CN203808555U - Assembled support for shear wall prefabricated members - Google Patents
Assembled support for shear wall prefabricated members Download PDFInfo
- Publication number
- CN203808555U CN203808555U CN201420246199.1U CN201420246199U CN203808555U CN 203808555 U CN203808555 U CN 203808555U CN 201420246199 U CN201420246199 U CN 201420246199U CN 203808555 U CN203808555 U CN 203808555U
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- CN
- China
- Prior art keywords
- steel pipe
- screw thread
- lower steel
- shear wall
- upper steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 192
- 239000010959 steel Substances 0.000 claims abstract description 192
- 238000005452 bending Methods 0.000 claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 43
- 229910052742 iron Inorganic materials 0.000 claims description 22
- 230000004323 axial length Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 abstract 5
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model relates to an assembled support for shear wall prefabricated members. The assembled support comprises a lower steel pipe, a regulator and an upper steel pipe. One end of the lower steel pipe is used for fixing, the outer surface, close to the end, of the other end of the lower steel pipe is provided with a thread, and a slotted hole is axially formed in the threaded section of the lower steel pipe. The outer diameter of the upper steel pipe is smaller than the inner diameter of the lower steel pipe. A plurality of round holes are formed in the outer surface, above the lower end, of the upper steel pipe, and are distributed on the same straight line along the axial direction of the upper steel pipe. The lower end of the upper steel pipe extends in the lower steel pipe, and a fixing device is arranged at the upper end of the upper steel pipe. The regulator comprises regulating threads, regulating handles arranged on the regulating threads, and a bending bolt. The regulating threads are arranged on the threaded section of the lower steel pipe, and the bending bolt can be inserted in or pulled from one of the round holes of the upper steel pipe. The assembled support for the shear wall prefabricated members is capable of regulating perpendicularity of shear walls, and is simple and stable in structure and convenient to operate.
Description
Technical field
The utility model relates to technical field of building construction, particularly a kind of assembled shear wall prefabricated units bracing frame.
Background technology
Shear wall claims again wind resistance wall, structural wall.The body of wall of the horizontal loading that in house or structure, main bearing load or geological process cause.The shearing wall support structure of traditional approach is mainly fastener type steel pipe scaffold, has the features such as bearing capacity is large, easy accessibility due to fastener type steel pipe scaffold, is widely used in building field.But along with the new of fabricated shear wall structure rises, also more and more higher to the requirement of supporting member, the weak point that conventional steel fastener scaffold embodies is mainly:
1. fastener (particularly screw rod) is easily lost, and transmits load and internal force by skid resistance;
2. the rod member of Nodes is eccentric connection, thereby has reduced its supporting capacity;
3. the impact of the quality of connection fastener sole mass of fastener node and workman's operation is remarkable;
4. be inconvenient to control the verticality of wall.
Utility model content
The purpose of this utility model is to overcome existing above-mentioned deficiency in prior art, and a kind of assembled shear wall prefabricated units bracing frame is provided.
In order to realize above-mentioned utility model object, the utility model provides following technical scheme:
A kind of assembled shear wall prefabricated units bracing frame, comprises lower steel pipe 3, adjuster 4 and upper steel pipe 5;
Described lower steel pipe 3 one end are useful on fixing setting, and the other end is near having screw thread in end outer surface, and in steel tube screw thread section, have one along steel shaft to mounting hole, described mounting hole penetrates steel pipe tube wall on one side;
Described upper steel pipe 5 external diameters are less than the internal diameter of lower steel pipe 3, upper steel pipe is along being provided with several circular holes on the external surface up of bottom, described circular hole is disposed axially on straight line along upper steel pipe, and insert in lower steel pipe upper steel pipe lower end, and the upper end of upper steel pipe is useful on fixing setting;
Described adjuster 4 comprises and regulates screw thread 41,44, is arranged on the adjusting handle 42,45 that regulates on screw thread, also comprises bending latch 43, described adjusting screw thread is arranged in lower steel tube screw thread section, regulates the inside diameter surface of screw thread to have the internal thread coordinating with lower steel tube screw thread section; Described bending latch is arranged between two adjusting screw threads, and bending latch can insert in the circular hole on steel pipe or therefrom extract.
The mounting hole of described lower steel pipe upper end be shorter in length than thread segment length, width is greater than the Circularhole diameter that steel tube place opens, the length of described thread segment is greater than axial length and Circularhole diameter sum of upper steel pipe of two adjusting screw threads.
Lower steel pipe, upper steel pipe are radially to offer a through hole along steel pipe for fixing setting, and the fixing journal stirrup 2,6 passing on through hole and iron chair 1,7 by steady pin is fixed, and iron chair is fixed respectively at ground and shear wall by bolt.
On described iron chair, have bolt hole, iron chair is fixed by the bolt through bolt hole and shear wall and ground.
On described lower steel pipe, the thickness of steel pipe of end of thread part is greater than all the other wall thickness of lower steel pipe.
Described bending latch 43 is the round steel bar of a bending, and the diameter of this round steel bar is less than the Circularhole diameter of opening on steel pipe 5.
First adjuster is arranged in lower steel tube screw thread section, upper steel pipe inserts in lower steel pipe, the insertion depth of steel pipe in coarse adjustment, rotating steel tube makes the mounting hole of lower steel pipe and the circular hole of upper steel pipe on same straight line, and can see circular hole by mounting hole, then the fixed end of lower steel pipe, upper steel pipe is fixed on iron chair; Adjust two and regulate the position of screw threads, make at least to see between two adjusting screw threads a complete circular hole; Circular hole is inserted in bending latch one end, and bending bolt rod respectively with regulate screw thread 41,44 EDGE CONTACT, according to shear wall verticality situation, hold two adjusting handle rotations, regulate screw thread to move up and down along lower steel shaft, drive bending latch to move, and then the degree of depth of the lower steel pipe of steel pipe insertion is changed, regulate the verticality of shear wall.
As preferably, described mounting hole be shorter in length than thread segment length, make steel tube head portion leave one section of not perforate, ensure the rigidity of steel pipe; The width of mounting hole is greater than the Circularhole diameter that steel tube place opens in addition, when steel pipe supports the use under upper steel pipe inserts, can ensure that bending latch inserts circular hole and do not disturbed by mounting hole.
As preferably, on described adjusting screw thread 41,44 outer walls, be along the circumferential direction provided with boss and hanger, in the time that the circular hole on upper steel pipe is inserted in bending latch 43 one end, certain part on bending latch can contact with boss, hanger or screw thread circumferential edges on described adjusting screw thread 41,44, play and support fixing effect, can maintain the distance between two adjusting screw threads.
As preferably, when upper steel pipe circular hole is inserted in described bending latch 43 one end, the other end contacts, pushes against with adjusting screw thread boss, both hands are held two adjusting handles and are rotated towards a direction, will move up and down along steel shaft with the adjusting screw thread of threaded engagement on lower steel pipe, because the effect of bending latch drives upper steel pipe also and then mobile, can control the length of steel pipe, and then the verticality of adjusting shear wall, simple and quick.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1. an assembled shear wall prefabricated units bracing frame, simple in structure, easy to operate, can easily realize the effective adjusting to shear wall verticality;
2. an assembled shear wall prefabricated units bracing frame, sound construction, component are few, reduce because little component are lost the trouble of bringing, and upper steel pipe inserts lower steel pipe part and fits tightly, and transmits load by whole steel pipe, can ensure that this structure is steady in a long-term effective.
Brief description of the drawings:
Fig. 1 is the utility model embodiment 1 outer wall body support frame structure schematic diagram.
Fig. 2 is the utility model embodiment 2 interior wall wall support shelf structure schematic diagrames.
Fig. 3 is the structural representation of the adjuster of the assembled shear wall prefabricated units of the utility model bracing frame.
1, under 7-iron chair, 2, the fixing journal stirrup of 6-, 3-, steel pipe, 4-adjuster, the upper steel pipe of 5-, 41,44-regulate screw thread, 42,45-to regulate handle, the bending latch of 43-.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
embodiment 1
As shown in Figure 1, for the bracing frame of assembled shear wall prefabricated units outer wall body, comprise lower steel pipe 3, adjuster 4 and upper steel pipe 5;
As shown in Figure 1, the length of lower steel pipe is 2m, and lower steel pipe 3 one end are fixed on iron chair 1, and the other end is near having screw thread on outer end diameter surface, and in steel tube screw thread section, offer one along steel shaft to mounting hole, described mounting hole penetrates steel pipe tube wall on one side;
As shown in Figure 1, the length of upper steel pipe is 1.8m, upper steel pipe 5 external diameters are less than the internal diameter of lower steel pipe 3, the bottom of upper steel pipe external diameter surface equal intervals up arranges 8 and penetrates the circular hole that the diameter of thickness of steel pipe is 15mm on one side, circular hole spacing is made as 100mm herein, described circular hole is disposed axially on straight line along upper steel pipe, and insert in lower steel pipe upper steel pipe lower end, and the upper end of upper steel pipe is fixed on iron chair 7;
As shown in Figure 1, adjuster 4 comprises the adjusting screw thread 41,44 that is arranged on lower steel pipe 3 top thread segment external diameters, through the bending latch 43 that regulates the adjusting handle 42,45 in the hanger hole on screw thread, upper steel pipe circular hole through two adjusting screw threads, on described adjusting screw thread 41,44 outer walls, be along the circumferential direction provided with boss and hanger, regulate on screw thread internal diameter, have with lower steel pipe 3 on the supporting screw thread of screw thread.
As shown in Figure 1, the mounting hole of lower steel pipe upper end be shorter in length than thread segment length, width is greater than the Circularhole diameter that steel tube place opens, the length of described thread segment is greater than axial length and Circularhole diameter sum of upper steel pipe of two adjusting screw threads.
As shown in Figure 1, be respectively equipped with a pair of fixing journal stirrup 2,6 on described iron chair 1,7, the fixed end of lower steel pipe, upper steel pipe radially turns to have fixing hole, steel pipe to be placed on to pass fixing hole by steady pin between fixing journal stirrup and is fixed on iron chair.
As shown in Figure 1, have the bolt hole of M20 on described iron chair, iron chair is fixed by the M20 bolt through bolt hole and shear wall and ground.
As shown in Figure 1, the thickness of steel pipe of opening threaded portion on lower steel pipe is greater than all the other wall thickness of lower steel pipe.
As shown in Figure 1, described bending latch 43 is a round steel bar, and the diameter of this round steel bar is less than the Circularhole diameter of opening on steel pipe 5.
First adjuster is arranged in lower steel tube screw thread section, upper steel pipe inserts in lower steel pipe, the insertion depth of steel pipe in coarse adjustment, rotating steel tube makes the mounting hole of lower steel pipe and the circular hole of upper steel pipe on same straight line, and can see circular hole by mounting hole, then the fixed end of lower steel pipe, upper steel pipe is fixed on iron chair; Adjust two and regulate the position of screw threads, make at least to see between two adjusting screw threads a complete circular hole; Circular hole is inserted in bending latch one end, and bending bolt rod respectively with regulate screw thread 41,44 EDGE CONTACT, according to shear wall verticality situation, hold two adjusting handle rotations, regulate screw thread to move up and down along lower steel shaft, drive bending latch to move, and then the degree of depth of the lower steel pipe of steel pipe insertion is changed, regulate the verticality of shear wall.
embodiment 2
As shown in Figure 2, for the bracing frame of assembled shear wall prefabricated units outer wall body, comprise lower steel pipe 3, adjuster 4 and upper steel pipe 5;
As shown in Figure 2, assembled shear wall prefabricated units interior wall bracing frame is classified in this enforcement as, formed by two bracing frames, and with the angled bracing frame 1 in ground, the bracing frame 2 of another and ground level.
Bracing frame 1 as shown in Figure 2, the length of lower steel pipe is 2m, and lower steel pipe 3 one end are fixed on iron chair 1, and the other end is near having screw thread on outer end diameter surface, and in steel tube screw thread section, offer one along steel shaft to mounting hole, described mounting hole penetrates steel pipe tube wall on one side;
Bracing frame 1 as shown in Figure 2, the length of upper steel pipe is 1.8m, upper steel pipe 5 external diameters are less than the internal diameter of lower steel pipe 3, the bottom of upper steel pipe external diameter surface equal intervals up arranges 8 and penetrates the circular hole that the diameter of thickness of steel pipe is 15mm on one side, circular hole spacing is made as 100mm herein, described circular hole is disposed axially on straight line along upper steel pipe, and insert in lower steel pipe upper steel pipe lower end, and the upper end of upper steel pipe is fixed on iron chair 7;
Bracing frame 1 as shown in Figure 2, adjuster 4 comprises the adjusting screw thread 41,44 that is arranged on lower steel pipe 3 top thread segment external diameters, through the bending latch 43 that regulates the adjusting handle 42,45 in the hanger hole on screw thread, upper steel pipe circular hole through two adjusting screw threads, on described adjusting screw thread 41,44 outer walls, be along the circumferential direction provided with boss and hanger, regulate on screw thread internal diameter, have with lower steel pipe 3 on the supporting screw thread of screw thread.
Bracing frame 1 as shown in Figure 2, the mounting hole of lower steel pipe upper end be shorter in length than thread segment length, width is greater than the Circularhole diameter that steel tube place opens, the length of described thread segment is greater than axial length and Circularhole diameter sum of upper steel pipe of two adjusting screw threads.
Bracing frame 1 as shown in Figure 2, is respectively equipped with a pair of fixing journal stirrup 2,6 on described iron chair 1,7, the fixed end of lower steel pipe, upper steel pipe radially turns to have fixing hole, steel pipe to be placed on to pass fixing hole by steady pin between fixing journal stirrup and is fixed on iron chair.
Bracing frame 1 as shown in Figure 2, has the bolt hole of M20 on described iron chair, iron chair is fixed by the M20 bolt through bolt hole and shear wall and ground.
Bracing frame 1 as shown in Figure 2, the thickness of steel pipe of opening threaded portion on lower steel pipe is greater than all the other wall thickness of lower steel pipe.
Bracing frame 1 as shown in Figure 2, described bending latch 43 is a round steel bar, the diameter of this round steel bar is less than the Circularhole diameter of opening on steel pipe 5.
Bracing frame 2 as shown in Figure 2, according to on-the-spot actual needs, definite lower steel pipe 3 needing and the length of upper steel pipe 5, or get the size identical with bracing frame 1 steel pipe, in adjusting, the length of the lower lengths of steel pipes of steel pipe insertion reaches the object of adjusting.
First adjuster is arranged in lower steel tube screw thread section, upper steel pipe inserts in lower steel pipe, the insertion depth of steel pipe in coarse adjustment, rotating steel tube makes the mounting hole of lower steel pipe and the circular hole of upper steel pipe on same straight line, and can see circular hole by mounting hole, then the fixed end of lower steel pipe, upper steel pipe is fixed on iron chair; Adjust two and regulate the position of screw threads, make at least to see between two adjusting screw threads a complete circular hole; Circular hole is inserted in bending latch one end, and bending bolt rod respectively with regulate screw thread 41,44 EDGE CONTACT, according to shear wall verticality situation, hold two adjusting handle rotations, regulate screw thread to move up and down along lower steel shaft, drive bending latch to move, and then the degree of depth of the lower steel pipe of steel pipe insertion is changed, regulate the verticality of shear wall.
As shown in Figure 2, be provided with the shearing wall support structure of two bracing frames, shear wall is simultaneously supported up and down, is more conducive to the stable of shear wall.
Disclosed all features in this manual, or step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. an assembled shear wall prefabricated units bracing frame, comprises lower steel pipe (3), adjuster (4) and upper steel pipe (5);
Described lower steel pipe (3) one end is useful on fixing setting, and the other end is near having screw thread in end outer surface, and in steel tube screw thread section, have one along steel shaft to mounting hole, described mounting hole penetrates steel pipe tube wall on one side;
Described upper steel pipe (5) external diameter is less than the internal diameter of lower steel pipe (3), upper steel pipe is along being provided with several circular holes on the external surface up of bottom, described circular hole is disposed axially on straight line along upper steel pipe, and insert in lower steel pipe upper steel pipe lower end, and the upper end of upper steel pipe is useful on fixing setting;
Described adjuster (4) comprises adjusting screw thread (41), (44), be arranged on the adjusting handle (42) that regulates on screw thread, (45), also comprise bending latch (43), described adjusting screw thread is arranged in lower steel tube screw thread section, regulates the inside diameter surface of screw thread to have the internal thread coordinating with lower steel tube screw thread section; Described bending latch is arranged between two adjusting screw threads, and bending latch can insert in the circular hole of steel pipe or therefrom extract.
2. assembled shear wall prefabricated units bracing frame according to claim 1, the length that it is characterized in that the mounting hole of described lower steel pipe upper end is less than thread segment length, width is greater than the Circularhole diameter that steel tube place opens, and the length of described thread segment is greater than axial length and Circularhole diameter sum of upper steel pipe of two adjusting screw threads.
3. assembled shear wall prefabricated units bracing frame according to claim 1, it is characterized in that lower steel pipe, upper steel pipe are radially to offer a through hole along steel pipe for fixing setting, pass fixing journal stirrup (2), (6) on through hole and iron chair (1), (7) by steady pin fixing, iron chair is fixed with ground and shear wall respectively by bolt.
4. assembled shear wall prefabricated units bracing frame according to claim 1, is characterized in that the thickness of steel pipe of described lower steel tube screw thread section part is greater than all the other wall thickness of lower steel pipe.
5. assembled shear wall prefabricated units bracing frame according to claim 1, is characterized in that described bending latch (43) is the round steel bar of a bending, and the diameter of this round steel bar is less than the Circularhole diameter of opening on steel pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246199.1U CN203808555U (en) | 2014-05-15 | 2014-05-15 | Assembled support for shear wall prefabricated members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246199.1U CN203808555U (en) | 2014-05-15 | 2014-05-15 | Assembled support for shear wall prefabricated members |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203808555U true CN203808555U (en) | 2014-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420246199.1U Expired - Lifetime CN203808555U (en) | 2014-05-15 | 2014-05-15 | Assembled support for shear wall prefabricated members |
Country Status (1)
| Country | Link |
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| CN (1) | CN203808555U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481163A (en) * | 2014-11-20 | 2015-04-01 | 中冶天工上海十三冶建设有限公司 | L beam construction device and method for building structure reinforcement |
| CN105019670A (en) * | 2015-04-20 | 2015-11-04 | 中国十七冶集团有限公司 | Position-adjusting device for precast concrete wall panel |
| CN105587128A (en) * | 2016-02-22 | 2016-05-18 | 北京六建集团有限责任公司 | Special fixture for mounting wallboard with heat insulation structure and mounting method for first-layer wallboard with heat insulation structure |
| CN106930323A (en) * | 2017-05-12 | 2017-07-07 | 中冶建工集团有限公司 | Pipe gallery prefabricated panel is from load supporting structure |
| CN108612231A (en) * | 2018-06-20 | 2018-10-02 | 温州职业技术学院 | A kind of building assembly wall mounting structure |
| CN109667436A (en) * | 2018-12-31 | 2019-04-23 | 宁波二十冶建设有限公司 | A kind of Multifunctional mobile tripod and application method |
| TWI786842B (en) * | 2021-09-22 | 2022-12-11 | 彭光聰 | Wall lateral support reinforcement device |
-
2014
- 2014-05-15 CN CN201420246199.1U patent/CN203808555U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481163A (en) * | 2014-11-20 | 2015-04-01 | 中冶天工上海十三冶建设有限公司 | L beam construction device and method for building structure reinforcement |
| CN104481163B (en) * | 2014-11-20 | 2016-03-30 | 中冶天工上海十三冶建设有限公司 | A kind of L beam construction equipment for building structure reinforcing and method |
| CN105019670A (en) * | 2015-04-20 | 2015-11-04 | 中国十七冶集团有限公司 | Position-adjusting device for precast concrete wall panel |
| CN105587128A (en) * | 2016-02-22 | 2016-05-18 | 北京六建集团有限责任公司 | Special fixture for mounting wallboard with heat insulation structure and mounting method for first-layer wallboard with heat insulation structure |
| CN106930323A (en) * | 2017-05-12 | 2017-07-07 | 中冶建工集团有限公司 | Pipe gallery prefabricated panel is from load supporting structure |
| CN108612231A (en) * | 2018-06-20 | 2018-10-02 | 温州职业技术学院 | A kind of building assembly wall mounting structure |
| CN109667436A (en) * | 2018-12-31 | 2019-04-23 | 宁波二十冶建设有限公司 | A kind of Multifunctional mobile tripod and application method |
| TWI786842B (en) * | 2021-09-22 | 2022-12-11 | 彭光聰 | Wall lateral support reinforcement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160106 Address after: Jinniu District Kam Tong Road Chengdu city Sichuan province 610031 No. 16 Patentee after: CHINA RAILWAY NO.2 BUREAU ENGINEERING Co.,Ltd. Address before: 610041, No. nine, No. 156, building B, high building, Xing Xing Road, Chengdu hi tech Zone, Sichuan Patentee before: CHINA RAILWAY ERJU Co.,Ltd. Patentee before: CHINA RAILWAY ERJU 4TH ENGINEERING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Patentee after: CHINA RAILWAY NO.2 ENGINEERING GROUP Co.,Ltd. Address before: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Patentee before: CHINA RAILWAY NO.2 BUREAU ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190417 Address after: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Co-patentee after: CHINA RAILWAY ERJU 4TH ENGINEERING Co.,Ltd. Patentee after: CHINA RAILWAY NO.2 ENGINEERING GROUP Co.,Ltd. Address before: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Patentee before: CHINA RAILWAY NO.2 ENGINEERING GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |