CN112376436A - Bridge supports adjusting device for bridge construction - Google Patents
Bridge supports adjusting device for bridge construction Download PDFInfo
- Publication number
- CN112376436A CN112376436A CN202011332079.XA CN202011332079A CN112376436A CN 112376436 A CN112376436 A CN 112376436A CN 202011332079 A CN202011332079 A CN 202011332079A CN 112376436 A CN112376436 A CN 112376436A
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- plate
- supporting
- bridge
- bottom plate
- groove
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention belongs to the field of bridge construction, in particular to a bridge support adjusting device for bridge construction, aiming at the problems of smaller support area, poorer support stability and inconvenient movement of the existing support device, the invention provides a scheme which comprises a first bottom plate, a second bottom plate is arranged on the left side of the first bottom plate, fixed columns are fixedly arranged on the tops of the first bottom plate and the second bottom plate, support tubes are slidably arranged on the outer sides of the two fixed columns, a first support plate and a second support plate are respectively fixedly arranged on the tops of the two support tubes, a first connecting groove is arranged on the right side of the first support plate, a first connecting plate is slidably arranged in the first connecting groove, and the right side of the first connecting plate is fixedly connected with the left side of the second support plate. And the roller can be folded, the placing stability is improved, the structure is simple, and the use is convenient.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a bridge supporting and adjusting device for bridge construction.
Background
Constructing a bridge according to the design content; the construction method mainly refers to the contents of bridge construction technology, construction organization, construction management, construction quality and the like, and the supporting device can be used during bridge construction.
The supporting area of the existing supporting device is small, the supporting stability is poor, and the supporting device is inconvenient to move, so that the bridge supporting and adjusting device for bridge construction is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects that a supporting device in the prior art is small in supporting area, poor in supporting stability and inconvenient to move, and provides a bridge supporting and adjusting device for bridge construction.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bridge supporting and adjusting device for bridge construction comprises a first base plate, a second base plate is installed on the left side of the first base plate, fixing columns are fixedly installed on the tops of the first base plate and the second base plate, supporting tubes are slidably installed on the outer sides of the two fixing columns, a first supporting plate and a second supporting plate are respectively fixedly installed on the tops of the two supporting tubes, a first connecting groove is formed in the right side of the first supporting plate, a first connecting plate is slidably installed in the first connecting groove, the right side of the first connecting plate is fixedly connected with the left side of the second supporting plate, a lifting plate is fixedly installed on the outer side of one of the two supporting tubes, a rectangular groove is formed in the left side of the lifting plate, a transverse plate is slidably installed in the rectangular groove, one side of the transverse plate is fixedly connected with the outer side of the other one of the two supporting tubes, and a motor is, fixed mounting has the screw rod on the output shaft of motor, screw rod and lifter plate threaded connection, the bottom of second backup pad is rotated and is installed rectangular pole and transfer line, the rectangle has been seted up at the top of screw rod and has been erect the groove, and four sides of rectangular pole erect four walls sliding connection in groove with the rectangle, the fixed cover in the outside of rectangular pole is equipped with first gear, and the fixed cover in the outside of transfer line is equipped with the second gear, and first gear meshes with the second gear mutually, fixed mounting has first bearing in the rectangular groove, and the inner circle fixed mounting of first bearing has the lead screw, lead screw and transverse plate threaded connection, the right-hand member fixed mounting of lead screw has second conical gear, and the meshing has first conical gear on the second conical gear, and first conical gear fixed mounting is in the bottom of transfer line.
Preferably, equal slidable mounting has the locking piece on two stay tubes, has all seted up the locking groove on two fixed columns, and the equal fixed mounting in one end of two locking pieces has the reset block.
Preferably, the outside of two locking pieces all is equipped with the spring, the one end and the reset block fixed connection of spring, the other end of spring and the outside fixed connection of stay tube.
Preferably, the right side of first bottom plate and the equal fixed mounting in left side of second bottom plate have fixed frame, and equal slidable mounting has the loading board in two fixed frames, and the bottom of two loading boards all rotates and installs two gyro wheels, and the equal fixed mounting in top of two loading boards has the pulling plate, and two pulling plates respectively with two stay tube fixed connection.
Preferably, a second connecting plate is fixedly mounted on the left side of the first bottom plate, a second connecting groove is formed in the right side of the second bottom plate, and the outer side of the second connecting plate is connected with the inner wall of the second connecting groove in a sliding mode.
Preferably, the top of the first bottom plate and the top of the second bottom plate are both fixedly provided with two cylinders, and output shafts of the four cylinders are both fixedly provided with adjusting blocks.
Preferably, a first sliding groove is formed in the left side of the first bottom plate, a second sliding groove is formed in the right side of the second bottom plate, a first sliding plate is arranged in the first sliding groove in a sliding mode, a second sliding plate is arranged in the second sliding groove in a sliding mode, a moving plate is fixedly arranged on the right side of the second sliding plate, a moving groove is formed in the left side of the first sliding plate, the outer side of the moving plate is connected with the inner wall of the moving groove in a sliding mode, an electric push rod is fixedly arranged at the top of the first bottom plate, and an output shaft of the electric push rod is.
Preferably, the equal fixed mounting in top of first slide and second slide has the riser, all rotates the one end of installing the catch bar on two risers, and the other end of two catch bars all rotates and installs the ejector plate.
Preferably, the two pushing plates are fixedly provided with pushing blocks, and one ends of the two pushing blocks extend into the two locking grooves respectively.
Preferably, two second bearings are fixedly mounted at the bottom of the second support plate, and the outer sides of the rectangular rod and the transmission rod are fixedly connected with inner rings of the two second bearings respectively.
Compared with the prior art, the invention has the beneficial effects that:
when the scheme is used, the self-supporting device is moved to a supporting position through the arrangement of the idler wheels, then the motor is started through the switch, the motor drives the screw rod to rotate, so that the lifting plate moves upwards, the lifting plate drives the supporting tube on the right side to move upwards, the lifting plate simultaneously drives the transverse plate to move upwards, the transverse plate drives the supporting tube on the left side to move upwards, and the two supporting tubes drive the first supporting plate and the second supporting plate to move upwards for supporting;
according to the scheme, the rectangular rod is driven to rotate by the screw rod, the rectangular rod drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the transmission rod to rotate, the transmission rod drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the screw rod to rotate, the transverse plate moves leftwards, the transverse plate drives the supporting tube to move leftwards, the first supporting plate and the second bottom plate move leftwards, the supporting area is enlarged, meanwhile, the two locking blocks are aligned with the two locking grooves, the two springs reset, the two locking blocks are clamped into the two locking grooves, the two supporting tubes are fixed, and the use stability is improved;
according to the scheme, the two support pipes drive the two pull plates to move upwards, the two pull plates drive the two bearing plates to move upwards, and the two bearing plates drive the four rollers to move upwards, so that the bottoms of the first bottom plate and the second bottom plate are in contact with the ground, and the use stability is improved;
according to the scheme, when the ground is uneven, the adjusting block is pushed to move through the air cylinder, so that the first bottom plate and the second bottom plate are kept horizontal;
when the fixing of the supporting tube needs to be released, the first sliding plate is pushed to move downwards through the electric push rod, the first sliding plate drives the second sliding plate to move downwards through the movable plate, the first sliding plate and the second sliding plate drive the two vertical plates to move downwards, the two vertical plates drive the two push rods to move, the two push rods drive the two push plates to approach each other, the two push plates drive the two push blocks to move, and the two push blocks drive the two locking blocks to separate from the two locking grooves;
the invention can increase the supporting area, is more stable to use, can fix the two supporting tubes, can retract the roller, increases the placing stability, and has simple structure and convenient use.
Drawings
Fig. 1 is a schematic structural diagram of a bridge support adjusting device for bridge construction according to the present invention;
FIG. 2 is a schematic structural view of part A of a bridge support adjusting device for bridge construction according to the present invention;
fig. 3 is a schematic structural diagram of a part B of a bridge support adjusting device for bridge construction according to the present invention;
fig. 4 is a schematic structural diagram of a portion C of a bridge support adjusting device for bridge construction according to the present invention;
fig. 5 is a schematic structural diagram of a portion D of a bridge support adjusting device for bridge construction according to the present invention.
In the figure: 1 a first bottom plate, 2 a second bottom plate, 3 a fixed column, 4 a supporting tube, 5 a first supporting plate, 6 a second supporting plate, 7 a first connecting groove, 8 a first connecting plate, 9 a lifting plate, 10 a rectangular groove, 11 a transverse plate, 12 a motor, 13 a screw rod, 14 a rectangular vertical groove, 15 a rectangular rod, 16 a transmission rod, 17 a first gear, 18 a second gear, 19 a first bevel gear, 20 a second bevel gear, 21 a first bearing, 22 a screw rod, 23 a fixed frame, 24 a bearing plate, 25 rollers, 26 a pulling plate, 27 a locking block, 28 a reset block, 29 a spring, 30 a locking groove, 31 a pushing block, 32 a pushing plate, 33 a pushing rod, 34 a vertical plate, 35 a second sliding plate, 36 a first sliding plate, 37 an electric push rod, 38, 39 a first sliding groove, 40 a second sliding groove, 41 air cylinders and 42 an adjusting block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a bridge supporting and adjusting device for bridge construction comprises a first bottom plate 1, a second bottom plate 2 is installed on the left side of the first bottom plate 1, fixing columns 3 are fixedly installed on the tops of the first bottom plate 1 and the second bottom plate 2, supporting tubes 4 are slidably installed on the outer sides of the two fixing columns 3, a first supporting plate 5 and a second supporting plate 6 are fixedly installed on the tops of the two supporting tubes 4 respectively, a first connecting groove 7 is formed in the right side of the first supporting plate 5, a first connecting plate 8 is slidably installed in the first connecting groove 7, the right side of the first connecting plate 8 is fixedly connected with the left side of the second supporting plate 6, a lifting plate 9 is fixedly installed on the outer side of one supporting tube 4 of the two supporting tubes 4, a rectangular groove 10 is formed in the left side of the lifting plate 9, a transverse plate 11 is slidably installed in the rectangular groove 10, one side of the transverse plate 11 is fixedly connected with, the top of the first bottom plate 1 is fixedly provided with a motor 12, an output shaft of the motor 12 is fixedly provided with a screw 13, the screw 13 is in threaded connection with the lifting plate 9, the bottom of the second supporting plate 6 is rotatably provided with a rectangular rod 15 and a transmission rod 16, the top of the screw 13 is provided with a rectangular vertical groove 14, four sides of the rectangular rod 15 are in sliding connection with four walls of the rectangular vertical groove 14, the outer side of the rectangular rod 15 is fixedly sleeved with a first gear 17, the outer side of the transmission rod 16 is fixedly sleeved with a second gear 18, the first gear 17 is meshed with the second gear 18, a first bearing 21 is fixedly arranged in the rectangular groove 10, an inner ring of the first bearing 21 is fixedly provided with a screw 22, the screw 22 is in threaded connection with the transverse plate 11, the right end of the screw 22 is fixedly provided with a second bevel gear 20, a first bevel gear 19 is meshed on the second bevel gear 20, and the first.
In the invention, the two support tubes 4 are both provided with the locking blocks 27 in a sliding manner, the two fixing columns 3 are both provided with the locking grooves 30, and one ends of the two locking blocks 27 are both fixedly provided with the reset blocks 28.
In the invention, springs 29 are sleeved on the outer sides of the two locking blocks 27, one ends of the springs 29 are fixedly connected with the reset block 28, the other ends of the springs 29 are fixedly connected with the outer side of the support tube 4, and the springs 29 reset the reset block 28.
In the invention, fixed frames 23 are fixedly arranged on the right side of the first bottom plate 1 and the left side of the second bottom plate 2, bearing plates 24 are slidably arranged in the two fixed frames 23, two rollers 25 are rotatably arranged at the bottoms of the two bearing plates 24, pulling plates 26 are fixedly arranged at the tops of the two bearing plates 24, and the two pulling plates 26 are respectively and fixedly connected with the two supporting tubes 4.
In the invention, a second connecting plate is fixedly arranged on the left side of a first bottom plate 1, a second connecting groove is formed in the right side of a second bottom plate 2, and the outer side of the second connecting plate is connected with the inner wall of the second connecting groove in a sliding manner.
In the invention, two air cylinders 41 are fixedly mounted at the tops of the first base plate 1 and the second base plate 2, adjusting blocks 42 are fixedly mounted on output shafts of the four air cylinders 41, and the air cylinders 41 are used for driving the adjusting blocks 42 to move.
In the invention, a first sliding groove 39 is formed in the left side of a first bottom plate 1, a second sliding groove 40 is formed in the right side of a second bottom plate 2, a first sliding plate 36 is slidably mounted in the first sliding groove 39, a second sliding plate 35 is slidably mounted in the second sliding groove 40, a moving plate 38 is fixedly mounted on the right side of the second sliding plate 35, a moving groove is formed in the left side of the first sliding plate 36, the outer side of the moving plate 38 is slidably connected with the inner wall of the moving groove, an electric push rod 37 is fixedly mounted at the top of the first bottom plate 1, an output shaft of the electric push rod 37 is fixedly connected with the top of the first sliding plate 36, and the electric push rod 37.
In the invention, vertical plates 34 are fixedly arranged at the tops of the first sliding plate 36 and the second sliding plate 35, one ends of pushing rods 33 are rotatably arranged on the two vertical plates 34, and the other ends of the two pushing rods 33 are rotatably arranged with pushing plates 32.
In the invention, the two pushing plates 32 are fixedly provided with the pushing blocks 31, one ends of the two pushing blocks 31 respectively extend into the two locking grooves 30, and the pushing blocks 31 can drive the locking blocks 27 to move.
In the invention, two second bearings are fixedly arranged at the bottom of the second support plate 6, the outer sides of the rectangular rod 15 and the transmission rod 16 are respectively and fixedly connected with the inner rings of the two second bearings, and the two second bearings enable the rectangular rod 15 and the transmission rod 16 to stably rotate.
When the lifting device is used, the lifting device moves to a supporting position through the arrangement of the roller 25, then the motor 12 is started through a switch, the motor 12 drives the screw rod 13 to rotate, so that the lifting plate 9 moves upwards, the lifting plate 9 drives the supporting tube 4 on the right side to move upwards, the lifting plate 9 simultaneously drives the transverse plate 11 to move upwards, the transverse plate 11 drives the supporting tube 4 on the left side to move upwards, and the two supporting tubes 4 drive the first supporting plate 5 and the second supporting plate 6 to move upwards for supporting; the screw 13 drives the rectangular rod 15 to rotate, the rectangular rod 15 drives the first gear 17 to rotate, the first gear 17 drives the second gear 18 to rotate, the second gear 18 drives the transmission rod 16 to rotate, the transmission rod 16 drives the first bevel gear 19 to rotate, the first bevel gear 19 drives the second bevel gear 20 to rotate, the second bevel gear 20 drives the screw rod 22 to rotate, the transverse plate 11 moves leftwards, the transverse plate 11 drives the supporting tube 4 to move leftwards, the first supporting plate 5 and the second bottom plate 2 move leftwards, the supporting area is enlarged, meanwhile, the two locking blocks 27 are aligned with the two locking grooves 30, the two springs 29 are reset, the two locking blocks 27 are clamped into the two locking grooves 30, the two supporting tubes 4 are fixed, and the use stability is improved; the two support pipes 4 drive the two pulling plates 26 to move upwards, the two pulling plates 26 drive the two bearing plates 24 to move upwards, and the two bearing plates 24 drive the four rollers 25 to move upwards, so that the bottoms of the first base plate 1 and the second base plate 2 are in contact with the ground, and the use stability is improved; when the ground is uneven, the air cylinder 41 pushes the adjusting block 42 to move, so that the first bottom plate 1 and the second bottom plate 2 are kept horizontal; when the support tube 4 needs to be released from the fixing process, the first sliding plate 36 is pushed by the electric push rod 37 to move downwards, the first sliding plate 36 drives the second sliding plate 35 to move downwards through the moving plate 38, the first sliding plate 36 and the second sliding plate 35 drive the two vertical plates 34 to move downwards, the two vertical plates 34 drive the two push rods 33 to move, the two push rods 33 drive the two push plates 32 to approach each other, the two push plates 32 drive the two push blocks 31 to move, and the two push blocks 31 drive the two locking blocks 27 to separate from the two locking grooves 30.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A bridge supporting and adjusting device for bridge construction comprises a first bottom plate (1) and is characterized in that a second bottom plate (2) is installed on the left side of the first bottom plate (1), fixing columns (3) are fixedly installed at the tops of the first bottom plate (1) and the second bottom plate (2), supporting tubes (4) are slidably installed on the outer sides of the two fixing columns (3), a first supporting plate (5) and a second supporting plate (6) are fixedly installed at the tops of the two supporting tubes (4), a first connecting groove (7) is formed in the right side of the first supporting plate (5), a first connecting plate (8) is slidably installed in the first connecting groove (7), the right side of the first connecting plate (8) is fixedly connected with the left side of the second supporting plate (6), a lifting plate (9) is fixedly installed on the outer side of one supporting tube (4) of the two supporting tubes (4), a rectangular groove (10) is formed in the left side of the lifting plate (9), the improved structure of the solar water heater is characterized in that a transverse plate (11) is arranged in the rectangular groove (10) in a sliding mode, one side of the transverse plate (11) is fixedly connected with the outer side of the other supporting pipe (4) in the two supporting pipes (4), a motor (12) is fixedly arranged at the top of the first base plate (1), a screw rod (13) is fixedly arranged on an output shaft of the motor (12), the screw rod (13) is in threaded connection with the lifting plate (9), a rectangular rod (15) and a transmission rod (16) are rotatably arranged at the bottom of the second supporting plate (6), a rectangular vertical groove (14) is formed in the top of the screw rod (13), four sides of the rectangular rod (15) are in sliding connection with four walls of the rectangular vertical groove (14), a first gear (17) is fixedly sleeved on the outer side of the rectangular rod (15), a second gear (18) is fixedly sleeved on the outer side of the transmission rod (16), and the, fixed mounting has first bearing (21) in rectangular channel (10), and the inner circle fixed mounting of first bearing (21) has lead screw (22), lead screw (22) and horizontal board (11) threaded connection, the right-hand member fixed mounting of lead screw (22) has second conical gear (20), and the meshing has first conical gear (19) on second conical gear (20), and first conical gear (19) fixed mounting is in the bottom of transfer line (16).
2. The bridge supporting and adjusting device for bridge construction according to claim 1, wherein the two supporting tubes (4) are slidably provided with locking blocks (27), the two fixing columns (3) are respectively provided with a locking groove (30), and one ends of the two locking blocks (27) are respectively fixedly provided with a resetting block (28).
3. The bridge supporting and adjusting device for bridge construction as claimed in claim 2, wherein springs (29) are sleeved on the outer sides of the two locking blocks (27), one ends of the springs (29) are fixedly connected with the reset block (28), and the other ends of the springs (29) are fixedly connected with the outer side of the supporting tube (4).
4. The bridge supporting and adjusting device for bridge construction according to claim 1, wherein fixed frames (23) are fixedly installed on the right side of the first bottom plate (1) and the left side of the second bottom plate (2), bearing plates (24) are slidably installed in the two fixed frames (23), two rollers (25) are rotatably installed on the bottoms of the two bearing plates (24), pulling plates (26) are fixedly installed on the tops of the two bearing plates (24), and the pulling plates (26) are fixedly connected with the supporting tubes (4).
5. The bridge supporting and adjusting device for bridge construction as claimed in claim 1, wherein a second connecting plate is fixedly mounted on the left side of the first bottom plate (1), a second connecting groove is formed in the right side of the second bottom plate (2), and the outer side of the second connecting plate is slidably connected with the inner wall of the second connecting groove.
6. The bridge supporting and adjusting device for bridge construction according to claim 1, wherein two air cylinders (41) are fixedly mounted on the top of the first bottom plate (1) and the top of the second bottom plate (2), and adjusting blocks (42) are fixedly mounted on output shafts of the four air cylinders (41).
7. The bridge supporting and adjusting device for bridge construction according to claim 1, wherein a first sliding groove (39) is formed in the left side of the first bottom plate (1), a second sliding groove (40) is formed in the right side of the second bottom plate (2), a first sliding plate (36) is slidably mounted in the first sliding groove (39), a second sliding plate (35) is slidably mounted in the second sliding groove (40), a moving plate (38) is fixedly mounted on the right side of the second sliding plate (35), a moving groove is formed in the left side of the first sliding plate (36), the outer side of the moving plate (38) is slidably connected with the inner wall of the moving groove, an electric push rod (37) is fixedly mounted at the top of the first bottom plate (1), and an output shaft of the electric push rod (37) is fixedly connected with the top of the first sliding plate (36).
8. The bridge supporting and adjusting device for bridge construction as claimed in claim 7, wherein the first sliding plate (36) and the second sliding plate (35) are fixedly provided with vertical plates (34) at the top, one ends of the pushing rods (33) are rotatably arranged on the two vertical plates (34), and the other ends of the pushing rods (33) are rotatably arranged with push plates (32).
9. The bridge supporting and adjusting device for bridge construction according to claim 8, wherein the two push-out plates (32) are fixedly provided with push-out blocks (31), and one ends of the push-out blocks (31) extend into the locking grooves (30).
10. The bridge support adjusting device for bridge construction according to claim 1, wherein two second bearings are fixedly installed at the bottom of the second support plate (6), and the outer sides of the rectangular rod (15) and the transmission rod (16) are fixedly connected with the inner rings of the two second bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011332079.XA CN112376436A (en) | 2020-11-24 | 2020-11-24 | Bridge supports adjusting device for bridge construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011332079.XA CN112376436A (en) | 2020-11-24 | 2020-11-24 | Bridge supports adjusting device for bridge construction |
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| CN112376436A true CN112376436A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011332079.XA Withdrawn CN112376436A (en) | 2020-11-24 | 2020-11-24 | Bridge supports adjusting device for bridge construction |
Country Status (1)
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| CN (1) | CN112376436A (en) |
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| CN113152303A (en) * | 2021-05-13 | 2021-07-23 | 河南隆飞路桥工程有限公司 | Bridge construction supporting equipment in field of bridge engineering |
| CN113652970A (en) * | 2021-08-16 | 2021-11-16 | 北京市市政一建设工程有限责任公司 | Bridge construction process in mountain area |
| CN114212113A (en) * | 2022-01-17 | 2022-03-22 | 德铁轨道交通技术（上海）有限公司 | Steel rail surface crack detection trolley based on eddy current principle |
| CN114737488A (en) * | 2022-03-29 | 2022-07-12 | 中铁六局集团有限公司 | Frame bridge displacement adjusting equipment and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113152303A (en) * | 2021-05-13 | 2021-07-23 | 河南隆飞路桥工程有限公司 | Bridge construction supporting equipment in field of bridge engineering |
| CN113652970A (en) * | 2021-08-16 | 2021-11-16 | 北京市市政一建设工程有限责任公司 | Bridge construction process in mountain area |
| CN114212113A (en) * | 2022-01-17 | 2022-03-22 | 德铁轨道交通技术（上海）有限公司 | Steel rail surface crack detection trolley based on eddy current principle |
| CN114737488A (en) * | 2022-03-29 | 2022-07-12 | 中铁六局集团有限公司 | Frame bridge displacement adjusting equipment and using method thereof |
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