CN111675112B - A height-adjustable bridge pier hoisting machine, construction method and overpass method - Google Patents
A height-adjustable bridge pier hoisting machine, construction method and overpass method Download PDFInfo
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- CN111675112B CN111675112B CN202010571913.4A CN202010571913A CN111675112B CN 111675112 B CN111675112 B CN 111675112B CN 202010571913 A CN202010571913 A CN 202010571913A CN 111675112 B CN111675112 B CN 111675112B
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- assembly
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- 238000010276 construction Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 106
- 230000008093 supporting effect Effects 0.000 claims description 105
- 230000032258 transport Effects 0.000 claims description 86
- 230000009194 climbing Effects 0.000 claims description 28
- 230000000712 assembly Effects 0.000 description 9
- 238000000429 assembly Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Classifications
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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
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
- B66C19/005—Straddle carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/14—Trolleys or crabs, e.g. operating above runways adapted to operate on crane or bridge structure of particular configuration, e.g. on reinforced concrete girders of rectangular cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
- B66C19/02—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries collapsible
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/08—Runners; Runner bearings
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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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/10—Undercarriages or bogies, e.g. end carriages, end bogies
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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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明提供了一种高度可调式桥墩吊装机、施工方法及过天桥方法，其中，高度可调式桥墩吊装机包括：框架梁总成，其包括横梁；起重机构，其设置在所述框架梁总成上，用于起吊待拼装预制桥墩；支腿总成，其用于支撑所述框架梁总成；所述支腿总成包括拆分部和支腿部，所述拆分部的上端与所述横梁连接并贯穿所述横梁的端部，所述拆分部的下端与所述支腿部可拆卸连接，且所述横梁适于在所述拆分部和所述支腿部上移动。本发明通过设置具有拆分部和支腿部的支腿总成，使得吊装机高度可调整，提升了吊装机通过天桥的桥洞等限高地形时运输的便捷性。
The present invention provides a height-adjustable bridge pier hoist, a construction method and a method for crossing an overpass, wherein the height-adjustable bridge pier hoist comprises: a frame beam assembly, which comprises a crossbeam; a lifting mechanism, which is arranged on the frame beam assembly and is used to hoist the prefabricated bridge piers to be assembled; a leg assembly, which is used to support the frame beam assembly; the leg assembly comprises a splitting part and a leg part, the upper end of the splitting part is connected to the crossbeam and passes through the end of the crossbeam, the lower end of the splitting part is detachably connected to the leg part, and the crossbeam is suitable for moving on the splitting part and the leg part. The present invention makes the height of the hoist adjustable by providing a leg assembly with a splitting part and a leg part, thereby improving the convenience of transportation of the hoist when passing through height-restricted terrain such as the bridge hole of an overpass.
Description
Technical Field
The invention relates to the technical field of prefabricated pier installation equipment, in particular to a height-adjustable pier hoisting machine, a construction method and an overpass passing method.
Background
At present, the lifting machine for lifting the pier is generally higher in height and fixed in height, and when the lifting machine encounters an overpass in the transportation process, the lifting machine is transported through a special tool after being disassembled, so that the transportation cost and the transportation difficulty of the lifting machine are greatly increased.
Disclosure of Invention
The invention solves the problem of improving the convenience of transportation of the bridge pier hoisting machine when the bridge pier hoisting machine passes through the bridge hole of the overpass and the like to limit the height of the terrain.
In order to solve the above problems, the present invention provides a height-adjustable bridge pier hoisting machine, comprising:
a frame beam assembly comprising a cross beam;
the hoisting mechanism is arranged on the frame beam assembly and used for hoisting the prefabricated bridge pier to be assembled;
a leg assembly for supporting the frame beam assembly;
the landing leg assembly comprises a disassembling part and a landing leg part, wherein the upper end of the disassembling part is connected with the cross beam and penetrates through the end part of the cross beam, the lower end of the disassembling part is detachably connected with the landing leg part, and the cross beam is suitable for moving on the disassembling part and the landing leg part.
Optionally, the splitting part comprises a plurality of segments, and the segments are sequentially arranged from top to bottom and are detachably connected with each other.
Optionally, the height-adjustable bridge pier hoisting machine further comprises a climbing mechanism, one end of the climbing mechanism is arranged at the end part of the cross beam, the other end of the climbing mechanism is sleeved on the supporting leg assembly, and the end part of the cross beam is in sliding connection with the supporting leg assembly through the climbing mechanism.
Optionally, the climbing mechanism comprises a positioning seat and a telescopic rod, wherein the positioning seat is sleeved on the supporting leg assembly and is in sliding connection with the supporting leg assembly, one end of the telescopic rod is fixed on the positioning seat, and the other end of the telescopic rod is fixed on the cross beam.
Optionally, the split part and the leg part are both provided with positioning holes, and the positioning seat and the split part or the leg part are suitable for being detachably connected at the positioning holes through a locking structure.
Optionally, two cross beams are arranged, the two ends of each cross beam are provided with the supporting leg assemblies, the frame beam assembly further comprises a main beam, the main beam is arranged between the two cross beams, and the two ends of the main beam are respectively connected with the two cross beams.
Optionally, the height-adjustable bridge pier hoisting machine further comprises a running mechanism, wherein the running mechanism comprises a frame and a wheel set, the frame is used for connecting the wheel set and the supporting leg part, and the running mechanism is suitable for rotating relative to the supporting leg part.
Optionally, the running mechanism further comprises a telescopic piece arranged at one end of the frame far away from the supporting leg part, one end of the telescopic piece is fixed on the frame, and the other end of the telescopic piece is suitable for being supported on the ground or separated from the ground.
Optionally, the wheel set comprises a plurality of running wheels, and the telescopic piece is positioned between the plurality of running wheels.
Optionally, the lifting mechanism comprises a winch, a lifting trolley, a lifting appliance and a traversing oil cylinder, wherein the winch is arranged on the beam, the lifting trolley is arranged on the main beam, the lifting appliance is positioned below the lifting trolley and is suitable for being connected with the prefabricated pier to be assembled, one end of the traversing oil cylinder is fixed on the main beam, the other end of the traversing oil cylinder is fixed on the lifting trolley, and the lifting trolley is suitable for moving along the length direction of the main beam through the traversing oil cylinder on the main beam.
In order to solve the above problems, the present invention also provides a construction method for erecting a prefabricated pier, which adopts the height-adjustable pier hoisting machine, comprising:
step 1, a transport vehicle transports a pier column to enter the lower part of a height-adjustable pier hoisting machine, the height-adjustable pier hoisting machine hoistes the pier column, and the pier column is vertically installed on a pier to be hoisted;
Step 2, the transport vehicle transports the bridge pier bent cap to enter the lower part of the height-adjustable bridge pier hoisting machine, and the height-adjustable bridge pier hoisting machine hoistes the bridge pier bent cap and moves the bridge pier bent cap to the upper part of the bridge pier upright post so as to assemble the bridge pier bent cap and the bridge pier upright post;
Step 3, the transport vehicle transports the bridge pier end beam to enter the lower part of the height-adjustable bridge pier hoisting machine, and the height-adjustable bridge pier hoisting machine hoistes the bridge pier end beam and moves the bridge pier end beam to the end part of the bridge pier cover beam so as to assemble the bridge pier end beam and the bridge pier cover beam;
And 4, repeating the step 3 to finish the assembly of the end beam of the other pier.
In order to solve the above problems, the present invention also provides a method for passing an overpass of a height-adjustable bridge pier hoisting machine, which comprises the steps of:
Step a, a frame beam assembly of the height-adjustable bridge pier hoisting machine falls, a splitting part of a supporting leg assembly of the height-adjustable bridge pier hoisting machine is detached, the splitting part is installed on a transport vehicle as a bracket, and the transport vehicle runs below the height-adjustable bridge pier hoisting machine;
Step b, the frame beam assembly falls onto the bracket;
And c, lifting the frame beam assembly to the supporting leg part of the supporting leg assembly to leave the ground by the transport vehicle, and transporting the height-adjustable bridge pier hoisting machine through a bridge hole of the overpass by the transport vehicle.
Compared with the prior art, the crane has the advantages that the height of the support leg assembly is adjustable through the arrangement of the disassembling part and the support leg part, so that the crane can conveniently pass through the bridge hole and other height limiting terrains of the overpass by lowering the height, the transportation convenience of the crane when passing through the bridge hole and other height limiting terrains of the overpass is greatly improved, the crane is suitable for lifting prefabricated piers to be assembled with different height specifications, the application range of the crane is enlarged, and in addition, the crane can be used as special equipment for assembling the prefabricated piers, and compared with the prior art for assembling the prefabricated piers by adopting crawler cranes or automobile cranes, the crane in the embodiment does not need to put the crane in advance, does not need to increase preparation work such as counterweight and the like, so that the assembly construction efficiency of the prefabricated piers is improved, and the construction time is saved.
Drawings
Fig. 1 is a schematic structural view of a height-adjustable pier hoisting machine according to an embodiment of the present invention;
fig. 2 is a schematic structural view of another view angle of a height-adjustable bridge pier hoisting machine according to an embodiment of the present invention;
fig. 3 is a schematic view of a height-adjustable bridge pier hoisting machine according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a further view of the height-adjustable pier hoisting machine according to the embodiment of the present invention;
Fig. 5 (a) and fig. 5 (b) are schematic views of a state corresponding to step 1.1 in a construction method for erecting a prefabricated pier according to an embodiment of the present invention;
fig. 6 (a) and 6 (b) are schematic views showing another state corresponding to step 1.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 7 (a) and fig. 7 (b) are schematic views showing still another state corresponding to step 1.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 8 (a) and fig. 8 (b) are schematic views of a state corresponding to step 1.2 in the construction method for erecting a prefabricated pier according to the embodiment of the present invention;
Fig. 9 (a) and 9 (b) are schematic views showing another state corresponding to step 1.2 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 10 (a) and fig. 10 (b) are schematic views of a state corresponding to step 2.1 in the construction method for erecting a prefabricated pier according to the embodiment of the present invention;
Fig. 11 (a) and 11 (b) are schematic views showing another state corresponding to step 2.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
fig. 12 (a) and 12 (b) are schematic views showing still another state corresponding to step 2.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 13 (a) and 13 (b) are schematic views showing still another state corresponding to step 2.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 14 (a) and 14 (b) are schematic views showing a state corresponding to step 2.2 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 15 (a) and 15 (b) are schematic views showing a state corresponding to step 3.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 16 (a) and 16 (b) are schematic views showing another state corresponding to step 3.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 17 (a) and 17 (b) are schematic views showing still another state corresponding to step 3.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 18 (a) and 18 (b) are schematic views showing still another state corresponding to step 3.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 19 (a) and 19 (b) are schematic views showing a state corresponding to step 3.2 in the construction method for erecting a precast pier according to the embodiment of the present invention;
fig. 20 (a) and 20 (b) are schematic views showing a state corresponding to step 4.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
fig. 21 (a) and 21 (b) are schematic views showing another state corresponding to step 4.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
fig. 22 (a) and 22 (b) are schematic views showing still another state corresponding to step 4.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
fig. 23 (a) and 23 (b) are schematic views showing still another state corresponding to step 4.1 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 24 (a) and 24 (b) are schematic views showing a state corresponding to step 4.2 in the construction method for erecting a precast pier according to the embodiment of the present invention;
Fig. 25 (a) and 25 (b) are schematic views of states corresponding to the case where a height-adjustable bridge pier hoisting machine completes one bridge pier assembling work in the construction method for erecting a prefabricated bridge pier according to the embodiment of the invention;
Fig. 26 (a) and fig. 26 (b) are schematic views of the states corresponding to the case where the height-adjustable pier hoisting machine is ready to go to the next pier to be hoisted in the construction method for erecting the prefabricated pier according to the embodiment of the invention;
fig. 27 (a) and 27 (b) are schematic views showing the states corresponding to step a in the overpass method of the height-adjustable pier hoist according to the embodiment of the present invention;
fig. 28 (a) and fig. 28 (b) are schematic views showing a state corresponding to step b in the overpass method of the height-adjustable bridge pier hoisting machine according to the embodiment of the present invention;
Fig. 29 (a) and fig. 29 (b) are schematic views showing another state corresponding to step b in the overpass method of the height-adjustable pier hoist according to the embodiment of the present invention;
Fig. 30 (a) and fig. 30 (b) are schematic views showing a state corresponding to step c in the overpass method of the height-adjustable bridge pier hoist according to the embodiment of the present invention;
Fig. 31 (a) and 31 (b) are schematic views showing another state corresponding to step c in the overpass method of the height-adjustable bridge pier hoist according to the embodiment of the present invention;
fig. 32 (a) and 32 (b) are schematic views showing a state corresponding to step d in the overpass method of the height-adjustable bridge pier hoist according to the embodiment of the present invention;
Fig. 33 (a) and 33 (b) are schematic views showing another state corresponding to step d in the overpass method of the height-adjustable bridge pier hoist according to the embodiment of the present invention.
Reference numerals illustrate:
1-frame beam assembly, 11-cross beam, 12-main beam, 2-lifting mechanism, 21-hoist, 22-lifting trolley, 23-lifting tool, 3-landing leg assembly, 31-upper section, 32-middle section, 33-landing leg, 34-locating hole, 4-running mechanism, 41-frame, 42-wheel group, 43-telescopic piece, 5-climbing mechanism, 51-locating seat, 511-matching hole, 52-telescopic rod, 71-pier column, 72-pier capping beam, 73-pier end beam and 8-transport vehicle.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the coordinate system XYZ provided herein, the forward direction of the X axis represents the front, the reverse direction of the X axis represents the rear, the forward direction of the Y axis represents the right, the reverse direction of the Y axis represents the left, the forward direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom. Also, it is noted that the terms "first," "second," and the like in the description and claims of the present invention and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
Referring to fig. 1 to 4, an embodiment of the present invention provides a height-adjustable pier lifting machine, which comprises a frame beam assembly 1 including a cross beam 11, a lifting mechanism 2 provided on the frame beam assembly 1 for lifting a prefabricated pier to be assembled, a leg assembly 3 for supporting the frame beam assembly 1, and a leg assembly 33 having an upper end connected to the cross beam 11 and penetrating an end of the cross beam 11, a lower end detachably connected to the leg portion 33, and the cross beam 11 adapted to move on the split portion and the leg portion 33.
In this embodiment, the motion of the height-adjustable bridge pier hoisting machine (hereinafter referred to as hoisting machine) in the assembly process of the prefabricated bridge pier may be controlled manually or controlled by a machine, for example, by setting a control mechanism on the hoisting machine and electrically connecting the hoisting mechanism 2 and other components with the control mechanism, the motion of the hoisting machine in the assembly process of the prefabricated bridge pier is controlled by using the control mechanism, so as to improve the automation degree of the hoisting machine and the construction efficiency of the hoisting machine. The landing leg assembly 3 of the hoisting machine is used for supporting the frame beam assembly 1, and the integral structural strength of the hoisting machine is enhanced, so that the stability of the hoisting mechanism 2 arranged on the frame beam assembly 1 when hoisting the prefabricated bridge pier to be assembled is ensured, and the stability of the hoisting machine during moving and transporting is ensured.
The upper end of the disassembling part (namely, the disassembling part is positioned at one end in the Z-axis forward direction in fig. 1) is connected with the cross beam 11 and penetrates through the end part of the cross beam 11, the lower end of the disassembling part (namely, the disassembling part is positioned at one end in the Z-axis reverse direction in fig. 1) is detachably connected with the supporting leg part 33, namely, the disassembling part is positioned above the supporting leg part 33 (namely, in the Z-axis forward direction in fig. 1), so that the height of the supporting leg assembly 3 (namely, the dimension of the supporting leg assembly 3 in the Z-axis direction in fig. 1) is conveniently adjusted by disassembling or installing the disassembling part, the height of the crane is adjustable, the whole height of the crane is reduced by disassembling the disassembling part, the crane can conveniently pass through the bridge hole of the overpass and the like of the crane without disassembling the crane, the transportation convenience of the crane when passing through the bridge hole and the like of the overpass is greatly improved, and the transportation cost of the crane is saved. In addition, the disassembling part of the supporting leg assembly 3 and the supporting leg 33 are coaxially arranged, so that the cross beam 11 moves on the disassembling part and the supporting leg 33, namely, the end part of the cross beam 11 is suitable for moving on the disassembling part and the supporting leg 33 along the length direction (namely, the Z-axis direction in fig. 1) of the supporting leg assembly 3, the position of the end part of the cross beam 11 on the supporting leg assembly 3 is adjustable, the height between the frame beam assembly 1 and the lifting mechanism 2 and the ground (namely, the distance between the frame beam assembly 1 and the lifting mechanism 2 and the ground) is adjustable, the lifting machine is suitable for lifting and assembling prefabricated piers to be assembled with different heights (namely, various prefabricated piers to be assembled with different sizes in the Z-axis direction in fig. 1), and the application range of the lifting machine is increased.
The lifting machine of this embodiment is through setting up the split portion and the landing leg portion 33 for the height of landing leg assembly 3 is adjustable, thereby makes the height-adjustable of lifting machine, so that the lifting machine through reduce the height come through the bridge opening etc. limit for height topography of overpass, greatly promoted the lifting machine transportation when passing through the bridge opening etc. limit for height topography of overpass, and made the lifting machine be suitable for the prefabricated pier of waiting to assemble of the different high specification of lifting machine, increased the application scope of lifting machine.
Optionally, the splitting part comprises a plurality of segments, and the segments are sequentially arranged from top to bottom and are detachably connected with each other.
The splitting section has a plurality of segments which are disposed in order from top to bottom and detachably connected to each other, and for convenience of description, the splitting section will be described below as including an upper segment 31 and a middle segment 32, wherein the middle segment 32 is provided with at least one, the middle segment 32 is located between the upper segment 31 and the leg portion 33, that is, the upper segment 31 is located at an upper end of the middle segment 32 (that is, the upper segment 31 is disposed at an end of the middle segment 32 in the Z-axis direction in fig. 1), the leg portion 33 is located at a lower end of the middle segment 32 (that is, the leg portion 33 is disposed at an end of the middle segment 32 in the Z-axis direction in fig. 1), and an end of the leg portion 33 remote from the middle segment 32 is used for supporting on the ground or is connected to the running mechanism 4 (described later), and the leg portion 33 plays a supporting role for the upper segment 31 and the middle segment 32. The middle section 32 is provided with at least one, so that the height of the supporting leg assembly 3 can be increased (reduced) by increasing (reducing) the number of the middle sections 32, so that the height of the hoisting machine can be increased (reduced) by increasing (reducing) the number of the middle sections 32, the hoisting machine can hoist and assemble prefabricated piers to be assembled with different height specifications, the application range of the hoisting machine is further improved, and the limitation that the existing hoisting machine is only suitable for hoisting piers located in a specific height range due to height fixing is overcome.
Optionally, as shown in fig. 1 and 2, two cross beams 11 are provided, two ends of each cross beam 11 are provided with a supporting leg assembly 3, the frame beam assembly 1 further comprises a main beam 12, the main beam 12 is arranged between the two cross beams 11, and two ends of the main beam 12 are respectively connected with the two cross beams 11.
The frame beam assembly 1 comprises a beam 11 and a main beam 12, wherein the beam 11 is provided with two beams which are parallel to each other, the main beam 12 is arranged between the two beams 11, and two ends of the main beam 12 are respectively connected with the two beams 11, so that the structural strength of the frame beam assembly 1 is improved. The girder 12 is provided with one or more girders, in this embodiment, two girders 12 are preferably provided, and the two girders 12 are parallel to each other and perpendicular to the cross beam 11, so as to ensure the structural strength of the frame girder assembly 1, and lifting mechanisms 2 are respectively provided on the two girders 12, so that the hoisting machine performs various operations on the prefabricated piers to be assembled (such as rotating and erecting the prefabricated piers to be assembled after hoisting), and two ends of each cross beam 11 are respectively provided with one supporting leg assembly 3, namely the supporting leg assemblies 3 are respectively provided with four supporting leg assemblies, so as to improve the supporting capability of the supporting leg assemblies 3 to the frame girder assembly 1, and ensure the integral stability of the hoisting machine when the hoisting machine lifts the prefabricated piers to be assembled through the lifting mechanisms 2. Furthermore, a running mechanism 4 (described later) may be provided at the lower end of each leg assembly 3 to facilitate movement of the hoisting machine. Moreover, the cross beam 11 is perpendicular to the supporting leg assembly 3, so that the hoisting machine is in a door frame structure, a certain space is reserved below the hoisting machine, the transportation vehicle 8 can conveniently enter below the hoisting machine, and the hoisting machine can hoist and assemble the prefabricated pier to be assembled below.
Further, the main beam 12 may be disposed between the two cross beams 11, or may be disposed above or below the two cross beams 11, which is not particularly limited in this embodiment.
Optionally, as shown in fig. 1, the height-adjustable bridge pier hoisting machine further comprises a climbing mechanism 5, one end of the climbing mechanism 5 is arranged at the end part of the beam 11, the other end of the climbing mechanism 5 is sleeved on the supporting leg assembly 3, and the end part of the beam 11 is in sliding connection with the supporting leg assembly 3 through the climbing mechanism 5.
The climbing mechanism 5 is used for connecting the cross beam 11 and the leg assembly 3, and for achieving a sliding connection of the end of the cross beam 11 with the leg assembly 3. Specifically, one end of the climbing mechanism 5 connected with the supporting leg assembly 3 is sleeved on the supporting leg assembly 3, so that the height of the cross beam 11 (namely the distance from the cross beam 11 to the ground) is changed by changing the position of the climbing mechanism 5 on the supporting leg assembly 3, the height of the frame beam assembly 1 is changed, the hoisting machine is suitable for hoisting prefabricated piers to be assembled at different heights, the application range of the hoisting machine is further improved, and one end of the climbing mechanism 5 connected with the supporting leg assembly 3 is suitable for locking the supporting leg assembly 3, so that the climbing mechanism 5 is positioned on the supporting leg assembly 3, the frame beam assembly 1 is prevented from moving downwards due to overload when the hoisting machine lifts the prefabricated piers to be assembled through the hoisting mechanism 2, and the stability of the hoisting machine in working process is ensured.
Alternatively, as shown in fig. 1 and 4, the climbing mechanism 5 includes a positioning seat 51 and a telescopic rod 52, the positioning seat 51 is sleeved on the leg assembly 3 and is slidably connected with the leg assembly 3, one end of the telescopic rod 52 is fixed on the positioning seat 51, and the other end is fixed on the cross beam 11.
The positioning seat 51 of the climbing mechanism 5 is sleeved on the supporting leg assembly 3 and is in sliding connection with the supporting leg assembly 3, the positioning seat 51 is suitable for locking the supporting leg assembly 3 to realize positioning of the climbing mechanism 5 on the supporting leg assembly 3, the telescopic rod 52 is suitable for stretching in the Z-axis direction in fig. 1 and is used for adjusting the height of the frame beam assembly 1 (namely the distance from the frame beam assembly 1 to the ground), and the telescopic rod 52 is arranged on the basis of the sliding connection of the positioning seat 51 and the supporting leg assembly 3, so that the height of the frame beam assembly 1 can be adjusted within a certain range (the telescopic range of the telescopic rod 52) only by the telescopic rod 52 without adjusting the position of the positioning seat 51 on the supporting leg assembly 3, and convenience in construction of a hoisting machine is greatly improved.
Alternatively, as shown in fig. 1 and 4, the disassembling portion and the supporting leg 33 are provided with positioning holes 34, and the positioning seat 51 and the disassembling portion or the supporting leg 33 are suitable for being detachably connected at the positioning holes 34 through a locking structure.
The positioning seat 51 of the climbing mechanism 5 locks the supporting leg assembly 3 through a locking structure so as to realize the positioning of the climbing mechanism 5 on the supporting leg assembly 3 and thus the positioning of the frame beam assembly 1, and the locking structure comprises a pin locking device or a fastener (such as a pin shaft) which is inserted into the positioning hole 34 to realize the detachable connection of the positioning seat 51 and the splitting part or the supporting leg part 33. Specifically, when the locking structure is a pin locking device, the pin locking device is arranged on the positioning seat 51, the pin locking device is provided with a plugging part suitable for telescoping, the plugging part is arranged on one side of the positioning seat 51 facing the supporting leg assembly 3, when the positioning seat 51 of the climbing mechanism 5 moves to a corresponding position on the supporting leg assembly 3, the plugging part is opposite to the positioning hole 34 at the position, the plugging part of the pin locking device is stretched to be inserted into the positioning hole 34, so that the climbing mechanism 5 is positioned on the supporting leg assembly 3, when the locking structure is a fastening piece, the positioning seat 51 is provided with a matching hole 511 matched with the positioning hole 34, and when the positioning seat 51 of the climbing mechanism 5 moves to the corresponding position on the supporting leg assembly 3, the matching hole 511 is opposite to the positioning hole 34 at the position, and the fastening piece is inserted into the positioning hole 34 and the matching hole 511, so that the climbing mechanism 5 is positioned on the supporting leg assembly 3. Thus, by locking the position of the positioning seat 51 on the supporting leg assembly 3, the stability of the hoisting machine during operation is ensured.
Optionally, as shown in fig. 1 and 3, the height-adjustable pier hoisting machine further comprises a running mechanism 4, wherein the running mechanism 4 comprises a frame 41 and a wheel set 42, the frame 41 is used for connecting the wheel set 42 and the supporting leg 33, and the running mechanism 4 is suitable for rotating relative to the supporting leg 33.
The running mechanism 4 is arranged at the lower end of the supporting leg assembly 3 and is connected with the supporting leg part 33 of the supporting leg assembly 3 for driving the supporting leg assembly 3 to move, the wheel set 42 is arranged at the end of the frame 41 away from the supporting leg part 33 and is in contact with the ground for realizing running of the running mechanism 4, the running mechanism 4 is suitable for rotating relative to the supporting leg part 33, the frame 41 and the wheel set 42 can rotate relative to the supporting leg part 33 as a whole, and only the wheel set 42 can rotate relative to the supporting leg part 33, so that the crane can conveniently turn by rotating the running mechanism 4 when moving. In addition, the cross beam 11 and the main beam 12 based on the frame beam assembly 1 are mutually perpendicular, so that the traveling mechanism 4 drives the hoisting machine to transversely move or longitudinally move on the assembly site of the precast pier, thereby accurately assembling the precast pier to be assembled which is hoisted by the hoisting mechanism 2 onto a pier to be hoisted (namely, a table base for installing the precast pier to be assembled, which is not shown in the figure), wherein the transversely moving means moving along the length direction (namely, the X-axis direction in fig. 1) of the main beam 12, and the longitudinally moving means moving along the length direction (namely, the Y-axis direction in fig. 1) of the cross beam 11. Moreover, by arranging the running mechanism 4, the hoisting machine can be used as special equipment for splicing the prefabricated piers, and the hoisting machine lifts the prefabricated piers to be spliced through the hoisting mechanism 2 so as to move the prefabricated piers to be spliced on the pier to be hoisted for splicing operation.
Further, in this embodiment, it is preferable that the wheel set 42 is adapted to rotate relative to the leg portion 33 to reduce the rotation difficulty of the running mechanism 4, and the rotation angle of the wheel set 42 is in the range of 90++10°, so as to prevent the hoisting machine from being smoothly switched from the vertical movement to the lateral movement (or from the lateral movement to the vertical movement) when the rotation angle of the wheel set 42 is too small (i.e., when the rotation angle of the wheel set 42 is smaller than 80 °), and to prevent the running mechanism 4 from being increased in design and manufacturing difficulty when the rotation angle of the wheel set 42 is too large (i.e., when the rotation angle of the wheel set 42 is larger than 100 °).
Optionally, as shown in connection with fig. 1 and 3, the running gear 4 further comprises a telescopic member 43 provided at an end of the frame 41 remote from the leg portion 33, and one end of the telescopic member 43 is fixed to the frame 41, and the other end is adapted to be supported on or separated from the ground.
In this embodiment, the telescopic member 43 is suitable for telescoping, when the hoisting machine moves, the telescopic member 43 is separated from the ground, when the hoisting machine lifts the prefabricated pier to be assembled, the telescopic member 43 is supported on the ground to play a supporting role on the supporting leg assembly 3, the wheel set 42 is prevented from being crushed or caused to slip and move due to the fact that the load is too heavy when the hoisting machine lifts the prefabricated pier to be assembled through the hoisting mechanism 2, the stability of the hoisting machine during operation is ensured, in addition, the arrangement of the telescopic member 43 facilitates the wheel set 42 to rotate, that is, when the telescopic member 43 is supported on the ground, the wheel set 42 is subjected to pressure reduction or disappearance of the supporting leg assembly 3 and the frame beam assembly 1 (at the moment, the wheel set 42 is suspended), so that the wheel set 42 can rotate conveniently to realize steering of the running mechanism 4.
Optionally, the wheel set 42 comprises a plurality of running wheels, with the telescopic member 43 located between the plurality of running wheels.
The wheel set 42 comprises a plurality of running wheels to increase the contact area between the running mechanism 4 and the ground so as to ensure the stability of the hoisting machine at each running mechanism 4, and the telescopic piece 43 is positioned among the running wheels, so that the telescopic piece 43 and the support leg assembly 3 are coaxially arranged, and the supporting effect of the telescopic piece 43 on the support leg assembly 3 when the telescopic piece 43 is supported on the ground is ensured. Through setting up extensible member 43 and a plurality of running wheels for the lifting machine is lifted by crane through hoist mechanism 2 and is waited to assemble the prefabricated pier a plurality of running wheels and extensible member 43 all can be regarded as the fulcrum, have guaranteed the stability of fuselage when the lifting machine work, have increased security and reliability when the lifting machine was under construction.
Alternatively, as shown in fig. 1-4, the hoisting mechanism 2 comprises a hoist 21, a trolley 22, a lifting appliance 23 and a traversing cylinder, wherein the hoist 21 is arranged on the beam 11, the trolley 22 is arranged on the main beam 12, the lifting appliance 23 is positioned below the trolley 22 and is suitable for being connected with a prefabricated pier to be assembled, one end of the traversing cylinder is fixed on the main beam 12, the other end of the traversing cylinder is fixed on the trolley 22, and the trolley 22 is suitable for moving along the length direction of the main beam 12 through the traversing cylinder on the main beam 12.
In this embodiment, two lifting mechanisms 2 are preferably disposed on each main beam 12, the lifting trolley 22 of each lifting mechanism 2 is connected with a traversing cylinder, the lifting trolley 22 is driven to translate along the length direction (i.e. X-axis direction in fig. 1) of the main beam 12 by telescoping of the traversing cylinder so as to adjust the position of the lifting trolley 22 on the main beam 12 or the distance between the two lifting trolleys 22 to meet the requirement of lifting operation, the lifting device 23 is located below the lifting trolley 22 and is used for connecting with the prefabricated piers to be assembled when the prefabricated piers are lifted, the lifting device 21, the lifting trolley 22 and the lifting device 23 are sequentially connected through ropes or chains, the lifting device 23 moves along with the lifting trolley 22 in the length direction of the main beam 12, the movement of the lifting device 23 in the length direction of the main beam 12 is realized, and the movement of the lifting device 23 in the length direction of the supporting leg assembly 3 is realized by unreeling or reeling the ropes (or chains) through the lifting device 21.
Further, the hoist 21 may be provided on the main beam 12 and located at an end of the main beam 12.
Further, the end of the traversing cylinder far away from the trolley 22 can also be fixed on the beam 11.
The embodiment of the invention also provides a construction method for erecting the prefabricated pier, which adopts the height-adjustable pier hoisting machine and comprises the following steps:
Step 1, a transport vehicle 8 transports a pier column 71 to enter the lower part of a height-adjustable pier hoisting machine, the height-adjustable pier hoisting machine hoistes the pier column 71, and the pier column 71 is vertically installed on a pier to be hoisted;
Before the bridge pier assembling work, the hoisting machine needs to be moved to the side of the bridge pier to be hoisted in advance so as to reduce the distance from the hoisting machine to the bridge pier to be hoisted after hoisting the prefabricated bridge pier to be assembled, wherein the prefabricated bridge pier to be assembled comprises a bridge pier upright post 71, a bridge pier capping beam 72 and a bridge pier end beam 73, and the two bridge pier end beams are combined with fig. 5-9, wherein fig. 5 (a) to 9 (a) are respectively left side views in fig. 5 (b) to 9 (b), and the step 1 specifically comprises the following steps:
Step 1.1, a traveling mechanism 4 of the hoisting machine drives the hoisting machine to move to the side of a pier to be hoisted, a transport vehicle 8 transports a pier column 71 to enter the lower part of the hoisting machine, a hoisting mechanism 2 of the hoisting machine lifts the pier column 71, and the transport vehicle 8 exits the lower part of the hoisting machine and returns to a beam field to take beams (the situation is worth explaining, a plurality of transport vehicles 8 can also transport the pier column 71, the pier cap beam 72 and the pier end beam 73 respectively);
And 1.2, erecting the pier upright post 71 through the retraction motion of a hoisting machine, moving the hoisting machine to the position above the pier to be hoisted, and installing the pier upright post 71 on the pier to be hoisted. In this step, the bridge pier column 71 is lifted by the lifting mechanisms 2 on the two main beams 12 at the same time, the lifted bridge pier column 71 is in a horizontal state, then the lifting tool 23 is retracted by the retraction action of the lifting mechanisms 2, namely, the lifting mechanism 2 on one main beam 12 is retracted upwards (i.e. the positive direction of the Z axis in FIG. 15), and the lifting mechanism 2 on the other main beam 12 is retracted downwards (i.e. the negative direction of the Z axis in FIG. 15), so that the bridge pier column 71 is changed from the horizontal state to the vertical state so as to facilitate the assembly with the bridge pier to be lifted, and furthermore, because the lifting machine is moved from the position of the last bridge pier to be lifted which the bridge pier assembly work is completed before the lifting machine is moved above the bridge pier to be lifted, the travelling mechanism 4 is required to rotate by 90 degrees so that the lifting machine is moved transversely above the bridge pier to be lifted.
Step 2, a transport vehicle 8 transports the pier column 71 to enter the lower part of a height-adjustable pier hoisting machine, the height-adjustable pier hoisting machine hoistes the pier column 71, and the pier column 71 is vertically installed on a pier to be hoisted;
specifically, as shown in conjunction with fig. 10-14, wherein fig. 10 (a) to 14 (a) are left side views in fig. 10 (b) to 14 (b), respectively, step 2 includes the steps of:
step 2.1, driving the hoisting machine to move to the side of a pier to be hoisted by the running mechanism 4, transporting the pier capping beam 72 by the transport vehicle 8 to enter the lower part of the hoisting machine, rotating the rotary disc of the transport vehicle 8 to adjust the position until the two ends of the pier capping beam 72 placed on the rotary disc are positioned under the same main beam 12 (at this time, the axis of the pier capping beam 72 is parallel to the axis of the main beam 12 so that two hoisting mechanisms 2 on one main beam 12 hoist the pier capping beam 72 at the same time), hoisting the pier capping beam 72 by the hoisting mechanism 2 of the hoisting machine, and withdrawing the transport vehicle 8 from the lower part of the hoisting machine and returning to a beam field to take beams;
And 2.2, moving the hoisting machine to the position above the pier to be hoisted, and splicing the pier capping beam 72 to the pier upright post 71.
Step 3, a transport vehicle 8 transports the pier end beam 73 to enter the lower part of a height-adjustable pier hoisting machine, and the height-adjustable pier hoisting machine hoistes the pier end beam 73 and moves to the end part of the pier capping beam 72 so as to assemble the pier end beam 73 and the pier capping beam 72;
Specifically, as shown in conjunction with fig. 15-19, wherein fig. 15 (a) to 19 (a) are left side views in fig. 15 (b) to 19 (b), respectively, step 3 includes the steps of:
step 3.1, driving the hoisting machine to move to the side of a pier to be hoisted by the running mechanism 4, transporting the pier end beam 73 by the transport vehicle 8 to enter the lower part of the hoisting machine, rotating a rotary disc of the transport vehicle 8 to adjust the position until two ends of the pier end beam 73 placed on the rotary disc are positioned under the same main beam 12, hoisting the pier end beam 73 by the hoisting mechanism 2 of the hoisting machine, and returning the transport vehicle 8 to the lower part of the hoisting machine and taking the beam from a beam field;
And 3.2, moving the hoisting machine to the position above the pier to be hoisted, and splicing the pier end beams 73 to the pier capping beams 72.
And 4, repeating the step 3 to finish the assembly of the other pier end beam 73.
Specifically, as shown in conjunction with fig. 20-24, wherein fig. 20 (a) to 24 (a) are left side views in fig. 20 (b) to 24 (b), respectively, step 4 includes the steps of:
Step 4.1, driving the hoisting machine to move to the side of a pier to be hoisted by the running mechanism 4, transporting the pier end beam 73 by the transport vehicle 8 to enter the lower part of the hoisting machine, rotating a rotary disc of the transport vehicle 8 to adjust the position until two ends of the pier end beam 73 placed on the rotary disc are positioned under the same main beam 12, hoisting the pier end beam 73 by the hoisting mechanism 2 of the hoisting machine, and returning the transport vehicle 8 to the lower part of the hoisting machine and taking the beam from a beam field;
and 4.2, moving the hoisting machine to the position above the pier to be hoisted, and splicing the pier end beams 73 to the pier capping beams 72.
In this embodiment, the assembling of each part of the prefabricated pier is completed through step 1 to step 4. And, referring to fig. 25 to 26, fig. 25 (a) and fig. 26 (a) are left side views of fig. 25 (b) and fig. 26 (b), respectively, after the hoist completes the assembly work of one pier, the traveling mechanism 4 drives the hoist to move to leave the pier, and thereafter, the traveling mechanism 4 rotates by 90 ° and drives the hoist to move to the next pier to be hoisted, and the assembly of each part of the prefabricated pier is completed again through steps 1 to 4.
The embodiment of the invention also provides a overpass method of the height-adjustable bridge pier hoisting machine, which comprises the following steps:
Step a, a frame beam assembly 1 of a height-adjustable bridge pier hoisting machine falls, a splitting part of a supporting leg assembly 3 of the height-adjustable bridge pier hoisting machine is detached, the splitting part is arranged on a transport vehicle 8 to serve as a bracket, and the transport vehicle 8 runs below the height-adjustable bridge pier hoisting machine;
In this step, as shown in fig. 27, the end of the cross beam 11 is slid down onto the leg portion 33 along the leg assembly 3, at this time, the split portion is detached and mounted on the carriage 8 as a bracket for supporting the frame beam assembly 1 on the carriage 8, so that the frame beam assembly 1 is prevented from being easily knocked and damaged when being directly placed on the carriage 8, and thus, the height of the hoist is reduced.
Step b, the frame beam assembly 1 falls onto a bracket;
As shown in connection with fig. 28 and 29, in this step, the ends of the cross beams 11 continue to slide down the leg assemblies 3 to the main beams 12 of the frame beam assembly 1 and/or the cross beams 11 drop onto the brackets on the transport vehicle 8, so that the transport vehicle 8 supports the frame beam assembly 1.
And c, lifting the frame beam assembly 1 to the supporting leg 33 of the supporting leg assembly 3 by the transport vehicle 8, leaving the ground, and transporting the height-adjustable bridge pier hoisting machine by the transport vehicle 8 through a bridge hole of the overpass.
As shown in fig. 31 to 33, in this step, since the crane is not provided with the running mechanism 4, the leg portions 33 of the leg assemblies 3 are supported on the ground, and therefore, the carrier vehicle 8 can lift up the frame beam assembly 1 together with the leg assemblies 3 and leave the leg portions 33 from the ground, so that the carrier vehicle 8 can smoothly transport the crane through the height-limited terrain such as the bridge opening of the overpass.
Further, based on the above-mentioned overpass method of the height-adjustable bridge pier hoisting machine, when the hoisting machine is provided with the running mechanism 4, the overpass method of the corresponding height-adjustable bridge pier hoisting machine comprises:
step a1, a frame beam assembly 1 of a height-adjustable bridge pier hoisting machine falls, a splitting part of a supporting leg assembly 3 of the height-adjustable bridge pier hoisting machine is detached, the splitting part is arranged on a transport vehicle 8 to serve as a bracket, and the transport vehicle 8 runs below the height-adjustable bridge pier hoisting machine;
In this step, as shown in fig. 27, the end of the cross beam 11 is slid down onto the leg portion 33 along the leg assembly 3, at this time, the split portion is detached and mounted on the carriage 8 as a bracket for supporting the frame beam assembly 1 on the carriage 8, so that the frame beam assembly 1 is prevented from being easily knocked and damaged when being directly placed on the carriage 8, and thus, the height of the hoist is reduced.
Step b1, continuously falling the frame beam assembly 1 to a main beam 12 of the frame beam assembly 1 to fall on a bracket, disconnecting the support leg assembly 3 from the running mechanism 4, and lifting the frame beam assembly 1 by the carrier vehicle 8 until the support leg assembly 3 is separated from the running mechanism 4;
As shown in connection with fig. 28 and 29, in this step, the end of the cross beam 11 continues to slide down along the leg assembly 3 to the main beam 12 and/or the cross beam 11 falls onto the bracket on the carrier 8, at which time the connection (such as bolts, pins, etc.) between the frame 41 of the running gear 4 and the leg portion 33 of the leg assembly 3 is removed, such that the leg assembly 3 is disconnected from the running gear 4, and then the carrier 8 is lifted up to a small height (e.g., 100 mm) by the frame beam assembly 1 through the suspension cylinders, at which time the leg portions 33 are lifted up together by the connection with the cross beam 11 of the frame beam assembly 1, such that the leg assembly 3 is separated from the running gear 4, wherein the suspension cylinders are used to lift up the load-bearing portion of the carrier 8 (i.e., the portion of the carrier 8 is used to load-bear the frame beam assembly 1 through the bracket), and the frame beam assembly 1 are lifted up by the carrier 8, such that the load-bearing portion of the carrier 8 has a plurality of support points (i.e., a plurality of support points) with the frame beam assembly 1) with respect to the frame beam assembly 1, the frame beam assembly 1 can be effectively moved up in a stable manner relative to the use of the frame beam assembly 1 during the lifting operation of the suspension beam assembly 1.
Step c1, a transport vehicle 8 moves to one side of a running mechanism 4, a frame beam assembly 1 falls to a supporting leg part 33 of a supporting leg assembly 3 to be supported on the ground, the frame beam assembly 1 is separated from a bracket, the transport vehicle 8 leaves the lower part of a height-adjustable bridge pier hoisting machine, and a splitting part arranged on the transport vehicle 8 is unloaded;
As shown in fig. 30 and 31, in this step, the transport carriage 8 transports the frame beam assembly 1 and the leg assembly 3 away from the running mechanism 4 so that the leg portion 33 of the leg assembly 3 can be directly supported to the ground after the frame beam assembly 1 falls. Specifically, after the transport carriage 8 transports the frame beam assembly 1 and the leg assembly 3 away from the running mechanism 4, the leg portion 33 falls to be supported to the ground with respect to the frame beam assembly 1, plays a supporting role on the frame beam assembly 1, and jacks up the frame beam assembly 1 until the frame beam assembly 1 is separated from the bracket. Then, the transport carriage 8 is moved to a position away from the lower side of the frame beam assembly 1, at which time the disassembling portion mounted on the transport carriage 8 is unloaded, so that the overall height of the transport carriage 8 is further lowered when the transport carriage 8 transports the hoisting machine in the subsequent step, so that the transport carriage 8 transports the hoisting machine to pass through the bridge opening of the overpass and the like to limit the height of the terrain.
Step d1, the transport vehicle 8 moves to the lower part of the height-adjustable bridge pier hoisting machine, and the frame beam assembly 1 is jacked to the supporting leg 33 of the supporting leg assembly 3 to leave the ground, and the transport vehicle 8 transports the height-adjustable bridge pier hoisting machine to pass through the bridge opening of the overpass.
In this step, as shown in fig. 31 to 33, the transport carriage 8 transports the hoist having a lowered height through the bridge opening of the overpass by detaching the detaching portion. Further, for step c1 and step d1, after the disassembling portion is disassembled by the crane, if the height of the transport vehicle 8 is enough to pass through the bridge hole of the overpass and the like in the transportation of the crane, the disassembling portion serving as the bracket on the transport vehicle 8 in step c1 can be not required to be disassembled, and at this time, the transport vehicle 8 can directly bear the crane through the bracket to pass through the bridge hole of the overpass and the like in the height limiting manner, so as to ensure the stability of the crane on the transport vehicle 8.
Further, when the crane is provided with the running mechanism 4 and the split part comprises a plurality of segments (for convenience of description, the split part comprises an upper segment 31 and a middle segment 32, wherein at least one middle segment 32 is provided), the overpass method of the height-adjustable bridge crane comprises:
step a2, the frame beam assembly 1 of the height-adjustable bridge pier hoisting machine falls, the upper section 31 of the supporting leg assembly 3 of the height-adjustable bridge pier hoisting machine is disassembled, the upper section 31 is installed on the transport vehicle 8 to serve as a bracket, and the transport vehicle 8 runs below the height-adjustable bridge pier hoisting machine;
In this step, as shown in fig. 27, the end of the cross beam 11 is slid down along the leg assembly 3 to be away from the upper segment 31, at which time the upper segment 31 is detached and the detached upper segment 31 is mounted on the carriage 8 as a bracket for supporting the frame beam assembly 1 on the carriage 8, avoiding the occurrence of the situation that the frame beam assembly 1 is easily knocked and damaged when being directly placed on the carriage 8, thus enabling the crane height to be primarily lowered.
Step b2, continuously falling the frame beam assembly 1 to a main beam 12 of the frame beam assembly 1 to fall on a bracket, disconnecting the support leg assembly 3 from the running mechanism 4, and lifting the frame beam assembly 1 by the carrier vehicle 8 until the support leg assembly 3 is separated from the running mechanism 4;
As shown in connection with fig. 28 and 29, in this step, the end of the cross beam 11 continues to slide down along the leg assembly 3 to the main beam 12 and/or the cross beam 11 falls onto the bracket on the transport vehicle 8, at which time the connection (such as bolts, pins, etc.) between the frame 41 of the running gear 4 and the leg portion 33 of the leg assembly 3 is removed, so that the leg assembly 3 is disconnected from the running gear 4, and then the transport vehicle 8 is lifted up by a small height (for example, 100 mm) by the frame beam assembly 1 through the suspension cylinder, at which time the leg assembly 3 with the upper segment 31 removed is lifted up together due to the connection with the cross beam 11 of the frame beam assembly 1, so that the leg assembly 3 is separated from the running gear 4.
Step c2, the transport vehicle 8 moves to one side of the running mechanism 4, the frame beam assembly 1 falls to the supporting leg part 33 of the supporting leg assembly 3 to be supported on the ground, the frame beam assembly 1 is separated from the bracket, the transport vehicle 8 leaves the lower part of the height-adjustable bridge pier hoisting machine, and the upper section 31 arranged on the transport vehicle 8 is unloaded;
as shown in fig. 30 and 31, in this step, the transport carriage 8 transports the frame beam assembly 1 and the leg assembly 3 away from the running mechanism 4 so that the leg portion 33 of the leg assembly 3 can be directly supported to the ground after the frame beam assembly 1 falls. Specifically, after the transport carriage 8 transports the frame beam assembly 1 and the leg assembly 3 away from the running mechanism 4, the leg portion 33 falls to be supported to the ground with respect to the frame beam assembly 1, plays a supporting role on the frame beam assembly 1, and jacks up the frame beam assembly 1 until the frame beam assembly 1 is separated from the bracket. The trolley 8 is then moved away from under the frame beam assembly 1, at which time the upper segments 31 mounted on the trolley 8 are unloaded.
Step d2, removing the middle section 32 of the supporting leg assembly 3, mounting the middle section 32 on the transport vehicle 8, moving the transport vehicle 8 to the lower part of the height-adjustable bridge pier hoisting machine, jacking the frame beam assembly 1 to the supporting leg 33 of the supporting leg assembly 3 to leave the ground, and transporting the height-adjustable bridge pier hoisting machine by the transport vehicle 8 through a bridge hole of the overpass.
As shown in fig. 31 to 33, the plurality of intermediate segments 32 may be provided, and the heights of the plurality of intermediate segments 32 may be equal or unequal. Thus, in this step, when the middle section 32 is provided with one, then the middle section 32 of the leg assembly 3 is removed and the middle section 32 is mounted to the truck 8 when the end of the cross beam 11 moves along the leg assembly 3 to the leg portion 33, when the middle section 32 is provided with a plurality of middle sections, then when there are one or more middle sections 32 of the cross beam 11 that move along the leg assembly 3 to above the end of the cross beam 11, then the one or more middle sections 32 of the leg assembly 3 above the end of the cross beam 11 are removed and the middle sections 32 are mounted to the truck 8, wherein when the plurality of middle sections 32 are removed, if the removed middle sections 32 are uniform in height, then optionally one of them is mounted to the truck 8, and if the removed middle sections 32 are non-uniform in height, then the shorter one of them is mounted to the truck 8, so that the overall hoist height of the truck on the truck 8 is lower when the middle section 32 mounted to the truck 8 is used as a new bracket to support the beam assembly 1, to ensure a smooth bridge crane passing through the overhead bridge. After the middle segment 32 is mounted on the carriage 8, the carriage 8 moves below the frame beam assembly 1 and lifts the leg portions 33 of the frame beam assembly 1 to the leg assembly 3 off the ground, thereby transporting the crane through the bridge opening of the overpass.
It should be noted that the hoist has a plurality of leg assemblies 3, and the operations of the disassembling portions and the leg portions 33 on the plurality of leg assemblies 3 should be kept identical.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (10)
1. A height-adjustable pier hoisting machine, comprising:
A frame beam assembly (1) comprising a cross beam (11);
the hoisting mechanism (2) is arranged on the frame beam assembly (1) and used for hoisting the prefabricated bridge pier to be assembled;
-a leg assembly (3) for supporting the frame beam assembly (1);
the landing leg assembly (3) comprises a disassembling part and a landing leg part (33), wherein the upper end of the disassembling part is connected with the cross beam (11) and penetrates through the end part of the cross beam (11), the lower end of the disassembling part is detachably connected with the landing leg part (33), and the cross beam (11) is suitable for moving on the disassembling part and the landing leg part (33);
The frame beam assembly (1) further comprises a main beam (12), wherein the main beam (12) is arranged between the two cross beams (11), and two ends of the main beam (12) are respectively connected with the two cross beams (11);
The height-adjustable bridge pier hoisting machine further comprises a running mechanism (4), the running mechanism (4) comprises a frame (41) and a wheel set (42), the frame (41) is used for connecting the wheel set (42) with the supporting leg portion (33), and the running mechanism (4) is suitable for rotating relative to the supporting leg portion (33).
2. The height-adjustable pier hoisting machine of claim 1, wherein the splitting part comprises a plurality of segments, and the segments are sequentially arranged from top to bottom and are detachably connected with each other.
3. The height-adjustable pier hoisting machine according to claim 1, further comprising a climbing mechanism (5), wherein one end of the climbing mechanism (5) is arranged at the end part of the cross beam (11), the other end of the climbing mechanism (5) is sleeved on the supporting leg assembly (3), and the end part of the cross beam (11) is in sliding connection with the supporting leg assembly (3) through the climbing mechanism (5).
4. A height-adjustable bridge pier hoisting machine as claimed in claim 3, characterized in that the climbing mechanism (5) comprises a positioning seat (51) and a telescopic rod (52), the positioning seat (51) is sleeved on the supporting leg assembly (3) and is in sliding connection with the supporting leg assembly (3), one end of the telescopic rod (52) is fixed on the positioning seat (51), and the other end is fixed on the cross beam (11).
5. The height-adjustable pier hoisting machine as claimed in claim 4, wherein the detaching part and the supporting leg part (33) are provided with positioning holes (34), and the positioning seat (51) and the detaching part or the supporting leg part (33) are adapted to be detachably connected at the positioning holes (34) through locking structures.
6. A height adjustable bridge pier hoisting machine as claimed in any one of claims 1-5, characterized in that the running gear (4) further comprises a telescopic member (43) arranged at the end of the frame (41) remote from the leg portion (33), and that one end of the telescopic member (43) is fixed to the frame (41) and the other end is adapted to be supported on the ground or separated from the ground.
7. The height-adjustable bridge pier hoisting machine of claim 6, wherein the wheel set (42) comprises a plurality of running wheels, the telescoping member (43) being located between the plurality of running wheels.
8. The height-adjustable bridge pier hoisting machine according to any one of claims 1-5, wherein the hoisting mechanism (2) comprises a hoisting machine (21), a hoisting trolley (22), a hoisting tool (23) and a traversing cylinder, the hoisting machine (21) is arranged on the beam (11), the hoisting trolley (22) is arranged on the main beam (12), the hoisting tool (23) is arranged below the hoisting trolley (22) and is suitable for being connected with the prefabricated bridge piers to be assembled, one end of the traversing cylinder is fixed on the main beam (12), the other end of the traversing cylinder is fixed on the hoisting trolley (22), and the hoisting trolley (22) is suitable for moving along the length direction of the main beam (12) through the traversing cylinder on the main beam (12).
9. A construction method for erecting a prefabricated pier using the height-adjustable pier hoisting machine according to any one of claims 1 to 8, comprising:
step 1, a transport vehicle (8) transports a pier column (71) to enter the lower part of the height-adjustable pier hoisting machine, the height-adjustable pier hoisting machine hoistes the pier column (71), and the pier column (71) is vertically installed on a pier to be hoisted;
Step 2, the transport vehicle (8) transports a bridge pier bent cap (72) to enter the lower part of the height-adjustable bridge pier lifting machine, and the height-adjustable bridge pier lifting machine lifts the bridge pier bent cap (72) and moves the bridge pier bent cap to the upper part of the bridge pier upright post (71) so as to assemble the bridge pier bent cap (72) and the bridge pier upright post (71);
Step 3, the transportation vehicle (8) transports a pier end beam (73) to enter the lower part of the height-adjustable pier hoisting machine, and the height-adjustable pier hoisting machine hoistes the pier end beam (73) and moves to the end part of the pier capping beam (72) so as to assemble the pier end beam (73) and the pier capping beam (72);
and 4, repeating the step 3 to finish the assembly of the other pier end beam (73).
10. A method for passing an overpass of a height-adjustable pier hoist using the height-adjustable pier hoist according to any one of claims 1 to 8, comprising:
Step a, a frame beam assembly (1) of the height-adjustable bridge pier hoisting machine falls, a split part of a supporting leg assembly (3) of the height-adjustable bridge pier hoisting machine is disassembled, the split part is mounted on a transport vehicle (8) to serve as a bracket, and the transport vehicle (8) runs below the height-adjustable bridge pier hoisting machine;
step b, the frame beam assembly (1) falls onto the bracket;
Step c, the transport vehicle (8) lifts the frame beam assembly (1) to the supporting leg parts (33) of the supporting leg assembly (3) leave the ground, and the transport vehicle (8) transports the height-adjustable bridge pier hoisting machine through a bridge opening of the overpass.
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| CN202010571913.4A CN111675112B (en) | 2020-06-22 | 2020-06-22 | A height-adjustable bridge pier hoisting machine, construction method and overpass method |
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| CN202010571913.4A CN111675112B (en) | 2020-06-22 | 2020-06-22 | A height-adjustable bridge pier hoisting machine, construction method and overpass method |
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| CN113668406B (en) * | 2021-09-26 | 2023-04-11 | 河南国基建设集团有限公司 | Municipal construction prefabricated pier erecting device and erecting method thereof |
| CN115976981A (en) * | 2022-12-15 | 2023-04-18 | 中铁工程机械研究设计院有限公司 | Outrigger mechanism and bridge erecting machine in bridge erecting machine |
| JP7467731B1 (en) | 2023-05-30 | 2024-04-15 | 大成建設株式会社 | Method for assembling and dismantling construction equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09136788A (en) * | 1995-09-11 | 1997-05-27 | Ohbayashi Corp | Hoist and transfer device and method thereof |
| CN213059940U (en) * | 2020-06-22 | 2021-04-27 | 中铁工程机械研究设计院有限公司 | Pier hoisting machine with adjustable height |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5184248B2 (en) * | 2008-07-31 | 2013-04-17 | 鹿島建設株式会社 | Construction method of level crossing |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09136788A (en) * | 1995-09-11 | 1997-05-27 | Ohbayashi Corp | Hoist and transfer device and method thereof |
| CN213059940U (en) * | 2020-06-22 | 2021-04-27 | 中铁工程机械研究设计院有限公司 | Pier hoisting machine with adjustable height |
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