A method for installing a self-climbing boom tower crane

Abstract

The present application provides a method for installing a self-climbing boom tower crane, which relates to the field of building construction technology. The method for installing a self-climbing boom tower crane comprises the following steps: S1, placing a first support beam embedded part and a second support beam embedded part at corresponding positions on the outer wall of the core tube following the progress of the core tube on site; S2, installing a first support beam at the first support beam embedded part, installing a first part of the tower body on the first support beam, and the height of the first part of the tower body exceeds the position where the second support beam embedded part is located; S3, installing a second support beam at the second support beam embedded part, installing a second part of the tower body on the second support beam; S4, installing a machine head at the top of the second part of the tower body. The method for installing a self-climbing boom tower crane adopts an external hanging type installation and construction method in which the support beam is arranged on the structural beam, which effectively overcomes the problem of narrow space arrangement of the elevator shaft or stairwell in the core tube, and also avoids the problem of post-structural construction caused by the tower crane passing through the floor plate.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a method for installing a self-climbing boom tower crane. Background Art

[0002] An internal climbing tower crane, abbreviated as an internal climbing crane, is a tower crane installed in the elevator shaft or stairwell inside a building. It can gradually climb upwards as the construction progresses. In addition to special internal climbing tower cranes, general self-erecting tower cranes can also be used as internal climbing towers by replacing the climbing system and modifying and adding some accessories.

[0003] Traditional internal climbing tower cranes are installed in elevator shafts or stairwells inside buildings, which have great limitations. In addition, the space inside the shaft is small, making it inconvenient to install, which causes construction inconvenience to a certain extent. In addition, there are also post-structural construction problems caused by the internal climbing tower cranes passing through floor slabs. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present application provides a method for installing a self-climbing boom tower crane. Compared with the installation process of a traditional self-climbing boom tower crane, the method for installing a self-climbing boom tower crane improves the applicability and flexibility of the self-climbing boom tower crane by installing a first support beam and a second support beam on the outer wall of the core tube. The method is no longer limited to the installation of a traditional self-climbing boom tower crane in an elevator shaft or stairwell inside a building.

[0005] The self-climbing boom tower crane installation method provided in this application adopts the following technical solution:

[0006] A method for installing a self-climbing boom tower crane comprises the following steps:

[0007] S1. Place the first support beam embedded part and the second support beam embedded part at the corresponding position of the outer wall of the core tube according to the progress of the core tube on site;

[0008] S2, installing a first support beam at the first support beam embedded part, and installing a first part of the tower body on the first support beam, wherein the height of the first part of the tower body exceeds the position where the second support beam embedded part is located;

[0009] S3, installing a second support beam at the second support beam embedded part, and installing a second part of the tower body on the second support beam;

[0010] S4. Install a machine head on the top of the second part of the tower body.

[0011] By adopting the above technical scheme, according to the climbing plan, the first support beam embedded parts and the second support beam embedded parts are placed at corresponding positions following the progress of the main building on site, and when the strength of the outer wall of the core tube reaches the design strength, the first support beam, the first part of the tower body, the second support beam, the second part of the tower body and the head are installed, so that the applicability and flexibility of the installed self-climbing boom tower crane are improved, and the installation method of the self-climbing boom tower crane is no longer limited to the traditional self-climbing boom tower crane being installed in the elevator shaft or stairwell inside the building.

[0012] Preferably, the method for installing a self-climbing boom tower crane also includes installing a first oblique support below the first support beam, wherein one end of the first oblique support is connected to the outer wall of the core tube, and the other end is connected to the first support beam.

[0013] Specifically, when installing the first oblique support, the flatness error of the upper surface of the first support beam does not exceed 1‰.

[0014] By adopting the above technical solution, the first oblique support is designed and installed on the lower side of the first support beam, which can ensure that the first support beam has sufficient supporting force. The specific length and installation position of the first oblique support are determined according to the climbing planning drawing. The first oblique support can be installed before or after the first support beam is installed, preferably before the first part of the tower body is installed.

[0015] Preferably, the installation method of the self-climbing boom tower crane also includes installing a second oblique support below the second support beam, wherein one end of the second oblique support is connected to the outer wall of the core tube, and the other end is connected to the second support beam.

[0016] Specifically, when installing the second oblique support, the flatness error of the upper surface of the second support beam does not exceed 1‰.

[0017] By installing the second oblique support below the second support beam, the bearing capacity of the second support beam can be increased.

[0018] Preferably, when installing the first support beam, the concrete strength of the outer wall of the core tube is not less than 75%.

[0019] Preferably, when the first part of the tower body is installed, the concrete strength of the outer wall of the core tube reaches 100%.

[0020] The corresponding structural components meet the bearing capacity requirements and can improve the safety of the self-climbing boom tower crane.

[0021] Preferably, the installation of the first part of the tower body includes installing, from bottom to top, a jacking section, two standard sections, a 2m reinforced section and a 5m reinforced section in sequence;

[0022] The installation of the second part of the tower body includes installing a 5m reinforced section and eight standard sections in sequence from bottom to top.

[0023] Preferably, the head includes the following installation steps:

[0024] Install the slewing lower seat, the first slewing platform and the slewing gear ring;

[0025] Install the upper rotary seat, the second rotary platform and the driver's cab;

[0026] Install lifting and luffing mechanisms;

[0027] Install A-frame towers;

[0028] Install the boom;

[0029] Install the counterweight;

[0030] Threading and winding luffing wire rope;

[0031] Thread and wind the main hoisting wire rope;

[0032] Installation completed;

[0033] debug.

[0034] Preferably, the head includes the following installation steps:

[0035] Assemble the slewing lower seat, the first slewing platform and the slewing gear ring on the ground. The four lower legs of the slewing lower seat are connected to the top standard section of the second tower body by 16 10.9-grade M48 high-strength bolts. The upper part of the slewing support is connected to the slewing support by 90 10.9-grade M36 high-strength bolts.

[0036] Assemble and hoist the slewing upper seat and the second platform on the ground. The slewing upper seat and the slewing bearing are connected by 90 10.9-grade M36 high-strength bolts; the driver's cab is connected to the slewing upper seat by high-strength pins;

[0037] The hoisting winch and the slewing upper seat are connected by 4 high-strength pins, and the luffing winch and the slewing upper seat are connected by 4 high-strength pins; after installing the driver's cab and the hoisting winch, connect the electrical part of the driver's cab, and connect the hoisting winch, luffing winch, and slewing part hydraulic pipelines;

[0038] Assemble the A-shaped tower on the ground and hoist it as a whole; the A-shaped tower pull rod and the pressure rod are connected by two high-strength pins, and the A-shaped tower and the rotating upper seat are connected by four high-strength pins;

[0039] Assemble the boom on the ground, and connect each section with four high-strength pins; install the boom cable, halter, temporary arm-pulling wire rope and cage, and fix them on the boom; when hoisting the boom, it should be tilted at a certain angle, and the upper hanging point of the boom is at its lifting lug; the root of the boom is connected to the slewing upper seat by two high-strength pins. After the pins are connected, command the installation crane to lift the hook, so that the boom rotates a certain angle with the pin at the root of the boom as the center, fix one end of the temporary arm-pulling rope on the top of the A-shaped tower, and remove the hook of the installation crane;

[0040] Install the counterweight from the end of the tie rod near the A-shaped tower outward;

[0041] The luffing wire rope is led out from the luffing winch, passes through the pulley at the top of the A-shaped tower, and is wound back and forth at a rate of 6 times between the pulley block at the top of the A-shaped tower and the bridle pulley block;

[0042] The hoisting wire rope is led out from the hoisting winch, passed through the rollers on the boom, the front guide wheel, the load wheel, the pulley at the front end of the boom, and then led back to the front of the boom through the hook pulley, and fixed to the universal joint at the front of the boom through the wedge joint. The hoisting wire rope is wound at a single rate;

[0043] After the whole machine is installed according to the above steps, connect the electrical and hydraulic related lines and oil lines, and install and debug various safety protection devices. After debugging, you can carry out the lifting work;

[0044] Check whether each mechanism is operating correctly; check whether the wire ropes are in normal working condition and whether there is friction with the structural parts; in a windless state, check the verticality of the tower axis to the supporting surface, with an allowable error of 4 / 1000.

[0045] The debugging method is consistent with the traditional debugging method.

[0046] In summary, this application has the following beneficial technical effects:

[0047] The installation method of a self-climbing boom tower crane provided in the present application improves the applicability and flexibility of the self-climbing boom tower crane by installing the first support beam and the second support beam on the outer wall of the core tube, and the outer wall of the core tube meets the bearing requirements after structural internal force calculation. The self-climbing boom tower crane is no longer limited to being installed in an elevator shaft or stairwell inside a building. The installation method of the self-climbing boom tower crane embodies the demonstration role of the development of construction technology based on project entities, and has good social benefits. DETAILED DESCRIPTION

[0048] The present application is described in further detail below.

[0049] Example 1

[0050] This embodiment provides a method for installing a self-climbing boom tower crane, comprising the following steps:

[0051] S1. Place the first support beam embedded part and the second support beam embedded part at the corresponding position of the outer wall of the core tube according to the progress of the core tube on site;

[0052] S2, installing the first support beam at the first support beam embedded part, installing the first part of the tower body on the first support beam, the height of the first part of the tower body exceeds the position where the second support beam embedded part is located;

[0053] S3, installing the second support beam at the second support beam embedded part, and installing the second part of the tower body on the second support beam;

[0054] S4. Install the machine head on the top of the second part of the tower.

[0055] Traditional internal climbing tower cranes are installed in elevator shafts or stairwells inside buildings, which have great limitations. In addition, the shafts or stairwells have small spaces, making them inconvenient to install, which to a certain extent causes construction inconvenience. The present application installs the first support beam and the second support beam on the outer wall of the core tube, so that the self-climbing boom tower crane is installed on the outer wall of the core tube, thereby improving the applicability and flexibility of the self-climbing boom tower crane.

[0056] In order to improve the supporting force of the first support beam, a first oblique support is installed below the first support beam, one end of the first oblique support is connected to the outer wall of the core tube, and the other end is connected to the first support beam. Specifically, when installing the first oblique support, the flatness error of the upper surface of the first support beam does not exceed 1‰.

[0057] In order to improve the supporting force of the second support beam, a second oblique support is installed below the second support beam, one end of the second oblique support is connected to the outer wall of the core tube, and the other end is connected to the second support beam. Specifically, when installing the second oblique support, the flatness error of the upper surface of the second support beam does not exceed 1‰.

[0058] The length and installation position of the first oblique support and the second oblique support shall be determined according to the climbing planning drawings.

[0059] In order to ensure the safety of the installed self-climbing boom tower crane, when installing the first support beam, the concrete strength of the outer wall of the core tube shall not be less than 75%; when installing the first part of the tower body, the concrete strength of the outer wall of the core tube shall reach 100%. The corresponding structural components meet the bearing capacity requirements, which can improve the safety of the self-climbing boom tower crane.

[0060] Specifically, the installation of the first part of the tower body includes installing one jacking section, two standard sections, one 2m reinforced section and one 5m reinforced section in sequence from bottom to top;

[0061] The installation of the second part of the tower body includes installing a 5m reinforced section and eight standard sections in sequence from bottom to top.

[0062] The first part of the tower body is installed with a jacking section, two standard sections, a 2m reinforcement section and a 5m reinforcement section. At this time, the height of the first part of the tower body reaches the installation position of the second support beam.

[0063] The second part of the tower body was completed by installing a 5m reinforced section and eight standard sections.

[0064] Specifically, the head includes the following installation steps:

[0065] Install the slewing lower seat, the first slewing platform and the slewing gear ring;

[0066] Install the upper rotary seat, the second rotary platform and the driver's cab;

[0067] Install lifting and luffing mechanisms;

[0068] Install A-frame towers;

[0069] Install the boom;

[0070] Install the counterweight;

[0071] Threading and winding luffing wire rope;

[0072] Thread and wind the main hoisting wire rope;

[0073] Installation completed;

[0074] debug.

[0075] Example 2

[0076] This embodiment provides a method for installing a self-climbing boom tower crane, wherein the crane head includes the following specific installation steps:

[0077] Assemble the slewing lower seat, the first slewing platform and the slewing gear ring on the ground. The four lower legs of the slewing lower seat are connected to the top standard section of the second part of the tower body through 16 10.9-grade M48 high-strength bolts, and the upper part of the slewing support is connected to the slewing support through 90 10.9-grade M36 high-strength bolts;

[0078] Assemble and hoist the slewing upper seat and the second platform on the ground. The slewing upper seat and the slewing bearing are connected by 90 10.9-grade M36 high-strength bolts; the driver's cab and the slewing upper seat are connected by high-strength pins; when installing the slewing upper seat, there are bolts that cannot be installed in the dead angle below the slewing drive reducer. At this time, the slewing drive reducer needs to be moved away from the bolt hole in the dead angle, and then the bolts at that location need to be tightened;

[0079] The hoisting winch and the slewing upper seat are connected by 4 high-strength pins, and the luffing winch and the slewing upper seat are connected by 4 high-strength pins. After installing the driver's cab and the hoisting winch, connect the electrical part of the driver's cab, and connect the hoisting winch, luffing winch, and the hydraulic pipelines of the slewing part to facilitate the installation of subsequent components and cooperate with the crane to hoist other components;

[0080] Assemble the A-shaped tower on the ground and hoist it as a whole; the A-shaped tower tie rod and compression rod are connected by 2 high-strength pins, and the A-shaped tower and the slewing upper seat are connected by 4 high-strength pins;

[0081] Assemble the boom on the ground, and connect each section with 4 high-strength pins; install the boom cable, halter, temporary arm wire rope and cage, and fix them on the boom; when hoisting the boom, it should be tilted at a certain angle, and the upper hoisting point of the boom should be at its lifting lug; the root of the boom is connected to the slewing upper seat with 2 high-strength pins. After connecting the pins, command the installation crane to lift the hook, so that the boom rotates a certain angle (about 15°) with the pin at the root of the boom as the center, fix one end of the temporary arm rope on the top of the A-shaped tower, and remove the hook of the installation crane;

[0082] Install the counterweight from the end of the A-shaped tower rod outward; that is, install the counterweight from the inside out. The total weight of the counterweight is 45t, which is cast with C30 steel sand concrete. The specific situation is subject to the actual situation of the project. After the counterweight is installed, it must be firmly fixed to prevent the counterweight from shaking;

[0083] The luffing wire rope is led out from the luffing winch, passes through the pulley at the top of the A-shaped tower, and is wound back and forth at a rate of 6 times between the pulley block at the top of the A-shaped tower and the bridle pulley block; the luffing wire rope is φ32mm;

[0084] The lifting wire rope is led out from the lifting winch, passed through the rollers on the boom, the front guide wheel, the load wheel, the pulley at the front end of the boom, and then led back to the front of the boom through the hook pulley, and fixed to the universal joint at the front of the boom through a wedge joint. The lifting wire rope is wound at a single rate; the lifting wire rope is φ40mm;

[0085] After the whole machine is installed according to the above steps, connect the electrical and hydraulic related lines and oil lines, and install and debug various safety protection devices. After debugging, you can carry out the lifting work;

[0086] Check whether each mechanism is operating correctly; check whether the wire ropes are in normal working condition and whether there is friction with the structural parts (all abnormal conditions should be eliminated); in a windless state, check the verticality of the tower axis to the supporting surface, with an allowable error of 4 / 1000.

[0087] The debugging method is consistent with the traditional debugging method.

[0088] The installation method of the self-climbing boom tower crane was successfully applied to the CBD Central Plaza 18﹟ plot project.

[0089] The CBD Central Plaza 18﹟ plot project has a total of 62 floors above ground, with 4 floors (partially 5 floors) of podiums arranged with large-scale commercial, catering and hotel supporting functions, and the tower top elevation is 301.6m (the frame top elevation is 316.93m). The installation and construction method of external hanging type and support beams arranged on structural beams effectively overcomes the problem of small space arrangement of elevator shafts or stairwells in the core tube, and also avoids the post-structural construction problem caused by tower cranes passing through floor slabs.

[0090] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for installing a self-climbing boom tower crane, characterized in that: The steps include: S1. Following the progress of the core tube on site, place the first support beam embedded part and the second support beam embedded part at the corresponding position of the outer wall of the core tube; S2, installing the first support beam at the first support beam embedded part, installing the first part of the tower body on the first support beam, the height of the first part of the tower body exceeds the position of the second support beam embedded part; the installation of the first part of the tower body includes installing one jacking section, two standard sections, one 2m reinforced section and one 5m reinforced section in sequence from bottom to top; the installation of the second part of the tower body includes installing one 5m reinforced section and eight standard sections in sequence from bottom to top; S3, installing a second support beam at the second support beam embedded part, and installing a second part of the tower body on the second support beam; S4, installing a machine head on the top of the second part of the tower body; the machine head includes the following installation steps: Install the slewing lower seat, the first slewing platform and the slewing gear ring; Install the upper rotary seat, the second rotary platform and the driver's cab; Install lifting and luffing mechanisms; Install A-frame towers; Install the boom; Install the counterweight; Threading and winding the luffing wire rope; Thread and wind the main hoisting wire rope; Installation completed; debug; The head also includes the following installation steps: Assemble the slewing lower seat, the first slewing platform and the slewing gear ring on the ground. The four legs at the bottom of the slewing lower seat are connected to the top standard section of the second tower body by 16 10.9-grade M48 high-strength bolts. The upper part of the slewing lower seat is connected to the slewing bearing by 90 10.9-grade M36 high-strength bolts. Assemble and hoist the slewing upper seat and the second slewing platform on the ground. The slewing upper seat and the slewing support are connected by 90 10.9-grade M36 high-strength bolts; the driver's cab is connected to the slewing upper seat by high-strength pins; The hoisting winch and the slewing upper seat are connected by 4 high-strength pins, and the luffing winch and the slewing upper seat are connected by 4 high-strength pins; after installing the driver's cab and the hoisting winch, connect the electrical part of the driver's cab, and connect the hoisting winch, luffing winch, and slewing part hydraulic pipelines; Assemble the A-shaped tower on the ground and hoist it as a whole; the A-shaped tower pull rod and the pressure rod are connected by two high-strength pins, and the A-shaped tower and the rotating upper seat are connected by four high-strength pins; Assemble the boom on the ground, and connect each section with four high-strength pins; install the boom cable, halter, temporary arm-pulling wire rope and cage, and fix them on the boom; when hoisting the boom, it should be tilted at a certain angle, and the upper hanging point of the boom is at its lifting lug; the root of the boom is connected to the slewing upper seat by two high-strength pins. After the pins are connected, command the installation crane to lift the hook, so that the boom rotates a certain angle with the pin at the root of the boom as the center, fix one end of the temporary arm-pulling rope on the top of the A-shaped tower, and remove the hook of the installation crane; Install the counterweight from the end of the tie rod near the A-shaped tower outward; The luffing wire rope is led out from the luffing winch, passes through the pulley at the top of the A-shaped tower, and is wound back and forth at a rate of 6 times between the pulley block at the top of the A-shaped tower and the bridle pulley block; The hoisting wire rope is led out from the hoisting winch, passed through the rollers on the boom, the front guide wheel, the load wheel, the pulley at the front end of the boom, and then led back to the front of the boom through the hook pulley, and fixed to the universal joint at the front of the boom through the wedge joint. The hoisting wire rope is wound at a single rate; After the whole machine is installed according to the above steps, connect the electrical and hydraulic related lines and oil lines, and install and debug various safety protection devices. After debugging, you can carry out the lifting work; Check whether each mechanism is operating correctly; check whether the wire ropes are in normal working condition and whether there is friction with the structural parts; in a windless state, check the verticality of the tower axis to the supporting surface, with an allowable error of 4 / 1000.

2. The method for installing a self-climbing boom tower crane according to claim 1, characterized in that: It also includes installing a first oblique support below the first support beam, wherein one end of the first oblique support is connected to the outer wall of the core tube, and the other end is connected to the first support beam.

3. The method for installing a self-climbing boom tower crane according to claim 2, characterized in that: When installing the first oblique support, the flatness error of the upper surface of the first support beam does not exceed 1‰.

4. The method for installing a self-climbing boom tower crane according to claim 1, characterized in that: It also includes installing a second oblique support below the second support beam, wherein one end of the second oblique support is connected to the outer wall of the core tube, and the other end is connected to the second support beam.

5. The method for installing a self-climbing boom tower crane according to claim 4, characterized in that: When installing the second oblique support, the flatness error of the upper surface of the second support beam does not exceed 1‰.

6. The method for installing a self-climbing boom tower crane according to claim 1, characterized in that: When installing the first support beam, the concrete strength of the outer wall of the core tube is not less than 75%.

7. The method for installing a self-climbing boom tower crane according to claim 1, characterized in that: When the first part of the tower is installed, the concrete strength of the outer wall of the core tube reaches 100%.