Method for introducing a standard segment of an internal climbing tower

Abstract

The application relates to the technical field of tower crane equipment, and provides a standard section introduction method of an inner jacking tower crane, which adopts a circular track fixed on a lower support and a rolling device movably connected to the circular track, a chain is arranged on the rolling device, the tower crane lifts the standard section to be introduced to an introduction position through a lifting arm, the rolling device is moved to a suitable position along the circular track, then the chain is fixedly connected with the standard section, then the connection between the lifting arm and the standard section is released, the rolling device is used to adjust the standard section to be introduced to an installation position along the circular track to wait for installation. After the lifting arm lifts the standard section to be introduced, whether the standard section is lifted from a distance to move towards the tower body or is lifted from below the range that can be pulled by the chain, the standard section will not collide with the circular track or the rolling device, and the application is safer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tower crane equipment, in particular to a standard section introduction method of an inner jacking tower crane. BACKGROUND

[0002] CN202121488505.9 discloses a standard section introduction device of a tower crane, which comprises a lifting appliance, an introduction beam and an introduction trolley assembly. The lifting appliance comprises a lifting plate and a rotatable pull rod hung below the lifting plate. The introduction beam is provided with a poking member. The introduction trolley assembly comprises an introduction trolley in sliding contact with the introduction beam and a lifting frame. The lifting frame is hung above the introduction trolley, and the lower part of the lifting frame is used for hanging the standard section. The two sides of the lifting frame are hung on the pull rod. The poking member is used for poking the pull rod to rotate outward, so that the pull rod is separated from the lifting frame. In actual jacking and tower lowering operation, the worker can take out the poking member on the introduction beam and insert it into the pull rod of the lifting appliance. The pull rod is poked to rotate outward, so that the pull rod and the lifting frame are separated, thereby necessary adjustment is carried out, and dangerous behaviors such as climbing out of the tower body are avoided, and the introduction platform, rail and other structures are saved.

[0003] However, since the introduction device in the above scheme extends outward from the tower body, when the standard section to be introduced is lifted by the lifting arm, whether it is lifted from the far end and then moved to the introduction device, or directly lifted from below the device, there is a risk of collision between the lifted standard section and the introduction device. SUMMARY

[0004] The present application provides a standard section introduction method of an inner jacking tower crane. The method adopts a circular track fixed on a lower support and a rolling device movably connected to the circular track. When inner jacking is needed, the lifting arm lifts the standard section to be introduced. The lifted standard section will not collide with the circular track or the rolling device, which is more secure. After the chain on the rolling device is fixedly connected to the lifted standard section, the connection between the lifting arm and the lifted standard section can be disconnected, and waiting for installation.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A standard section introduction method of an inner jacking tower crane, the method relates to a tower crane, the tower crane comprises a tower body, a lifting arm, a circular track and a rolling device. The lifting arm is fixedly connected to the inner sleeve frame on the lower support and the tower body. The circular track is fixedly connected to the lower support. The rolling device is movably connected to the circular track. The rolling device is provided with a chain, which is used to pull the standard section.

[0007] The method specifically comprises:

[0008] The tower crane lifts the standard section to be introduced to the introduction position by the boom, the rolling device moves to the appropriate position along the circular track, is fixedly connected with the standard section through the chain, then the connection between the boom and the standard section is released, and the rolling device is used to adjust the standard section to be introduced to the installation position along the circular track to wait for installation.

[0009] In the above standard section introduction method, a plurality of first connecting pieces are arranged on the circular track, the first connecting pieces are perpendicular to the upper surface of the circular track, a plurality of second connecting pieces extending outward along the side surface of the lower support are arranged on the lower support, and the circular track is fixedly connected with the lower support through the connecting piece penetrating the first connecting piece and the second connecting piece.

[0010] When the standard section needs to be introduced, the circular track is fixedly connected with the lower support.

[0011] After the introduction is completed, the connecting piece is disassembled to separate the circular track from the lower support.

[0012] In the above standard section introduction method, the first connecting pieces are arranged in pairs, a connecting groove is formed between the two first connecting pieces, and the lower support is fixedly connected with the first connecting piece after the second connecting piece is inserted into the connecting groove.

[0013] In the above standard section introduction method, the circular track is further provided with an outer groove and an inner groove, the rolling device comprises at least two running wheels, the running wheels comprise an outer wheel and an inner wheel, the outer wheel and the inner wheel are in an integral structure, the inner wheels of the two running wheels abut on the outer groove and the inner groove of the circular track respectively, and the outer wheels of the two running wheels are located outside the circular track.

[0014] In the above standard section introduction method, the rolling device further comprises a bearing, a fixed shaft, a fixed cap, a fixed pin and a fixed plate, the running wheel is provided with a placing groove, the bearing is fixed in the placing groove, the fixed shaft penetrates the bearing, the outer wheel, the fixed plate and the fixed cap in sequence, the end of the fixed shaft is fixed by the fixed pin, and the fixed plate is located outside the two outer wheels.

[0015] In the above standard section introduction method, the rolling device further comprises a hook assembly, the hook assembly is located between the two fixed plates, and the two sides of the hook are fixedly connected with the fixed plates on the two sides of the rolling device.

[0016] In the above standard section introduction method, the hook assembly comprises a hook; the hook is a ring-shaped hook; and the chain is installed in the ring-shaped hook.

[0017] When the standard section needs to be introduced, one end of the chain is fixed in the ring-shaped hook, and the other end of the chain is fixedly connected with the top of the standard section to be introduced.

[0018] After the introduction is finished, the chain is disassembled, the chain is separated from the ring-shaped lifting hook, and the chain is prevented from colliding with the tower body.

[0019] In the standard section introduction method described above, the fixing plate is a T-shaped plate structure, and the left and right ends of the T-shaped plate are provided with bending parts in the same direction as the arrangement direction of the fixing shaft.

[0020] In the standard section introduction method described above, the first connecting piece is at least four pairs, the second connecting piece is at least four, and the connection mode between the first connecting piece, the circular track, the second connecting piece and the lower support is welding.

[0021] Compared with the prior art, the beneficial effects of the present application are:

[0022] The present application adopts a circular track fixed on the lower support and a rolling device movably connected to the circular track. When internal jacking is needed, the standard section to be introduced is lifted by the lifting arm, and the lifted standard section will not collide with the circular track and the rolling device, which is more secure. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a connection perspective view of the circular track and the lower support in the standard section introduction method of example 1;

[0024] Figure 2 is a front view of the connection of the rolling device and the circular track in the standard section introduction method of example 1;

[0025] Figure 3 is a side view of the connection of the rolling device and the circular track in the standard section introduction method of example 1;

[0026] Figure 4 is a top view of the connection of the rolling device and the circular track in the standard section introduction method of example 1;

[0027] Figure 5 is a specific implementation diagram of the standard section introduction method of example 1;

[0028] Figure 6 is a step diagram of the standard section introduction method of example 1. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] Example 1

[0031] Reference Figures 1-6 A method for introducing a standard section of an inner jacking tower, the method relates to a tower, the tower comprising a tower body, a jib, a circular track 3, a rolling device 4, the jib being fixedly connected through a lower support 1 and an inner sleeve frame 2 on the tower body, the circular track 3 being fixedly connected with the lower support 1, the rolling device 4 being movably connected on the circular track 3, a chain 6 being arranged on the rolling device 4, the chain 6 being used for pulling a standard section 7;

[0032] The specific introduction method is as follows:

[0033] The circular track 3 is installed on the lower support 1 of the tower, and then the rolling device 4 is installed on the circular track 3, the tower body is hoisted through the jib, the standard section 7 to be introduced is hoisted, when hoisted to the introduction position, the rolling device 4 is dragged to move to the appropriate position along the circular track 3, then the chain 6 on the rolling device 4 and the top of the standard section 7 are fixedly connected, reference Figure 5 After confirming the reliability of the connection, the connection between the jib and the hoisted standard section 7 can be disassembled, and finally the position of the hoisted standard section 7 is adjusted by the rolling device 4, and then waiting for installation.

[0034] Under this design, during the hoisting of the standard section 7 to be introduced, whether moving from a distance to the tower body direction or hoisting from below the range that can be pulled by the chain 6, no collision with the circular track 3 or the rolling device 4 will occur, which is more secure.

[0035] It should be noted that on the tower, the lower support 1 is fixedly connected with the inner sleeve frame 2 through the L-shaped angle steel at the bottom, which is a common knowledge in the art, so in the embodiment, the second connecting piece 11 is arranged at the intersection of the side surface of the L-shaped angle steel and extends outward, a plurality of first connecting pieces 33 extending outward and perpendicular to the upper surface are arranged on the circular track 3, and the circular track 3 is fixedly connected with the lower support 1 through the connecting piece 8 penetrating the first connecting piece 33 and the second connecting piece 11, wherein the connecting piece 8 can be a bolt or a pin shaft;

[0036] When the standard section 7 needs to be introduced, the operator in the art needs to first fix the circular track 3 with the lower support 1;

[0037] After the introduction is completed, the operator in the art needs to disassemble the connecting piece 8 to separate the circular track 3 and the lower support 1, so as to avoid the accumulation of dust and dirt in the circular track 3, thereby affecting the movement of the rolling device 4.

[0038] Preferably, in order to improve the connection stability between the circular track 3 and the lower support 1, the first connecting pieces 33 are arranged in pairs, and a connecting groove is formed between the two first connecting pieces 33, and the lower support 1 is inserted into the connecting groove through the second connecting piece 11, and then the connecting piece 8 is fixedly connected with the first connecting piece 33, and this connection is more stable and is not easy to deform under long-term stress.

[0039] Further, the second connecting piece 11 can also be arranged in pairs, and a connecting groove is formed between the two second connecting pieces 11 to connect the first connecting piece 33, but the first connecting piece 33 is preferably arranged in pairs.

[0040] Preferably, the circular track 3 in the embodiment adopts a structure with an outer groove 31 and an inner groove 32, so in order to adapt to such a track, the rolling device 4 in the embodiment adopts two runner wheels 41, and the runner wheel 41 adopts a T-shaped wheel mechanism, that is, the runner wheel 41 includes an outer wheel 411 and an inner wheel 412, the outer wheel 411 and the inner wheel 412 are integrally formed, and the inner wheels 412 of the two runner wheels 41 abut on the outer groove 31 and the inner groove 32 of the circular track 3 respectively, and the outer wheels 411 of the two runner wheels 41 are located outside the circular track 3. The runner wheel 41 under this design has stronger impact resistance.

[0041] As a further optimization of the embodiment, the rolling device 4 further includes a bearing 42, a fixed shaft 45, a fixed cap 44, a fixed pin 46, and a fixed plate 43, the runner wheel 41 is provided with a placing groove, the bearing 42 is fixed in the placing groove, the fixed shaft 45 passes through the bearing 42, the outer wheel 411, the fixed plate 43, and the fixed cap 44 in sequence, and the end of the fixed shaft 45 is fixed by the fixed pin 46, and the fixed plate 43 is located outside the two outer wheels 411. Compared with directly using the bearing 42 as the rolling device 4, in this design, the bearing 42 is placed in the placing groove of the runner wheel 41, which can better protect the bearing 42 and prevent the bearing 42 from rusting and being stuck.

[0042] In the embodiment, the rolling device 4 further includes a hook assembly 5, the two sides of the hook assembly 5 are fixedly connected with the fixed plates 43 on the two sides of the rolling device 4, in order to prevent the chain 6 on the rolling device 4 from being separated from the hook assembly 5 during movement, so the hook in the embodiment is a ring-shaped hook 51, the ring-shaped hook 51 has a U-shaped structure, and a locking device 52 is further arranged at the opening end of the U-shaped structure, and the chain 6 is not easy to be separated after being installed in the ring-shaped hook 51.

[0043] When a standard section 7 needs to be introduced, one end of the chain 6 is fixed in the ring-shaped hook, and the other end of the chain 6 is fixedly connected with the top of the standard section 7 that needs to be introduced.

[0044] After the introduction is over, the operator of the field should promptly disassemble the chain 6, so that the chain 6 is separated from the annular hook, because the chain 6 in the air will swing under the action of the wind, and when the swing is too large, it will collide with the tower body.

[0045] In this embodiment, the fixed plate 43 is a T-shaped plate structure, and the left and right ends of the T-shaped plate are provided with bending parts 431 in the same direction as the arrangement direction of the fixed shaft 45. We found that during work, if the bearing 42, the runner 41 or the fixed shaft 45 is damaged due to an accident, there is a risk of accidents. Therefore, the fixed plate 43 in this embodiment also has a fall protection function, which greatly improves the safety of work.

[0046] Preferably, to ensure the stability of the circular track 3, the first connecting piece 33 is preferably four pairs, and the second connecting piece 11 is preferably four. Since welding has the advantages of high safety, strong overall integrity, high strength, and good density, the connection between the first connecting piece 33 and the circular track 3 and the second connecting piece 11 and the lower support 1 is all by welding.

Claims

1. A method for introducing standard sections into an internal jacking tower crane, characterized in that, The method relates to a tower crane, which includes a tower body, a jib, a circular track, and a rolling device. The jib is fixedly connected to an inner frame on the tower body via a lower support. The circular track is fixedly connected to the lower support. The rolling device is movably connected to the circular track and is equipped with a chain for pulling standard sections. The method is specifically as follows: The tower crane lifts the standard section to be introduced to the introduction position through the boom. After the rolling device moves to the appropriate position along the circular track, it is fixedly connected to the standard section through the chain. Then, the connection between the boom and the standard section is loosened, and the rolling device is used to adjust the standard section to be introduced to the installation position along the circular track to wait for installation. The circular track is provided with a plurality of first connecting pieces, the first connecting pieces being perpendicular to the upper surface of the circular track. The lower support is provided with a plurality of second connecting pieces extending outward along the side of the lower support. The circular track is fixedly connected to the lower support by connecting members passing through the first and second connecting pieces. When a standard section needs to be introduced, the circular track is fixedly connected to the lower support. After the introduction is completed, the connector is disassembled to separate the circular track from the lower support; The circular track is also provided with an outer groove and an inner groove. The rolling device includes at least two running wheels, each running wheel including an outer wheel and an inner wheel. The outer wheel and the inner wheel are integrally formed. The inner wheels of the two running wheels respectively abut against the outer groove and the inner groove of the circular track. The outer wheels of the two running wheels are located outside the circular track. The rolling device also includes a bearing, a fixed shaft, a fixed cap, a fixed pin, and a fixed plate. The running wheel is provided with a placement groove, and the bearing is fixed in the placement groove. The fixed shaft passes through the bearing, the outer wheel, the fixed plate, and the fixed cap in sequence, and is fixed by a fixed pin passing through the end of the fixed shaft. The fixed plate is located on the outside of the two outer wheels. The fixing plate is a T-shaped plate structure, and both the left and right ends of the T-shaped plate are provided with bent portions in the same direction as the fixing shaft.

2. The standard section introduction method according to claim 1, characterized in that, The first connecting pieces are arranged in pairs, and a connecting groove is formed between the two first connecting pieces. The lower support is fixedly connected to the first connecting piece after being inserted into the connecting groove by the second connecting piece.

3. The standard section introduction method according to claim 1, characterized in that, The rolling device also includes a hook assembly located between two fixed plates, with both sides of the hook fixedly connected to the fixed plates on both sides of the rolling device.

4. The standard section introduction method according to claim 3, characterized in that, The hook assembly includes a hook; the hook is a ring hook; the chain is installed inside the ring hook; When a standard section needs to be introduced, one end of the chain is fixed inside the ring hook, and the other end of the chain is fixedly connected to the top of the standard section to be introduced. After the introduction is completed, the chain is disassembled to separate it from the ring hook, preventing the chain from colliding with the tower body.

5. The standard section introduction method according to claim 1, characterized in that, The first connecting piece has at least four pairs, the second connecting piece has at least four, and the connection between the first connecting piece and the circular track and the second connecting piece and the lower support are both welded.

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