CN213328706U - Gallows is used in bridge construction - Google Patents
Gallows is used in bridge construction Download PDFInfo
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- CN213328706U CN213328706U CN202022065706.XU CN202022065706U CN213328706U CN 213328706 U CN213328706 U CN 213328706U CN 202022065706 U CN202022065706 U CN 202022065706U CN 213328706 U CN213328706 U CN 213328706U
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Abstract
The application relates to a hanging bracket for bridge construction, which belongs to the field of bridge construction equipment and comprises a working hanging basket and a top plate, wherein the working hanging basket is movably arranged on the top plate, and a lifting assembly and a first driving assembly are arranged on the top plate; the lifting assembly comprises a lifting motor, a winding roller and a steel cable. When carrying out bridge construction, start elevator motor, elevator motor drives the winding roller and rotates, twine the steel cable on the winding roller, along with the motion of steel cable, the hanging flower basket is hoisted, treat after the height of hanging flower basket rises suitable construction height, staff on the hanging flower basket can begin the construction, accomplish after the construction, start first drive assembly and drive the length direction motion of work hanging flower basket along the bridge, move and construct to next place of construction, need not to carry out repeated dismouting to the work gallows, the operating time has been practiced thrift greatly, the improvement that is showing work efficiency.
Description
Technical Field
The application relates to bridge construction equipment field especially relates to a gallows for bridge construction.
Background
In the bridge construction process, need consolidate or whitewash construction such as bridge itself, the staff at this in-process, it is narrow and small to have dealt with the face that the pontic can depend on, will prevent again to fall, has brought a great deal of inconvenience for constructor, in order to play guarantee to a certain extent to constructor's life safety, the use of gallows for the bridge construction is more and more wide.
Chinese patent with publication number CN208136718U discloses a hanger for bridge construction, which comprises a top plate and a working basket, wherein a hydraulic cylinder is arranged on the top plate, so that the tail end of a telescopic rod of the hydraulic cylinder is fixed on the working basket; the hydraulic cylinder drives the working hanging basket and the workers to ascend and descend, and further the construction on the bridge is completed.
However, the applicant believes that, because the length of the working hanging basket is limited, when one part of the bridge is finished with painting or reinforcing work and the next part needs to be constructed, the hanging bracket needs to be lifted first and then moved to the next construction site, the whole process is very complicated, and the bridge construction efficiency is greatly influenced.
SUMMERY OF THE UTILITY MODEL
In order to improve the efficiency of construction of bridge, this application provides a gallows for bridge construction.
The application provides a pair of gallows for bridge construction adopts following technical scheme:
a hanging bracket for bridge construction comprises a working hanging basket and a top plate, wherein the working hanging basket is movably arranged on the top plate, and a lifting assembly for driving the working hanging basket to move in the vertical direction and a first driving assembly for driving the working hanging basket to move along the length direction of a bridge are arranged on the top plate; the lifting assembly comprises a lifting motor, a winding roller and a steel cable, the lifting motor is fixedly arranged on the top plate, the winding roller is rotatably arranged on the top plate, the steel cable is wound on the winding roller, one end of the steel cable is fixedly connected with the winding roller, the other end of the steel cable is fixedly connected with the hanging basket, and the winding roller is in transmission connection with an output shaft of the lifting motor.
Through adopting above-mentioned technical scheme, when carrying out bridge construction, start elevator motor, elevator motor drives the winding roller and rotates, twine the steel cable on the winding roller, along with the motion of steel cable, the hanging flower basket is hoisted, treat that the height of hanging flower basket rises after suitable construction height, staff on the hanging flower basket can begin the construction, accomplish after one is under construction, start first drive assembly and drive the length direction motion of work hanging flower basket along the bridge, the motion is under construction to next construction site, need not to carry out repeated dismouting to the work gallows, the operating time has been practiced thrift greatly, the improvement that is showing.
Optionally, the first driving assembly comprises a driving motor and a driving wheel, the driving wheel is rotatably arranged on the top plate and is in rolling contact with the bridge deck, the driving motor is fixedly arranged on the top plate, and an output shaft of the driving motor is in transmission connection with the driving wheel.
Through adopting above-mentioned technical scheme, start driving motor, driving motor drives the drive wheel and rotates, and the rotation of drive wheel drives the roof motion, and along with the motion of roof, drives the hanging flower basket motion through the steel cable, can adjust the position of hanging flower basket on the length direction of bridge, need not to carry out the dismantlement repeatedly to the hanging flower basket, and then reach the purpose that improves work efficiency.
Optionally, the work hanging flower basket includes first hanging flower basket and second hanging flower basket, first hanging flower basket includes first bottom plate and the fixed guardrail that sets up on first bottom plate, the second hanging flower basket includes second bottom plate and the fixed guardrail that sets up on the second bottom plate, first bottom plate is provided with the inserted block on being close to the lateral wall of second bottom plate fixedly, offer on the second bottom plate and supply inserted block male slot, be provided with the locating part that is used for injecing the inserted block at the slot internal position on the second bottom plate, be provided with the second drive assembly who is used for driving the direction motion that first hanging flower basket and second hanging flower basket orientation are close to each other or are kept away from on the roof.
By adopting the technical scheme, when the hanging basket moves along the length direction of the bridge under the driving of the first driving component, when the position of the insert block is blocked by the pier, the limiting piece is released, then the second driving component is started, the second driving component drives the first hanging basket and the second hanging basket to move towards the direction away from each other, after the gap between the first hanging basket and the second hanging basket is larger than the width of the pier, the hanging basket moves through the pier under the drive of the first drive component, then the first hanging basket and the second hanging basket move towards the direction of mutual approaching under the drive of the second drive component, the insertion block is inserted into the slot, the position of inserting the piece is injectd through the locating part, realizes the injecture of position between first hanging flower basket and the second hanging flower basket then, need not to carry out the dismouting to the hanging flower basket and can pass through the pier, has further improved the efficiency of construction in the bridge construction.
Optionally, the second driving assembly includes a sliding plate and a connecting rod, the connecting rod is slidably disposed on the top plate along a direction perpendicular to the length of the bridge, the sliding plate is fixedly disposed at one end of the connecting rod away from the top plate, the lifting motor and the winding roller are both fixedly disposed on the sliding plate, and the top plate is provided with a driving source for driving the sliding plate to move towards a direction away from or close to the top plate.
Through adopting above-mentioned technical scheme, start the driving source, the driving source drives the sliding plate and moves towards the direction of keeping away from the roof, and the motion of sliding plate drives the connecting rod and moves towards the direction of keeping away from the roof, and the connecting rod plays guiding action to a certain extent to the motion of sliding plate, can make the motion of first hanging flower basket and second hanging flower basket more steady, and then guarantees staff's safety on the hanging flower basket.
Optionally, the limiting part is set as a limiting pin, a connecting hole penetrating through the slot is formed in the second bottom plate, the limiting pin penetrates through the connecting hole in a sliding mode and is connected with the inserting block in an inserting mode, and an elastic part used for driving the limiting pin to move towards the inside of the slot is arranged on the second bottom plate.
Through adopting above-mentioned technical scheme, the spacing pin is pulled to the direction of keeping away from the slot towards, and the spacing pin breaks away from the contact with the inserted block, can remove the injecing of spacing pin to the inserted block position, and when spacing pin and inserted block plug-in connection, the spacing pin moves towards the slot internal motion all the time under the drive of elastic component, can avoid to a certain extent because mechanical vibration or artificial mistake touch lead to spacing pin and inserted block break away from the contact, has improved the reliability of device effectively.
Optionally, one end of the limit pin, which is far away from the slot, is fixedly provided with a pull ring for pulling the limit pin, and the second bottom plate is provided with a baffle for plugging the connecting hole.
Through adopting above-mentioned technical scheme, open the baffle, can drive the spacer pin through the pulling pull ring and move towards the direction of keeping away from the slot, made things convenient for bridge constructor pulling spacer pin motion, improved the efficiency of work.
Optionally, the first hanging basket and the second hanging basket are respectively provided with an anti-falling component for preventing constructors from falling off; the anticreep subassembly includes pivot and anticreep board, the pivot is rotated along vertical direction and is set up at the guardrail, anticreep board and pivot fixed connection, be provided with the mounting that is used for fixed anticreep board position on the guardrail.
Through adopting above-mentioned technical scheme, before removing the spacer pin and being connected of inserted block, rotate the anticreep board, keep away from the one end of pivot to the anticreep board through the mounting and carry out the fixed of position, the one end and the guardrail fixed connection of anticreep board, the other end and pivot fixed connection to carry out the shutoff with the breach that first hanging flower basket and second hanging flower basket produced because break away from each other, can prevent effectively that bridge constructor from dropping from the hanging flower basket, improved the reliable performance that the device used.
Optionally, the fixing part is set as a fixing pin, a mounting hole penetrating through the anti-falling plate is formed in the anti-falling plate, and the fixing pin penetrates through the mounting hole and is connected with the guardrail in an inserting mode.
Through adopting above-mentioned technical scheme, fix the position of anticreep board through the fixed pin, easy operation is reliable, and the fixed pin is inserted and is got the convenience, and the reliability can be high, has improved the practicality of device effectively.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the first driving assembly drives the working hanging basket to move along the length direction of the bridge and move to the next construction site for construction, and repeated disassembly and assembly of the working hanging bracket are not needed;
2. the hanging basket can be opened and divided into a first hanging basket and a second hanging basket, can freely pass through a pier, and is not required to be repeatedly disassembled and assembled, so that the construction efficiency of bridge construction is improved;
3. the gap that produces because break away from each other first hanging flower basket and second hanging flower basket through the anticreep board carries out the shutoff, can prevent effectively that bridge constructor from dropping from the hanging flower basket, has improved the reliable performance that the device used.
Drawings
FIG. 1 is a schematic structural view of the present application in its entirety;
FIG. 2 is a partial cross-sectional view of the top plate of the present application;
figure 3 is an exploded schematic view of the working basket of the present application;
FIG. 4 is an enlarged view of portion A of FIG. 3;
fig. 5 is a schematic structural view of the anti-drop assembly of the present application.
Description of reference numerals: 1. a working hanging basket; 11. a first basket; 12. a second basket; 13. a first base plate; 14. a second base plate; 15. a guardrail; 16. inserting a block; 17. a slot; 2. a top plate; 3. a lifting assembly; 31. a lifting motor; 32. a winding roller; 33. a wire rope; 4. a first drive assembly; 41. a drive motor; 42. a drive wheel; 43. a drive shaft; 5. a limiting member; 51. connecting holes; 52. an elastic member; 6. a second drive assembly; 61. a sliding plate; 62. a connecting rod; 63. a drive source; 64. a slide bar; 65. fixing the rod; 7. a pull ring; 71. a baffle plate; 8. an anti-drop component; 81. a rotating shaft; 82. an anti-drop plate; 9. a fixing member; 91. and (7) installing holes.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses gallows is used in bridge construction.
Referring to fig. 1, the hanging bracket for bridge construction comprises a working hanging basket 1 and a top plate 2, wherein the working hanging basket 1 is movably arranged on the top plate 2.
Referring to fig. 1, a lifting assembly 3 for driving the work basket 1 to move in a vertical direction is provided on the top plate 2, and the lifting assembly 3 includes a lifting motor 31, a winding roller 32, and a wire rope 33. The lifting motor 31 is fixedly arranged on the top plate 2, the winding roller 32 is rotatably arranged on the top plate 2, the steel cable 33 is wound on the winding roller 32, one end of the steel cable 33 is fixedly connected with the winding roller 32, the other end of the steel cable is fixedly connected with the hanging basket, and the winding roller 32 is coaxially and fixedly connected with an output shaft of the lifting motor 31.
Referring to fig. 1 and 2, the top plate 2 is provided with a first driving assembly 4 for driving the working basket 1 to move along the length direction of the bridge, the first driving assembly 4 comprises a driving motor 41 and two driving wheels 42, a driving shaft 43 is rotatably arranged on the bottom wall of the top plate 2 along the direction perpendicular to the length direction of the bridge, the two driving shafts 43 are arranged, the driving wheels 42 are sleeved on the driving shafts 43, the driving wheels 42 are rotatably arranged on the top plate 2 and are in rolling contact with the bridge floor, the driving motor 41 is fixedly arranged on the top plate 2, and an output shaft of the driving motor 41 is in transmission connection with the driving wheels 42.
Starting driving motor 41, driving motor 41 drives drive wheel 42 and rotates, and the rotation of drive wheel 42 drives roof 2 motion, along with the motion of roof 2, drives the hanging flower basket motion through steel cable 33, can adjust the position of hanging flower basket on the length direction of bridge, need not to carry out repeated demolition to the hanging flower basket, and then reaches the purpose that improves work efficiency.
Referring to fig. 1 and 3, the work basket 1 includes a first basket 11 and a second basket 12, the first basket 11 includes a first bottom plate 13 and a guard rail 15 fixedly disposed on the first bottom plate 13, the second basket 12 includes a second bottom plate 14 and a guard rail 15 fixedly disposed on the second bottom plate 14, an insertion block 16 is fixedly disposed on a side wall of the first bottom plate 13 close to the second bottom plate 14, and an insertion slot 17 for the insertion block 16 to be inserted is disposed on the second bottom plate 14.
Referring to fig. 3 and 4, the second bottom plate 14 is provided with a limiting member 5 for limiting the position of the insert block 16 in the slot 17, the limiting member 5 is provided as a limiting pin, the second bottom plate 14 is provided with a connecting hole 51 penetrating through the slot 17, the limiting pin slidably penetrates through the connecting hole 51 and is in plug-in connection with the insert block 16, the second bottom plate 14 is provided with an elastic member 52 for driving the limiting pin to move towards the slot 17, the elastic member 52 is provided as a tension spring, one end of the tension spring is fixedly connected with the limiting pin, and the other end of the tension spring is fixedly connected with the second bottom plate 14.
When the hanging flower basket moves along the length direction of bridge under the drive of first drive assembly 4, when meetting the block of pier, drive the spacer pin and move towards the direction of keeping away from connecting hole 51, drive inserted block 16 then and break away from slot 17, make first hanging flower basket 11 and second hanging flower basket 12 separate, when spending the pier, need not to carry out the dismouting to the hanging flower basket and can pass through the pier, further improved the efficiency of construction in the bridge construction.
Referring to fig. 2 and 3, a second driving assembly 6 for driving the first basket 11 and the second basket 12 to move toward or away from each other is disposed on the top plate 2, the second driving assembly 6 includes a sliding plate 61 and a connecting rod 62, the connecting rod 62 is slidably disposed on the top plate 2 along a direction perpendicular to the length of the bridge, the sliding plate 61 is fixedly disposed at one end of the connecting rod 62 away from the top plate 2, and the lifting motor 31 and the winding roller 32 are both fixedly disposed on the sliding plate 61.
Referring to fig. 2, a driving source 63 for driving the sliding plate 61 to move away from or close to the top plate 2 is disposed on the top plate 2, the driving source 63 is provided as an air cylinder, the air cylinder is fixedly disposed on the top plate 2, and a piston rod of the air cylinder is fixedly connected with the sliding plate 61.
Referring to fig. 1 and 3, a fixing rod 65 is fixedly arranged on the sliding plate 61 along the vertical direction, a sliding rod 64 is fixedly arranged on the guardrail 15 along the vertical direction, and the sliding rod 64 is slidably arranged in the fixing rod 65 along the length direction of the fixing rod 65.
After the spacer pin breaks away from the inserted block 16, the cylinder is started, the cylinder drives the sliding plate 61 to move towards the direction far away from the top plate 2, the sliding plate 61 drives the first hanging basket 11 and the second hanging basket 12 to move towards the direction far away from each other through the fixed rod 65 and the sliding rod 64, the connecting rod 62 plays a certain guiding role in the movement of the sliding plate 61, the movement of the first hanging basket 11 and the second hanging basket 12 can be more stable, and the safety of workers on the hanging baskets can be further ensured.
Referring to fig. 3 and 4, a pull ring 7 for pulling the limit pin is fixedly arranged at one end of the limit pin away from the slot 17, and a baffle 71 for blocking the connecting hole 51 is arranged on the second bottom plate 14.
The baffle 71 is opened, the limiting pin can be driven to move towards the direction far away from the slot 17 by pulling the pull ring 7, the bridge constructor can conveniently pull the limiting pin to move, and the working efficiency is improved.
Referring to fig. 5, each of the first basket 11 and the second basket 12 is provided with an anti-drop assembly 8 for preventing a worker from dropping, and the anti-drop assembly 8 includes a rotating shaft 81 and an anti-drop plate 82. The rotating shaft 81 is rotatably disposed on the guard rail 15 along the vertical direction, and the anti-dropping plate 82 is fixedly connected with the rotating shaft 81.
Before the connection between the limiting pin and the inserting block 16 is released, the anti-falling plate 82 is rotated, one end of the anti-falling plate 82, which is far away from the rotating shaft 81, is fixed through the fixing piece 9, one end of the anti-falling plate 82 is fixedly connected with the guardrail 15, and the other end of the anti-falling plate is fixedly connected with the rotating shaft 81, so that gaps between the first hanging basket 11 and the second hanging basket 12, which are generated due to mutual separation, are sealed, bridge construction personnel can be effectively prevented from falling off from the hanging baskets, and the use reliability of the device is improved.
Referring to fig. 5, a fixing member 9 for fixing the position of the anti-falling plate 82 is disposed on the guardrail 15, the fixing member 9 is a fixing pin, a mounting hole 91 penetrating through the anti-falling plate 82 is formed in the anti-falling plate 82, and the fixing pin penetrates through the mounting hole 91 and is connected with the guardrail 15 in an inserting manner. The position of the anti-falling plate 82 is fixed through the fixing pin, the operation is simple and reliable, the fixing pin is convenient to insert and take, the reliability is high, and the practicability of the device is effectively improved.
Referring to fig. 5, the fixing pin is sleeved with a tension spring, the tension spring is used for driving the fixing pin to move towards the guardrail 15, one end of the tension spring is fixedly connected with the fixing pin, and the other end of the tension spring is fixedly connected with the anti-falling plate 82.
The implementation principle of this application embodiment gallows for bridge construction does: when carrying out bridge construction, start elevator motor 31, elevator motor 31 drives winding roller 32 and rotates, twine steel cable 33 on winding roller 32, along with the motion of steel cable 33, the hanging flower basket is hoisted, treat that the height of hanging flower basket rises after suitable construction height, staff on the hanging flower basket can begin the construction, accomplish after the construction, start first drive assembly 4 and drive the length direction motion of work hanging flower basket 1 along the bridge, the motion is under construction to next construction site, need not to carry out repeated dismouting to the work gallows, the operating time has been practiced thrift greatly, the improvement that is showing.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a gallows for bridge construction, includes work hanging flower basket (1) and roof (2), work hanging flower basket (1) activity sets up on roof (2), its characterized in that: the top plate (2) is provided with a lifting component (3) for driving the working hanging basket (1) to move in the vertical direction and a first driving component (4) for driving the working hanging basket (1) to move along the length direction of the bridge;
lifting unit (3) include elevator motor (31), wire winding roller (32) and steel cable (33), elevator motor (31) are fixed to be set up on roof (2), wire winding roller (32) rotate to be set up on roof (2), steel cable (33) are around establishing on wire winding roller (32), the one end and wire winding roller (32) fixed connection of steel cable (33), the other end and hanging flower basket fixed connection, wire winding roller (32) are connected with the output shaft transmission of elevator motor (31).
2. The hanger for bridge construction according to claim 1, wherein: the first driving assembly (4) comprises a driving motor (41) and a driving wheel (42), the driving wheel (42) is rotatably arranged on the top plate (2) and is in rolling contact with the bridge floor, the driving motor (41) is fixedly arranged on the top plate (2), and an output shaft of the driving motor (41) is in transmission connection with the driving wheel (42).
3. The hanger for bridge construction according to claim 1, wherein: the working basket (1) comprises a first basket (11) and a second basket (12), the first hanging basket (11) comprises a first bottom plate (13) and a guardrail (15) fixedly arranged on the first bottom plate (13), the second hanging basket (12) comprises a second bottom plate (14) and a guardrail (15) fixedly arranged on the second bottom plate (14), the side wall of the first bottom plate (13) close to the second bottom plate (14) is fixedly provided with an inserting block (16), the second bottom plate (14) is provided with a slot (17) for inserting the inserting block (16), the second bottom plate (14) is provided with a limiting piece (5) used for limiting the position of the insert block (16) in the slot (17), and a second driving component (6) for driving the first hanging basket (11) and the second hanging basket (12) to move towards the directions close to or away from each other is arranged on the top plate (2).
4. The hanger for bridge construction according to claim 3, wherein: the second driving assembly (6) comprises a sliding plate (61) and a connecting rod (62), the connecting rod (62) is arranged on the top plate (2) in a sliding mode along the direction perpendicular to the length of the bridge, the sliding plate (61) is fixedly arranged at one end, far away from the top plate (2), of the connecting rod (62), the lifting motor (31) and the winding roller (32) are fixedly arranged on the sliding plate (61), and a driving source (63) used for driving the sliding plate (61) to move towards the direction far away from or close to the top plate (2) is arranged on the top plate (2).
5. The hanger for bridge construction according to claim 3, wherein: the limiting part (5) is arranged to be a limiting pin, a connecting hole (51) penetrating through the slot (17) is formed in the second bottom plate (14), the limiting pin penetrates through the connecting hole (51) in a sliding mode and is connected with the inserting block (16) in an inserting mode, and an elastic part (52) used for driving the limiting pin to move towards the slot (17) is arranged on the second bottom plate (14).
6. The hanger for bridge construction according to claim 5, wherein: one end of the limiting pin, which is far away from the slot (17), is fixedly provided with a pull ring (7) used for pulling the limiting pin, and the second bottom plate (14) is provided with a baffle (71) used for plugging the connecting hole (51).
7. The hanger for bridge construction according to claim 5, wherein: the first hanging basket (11) and the second hanging basket (12) are respectively provided with an anti-falling component (8) for preventing constructors from falling off;
anticreep subassembly (8) are including pivot (81) and anticreep board (82), pivot (81) are followed vertical direction and are rotated the setting at guardrail (15), anticreep board (82) and pivot (81) fixed connection, be provided with mounting (9) that are used for fixed anticreep board (82) position on guardrail (15).
8. The hanger for bridge construction according to claim 7, wherein: the fixing piece (9) is set as a fixing pin, a mounting hole (91) penetrating through the anti-falling plate (82) is formed in the anti-falling plate (82), and the fixing pin penetrates through the mounting hole (91) and is connected with the guardrail (15) in an inserting mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022065706.XU CN213328706U (en) | 2020-09-19 | 2020-09-19 | Gallows is used in bridge construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022065706.XU CN213328706U (en) | 2020-09-19 | 2020-09-19 | Gallows is used in bridge construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213328706U true CN213328706U (en) | 2021-06-01 |
Family
ID=76064806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022065706.XU Expired - Fee Related CN213328706U (en) | 2020-09-19 | 2020-09-19 | Gallows is used in bridge construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213328706U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309006A (en) * | 2021-07-01 | 2021-08-27 | 中交二航局第四工程有限公司 | Five-row adjacent parallel suspension casting continuous beam dislocation synchronization equipment and construction method thereof |
| CN113638314A (en) * | 2021-08-09 | 2021-11-12 | 浙江交工交通科技发展有限公司 | Equipment for detecting bridge bottom crack and using method thereof |
| CN114457995A (en) * | 2021-12-29 | 2022-05-10 | 中建铁路投资建设集团有限公司 | Automatic lifting platform device for hanging basket installation |
-
2020
- 2020-09-19 CN CN202022065706.XU patent/CN213328706U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309006A (en) * | 2021-07-01 | 2021-08-27 | 中交二航局第四工程有限公司 | Five-row adjacent parallel suspension casting continuous beam dislocation synchronization equipment and construction method thereof |
| CN113638314A (en) * | 2021-08-09 | 2021-11-12 | 浙江交工交通科技发展有限公司 | Equipment for detecting bridge bottom crack and using method thereof |
| CN114457995A (en) * | 2021-12-29 | 2022-05-10 | 中建铁路投资建设集团有限公司 | Automatic lifting platform device for hanging basket installation |
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Granted publication date: 20210601 |