam and the upper flange, and the diagonal beams (140) and the flanges at the lower end of the standard section body (100) are the lower beam and the lower flange. An attachment mechanism (200) is installed on the standard section body (100) and located on the side of the standard section body (100). The attachment mechanism (200) is used to connect to the fixed objects at the construction site. The locking mechanism (300) connects the lower crossbeam of the upper standard section body (100) to the upper crossbeam of the lower standard section body (100) when the upper and lower standard section bodies (100) are stacked together. Anti-detachment mechanism (400) is installed on each of the columns (110). The anti-detachment mechanism (400) is used to prevent the high-strength bolts (150) from falling off the standard section body (100) after they become loose.

2. The standard section of the tower crane according to claim 1, characterized in that, The attachment mechanism (200) includes: A connecting seat (210) is connected at one end to the standard section body (100), and a first disk (220) is provided at the other end of the connecting seat (210); A connector (230) is welded to a second disk (240). The second disk (240) and the first disk (220) are stacked and coaxial. The second disk (240) and the first disk (220) are connected by a first rotating shaft to form a first rotating disk, so that the connector (230) is rotatably connected to the connector (210). A connecting arm (250) is connected at one end to the connecting member (230). The connecting arm (250) has a connecting hole for connecting a fixed object at the construction site through a fixing bolt. The connecting hole is located near the other end of the connecting arm (250).

3. The standard section of the tower crane according to claim 2, characterized in that: An external protrusion (260) is welded to the outer side wall of each of the two adjacent columns (110), and a horizontal round rod (270) is fixed between the two external protrusions (260). The axial direction of the horizontal round rod (270) is perpendicular to the first rotating shaft. The connecting seat (210) has a through hole that is adapted to the horizontal rod (270). The through hole is located at one end near the connecting seat (210), and the horizontal rod (270) is rotatably inserted into the through hole.

4. The standard section of the tower crane according to claim 2, characterized in that: The connector (230) includes a round shaft (231) and two fixing rods (232). The two ends of the round shaft (231) are respectively welded and fixed to the second disk (240) by the two fixing rods (232). The connector (230) is located on the side away from the first disk (220). The connecting arm (250) has a through hole adapted to the round shaft (231). The round shaft (231) is rotatably inserted into the through hole. The axial direction of the round shaft (231) is perpendicular to the first rotating shaft.

5. The standard section of the tower crane according to claim 1, characterized in that, The locking mechanism (300) includes: The third disc (310) has a first fixing block (320) welded on one side of the disc surface. The first fixing block (320) has a first notch (321) adapted to the lower crossbeam at one end away from the third disc (310). The first fixing block (320) is detachably and fixedly connected to a first sealing block (330), which is used to seal the opening of the first notch (321). A fourth disk (340) is stacked and coaxial with the third disk (310). The fourth disk (340) and the third disk (310) are connected by a second rotating shaft to form a second rotating disk. A second fixing block (350) is welded to the fourth disk (340). The second fixing block (350) is located on the side away from the third disk (310). A second notch (351) adapted to the upper crossbeam is opened at the end of the second fixing block (350) away from the fourth disk (340). Furthermore, a second sealing block (360) is detachably and fixedly connected to the second fixing block (350). The second sealing block (360) is used to seal the opening of the second notch (351). When the upper and lower standard sections (100) are stacked together, the lower crossbeam of the upper standard section passes through the first notch (321), and the upper crossbeam of the lower standard section passes through the second notch (351).

6. The standard section of the tower crane according to claim 5, characterized in that: The first sealing block (330) is bolted to the first fixing block (320) by the first locking bolt (331); The second sealing block (360) is bolted to the second fixing block (350) by the second locking bolt (361).

7. The standard section of the tower crane according to claim 5, characterized in that: The first sealing block (330) is rotatably connected to the first fixing block (320) via the first rotating shaft (332), and the first rotating shaft (332) and the first locking bolt (331) are located on both sides of the first notch (321); The second sealing block (360) is rotatably connected to the second fixing block (350) via the second rotating shaft (362), and the second rotating shaft (362) and the second locking bolt (361) are located on both sides of the second notch (351).

8. The standard section of the tower crane according to claim 1, characterized in that, The anti-detachment mechanism (400) includes: An "L"-shaped baffle plate (410) is provided. A hinge seat (420) is welded to the outer wall of the column (110). One end of the baffle plate (410) is hinged to the hinge seat (420) via a hinge shaft (430). The axial direction of the hinge shaft (430) is up and down. An unlocking assembly (440) is installed on the outer side wall of the column (110), and the unlocking assembly (440) is used to lock the other end of the baffle (410) to the column (110); When the other end of the abutment plate (410) is locked to the column (110), the abutment plate (410) abuts against the underside of the high-strength bolt (150).

9. The standard section of the tower crane according to claim 8, characterized in that, The encryption / unlocking component (440) includes: A back plate (441) is welded to the outer wall of the column (110). A top plate (442) and a bottom plate (443) are welded to the top and bottom of the back plate (441) respectively. The top plate (442), the back plate (441) and the bottom plate (443) form a "C" shaped structure. A through hole is provided on the bottom plate (443). A locking pin (444) is slidably inserted into the through hole. A force block (4441) is fixed at the top of the locking pin (444). The outer diameter of the force block (4441) is larger than the diameter of the through hole. A locking block (4442) is provided at the bottom of the locking pin (444) and can extend downward into the through hole. The baffle plate (410) has a locking hole adapted to the locking block (4442). When locked, the locking block (4442) is inserted into the locking hole. A compression spring (445) extends vertically, with its bottom end fixed to the top surface of the force block (4441) and its top end fixed to the bottom surface of the top plate (442).

10. The standard section of the tower crane according to claim 9, characterized in that: A limiting block (450) is also welded to the outer wall of the column (110). The limiting block (450) is located below the abutment plate (410). When locked, the abutment plate (410) overlaps the limiting block (450).

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