Crawler crane mounting and dismounting construction method

Abstract

The invention provides a crawler crane assembly and disassembly construction method which comprehensively considers all elements of construction preparation and specific assembly and disassembly processes. Meanwhile, specific processes such as main machine unloading, main variable-amplitude mast pulling-up, crawler belt self-mounting, central counterweight mounting, rear counterweight mounting, super-lift mast mounting, super-lift mast pulling-up, mounting of a main arm with a super-lift mast, vehicle checking and dismounting are planned in detail, it can be ensured that mounting and dismounting construction of the crawler crane can be conducted safely and efficiently, and the construction efficiency is effectively improved; the construction time is shortened, the consumption of manpower and material resources is reduced, and the problems of low efficiency, large potential safety hazards, high technical requirements on operators and the like in a traditional mounting and dismounting method are solved. The method is clear in concept, scientific, rigorous, reasonable and feasible, a brand-new and reliable solution is provided for mounting and dismounting construction of the crawler crane, and development and progress of the building construction industry are promoted.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a crawler crane installation and disassembly construction method. Background Art

[0002] Crawler cranes are widely used in various large-scale projects. The installation and disassembly process of crawler cranes has always been a key link in construction, but there are many problems. Traditional crawler crane installation and disassembly methods are usually cumbersome and require a lot of time and manpower. During the construction process, due to the lack of scientific planning and reasonable process arrangement, the installation and disassembly efficiency is often low, affecting the progress of the project.

[0003] In addition, safety issues are also an important hidden danger in traditional installation and removal methods. The installation and removal process involves the operation of multiple links and multiple equipment, such as main engine unloading, mast raising, crawler installation, counterweight installation, etc. Any mistake in any link may cause a safety accident. Moreover, the conditions of some construction sites are more complicated, such as uneven sites and insufficient bearing capacity of the foundation, which also increases the safety risks in the installation and removal process. At the same time, traditional installation and removal methods have high technical requirements for operators, but some operators may lack sufficient professional knowledge and skills, which makes it easy to make mistakes during the installation and removal process, further increasing safety hazards. In addition, the existing installation and removal methods are also insufficient in cost control. Due to inefficiency and the existence of safety risks, it may lead to an increase in construction costs, including losses caused by equipment damage, maintenance costs, and delays in construction.

[0004] In summary, the traditional crawler crane installation and disassembly methods have many problems in terms of efficiency, safety and cost. A more innovative, safe and efficient installation and disassembly construction method is urgently needed to solve these problems and meet the needs of modern construction. Summary of the invention

[0005] The purpose of the present invention is to provide a crawler crane installation and disassembly construction method to solve the problems existing in the prior art.

[0006] The technical solution adopted to achieve the purpose of the present invention is as follows: a crawler crane installation and disassembly construction method, the crawler crane includes a crane mainframe, a main arm, a luffing mechanism and a lifting mechanism.

[0007] The main machine includes a crawler frame located below the main machine. Legs are arranged below the crawler frame. The main machine is supported by the legs during installation. The platform of the main machine is provided with motorized equipment, hydraulic system, electrical system, cab, central counterweight and rear counterweight. The main machine is also provided with guide rails.

[0008] The lower end of the main arm is hinged on the main machine.

[0009] The luffing mechanism is used to adjust the amplitude of the main boom. The luffing mechanism includes a main luffing mast and a super lifting mast D. The lower end of the main luffing mast is hinged to the main machine, and the upper end is connected to the main boom. The main luffing winch retracts and extends the main luffing mast through a wire rope and a pulley system. When the main luffing mast swings under the action of the main luffing winch, the main boom swings accordingly, so that the amplitude of the main boom can be adjusted. The lower end of the super lifting mast D is hinged to the main machine. The upper end of the main luffing mast is connected to the super lifting mast, and the super lifting winch retracts and extends the boom main boom through a wire rope and a pulley system. An anti-tilt cylinder is arranged behind the super lifting mast D. After the super lifting mast reaches a certain angle, the anti-tilt cylinder contacts the guide rail. When the main boom tilts backward to a certain extent, the support of the anti-tilt cylinder can prevent the super lifting mast from tilting further backward.

[0010] The lifting mechanism is used for lifting and lowering of the hook. A lifting winch is arranged at the lower end of the main arm. The lifting winch is connected to the hook through a wire rope and a pulley system.

[0011] The crawler crane installation and disassembly construction method includes the following steps:

[0012] 1) Host unloading.

[0013] 2)) Raise the main luffing mast.

[0014] 3) Tracks are self-installing.

[0015] 4) Central counterweight installation.

[0016] 5) Rear counterweight installation.

[0017] 6) Installation of super lift mast.

[0018] 7) Raising the super-lift mast.

[0019] 8) Installation of main boom with super lift mast.

[0020] 9) The super-lift mast anti-tilt cylinder is in place.

[0021] 10) Raise the main arm.

[0022] 11) Vehicle inspection.

[0023] 12) Disassembly of crawler crane.

[0024] Furthermore, the superlift mast D is a truss structure, which is connected by a detachable superlift mast lower boom D, a superlift mast middle boom D and a superlift mast upper boom D. In step 6), an auxiliary crane is used to lift the superlift mast lower boom and place it, lift the middle boom and align the pin holes to connect, adjust the main luffing mast angle and lift the superlift mast, connect the hydraulic oil circuit and electrical equipment, release the main luffing winch and connect the pull plate, untie the upper boom pulley block and place the movable pulley block, guide the wire rope and wind it.

[0025] The technical effect of the present invention is unquestionable: it can effectively improve construction efficiency, shorten installation and disassembly time, reduce the consumption of manpower and material resources, overcome the problems of cumbersome, inefficient and potential safety hazards of traditional installation and disassembly methods, further enrich the method system in the field of crane construction technology, and provide technical support and reference for the safe and efficient use of crawler cranes in construction. This method ensures the smooth progress of the installation and disassembly process and reduces safety risks through scientific planning and reasonable process arrangement. It also helps to control construction costs and improve the economic benefits of the project. Its emergence will have a positive impact on the construction industry and promote the development and progress of the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Assemble the flow chart for crawler crane;

[0027] Figure 2 Sample for the legs Figure I ;

[0028] Figure 3 For the foot sample Figure II ; Figure 3 a and 3b are different views;

[0029] Figure 4 This is the general drawing of the set screw;

[0030] Figure 5 It is a schematic diagram of the connection position between the quick connector on the crawler frame and the quick connector on the base;

[0031] Figure 6 This is a schematic diagram of the rear counterweight installation;

[0032] Figure 7 Schematic diagram of a superlift mast.

[0033] In the figure: outrigger cylinder 1, support 2, rotating outrigger 3, pull rod 4, connecting pin 5, locking pin 6, outrigger 7. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the embodiments, but it should not be understood that the above subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various substitutions and changes are made according to the common technical knowledge and customary means in the art, which should all be included in the protection scope of the present invention.

[0035] Embodiment 1:

[0036] This embodiment provides a crawler crane installation and disassembly construction method. The crawler crane includes a crane mainframe, a main arm, a luffing mechanism and a lifting mechanism.

[0037] The main machine includes a crawler frame located below the main machine. Legs are arranged below the crawler frame. The main machine is supported by the legs during installation. The platform of the main machine is provided with motorized equipment, hydraulic system, electrical system, cab, central counterweight and rear counterweight. The main machine is also provided with guide rails.

[0038] The lower end of the main arm is hinged on the main machine.

[0039] The luffing mechanism is used to adjust the amplitude of the main boom. The luffing mechanism includes a main luffing mast and a super lifting mast D. The lower end of the main luffing mast is hinged to the main machine, and the upper end is connected to the main boom. The main luffing winch retracts and extends the main luffing mast through a wire rope and a pulley system. When the main luffing mast swings under the action of the main luffing winch, the main boom swings accordingly, so that the amplitude of the main boom can be adjusted. The super lifting mast D is a truss structure, which is connected by a detachable super lifting mast lower section arm D2, a super lifting mast middle arm D4 and a super lifting mast upper section arm D1. The lower end of the super lifting mast D is hinged to the main machine. The upper end of the main luffing mast is connected to the super lifting mast, and the super lifting winch retracts and extends the boom main boom through a wire rope and a pulley system. An anti-backward tilt oil cylinder is arranged behind the super lifting mast D. After the super lifting mast reaches a certain angle, the anti-backward tilt oil cylinder contacts the guide rail. When the main boom tilts backward to a certain extent, the support of the anti-tilt cylinder can prevent the superlift mast from tilting further backward.

[0040] The lifting mechanism is used for lifting and lowering of the hook. A lifting winch is arranged at the lower end of the main arm. The lifting winch is connected to the hook through a wire rope and a pulley system.

[0041] The crawler crane installation and disassembly construction method includes the following steps:

[0042] 1) Host unloading.

[0043] 2)) Raise the main luffing mast.

[0044] 3) Tracks are self-installing.

[0045] 4) Central counterweight installation.

[0046] 5) Rear counterweight installation.

[0047] 6) Installation of superlift mast. Use auxiliary crane to lift the lower boom of superlift mast and place it, lift the middle boom and align the pin holes to connect, adjust the angle of main luffing mast and lift the superlift mast, connect hydraulic oil circuit and electrical equipment, release the main luffing winch and connect the pull plate, untie the upper boom pulley block and place the movable pulley block, guide the wire rope and wind it.

[0048] 7) Raising the super-lift mast.

[0049] 8) Installation of main boom with super lift mast.

[0050] 9) The super-lift mast anti-tilt cylinder is in place.

[0051] 10) Raise the main arm.

[0052] 11) Vehicle inspection.

[0053] 12) Disassembly of crawler crane.

[0054] Embodiment 2:

[0055] This embodiment provides a crawler crane installation and disassembly construction method, comprising the following steps:

[0056] 1) Unloading the main engine; the specific operation includes unhooking the outrigger cylinder from the support, rotating the outrigger and fixing it, moving the outrigger and fixing it, rotating the cab, starting the engine and adjusting the mode, placing the pad, extending the outrigger cylinder so that the outrigger falls on the pad, driving the trailer away, and keeping the main engine outrigger cylinder in the lifted state (see Figure 2 , Figure 3 and Figure 4 ). The outrigger includes an outrigger oil cylinder 1, a rotating outrigger 3, a support 2, and an outrigger plate 7; the rotating outrigger 3 realizes the folding and storage of the outrigger in the transport state through a hinged structure, and the locking pin 6 fixes the position to reduce the transport size. Unfolding in the working state. The outrigger plate 7 is located at the end of the outrigger to improve stability by increasing the ground contact area. The support 2 is fixed by the pull rod 4, the connecting pin 5, and the position relationship of each component of the outrigger.

[0057] 2) Lift the main luffing mast; start the engine and adjust the speed, lift (lower) the main luffing mast, release the main luffing wire rope and control the angle, remove the fixing plate pin and hang the special wire rope.

[0058] 3) Self-installation of crawler tracks: move the trailer close to the main machine and adjust the position of the self-loading and unloading cylinder, lift the crawler frame and drive away the transport vehicle, lower the crawler tracks and remove the safety chain, install the crawler frame on the other side and connect the hydraulic system quick connector.

[0059] 4) Installation of central counterweight: move the trailer close to the main machine, connect the auxiliary wire rope and lift the central counterweight pallet, transfer and lower the pallet to the installation position, and use the same method to lift the pallet on the other side.

[0060] 5) Rear counterweight installation: Use an auxiliary crane to lift the rear counterweight tray and move it to the installation site, use the pin shaft to hang and install the connecting pin and spring pin pin, install the rear counterweight tray on the other side, lift the rear counterweight block and place it, and install the chain (see Figure 6 ).

[0061] 6) Installation of super-lift mast: Use auxiliary crane to lift the lower boom of super-lift mast and place it, lift the middle boom and align the pin holes to connect, adjust the angle of main luffing mast and lift the super-lift mast, connect hydraulic oil circuit and electrical equipment, release the main luffing winch and connect the pull plate, untie the upper boom pulley block and place the movable pulley block, guide the wire rope and wind it (see Figure 7 ).

[0062] 7) Raise the superlift mast; extend the anti-tilt cylinder to the maximum stroke, reel in the main luffing winch and erect the superlift mast to 70°-75°.

[0063] 8) Installation of the main boom with super-lifting mast; lift the lower boom section of the main boom with a sling and move it to the main platform, connect the boom pin shaft and quick connector, install each boom section, release the main luffing winch and extend the support rod, install the main and auxiliary connecting section pulley blocks, connect the main lifting winch hydraulic pipeline, release the main lifting winch wire rope and connect the hook, and complete the electrical connection.

[0064] 9) The anti-tilt cylinder of the super-lift mast is in place; reel in the super-lift luffing winch wire rope to tighten the pull plate, reel in the main luffing winch wire rope and release the super-lift luffing winch wire rope to adjust the state of the pull plate, move the super-lift mast to the corresponding position so that the anti-tilt cylinder contacts the slideway and stops the main luffing winch action.

[0065] 10) Raising the main boom: Perform various checks before raising the main boom and correct any irregularities.

[0066] 11) Vehicle inspection: perform general technical inspection and no-load test according to drawings and instructions.

[0067] 12) Disassembly of crawler crane: Disassembly should be carried out in the reverse order of assembly.

[0068] Embodiment 3:

[0069] This embodiment provides an auxiliary installation device used in the method described in Embodiment 1 or 2, including a trailer, an auxiliary wire rope, an auxiliary crane, a sling and a main lifting winch.

Claims

1. A crawler crane installation and disassembly construction method, characterized in that: The crawler crane includes a crane mainframe, a main boom, a luffing mechanism and a lifting mechanism; The main machine includes a crawler frame located below the main machine; legs are arranged below the crawler frame; the main machine is supported by the legs during installation; motorized equipment, a hydraulic system, an electrical system, a cab, a central counterweight and a rear counterweight are arranged on the platform of the main machine; guide rails are also arranged on the main machine; The lower end of the main arm is hinged to the main machine; The luffing mechanism is used to adjust the amplitude of the main boom; the luffing mechanism includes a main luffing mast and a super lifting mast (D); the lower end of the main luffing mast is hinged on the main engine, and the upper end is connected to the main boom; the main luffing winch retracts and extends the main luffing mast through a wire rope and a pulley system; when the main luffing mast swings under the action of the main luffing winch, the main boom swings accordingly, so that the amplitude of the main boom can be adjusted; the lower end of the super lifting mast (D) is hinged on the main engine; the upper end of the main luffing mast is connected to the super lifting mast, and the super lifting winch retracts and extends the boom main boom through a wire rope and a pulley system; an anti-tilt cylinder is arranged at the rear of the super lifting mast (D); after the super lifting mast reaches a certain angle, the anti-tilt cylinder contacts the guide rail; when the main boom tilts backward to a certain extent, the super lifting mast can be prevented from further tilting backward by the supporting effect of the anti-tilt cylinder; The lifting mechanism is used for lifting and lowering of the hook; a lifting winch is provided at the lower end of the main arm; the lifting winch is connected to the hook through a wire rope and a pulley system; The crawler crane installation and disassembly construction method includes the following steps: 1) Unloading of the main engine; 2)) Raise the main luffing mast; 3) Track self-installation; 4) Central counterweight installation; 5) Rear counterweight installation; 6) Installation of super lifting mast; 7) Raising of the super mast; 8) Installation of main boom with super lifting mast; 9) The anti-tilt cylinder of the super-lift mast is in place; 10) Raising the main arm; 11) Vehicle inspection; 12) Disassembly of crawler crane.

2. A crawler crane installation and disassembly construction method according to claim 1, characterized in that: The superlift mast (D) is a truss structure, which is connected by a detachable superlift mast lower boom (D2), a superlift mast middle boom (D4) and a superlift mast upper boom (D1); in step 6), an auxiliary crane is used to lift the superlift mast lower boom and place it, the middle boom is lifted and connected by aligning the pin holes, the main variable-length mast angle is adjusted and the superlift mast is lifted, the hydraulic oil circuit and electrical equipment are connected, the main variable-length winch is released and the pull plate is connected, the upper boom pulley block is untied and the movable pulley block is placed, and the wire rope is guided and wound.

3. The crawler crane installation and disassembly construction method according to claim 1, characterized in that: In step 10), perform various checks before raising the main boom and correct any inappropriateness.

4. The crawler crane installation and disassembly construction method according to claim 1, characterized in that: In step 11), perform general technical inspection and no-load test according to the drawings and instructions.

5. The crawler crane installation and disassembly construction method according to claim 1, characterized in that: In step 12), disassembly is performed in the reverse order of assembly.

6. The auxiliary installation device used in the method according to claims 1 to 5, characterized in that: Includes trailer, auxiliary wire rope, auxiliary crane, sling and main hoist winch.

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