CN110253738A - A kind of prefabricated box culvert casting concrete equipment - Google Patents
A kind of prefabricated box culvert casting concrete equipment Download PDFInfo
- Publication number
- CN110253738A CN110253738A CN201910638207.4A CN201910638207A CN110253738A CN 110253738 A CN110253738 A CN 110253738A CN 201910638207 A CN201910638207 A CN 201910638207A CN 110253738 A CN110253738 A CN 110253738A
- Authority
- CN
- China
- Prior art keywords
- box culvert
- feed device
- prefabricated box
- casting concrete
- prefabricated
- 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.)
- Pending
Links
- 238000005266 casting Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 33
- 230000000694 effects Effects 0.000 abstract description 9
- 238000002955 isolation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
Abstract
A kind of prefabricated box culvert casting concrete equipment provided by the present application, including feed device and several feeding devices, wherein several feeding devices are symmetrically distributed in around feed device, and feed device passes through support link slot respectively with several feeding devices and is connected.Prefabricated box culvert casting concrete equipment provided by the present application, pass through being used cooperatively for feed device and several feeding devices of surrounding, it can solve in the prior art since single hopper is when the top of prefabricated mould carries out prefabricated to box culvert, unilateral side can only be carried out to pour, concrete is also easy to produce isolation and cold seam phenomenon, can exist and pour interval time too long caused cold seam and other issues, device provided herein can carry out concrete pouring construction to the lateral surface of prefabricated box culvert simultaneously, it can be improved concrete pouring quality, facilitate construction, improves construction effect.
Description
Technical field
This application involves prefabricated box culvert concrete construction technical field in subgrade engineering more particularly to a kind of precast boxes
Contain casting concrete equipment.
Background technique
Box and duct works are the important components in subgrade engineering planning and construction, and box culvert construct technology is as a kind of common
Construction technology, improve construction quality, promote engineering construction development during play great function.Box culvert is applied
There are work technology the advantages such as construction effect is good, construction technology is perfect to be therefore widely used in China's Con struction in Roadbed.?
Country advocates energetically and develops under the background of assembled architecture, and box culvert construct uses assembled scheme, has standardization, module
The characteristics of change, batch production, lightness, the construction of assembled slab culvert concrete are the key that improve quality.
In the work progress of box and duct works, concreting is as one section of important work in prefabricated box culvert work progress
Sequence plays very important effect to entire box and duct works.Currently, prefabricated box culvert is constructed by the way of vertical pour, generally
It is by lifting equipment that hopper is vacantly prefabricated to box culvert progress in the top of prefabricated mould using single hopper.
Since single hopper is when the top of prefabricated mould carries out prefabricated to box culvert, unilateral side can only be carried out and poured, concrete
It is also easy to produce isolation and cold seam phenomenon, can exist and pour interval time too long caused cold seam and other issues.
Summary of the invention
This application provides a kind of prefabricated box culvert casting concrete equipment, to solve in the prior art since single hopper exists
When the top of prefabricated mould carries out prefabricated to box culvert, unilateral side can only be carried out and poured, concrete is also easy to produce isolation and cold seam phenomenon, meeting
In the presence of interval time too long caused cold seam and other issues is poured, device provided herein can be simultaneously to prefabricated box culvert
Lateral surface carries out concrete pouring construction, can be improved concrete pouring quality, facilitates construction, improves construction effect.
It is as follows that the application solves the technical solution that above-mentioned technical problem is taken:
A kind of prefabricated box culvert casting concrete equipment, the equipment include feed device and several feeding devices, if described
Dry feeding device is symmetrically distributed in around the feed device；
The feed device passes through support link slot respectively with several feeding devices and is connected.
Optionally, the angle of the support link slot and horizontal plane is 25-35 °.
Optionally, the opening upwards of the feed device, opening size is gradually reduced the feed device from top to bottom, institute
State the inverted ladder-shaped body structure that feed device is inner hollow.
Optionally, the junction of the feed device bottom sides and the support link slot is equipped with the first discharge port.
Optionally, the quantity of the feeding device is 4.
Optionally, hanging ring is symmetrically arranged on the feed device lateral surface.
Optionally, the feeding device bottom is provided with the second discharge port, and baffle is arranged in the feeding device side periphery.
Optionally, the equipment is all made of is welded with a thickness of the Q235 steel plate of 4mm.
The technical scheme provided by the application includes following advantageous effects:
A kind of prefabricated box culvert casting concrete equipment provided by the present application, including feed device and several feeding devices,
In, several feeding devices are symmetrically distributed in around feed device, and feed device and several feeding devices pass through support connection respectively
Slot is connected.Prefabricated box culvert casting concrete equipment provided by the present application passes through feed device and several feeding devices of surrounding
It is used cooperatively, can solve in the prior art since single hopper is when the top of prefabricated mould carries out prefabricated to box culvert, it can only
It carries out unilateral side to pour, concrete is also easy to produce isolation and cold seam phenomenon, can exist and pour the matter such as interval time too long caused cold seam
Amount problem, device provided herein can carry out concrete pouring construction to the lateral surface of prefabricated box culvert simultaneously, can be improved
Concrete pouring quality facilitates construction, improves construction effect.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the planar structure schematic diagram of prefabricated box culvert casting concrete equipment provided by the embodiments of the present application；
Fig. 2 is the schematic view of facade structure of prefabricated box culvert casting concrete equipment provided by the embodiments of the present application.
Description of symbols: 1- feed device, 2- feeding device, 3- support link slot, the first discharge port of 4-, 5, hanging ring；
The second discharge port of 6-, 7- baffle.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in the application, implement below in conjunction with the application
Attached drawing in example, the technical scheme in the embodiment of the application is clearly and completely described；Obviously, described embodiment
It is only a part of the embodiment of the application, instead of all the embodiments.Based on the embodiment in the application, the common skill in this field
The application protection all should belong in art personnel every other embodiment obtained without making creative work
Range.
Attached Fig. 1 and 2 shows the plane and facade knot of prefabricated box culvert casting concrete equipment provided by the embodiments of the present application
Structure schematic diagram.Such as attached Fig. 1 and 2, prefabricated box culvert casting concrete equipment provided by the embodiments of the present application, the equipment includes feeding
Device 1 and several feeding devices 2, several feeding devices 2 are symmetrically distributed in around the feed device 1.In the application reality
It applies in example, each prefabricated box culvert casting concrete equipment includes 2,4 feeding devices 2 of feed device 1 and 4 feeding device
It is symmetrically distributed in around feed device 1, is not specifically limited in the embodiment of the present application, can be selected according to actual needs
It selects.4 feeding devices 2 are respectively with feed device 1 by supporting link slot 3 to be connected, and e.g., feed device 1 connects a conveying
Device 2 is correspondingly connected with a support link slot 3, and so on.
Prefabricated box culvert casting concrete equipment provided by the embodiments of the present application, including feed device 1 and 4 feeding device 2,
Wherein, 4 feeding devices 2 are symmetrically distributed in around feed device 1, and feed device 1 and 4 feeding device 2 passes through support respectively
Link slot 3 is connected.Prefabricated box culvert casting concrete equipment provided by the embodiments of the present application passes through feed device 1 and surrounding 4
Feeding device 2 is used cooperatively, and can be carried out concrete pouring construction to the lateral surface of prefabricated box culvert simultaneously, be can be improved concrete
Pouring quality facilitates construction, improves construction effect, can solve in the prior art since single hopper is in the top of prefabricated mould
When carrying out prefabricated to box culvert, unilateral side can only be carried out and poured, concrete is also easy to produce isolation and cold seam phenomenon, can be in the presence of when pouring interval
Between it is too long caused by it is cold seam and other issues.
Optionally, the angle of the support link slot 3 and horizontal plane is 25-35 °.
Wherein, when equipment provided by the embodiments of the present application works, by support link slot 3 and horizontal plane, that is, acting surface folder
Angle is set as 25-35 °, and being conducive to concrete in this way can smoothly transfer, and construction action can reduce concrete under this angle
Waste.
Optionally, the opening upwards of the feed device 1, opening size is gradually reduced the feed device 1 from top to bottom,
The feed device 1 is the inverted ladder-shaped body structure of inner hollow；1 bottom sides of feed device and the support link slot 3
Junction be provided with the first discharge port 4；Hanging ring 5 is symmetrically arranged on 1 lateral surface of feed device；The conveying dress
It sets 2 bottoms and is provided with the second discharge port 6, baffle 7 is arranged in 2 side periphery of feeding device；The equipment be all made of with a thickness of
The Q235 steel plate of 4mm is welded.
In the embodiment of the present application, the quantity for supporting link slot is that then the quantity of the first discharge port 4 is 4, the second discharge port
Corresponding 6 quantity is also 4,
Prefabricated box culvert casting concrete equipment provided by the embodiments of the present application comprising feed device 1 and feeding device 2
And support link slot 3 is all made of and is welded with a thickness of the Q235 steel plate of 4mm, the steel plate materials of such thickness specification are more normal
See, equipment provided herein is welded into as raw material using it, the resource utilization of raw material may be implemented, reduction is constructed into
This, is avoided wasting.
Meanwhile hanging ring 5 is symmetrically arranged on 1 lateral surface of feed device, the hanging ring 5 uses diameter for the circle of 16mm
Steel production, the setting of hanging ring 5 can when the device is in use, by hanging ring 5 by apparatus bound on gantry crane, so that equipment be led to
It crosses gantry crane and is moved to prefabricated box culvert center.
Exemplary type, the embodiment of the present application provides a kind of prefabricated box culvert casting concrete equipment, the feed device 1 of the equipment
Suitable for reading is the square that side length is 80cm, and inner bottom surface is the square of 20cm, and lateral surface is 4 compositions of falling isosceles trapezoid, wherein
The height of first discharge port 4 is 15cm；The width for supporting link slot is 20cm, and support link slot 3 and the angle of horizontal plane are 25-
35 °, it is possible thereby to which the length of support link slot 3 is arranged and supports link slot 3 and height of 1 junction of feed device apart from horizontal plane
Degree；The length of second discharge port 6 is 40cm, and width 24cm, surrounding baffle 7 height in periphery is 23.66cm.According to above-mentioned size into
Row construction can either guarantee in concreting, concrete can be transferred smoothly, and can reduce concrete waste.
For installing and using convenient for prefabricated box culvert casting concrete equipment provided by the embodiments of the present application, the embodiment of the present application
Additionally provide the construction method explanation of prefabricated box culvert casting concrete equipment.Prefabricated box culvert provided by the embodiments of the present application pours mixed
The construction method of solidifying indigenous equipment is as follows:
After film is closed in prefabricated box culvert inspection declaration, prefabricated box culvert casting concrete equipment is moved to by hanging ring 5 using gantry crane
Behind prefabricated box culvert center, concrete is transferred into feed device 1 using hopper, the concrete in feed device 1 along
The position of first discharge port 4, through the support decentralization of link slot 3 into feeding device 2, concrete in feeding device 2 is along the
Two discharge ports 6 start concrete construction.
By the research to prefabricated box culvert casting concrete device in the application, provides a kind of prefabricated box culvert and pour coagulation
Indigenous equipment can be effectively solved concreting problem rambunctious, save the duration, and whole process is steady safe, fast
Victory improves construction effect, and is verified by the construction of practical prefabricated box culvert, and research achievement has certain finger to similar engineering
Lead meaning and practical application value.
One kind provided by the present application is easy to operate, easily carry out construction prefabricated box culvert casting concrete equipment, be suitable in
Prefabricated box culvert, piping lane prefabricated components concrete pouring construction pass through feed device 1 and surrounding feeding device in the embodiment of the present application
2 be used cooperatively, can solve in the prior art since single hopper is when the top of prefabricated mould carries out prefabricated to box culvert, only
It can be carried out unilateral side to pour, concrete is also easy to produce isolation and cold seam phenomenon, can exist and pour interval time too long caused cold seam etc.
Quality problems, device provided herein can carry out concrete pouring construction, Neng Gouti to the lateral surface of prefabricated box culvert simultaneously
High concrete pouring quality facilitates construction, improves construction effect.Prefabricated box culvert casting concrete device.
It should be noted that the relational terms of such as " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that including the article of a series of elements or equipment not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
The above is only the specific embodiment of the application, is made skilled artisans appreciate that or realizing this Shen
Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
It should be understood that the application is not limited to the content for being described above and being shown in the accompanying drawings, and can
To carry out various modifications and change without departing from the scope.Scope of the present application is only limited by the accompanying claims.
Claims (8)
1. a kind of prefabricated box culvert casting concrete equipment, which is characterized in that the equipment includes feed device (1) and several conveyings
Device (2), several feeding devices (2) are symmetrically distributed in around the feed device (1)；
The feed device (1) is with several feeding devices (2) respectively by supporting link slot (3) to be connected.
2. prefabricated box culvert casting concrete equipment according to claim 1, which is characterized in that the support link slot (3)
Angle with horizontal plane is 25-35 °.
3. prefabricated box culvert casting concrete equipment according to claim 1, which is characterized in that the feed device (1)
Opening upwards, opening size is gradually reduced the feed device (1) from top to bottom, and the feed device (1) is inner hollow
Inverted ladder-shaped body structure.
4. prefabricated box culvert casting concrete equipment according to claim 1, which is characterized in that feed device (1) bottom
Portion side and the junction of support link slot (3) are provided with the first discharge port (4).
5. prefabricated box culvert casting concrete equipment according to claim 1, which is characterized in that the feeding device (2)
Quantity is 4.
6. prefabricated box culvert casting concrete equipment according to claim 1, which is characterized in that the feed device (1) is outside
Hanging ring (5) are symmetrically arranged on side.
7. prefabricated box culvert casting concrete equipment according to claim 1, which is characterized in that feeding device (2) bottom
Portion is provided with the second discharge port (6), and baffle (7) are arranged in feeding device (2) side periphery.
8. prefabricated box culvert casting concrete equipment according to claim 1, which is characterized in that the equipment is all made of thickness
It is welded for the Q235 steel plate of 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638207.4A CN110253738A (en) | 2019-07-16 | 2019-07-16 | A kind of prefabricated box culvert casting concrete equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638207.4A CN110253738A (en) | 2019-07-16 | 2019-07-16 | A kind of prefabricated box culvert casting concrete equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110253738A true CN110253738A (en) | 2019-09-20 |
Family
ID=67926194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910638207.4A Pending CN110253738A (en) | 2019-07-16 | 2019-07-16 | A kind of prefabricated box culvert casting concrete equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110253738A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114102800A (en) * | 2021-11-26 | 2022-03-01 | 中铁十局集团青岛工程有限公司 | Box concrete pours device fast |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001088308A1 (en) * | 2000-05-15 | 2001-11-22 | Rensel Torbjoern | Device for jointing of concrete elements |
| CN201128656Y (en) * | 2008-03-16 | 2008-10-08 | 山东新城建工股份有限公司 | Multifunctional hopper for construction |
| DE102008015067B3 (en) * | 2008-03-19 | 2009-11-26 | Weckenmann Anlagentechnik Gmbh & Co. Kg | Concrete-prefabricated part manufacturing device, has distribution device guiding fresh concrete to delivery device, and concrete container assigned to additional measuring device for determining actual concrete quantity in container |
| CN203145473U (en) * | 2013-01-04 | 2013-08-21 | 中铁大桥局集团第四工程有限公司 | Concrete pouring distributing device |
| CN104555391A (en) * | 2015-01-19 | 2015-04-29 | 中国葛洲坝集团股份有限公司 | Continuous transporting device and method capable of simultaneously unloading concretes by multiple points |
| CN205476501U (en) * | 2015-12-31 | 2016-08-17 | 广州市第四建筑工程有限公司 | Device is pour fast to multi -functional concrete |
| CN205955218U (en) * | 2016-08-22 | 2017-02-15 | 中国二十冶集团有限公司 | A hopper for beam slab precast concrete concreting construction |
| CN210477335U (en) * | 2019-07-16 | 2020-05-08 | 中交路桥北方工程有限公司 | Precast box culvert concreting equipment |
-
2019
- 2019-07-16 CN CN201910638207.4A patent/CN110253738A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001088308A1 (en) * | 2000-05-15 | 2001-11-22 | Rensel Torbjoern | Device for jointing of concrete elements |
| CN201128656Y (en) * | 2008-03-16 | 2008-10-08 | 山东新城建工股份有限公司 | Multifunctional hopper for construction |
| DE102008015067B3 (en) * | 2008-03-19 | 2009-11-26 | Weckenmann Anlagentechnik Gmbh & Co. Kg | Concrete-prefabricated part manufacturing device, has distribution device guiding fresh concrete to delivery device, and concrete container assigned to additional measuring device for determining actual concrete quantity in container |
| CN203145473U (en) * | 2013-01-04 | 2013-08-21 | 中铁大桥局集团第四工程有限公司 | Concrete pouring distributing device |
| CN104555391A (en) * | 2015-01-19 | 2015-04-29 | 中国葛洲坝集团股份有限公司 | Continuous transporting device and method capable of simultaneously unloading concretes by multiple points |
| CN205476501U (en) * | 2015-12-31 | 2016-08-17 | 广州市第四建筑工程有限公司 | Device is pour fast to multi -functional concrete |
| CN205955218U (en) * | 2016-08-22 | 2017-02-15 | 中国二十冶集团有限公司 | A hopper for beam slab precast concrete concreting construction |
| CN210477335U (en) * | 2019-07-16 | 2020-05-08 | 中交路桥北方工程有限公司 | Precast box culvert concreting equipment |
Non-Patent Citations (1)
| Title |
|---|
| 中国建筑科学研究院 混凝土研究所: "《混凝土实用手册》", 31 May 1987, 中国建筑工业出版社, pages: 182 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114102800A (en) * | 2021-11-26 | 2022-03-01 | 中铁十局集团青岛工程有限公司 | Box concrete pours device fast |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108612260A (en) | A kind of constructional column top concrete pours once-molding construction process and its device | |
| CN206048507U (en) | A kind of agitating device for building | |
| CN206971732U (en) | A kind of doubly-linked beam forms pouring structure | |
| CN106758840B (en) | Gradient concreting method | |
| CN110145121A (en) | The construction method of constructional column concreting | |
| CN110253738A (en) | A kind of prefabricated box culvert casting concrete equipment | |
| CN206501262U (en) | A kind of automatic watering device of stirrer | |
| CN108638304A (en) | A kind of override type stair are with pouring mold | |
| CN207829307U (en) | A kind of penetrative polymer mortar protective layer cushion block | |
| CN207436503U (en) | Efficient construction of precast floorslab hangs membrane module | |
| CN107327046A (en) | A kind of steel pipe bundle combining structure | |
| CN108915121A (en) | A kind of IPS Cast-in-place concrete shear wall self-heat conserving construction method | |
| CN209652990U (en) | The antiseepage plugging structure of the hole for hoist of basement computer room | |
| CN210477335U (en) | Precast box culvert concreting equipment | |
| CN207958977U (en) | A kind of device to bind for bridge hollow pier | |
| CN104453234B (en) | Construction method with variable cross-section super large loop configuration and the self-compacting concrete used | |
| CN109868923A (en) | One kind, which dissipates, spells plank sheathing exposed concrete construction method | |
| CN207846424U (en) | Structure and device suitable for the cast of deep narrow structure inner concrete | |
| CN205704589U (en) | A kind of foamed brick shaped device | |
| CN206970057U (en) | A kind of tower crane base | |
| CN208068539U (en) | A kind of piping lane precast segment lubricating substance slot device | |
| CN206825628U (en) | A kind of Construction of Civil Engineering pours device with concrete slab | |
| CN206264131U (en) | A kind of high tenacity cement industry goods of furniture for display rather than for use production equipment | |
| CN208073000U (en) | Cast-in-place reinforced concrete plate strip thickness control device | |
| CN205576855U (en) | Device is pour in reposition of redundant personnel of dual -purpose concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240329 Address after: 101107 room 001, 1 / F, 8 Tonghu street, Lucheng Town, Tongzhou District, Beijing Applicant after: ROAD & BRIDGE INTERNATIONAL Co.,Ltd. Country or region after: China Applicant after: ZHONGJIAO ROAD & BRIDGE NORTH ENGINEERING Co.,Ltd. Address before: 100176 Room 305, 3rd floor, zone 2, No.12, Hongda North Road, economic and Technological Development Zone, Daxing District, Beijing Applicant before: ZHONGJIAO ROAD & BRIDGE NORTH ENGINEERING Co.,Ltd. Country or region before: China Applicant before: ROAD & BRIDGE INTERNATIONAL Co.,Ltd. |
|
| TA01 | Transfer of patent application right |