CN109183618B - Bridge girder erection machine for rapid construction of prefabricated bridge - Google Patents
Bridge girder erection machine for rapid construction of prefabricated bridge Download PDFInfo
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- CN109183618B CN109183618B CN201710523926.2A CN201710523926A CN109183618B CN 109183618 B CN109183618 B CN 109183618B CN 201710523926 A CN201710523926 A CN 201710523926A CN 109183618 B CN109183618 B CN 109183618B
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- 238000010276 construction Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 230000004323 axial length Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 210000001364 upper extremity Anatomy 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention relates to the technical field of bridge construction, in particular to a bridge girder erection machine for rapid construction of prefabricated bridge girders. The device comprises a main truss, a rear supporting point and a front supporting point; the main truss is provided with an overhead crane for hoisting the prefabricated pier column, the prefabricated bent cap and the steel main beam; the rear supporting point comprises a rear supporting leg arranged at the rear end of the main truss and a middle and rear supporting leg positioned in front of the rear supporting leg; the upper ends of the middle and rear supporting legs are fixed on the main truss, the lower ends of the middle and rear supporting legs are provided with rolling structures capable of driving the middle and rear supporting legs to travel along the assembled bridge deck, and the front supporting point comprises a front supporting leg and a leveling structure which is placed on the ground below the front end of the main truss; the front support leg is a vertical supporting structure with the lower end supported on the leveling structure, and the upper end of the front support leg is fixed at the lower part of the front end of the main truss. The invention can complete the installation of all components such as the prefabricated pier column, the prefabricated bent cap, the steel main beam and the like, realizes the simultaneous construction of the upper and lower structures of the bridge, and effectively improves the construction efficiency on site.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a bridge girder erection machine for rapid construction of prefabricated bridge girders.
Background
In the bridge construction field, the prefabricated bridge can effectively improve the site construction speed, ensure the quality of structural members, improve the structural durability and have wide application range and prospect.
In the field construction of prefabricated bridge, a bridge girder erection machine is generally adopted to erect an upper structure, a crawler crane is adopted to erect a pier column, a capping beam and other lower structures, a large amount of manual assistance is needed in the construction process, the construction efficiency is low, and the influence on the existing traffic is large. The bridge upper structure and the lower pier column usually need to be constructed twice, so that the construction efficiency of the bridge is seriously restricted, the engineering quantity is huge, and a large amount of manpower and material resources are consumed, so that the bridge construction cost is greatly increased. And the lower pier stud is very difficult to build under the condition of severe regional environments.
Disclosure of Invention
The invention aims to solve the problems of low bridging efficiency and low integration degree in the prior art in the background art, and provides a bridge girder erection machine for rapid construction of prefabricated bridge girders.
The technical scheme of the invention is as follows: a bridge girder erection machine for rapid construction of prefabricated bridge girders comprises a main girder, a rear supporting point positioned at the rear half part of the main girder and a front supporting point positioned at the front half part of the main girder; the main truss is provided with an overhead crane for hoisting the prefabricated pier column, the prefabricated bent cap and the steel main girder; the rear supporting point comprises a rear supporting leg arranged at the rear end of the main truss and a middle rear supporting leg positioned in front of the rear supporting leg; the upper end of the middle and rear supporting legs is fixed on the main truss, and the lower end of the middle and rear supporting legs is provided with a rolling structure capable of driving the middle and rear supporting legs to travel along the assembled bridge deck, and the rolling structure is characterized in that: the front supporting point comprises a front supporting leg positioned at the lower part of the front end of the main truss; the front support leg is a vertical support structure with the upper end connected with the main truss and the lower end supported on the ground below the front end of the main truss.
The front supporting point further comprises a supporting seat which is placed on the ground below the front end of the main truss; the supporting seat is of a block-shaped structure with a small upper part and a large lower part and a horizontal upper end face; the lower end of the front landing leg is supported on the upper end face of the supporting seat.
The front support leg further comprises a fixed sleeve fixed at the lower part of the front end of the main truss and a movable sleeve with the lower end placed on the supporting seat; the first jacking oil cylinders are vertically arranged on the end face of the outer side of the circumference of the movable sleeve; the pushing end of the first jacking cylinder is fixed on the end face of the outer side of the circumference of the fixed sleeve; the lower end of the fixed sleeve is sleeved at the upper end of the movable sleeve, and a plurality of groups of through holes which are arranged at intervals along the vertical direction are formed in the overlapped part of the fixed sleeve; the through holes are internally penetrated with bolts.
The lower end of the movable sleeve is further provided with a spherical hinge support; the spherical hinge support comprises a spherical crown fixed at the lower end of the movable sleeve and a bottom plate provided with a spherical groove corresponding to the spherical crown; the spherical crown can be hinged in the spherical groove in a rotating way around the spherical center.
The front supporting point further comprises a middle front supporting leg positioned between the middle rear supporting leg and the front supporting leg; the middle front supporting leg is a vertical supporting structure with the upper end connected with the main truss in a sliding way and the lower end anchored on the prefabricated capping beam.
The middle front support leg further comprises a cross beam horizontally and transversely arranged, two groups of roller groups arranged on the cross beam at intervals along the transverse direction, and vertical support rods positioned at two ends of the cross beam; a transverse pushing structure is arranged between the two groups of roller groups; the upper ends of the supporting rods are fixed on the cross beam, the lower ends of the supporting rods are arranged on anchor rods used for being fixed with the prefabricated capping beams, and a cross brace is arranged between the two supporting rods.
The roller group further comprises a sliding base sleeved on the cross beam; the transverse pushing structure comprises a transverse pushing oil cylinder and a limiting rod which are positioned between the two groups of sliding bases; the shell of the transverse pushing oil cylinder is fixed on the cross beam, and the pushing end is fixed on a group of sliding bases; the limiting rod is a telescopic rod with two ends respectively hinged to the two groups of sliding bases and the axial length of the telescopic rod can be changed.
The middle and rear support legs further comprise short cross beams fixed at the lower parts of the two lateral sides of the main truss, connecting beams vertically arranged and lateral support beams with two ends fixedly connected with the lower ends of the two connecting beams; the short cross beams are horizontally and transversely arranged, and a gap for the crane slings to pass through is reserved between the two short cross beams; the two connecting beams are horizontally and transversely arranged at intervals, and the upper end and the lower end of the two connecting beams are fixedly connected with the short cross beam and the supporting beam respectively to form a hollow annular structure with the short cross beam and the supporting beam.
The rolling structure further comprises a base fixed at the lower part of the supporting beam and a walking roller arranged on the base; the base is provided with a second jacking cylinder which is vertically arranged; the walking roller is connected to the track laid on the bridge deck in a rolling way.
The crown block further comprises a front crown block, a rear crown block and a secondary crown block, wherein the front crown block and the rear crown block are used for cooperatively carrying the prefabricated pier stud and the steel girder, and the secondary crown block is used for carrying the supporting seat.
The invention has the advantages that: 1. the front support legs and the prefabricated matched support seats are arranged, so that the front support legs can be supported on the ground, the front support legs do not need to be supported on pier studs or cap beams, the pier studs do not need to be poured and constructed before bridge decks are paved, the pier studs, the cap beams and the bridge decks can be quickly assembled in a one-time mode, and the bridge construction efficiency is greatly improved;
2. the length of the front supporting leg can be quickly changed by arranging the jacking oil cylinder on the front supporting leg, so that the front supporting leg is suitable for various terrains, the difficulty in moving and supporting the bridge girder erection machine is reduced, and the construction efficiency is improved;
3. the spherical hinge support is arranged at the lower end of the front landing leg, so that the front landing leg can adapt to the slope change of the terrain in a small range, the stability of the front landing leg support is improved, and the problem of possible slippage is solved;
4. the middle and front support legs are arranged, so that the bridge girder erection machine can be kept to have good stability in the process of moving the bridge girder erection machine, shaking in the process of moving the main girder is avoided, and the construction safety is enhanced;
5. the transverse pushing structure is arranged on the middle front supporting leg, so that the transverse distance between the two groups of sliding bases is changed, the gravity center position of the middle front supporting leg is adjusted in a small range, and the gravity center of the main truss is adjusted, so that the main truss can be more stably fixed on the prefabricated capping beam;
6. through the arrangement of the middle and rear supporting legs, the forward movement of the whole bridge girder erection machine is realized, the moving process is simple and efficient, and the difficulty of span moving of the bridge girder erection machine is reduced;
7. the middle and rear supporting legs are designed into the O-shaped beams with the upper ends open, so that a traveling space is reserved for supporting and transporting the pier stud, the capping beam or the bridge deck, and the lifting traveling route is positioned between the two connecting beams, so that the stability is better, and the overturning danger in the lifting process can be effectively avoided;
8. through set up jacking cylinder and walking gyro wheel cooperation on well back landing leg, can be quick change the fixed connection of well back landing leg and bridge floor into roll connection, realize bridge crane and remove with fixed between quick switch, improved the efficiency that the bridge was assembled.
The invention can complete the installation of all components such as the prefabricated pier column, the prefabricated bent cap, the steel girder, the bridge deck slab and the like, realizes the simultaneous construction of the upper and lower structures of the bridge, effectively improves the construction efficiency of the site, reduces the investment of site labor in the whole construction process, has small influence on the existing traffic, has good economic benefit, and avoids the possible interference influence caused by the supporting legs during the transportation of the pier column, the bent cap or the bridge deck slab and the middle and rear supporting legs.
Drawings
Fig. 1: the bridge girder erection machine is schematically shown in the arrangement structure;
fig. 2: the invention is shown in view A-A in FIG. 1;
fig. 3: the invention is shown in view B-B in FIG. 1;
fig. 4: the C-C view of FIG. 1 of the present invention;
fig. 5: the front landing leg structure of the invention is schematic (transverse bridge view);
fig. 6: the D-D view of FIG. 1 of the present invention;
fig. 7: front view of front leg of the invention;
fig. 8: the roller seat mounting structure of the front landing leg is schematically shown (forward bridge direction);
fig. 9: the roller seat mounting structure of the front landing leg is schematically shown (transverse bridge direction);
fig. 10: the spherical hinge support at the lower end of the front landing leg is connected with the supporting seat through a schematic diagram;
fig. 11: a beam transporting vehicle is arranged along the assembled bridge deck travelling structure schematic diagram;
fig. 12: lifting a prefabricated pier column structure schematic diagram;
fig. 13: lifting a structural schematic diagram of the steel girder;
fig. 14: a structural schematic diagram of a lifting bridge deck;
fig. 15: lifting a prefabricated bent cap structure schematic diagram;
fig. 16: a main truss structure diagram for adjusting the gravity center position;
fig. 17: the middle front supporting leg moves to a structural diagram above the 3# bearing platform;
fig. 18: the bridge girder erection machine moves along the bridge direction to form a cross structure schematic diagram;
fig. 19: a schematic diagram of a structure of a lifting supporting seat of the auxiliary crown block;
fig. 20: a schematic structure that the front supporting leg is supported on the supporting seat;
wherein: 1-a main truss; 2-front legs; 2.1-fixing the sleeve; 2.2-a movable sleeve; 2.3-jacking oil cylinder; 2.4-a supporting seat; 2.5-spherical cap; 2.6-a bottom plate; 2.7-through holes; 2.8—a horizontal beam; 2.9-corbels; 2.10-ear panels; 2.11-cross connection; 2.12-a roller seat; 2.13-a roller; 2.14-a motor; 2.15-sliding rails; 2.16-connecting plates; 3-middle front leg; 3.1-a cross beam; 3.2-roller set; 3.3-supporting rods; 3.4-anchor rod; 3.5-cross braces; 3.6-a sliding base; 3.7-a transverse pushing cylinder; 3.8-a limit rod; 4-middle and rear legs; 4.1—short cross beams; 4.2-connecting beams; 4.3-supporting beams; 4.4-a base; 4.5-walking rollers; 4.6-a second jacking cylinder; 4.7-track; 5-rear legs; 6-a front crown block; 7-a rear crown block; 8-an auxiliary crown block; 9-prefabricating pier columns; 10-prefabricating a bent cap; 11-a steel girder; 12-a gantry crane; 13-beam transporting vehicle.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
The bridge girder erection machine according to the embodiment of fig. 1 to 20 comprises a main girder 1, wherein the main girder 1 is a girder structure arranged along the forward direction of the bridge, the main girder 1 comprises longitudinal girders arranged along the forward direction of the bridge and triangular girders positioned at two lateral sides of the lower end of the longitudinal girders, the two groups of triangular girders are arranged at intervals along the transverse direction of the bridge, and a gap for allowing a crane sling to pass through is reserved in the middle.
The present embodiment is supported on the assembled deck by a plurality of fulcrums, including a front fulcrum located at the front half of the main truss 1 and a rear fulcrum located at the rear half (the front of the present embodiment refers to the right direction in fig. 11, the rear refers to the left direction in fig. 11, the forward direction refers to the left-right direction in fig. 11, and the lateral direction refers to the direction perpendicular to the drawing), and the front fulcrum of the present embodiment includes a front leg 2 located at the front end of the main truss 1 and a middle front leg 3 located on the main truss 1, and the rear fulcrum includes a rear leg 5 located at the rear end of the main truss 1 and a middle rear leg 4 located in front of the rear leg 5. In practice, a plurality of legs may be provided for supporting the main truss 1, as long as the function of the present embodiment can be achieved.
As shown in fig. 6 to 10, the front supporting leg 2 in this embodiment is a vertical supporting structure with an upper end connected to a lower portion of a front end of the main truss 1 and a lower end supported on the ground, unlike the prior art, in which the front supporting leg needs to be supported on a capping beam or a pier, the front supporting leg in this embodiment is directly supported on the ground without pouring the pier in advance.
In order to make the lower end support of the front support leg 2 more stable, the present embodiment is provided with a leveling structure at the lower end of the front support leg 2. As shown in fig. 6 to 7, the leveling structure of the present embodiment includes a supporting seat 2.4, where the supporting seat 2.4 is a block structure with a horizontal upper end surface, and the lower end of the front supporting leg 2 is supported on the upper end surface of the supporting seat 2.4.
The front supporting leg 2 of the embodiment is of a portal structure and comprises horizontal beams 2.8 which are arranged along the transverse bridge direction, vertical supporting systems with adjustable heights are arranged at two ends of the horizontal beams 2.8 in the transverse bridge direction, and the lower ends of the vertical supporting systems are supported on the upper end faces of the supporting seats 2.4. The main truss 1 is provided with a subsidiary crown block 8 for carrying the supporting seat 2.4
The vertical support system comprises a fixed sleeve 2.1 fixed at two ends of a horizontal beam 2.8 in the transverse direction and a movable sleeve 2.2 sleeved at the lower end of the fixed sleeve 2.1, wherein the fixed sleeve 2.1 and the movable sleeve 2.2 are coaxially arranged, a plurality of through holes 2.7 which are vertically arranged at intervals are formed in the sleeved overlapping part of the fixed sleeve 2.1 and the movable sleeve 2.2, and the fixed sleeve 2.1 and the movable sleeve 2.2 are fixed together through bolts which penetrate through the through holes 2.7. When the adjustable front support is used, the length of the overlapped part of the fixed sleeve 2.1 and the movable sleeve 2.2 is adjusted, and the vertical length of the front support leg 2 is adjusted, so that the front support leg 2 is suitable for the ground with different heights.
In addition, a vertical first oil cylinder 2.3 is arranged on the circumferential outer side surface of the movable sleeve 2.2, a shell of the first jacking oil cylinder 2.3 is fixed on the circumferential outer side end surface of the movable sleeve 2.2, and the pushing end is fixedly connected with a bracket 2.9 on the circumferential outer side end surface of the fixed sleeve 2.1. The movable sleeve 2.2 is lifted by driving the first lifting cylinder 2.3, so that the adjusting process is more convenient.
The length of the first jacking cylinder 2.3 of the present embodiment, which is used for adjusting the fixed sleeve 2.1 and the movable sleeve 2.2, is actually a small-range adjusting manner, and in order to better adapt to the region with larger elevation change, the present embodiment designs the movable sleeve 2.2 into a plurality of segments. As shown in fig. 6 to 7, the movable sleeve 2.2 is a cylindrical structure formed by connecting a plurality of segments end to end, the segments are cylindrical structures with ear plates 2.10 arranged at the axial ends, screw holes are formed in the ear plates 2.10, and adjacent segments are fixed together through the screw holes by bolts. According to the elevation of the use region, the movable sleeves 2.2 with different sections are selected to adapt to the fluctuation of the use region.
Wherein, the lower end of the section of the movable sleeve 2.2 at the lowest part is provided with a spherical hinge support, the spherical hinge support comprises a spherical crown 2.5 fixed at the lower end of the movable sleeve 2.2 and a bottom plate 2.6 provided with a spherical groove corresponding to the spherical crown 2.5, the spherical crown 2.5 is hinged in the spherical groove in a manner of rotating around a spherical center, and the bottom plate 2.6 is supported on a supporting seat 2.4 as shown in fig. 10. The spherical hinge support can adapt to the inclination of the support seat 2.4, so that the support of the front support leg 2 is more stable.
In order to further enhance the stability of the whole structure, in this embodiment, a cross 2.11 is arranged between two fixing sleeves 2.1, and the cross 2.11 is a truss structure with two ends of a cross bridge fixed on brackets 2.9 and the upper end fixed at the lower end of a horizontal beam 2.8.
The upper end of the front leg 2 is slidably connected to the main truss 1, and in use, the position can be adjusted to form the best support. The sliding structure of this embodiment is shown in fig. 8 to 9, a roller seat 2.12 is disposed between the horizontal beam 2.8 and the main truss 1, the lower end of the roller seat 2.12 is fixed on the horizontal beam 2.8, the upper end is provided with a roller 2.13 and a motor 2.14 for driving the roller 2.13 to travel along the length direction of the main truss 1, the main truss 1 is provided with a sliding rail 2.15 disposed along the horizontal longitudinal direction, and the roller 2.13 is slidably connected to the sliding rail 2.15.
The lower end of the roller seat 2.12 is provided with a connecting plate 2.16, and the connecting plate 2.16 is of a U-shaped structure arranged between the roller seat 2.12 and the horizontal beam 2.8 and comprises a lower flange fixed with the horizontal beam 2.8, an upper flange connected with the main truss 1 through bolts after the roller seat 2.12 moves in place and a web plate for connecting the upper flange and the lower flange. The connecting plate 2.16 and the main truss 1 are fixed together through the bolt structure, and the connecting plate and the main truss can be locked together after the position of the front supporting leg 2 is adjusted, so that shaking is avoided in the using process.
When the bridge girder erection machine is used, the movable sleeve 2.2 is assembled by using a plurality of sections with relative quantity through corresponding elevations according to the using region of the bridge girder erection machine, the movable sleeve 2.2 is fixed on the fixed sleeve 2.1 through the bolts, and then the main truss 1 is hoisted to the assembled bridge deck through the gantry crane, so that the bridge girder erection machine is erected.
The position of the supporting seat 2.4 is adjusted through the auxiliary crown block 3, the motor 2.14 drives the front supporting leg 2 to be positioned on the main truss 1, the lower end of the front supporting leg 2 corresponds to the supporting seat 2.4, the first jacking cylinder 2.3 is adjusted, the vertical height of the front supporting leg 2 is accurately adjusted, and the lower end of the front supporting leg 2 is placed on the upper end face of the supporting seat 2.4.
When the bridge girder erection machine needs to move and stride, the movable sleeve 2.2 is lifted by driving the first jacking cylinder 2.3 so as to be separated from the supporting seat 2.4, and after the movement and stride is completed, the auxiliary crown block 3 lifts the supporting seat 2.4 to the lower part of the front supporting leg 2 after moving in place, and the position of the front supporting leg 2 is adjusted so as to be supported on the supporting seat 2.4 again.
As shown in fig. 4 to 5, the middle front support leg 3 of the present embodiment is schematically shown, the middle front support leg 3 is supported on the prefabricated capping beam 10, and the middle front support leg 3 is a vertical support structure with an upper end slidably connected to the main truss 1 and a lower end anchored on the prefabricated capping beam 10. The middle front supporting leg 3 comprises a cross beam 3.1 which is horizontally and transversely arranged, two groups of roller groups 3.2 which are arranged on the cross beam 3.1 at intervals along the transverse direction, and vertical supporting rods 3.3 which are positioned at two ends of the cross beam 3.1, wherein a transverse pushing structure is arranged between the two groups of roller groups 3.2. The upper ends of the supporting rods 3.3 are fixed on the cross beam 3.1, the lower ends of the supporting rods are arranged on anchor rods 3.4 which are used for being fixed with the prefabricated capping beam 10, and a cross brace 3.5 is arranged between the two supporting rods 3.3. The support bar 3.3 of this embodiment is structurally similar to the telescopic structure of the movable sleeve and the fixed sleeve in the front leg 2, and can vertically adjust the height of the entire leg. The roller group 3.2 is driven by a driving device to slide along the main truss 1, so that the position of the middle and front supporting legs 3 is adjusted.
The roller group 3.2 comprises sliding bases 3.6 sleeved on the cross beam 3.1, the transverse pushing structure comprises a transverse pushing oil cylinder 3.7 and a limiting rod 3.8 which are positioned between the two groups of sliding bases 3.6, a shell of the transverse pushing oil cylinder 3.7 is fixed on the cross beam 3.1, a pushing end is fixed on one group of sliding bases 3.6, and the limiting rod 3.8 is a telescopic rod with two ends connected to the two groups of sliding bases 3.6 in a hinged mode and the axial length of the telescopic rod can be changed. The distance between the two groups of sliding bases 3.6 is changed by pushing the transverse pushing oil cylinder 3.7, so that the gravity center position of the whole main truss 1 can be adjusted, the change of the anchoring position of the lower end is adapted, and the stability of the main truss 1 can be kept by adjusting the gravity center position when the gradient occurs.
The lower extreme of bracing piece 3.3 also is provided with spherical hinge support, can adapt to the slope adjustment in a small range, and bracing piece 3.3 needs to anchor on prefabricated bent cap 10, therefore the lower extreme is provided with stock 3.4, through stock 3.4 anchor on prefabricated bent cap 10.
As shown in fig. 3, a schematic structural diagram of a middle and rear leg 4 in this embodiment is shown, the middle and rear leg 4 is a driving power device of a main truss 1 in this embodiment, the middle and rear leg 4 includes a short beam 4.1 fixed at the lower parts of two lateral sides of the main truss 1, a connecting beam 4.2 arranged vertically, and a lateral support beam 4.3 with two ends fixedly connected with the lower ends of the two connecting beams 4.2, the short beam 4.1 is arranged horizontally, a gap for passing an overhead crane sling is left between the two short beams 4.1, the two connecting beams 4.2 are arranged horizontally at intervals, and the upper and lower ends of the two connecting beams are fixedly connected with the short beam 4.1 and the support beam 4.3 respectively to form a hollow annular structure with the short beam 4.1 and the short support beam 4.3. The annular hollow structure is convenient for lifting the prefabricated pier column 8, the prefabricated capping beam 10 and the steel main beam 11, and has enough passing space.
The support beam 4.3 lower part is provided with two sets of bases 4.4, and two sets of bases 4.4 are arranged along horizontal interval, are provided with walking gyro wheel 4.5 on the base 4.4, still are provided with along vertical arrangement's second lift cylinder 4.6 on the base 4.4, and walking gyro wheel 4.5 roll connection is on laying on the track 4.7 on the bridge floor. When the bridge girder erection machine is used, in the lifting process of the bridge girder erection machine, the second jacking cylinder 4.6 is vertically jacked to enable the jacking end of the second jacking cylinder to be supported on the bridge deck, and the walking roller 4.5 is separated from the track 4.7. When the bridge girder erection machine needs to travel and move, the second jacking oil cylinder 4.6 is unloaded, the traveling roller 4.5 is located on the track 4.7, and the traveling roller 4.5 is driven to travel along the track 4.7, so that the bridge girder erection machine is moved and spanned.
The middle and rear supporting legs 4 are standard supporting legs of the embodiment, namely, the length of the middle and rear supporting legs 4 determines the erection height of the whole bridge girder erection machine, and other supporting legs are adjusted and adapted according to the length of the middle and rear supporting legs 4. The upper ends of the middle and rear supporting legs 4 are fixed on the main truss 1 and cannot move, and position adjustment is not needed.
As shown in fig. 2, the structure of the rear supporting leg 5 in this embodiment is schematically shown, the rear supporting leg 5 is a vertical supporting structure supported at the tail of the main truss 1, the structure of the rear supporting leg 5 is similar to that of the middle front supporting leg 3, and the rear supporting leg 5 is supported on the assembled bridge deck, and the flatness can be ensured because the rear supporting leg 5 is supported on the bridge deck, the lower end of the rear supporting leg 5 is not provided with a spherical hinge support, and the upper end of the rear supporting leg 5 is also provided with a roller structure, so that the position adjustment on the main truss 1 can be realized. When the bridge girder erection machine is lifted, the rear supporting leg 5 is fixed on the main truss 1, and when position adjustment is needed, the fixed connection of the bolts is released, and the rear supporting leg 5 is driven by the driving device to move along the forward bridge.
In order to meet special lifting demands, the bridge girder erection machine of the embodiment is provided with two groups of lifting crown blocks on the main truss 1, including a front crown block 6 and a rear crown block 7 for cooperatively carrying the prefabricated pier column 9 and the steel girder 11, and in addition, in actual use, the supporting seat 2.4 needs a special lifting crown block, so the embodiment is further provided with a secondary crown block 8 for carrying the supporting seat 2.4 on the main truss 1. The auxiliary crown block 8, the front crown block 6 and the rear crown block 7 are arranged at intervals from front to back along the length direction of the main truss 1.
The method comprises the following steps of:
1) The bridge girder erection machine is built on the assembled bridge deck, the bridge girder erection machine is lifted to the assembled bridge deck through a gantry crane 12, after being lifted in place, the lower end of a front supporting leg 2 is supported on a supporting seat 2.4, the upper end of the front supporting leg 2 is fixedly connected to the front end of a main truss 1 through bolts, a spherical hinge support seat at the lower end of a middle front supporting leg 3 is supported on a cover beam at the front end of the front, the middle front supporting leg 3 is anchored on a prefabricated cover beam through a bolt 3.4 (as in fig. 11 and positioned above a 2# bearing platform), a roller group 3.2 is fixed on the main truss 1 through a bolt structure, a second lifting cylinder 4.6 is vertically lifted to enable a walking roller 4.5 to be separated from a track 4.7, the upper end of a rear supporting leg 5 is fixed at the tail part of the main truss 1, and the lower end is supported on the bridge deck through cylinder driving adjustment length, so that the bridge girder erection is completed, as shown in fig. 11;
2) The beam transporting vehicle 13 transports the prefabricated pier column 9 to the lower part of the main truss along the assembled bridge deck, as shown in fig. 12, in order to save space, the prefabricated pier column 9 is dumped to be in a horizontal state for transportation, the front crown block 6 is used for hoisting the front end part of the prefabricated pier column 9, the rear crown block 7 is used for hoisting the side part of the prefabricated pier column 9 close to the rear end, the two crown blocks are synchronously driven to drive the prefabricated pier column 9 to travel to a bearing platform (such as a 3# bearing platform in fig. 12), after the two crown blocks move in place, the rear crown block 7 slowly descends a sling to enable the prefabricated pier column 9 to be slowly adjusted to be in a vertical state until all weight is transferred to the front crown block 6, the front crown block 6 slowly descends to the bearing platform, and grouting is used for connecting the two crown blocks into a whole;
3) The girder transporting vehicle 13 transports the steel girder 11 to the lower part of the main truss 1 along the assembled bridge deck, as shown in fig. 13, the front and rear crown blocks hoist the steel girder 11 to the space between the middle rear supporting leg 4 and the middle front supporting leg 3, the steel girder 11 is lowered to enable the two ends of the steel girder to be respectively seated on the assembled bridge front end prefabricated capping beam (such as the prefabricated capping beam right above the 1# bearing platform in fig. 13) and the prefabricated capping beam at the lower end of the middle front supporting leg (such as the prefabricated capping beam right above the 2# bearing platform in fig. 13), and the bridge deck is erected, as shown in fig. 14, and after the fixed connection, the installation of the bridge span section is completed;
4) The beam transporting vehicle 13 transports the prefabricated capping beam 10 to the lower part of the main truss 1 along the assembled bridge deck, as shown in fig. 15, the front crown block 6 lifts the prefabricated capping beam 10 to travel onto a prefabricated pier column (such as the prefabricated pier column on the 3# bearing platform in fig. 15) positioned in front of the prefabricated pier column at the lower end of the middle front supporting leg, the prefabricated capping beam 10 is rotated by 90 degrees through the adjustment of the front crown block 6, and then the prefabricated capping beam 10 is lowered onto the prefabricated pier column 9;
5) The front crown block 6 and the rear crown block 7 travel to the vicinity of the rear supporting leg 5, the auxiliary crown block 8 travels to the vicinity of the front supporting leg 2, as shown in fig. 16, most of the weight of the main truss 1 is transferred to the rear half part of the main truss 1, the bolt fixed connection of the upper end of the middle front supporting leg 3 and the main truss 1 is released, the lower end of the middle front supporting leg 3 and the anchoring connection of the prefabricated capping beam 10 (the prefabricated capping beam on the 2# bearing platform in fig. 16) are released, the middle front supporting leg 3 is driven to move onto the prefabricated capping beam (the prefabricated capping beam on the 3# bearing platform in fig. 17) positioned in front of the prefabricated capping beam, and the lower end of the middle front supporting leg 3 and the prefabricated capping beam 10 below are anchored and connected as shown in fig. 17;
6) The front crown block 6 and the rear crown block 7 are moved between the middle front supporting leg 3 and the middle rear supporting leg 4, the second jacking cylinder 4.6 on the middle rear supporting leg 4 is unloaded to enable the walking roller 4.5 to be supported on the bridge deck track 4.7, the front supporting leg 2 is lifted to be separated from the supporting seat 2.4, the rear supporting leg 5 is lifted to be separated from the bridge deck, the middle rear supporting leg 4 is driven to drive the main truss 1 to move along the bridge direction for one span, as shown in fig. 18, the second jacking cylinder 4.6 is driven to enable the walking roller 4.5 to be separated from the bridge deck track 4.7, the middle rear supporting leg 4 is supported on the bridge deck, the length of the rear supporting leg 5 is adjusted to enable the rear supporting leg 5 to be supported on the bridge deck again, the upper end of the middle front supporting leg 3 is fixed on the main truss 1 again, the auxiliary crown block 8 is lifted to be lifted below the supporting seat 2.4 to the front supporting leg 6, as shown in fig. 19, the bridge direction and length of the front supporting leg 6 are adjusted to be corresponding to the supporting seat 2.4, and the main truss is placed on the supporting seat 2.4, as shown in fig. 20, and the span is moved;
7) Sequentially carrying out the assembly steps until all the assembly steps are completed.
The prefabricated pier column 9, the prefabricated capping beam 10 and the steel main beam 11 of the embodiment are all prefabricated in advance in factories.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A bridge girder erection machine for rapid construction of prefabricated bridge girders comprises a main girder (1), a rear supporting point positioned at the rear half part of the main girder (1) and a front supporting point positioned at the front half part of the main girder (1); the main truss (1) is provided with an overhead crane for hoisting the prefabricated pier column (9), the prefabricated bent cap (10) and the steel main beam (11); the rear supporting point comprises a rear supporting leg (5) arranged at the rear end of the main truss (1) and a middle rear supporting leg (4) positioned in front of the rear supporting leg (5); the upper end of the middle and rear supporting legs (4) is fixed on the main truss (1), and the lower end of the middle and rear supporting legs (4) is provided with a rolling structure capable of driving the middle and rear supporting legs (4) to travel along the assembled bridge deck, and the rolling structure is characterized in that: the front supporting point comprises a front supporting leg (2) positioned at the lower part of the front end of the main truss (1); the front support leg (2) is a vertical support structure with the upper end connected with the main truss (1) and the lower end supported on the ground below the front end of the main truss (1);
the front fulcrum also comprises a supporting seat (2.4) which is placed on the ground below the front end of the main truss (1); the supporting seat (2.4) is of a block-shaped structure with a horizontal upper end face and a small upper part and a large lower part; the lower end of the front supporting leg (2) is supported on the upper end face of the supporting seat (2.4);
the front fulcrum also comprises a middle front supporting leg (3) positioned between the middle rear supporting leg (4) and the front supporting leg (2); the middle front supporting leg (3) is a vertical supporting structure with the upper end connected with the main truss (1) in a sliding mode and the lower end anchored on the prefabricated capping beam (10).
2. A bridge girder erection machine for rapid construction of prefabricated bridge according to claim 1, wherein: the front support leg (2) comprises a fixed sleeve (2.1) fixed at the lower part of the front end of the main truss (1) and a movable sleeve (2.2) with the lower end placed on the supporting seat (2.4); a first jacking cylinder (2.3) which is vertically arranged is arranged on the end surface of the outer side of the circumference of the movable sleeve (2.2); the pushing end of the first jacking cylinder (2.3) is fixed on the end face of the outer side of the circumference of the fixed sleeve (2.1); the lower end of the fixed sleeve (2.1) is sleeved at the upper end of the movable sleeve (2.2), and a plurality of groups of through holes (2.7) which are arranged at intervals along the vertical direction are formed in the overlapped part of the fixed sleeve; the through hole (2.7) is internally provided with a bolt in a penetrating way.
3. A bridge girder erection machine for rapid construction of prefabricated bridge according to claim 2, wherein: the lower end of the movable sleeve (2.2) is provided with a spherical hinge support; the spherical hinge support comprises a spherical crown (2.5) fixed at the lower end of the movable sleeve (2.2) and a bottom plate (2.6) provided with a spherical groove corresponding to the spherical crown (2.5); the spherical crown (2.5) can be hinged in the spherical groove in a rotating way around the spherical center.
4. A bridge girder erection machine for rapid construction of prefabricated bridge according to claim 1, wherein: the middle front support leg (3) comprises a cross beam (3.1) horizontally and transversely arranged, two groups of roller groups (3.2) which are arranged on the cross beam (3.1) at intervals along the transverse direction, and vertical support rods (3.3) which are positioned at two ends of the cross beam (3.1); a transverse pushing structure is arranged between the two groups of roller groups (3.2); the upper ends of the supporting rods (3.3) are fixed on the cross beam (3.1), the lower ends of the supporting rods are provided with anchor rods (3.4) which are used for being fixed with the prefabricated capping beams (10), and transverse struts (3.5) are arranged between the two supporting rods (3.3).
5. A bridge girder erection machine for rapid construction of prefabricated bridge according to claim 4, wherein: the roller group (3.2) comprises a sliding base (3.6) sleeved on the cross beam (3.1); the transverse pushing structure comprises a transverse pushing oil cylinder (3.7) and a limiting rod (3.8) which are positioned between two groups of sliding bases (3.6); the shell of the horizontal pushing cylinder (3.7) is fixed on the cross beam (3.1), and the pushing end is fixed on a group of sliding bases (3.6); the limiting rod (3.8) is a telescopic rod with two ends respectively hinged to the two groups of sliding bases (3.6) and changeable axial length.
6. A bridge girder erection machine for rapid construction of prefabricated bridge according to claim 1, wherein: the middle and rear supporting legs comprise short cross beams (4.1) fixed at the lower parts of the two lateral sides of the main truss (1), connecting beams (4.2) arranged vertically and lateral supporting beams (4.3) with two ends fixedly connected with the lower ends of the two connecting beams (4.2); the short cross beams (4.1) are horizontally and transversely arranged, and a gap for the crane slings to pass through is reserved between the two short cross beams (4.1); the two connecting beams (4.2) are horizontally and transversely arranged at intervals, and the upper end and the lower end of the two connecting beams are fixedly connected with the short cross beam (4.1) and the supporting beam (4.3) respectively and form a hollow annular structure with the short cross beam (4.1) and the supporting beam (4.3).
7. The bridge girder erection machine for rapid construction of prefabricated bridge according to claim 6, wherein: the rolling structure comprises a base (4.4) fixed at the lower part of the supporting beam (4.3) and a walking roller (4.5) arranged on the base (4.4); the base (4.4) is provided with a second jacking cylinder (4.6) which is vertically arranged; the walking roller (4.5) is connected to a track (4.7) paved on the bridge deck in a rolling way.
8. A bridge girder erection machine for rapid construction of prefabricated bridge according to claim 1, wherein: the crown block comprises a front crown block (6) for cooperatively carrying the prefabricated pier column (9) and the steel girder (11), a rear crown block (7) and a secondary crown block (8) for carrying the supporting seat (2.4).
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110616637B (en) * | 2019-08-14 | 2021-06-15 | 中交二航局第二工程有限公司 | Overlength multifunctional integrated bridge girder erection machine and construction method for installing prefabricated bridge |
| CN110748163A (en) * | 2019-11-15 | 2020-02-04 | 河南省中冶起重机有限公司 | Novel bridge girder erection machine |
| CN111646362A (en) * | 2020-06-01 | 2020-09-11 | 吕友飞 | Be applied to bridge construction's quick hoist mechanism |
| CN112627059A (en) * | 2020-12-21 | 2021-04-09 | 中建八局第三建设有限公司 | Pier-beam integrated bridge girder erection machine and via hole construction method |
| CN112663514A (en) * | 2020-12-21 | 2021-04-16 | 中建八局第三建设有限公司 | Novel pier-beam integrated bridge girder erection machine |
| CN114277688B (en) * | 2021-12-28 | 2024-02-02 | 中交路桥华南工程有限公司 | Bridge girder erection machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024938A (en) * | 2007-03-09 | 2007-08-29 | 中铁十七局集团有限公司 | Assembling type bridge-errecting machine |
| CN200981978Y (en) * | 2006-12-19 | 2007-11-28 | 秦皇岛市北戴河通联路桥机械有限公司 | Two-span step-type bridge girder erection machine |
| CN101736696A (en) * | 2009-12-10 | 2010-06-16 | 郑州大方桥梁机械有限公司 | Highway-railway dual-purpose box-shaped double-beam T-shaped beam bridge girder erection machine |
| CN103572699A (en) * | 2012-08-03 | 2014-02-12 | 浙江中建路桥设备有限公司 | Novel road bridge girder erection machine |
| CN103590337A (en) * | 2012-08-17 | 2014-02-19 | 秦皇岛天业通联重工股份有限公司 | Bridge girder erection machine system and transferring method thereof |
| CN103741604A (en) * | 2014-01-21 | 2014-04-23 | 张利铨 | Fully prefabricated reinforced concrete bridge assembly structure and connecting method for same |
| CN104831630A (en) * | 2014-10-22 | 2015-08-12 | 中铁十一局集团第六工程有限公司 | Light small-curve segment assembling and bridging machine |
| CN106400701A (en) * | 2016-08-25 | 2017-02-15 | 中铁十局集团有限公司 | Single-girder low-level balanced cantilever assembling bridge erection machine |
| CN206916628U (en) * | 2017-06-30 | 2018-01-23 | 中交第二航务工程局有限公司 | A kind of Bridge Erector for prefabricated assembled bridge rapid construction |
-
2017
- 2017-06-30 CN CN201710523926.2A patent/CN109183618B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200981978Y (en) * | 2006-12-19 | 2007-11-28 | 秦皇岛市北戴河通联路桥机械有限公司 | Two-span step-type bridge girder erection machine |
| CN101024938A (en) * | 2007-03-09 | 2007-08-29 | 中铁十七局集团有限公司 | Assembling type bridge-errecting machine |
| CN101736696A (en) * | 2009-12-10 | 2010-06-16 | 郑州大方桥梁机械有限公司 | Highway-railway dual-purpose box-shaped double-beam T-shaped beam bridge girder erection machine |
| CN103572699A (en) * | 2012-08-03 | 2014-02-12 | 浙江中建路桥设备有限公司 | Novel road bridge girder erection machine |
| CN103590337A (en) * | 2012-08-17 | 2014-02-19 | 秦皇岛天业通联重工股份有限公司 | Bridge girder erection machine system and transferring method thereof |
| CN103741604A (en) * | 2014-01-21 | 2014-04-23 | 张利铨 | Fully prefabricated reinforced concrete bridge assembly structure and connecting method for same |
| CN104831630A (en) * | 2014-10-22 | 2015-08-12 | 中铁十一局集团第六工程有限公司 | Light small-curve segment assembling and bridging machine |
| CN106400701A (en) * | 2016-08-25 | 2017-02-15 | 中铁十局集团有限公司 | Single-girder low-level balanced cantilever assembling bridge erection machine |
| CN206916628U (en) * | 2017-06-30 | 2018-01-23 | 中交第二航务工程局有限公司 | A kind of Bridge Erector for prefabricated assembled bridge rapid construction |
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