CN110878532B - Subway box girder translation construction device and method - Google Patents
Subway box girder translation construction device and method Download PDFInfo
- Publication number
- CN110878532B CN110878532B CN201911229113.8A CN201911229113A CN110878532B CN 110878532 B CN110878532 B CN 110878532B CN 201911229113 A CN201911229113 A CN 201911229113A CN 110878532 B CN110878532 B CN 110878532B
- Authority
- CN
- China
- Prior art keywords
- box girder
- jack
- fixed
- transverse
- moving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 title claims abstract description 49
- 238000013519 translation Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000012951 Remeasurement Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- 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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明公开了一种地铁箱梁平移施工装置及方法，涉及地铁施工领域，该装置的移动机构包括移动横梁，移动横梁上安装的第一滑块和第二滑块对称设置在移动横梁的两侧，第一滑块和第二滑块的顶端分别设有用于升降的顶升结构，顶升结构的顶端设有滑动机构；移动横梁的下端设有活动的滚动结构；滑动机构包括呈“十”字型交叉设置的横向滑道和纵向滑道，且分别安装有用于连接和带动箱梁移动的滚轮小车，横向滑道和纵向滑道的两端均设有支撑结构。该装置能够通过调整将箱梁平移到设计位置，提高了箱梁的施工效率，同时使用方便，还能够多次重复使用，节约大量的人力和物力。该装置的使用方法，能让施工平移箱梁方便同时还能够稳定实现箱梁的平移。
The invention discloses a subway box girder translation construction device and method, and relates to the field of subway construction. The tops of the first slider and the second slider are respectively provided with a jacking structure for lifting, and the top of the jacking structure is provided with a sliding mechanism; the lower end of the moving beam is provided with a movable rolling structure; the sliding mechanism includes a "ten" The transverse slideway and the longitudinal slideway are arranged crosswise in the shape of "", and a roller trolley for connecting and driving the box girder to move is respectively installed, and both ends of the transverse slideway and the longitudinal slideway are provided with support structures. The device can translate the box girder to the design position through adjustment, which improves the construction efficiency of the box girder, is convenient to use, and can be reused many times, saving a lot of manpower and material resources. The use method of the device can facilitate the construction and translation of the box girder, and can also realize the stable translation of the box girder.
Description
Technical Field
The invention relates to the field of subway construction, in particular to a subway box girder translation construction device and method.
Background
With the development of urban subways, large bridges in subway construction are gradually increased, large-span box girders are widely applied in design, and the members have the characteristics of large volume, heavy weight, high requirement on installation precision and the like, need to be installed in a limited space for secondary use, and are installed in place. The existing box girder translation construction basically comprises the steps of prefabricating a box girder in a prefabrication field, then using a girder transporting trolley to transport the prefabricated girder to a construction field, then hoisting the box girder at a preset position through a bridge girder erection machine or large-scale hoisting equipment, and hoisting the prefabricated box girder at a designed position through the cooperation of constructors on the site. In this work progress, it needs large-scale equipment to hang and put the box girder, need close cooperation of hoisting personnel and site operation personnel simultaneously, exchange communication at any time, just can lay the design position with bridge girder erection machine or large-scale hoisting equipment with the box girder hoist and mount, a large amount of personnel cooperate like this, it is more troublesome to link up, the installation needs to spend a large amount of time simultaneously, meet higher pier or weak soil property in addition and just need use special hoisting equipment or can only need spend a large amount of money with bridge girder erection machine even and realize hanging, be unfavorable for the hoist and mount construction of box girder.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a subway box girder translation construction device and method. The use method of the device can facilitate the construction of translating the box girder and can also stably realize the translation of the box girder.
The purpose of the invention is realized by the following technical scheme:
a subway box girder translation construction device comprises a moving mechanism and a sliding mechanism; the moving mechanism comprises a moving beam, a first sliding block and a second sliding block which slide are mounted on the moving beam, the first sliding block and the second sliding block are symmetrically arranged on two sides of the moving beam, jacking structures used for lifting are respectively arranged at the top ends of the first sliding block and the second sliding block, and a sliding mechanism is arranged at the top end of each jacking structure; the lower end of the movable cross beam is provided with a movable rolling structure; the sliding mechanism comprises a transverse slideway and a longitudinal slideway which are crossed in a cross shape, roller trolleys used for connecting and driving the box girder to move are respectively arranged on the transverse slideway and the longitudinal slideway, and supporting structures are respectively arranged at two ends of the transverse slideway and the longitudinal slideway;
the rolling structure comprises movable beams symmetrically arranged on two sides of the movable beam, longitudinal pushing jacks are symmetrically arranged at one ends of the movable beams far away from the movable beams, and positioning seats are respectively fixed at the other ends of the longitudinal pushing jacks.
By adopting the technical scheme, the moving mechanism of the device comprises a moving beam, the moving beam is provided with a first sliding block and a second sliding block which slide, and the first sliding block and the second sliding block are used for driving jacking structures which are respectively arranged at the top ends of the first sliding block and the second sliding block; the sliding mechanism comprises a transverse slide way and a longitudinal slide way which are crossed in a cross shape, and rails for longitudinally and transversely moving the roller trolleys arranged on the transverse slide way and the longitudinal slide way respectively so as to facilitate the connection of the roller trolleys and the box girder needing to be translated, and the roller trolleys move on the transverse slide way and the longitudinal slide way to drive the box girder to move along with the roller trolleys, so that the translation of the box girder is realized; the device can be through the adjustment with box roof beam translation to design position, has improved the efficiency of construction of box roof beam.
Preferably, a connecting plate is arranged between the first sliding block and the second sliding block, the connecting plate is movably arranged on the top surface of the movable cross beam, one end of the connecting plate is fixed with the first sliding block, and the other end of the connecting plate is fixed with the second sliding block.
Through adopting above-mentioned technical scheme, the connecting plate activity sets up the top surface at the movable cross beam, and one end is fixed with first slider, and the other end is fixed with the second slider to this passes through the connecting plate to be connected first slider and second slider together, realizes the purpose that first slider and second slider moved together with this.
Preferably, the jacking structure comprises a first jacking jack and a second jacking jack, and the top ends of the first jacking jack and the second jacking jack are in movable contact with the transverse slideways respectively; a first fixed seat is fixed on the outer wall of the upper end of the oil cylinder of the first jacking jack, a second fixed seat is fixed on the outer wall of the upper end of the oil cylinder of the second jacking jack, and a fixed plate is connected between the first fixed seat and the second fixed seat;
the top of first slider is fixed with the push pedal, the one end of push pedal with first fixing base is fixed, the other end of push pedal is fixed with the lateral propulsion jack, the other end of lateral propulsion jack is fixed with fixed pedestal, the other end of fixed pedestal with the movable beam is fixed.
By adopting the technical scheme, the first jacking jack and the second jacking jack of the jacking structure are respectively in movable contact with the transverse slideway, and the first fixed seat fixed on the outer wall of the upper end of the oil cylinder of the first jacking jack is connected with the second fixed seat fixed on the outer wall of the upper end of the oil cylinder of the second jacking jack through the fixed plate, so that the first jacking jack and the second jacking jack can move together under the action of external force; and the transverse pushing jack moves to drive the push plate fixed at one end of the transverse pushing jack to move, so that the first sliding block fixed with the push plate moves to drive the second sliding block to move.
Preferably, the lower end of the movable beam is respectively fixed with a sliding chute matched with the movable beam, and the bottom surface of the other end of the movable beam is respectively connected with a movable roller; and two ends of the bottom surface of the movable cross beam are also connected with rollers.
Through adopting above-mentioned technical scheme, movable beam's lower extreme is fixed with the spout with walking beam looks adaptation respectively to alright in order to realize two walking beams in the spout internalization, so that adjust the device's position, and the gyro wheel aim at of walking beam and movable beam setting conveniently removes the device, lets the device convenient to use, can also used repeatedly many times, thereby practices thrift a large amount of manpowers and material resources.
Preferably, a plurality of bolts are symmetrically arranged on each positioning seat, and the positioning seats are connected with the ground through the bolts.
By adopting the technical scheme, the movable beam can be driven to move on the two movable beams by the movement of the longitudinal propelling jack so as to adjust the device to the optimal beam moving position; when the jack is used, the plurality of bolts of the positioning seat are fixed with the ground, so that a supporting platform is provided for the longitudinal pushing jack, and the moving effect of the longitudinal pushing jack is achieved.
Preferably, the supporting structure comprises a telescopic rod for supporting, two ends of the transverse slideway and the longitudinal slideway are respectively fixed with the top end of the telescopic rod, and the other end of the telescopic rod is in contact with the ground.
By adopting the technical scheme, the telescopic rod provides a supporting structure for the transverse slideway and the longitudinal slideway so as to support the load of the box girder on the transverse slideway and the longitudinal slideway.
A method of a subway box girder translation construction device comprises the following steps:
s1: firstly, remeasuring the elevation of the pier by using a level gauge, adjusting the height of a base cushion layer for supporting the box girder according to remeasurement data so as to determine that the height of the base cushion layer and the bottom surface of the base installation position of the pier is at the same elevation, symmetrically arranging two temporary supports on the base cushion layer of the pier, and arranging a hydraulic jack below each temporary support, wherein the temporary supports are used for temporarily supporting the box girder;
s2: then moving the device to a position of a pre-drawn installation positioning line on a pier, adjusting a transverse pushing jack and two longitudinal pushing jacks of the device, enabling a first jacking jack and a second jacking jack of the device to be symmetrical on two sides of the center of a movable cross beam, aligning the intersection point of a transverse slideway and a longitudinal slideway with the center of the movable cross beam, and then marking scales on the transverse slideway and the longitudinal slideway; after the device is assembled, debugged and leveled, fixedly connecting the two positioning seats with the pier by using bolts, and hoisting the box girder to the upper part of the device after confirming that no error exists;
s3: lifting the hydraulic jack of S1, lifting the two temporary supports to a height higher than the top surface of the roller trolley of the device, slowly hoisting the box girder onto the two temporary supports, then adjusting the heights of the two hydraulic jacks, and leveling the box girder hoisted on the two temporary supports;
s4: then slowly descending the two hydraulic jacks, aligning a connecting seat which is preset at the bottom of the box girder and is used for connecting a roller trolley with the roller trolley on the transverse slideway, connecting the connecting seat with the roller trolley, transversely adjusting the position of a beam moving jack in the transverse direction of the box girder far away from the translation direction, abutting one end of the beam moving jack against a stop block fixed on a pier, abutting the other end of the beam moving jack against the roller trolley on the transverse slideway, respectively adjusting the transverse beam moving jack, and driving the box girder to move on the transverse slideway by the roller trolley to move the box girder to a transversely designed position;
s5: then, a first jacking jack and a second jacking jack are adjusted downwards, telescopic rods connected with two ends of the transverse slideway and two ends of the longitudinal slideway respectively are contracted, the box girder at the moment is supported by the two temporary supports, the device is translated to a central line below the box girder, the steps S2 and S3 are repeated, the positions of the device and the box girder are adjusted, a connecting seat which is preset at the bottom of the box girder and used for connecting a roller trolley is aligned with the roller trolley on the transverse slideway, the connecting seat is connected with the roller trolley, the position of the beam-moving jack is adjusted longitudinally far away from the translation direction of the box girder, one end of the beam-moving jack abuts against a stop block fixed on a pier, the other end of the beam-moving jack abuts against the roller trolley on the longitudinal slideway, then the longitudinal beam-moving jack is adjusted respectively, the roller trolley drives the box girder to move on the longitudinal slideway, and the box girder is moved to a longitudinally designed position;
s6: after the box girder is in place, mounting a permanent support at the designed position of the base cushion layer, then descending the first jacking jack, the second jacking jack and the telescopic rods arranged on the bottom surfaces of the two ends of the transverse slideway and the longitudinal slideway in a contracting manner, then separating the two roller trolleys from the connecting seats, and withdrawing the device; and then slowly descending the heights of the two hydraulic jacks, separating the two temporary supports from the bottom surface of the box girder, withdrawing the temporary supports, allowing the box girder to fall on the permanent supports, connecting the permanent supports and the box girder, and completing the translation construction of the box girder.
By adopting the technical scheme, the use method of the device can ensure that the device can realize the effect of stably translating the box girder, and the method can save a large amount of manpower and material resources when in use, greatly improves the translation effect of the box girder and is beneficial to ensuring the smooth construction.
The invention has the beneficial effects that:
1. the moving mechanism of the device comprises a moving beam, wherein the moving beam is provided with a first sliding block and a second sliding block which slide, and the first sliding block and the second sliding block are used for driving jacking structures which are respectively arranged at the top ends of the first sliding block and the second sliding block, the jacking structures can be lifted so as to adjust the sliding mechanism arranged at the top end of the jacking structure, and meanwhile, the lower end of the moving beam is provided with a movable rolling structure which is used for adjusting the device to move; the sliding mechanism comprises a transverse slide way and a longitudinal slide way which are crossed in a cross shape, and rails for longitudinally and transversely moving the roller trolleys arranged on the transverse slide way and the longitudinal slide way respectively so as to facilitate the connection of the roller trolleys and the box girder needing to be translated, and the roller trolleys move on the transverse slide way and the longitudinal slide way to drive the box girder to move along with the roller trolleys, so that the translation of the box girder is realized; the device can be through the adjustment with box roof beam translation to design position, has improved the efficiency of construction of box roof beam.
2. The connecting plate is movably arranged on the top surface of the movable cross beam, one end of the connecting plate is fixed with the first sliding block, and the other end of the connecting plate is fixed with the second sliding block, so that the first sliding block and the second sliding block are connected together through the connecting plate, and the purpose of moving the first sliding block and the second sliding block together is achieved; the first jacking jack and the second jacking jack of the jacking structure are respectively in movable contact with the transverse slideway, and the first fixing seat fixed on the outer wall of the upper end of the oil cylinder of the first jacking jack and the second fixing seat fixed on the outer wall of the upper end of the oil cylinder of the second jacking jack are connected through the fixing plate, so that the first jacking jack and the second jacking jack can move together under the action of external force.
3. The transverse pushing jack moves to drive the push plate fixed at one end of the transverse pushing jack to move, so that the first sliding block fixed with the push plate moves to drive the second sliding block to move; the lower extreme of walking beam is fixed with the spout with walking beam looks adaptation respectively to alright in order to realize two walking beams in the spout internalization, so that adjust the device's position, and the gyro wheel aim at of walking beam and walking beam setting conveniently removes the device, lets the device convenient to use, can also used repeatedly many times, thereby practices thrift a large amount of manpowers and material resources.
4. The movement of the longitudinal pushing jack can drive the movable beam to move on the two movable beams so as to adjust the device to the optimal beam moving position; when the jack is used, a plurality of bolts of the positioning seat are fixed with the ground, so that a supporting platform is provided for the longitudinal pushing jack, and the moving effect of the longitudinal pushing jack is realized; the telescoping poles provide a support structure for the transverse and longitudinal runners for supporting the load of the box girder on the transverse and longitudinal runners.
5. The use method of the device can ensure that the device realizes the effect of stably translating the box girder, and the method can save a large amount of manpower and material resources, greatly improve the translation effect of the box girder and be beneficial to ensuring the smooth construction.
Drawings
FIG. 1 is a schematic structural view of a subway box girder translation construction device according to the present invention;
FIG. 2 is a schematic axial view of a subway box girder translation construction apparatus according to the present invention;
FIG. 3 is a schematic front view of a subway box girder translation construction apparatus according to the present invention;
FIG. 4 is a schematic bottom view of the horizontal movement construction device for the subway box girder according to the present invention;
fig. 5 is a schematic view of the use of the translation box girder of the subway box girder translation construction device.
In the figure, 1-a movable cross beam, 2-a transverse slideway, 3-a longitudinal slideway, 4-a roller trolley, 5-a first jacking jack, 6-a second jacking jack, 7-a fixed plate, 8-a movable beam, 9-a longitudinal pushing jack, 10-a telescopic rod, 11-a first sliding block, 12-a second sliding block, 13-a connecting plate, 51-a first fixed seat, 52-a push plate, 53-a transverse pushing jack, 54-a fixed pedestal, 61-a second fixed seat and 91-a positioning seat.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 1 to 5, a subway box girder translation construction device includes a moving mechanism and a sliding mechanism; the moving mechanism comprises a moving beam 1, a first sliding block 11 and a second sliding block 12 which slide are mounted on the moving beam 1, the first sliding block 11 and the second sliding block 12 are symmetrically arranged on two sides of the moving beam 1, jacking structures used for lifting are respectively arranged at the top ends of the first sliding block 11 and the second sliding block 12, and a sliding mechanism is arranged at the top end of each jacking structure; the lower end of the movable beam 1 is provided with a movable rolling structure; the sliding mechanism comprises a transverse slide way 2 and a longitudinal slide way 3 which are crossed in a cross shape, roller trolleys 4 used for connecting and driving the box girder to move are respectively arranged on the transverse slide way 2 and the longitudinal slide way 3, and supporting structures are respectively arranged at two ends of the transverse slide way 2 and two ends of the longitudinal slide way 3. The moving mechanism of the device comprises a moving beam 1, wherein the moving beam 1 is provided with a first sliding block 11 and a second sliding block 12 which slide, and the first sliding block 11 and the second sliding block 12 are used for driving jacking structures which are respectively arranged at the top ends of the first sliding block 11 and the second sliding block 12, the jacking structures can be lifted so as to adjust the sliding mechanism arranged at the top end of the jacking structure, and meanwhile, the lower end of the moving beam 1 is provided with a movable rolling structure which is used for adjusting the device to move; the sliding mechanism comprises a transverse slide way and a longitudinal slide way 2 3 which are crossed in a cross shape, and rails which are used for longitudinally and transversely moving roller trolleys 4 respectively arranged on the transverse slide way 2 and the longitudinal slide way 3 so that the roller trolleys 4 are connected with a box girder needing to be translated, and the roller trolleys 4 move on the transverse slide way 2 and the longitudinal slide way 3 to drive the box girder to move along with the roller trolleys 4, so that the box girder is translated; the device can be through the adjustment with box roof beam translation to design position, has improved the efficiency of construction of box roof beam.
When the device is implemented specifically, firstly, the device is placed at a position needing translation, the elevation of a pier is retested by a level gauge, the height of a base cushion layer for supporting a box girder is adjusted according to retested data, so that the height of the base cushion layer and the bottom surface of the base installation position of the pier are determined to be at the same elevation, two temporary supports are symmetrically placed on the base cushion layer of the pier, a hydraulic jack is placed below each temporary support, and the temporary supports are used for temporarily supporting the box girder; and then moving the device to the position of a pre-drawn installation positioning line on the pier for installation. The device comprises a moving mechanism and a sliding mechanism; the moving mechanism comprises a moving beam 1, a first sliding block 11 and a second sliding block 12 which slide are mounted on the moving beam 1, the first sliding block 11 and the second sliding block 12 are symmetrically arranged on two sides of the moving beam 1, jacking structures used for lifting are respectively arranged at the top ends of the first sliding block 11 and the second sliding block 12, and a sliding mechanism is arranged at the top end of each jacking structure; the lower end of the movable beam 1 is provided with a movable rolling structure, the rolling structure comprises movable beams 8 symmetrically arranged on two sides of the movable beam 1, the lower end of the movable beam 1 is respectively fixed with a chute matched with the movable beams 8, the bottom surfaces of the other ends of the movable beams 8 are respectively connected with movable rollers, and two ends of the bottom surface of the movable beam 1 are also connected with the rollers; and one end of the movable beam 1, which is far away from the movable beam 8, is symmetrically provided with longitudinal propulsion jacks 9, the other end of the longitudinal propulsion jacks 9 is respectively fixed with positioning seats 91, the positioning seats 91 are all provided with a plurality of bolts, and the positioning seats 91 are used for being connected with the ground. Connecting the two positioning seats 91 with the ground through bolts, then adjusting two longitudinal pushing jacks 9, pushing the movable beam 1 to the middle position of the two movable beams 8, enabling the movable beam 1 to be in the middle position, then adjusting a first slide block 11 and a second slide block 12 on the movable beam 1, enabling the movable beam 1 to be in the middle of the first slide block 11 and the second slide block 12 so as to be convenient for translating the box girder, and then adjusting the top ends of the first slide block 11 and the second slide block 12 to be respectively provided with a lifting structure for lifting, wherein the lifting structure comprises a first lifting jack 5 and a second lifting jack 6, and the top ends of the first lifting jack 5 and the second lifting jack 6 are respectively in movable contact with the transverse slideways 2; the method comprises the steps of lifting a first lifting jack 5 and a second lifting jack 6 to a designed moving height according to the designed height, then enabling the first lifting jack 5 and the second lifting jack 6 to be in movable contact with a transverse slideway 2 of a sliding mechanism, and respectively installing roller trolleys 4 used for connecting and driving a box girder to move on the transverse slideway 2 and a longitudinal slideway 3 of the sliding mechanism, wherein the number of the roller trolleys 4 arranged on the transverse slideway 2 and the longitudinal slideway 3 is set according to the weight of the box girder and the limit of the gravity borne by each roller trolley 4 so as to meet the requirement of box girder moving. Then the supporting structures arranged at the two ends of the transverse slideway 2 and the longitudinal slideway 3 are adjusted. The supporting structure comprises a telescopic rod 10 used for supporting, wherein two ends of a transverse slide way 2 and two ends of a longitudinal slide way 3 are respectively fixed with the top end of the telescopic rod 10, the other end of the telescopic rod 10 are in contact with the ground, the four telescopic rods 10 are stretched to enable one ends of the four telescopic rods to be in contact with the ground, the other ends of the four telescopic rods are respectively supported on the bottom surfaces of two ends of the transverse slide way 2 and the bottom surface of the longitudinal slide way 3, so that the transverse slide way 2 and the longitudinal slide way 3 can be supported, and the bearing capacity is large enough.
Further, the box girder needing to be translated is hung above the device, the hydraulic jacks below the two temporary supports are lifted, the two temporary supports are lifted to a height higher than the top surface of the roller trolley 4 of the device, then the box girder is slowly hung on the two temporary supports, then the heights of the two hydraulic jacks are adjusted, and the box girder hung on the two temporary supports is leveled; then slowly descending the two hydraulic jacks, aligning a connecting seat which is preset at the bottom of the box girder and is used for connecting the roller trolley 4 with the roller trolley 4, connecting the connecting seat with the roller trolley 4, then installing a beam moving jack in the transverse direction and the longitudinal direction of the box girder far away from the translation direction, adjusting the position of the beam moving jack, abutting one end of the beam moving jack against a stop block fixed on a pier, abutting the other end of the beam moving jack against the two roller trolleys 4 respectively, then adjusting the transverse beam moving jack and the longitudinal beam moving jack respectively, and driving the box girder to move on the transverse slide way 2 and the longitudinal slide way 3 by the roller trolley 4, and finally moving the box girder to the designed position.
The use method of the translation construction device comprises the following steps:
s1: firstly, remeasuring the elevation of the pier by using a level gauge, adjusting the height of a base cushion layer for supporting the box girder according to remeasurement data so as to determine that the height of the base cushion layer and the bottom surface of the base installation position of the pier is at the same elevation, symmetrically arranging two temporary supports on the base cushion layer of the pier, and arranging a hydraulic jack below each temporary support, wherein the temporary supports are used for temporarily supporting the box girder;
s2: then moving the device to a position of a pre-drawn installation positioning line on a pier, adjusting a transverse pushing jack 53 and two longitudinal pushing jacks 9 of the device, enabling a first jacking jack 5 and a second jacking jack 6 of the device to be symmetrical on two sides of the center of the movable cross beam 1, aligning the intersection point of a transverse slideway 2 and a longitudinal slideway 3 with the center of the movable cross beam 1, and then marking scales on the transverse slideway and the longitudinal slideway 3; after the device is assembled, debugged and leveled, the two positioning seats 91 are fixedly connected with the bridge pier by bolts, and the box girder is hoisted to the upper part of the device after no error is confirmed;
s3: lifting the hydraulic jack of S1, lifting the two temporary supports to a height higher than the top surface of the roller trolley 4 of the device, then slowly hoisting the box girder onto the two temporary supports, then adjusting the heights of the two hydraulic jacks, and leveling the box girder hoisted on the two temporary supports;
s4: then slowly descending the two hydraulic jacks, aligning a connecting seat which is preset at the bottom of the box girder and is used for connecting the roller trolley 4 with the roller trolley 4 on the transverse slideway 2, connecting the connecting seat with the roller trolley 4, then transversely adjusting the position of the beam moving jack far away from the translation direction of the box girder, abutting one end of the beam moving jack against a stop block fixed on a pier, abutting the other end of the beam moving jack against the roller trolley 4 on the transverse slideway 2, then respectively adjusting the transverse beam moving jack, and driving the box girder to move on the transverse slideway 2 by the roller trolley 4 so as to move the box girder to a transversely designed position;
s5: then the first jacking jack 5 and the second jacking jack 6 are adjusted downwards, the telescopic rods 10 respectively connected with the two ends of the transverse slideway 2 and the longitudinal slideway 3 are contracted, the two temporary supports support the box girder at the moment, the device is translated to the central line below the box girder, the steps S2 and S3 are repeated, the positions of the device and the box girder are adjusted, the connecting seat which is preset at the bottom of the box girder and used for connecting the roller trolley 4 is aligned with the roller trolley 4 on the transverse slideway 2, connecting the connecting seat with the roller trolley 4, longitudinally adjusting the position of the beam moving jack far away from the translation direction of the box beam, abutting one end of the beam moving jack against a stop block fixed on the pier, abutting the other end of the beam moving jack against the roller trolley 4 on the longitudinal slide way 3, then respectively adjusting longitudinal beam moving jacks to enable the roller trolley 4 to drive the box beam to move on the longitudinal slide rail 3, and moving the box beam to a longitudinally designed position;
s6: after the box girder is in place, mounting a permanent support at the designed position of the base cushion layer, then descending the first jacking jack 5, the second jacking jack 6 and the telescopic rods 10 which are contracted and arranged at the bottom surfaces of the two ends of the transverse slideway 2 and the longitudinal slideway 3, separating the two roller trolleys 4 from the connecting seats, and withdrawing the device; and then slowly descending the heights of the two hydraulic jacks, separating the two temporary supports from the bottom surface of the box girder, withdrawing the temporary supports, allowing the box girder to fall on the permanent supports, connecting the permanent supports and the box girder, and completing the translation construction of the box girder.
Preferably, in construction it is worth noting that:
1: and leveling. And (3) re-measuring the elevation of the abutment by using a level gauge every 0.5m within the range of the slide way, and adjusting the height difference of the base cushion layer according to re-measured data to ensure that the bottom surfaces of the base mounting positions of the same abutment are adjusted at the same elevation position, and the uneven positions of the positions need to be leveled by using mortar.
2: placing a beam moving slideway. According to the installation positioning line drawn in advance on the pier, the transverse slideway 2 and the longitudinal slideway 3 of the device are placed in place, and the quality control required for installing the transverse slideway 2 and the longitudinal slideway 3 is as follows:
quality control meter for slide installation
3: the roller trolley 4, the pump station, the transverse moving oil cylinder and the like are arranged to the designed moving position and are well debugged so as to be needed when the box girder is moved.
4: and (6) assembling and debugging. The roller trolley 4 and the screw jack are respectively installed on the slideway smoothly according to the equipment. After the movable beam is assembled, the movable beam can move without errors when the vehicle runs empty.
5: and leveling the box girder. Before the box girder moves, 4 hydraulic jacks of 200t are needed to jack the box girder from the temporary support, and the height of the box girder exceeds 4-5 cm of the device; the seat plate of the roller trolley 4 is pushed to the bottom of the box girder, the box girder is longitudinally aligned according to the led-out longitudinal girder end positioning line, the girder is slowly dropped on the top seat of the roller trolley 4 of the device to be connected after alignment is finished, the box girder is leveled through the girder moving trolley oil cylinder, and the girder can be moved after leveling.
6: moving the beam and the box beam in place;
the first step is as follows: scales are marked on the slide ways, the box girder traversing distance is required to be measured whether to be consistent or not, the box girder traversing distance is required to be measured when the distance exceeds 50mm, the box girder is required to be stopped for single-side adjustment, the box girder is moved after the adjustment is finished, and the box girder is transversely and longitudinally aligned by using the device after the box girder is moved to the position.
The second step is that: withdrawing the device and adjusting the elevation. And after the alignment is finished, the box girder is lifted by using the oil top, the device is emptied, and then the device is withdrawn. And adjusting elevation, and controlling the thickness of the mortar cushion layer within an allowable range.
The third step: and (5) placing the box girder in place, grouting the support and completing erection of the box girder with one hole.
After the top beam is ready, oil is slowly supplied to the two jacks at one end, an oil pressure gauge is not more than 5MPa/min, an oil pump driver needs to pay attention to the change of the oil gauge at any time, when the beam body is slightly jacked away from the slide way by the jacks, the oil valve is locked immediately, a steel plate is firstly padded, rubber pads are padded on the lowest layer and the uppermost layer of the steel plate, then the oil valve of the oil pump is opened, jacking is continued, the steel plate is padded, the circulation is alternately carried out, and the gap between the beam body and the pad stone is ensured to be slightly larger than the total height of the support.
7: and (7) mounting a support. After the beam body is jacked in place, the oil valve is locked, the longitudinal and transverse position deviations of the beam body are carefully checked, the plane position is adjusted by using the jack until the design requirements are met, and the permanent support can be installed. During the installation, should carry out elevation and span measurement, ensure that each support all satisfies the construction standard requirement, should guarantee the location accuracy of pier anchor bolt hole simultaneously, permanent support installation begins to fall the roof beam after finishing, until permanent support falls on the stone pad completely, carries out treatment work such as grout at last, connects permanent support and case roof beam, accomplishes the translation construction of case roof beam.
In this embodiment, the usage device schedule is as follows:
machinery and equipment material input plan
| Model of the device | Number of | Work content |
| |
1 set of | Sliding box girder |
| Hand |
8 tables | Inverted beam falling and temporary support |
| |
1 set of | Working platform for beam moving construction |
The parameters of the translation construction device are as follows:
main technical parameters of translation construction equipment
Meanwhile, the transverse movement of the beam adopts rail sliding, the sliding part adopts a stainless steel plate, and the contact surface is coated with grease for lubrication before construction.
The parameters of the roller trolley 4, the slideway and the beam moving jack of the device are as follows:
main technical parameters of roller trolley 4, slideway and beam-moving jack
| Serial number | Item | Parameters and |
|
| 1 | The overall dimension of the roller trolley is as follows: length, width and height | 965mm*191mm* |
|
| 2 | Length of | 10m | |
| 3 | Length of | 10m | |
| 4 | Rated |
4* |
|
| 5 | Moving mode | Beam-moving |
|
| 6 | Beam-moving jack stroke | 400mm |
Note that: the parameters of the trolley 4 of the roller of the beam-moving jack and the slideway are set according to the weight of the box girder, and meanwhile, because the side length of the slideway is long, a supporting structure (an expansion link 10) is required to be erected in the middle part so as to support the whole box girder. Considering the construction cost and the influence of traffic under the constructed beam body. The mode that adopts to build steel pipe support as construction platform is not only hard and the cost is great, consequently adopts the mode of hanging basket lift platform to act as construction platform. The platform is controlled to lift by the hoisting trolley, after a hole beam is moved, the platform falls to the ground and is transferred to the next hole from under the bridge, and accessories such as the hoisting trolley on the bridge, an oil station and the like are transferred to the beam moving position of the next hole through the beam groove and the cover beam.
Because the weight of the box girder is larger, when the device is used for translating the box girder, the number of the translated box girders can be adjusted according to the ultimate bearing capacity of the device, and the device is not limited to translate the box girder only by one device, but also can be synchronously realized by using a plurality of box girders; when the box girder is moved transversely and longitudinally, the device needs to be adjusted respectively, cannot be translated in place at one time, and special attention needs to be paid when the box girder is used.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A subway box girder translation construction device is characterized by comprising a moving mechanism and a sliding mechanism;
the moving mechanism comprises a moving beam (1), a first sliding block (11) and a second sliding block (12) which slide are mounted on the moving beam (1), the first sliding block (11) and the second sliding block (12) are symmetrically arranged on two sides of the moving beam (1), jacking structures used for lifting are respectively arranged at the top ends of the first sliding block (11) and the second sliding block (12), and a sliding mechanism is arranged at the top end of each jacking structure; the lower end of the movable cross beam (1) is provided with a movable rolling structure;
the sliding mechanism comprises a transverse slide way (2) and a longitudinal slide way (3) which are crossed in a cross shape, and the transverse slide way is
(2) The longitudinal slide way (3) is respectively provided with a roller trolley (4) for connecting and driving the box girder to move, and both ends of the transverse slide way (2) and the longitudinal slide way (3) are provided with supporting structures;
the rolling structure comprises movable beams (8) symmetrically arranged on two sides of the movable beam (1), wherein longitudinal pushing jacks (9) are symmetrically arranged at one ends, far away from the movable beams (8), of the movable beam (1), and positioning seats (91) are respectively fixed at the other ends of the longitudinal pushing jacks (9).
2. A subway box girder translation construction device according to claim 1, characterized in that a connecting plate (13) is arranged between said first slider (11) and said second slider (12), said connecting plate (13) is movably arranged on the top surface of said movable beam (1), one end of said connecting plate (13) is fixed with said first slider (11) and the other end is fixed with said second slider (12).
3. A metro box beam translation construction device according to claim 1, wherein the jacking structure comprises a first jacking jack (5) and a second jacking jack (6), the first jacking jack (5) and the second jacking jack (6)
(6) The top ends of the two sliding rails are respectively in movable contact with the transverse slide ways (2); a first fixed seat (51) is fixed on the outer wall of the upper end of the oil cylinder of the first jacking jack (5), a second fixed seat (61) is fixed on the outer wall of the upper end of the oil cylinder of the second jacking jack (6), and a fixed plate (7) is connected between the first fixed seat (51) and the second fixed seat (61);
the top of first slider (11) is fixed with push pedal (52), the one end of push pedal (52) with first fixing base (51) are fixed, the other end of push pedal (52) is fixed with transverse propulsion jack (53), the other end of transverse propulsion jack (53) is fixed with fixed pedestal (54), the other end of fixed pedestal (54) with movable beam (1) is fixed.
4. The subway box girder translation construction device according to claim 1, wherein sliding grooves matched with the movable beams (8) are respectively fixed at the lower ends of the movable beams (1), and movable rollers are respectively connected to the bottom surfaces of the other ends of the movable beams (8); and two ends of the bottom surface of the movable cross beam (1) are also connected with rollers.
5. The subway box girder construction device for translation according to claim 1, wherein said positioning seats (91) are symmetrically provided with a plurality of bolts, and said positioning seats (91) are connected to the ground through a plurality of bolts.
6. A metro box beam translation construction device according to claim 1, wherein the supporting structure comprises a frame
In telescopic link (10) of support, the both ends of horizontal slide (2) and longitudinal slide (3) respectively with the top of telescopic link (10) is fixed, the other end and the ground contact of telescopic link (10).
7. The method for the translation construction device of the subway box girder according to any one of claims 1 to 6, characterized by comprising the following steps:
s1: firstly, remeasuring the elevation of the pier by using a level gauge, adjusting the height of a base cushion layer for supporting the box girder according to remeasurement data so as to determine that the height of the base cushion layer and the bottom surface of the base installation position of the pier is at the same elevation, symmetrically arranging two temporary supports on the base cushion layer of the pier, and arranging a hydraulic jack below each temporary support, wherein the temporary supports are used for temporarily supporting the box girder;
s2: then moving the device to a position of a pre-drawn installation positioning line on a pier, adjusting a transverse pushing jack (53) and two longitudinal pushing jacks (9) of the device, enabling a first jacking jack (5) and a second jacking jack (6) of the device to be symmetrical on two sides of the center of the movable cross beam (1), aligning the intersection point of a transverse slideway (2) and a longitudinal slideway (3) to the center of the movable cross beam (1), and marking scales on the transverse slideway and the longitudinal slideway (3); after the device is assembled, debugged and leveled, fixedly connecting the two positioning seats (91) with the bridge pier by using bolts, and hoisting the box girder to the position above the device after confirming that no error exists; s3: lifting the hydraulic jacks of S1, lifting the two temporary supports to a height higher than the top surface of the roller trolley (4) of the device, slowly hoisting the box girder onto the two temporary supports, then adjusting the heights of the two hydraulic jacks, and leveling the box girder hoisted on the two temporary supports;
s4: then slowly descending the two hydraulic jacks, aligning a connecting seat which is preset at the bottom of the box girder and is used for connecting a roller trolley (4) with the roller trolley (4) on the transverse slide way (2), connecting the connecting seat with the roller trolley (4), transversely adjusting the position of a beam moving jack in the direction far away from the translation direction of the box girder, abutting one end of the beam moving jack against a stop block fixed on a pier, abutting the other end of the beam moving jack against the roller trolley (4) on the transverse slide way (2), respectively adjusting the transverse beam moving jacks, driving the box girder to move on the transverse slide way (2) by the roller trolley (4), and moving the box girder to a transversely designed position;
s5: then a first jacking jack (5) and a second jacking jack (6) are adjusted downwards, telescopic rods (10) respectively connected with two ends of a transverse slideway (2) and a longitudinal slideway (3) are contracted, the box girder at the moment is supported by two temporary supports, the device is translated to a central line below the box girder, S2 and S3 steps are repeated, the position of the device and the box girder is adjusted, a connecting seat which is preset at the bottom of the box girder and used for connecting a roller trolley (4) is aligned with the roller trolley (4) on the transverse slideway (2), the connecting seat is connected with the roller trolley (4), the position of a beam moving jack is adjusted longitudinally in a direction far away from the translation direction of the box girder, one end of the connecting seat is abutted against a stop block fixed on a pier, the other end of the connecting seat is abutted against the roller trolley (4) on the longitudinal slideway (3), and then the longitudinal beam moving jacks are respectively adjusted, the roller trolley (4) drives the box girder to move on the longitudinal slideway (3) and moves the box girder to a longitudinally designed position;
s6: after the box girder is in place, a permanent support is arranged at the designed position of the base cushion layer, and then the first jacking jack is descended
(5) The second jacking jack (6) and telescopic rods (10) which are contracted and arranged on the bottom surfaces of the two ends of the transverse slideway (2) and the longitudinal slideway (3) are arranged, then the two roller trolleys (4) are separated from the connecting seat, and the device is withdrawn; and then slowly descending the heights of the two hydraulic jacks, separating the two temporary supports from the bottom surface of the box girder, withdrawing the temporary supports, allowing the box girder to fall on the permanent supports, connecting the permanent supports and the box girder, and completing the translation construction of the box girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911229113.8A CN110878532B (en) | 2019-12-04 | 2019-12-04 | Subway box girder translation construction device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911229113.8A CN110878532B (en) | 2019-12-04 | 2019-12-04 | Subway box girder translation construction device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110878532A CN110878532A (en) | 2020-03-13 |
| CN110878532B true CN110878532B (en) | 2021-12-07 |
Family
ID=69729824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911229113.8A Expired - Fee Related CN110878532B (en) | 2019-12-04 | 2019-12-04 | Subway box girder translation construction device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110878532B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016618B (en) * | 2021-11-04 | 2023-01-10 | 山东建筑大学 | a lifting device |
| CN114104988B (en) * | 2021-11-24 | 2024-03-22 | 中能建建筑集团有限公司 | Box girder hoisting equipment with adjustable height and use method thereof |
| CN114293910B (en) * | 2022-01-04 | 2023-09-22 | 四川宏华石油设备有限公司 | Derrick pulling device, well head alignment method thereof and derrick pulling system |
| CN118639564B (en) * | 2024-06-28 | 2026-01-06 | 中铁七局集团有限公司 | A method for intelligent continuous lateral movement construction of railway box girders adjacent to existing high-speed railways |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201428112Y (en) * | 2009-05-25 | 2010-03-24 | 中铁十二局集团有限公司 | Push trolley device for installation and removal of steel side template |
| CN201458684U (en) * | 2009-05-26 | 2010-05-12 | 李雪东 | Three-dimensional hydraulic moving pick |
| CN101967800A (en) * | 2010-11-17 | 2011-02-09 | 中铁二十四局集团有限公司 | Erecting, pushing and sliding method of steel box beam |
| KR101134290B1 (en) * | 2011-03-08 | 2012-04-13 | (주)삼현피에프 | Method of constructing prestressed concrete box girder bridge |
| CN102691264A (en) * | 2012-05-16 | 2012-09-26 | 天津市公路工程总公司 | Slipping slot type cross transfer device and method for assisting hoisting of large-size box girder |
| CN104389272A (en) * | 2014-10-09 | 2015-03-04 | 中建钢构有限公司 | Multifunctional movable operating platform |
| CN205443941U (en) * | 2015-10-14 | 2016-08-10 | 中建钢构有限公司 | Suspension bridge pushing device and top push away system |
| CN207983123U (en) * | 2018-03-06 | 2018-10-19 | 无锡市荣华机械制造有限公司 | A kind of novel three axis outer circle compound grinding machine auto-feeder |
| CN208377436U (en) * | 2018-06-14 | 2019-01-15 | 四川省卓辰精密机械制造有限公司 | A kind of valve block products storage device |
-
2019
- 2019-12-04 CN CN201911229113.8A patent/CN110878532B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201428112Y (en) * | 2009-05-25 | 2010-03-24 | 中铁十二局集团有限公司 | Push trolley device for installation and removal of steel side template |
| CN201458684U (en) * | 2009-05-26 | 2010-05-12 | 李雪东 | Three-dimensional hydraulic moving pick |
| CN101967800A (en) * | 2010-11-17 | 2011-02-09 | 中铁二十四局集团有限公司 | Erecting, pushing and sliding method of steel box beam |
| KR101134290B1 (en) * | 2011-03-08 | 2012-04-13 | (주)삼현피에프 | Method of constructing prestressed concrete box girder bridge |
| CN102691264A (en) * | 2012-05-16 | 2012-09-26 | 天津市公路工程总公司 | Slipping slot type cross transfer device and method for assisting hoisting of large-size box girder |
| CN104389272A (en) * | 2014-10-09 | 2015-03-04 | 中建钢构有限公司 | Multifunctional movable operating platform |
| CN205443941U (en) * | 2015-10-14 | 2016-08-10 | 中建钢构有限公司 | Suspension bridge pushing device and top push away system |
| CN207983123U (en) * | 2018-03-06 | 2018-10-19 | 无锡市荣华机械制造有限公司 | A kind of novel three axis outer circle compound grinding machine auto-feeder |
| CN208377436U (en) * | 2018-06-14 | 2019-01-15 | 四川省卓辰精密机械制造有限公司 | A kind of valve block products storage device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110878532A (en) | 2020-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110878532B (en) | Subway box girder translation construction device and method | |
| CN109183618B (en) | Bridge girder erection machine for rapid construction of prefabricated bridge | |
| CN111038940B (en) | Rail-mounted traction system for hoisting and transporting | |
| CN106320713B (en) | 3D building printing operation platform | |
| CN103030070B (en) | A kind of can the transfer crane of traveling and operation on ramp | |
| CN111455852A (en) | Assembling method of movable formwork for bridge construction | |
| CN102704953A (en) | module unit butt joint combining device and method for tunnel secondary lining trolley | |
| CN115710862A (en) | Steel girder construction accurate installation system and construction method | |
| CN111608089A (en) | A construction method and construction system of a large longitudinal slope integral bridge erecting machine over span | |
| CN211772954U (en) | Simple sliding device vehicle for replacing high-speed railway continuous beam support | |
| CN113774813A (en) | Traction deviation rectifying equipment convenient for installing large-section steel truss box girder | |
| CN114607396B (en) | Shield or TBM in-situ rotation and translation jacking system and construction method | |
| CN214828751U (en) | Auxiliary support platform for hoisting steel structure truss | |
| CN111395176B (en) | Mobile formwork lowering and dismantling construction method based on convenience | |
| CN206245344U (en) | An installation vehicle used for assembling prefabricated and assembled comprehensive pipe gallery | |
| CN211711873U (en) | Rail mounted is used for hoist and mount traction system of transportation | |
| CN102145353B (en) | O-forming machine mounting method | |
| CN113233343A (en) | Erection equipment, erection method and method for preventing plane from being too high or too low | |
| CN115059509B (en) | Dynamic counterweight vehicle in tunnel for anti-floating measures in pipe jacking tunnel construction | |
| CN201598572U (en) | Large-span segment assembly bridge fabrication machine | |
| CN211142825U (en) | Simple universal beam transporting trolley | |
| CN111113644B (en) | Assembled culvert channel movable formwork system and prefabrication construction method | |
| CN116348408A (en) | An intelligent hoisting robot | |
| CN203048438U (en) | Door type hoist capable of traveling and operating on slope | |
| CN115788522B (en) | A temporary support system and construction method for installing a corridor above a subway tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211207 |