CN110409323A - A kind of bridge maintaining reinforcing operating device - Google Patents
A kind of bridge maintaining reinforcing operating device Download PDFInfo
- Publication number
- CN110409323A CN110409323A CN201910729627.3A CN201910729627A CN110409323A CN 110409323 A CN110409323 A CN 110409323A CN 201910729627 A CN201910729627 A CN 201910729627A CN 110409323 A CN110409323 A CN 110409323A
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- China
- Prior art keywords
- cabinet
- battery group
- storage vat
- operating device
- electrically connected
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
The invention discloses a kind of bridge maintainings to be equipped with multiple universal wheels with reinforcing operating device, including cabinet, the bottom end of cabinet, and the top of cabinet is equipped with wind generator set, and mounting rack is equipped in cabinet, battery group is equipped on mounting rack；Storage vat, heating mechanism and pressure pump are installed in cabinet, heating tube is arranged on the lateral wall of storage vat, working fluid is equipped with inside heating tube, feed pipe and discharge nozzle are fixedly plugged on storage vat, winding mechanism is installed, the bottom end of cabinet is equipped with electric sliding rail, slidably connects material injecting mechanism on electric sliding rail in cabinet, material feeding hose is communicated on pressure pump, and material feeding hose is wound around in winding mechanism and is connected to material injecting mechanism.The present invention has rational design, heating mechanism is arranged the grouting resin inside storage vat is heated and kept the temperature, guarantees that grouting resin glue will not solidify in material feeding, while not needing the operation for manually carrying out bridge strengthening, power, energy conservation and environmental protection are provided using wind generator set for device.
Description
Technical field
The present invention relates to bridge recovery technique field more particularly to a kind of bridge maintaining reinforcing operating devices.
Background technique
Bridge is generally made of superstructure, substructure, support and attached structure, and superstructure is also known as spanning knot
Structure is across the primary structure of obstacle, and substructure includes abutment, bridge pier and basis, and support is bridge span structure and bridge pier or bridge
The load transfer device of the bearing place setting of platform, attached structure then refer to transition slab at bridge head, truncated cone banking, shore protection, training works etc..With
Advancing by leaps and bounds for bridge technology, mass concrete is applied more and more in bridge structure, in course of hardening,
Since concrete is dehydrated, cause to shrink, or influenced by the temperature difference of temperature height, the influence of strong wind, cause breathing uneven and
Crack is generated, crack will affect the overall stability of bridge, and the method for the reinforcing that mends a split at present is mostly by pouring into crack
Dedicated grouting resin glue.
Currently, common Bridge repair and reinforcement device requires people's real-time control, and the resin glue that is in the milk be reduced to it is certain
Solid will be frozen into below temperature, it is also necessary to carry attemperator and carry grouting resin, operation is extremely inconvenient.
Summary of the invention
In order to solve the problems in the prior art, the purpose of the present invention is to propose to reinforce operation dress for a kind of bridge maintaining
It sets.
To achieve the goals above, present invention employs following technical solutions:
A kind of bridge maintaining use reinforcing operating device, including cabinet, the bottom end of the cabinet are equipped with multiple universal wheels, the case
The top of body is equipped with wind generator set, and mounting rack is equipped in the cabinet, battery group is equipped on the mounting rack,
And it is electrically connected between wind generator set and battery group；
Storage vat, heating mechanism and pressure pump are installed in the cabinet, are arranged with heating tube on the lateral wall of the storage vat,
And heating mechanism is connected to heating tube, and working fluid is equipped with inside the heating tube, is fixedly plugged with charging on the storage vat
Pipe and discharge nozzle, and the upper end of feed pipe extends to outside cabinet, and discharge nozzle is connected to pressure pump by connecting tube；
Winding mechanism is installed, the bottom end of the cabinet is equipped with electric sliding rail, the electric sliding rail and electric power storage in the cabinet
It is electrically connected between the group of pond, material injecting mechanism is slidably connected on the electric sliding rail, material feeding hose is communicated on the pressure pump,
And material feeding hose is wound around in winding mechanism and is connected to material injecting mechanism.
Preferably, controller is installed on the inner roof wall of the cabinet, and is electrically connected between battery group and controller.
Preferably, the wind generator set includes the outer outlet body for being mounted on cabinet top, horizontal peace on the outer outlet body
The one end being located at outside outer outlet body equipped with trunnion axis, on the trunnion axis is equipped with wind wheel, and it is intracorporal that the trunnion axis is located at outer cover
One end is equipped with gear wheel, and generator is equipped in the outer outlet body, and pinion gear is equipped on the input shaft of the generator, and
Pinion gear is engaged with gear wheel, and the number of teeth of gear wheel is more than the number of teeth of pinion gear, the output end and battery of the generator
It is electrically connected between group.
Preferably, the pressure pump includes pedestal, and pedestal is mounted in the inner bottom wall of cabinet, is equipped on the pedestal
The pump housing is electrically connected between the pump housing and battery group, is communicated with feeding pipe and drainage conduit on the pump housing, and feeding pipe with
Connecting tube is connected by connecting flange, and drainage conduit is connected to material feeding hose, is equipped with check (non-return) valve on the feeding pipe.
Preferably, the winding mechanism includes winding cylinder, and material feeding hose is wound around on winding cylinder, and the winding cylinder passes through
Shaft is mounted on cabinet, is equipped with clockwork spring between the shaft and cabinet.
Preferably, the material injecting mechanism includes the sliding seat being slidably connected on electric sliding rail, the lower end of the sliding seat
Face is fixedly installed with mounting rack, electric telescopic rod is equipped on the mounting rack, between the electric telescopic rod and battery group
It is electrically connected, the lower end of the electric telescopic rod is fixedly installed with filling head, and material feeding hose is connected to filling head.
Preferably, the heating mechanism includes the heater being mounted in cabinet inner bottom wall, the battery group and heating
It is electrically connected between device, connection frame is fixedly connected on the heater, be connected with U-shaped frame on the connection frame, the two of U-shaped frame
End extends in storage vat and is separately installed with temperature-sensitive head and temperature controller, and is electrically connected between temperature controller and heater；
Preferably, return pipe and insulating tube are communicated on the heater, the end of the insulating tube is communicated with communicating pipe, described
Solenoid valve is installed on communicating pipe, is electrically connected between the solenoid valve and battery group, the end of the communicating pipe and return pipe
End is connected to the upper/lower terminal of heating tube respectively.
Preferably, the top of the storage vat is equipped with motor, and is electrically connected between motor and battery group, the electricity
The output end of machine extends in storage vat and is equipped with stirring rod.
Compared with prior art, the invention has the benefit that
1, electric energy is converted wind energy by wind generator set, and electric energy is stored by battery group, and then to this
It partially needs the components of power to provide electric energy in invention, guarantees the normal operation of whole device, energy conservation and environmental protection；
2, circulating-heating is carried out to the working fluid inside heating tube using heating mechanism, guarantees the temperature of heating tube internal liquid
In certain range, and then guarantee that heating tube to the effect for resin glue heating of being in the milk in storage vat, shortens grouting resin glue
The time of thawing, while motor and stirring rod are stirred grouting resin glue, guarantee the homogeneous heating of grouting resin, simultaneously
Guarantee that grouting resin is equably contacted with the higher storage vat inner wall of temperature, shortens the time that grouting resin melts；
3, it drives filling head in the horizontal direction and position movement on vertical direction by electric sliding rail and electric telescopic rod, guarantees
In the case where device does not move, filling head can realize that material feeding is reinforced to a certain range of crack, when filling head is mobile, around
If mechanism effectively can realize winding and release to material feeding hose, guarantee material injecting mechanism on any position on electric sliding rail
Material feeding hose all will not avoid generating friction between material feeding hose and ground, cause the shortening of service life with ground face contact.
To sum up, the present invention has rational design, setting heating mechanism to the grouting resin inside storage vat carry out heating with
Heat preservation guarantees that grouting resin glue will not solidify in material feeding, while not needing the operation for manually carrying out bridge strengthening, utilizes wind-force
Power generation mechanism provides power, energy conservation and environmental protection for device.
Detailed description of the invention
Fig. 1: the bridge maintaining of the present invention structural schematic diagram for reinforcing operating device；
The structural schematic diagram of wind generator set in Fig. 2: Fig. 1；
The structural schematic diagram of heating mechanism in Fig. 3: Fig. 1；
The structural schematic diagram of pressure pump in Fig. 4: Fig. 1；
The structural schematic diagram of Fig. 5: Tu1Zhong winding mechanism；
The structural schematic diagram of material injecting mechanism in Fig. 6: Fig. 1；
In figure: 1- cabinet；2- controller；3- wind generator set, 301- generator, 302- gear wheel, 303- pinion gear, 304-
Trunnion axis, 305- wind wheel, 306- outer outlet body；4- heating tube；5- battery group；6- pressure pump, 601- drainage conduit, the 602- pump housing,
603- check (non-return) valve, 604- feeding pipe, 605- pedestal；7- winding mechanism, 701- winding cylinder, 702- shaft, 703- clockwork spring；8- material feeding
Hose；9- heating mechanism, 901- heater, 902- connection frame, the U-shaped frame of 903-, 904- temperature controller, 905- temperature-sensitive head, 906- connect
Siphunculus, 907- return pipe, 908- insulating tube, 909- solenoid valve；10- material injecting mechanism, 1001- sliding seat, 1002- electric expansion
Bar, 1003- filling head, 1004- mounting rack；11- electric sliding rail；12- mounting rack；13- storage vat；14- motor；15- feed pipe；
16- universal wheel.
Specific embodiment
Following embodiment only exists in illustrative purpose, limits the scope of the invention without being intended to.
Embodiment
Referring to Fig.1-6, a kind of bridge maintaining is symmetrically installed with reinforcing operating device, including cabinet 1, the bottom end of cabinet 1
Four universal wheels 16, the top of cabinet 1 are equipped with wind generator set 3, are equipped with mounting rack 12 in cabinet 1, on mounting rack 12
Battery group 5 is installed, controller 2 is installed, and electrically connect on the inner roof wall of cabinet 1 between battery group 5 and controller 2
It connects；Wind generator set 3 includes the outer outlet body 306 for being mounted on 1 top of cabinet, is horizontally installed with trunnion axis on outer outlet body 306
304, the one end being located on trunnion axis 304 outside outer outlet body 306 is equipped with wind wheel 305, and trunnion axis 304 is located in outer outlet body 306
One end is equipped with gear wheel 302, and generator 301 is equipped in outer outlet body 306, small tooth is equipped on the input shaft of generator 301
Wheel 303, and pinion gear 303 is engaged with gear wheel 302, and the number of teeth of gear wheel 302 is more than the number of teeth of pinion gear 303, guarantees hair
The revolving speed of 301 input shaft of motor is greater than the revolving speed of trunnion axis 304, electric between the output end and battery group 5 of the generator 301
Property connection；
Storage vat 13, heating mechanism 9 and pressure pump 6 are installed in cabinet 1, are arranged with heating tube 4 on the lateral wall of storage vat 13,
And heating mechanism 9 is connected to heating tube 4, and working fluid is equipped with inside heating tube 4, is fixedly plugged with feed pipe 15 on storage vat 13
And discharge nozzle, and the upper end of feed pipe 15 extends to outside cabinet 1, and discharge nozzle is connected to pressure pump 6 by connecting tube；Storage vat
13 top is equipped with motor 14, and is electrically connected between motor 14 and battery group 5, and the output end of motor 14 extends to storing
In bucket 13 and stirring rod is installed；
Heating mechanism 9 includes the heater 901 being mounted in 1 inner bottom wall of cabinet, between battery group 5 and heater 901 electrically
It connects, is fixedly connected with connection frame 902 on heater 901, U-shaped frame 903, the both ends of U-shaped frame 903 are connected on connection frame 902
It extends in storage vat 13 and is separately installed with temperature-sensitive head 905 and temperature controller 904, and is electric between temperature controller 904 and heater 901
Property connection；Return pipe 907 and insulating tube 908 are communicated on heater 901, the end of insulating tube 908 is communicated with communicating pipe 906,
Solenoid valve 909 is installed on communicating pipe 906, is electrically connected between solenoid valve 909 and battery group 5, communicating pipe 906 and is returned
The end of flow tube 907 is connected to the upper/lower terminal of heating tube 4 respectively；
Pressure pump 6 includes pedestal 605, and pedestal 605 is mounted in the inner bottom wall of cabinet 1, and the pump housing 602 is equipped on pedestal 605,
It is electrically connected between the pump housing 602 and battery group 5, feeding pipe 604 and drainage conduit 601, and feeding pipe is communicated on the pump housing 602
604 are connect with connecting tube by connecting flange, and drainage conduit 601 is connected to material feeding hose 8, are equipped on feeding pipe 604 non-return
Valve 603；
Winding mechanism 7 is installed, winding mechanism 7 includes winding cylinder 701, and material feeding hose 8 is wound around winding cylinder 701 in cabinet 1
On, winding cylinder 701 is mounted on cabinet 1 by shaft 702, and clockwork spring 703 is equipped between shaft 702 and cabinet 1；
The bottom end of cabinet 1 is equipped with electric sliding rail 11, is electrically connected between electric sliding rail 11 and battery group 5, electric sliding rail 11
On slidably connect material injecting mechanism 10, material feeding hose 8 is communicated on pressure pump 6, and material feeding hose 8 is wound around in winding mechanism 7
And it is connected to material injecting mechanism 10；Material injecting mechanism 10 includes the sliding seat 1001 being slidably connected on electric sliding rail 11, sliding seat
1001 lower end surface is fixedly installed with mounting rack 1004, and electric telescopic rod 1002, electric telescopic rod are equipped on mounting rack 1004
It is electrically connected between 1002 and battery group 5, the lower end of electric telescopic rod 1002 is fixedly installed with filling head 1003, and material feeding is soft
Pipe 8 is connected to filling head 1003.
For the present invention in energy storage, wind drives wind wheel 305 to rotate, then drives gear wheel while trunnion axis 304 rotates with it
302 rotations, the pinion gear 303 engaged with gear wheel 302 rotate, then mechanical energy is converted to by the input shaft rotation of generator 301
Internal electric energy is input in battery group 5 and stores by electric energy, generator 301.
The present invention is when carrying out the operation of bridge repairing and reinforcement, by feed pipe 15 to addition grouting resin inside storage vat 13
Glue, the heater 901 in heating mechanism 9 heat working fluid, and the liquid for heating completion passes through 908 company of flowing to of insulating tube
In siphunculus 906, communicating pipe 906 imports the liquid after heating in heating tube 4, by heating tube 4 to the filling inside storage vat 13
Slurry resin glue is heated, and the circulation of 4 internal liquid of heating tube is realized by return pipe 907, guarantees 4 internal liquid of heating tube
Temperature is in certain range, guarantees the effect of 4 pairs of heating tube grouting resin glue heating；At the same time, controller 2 passes through storage
Battery pack 5 is powered motor 14, and motor 14 drives stirring rod rotation, is stirred to grouting resin glue, guarantees grouting tree
The homogeneous heating of rouge glue；When grouting resin glue inside storage vat 13 reaches uniform working fluid state, controller 2 passes through
Battery group 5 powers to electric sliding rail 11 and electric telescopic rod 1002, and sliding seat 1001 slides into crack on electric sliding rail 11
Corresponding position, subsequent electric telescopic rod 1002 extend, until the lower end of filling head 1003 is located in crack；Then, controller 2
The pump housing 602 is powered by battery group 5, pressure pump 6 is imported material in material feeding hose 8 by connecting tube, and material feeding is soft
Grouting resin glue inside pipe 8 is flowed by filling head 1003 realizes bridge repairing in crack.
It is worth noting that: material injecting mechanism 10 on electric sliding rail 11 to far from winding mechanism 7 square upward sliding when, note
Material hose 8 drives winding cylinder 701 to rotate clockwise under the action of frictional force, then clockwork spring 703 stores power, a part of material feeding hose 8
Be detached from winding cylinder 701, then electric sliding rail 11 on this basis to close to winding mechanism 7 square upward sliding when, clockwork spring 703
Gradually unclamping generation power drives winding cylinder 701 to rotate counterclockwise, and part material feeding hose 8 is wound around on winding cylinder 701, is guaranteed
Material injecting mechanism 10 on any position on electric sliding rail 11 material feeding hose 8 all will not avoid material feeding hose 8 with ground face contact
Friction is generated between ground, causes the shortening of service life.
Claims (8)
1. a kind of bridge maintaining reinforcing operating device, including cabinet (1), it is characterised in that: install the bottom end of the cabinet (1)
Have multiple universal wheels (16), the top of the cabinet (1) is equipped with wind generator set (3), is equipped in the cabinet (1)
It shelves (12), is equipped with battery group (5) on the mounting rack (12), and between wind generator set (3) and battery group (5)
It is electrically connected；
Storage vat (13), heating mechanism (9) and pressure pump (6), the outside of the storage vat (13) are installed in the cabinet (1)
It is arranged on wall heating tube (4), and heating mechanism (9) is connected to heating tube (4), flow fluid is equipped with inside the heating tube (4)
Body is fixedly plugged with feed pipe (15) and discharge nozzle on the storage vat (13), and the upper end of feed pipe (15) extends to cabinet
(1) outside, and discharge nozzle is connected to pressure pump (6) by connecting tube；
It is equipped with winding mechanism (7) in the cabinet (1), the bottom end of the cabinet (1) is equipped with electric sliding rail (11), the electricity
It is electrically connected between dynamic sliding rail (11) and battery group (5), slidably connects material injecting mechanism (10) on the electric sliding rail (11),
It is communicated with material feeding hose (8) on the pressure pump (6), and material feeding hose (8) is wound around on winding mechanism (7) and and material injecting mechanism
(10) it is connected to.
2. bridge maintaining according to claim 1 reinforcing operating device, it is characterised in that: the interior top of the cabinet (1)
It is equipped on wall controller (2), and is electrically connected between battery group (5) and controller (2).
3. bridge maintaining according to claim 1 reinforcing operating device, it is characterised in that: the wind generator set
(3) include the outer outlet body (306) for being mounted on cabinet (1) top, be horizontally installed with trunnion axis (304) on the outer outlet body (306),
It is located at the one end of outer outlet body (306) outside on the trunnion axis (304) to be equipped with wind wheel (305), the trunnion axis (304) is located at outer
One end in cover (306) is equipped with gear wheel (302), is equipped with generator (301), the hair in the outer outlet body (306)
It is equipped on the input shaft of motor (301) pinion gear (303), and pinion gear (303) is engaged with gear wheel (302), and gear wheel
(302) the number of teeth is more than the number of teeth of pinion gear (303), between the output end and battery group (5) of the generator (301) electrically
Connection.
4. bridge maintaining according to claim 1 is with reinforcing operating device, it is characterised in that: the pressure pump (6) includes
Pedestal (605), and pedestal (605) is mounted in the inner bottom wall of cabinet (1), is equipped with the pump housing (602) on the pedestal (605),
It is electrically connected between the pump housing (602) and battery group (5), is communicated with feeding pipe (604) and discharge on the pump housing (602)
It manages (601), and feeding pipe (604) is connect with connecting tube by connecting flange, and drainage conduit (601) is connected to material feeding hose (8),
Check (non-return) valve (603) are installed on the feeding pipe (604).
5. bridge maintaining according to claim 1 reinforcing operating device, it is characterised in that: winding mechanism (7) packet
It includes winding cylinder (701), and material feeding hose (8) is wound around on winding cylinder (701), the winding cylinder (701) is pacified by shaft (702)
On cabinet (1), clockwork spring (703) are installed between the shaft (702) and cabinet (1).
6. bridge maintaining according to claim 1 reinforcing operating device, it is characterised in that: material injecting mechanism (10) packet
The sliding seat (1001) being slidably connected on electric sliding rail (11) is included, the lower end surface of the sliding seat (1001) is fixedly installed with peace
It shelves (1004), is equipped with electric telescopic rod (1002) on the mounting rack (1004), the electric telescopic rod (1002) and storage
Battery pack is electrically connected between (5), and the lower end of the electric telescopic rod (1002) is fixedly installed with filling head (1003), and material feeding
Hose (8) is connected to filling head (1003).
7. bridge maintaining according to claim 1 reinforcing operating device, it is characterised in that: heating mechanism (9) packet
The heater (901) being mounted in cabinet (1) inner bottom wall is included, is electrically connected between the battery group (5) and heater (901)
It connects, is fixedly connected with connection frame (902) on the heater (901), be connected with U-shaped frame (903), U on the connection frame (902)
The both ends of type frame (903) extend in storage vat (13) and are separately installed with temperature-sensitive head (905) and temperature controller (904), and temperature control
It is electrically connected between device (904) and heater (901)；
Return pipe (907) and insulating tube (908), the end connection of the insulating tube (908) are communicated on the heater (901)
Have communicating pipe (906), is equipped with solenoid valve (909) on the communicating pipe (906), the solenoid valve (909) and battery group (5)
Between be electrically connected, the end of the communicating pipe (906) and return pipe (907) respectively with the upper/lower terminal of heating tube (4) connect
It is logical.
8. bridge maintaining according to claim 1 reinforcing operating device, it is characterised in that: the top of the storage vat (13)
End is equipped with motor (14), and is electrically connected between motor (14) and battery group (5), and the output end of the motor (14) extends
In to storage vat (13) and stirring rod is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729627.3A CN110409323A (en) | 2019-08-08 | 2019-08-08 | A kind of bridge maintaining reinforcing operating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729627.3A CN110409323A (en) | 2019-08-08 | 2019-08-08 | A kind of bridge maintaining reinforcing operating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110409323A true CN110409323A (en) | 2019-11-05 |
Family
ID=68366703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910729627.3A Pending CN110409323A (en) | 2019-08-08 | 2019-08-08 | A kind of bridge maintaining reinforcing operating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110409323A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235802A (en) * | 2007-11-29 | 2008-08-06 | 黄金伦 | Low speed wind wheel generation |
| CN206986759U (en) * | 2017-11-03 | 2018-02-09 | 吴君国 | A kind of road and bridge crack reinforcing and repairing irrigator |
| CN207418067U (en) * | 2017-10-31 | 2018-05-29 | 盐城市大唐瑞尔汽车装备有限公司 | A kind of charging pile tube rolling device |
| CN207498842U (en) * | 2017-11-28 | 2018-06-15 | 林传威 | A kind of bridge maintaining reinforcing operating device |
| KR20190073735A (en) * | 2017-12-19 | 2019-06-27 | 학교법인 송원대학교 | High frequency induction heating device for separating girder and floor plate |
| CN109944174A (en) * | 2019-04-30 | 2019-06-28 | 厦门合诚工程技术有限公司 | A kind of bridge maintaining reinforcing operating device |
-
2019
- 2019-08-08 CN CN201910729627.3A patent/CN110409323A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235802A (en) * | 2007-11-29 | 2008-08-06 | 黄金伦 | Low speed wind wheel generation |
| CN207418067U (en) * | 2017-10-31 | 2018-05-29 | 盐城市大唐瑞尔汽车装备有限公司 | A kind of charging pile tube rolling device |
| CN206986759U (en) * | 2017-11-03 | 2018-02-09 | 吴君国 | A kind of road and bridge crack reinforcing and repairing irrigator |
| CN207498842U (en) * | 2017-11-28 | 2018-06-15 | 林传威 | A kind of bridge maintaining reinforcing operating device |
| KR20190073735A (en) * | 2017-12-19 | 2019-06-27 | 학교법인 송원대학교 | High frequency induction heating device for separating girder and floor plate |
| CN109944174A (en) * | 2019-04-30 | 2019-06-28 | 厦门合诚工程技术有限公司 | A kind of bridge maintaining reinforcing operating device |
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Application publication date: 20191105 |