Climbing system for tower crane and tower crane

Abstract

The present invention discloses a climbing device for a tower crane, a climbing system for a tower crane, and a tower crane. The climbing system for a tower crane includes a step group and a climbing device. The step group includes two steps respectively arranged on the web member sides of two adjacent tower body main chords of a tower body standard section and extending towards each other. The climbing device includes a climbing frame, a hanging frame, and a jacking oil cylinder jacked between the hanging frame and the climbing frame. Two hanging plates are respectively arranged at both ends of the hanging frame, and the two hanging plates are respectively and correspondingly hung on the two steps of the step group. Then, during the process of the jacking oil cylinder jacking the climbing frame, since the steps of the step group are arranged on the web member sides of the tower body main chords, hanging plates that can be stably hung on the steps can be arranged on the hanging frame, so that the hanging frame can stably support the jacking oil cylinder and the climbing frame above the jacking oil cylinder, and prevent the climbing frame from significantly shaking during the jacking operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of lifting equipment, and particularly relates to a climbing system for a tower crane and a tower crane. Background Art

[0002] The climbing device is an important component during the mast adding process of a tower crane. Currently, the main chords of the standard sections of tower cranes mainly adopt square steel tubes or angle steels. The steps of the climbing device are generally arranged on the outer side of the main chords of the standard sections, that is, the steps are located on the outer side of the entire standard section and between the entire standard section and the climbing frame. At the same time, during the jacking operation of the climbing frame, generally, the steps support the jacking crossbeam of the climbing device. This layout form of the climbing device makes the climbing frame relatively large, and the climbing frame is prone to shaking during the jacking operation, making it difficult to ensure stability. Summary of the Invention

[0003] Aiming at the above defects or deficiencies, the present invention provides a climbing system for a tower crane and a tower crane, aiming to solve the technical problem that the existing layout form of the climbing device makes the climbing frame prone to shaking during the jacking operation.

[0004] To achieve the above object, the present invention provides a climbing system for a tower crane. The climbing system for a tower crane includes a step group and a climbing device. The step group includes two steps respectively arranged on the web member sides of two adjacent tower main chords of the tower standard section and extending towards each other. The climbing device includes a climbing frame, a hanging frame, and a jacking oil cylinder supported between the hanging frame and the climbing frame. Two hanging plates are respectively provided at both ends of the hanging frame, and the two hanging plates are respectively and correspondingly hung on the two steps of the step group.

[0005] In an embodiment of the present invention, the hanging frame includes a connecting plate connected to the jacking oil cylinder. The two hanging plates are respectively arranged at the left and right ends of the connecting plate. The hanging plate includes a main board portion provided at the end of the connecting plate and a hanging portion bent and extended upward from the upper end of the main board portion. A hanging opening is formed at the lower end of the hanging portion.

[0006] In an embodiment of the present invention, the hanging frame further includes a butting plate provided on the main board portion and below the hanging portion. A first butting surface for butting against the circumferential side of the tower main chord is formed at the free end of the butting plate.

[0007] In an embodiment of the present invention, the climbing device further includes a step-changing frame movably hinged to the climbing frame. Two clamping openings are formed on the step-changing frame for the step-changing frame to be clamped on the two steps of the corresponding step group. A second butting surface for butting against the circumferential side of the climbing main chord of the climbing frame is further formed on the step-changing frame.

[0008] In an embodiment of the present invention, the step-changing frame includes a cross beam and two support arms arranged at intervals. The upper ends of the two support arms are respectively hinged to the climbing frame movably, and the lower ends of the two support arms respectively form clamping openings. The cross beam includes an intermediate connecting portion connecting the two support arms and two support portions respectively arranged at both ends of the intermediate connecting portion. The support portions are provided with abutting blocks forming a second abutting surface.

[0009] In an embodiment of the present invention, the support arm includes a first rod portion, a second rod portion and a third rod portion. The first rod portion is arranged vertically and forms a clamping opening at the lower end. The second rod portion is connected to the upper end of the first rod portion and is arranged obliquely. The third rod portion is arranged on the first rod portion or the second rod portion and extends in the inclined direction of the second rod portion. The end of the second rod portion far from the first rod portion is hinged to the climbing frame movably. The cross beam is respectively connected to the free ends of the third rod portions of the two support arms, and the abutting blocks are arranged on the same side as the support arms.

[0010] In an embodiment of the present invention, the climbing frame is provided with diagonal web members arranged in a V shape above the jacking oil cylinder.

[0011] In an embodiment of the present invention, the climbing frame is provided with a first roller and a second roller. The roller axes of the first roller and the second roller located at the same corner of the climbing frame are arranged vertically and respectively abut against the adjacent two sides of the same main chord of the tower body.

[0012] In an embodiment of the present invention, the first roller is arranged to face the connecting pin shaft of the main chord of the tower body, and the roller body of the first roller is formed with a receiving space corresponding to the connecting pin shaft.

[0013] To achieve the above object, the present invention further provides a tower crane, wherein the tower crane includes the climbing system for the tower crane as described above.

[0014] By the above technical solutions, the climbing system for the tower crane provided by the embodiments of the present invention has the following beneficial effects:

[0015] When using the above-mentioned climbing system, the two steps of the step group are respectively arranged on the web member sides of two adjacent tower body main chords of the tower body standard section. The two ends of the hanging bracket of the climbing device are respectively provided with two hanging plates, and the two hanging plates can be respectively hung on the two steps in a one-to-one correspondence. That is, during the process of the lifting cylinder jacking up the climbing frame, since the steps of the step group are arranged on the web member sides of the tower body main chords, hanging plates that can be stably hung on the steps can be arranged on the hanging bracket. And the hanging of the hanging plate on the step, compared with the existing technology where the step supports the jacking cross beam, undoubtedly enables the hanging bracket to stably support the lifting cylinder and the climbing frame on the lifting cylinder, avoiding the phenomenon of obvious shaking of the climbing frame during the jacking operation. At the same time, compared with the existing technology where the step is arranged on the outer side of the main chord of the standard section, the step in the present invention is arranged on the web member side of the tower body main chord of the standard section, which can also play a role in reducing the size of the climbing frame.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide an understanding of the present invention and form a part of the specification. Together with the following specific implementation, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0018] Figure 1 is a schematic structural diagram of the jacking operation of the climbing device according to an embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of the step-changing operation of the climbing device according to an embodiment of the present invention;

[0020] Figure 3 is Figure 2 an enlarged structural diagram of part A in

[0021] Figure 4 is a schematic structural diagram of the hanging bracket according to an embodiment of the present invention;

[0022] Figure 5 is a schematic structural diagram of the step-changing frame according to an embodiment of the present invention;

[0023] Figure 6 is a schematic structural diagram of the roller of the climbing device and the standard section according to an embodiment of the present invention;

[0024] Figure 7 is Figure 6 an enlarged structural diagram of part B in

[0025] DESCRIPTION OF THE REFERENCE NUMERALS

[0026] 1 Standard section 11 Main chord of tower body

[0027] 12 Connecting pin shaft 2 Step

[0028] 21 Hanging groove 3 Hanging frame

[0029] 31 Connecting plate 32 Hanging plate

[0030] 321 Main board part 322 Hanging part

[0031] 323 Stopping part 324 Hanging opening

[0032] 33 Contact plate 331 First contact surface

[0033] 4 Step-changing frame 41 Support arm

[0034] 411 First rod part 412 Second rod part

[0035] 413 Third rod part 414 Clamping opening

[0036] 42 Cross beam

[0037] 421 Intermediate connecting part 422 Support part

[0038] 43 Contact block 431 Second contact surface

[0039] 5 Jacking oil cylinder 6 Climbing frame

[0040] 61 Main chord of climbing 62 Diagonal web member

[0041] 621 Horizontal web member 63 First roller

[0042] 631 Accommodating space 64 Second roller Detailed implementation manners

[0043] The following describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and understanding the present invention, and are not used to limit the present invention.

[0044] The climbing system for tower crane of the present invention will be described below with reference to the accompanying drawings.

[0045] As Figure 1 and Figure 4 shown, the present invention provides a climbing system for tower crane, wherein the climbing system for tower crane includes:

[0046] Step group, including two steps 2 respectively arranged on the web member sides of two adjacent main chords 11 of the tower body standard section 1 and extending towards each other;

[0047] Climbing device, including a climbing frame 6, a hanging frame 3, and a jacking oil cylinder 5 jacking between the hanging frame 3 and the climbing frame 6. Two hanging plates 32 are respectively arranged at both ends of the hanging frame 3, and the two hanging plates 32 are respectively and correspondingly hung on two steps 2 of the step group.

[0048] When using the above climbing device, the two steps 2 of the step group are respectively arranged on the web side of two adjacent tower body main chords 11 of the tower body standard section 1. Two hanging plates 32 are respectively arranged at both ends of the hanging frame 3 of the climbing device, and the two hanging plates 32 can be correspondingly hung on the two steps 2. That is, during the process of the jacking oil cylinder 5 jacking the climbing frame 6, since the steps 2 of the step group are arranged on the web side of the tower body main chord 11, a hanging plate 32 that can be stably connected to the step 2 can be arranged on the hanging frame 3. The hanging of the hanging plate 32 on the step 2 can undoubtedly enable the hanging frame 3 to stably support the jacking oil cylinder 5 and the climbing frame 6 on the jacking oil cylinder 5, avoiding the phenomenon of obvious shaking of the climbing frame 6 during the jacking operation. At the same time, compared with the prior art in which the step 2 is arranged on the outer side of the main chord of the standard section 1, the step 2 in the present invention is arranged on the web side of the tower body main chord 11 of the standard section 1, which can also play a role in reducing the size of the climbing frame 6. It should be particularly noted that the climbing device provided by the present invention is particularly suitable for tower cranes with the tower body main chord 11 of the standard section 1 being a round tube. Of course, if a tower crane with a tower body main chord 11 of other structural forms uses the climbing device in the present invention, it should also fall within the protection scope of the present invention.

[0049] Specifically, referring to Figures 1 to 3 , the web side of the tower body main chord 11 refers to the side of the tower body main chord 11 where the standard section web member is arranged, that is, the step 2 and the standard section web member are arranged on the tower body main chord 11 on the same side, and the free end of the step 2 extends towards another adjacent tower body main chord 11, so that a plane for hanging the hanging frame 3 is formed at the upper end of the step 2. In addition, a hanging groove 21 can also be opened on the upper end surface of the step 2.

[0050] Please refer to again Figure 1 and Figure 4In the embodiment of the present invention, the hanger 3 includes a connecting plate 31 connected to the jacking cylinder 5, two mounting plates 32 are respectively arranged at the left and right ends of the connecting plate 31, and the mounting plate 32 includes a main plate portion 321 arranged at the end of the connecting plate 31 and a mounting portion 322 bent and extended from the upper end of the main plate portion 321, and a mounting opening 324 is formed at the lower end of the mounting portion 322. That is, the mounting portion 322 extends out of the connecting plate 31 and can partially extend into the space surrounded by the main chord 11 of the tower body of the standard section 1. When the lower end of the mounting portion 322 abuts against the upper end surface of the step 2, the hanger 3 can be reliably mounted on the step 2. Specifically, the hanging portion 322 is bent and extended from the upper end of the main plate portion 321, and the entire hanging plate 32 is arranged in a "7" shape. The hanging plates 32 at both ends of the hanging rack 3 are arranged in a "7" shape to ensure that the hanging rack 3 is stably hung on the two steps 2 of the step group. At the same time, a stopper 323 is formed at one end of the hanging portion 322 away from the main plate portion 321, that is, the main plate portion 321, the hanging portion 322 and the stopper 323 enclose a hanging opening 324 to allow the hanging rack 3 to be reliably hung on the step 2.

[0051] In the embodiment of the present invention, the pylon 3 further includes an abutment plate 33 disposed on the main plate portion 321 and located below the mounting portion 322, and a first abutment surface 331 for abutting against the peripheral side of the tower main chord 11 is formed at the free end of the abutment plate 33. Specifically, the abutment plate 33 is disposed on the side of the main plate portion 321 away from the connecting plate 31, and is horizontally extended toward the corresponding tower main chord 11, so that the first abutment surface 331 located at the free end can abut against the peripheral side of the tower main chord 11. In addition, when the tower main chord 11 of the standard section 1 is set as a circular tube, the first abutment surface 331 can be correspondingly set as an inwardly concave arc abutment surface. More specifically, two abutment plates 33 can be disposed one-to-one on the two mounting plates 32 of the pylon 3, so that the first abutment surfaces 331 of the two abutment plates 33 respectively abut against the peripheral sides of two adjacent tower main chords 11.

[0052] Furthermore, the lifting cylinder 5 is arranged at a middle position of the upper end of the connecting plate 31 .

[0053] like Figure 1 , Figure 2 and Figure 5As shown in the figure, in the embodiment of the present invention, the climbing device further includes a step-changing frame 4 movably hinged to the climbing frame 6. Two clamping openings 414 are formed on the step-changing frame 4 for the step-changing frame 4 to be clamped on two steps 2 of a correspondingly arranged step group. A second abutting surface 431 for abutting against the peripheral side of the climbing main chord 61 of the climbing frame 6 is further formed on the step-changing frame 4. That is, when the climbing device performs a step-changing operation, since the hanging frame 3 and the jacking oil cylinder 5 on the hanging frame 3 need to climb upward, at this time, the step-changing frame 4 can replace the hanging frame 3 to continue to support the climbing frame 6. At the same time, the step-changing frame 4 can be correspondingly clamped on two steps 2 of the step group through the two clamping openings 414, and the second abutting surface 431 on the step-changing frame 4 can also abut against the peripheral side of the climbing main chord 61 of the climbing frame 6, so as to realize stable support for the climbing frame 6 during the step-changing operation through the step-changing frame 4 and avoid obvious shaking. It should be particularly noted that the two steps 2 of the step group for the step-changing frame 4 to be clamped are located above the two steps 2 of the step group for the hanging frame 3 to be hung, and there is at least one step group interval between the step group for the step-changing frame 4 to be clamped and the step group for the hanging frame 3 to be hung.

[0054] See Figure 5 , in the embodiment of the present invention, the step-changing frame 4 includes a cross beam 42 and two support arms 41 arranged at intervals. The upper ends of the two support arms 41 are respectively movably hinged to the climbing frame 6, and the lower ends of the two support arms 41 respectively form clamping openings 414. The cross beam 42 includes an intermediate connecting portion 421 connecting the two support arms 41 and two support portions 422 respectively arranged at both ends of the intermediate connecting portion 421. An abutting block 43 forming the second abutting surface 431 is arranged on the support portion. That is, the intermediate connecting portion 421 of the cross beam 42 is located between the two support arms 41, and the two support portions 422 respectively extend from both ends of the intermediate connecting portion 421 between the two support arms 41, so that the two support portions 422 are respectively arranged opposite to two adjacent climbing main chords 61 of the climbing frame 6 in a one-to-one correspondence. Then, an abutting block 43 is arranged on the side of the support portion 422 facing the corresponding climbing main chord 61, so that the second abutting surface 431 of the abutting block 43 can abut against the corresponding climbing main chord 61. Specifically, before performing the step-changing operation, the step-changing frame 4 can be deflected so that the lower ends of the two support arms 41 are correspondingly clamped on the two steps 2, and the second abutting surface 431 of the abutting block 43 arranged on the cross beam 42 can abut against the peripheral side of the climbing main chord 61 of the climbing frame 6. In addition, the number of the abutting blocks 43 is two, and the two abutting blocks 43 are correspondingly arranged on the two support portions 422 to be able to abut against two adjacent climbing main chords 61 on the climbing frame 6 in a one-to-one correspondence.

[0055] In the embodiment of the present invention, the support arm 41 includes a first rod portion 411, a second rod portion 412, and a third rod portion 413. The first rod portion 411 is vertically arranged and a clamping port 414 is formed at the lower end. The second rod portion 412 is connected to the upper end of the first rod portion 411 and is inclined. The third rod portion 412 is arranged on the first rod portion 411 or the second rod portion 412 and extends in the inclined direction of the second rod portion 412. The end of the second rod portion 412 far from the first rod portion 411 is movably hinged to the climbing frame 6. The cross beam 42 is respectively connected to the free ends of the third rod portions 413 of the two support arms 41, and the abutting block 43 is arranged on the same side as the support arm 41. The first rod portion 411 with the clamping port 414 vertically arranged enables the support arm 41 to be stably clamped on the step 2. In addition, the third rod portion 413 can be arranged on the first rod portion 411 or the second rod portion 412, as long as the third rod portion 413 extends in the inclined direction of the second rod portion 412. More specifically, the third rod portion 413 can extend horizontally in the inclined direction of the second rod portion 412. At the same time, the free end of the third rod portion 413 should extend beyond the horizontal projection of the first rod portion 411 so that the cross beam 42 can be located outside the entire climbing frame 6. The abutting block 43 is arranged on the supporting portion 422 of the cross beam 42 extending beyond the two support arms 41 and on the same side as the support arm 41 on the cross beam 42, enabling the cross beam 42 to abut against the climbing frame 6 from the outside of the climbing frame 6, and the entire cross beam 42 can also play a role in stopping the climbing frame 6.

[0056] Specifically, a limiting portion protrudes from the lower end of the first rod portion 411, and the clamping port 414 is formed by enclosing the lower end surface of the first rod portion 411 and the side of the limiting portion facing the climbing frame 6. Then, the side of the limiting portion facing the climbing frame 6 can abut against the inner side of the step 2, and the abutting block 43 on the cross beam 42 can abut against the climbing frame 6 from the outside of the climbing frame 6, so as to stably support the climbing frame 6 from both the inside and outside of the climbing frame 6.

[0057] As Figure 1 and Figure 2 shown, in the embodiment of the present invention, the climbing frame 6 is provided with inclined web members 62 arranged in a V shape above the jacking oil cylinder 5, so that the stress state of the climbing frame 6 during the jacking operation and the step-changing operation is better, and the climbing frame 6 is more stable. Further, a horizontally extending cross web member 621 is arranged between two adjacent climbing main chords 61 of the climbing frame 6. The output shaft of the jacking oil cylinder 5 is connected to the lower side of the cross web member 621. A V-shaped inclined web member 62 is arranged between the cross web member 621 and the two climbing main chords 61, and the V-shaped opening faces upward. Furthermore, there are three groups of inclined web members 62 arranged in a V shape, and the three groups of inclined web members 62 are sequentially arranged between the two climbing main chords 61.

[0058] See Figure 6, in the embodiment of the present invention, a first roller 63 and a second roller 64 are provided on the climbing frame 6. The roller axes of the first roller 63 and the second roller 64 located at the same corner of the climbing frame 6 are vertically arranged and are respectively abutted against the adjacent two sides of the same tower body main chord 11. Then, through the arrangement of the first roller 63 and the second roller 64, it is convenient for the climbing frame 6 to move during the jacking operation and can be abutted against the tower body main chord 11 of the standard section 1 during the step-changing operation.

[0059] See Figure 6 and Figure 7 , in the embodiment of the present invention, the first roller 63 is arranged to face the connecting pin shaft 12 of the tower body main chord 11, and a receiving space 631 is formed on the roller body of the first roller 63 corresponding to the connecting pin shaft 12. Then, through the arrangement of the receiving space 631, the roller body of the first roller 63 can be arranged to avoid the connecting pin shaft 12 on the standard section 1. Specifically, the roller body of the first roller 63 is arranged in a U-shaped structure.

[0060] To achieve the above object, the present invention also provides a tower crane, wherein the tower crane includes the climbing system for the tower crane according to the above. Since the tower crane adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be elaborated one by one here.

[0061] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0064] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A climbing system for a tower crane, characterized in that, Comprising: A tread group, including two treads (2) respectively arranged on the web side of two adjacent tower body main chords (11) of the tower body standard section (1) and extending towards each other; A climbing device, including a climbing frame (6), a hanging frame (3), and a jacking oil cylinder (5) jacking between the hanging frame (3) and the climbing frame (6). Two hanging plates (32) are respectively arranged at both ends of the hanging frame (3), and the two hanging plates (32) are respectively and correspondingly hung on the two treads (2) of the tread group.

2. The climbing system for tower cranes according to claim 1, wherein, The hanging frame (3) includes a connecting plate (31) connected to the jacking oil cylinder (5). The two hanging plates (32) are respectively arranged at the left and right ends of the connecting plate (31). The hanging plate (32) includes a main board portion (321) arranged at the end of the connecting plate (31) and a hanging portion (322) bent and extended from the upper end of the main board portion (321). A hanging opening (324) is formed at the lower end of the hanging portion (322).

3. The climbing system for a tower crane according to claim 2, characterized in that, The hanging frame (3) further includes an abutting plate (33) arranged on the main board portion (321) and below the hanging portion (322). A first abutting surface (331) for abutting against the circumferential side of the tower body main chord (11) is formed at the free end of the abutting plate (33).

4. The climbing system for a tower crane according to claim 1, characterized in that, The climbing device further includes a step-changing frame (4) movably hinged to the climbing frame (6). Two clamping openings (414) are formed on the step-changing frame (4) for the step-changing frame (4) to be clamped on the two treads (2) of the correspondingly arranged tread group. A second abutting surface (431) for abutting against the circumferential side of the climbing main chord (61) of the climbing frame (6) is further formed on the step-changing frame (4).

5. The climbing system for tower crane according to claim 4, characterized in that, The step-changing frame (4) includes a cross beam (42) and two support arms (41) arranged at intervals. The upper ends of the two support arms (41) are respectively movably hinged to the climbing frame (6). The lower ends of the two support arms (41) respectively form the clamping openings (414). The cross beam (42) includes an intermediate connecting portion (421) connecting the two support arms (41) and two support portions (422) respectively arranged at both ends of the intermediate connecting portion (421). An abutting block (43) forming the second abutting surface (431) is arranged on the support portion (422).

6. The climbing system for a tower crane according to claim 5, characterized in that, The support arm (41) includes a first rod portion (411), a second rod portion (412) and a third rod portion (413). The first rod portion (411) is vertically arranged and forms the clamping opening (414) at the lower end. The second rod portion (412) is connected to the upper end of the first rod portion (411) and is inclined. The third rod portion (413) is arranged on the first rod portion (411) or the second rod portion (412) and extends in the inclined direction of the second rod portion (412). One end of the second rod portion (412) far from the first rod portion (411) is movably hinged to the climbing frame (6). The cross beam (42) is respectively connected to the free ends of the third rod portions (413) of the two support arms (41). The abutting block (43) is arranged on the same side as the support arm (41).

7. The climbing system for tower crane according to any one of claims 1 to 6, characterized in that, The climbing frame (6) is provided with diagonal web members (62) arranged in a V shape above the jacking oil cylinder (5).

8. The climbing system for a tower crane according to any one of claims 1 to 6, characterized in that, The climbing frame (6) is provided with a first roller (63) and a second roller (64). The axis lines of the first roller (63) and the second roller (64) located at the same corner of the climbing frame (6) are vertically arranged and respectively abut against the adjacent sides of the same main chord member (11) of the tower body.

9. The climbing system for tower crane according to claim 8, characterized in that, The first roller (63) is arranged to face the connecting pin shaft (12) of the main chord member (11) of the tower body. A receiving space (631) is formed on the roller body of the first roller (63) corresponding to the connecting pin shaft (12).

10. A tower crane, characterized in that, The tower crane includes the climbing system for tower crane according to any one of claims 1 to 9.

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