Tower body supporting device and tower crane

Abstract

The utility model discloses a tower body support device and tower crane, wherein, tower body support device includes support base, support arm and tensioning mechanism, and support base is located on the installation base surface and is used for connecting with the tower body, support arm is located at the outside of tower body, and is equipped with the steering sheave on the support arm, and tensioning mechanism includes tensioning rope subassembly and tensioning oil cylinder, and the cylinder barrel of tensioning oil cylinder is fixed on the support base, and the first piston rod sets up to the up, and tensioning rope subassembly is around the steering sheave and both ends are all downward and stretch to the support base, and one end of tensioning rope subassembly is connected with the first piston rod, and the other end is connected on the support base, and the bending moment that the tower body receives can be passed to the foundation or base of installation base surface through support arm, tensioning rope subassembly and support base, thereby enhancing the carrying capacity of tower body, and compared with the prior art support structure, is more convenient for transportation and installation.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, specifically relating to a tower support device and a tower crane. Background Technology

[0002] Tower cranes, as large lifting equipment commonly used in construction, bear not only the vertical downward gravity of the working platform but also the combined effects of horizontal loads from the jib, bending moments generated by the slewing mechanism, and wind forces. The greater the height of the tower crane, the greater the dynamic load it bears. To increase the load-bearing capacity of tower cranes, attached support devices are generally installed on the tower to distribute and transfer the horizontal loads and bending moments borne by the tower. However, this attached support method relies on the building structure and is not suitable for independent operation or special working conditions without attachment.

[0003] To enable independent operation of tower cranes, existing technologies also use tie plates and telescopic drive components to transfer the bending moment of the tower body to the foundation, thereby increasing the load-bearing capacity of the tower crane. However, this structural form is difficult to install and transport, and has low efficiency. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this utility model provides a tower support device and a tower crane, which aims to solve the technical problems of the inconvenience of installation, dismantling and transportation of existing crane supports.

[0005] To achieve the above objectives, the first aspect of this utility model provides a tower support device, wherein the tower support device includes a support base, a support arm, and a tensioning mechanism; the support base is disposed on a mounting base and is used to connect with the tower body; the support arm is disposed on the outer side of the tower body, and a steering pulley is provided on the support arm; the tensioning mechanism includes a tension rope assembly and a tension cylinder, the cylinder of the tension cylinder is fixedly disposed on the support base, and the first piston rod is disposed upwards; the tension rope assembly is wound around the steering pulley and both ends extend downwards toward the support base; one end of the tension rope assembly is connected to the first piston rod, and the other end is connected to the support base.

[0006] In this embodiment of the utility model, the support base interval tensioning cylinder is also provided with a tensioning seat. The tensioning rope assembly includes a tensioning rope body, a first pull plate module and a second pull plate module. Both ends of the first pull plate module and the second pull plate module are respectively provided with wedge-shaped joints and first hinge holes. The tensioning rope body is wound around the steering pulley and both ends extend downward toward the support base. Both ends of the tensioning rope body are respectively inserted into the wedge-shaped joints of the first pull plate module and the second pull plate module for fixation. The first pull plate module is hinged to the first piston rod through a first hinge shaft passing through the first hinge hole. The second pull plate module is hinged to the tensioning seat through a second hinge shaft passing through the first hinge hole.

[0007] In this embodiment of the utility model, both the first pull plate module and the second pull plate module further include a first pull plate body and a second pull plate body. The lower end of the first pull plate body can be circumferentially rotated and installed on the upper end of the second pull plate body. The wedge-shaped joint can be laterally tilted and installed on the upper end of the first pull plate body. The lower end of the second pull plate body forms a first hinge hole.

[0008] In this embodiment of the utility model, both the first pull plate module and the second pull plate module further include a bearing component and a rotating shaft. The bearing component is disposed on the first pull plate body, and the rotating shaft passes through the bearing component and is connected to the second pull plate body. Furthermore, the rotating shaft has an abutting part at one end that extends from the bearing component away from the second pull plate body, and the abutting part abuts against the shaft ring of the bearing component.

[0009] In this embodiment of the utility model, the first pull plate body and the second pull plate body are respectively provided with a first limiting post and a second limiting post extending out in a one-to-one correspondence. The first pull plate module and the second pull plate module also include a limiting plate, and the limiting plate is provided with a first limiting hole and a second limiting hole for the first limiting post and the second limiting post to pass through in a one-to-one correspondence.

[0010] In this embodiment of the invention, the first hinge shaft is set as a force-measuring pin shaft, and the tower support device further includes a hydraulic control component. The hydraulic control component is communicatively connected to the force-measuring pin shaft and is used to control the extension and retraction of the first piston rod according to the measurement result of the force-measuring pin shaft.

[0011] In this embodiment of the invention, the tensioning seat and the tensioning cylinder are arranged sequentially at intervals along the direction away from the tower body, and the horizontal distance between the tensioning seat and the tower body is greater than the horizontal distance between the steering pulley and the tower body.

[0012] In this embodiment of the utility model, the tensioning cylinder is configured as a double piston rod cylinder. The first piston rod of the tensioning cylinder is connected to the tensioning rope assembly, and a locking nut is threaded onto the second piston rod of the tensioning cylinder. The locking nut is used to abut against the cylinder barrel of the tensioning cylinder to fix the second piston rod.

[0013] In this embodiment of the utility model, the support base includes a mounting frame for connecting the tower body and several legs disposed at the bottom of the mounting frame. The legs are fixedly disposed on the mounting base surface. The mounting frame and the mounting base surface are spaced apart to form an operating space. The cylinder is vertically disposed on the mounting frame. The first piston rod is disposed upward and the second piston rod extends downward into the operating space.

[0014] To achieve the above objectives, a second aspect of this utility model provides a tower crane, which includes a support standard section and the aforementioned tower support device, wherein a support arm is installed on each main chord of the support standard section.

[0015] Through the above technical solution, the tower support device provided by this utility model embodiment has the following beneficial effects: When using the aforementioned tower support device, the support base is placed on the mounting surface and used to connect with the tower body. The support arm extends outward from the tower body and is equipped with a steering pulley. The tensioning cylinder is fixedly mounted on the support base. The tensioning rope assembly is connected to the first piston rod of the tensioning cylinder facing upward and passes around the steering pulley to connect with the support base. In the initial state, the tensioning rope assembly is in a slack state. After the first piston rod of the tensioning cylinder retracts, the tensioning rope assembly remains tensioned. The bending moment on the tower body can be transmitted to the foundation or base forming the mounting surface through the support arm, the tensioning rope assembly, and the support base, thereby enhancing the load-bearing capacity of the tower body. Furthermore, during transportation, the tensioning rope assembly can be folded and placed at any length. During installation, the tensioning rope assembly can be directly unfolded and set around the steering pulley, which is more convenient for transportation and installation compared to existing support structures.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of a tower crane according to an embodiment of the present utility model; Figure 2 This is a structural schematic diagram of a support standard section according to an embodiment of the present invention; Figure 3 This is a structural schematic diagram of the support base according to one embodiment of the present utility model; Figure 4 This is a schematic diagram of the tensioning cylinder according to one embodiment of the present utility model; Figure 5 This is a side view of the first pull plate module according to an embodiment of the present utility model; Figure 6 yes Figure 5 The cross-sectional view of the first pull plate module shown; Figure 7 This is a structural schematic diagram of the support arm according to one embodiment of the present utility model.

[0018] Explanation of reference numerals in the attached figures Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] The tower support device of this utility model is described below with reference to the accompanying drawings.

[0021] like Figures 1 to 7 As shown, this utility model provides a tower support device and a tower crane, wherein the tower support device includes: A support base 100 is provided on the mounting base and is used to connect to the tower body; Support arm 200 is located on the outside of the tower body and is equipped with a steering pulley 260. The tensioning mechanism includes a tensioning rope assembly 300 and a tensioning cylinder 400. The cylinder 430 of the tensioning cylinder 400 is fixedly mounted on the support base 100, and the first piston rod 410 is arranged upward. The tensioning rope assembly 300 is wound around the steering pulley 260 and both ends extend downward toward the support base 100. One end of the tensioning rope assembly 300 is connected to the first piston rod 410, and the other end is connected to the support base 100.

[0022] When using the aforementioned tower support device, the support base 100 is placed on the mounting base and used to connect with the tower body. The support arm 200 extends outward from the tower body and is equipped with a guide pulley 260. The tensioning cylinder 400 is fixedly mounted on the support base 100. The tensioning rope assembly 300 is connected to the first piston rod 410 of the tensioning cylinder 400 facing upward, and passes around the guide pulley 260 to connect with the support base 100. In the initial state, the tensioning rope assembly 300 is in a slack state. When the first piston rod 410 of the tensioning cylinder 400 is activated... After the piston rod 410 retracts, the tension rope assembly 300 remains taut. The bending moment on the tower body can be transferred to the foundation or base forming the mounting surface through the support arm 200, the tension rope assembly 300, and the support base 100, thereby enhancing the load-bearing capacity of the tower body. Furthermore, during transportation, the tension rope assembly 300 can be folded to any length. During installation, it can be directly unfolded and positioned around the guide pulley 260, making it easier to transport and install compared to existing support structures. In addition, the pulley mechanism formed by the support base 100, the tension rope assembly 300, and the guide pulley 260 can directly transfer part of the bending moment on the tower body to the support base 100, thereby reducing the load on the tension cylinder 400 and improving the reliability and extending the service life of the device.

[0023] like Figure 2 and Figure 3As shown in this embodiment of the utility model, the support base 100 is further provided with a tensioning seat 140 at intervals between the tensioning cylinder 400 and the tensioning rope assembly 300. The tensioning rope assembly 300 includes a tensioning rope body 310, a first pull plate module 320 and a second pull plate module 330. Both ends of the first pull plate module 320 and the second pull plate module 330 are respectively provided with a wedge joint 321 and a first hinge hole. The tensioning rope body 310 is wound around the steering pulley 260 and both ends extend downward toward the support base 100. Both ends of the tensioning rope body 310 are respectively inserted into the wedge joints 321 of the first pull plate module 320 and the second pull plate module 330 for fixation. The first pull plate module 320 is hinged to the first piston rod 410 through a first hinge shaft 322 passing through the first hinge hole. The second pull plate module 330 is hinged to the tensioning seat 140 through a second hinge shaft passing through the first hinge hole. The wedge joint 321 serves to achieve a quick and stable connection between the tension rope body 310 and the tension plate module. By inserting the end of the tension rope body 310 into the wedge joint 321, the self-locking characteristic of the wedge structure automatically enhances the tightness of the connection when subjected to tension, effectively preventing slippage or loosening of the tension rope body 310 during operation. The first hinge hole allows the tension plate module to rotate freely, enabling it to adaptively adjust its angle according to the force direction of the tension rope assembly 300 and the extension and retraction of the tension cylinder 400. This avoids the stress concentration problem caused by the fixed force direction in traditional rigid connections. When the tension rope body 310 deviates in angle due to tower swaying or load changes, the tension plate module can adjust its posture in time by rotating around the hinge axis, ensuring that the tension force is always transmitted along the preset path, thus improving the dynamic stability and structural safety of the entire support system.

[0024] Specifically, the wedge joint 321 includes a wedge sleeve and a wedge core. The wedge sleeve is hollow, and its inner wall has a conical surface that matches the wedge core. The wedge core is a conical solid that can slide along the conical surface of the wedge sleeve. When installing the tension rope body 310, the end of the tension rope body 310 is first connected around the wedge core, and then the wedge core is inserted into the wedge sleeve to press the tension rope body 310. The lower end of the wedge sleeve has a second hinge hole, and it is hinged to the first pull plate body 324 of the pull plate module through a third pin passing through the second hinge hole.

[0025] Specifically, the tension rope body 310 is preferably a steel wire rope. In other embodiments, it can also be a pull plate chain link or a combination of a pull plate and a steel wire rope.

[0026] like Figure 5 and Figure 6As shown in this embodiment of the invention, both the first pull plate module 320 and the second pull plate module 330 further include a first pull plate body 324 and a second pull plate body 325. The lower end of the first pull plate body 324 is rotatably mounted on the upper end of the second pull plate body 325, and the wedge-shaped joint 321 is laterally swaying mounted on the upper end of the first pull plate body 324. The lower end of the second pull plate body 325 forms a first hinge hole. When connecting the tension rope assembly 300 to the first piston rod 410 or the tensioning seat 140, the second pull plate body 325 can be directly rotated to axially align the first hinge hole on the second pull plate body 325 with the hinge hole on the first piston rod 410 or the tensioning seat 140, without having to twist the tension rope body 310. This facilitates operation by the operator and avoids the tension rope body 310 from twisting and generating internal stress.

[0027] Understandably, after the tension rope body 310 is tensioned, the connection structure between the first pull plate body 324 and the second pull plate body 325 needs to withstand a large tensile force. Typical sliding and rotating connection structures (e.g., annular grooves and sliders) will generate significant friction due to the tensile force during rotation, leading to difficulty in rotation and wear. To avoid this problem, in this embodiment of the invention, both the first pull plate module 320 and the second pull plate module 330 further include a bearing component 323 and a rotating shaft 326. The bearing component 323 is disposed on the first pull plate body 324, and the rotating shaft 326 passes through the bearing component 323 and connects to the second pull plate body 325. The end of the rotating shaft 326 extending from the bearing component 323 away from the second pull plate body 325 has an abutment portion 327, which abuts against the shaft ring of the bearing component 323. By providing the bearing component 323, sliding friction can be converted into rolling friction, reducing frictional force.

[0028] Specifically, bearing component 323 can be configured as a thrust ball bearing or a thrust roller bearing.

[0029] Specifically, the first pull plate body 324 has a base plate and clamping plates on both sides of the base plate. The bearing component 323 is disposed on the base plate, and a washer is also provided between the bearing ring of the bearing component 323 and the abutment part 327. The rotating shaft 326 is configured as a bolt, and the nut of the bolt serves as the abutment part 327. The second pull plate body 325 has a top plate and clamping plates on both sides of the top plate. After the bolt is inserted into the second pull plate body 325, a connecting nut 328 is threadedly connected to it. The connecting nut 328 abuts and limits the position with the top plate.

[0030] like Figure 5As shown in this embodiment of the invention, the first pull plate body 324 and the second pull plate body 325 are respectively provided with a first limiting post and a second limiting post. Both the first pull plate module 320 and the second pull plate module 330 also include a limiting plate 329. The limiting plate 329 has a first limiting hole and a second limiting hole for the first limiting post and the second limiting post to pass through in a one-to-one correspondence. After removing the limiting plate 329, the second pull plate body 325 can rotate freely. When the limiting plate 329 is fitted onto the first limiting post and the second limiting post, the first limiting post and the second limiting post will abut against the hole walls of the first limiting hole and the second limiting hole, respectively, thereby restricting the rotation of the second pull plate body 325. This keeps the first pull plate body 324 and the second pull plate body 325 in a relatively fixed state, allowing the pull plate module to rotate flexibly when the angle needs to be adjusted, while reliably limiting movement during normal use, thus balancing ease of operation and stability of support. Specifically, the first or second limiting post has external threads and is fitted with bolts to prevent the limiting plate 329 from falling off.

[0031] In this embodiment of the invention, the first hinge shaft 322 is configured as a force-measuring pin. The tower support device also includes a hydraulic control component, which is communicatively connected to the force-measuring pin and used to control the extension and retraction of the first piston rod 410 based on the measurement results from the force-measuring pin. Through the combined design of the hydraulic control component and the force-measuring pin, precise control of the tension force is achieved; and the mechanical data collected in real time by the force-measuring pin can provide a basis for subsequent optimization of support parameters.

[0032] Specifically, the hydraulic control component is used to regulate the flow rate and pressure of the hydraulic oil entering the tensioning cylinder 400, thereby controlling the tension of the tensioning cylinder 400 on the tensioning rope body 310.

[0033] like Figure 1 and Figure 3 As shown in this embodiment of the invention, the tensioning seat 140 and the tensioning cylinder 400 are arranged sequentially at intervals along the direction away from the tower body, and the horizontal distance between the tensioning seat 140 and the tower body is greater than the horizontal distance between the steering pulley 260 and the tower body, so that the tensioning rope body 310 is inclined outward from top to bottom, so that the tension of the tensioning rope body 310 provides a horizontal constraint component force for the tower body. This horizontal constraint component force can effectively offset the horizontal overturning moment generated by the tower crane during operation due to load rotation, wind force, etc., thereby enhancing the anti-tilting stability of the tower body.

[0034] like Figure 4As shown in this embodiment of the present invention, the tensioning cylinder 400 is a double-piston rod cylinder. The first piston rod 410 of the tensioning cylinder 400 is connected to the tensioning rope assembly 300. A locking nut 440 is threaded onto the second piston rod 420 of the tensioning cylinder 400. The locking nut 440 is used to abut against the cylinder barrel 430 of the tensioning cylinder 400 to fix the second piston rod 420. By turning the locking nut 440, the position of the locking nut 440 on the second piston rod 420 can be steplessly adjusted. After the tensioning rope body 310 is tensioned, the locking nut 440 can be brought into contact with the cylinder barrel 430. The reaction force of the tensioning rope body 310 on the first piston rod 410 is transmitted to the locking nut 440 through the thread. The locking nut 440 acts on the cylinder barrel 430, and then the cylinder barrel 430 transmits the force to the support base 100. By tightening the lock nut 440, the first piston rod 410 and the second piston rod 420 can be mechanically locked. After locking, the hydraulic control component can control the tension cylinder 400 to release pressure.

[0035] like Figure 3 and Figure 4 As shown in this embodiment of the invention, the support base 100 includes a mounting frame 110 for connecting the tower body and several legs 120 located at the bottom of the mounting frame 110. The legs 120 are fixedly mounted on the mounting base surface. An operating space 130 is formed between the mounting frame 110 and the mounting base surface. A cylinder 430 is vertically mounted on the mounting frame 110, with the first piston rod 410 facing upwards and the second piston rod 420 extending downwards into the operating space 130. This arrangement of the operating space 130 facilitates the tightening of the locking nut 440 by the operator.

[0036] like Figure 7 As shown in this embodiment of the utility model, the support arm 200 includes an upper connecting beam 210, a lower connecting beam 220, reinforcing rods 230, and reinforcing plates 240. The upper connecting beam 210 and the lower connecting beam 220 are arranged at intervals from top to bottom and connected to the tower body. The reinforcing plates 240 are connected to the outer ends of the upper connecting beam 210 and the lower connecting beam 220. There are multiple reinforcing rods 230, which are arranged at intervals along the extension direction of the support arm 200 and connected to the upper connecting beam 210 and the lower connecting beam 220.

[0037] Specifically, the upper connecting beam 210 and the lower connecting beam 220 are made of I-beams. The support arm 200 also includes two connecting seats 250 located inside the main chord of the tower body. The upper connecting beam 210 and the lower connecting beam 220 form an opening channel for the main chord to pass through. The upper connecting beam 210 and the lower connecting beam 220 are connected by pins to the connecting seats 250 that are respectively spaced apart above and below.

[0038] like Figure 1As shown, to achieve the above objectives, the second aspect of this utility model provides a tower crane, which includes a support standard section 500 and the aforementioned tower support device. A support arm 200 is installed on each main chord of the support standard section 500. Since the tower crane adopts all the technical solutions of the above embodiments, it has at least the aforementioned beneficial effects, which will not be elaborated further here. Specifically, as... Figure 2 As shown, the support standard section 500 has four main chords, and the support arm 200 extends out diagonally along the main chords.

[0039] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tower support device, characterized in that, The tower support device includes: A support base (100) is provided on the mounting base and is used to connect to the tower body; Support arm (200), the support arm (200) is located on the outside of the tower body, and the support arm (200) is provided with a steering pulley (260). The tensioning mechanism includes a tensioning rope assembly (300) and a tensioning cylinder (400). The cylinder barrel (430) of the tensioning cylinder (400) is fixed on the support base (100), and the first piston rod (410) is arranged upward. The tensioning rope assembly (300) is wound around the steering pulley (260) and both ends extend downward toward the support base (100). One end of the tensioning rope assembly (300) is connected to the first piston rod (410), and the other end is connected to the support base (100).

2. The tower support device according to claim 1, characterized in that, The support base (100) is provided with a tensioning seat (140) at a distance from the tensioning cylinder (400). The tensioning rope assembly (300) includes a tensioning rope body (310), a first pull plate module (320), and a second pull plate module (330). Both ends of the first pull plate module (320) and the second pull plate module (330) are respectively provided with a wedge joint (321) and a first hinge hole. The tensioning rope body (310) is wound around the steering pulley (260) and both ends extend downwards. The two ends of the tension rope body (310) are respectively inserted into the wedge joints (321) of the first pull plate module (320) and the second pull plate module (330) to fix the support base (100). The first pull plate module (320) is hinged to the first piston rod (410) through the first hinge shaft (322) passing through the first hinge hole. The second pull plate module (330) is hinged to the tension seat (140) through the second hinge shaft passing through the first hinge hole.

3. The tower support device according to claim 2, characterized in that, Both the first pull plate module (320) and the second pull plate module (330) further include a first pull plate body (324) and a second pull plate body (325). The lower end of the first pull plate body (324) can be circumferentially rotated and installed on the upper end of the second pull plate body (325). The wedge joint (321) can be laterally tilted and installed on the upper end of the first pull plate body (324). The lower end of the second pull plate body (325) forms the first hinge hole.

4. The tower support device according to claim 3, characterized in that, Both the first pull plate module (320) and the second pull plate module (330) further include a bearing component (323) and a rotating shaft (326). The bearing component (323) is disposed on the first pull plate body (324). The rotating shaft (326) passes through the bearing component (323) and is connected to the second pull plate body (325). The rotating shaft (326) has an abutment portion (327) at one end extending from the bearing component (323) away from the second pull plate body (325). The abutment portion (327) abuts against the shaft ring of the bearing component (323).

5. The tower support device according to claim 3, characterized in that, The first pull plate body (324) and the second pull plate body (325) are respectively provided with a first limiting post and a second limiting post extending out one by one. The first pull plate module (320) and the second pull plate module (330) also include a limiting plate (329). The limiting plate (329) is provided with a first limiting hole and a second limiting hole for the first limiting post and the second limiting post to pass through one by one.

6. The tower support device according to claim 2, characterized in that, The first hinge shaft (322) is set as a force measuring pin shaft. The tower support device also includes a hydraulic control component. The hydraulic control component is communicatively connected to the force measuring pin shaft and is used to control the extension and retraction of the first piston rod (410) according to the measurement result of the force measuring pin shaft.

7. The tower support device according to claim 2, characterized in that, The tensioning seat (140) and the tensioning cylinder (400) are arranged sequentially at intervals along the direction away from the tower body, and the horizontal distance between the tensioning seat (140) and the tower body is greater than the horizontal distance between the steering pulley (260) and the tower body.

8. The tower support device according to any one of claims 1 to 7, characterized in that, The tensioning cylinder (400) is a double piston rod cylinder. A locking nut (440) is threaded onto the second piston rod (420) of the tensioning cylinder (400). The locking nut (440) is used to abut against the cylinder barrel (430) of the tensioning cylinder (400) to fix the second piston rod (420).

9. The tower support device according to claim 8, characterized in that, The support base (100) includes a mounting frame (110) for connecting the tower body and a plurality of legs (120) provided at the bottom of the mounting frame (110). The plurality of legs (120) are fixedly provided on the mounting base surface. The mounting frame (110) and the mounting base surface are spaced apart to form an operating space (130). The cylinder (430) is vertically provided on the mounting frame (110). The first piston rod (410) is provided facing upward, and the second piston rod (420) extends downward into the operating space (130).

10. A tower crane, characterized in that, The tower crane includes a support standard section (500) and a tower support device according to any one of claims 1 to 9, characterized in that the support arm (200) is installed on each main chord of the support standard section (500).

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