CN112429651A - Mounting construction process for 1000-ton lifting frame equipment - Google Patents
Mounting construction process for 1000-ton lifting frame equipment Download PDFInfo
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- CN112429651A CN112429651A CN202011186432.8A CN202011186432A CN112429651A CN 112429651 A CN112429651 A CN 112429651A CN 202011186432 A CN202011186432 A CN 202011186432A CN 112429651 A CN112429651 A CN 112429651A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
- B66C17/06—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports specially adapted for particular purposes, e.g. in foundries, forges; combined with auxiliary apparatus serving particular purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
- B66C17/06—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports specially adapted for particular purposes, e.g. in foundries, forges; combined with auxiliary apparatus serving particular purposes
- B66C17/20—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports specially adapted for particular purposes, e.g. in foundries, forges; combined with auxiliary apparatus serving particular purposes for hoisting or lowering heavy load carriers, e.g. freight containers, railway wagons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
Abstract
The invention relates to the technical field of installation of large-scale special hoisting equipment, and provides an installation construction process for 1000-ton lifting frame equipment, which comprises the following steps: step 1, preparing for installation; step 2, assembling a beam lifting machine; step 3, assembling the beam transporting vehicle; step 4, assembling the bridge girder erection machine; step 5, debugging the complete machine of the lifting and transporting frame equipment; the invention has the beneficial effects that: the diagonal method and the suspension rope method are adopted to avoid the accumulation of the installation error of the steel structure and ensure the safety and reliability of the equipment; the installation site is planned in advance, so that secondary transfer of equipment is avoided, and the installation efficiency is greatly improved; the bridge girder erection machine is lifted and installed by the girder erection machine, so that the use of an automobile crane is reduced, and the installation cost is saved.
Description
Technical Field
The invention relates to the technical field of installation of large special hoisting equipment, in particular to an installation construction process for 1000-ton lifting frame equipment.
Background
At present, the construction of domestic high-speed railway infrastructure develops at a high speed, and with the diversified development of special equipment of a lifting frame of a railway bridge, various large construction enterprises continuously research, innovate and improve the mounting and construction process of the special equipment of the lifting frame according to the actual situation on site, so that the mounting process method of the special equipment of the lifting frame tends to be standardized and rationalized. The traditional installation method mainly aims at the lifting frame equipment with the lifting height of 30 meters or less and the rated lifting capacity of 900 tons or less, generally adopts computer software to plan the equipment installation site, and then adopts total station measurement lofting. But the construction site location of the precast beam field, the height of the pier, the over 900 ton capacity of the novel box beam and other conditions restrict, and the box beam piece is erected by adopting 1000 ton lifting frame special equipment with larger lifting height and lifting capacity in the equipment type selection aspect. The 1000-ton lifting frame equipment can adapt to more complex construction conditions, has the characteristics of longer main beam and higher supporting legs, and has the defects of larger accumulated steel structure installation errors, difficulty in controlling the track sidewise bending and center distance of the main beam and the like in the installation and construction process, and the actual requirements are difficult to meet by adopting the traditional installation method.
Disclosure of Invention
The invention aims to provide an installation construction process for 1000-ton lifting frame equipment, and aims to solve the technical problems that in the prior art, the accumulation of steel structure installation errors is large, and the sidewise bending and center distance of a main beam track are not easy to control in the installation construction process of the 1000-ton lifting frame equipment.
In order to solve the technical problem, the installation and construction process for 1000-ton lifting frame equipment provided by the invention comprises the following steps:
step 1, installation preparation: selecting an installation site, preprocessing the installation site, lofting out an anchor point position and an installation position of each section of equipment in advance, erecting a sleeper buttress at a corresponding position, and embedding a ground anchor at the anchor point position;
step 2, assembling a beam lifting machine: installing a walking track, assembling a support leg structure of a girder lifting machine, arranging a guy rope, assembling a main girder structure, detecting the straightness of the main girder structure section by adopting a diagonal line method and a hanging rope method, assembling a cart walking mechanism and positioning, installing a main girder on the support leg structure, assembling a cross beam, finally installing a hoisting trolley and an electrical system, and completing the whole machine debugging;
step 3, assembling the beam transporting vehicle: assembling a vehicle body, sequentially installing a wheel set, a steering mechanism, a wheel set hydraulic pipeline, an engine room, a hydraulic chamber, an electrical control system, a driver cab and a joist trolley, and completing the debugging of the whole machine;
step 4, assembling a bridge girder erection machine: and a front end cross beam and a rear end cross beam are arranged behind the assembled machine arm, a hoisting trolley, a rear supporting leg and a rear auxiliary supporting leg are arranged to the machine arm, the machine arm is hoisted to the pack frame by using a beam hoisting machine, a middle supporting leg, a front supporting leg and a front auxiliary supporting leg are sequentially arranged to the machine arm, a steel wire rope, a lifting appliance, a lifting rod, an electric system and a hydraulic system are arranged, and the debugging of the whole machine is completed.
And 5, debugging the complete lifting and transporting frame equipment.
Compared with the prior art, the installation and construction process for the 1000-ton lifting frame equipment has the following beneficial effects:
1. each section of box girder of the girder lifting machine main girder structure is installed and retested section by adopting a diagonal line method and a rope suspension method, so that the accumulation of installation errors of a steel structure is effectively avoided, the installation precision requirement of 1000-ton lifting frame equipment can be met, and the safety and reliability of equipment installation are ensured;
2. by planning the installation site, the technical errors of increasing the cost caused by secondary transfer of equipment in the later period due to unreasonable schemes are avoided, the installation workload is reduced, the installation period is saved, and the installation efficiency is greatly improved;
3. the bridge girder erection machine is hoisted and installed by adopting the girder hoisting machine, so that the use of a truck crane is reduced, the use cost of the truck crane is saved, and the installation cost of the whole equipment is reduced;
4. three sets of equipment of carrying frame are planned, unified arrangement simultaneously in the equipment process, have avoided the construction alternately to cause the interact, have ensured installation construction progress and quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are needed in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is an assembly schematic of a beam lifting machine of a 1000 ton lifting frame apparatus according to an embodiment of the present invention;
FIG. 2 is a diagram of anchor point placement in FIG. 1;
fig. 3 is a schematic structural diagram of a bridge girder erection machine of a lifting beam machine of 1000-ton lifting frame equipment in the embodiment of the invention.
Description of reference numerals:
in fig. 1: 10. 1# girder raising machine rigid leg; 11. the legs of the No. 1 girder raising machine are flexible; 12. 2# beam raising machine rigid legs; 13. 2# beam-lifting machine leg-bending; 14. 1# girder machine main girder structure; 15. 2# girder machine main girder structure; 16. a ground anchor; 17. a bridge pier; 18. a truck crane; 19. a running track;
in fig. 3: 20. a front auxiliary leg; 21. a front leg; 22. a horn; 23. a middle support leg; 24. a trolley; 25. a rear leg; 26. and a rear auxiliary leg.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and can include, for example, mechanical and electrical connections; the connection may be direct, indirect or internal, or may be a connection between two elements or an interaction relationship between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings:
the 1000-ton lifting frame equipment is large-scale special equipment which is used after all components are transported to a construction site for assembly and acceptance after being produced by a manufacturer. The lifting frame equipment consists of a supporting system, a walking system, a power system, a hydraulic system, an electrical system and a safety monitoring system. The 1000-ton lifting frame equipment has high lifting height and large lifting weight in the construction process, is installed in a segmented mode and integrally hoisted, is quick in construction progress, and can be suitable for construction under special working conditions that the field of a lifting beam area is limited, and the height of a pier exceeds 30 meters.
The 1000 ton split type carrier consisting of the TLJ500-36 type girder, the YLS1000 type girder transporting vehicle and the JQS1000 type bridge girder erection machine will be described as an example.
The whole set of equipment is provided with two TLJ500-36 type beam lifting machines: the two girder lifting machines lift and lift a girder together to complete the lifting and transferring of the girder in a precast yard and the loading of the girder for a girder transporting vehicle; the beam lifter equipment can also be used for hoisting other objects within the rated hoisting weight in the precast yard to complete tasks which may be helpful to the construction of the precast yard; the power of the beam lifting machine is provided by a 380V/50 Hz three-phase four-wire electrical system, and a power supply mode adopts a cable drum. The YLS1000 type beam-passing vehicle is suitable for transporting 24m, 32m and 40m standard double-line whole-hole concrete prefabricated box beams (1000t grade and below) of a railway passenger dedicated line (connected with bridges and tunnels) at the speed of 250-350 km per hour, and can also carry corresponding bridge erecting machines to realize short-distance transportation between bridges and through double-line tunnels of the passenger dedicated line; the YLS1000 cross-tunnel beam transporting vehicle can transport a box beam, runs to the tail part of a bridge erecting machine in a roadbed, a corresponding standard tunnel or a built bridge floor, completes the erecting work of the box beam by matching with the bridge erecting machine through primary beam feeding and secondary beam feeding, and is matched with an JQS1000 type bridge erecting machine for use. The JQS1000 type tunnel-passing bridge girder erection machine and the YLS1000 type girder transporting vehicle are matched to complete the erection operation of the box girder. The bridge girder erection machine can meet standards of 20m, 24m, 32m and 40m and is suitable for the erection of nonstandard double-line concrete precast box girders (1000-ton grade and below) between 20m and 40m through local transformation, and can erect first and last span girders, curved girders and variable span girders.
The mounting construction process for the 1000-ton lifting frame equipment comprises the following steps:
step 1, installation preparation: selecting an installation site, preprocessing the installation site, lofting out the anchor point position and the installation position of each section of equipment in advance, erecting a sleeper buttress at the corresponding position, and embedding a ground anchor at the anchor point position.
Specifically, in the installation preparation process, the installation site plane plan is created in advance by using computer software, and in the process of creating the installation site plane plan, comprehensive consideration needs to be given to the aspects of technical requirements of an installation site, the approach and placement of each component, the assembly process of each component, attention and the like. Specific considerations include: the device comprises components, a lifting frame, a lifting device, an assembly base, an approach road, an approach arrangement of the components, a component assembly flow, a component section acceptance check and the like, wherein the components are arranged in a certain shape, and the lifting device is arranged on the assembly base.
As shown in fig. 1, in the installation preparation stage, according to the characteristics of longer main beam and higher supporting legs of 1000-ton lifting frame equipment, two 500-ton truck cranes 18 are determined to be matched with 1 lifting machine, and the specific station of the truck crane 18 is determined; the 500 ton truck crane 18 leg uses 2.5 x 1.5m steel plate as a support pad. And (3) reinforcing the installation site foundation, wherein the bearing pressure of the installation site foundation after the reinforcement treatment is not less than 200kpa, and positioning, snapping a line and rechecking are performed on the installation site in advance according to an installation site plane planning diagram.
The foundation of the installation site is reinforced, the construction site is required to be leveled and compacted according to specific requirements, and the bearing pressure after the foundation is reinforced is not less than 200kpa so as to meet the working requirements of hoisting machines. Taking the maximum stress as an example, the 500-ton truck crane 18 has a host weight of 96 tons, a counterweight and accessories of 120 tons, and a maximum lifted material amount of 84.7 tons. The support legs of the truck crane 18 adopt 2.5 x 1.5m steel plate support pads, and the maximum basic bearing capacity is required to be not less than 200Kpa so as to meet the requirements of crane stations, hoisting machines and equipment storage.
As shown in fig. 1 and 2, an anchor point position and an installation position of each section of equipment are set out before an installation site, an earth anchor 16 is embedded in the preset anchor point position, 8 anchor points are preset in the assembly process of the two lifting beam machines, and the anchor points 8 and 5 are respectively arranged at 30000 mm positions outside a rigid leg 10 of the 1# lifting beam machine and a flexible leg 11 of the 1# lifting beam machine; the anchor points 1 and 4 are respectively arranged at 30000 mm positions outside the rigid legs 12 and the flexible legs 13 of the 2# lifting machine; the anchor points 7 and 6 are respectively arranged on the inner side of the track foundation between the rigid leg 10 of the No. 1 lifting beam machine and the flexible leg 11 of the No. 1 lifting beam machine; anchor point 2, anchor point 3 set up respectively in the track basis inboard between 2# bale handle machine rigid leg 12 and 2# bale handle machine gentle leg 13.
The design requirement of the ground anchor is as follows: the anchor concrete blocks at the anchor points 1, 4, 5 and 8 are not less than 8m3The steel bar cage adopts a phi 20 mm steel bar, the diameter of the embedded bars is not less than phi 25 mm, the embedded bars are welded together, and the ends of the embedded bars are made into circular rings and welded together in the steel bar cage. The anchor concrete blocks at the anchor points 2, 3, 6 and 7 are not less than 9.4m3The steel bar cage adopts a phi 20 mm steel bar, the diameter of the embedded bars is not less than phi 25 mm, the embedded bars are welded together, and the ends of the embedded bars are made into circular rings and welded together in the steel bar cage. The earth anchor 16 needs to be checked for firmness.
The method comprises the following steps of (1) erecting a sleeper stack at a corresponding position: the assembling position of the girder lifting machine can be used for placing sleepers with the height of 600 mm and ensuring the level, and necessary preconditions are created for subsequent arch raising and side bending adjustment of main girder structure node installation. And (4) well placing sleeper cushion blocks at corresponding positions of the assembly of the girder transporting vehicle, taking the height of sleepers at two ends to be 1550 mm, and pre-arching the sleepers at the sections of the vehicle body of the girder transporting vehicle. The center distance of the sleeper piles erected by the bridge girder erection machine is 6m, and the height is not less than 600 mm.
Step 2, assembling a beam lifting machine: installing a walking track, assembling a support leg structure of a girder lifting machine, arranging a guy rope, assembling a main girder structure, detecting the straightness of the main girder structure section by adopting a diagonal line method and a hanging rope method, assembling a cart walking mechanism and positioning, installing a main girder on the support leg structure, assembling a cross beam, finally installing a hoisting trolley and an electrical system, and completing the whole machine debugging;
when the running rails 19 are installed, it is necessary to ensure that the two running rails 19 are parallel.
When the support leg structure of the girder lifting machine is assembled, the position of a pier 17 is taken into consideration, after the ground anchor is checked to be firm and correct, a cable wind rope is pulled upwards between the support leg structure and the ground anchor, preferably a steel wire rope with the diameter of 20 mm is used as the cable wind rope, as shown in fig. 1 and 2, 4 cable wind ropes are pulled on the inner sides of two support legs of a rigid leg 10 of the 1# girder lifting machine and a flexible leg 11 of the 1# girder lifting machine, 1 cable wind rope is pulled on the outer sides of the two support legs of the rigid leg 10 of the 1# girder lifting machine and the flexible leg 11 of the 1# girder lifting machine respectively, and 6 cable wind ropes are pulled by the 1# girder lifting machine together; 4 cable wind ropes are respectively pulled and arranged on the inner sides of two support legs, namely a rigid leg 12 of a 2# beam lifting machine and a flexible leg 13 of the 2# beam lifting machine, 1 cable wind rope is respectively pulled and arranged on the outer sides of the two support legs of the rigid leg 12 of the 2# beam lifting machine and the flexible leg 13 of the 2# beam lifting machine, and 6 cable wind ropes are pulled and arranged on the outer sides of the rigid leg 12 of the 2# beam lifting machine and the flexible leg 13 of the 2# beam lifting machine; the supporting leg structures of the two girder lifting machines are jointly pulled to form 12 cable wind ropes, the cable wind ropes on the inner side and the outer side of the supporting leg structures are ensured not to be crossed when the supporting leg structures are pulled, and a 10T hoist is adopted for tensioning to ensure that the supporting leg structures are in a vertical state, so that necessary preconditions are created for subsequent main beam structure installation.
Aiming at the characteristic that the height of the landing leg structure of the beam lifter in 1000-ton lifting frame equipment is higher, a unique cable wind rope pulling method is designed, so that the landing leg structure is ensured to be kept in a vertical state without lateral deviation in the installation process, and the installation precision of the beam lifter is ensured.
When the girder structure of the girder lifting machine is assembled, the girder structure of each girder lifting machine comprises two parallel girders and a crossbeam connected to the end parts of the two girders, the single girder comprises 3 sections of box girders, the box girders of the two girders are synchronously installed from the middle to two sides, the installation of a left section of box girder and a right section of box girder is relatively completed every time, the straightness of the box girders is detected by adopting a diagonal method and a rope hanging method, the installation of the 3 sections of box girders is completed in sequence, the upper camber, the lateral camber and the distortion of the girder are adjusted after the installation of the box girders of the girders, and the consistency of the upper camber of the two girders is ensured. And the installation retest of each section of the girder is carried out by adopting a diagonal method, so that the condition that the girder frame does not have a parallelogram to cause that the crossbeams at the two ends of the girder cannot be installed can be ensured.
Specifically, as shown in fig. 1, the # 1-handle machine main beam structure 14 and the # 2-handle machine main beam structure 15 are disposed at predetermined positions. The location of the truck crane 18 when lifting the main beam structure also takes into account the location of the pier 17.
After the girder structure of the girder lifting machine is installed, the upper camber range is 50-55 mm, the lateral bending is not more than 10 mm, and the distortion is not more than 10 mm.
As shown in fig. 1, the truck crane 18 plans a station and an operation radius in advance according to the plan view of the installation site, and completes the lifting operation of the leg structure and the main beam structure along the planned route and the operation radius. Preferably, the operation radius R1 of the hoisting support leg of the truck crane 18 is 12000 mm, the operation radius R2 of the hoisting main beam structure of the truck crane 18 is 16000 mm, the distance S1 between the station position of the truck crane 18 and the corresponding side traveling track 19 is 10000 mm, and the distance S2 between the gravity center position of the station position of the truck crane 18 and the center position of the support leg after hoisting is 9000 mm. The truck crane 18 can complete the precise installation of the leg structure and the main beam structure according to the preset route and the operation radius. The secondary transfer of the equipment caused by unreasonable installation scheme is avoided, and the installation time and the cost are saved.
When the supporting leg structure is assembled with the main beam structure, the truck crane 18 is used for sequentially lifting two main beams, the crane arm support is swung at a low speed during lifting to adjust the positions of the main beams, so that the main beams and the connecting flanges of the supporting leg structure are aligned, the main beams are descended and are positioned on the supporting leg structure, and connecting bolts are threaded.
Specifically, two 500-ton truck cranes 18 are used to lift a main beam to the left and right legs and then assemble the cross beams at the two ends. And during hoisting, stopping when the lower flange at the end part of the main beam exceeds the height of the upper flange of the installed supporting leg by 200-300 mm, slowly swinging the arm support of the hoisting crane to adjust the direction of the main beam so as to align the main beam and the connecting flange of the supporting leg, finally descending the main beam and supporting on the supporting leg, and threading a connecting bolt. If meeting flange bolt central deviation when great in the installation, the chain block on the adjustable landing leg cable wind rope is along track horizontal swing landing leg to guarantee accurate counterpoint. And rechecking the gantry of the beam lifting machine by using a theodolite to ensure that the deviation of the installation parameters is within a specified range. The interface connection is completed and the bolts are fastened one by a wrench. And (5) removing the tool and the guy rope, and loosening the hook of the two cranes.
And after the trolley and the electrical system of the beam lifting machine are installed, debugging the whole beam lifting machine.
Step 3, assembling the beam transporting vehicle: assembling a vehicle body, sequentially installing a wheel set, a steering mechanism, a wheel set hydraulic pipeline, an engine room, a hydraulic chamber, an electrical control system, a driver cab and a joist trolley, and completing the debugging of the whole machine;
specifically, the girder transporting vehicle body comprises 4 longitudinal sections, each section comprises 3 transverse sections, and the total number of the sections is 12, the 12 sections are respectively connected with the rail beam joint through the cross beam male joint, the vehicle body is sequentially spliced by adopting an automobile crane, the transverse sections in each section are firstly spliced, and then the longitudinal sections are sequentially spliced by 4 sections.
Specifically, two 50T cranes are adopted to splice four longitudinal large sections of the car body in sequence.
Transversely assembling: the male joints of the two cross beams are connected with one small section through a bolt in place, and then the whole body of the two cross beams is connected with the other small section through a bolt. When connection is aligned, coarse alignment is carried out through the bolts of the installation process plates, after coarse alignment, the coarse alignment bolts are screwed down, and then fine alignment is carried out through the positioning pins.
Longitudinally assembling: longitudinally assembling the four large sections in sequence: firstly, supporting the third segment in place; and the section one and the section two, the section three and the section four are longitudinally assembled after being assembled in place. And screwing the coarse alignment bolt and the fine alignment positioning pin according to the principle of coarse alignment first and fine alignment later.
And after assembling is finished, the side bending and the distortion of the vehicle body are adjusted, the side bending allowable deviation is not more than 10 mm, and the distortion allowable deviation is not more than 1 mm/m. And after the integral assembly is finished, inserting a formal heavy-load pin shaft, and assembling a connecting plate and a connecting bolt on the large longitudinal beam after the heavy-load pin shaft is inserted in place.
After the assembly of the body of the girder transporting vehicle is finished, sequentially installing a wheel set, a steering mechanism, a wheel set hydraulic pipeline, an engine room, a hydraulic chamber, an electrical control system, a driver's cab and a girder supporting trolley, and debugging the whole body of the girder transporting vehicle after the assembly is finished;
step 4, assembling a bridge girder erection machine: and a front end cross beam and a rear end cross beam are arranged behind the assembled machine arm, a hoisting trolley, a rear supporting leg and a rear auxiliary supporting leg are arranged to the machine arm, the machine arm is hoisted to the pack frame by using a beam hoisting machine, a middle supporting leg, a front supporting leg and a front auxiliary supporting leg are sequentially arranged to the machine arm, a steel wire rope, a lifting appliance, a lifting rod, an electric system and a hydraulic system are arranged, and the debugging of the whole machine is completed.
As shown in fig. 3, the bridge girder erection machine comprises a machine arm 22, front and rear end cross beams, a crane trolley 24, a front support leg 21, a front auxiliary support leg 20, a middle support leg 23, a rear support leg 25 and a rear auxiliary support leg 26, sleeper stacks are erected on the ground of an installation site according to a predetermined position, left and right sections of the machine arm 22 are assembled and straightened, the straightness of the machine arm is detected after the single-side machine arm is assembled, and the machine arm is connected with the front and rear end cross beams after the straightness is qualified.
After the arms on the two sides of the bridge girder erection machine are assembled, the flatness, diagonal deviation, track side bending and the like of the whole frame of the arm 22 are detected, the jack is adopted to level the arm 22 of the bridge girder erection machine, the connecting bolt is screwed firstly after the arm is qualified, and the connecting bolt is screwed finally after the arm is qualified after the arm is retested.
After the assembly of the machine arm is completed, a hoisting trolley, a rear supporting leg and a rear auxiliary supporting leg are installed to the machine arm, a lifting machine is used for lifting the machine arm to the carrying frame, a middle supporting leg, a front supporting leg and a front auxiliary supporting leg are sequentially installed to the machine arm, a steel wire rope, a lifting appliance, a lifting rod, an electric system and a hydraulic system are installed, and the whole debugging of the bridge girder erection machine is completed.
The bridge girder erection machine is lifted and installed by the girder erection machine, so that the use of a truck crane is reduced, the use cost of the truck crane is saved, and the integral installation cost of equipment is reduced.
And 5, debugging the complete lifting and transporting frame equipment.
Three sets of equipment of carrying frame are planned, unified arrangement simultaneously in the equipment process, have avoided the construction alternately to cause the interact, have ensured installation construction progress and quality.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The mounting construction process for 1000-ton lifting frame equipment is characterized by comprising the following steps of:
step 1, installation preparation: selecting an installation site, preprocessing the installation site, lofting out an anchor point position and an installation position of each section of equipment in advance, erecting a sleeper buttress at a corresponding position, and embedding a ground anchor at the anchor point position;
step 2, assembling a beam lifting machine: installing a walking track, assembling a support leg structure of a girder lifting machine, arranging a guy rope, assembling a main girder structure, detecting the straightness of the main girder structure section by adopting a diagonal line method and a hanging rope method, assembling a cart walking mechanism and positioning, installing a main girder on the support leg structure, assembling a cross beam, finally installing a hoisting trolley and an electrical system, and completing the whole machine debugging;
step 3, assembling the beam transporting vehicle: assembling a vehicle body, sequentially installing a wheel set, a steering mechanism, a wheel set hydraulic pipeline, an engine room, a hydraulic chamber, an electrical control system, a driver cab and a joist trolley, and completing the debugging of the whole machine;
step 4, assembling a bridge girder erection machine: and a front end cross beam and a rear end cross beam are arranged behind the assembled machine arm, a hoisting trolley, a rear supporting leg and a rear auxiliary supporting leg are arranged to the machine arm, the machine arm is hoisted to the pack frame by using a beam hoisting machine, a middle supporting leg, a front supporting leg and a front auxiliary supporting leg are sequentially arranged to the machine arm, a steel wire rope, a lifting appliance, a lifting rod, an electric system and a hydraulic system are arranged, and the debugging of the whole machine is completed.
And 5, debugging the complete lifting and transporting frame equipment.
2. The installation and construction process for a 1000 ton lifting frame apparatus according to claim 1, wherein the installation preparation step comprises: and (3) making an installation site plane planning graph in advance by using computer software, strengthening the installation site foundation, and performing positioning, line snapping and rechecking in advance on the installation site according to the installation site plane planning graph, wherein the bearing pressure of the installation site foundation after strengthening treatment is not less than 200 kpa.
3. The installation and construction process for 1000-ton lifting frame equipment according to claim 2, wherein two 500-ton cranes are determined to be used together to install 1 beam lifting machine according to the installation site plane plan, and 2.5 × 1.5m steel plates are used as support pads at the legs of the 500-ton cranes.
4. The installation and construction process for 1000-ton lifting frame equipment according to claim 1, wherein 8 ground anchors are preset in the assembly process of the two lifting beam machines, 1 ground anchor is arranged on the outer side of a single supporting leg, 1 ground anchor is arranged on the inner side of the single supporting leg, a guy rope is arranged between the supporting leg and the ground anchor in an upward pulling mode, 4 guy ropes are arranged on the inner sides of the two supporting legs in a pulling mode, 1 guy rope is respectively arranged on the outer sides of the two supporting legs in a pulling mode, 12 guy ropes are arranged on the supporting leg structures of the two lifting beam machines in a pulling mode, and the guy ropes on the inner sides and the outer sides of the supporting leg structures are ensured not to be crossed in the pulling mode.
5. The installation and construction process for 1000-ton lifting frame equipment according to claim 1, wherein the main beam structure of a single lifting frame comprises two parallel main beams and cross beams connected to the ends of the two main beams, the single main beam comprises 3 sections of box-type beams, the box-type beams of the two main beams are synchronously installed from the middle to two sides, when the installation of the left and right opposite sections of box-type beams is completed, the straightness of the box-type beams is detected by adopting a diagonal method and a suspension rope method, the installation of the 3 sections of box-type beams is completed in sequence, and after the installation of the box-type beams of the main beams, the upper camber, the lateral camber and the twist of the main beams are adjusted, so that the upper camber of the two main beams is consistent.
6. The mounting construction process for the 1000-ton lifting frame equipment according to claim 5, wherein after the main girder structure of the girder lifting machine is mounted, the upper camber ranges from 50 mm to 55 mm, the side bending does not exceed 10 mm, and the distortion does not exceed 10 mm.
7. The installation and construction process for 1000-ton lifting frame equipment according to claim 1, wherein after the assembly of the support leg structure and the main beam structure of the lifting machine is completed, the gantry of the lifting machine is rechecked by a theodolite.
8. The installation and construction process for 1000-ton lifting frame equipment according to claim 1, wherein the girder transporting vehicle body comprises 4 longitudinal sections, each section comprises 3 transverse sections, and 12 sections are respectively connected through a transverse beam male joint and a track beam joint, the vehicle body is sequentially spliced by adopting a truck crane, the transverse 3 sections in each section are firstly spliced, and then the longitudinal 4 sections are sequentially spliced.
9. The installation and construction process for the 1000-ton lifting frame device according to claim 1, wherein after the assembly of the body of the girder transporting vehicle is completed, the side bending and twisting of the body are adjusted, the allowable deviation of the side bending is not more than 10 mm, and the allowable deviation of the twisting is not more than 1 mm/m.
10. The installation and construction process for 1000-ton lifting frame equipment according to claim 1, wherein after the single-side arm of the bridge girder erection machine is assembled, the straightness of the arm is detected, the front and rear end beams are connected after the assembly is qualified, after the two-side arms are assembled, the straightness, the diagonal deviation and the track side bending of the whole frame of the arm are detected, and the bridge girder erection machine is leveled by using a jack.
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