CN203007815U - Casing pipe type connection part for assembly rectangular steel pipe truss - Google Patents
Casing pipe type connection part for assembly rectangular steel pipe truss Download PDFInfo
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- CN203007815U CN203007815U CN 201220734699 CN201220734699U CN203007815U CN 203007815 U CN203007815 U CN 203007815U CN 201220734699 CN201220734699 CN 201220734699 CN 201220734699 U CN201220734699 U CN 201220734699U CN 203007815 U CN203007815 U CN 203007815U
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Abstract
The utility model discloses a casing pipe type connection part for an assembly rectangular steel pipe truss. The casing pipe type connection part for the assembly rectangular steel pipe truss comprises an H-shaped connection part connected between a first truss unit and a second truss unit, a first detachable connection part which tightly connects the first truss unit with the H-shaped connection part and a second detachable connection part which tightly connects the second truss unit with the H-shaped connection part. The H-shaped connection part comprises an upper casing pipe, a lower casing pipe arranged under the upper casing pipe and a lengthwise connection rod which is connected in the middle of the upper casing pipe and the lower casing pipe. The upper casing pipe, the lower casing pipe and the vertical connection rod are arranged in the same plane. The upper casing pipe and the lower casing pipe are parallelly arranged. The lengthwise connection rod is vertically arranged with the upper casing pipe and the lower casing pipe. The casing pipe type connection part for the assembly rectangular steel pipe truss is simple in structure, reasonable in design, simple and convenient to construct, reliable in connection, good in stressing performance and capable of effectively solving the problems that an existing steel pipe truss connection component is insufficient in bearing capacity, low in rigidity, complicated in construction procedure and the like.
Description
Technical field
The utility model relates to a kind of connector, especially relates to a kind of assembling rectangular steel pipe girders bushing type connector.
Background technology
Mountable steel bridge be a kind of decomposable, can fast erecting and the Uniformed Bridge that is mainly used in rushing to repair.At present, the connecting method of steel pipe truss comprises that mainly sleeve pipe connects, the channel-section steel connection is connected three kinds of connected modes with flange.But in actual use procedure, all there are following two problems in various degree in the connecting elements that adopts in above-mentioned three kinds of erection methods: the first, Lack of support, and rigidity is lower, thereby result of use is relatively poor; The second, speed of application is slower, can not satisfy the fast erecting requirement of steel pipe truss in mountable steel bridge.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of assembling rectangular steel pipe girders bushing type connector is provided, it is simple in structure, reasonable in design, easy construction and connect reliable, stress performance is good, can effectively solve the problems such as the supporting capacity that existing steel pipe truss connecting elements exists is not enough, rigidity is low, construction sequence is complicated.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of assembling rectangular steel pipe girders bushing type connector is characterized in that: comprise the I-shaped connector that is connected between truss element one and truss element two, the removable connector one that described truss element one and described I-shaped connector are fastenedly connected and the removable connector two that described truss element two and described I-shaped connector are fastenedly connected; Described I-shaped connector comprises sleeve pipe, be laid in the setting of casing under sleeve pipe and be connected in sleeve pipe and setting of casing between the longitudinal rod at middle part, described upper sleeve pipe, setting of casing and vertical link are laid at grade, described upper sleeve pipe is parallel laying with setting of casing, and longitudinal rod all is vertical laying with upper sleeve pipe with setting of casing;
Described truss element one is positioned at the left side of described truss element two; Described truss element one comprises upper chord one, at the lower chord one under upper chord one and the many web members one that are connected between upper chord one and lower chord one, described upper chord one, lower chord one and many described web members one are laid on same plane, and upper chord one is parallel laying with lower chord one, and described upper chord one and lower chord one are rectangular steel pipe; Described truss element two comprises upper chord two, at the lower chord two under upper chord two and the many web members two that are connected between upper chord two and lower chord two, described upper chord two, lower chord two and many described web members two are laid on same plane, and upper chord two is parallel laying with lower chord two, and described upper chord two and lower chord two are rectangular steel pipe; Spacing between spacing between described upper chord one and lower chord one and upper chord two and lower chord two is d, the length L=d of described longitudinal rod;
described upper chord one from left to right coaxial plug-in mounting to enter the left end of upper sleeve pipe inboard, lower chord one from left to right coaxial plug-in mounting to enter cased left end inboard, described removable connector one comprises plug-in mounting is entered connecting pin one that upper chord one and upper sleeve pipe in upper sleeve pipe be fastenedly connected and plug-in mounting is entered the connecting pin two that lower chord one and setting of casing in setting of casing are fastenedly connected, the right-hand member of described upper chord one and the left end of upper sleeve pipe have the pin-and-hole one of installing for described connecting pin one, and the right-hand member of lower chord one and cased left end have the pin-and-hole two of installing for described connecting pin two, described upper chord two from right to left coaxial plug-in mounting to enter the right-hand member of upper sleeve pipe inboard, lower chord two from right to left coaxial plug-in mounting to enter cased right-hand member inboard, described removable connector two comprises plug-in mounting is entered connecting pin three that upper chord two and upper sleeve pipe in upper sleeve pipe be fastenedly connected and plug-in mounting is entered the connecting pin four that lower chord two and setting of casing in setting of casing are fastenedly connected, the left end of described upper chord two and the right-hand member of upper sleeve pipe have the pin-and-hole three of installing for described connecting pin three, and the left end of lower chord two and cased right-hand member have the pin-and-hole four of installing for described connecting pin four.
Above-mentioned assembling rectangular steel pipe girders bushing type connector, it is characterized in that: described truss element one also comprises a plurality of gusset plates one of laying from left to right, many described web members one are divided into a plurality of web member groups one from left to right, and each described web member group one includes many described web members one that are connected to one by a gusset plate one, and the gusset plate one that is positioned at the rightmost side in a plurality of gusset plates one is fastenedly connected by temporary fastener one and vertical link; Described truss element two also comprises a plurality of gusset plates two of laying from left to right, many described web members two are divided into a plurality of web member groups two from left to right, and each described web member group two includes many described web members two that are connected to one by a gusset plate two, and the gusset plate two that is positioned at the leftmost side in a plurality of gusset plates two is fastenedly connected by temporary fastener two and vertical link.
Above-mentioned assembling rectangular steel pipe girders bushing type connector is characterized in that: described upper sleeve pipe, setting of casing and longitudinal rod are rectangular steel pipe.
Above-mentioned assembling rectangular steel pipe girders bushing type connector is characterized in that: described temporary fastener one is fastening bolt one, and the right side of gusset plate one has the bolt mounting holes one of installing for described fastening bolt one; Described temporary fastener two is fastening bolt two, and the left side of gusset plate two has the bolt mounting holes two of installing for described fastening bolt two.
Above-mentioned assembling rectangular steel pipe girders bushing type connector is characterized in that: the quantity of described fastening bolt one is a plurality of, and the quantity of described bolt mounting holes one is identical with the quantity of described fastening bolt one; The quantity of described fastening bolt two is a plurality of, and the quantity of described bolt mounting holes two is identical with the quantity of described fastening bolt two.
Above-mentioned assembling rectangular steel pipe girders bushing type connector is characterized in that: all be fixed with welding manner between described longitudinal rod and upper sleeve pipe and setting of casing and be connected.
Above-mentioned assembling rectangular steel pipe girders bushing type connector is characterized in that: the quantity of described fastening bolt one is 3～5, and the quantity of described fastening bolt two is 3～5.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design and easy construction, process velocity is fast.
2, connect reliable, easy accessibility, and labour intensity is low, dismounting speed is fast, can satisfy the construction requirement of mountable steel bridge steel pipe truss fast erecting, easy accessibility.
The problems such as 3, result of use is good, and after connecting, the stress performance of institute's formation truss is good, and the supporting capacity that can effectively solve existing steel pipe truss connecting elements existence is not enough, rigidity is low, construction sequence is complicated.
4, increase longitudinal rod between two sleeve pipes of up and down, the longitudinal rod of setting up simultaneously is connected as standby connection with the gusset plate on the truss element web member, make connection more reliable, stable, and be conducive to the fixed sleeving position, strengthened the operability of steel pipe truss assembling construction.During actual assembly unit, two rectangular steel pipe chord members that only will splice stretch in sleeve pipe and with connecting pin from the two ends, left and right respectively and are fixed, and gusset plate and the longitudinal rod of two truss element web member middle part settings need splicing simultaneously are connected and fixed by bolt.Adopt the utility model to carry out assembly unit constantly to the truss element of assembling rectangular steel pipe, only need the utility model is arranged between two rectangular steel pipe girders unit and is fixed with connecting pin get final product, simultaneously being connected as standby connection between the gusset plate in the middle part of longitudinal rod and truss element web member.
In sum, the utility model is simple in structure, reasonable in design, easy construction and connect reliable, stress performance is good, can effectively solve the problems such as the supporting capacity that existing steel pipe truss connecting elements exists is not enough, rigidity is low, construction sequence is complicated.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is assembling schematic diagram of the present utility model.
Description of reference numerals:
1-upper sleeve pipe; 2-setting of casing; 3-longitudinal rod;
4-1-upper chord one; 4-2-lower chord one; 4-3-web member one;
4-4-pin-and-hole one; 4-5-pin-and-hole two; 4-6-gusset plate one;
4-7-bolt mounting holes one; 5-1-upper chord two; 5-2-lower chord two;
5-3-web member two; 5-4-pin-and-hole three; 5-5-pin-and-hole four;
5-6-gusset plate two; 5-7-bolt mounting holes two; 7-cylindrical connecting pin.
The specific embodiment
As shown in Figure 1, the utility model comprise the I-shaped connector that is connected between truss element one and truss element two, the removable connector one that described truss element one and described I-shaped connector are fastenedly connected and the removable connector two that described truss element two and described I-shaped connector are fastenedly connected.Described I-shaped connector comprises sleeve pipe 1, be laid in the setting of casing 2 under sleeve pipe 1 and be connected in sleeve pipe 1 and setting of casing 2 between the longitudinal rod 3 at middle part, described upper sleeve pipe 1, setting of casing 2 and vertical link 3 are laid at grade, described upper sleeve pipe 1 is parallel laying with setting of casing 2, and longitudinal rod 3 all is vertical laying with upper sleeve pipe 1 with setting of casing 2.
Described truss element one is positioned at the left side of described truss element two.Described truss element one comprises upper chord one 4-1, is connected in web member one 4-3 between upper chord one 4-1 and lower chord one 4-2 at lower chord one 4-2 under upper chord one 4-1 and Duo Gen, described web member one 4-3 of described upper chord one 4-1, lower chord one 4-2 and Duo Gen is laid on same plane, and upper chord one 4-1 is parallel laying with lower chord one 4-2, and described upper chord one 4-1 and lower chord one 4-2 are rectangular steel pipe.Described truss element two comprises upper chord two 5-1, is connected in web member two 5-3 between upper chord two 5-1 and lower chord two 5-2 at lower chord two 5-2 under upper chord two 5-1 and Duo Gen, described web member two 5-3 of described upper chord two 5-1, lower chord two 5-2 and Duo Gen are laid on same plane, and upper chord two 5-1 are parallel laying with lower chord two 5-2, and described upper chord two 5-1 and lower chord two 5-2 are rectangular steel pipe.Spacing between spacing between described upper chord one 4-1 and lower chord one 4-2 and upper chord two 5-1 and lower chord two 5-2 is d, the length L=d of described longitudinal rod 3.
described upper chord one 4-1 from left to right coaxial plug-in mounting to enter the left end of upper sleeve pipe 1 inboard, lower chord one 4-2 from left to right coaxial plug-in mounting to enter the left end of setting of casing 2 inboard, described removable connector one comprises plug-in mounting is entered connecting pin one that upper chord one 4-1 and upper sleeve pipe 1 in upper sleeve pipe 1 be fastenedly connected and plug-in mounting is entered the connecting pin two that interior lower chord one 4-2 of setting of casing 2 and setting of casing 2 are fastenedly connected, the right-hand member of described upper chord one 4-1 and the left end of upper sleeve pipe 1 have pin-and-hole one 4-4 that installs for described connecting pin one, and the right-hand member of lower chord one 4-2 and the left end of setting of casing 2 have pin-and-hole two 4-5 that install for described connecting pin two.described upper chord two 5-1 from right to left coaxial plug-in mounting to enter the right-hand member of upper sleeve pipe 1 inboard, lower chord two 5-2 from right to left coaxial plug-in mounting to enter the right-hand member of setting of casing 2 inboard, described removable connector two comprises plug-in mounting is entered connecting pin three that upper chord two 5-1 and upper sleeve pipe 1 in upper sleeve pipe 1 be fastenedly connected and plug-in mounting is entered the connecting pin four that interior lower chord two 5-2 of setting of casing 2 and setting of casing 2 are fastenedly connected, the left end of described upper chord two 5-1 and the right-hand member of upper sleeve pipe 1 have pin-and-hole three 5-4 that install for described connecting pin three, and the left end of lower chord two 5-2 and the right-hand member of setting of casing 2 have pin-and-hole four 5-5 that install for described connecting pin four.
In the present embodiment, described truss element one also comprises a plurality of gusset plates one 4-6 that lays from left to right, many described web member one 4-3 are divided into a plurality of web member groups one from left to right, and each described web member group one includes many described web member one 4-3 that are connected to one by gusset plate one 4-6, and gusset plate one 4-6 that is positioned at the rightmost side in a plurality of gusset plate one 4-6 is fastenedly connected by temporary fastener one and vertical link 3.Described truss element two also comprises a plurality of gusset plates two 5-6 that lay from left to right, many described web member two 5-3 are divided into a plurality of web member groups two from left to right, and each described web member group two includes many described web member two 5-3 that are connected to one by gusset plate two 5-6, and gusset plate two 5-6 that are positioned at the leftmost side in a plurality of gusset plate two 5-6 are fastenedly connected by temporary fastener two and vertical link 3.
Actually add man-hour, described upper sleeve pipe 1, setting of casing 2 and longitudinal rod 3 are rectangular steel pipe.
In the present embodiment, described temporary fastener one is fastening bolt one, and the right side of gusset plate one 4-6 has bolt mounting holes one 4-7 that installs for described fastening bolt one.Described temporary fastener two is fastening bolt two, and the left side of gusset plate two 5-6 has bolt mounting holes two 5-7 that install for described fastening bolt two.
During actual the use, the quantity of described fastening bolt one is a plurality of, and the quantity of described bolt mounting holes one 4-7 is identical with the quantity of described fastening bolt one.The quantity of described fastening bolt two is a plurality of, and the quantity of described bolt mounting holes two 5-7 is identical with the quantity of described fastening bolt two.
The quantity of described fastening bolt one is 3～5, and the quantity of described fastening bolt two is 3～5.In the present embodiment, the quantity of described fastening bolt one and described fastening bolt two is three.During actual the use, can be according to specific needs, the quantity of described fastening bolt one and described fastening bolt two is adjusted accordingly.
In the present embodiment, all be fixed with welding manner between described longitudinal rod 3 and upper sleeve pipe 1 and setting of casing 2 and be connected.Described connecting pin one, connecting pin two, connecting pin three and connecting pin four be the cylindrical connecting pin 7 for being supported by network manganese-titanium steel all.
In actual building course, at first, according to the force request of institute's process and assemble formula rectangular steel pipe girders, and according to the force analysis method analysis of routine and calculate the required supporting capacity of each bushing type connector; And after the supporting capacity of each bushing type connector is determined, the more concrete size of determining the connecting pin that adopts, connecting pin two, connecting pin three and connecting pin four, and corresponding definite institute's employing fastening bolt one respectively and fastening bolt two size and quantity; Then, determine the length of longitudinal rod 3 according to the spacing between top-bottom chord in required assembly unit truss sections; At last, in conjunction with structure and the size of longitudinal rod 3, gusset plate one 4-6 that is positioned at the rightmost side and the structure that is positioned at gusset plate two 5-6 of the leftmost side are adjusted accordingly.
The above; it is only preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection domain of technical solutions of the utility model.
Claims (7)
1. assembling rectangular steel pipe girders bushing type connector is characterized in that: comprise the I-shaped connector that is connected between truss element one and truss element two, the removable connector one that described truss element one and described I-shaped connector are fastenedly connected and the removable connector two that described truss element two and described I-shaped connector are fastenedly connected; Described I-shaped connector comprises sleeve pipe (1), be laid in the setting of casing (2) under sleeve pipe (1) and be connected in sleeve pipe (1) and setting of casing (2) between the longitudinal rod (3) at middle part, described upper sleeve pipe (1), setting of casing (2) and vertical link (3) are laid at grade, described upper sleeve pipe (1) is parallel laying with setting of casing (2), and longitudinal rod (3) all is vertical laying with upper sleeve pipe (1) with setting of casing (2);
Described truss element one is positioned at the left side of described truss element two; Described truss element one comprises upper chord one (4-1), be positioned at lower chord one (4-2) and the many web members one (4-3) that are connected between upper chord one (4-1) and lower chord one (4-2) under upper chord one (4-1), described upper chord one (4-1), lower chord one (4-2) and many described web members one (4-3) are laid on same plane, and upper chord one (4-1) is parallel laying with lower chord one (4-2), and described upper chord one (4-1) and lower chord one (4-2) are rectangular steel pipe; Described truss element two comprises upper chord two (5-1), be positioned at lower chord two (5-2) and the many web members two (5-3) that are connected between upper chord two (5-1) and lower chord two (5-2) under upper chord two (5-1), described upper chord two (5-1), lower chord two (5-2) and many described web members two (5-3) are laid on same plane, and upper chord two (5-1) is parallel laying with lower chord two (5-2), and described upper chord two (5-1) and lower chord two (5-2) are rectangular steel pipe; Spacing between spacing between described upper chord one (4-1) and lower chord one (4-2) and upper chord two (5-1) and lower chord two (5-2) is d, the length L=d of described longitudinal rod (3);
described upper chord one (4-1) from left to right coaxial plug-in mounting to enter the left end of upper sleeve pipe (1) inboard, lower chord one (4-2) from left to right coaxial plug-in mounting to enter the left end of setting of casing (2) inboard, described removable connector one comprises plug-in mounting is entered connecting pin one that upper chord one (4-1) and upper sleeve pipe (1) in upper sleeve pipe (1) be fastenedly connected and plug-in mounting is entered the connecting pin two that lower chord one (4-2) and setting of casing (2) in setting of casing (2) are fastenedly connected, the left end of the right-hand member of described upper chord one (4-1) and upper sleeve pipe (1) has the pin-and-hole one (4-4) of installing for described connecting pin one, and the left end of the right-hand member of lower chord one (4-2) and setting of casing (2) has the pin-and-hole two (4-5) of installing for described connecting pin two, described upper chord two (5-1) from right to left coaxial plug-in mounting to enter the right-hand member of upper sleeve pipe (1) inboard, lower chord two (5-2) from right to left coaxial plug-in mounting to enter the right-hand member of setting of casing (2) inboard, described removable connector two comprises plug-in mounting is entered connecting pin three that upper chord two (5-1) and upper sleeve pipe (1) in upper sleeve pipe (1) be fastenedly connected and plug-in mounting is entered the connecting pin four that lower chord two (5-2) and setting of casing (2) in setting of casing (2) are fastenedly connected, the right-hand member of the left end of described upper chord two (5-1) and upper sleeve pipe (1) has the pin-and-hole three (5-4) of installing for described connecting pin three, and the right-hand member of the left end of lower chord two (5-2) and setting of casing (2) has the pin-and-hole four (5-5) of installing for described connecting pin four.
2. according to assembling rectangular steel pipe girders bushing type connector claimed in claim 1, it is characterized in that: described truss element one also comprises a plurality of gusset plates one (4-6) of laying from left to right, many described web members one (4-3) are divided into a plurality of web member groups one from left to right, and each described web member group one includes the many described web members one (4-3) that are connected to one by a gusset plate one (4-6), and the gusset plate one (4-6) that is positioned at the rightmost side in a plurality of gusset plates one (4-6) is fastenedly connected by temporary fastener one and vertical link (3); Described truss element two also comprises a plurality of gusset plates two (5-6) of laying from left to right, many described web members two (5-3) are divided into a plurality of web member groups two from left to right, and each described web member group two includes the many described web members two (5-3) that are connected to one by a gusset plate two (5-6), and the gusset plate two (5-6) that is positioned at the leftmost side in a plurality of gusset plates two (5-6) is fastenedly connected by temporary fastener two and vertical link (3).
3. according to the described assembling rectangular steel pipe girders bushing type connector of claim 1 or 2, it is characterized in that: described upper sleeve pipe (1), setting of casing (2) and longitudinal rod (3) are rectangular steel pipe.
4. according to assembling rectangular steel pipe girders bushing type connector claimed in claim 2, it is characterized in that: described temporary fastener one is fastening bolt one, and the right side of gusset plate one (4-6) has the bolt mounting holes one (4-7) of installing for described fastening bolt one; Described temporary fastener two is fastening bolt two, and the left side of gusset plate two (5-6) has the bolt mounting holes two (5-7) of installing for described fastening bolt two.
5. according to assembling rectangular steel pipe girders bushing type connector claimed in claim 4, it is characterized in that: the quantity of described fastening bolt one is a plurality of, and the quantity of described bolt mounting holes one (4-7) is identical with the quantity of described fastening bolt one; The quantity of described fastening bolt two is a plurality of, and the quantity of described bolt mounting holes two (5-7) is identical with the quantity of described fastening bolt two.
6. according to the described assembling rectangular steel pipe girders bushing type connector of claim 1 or 2, it is characterized in that: all be fixed with welding manner between described longitudinal rod (3) and upper sleeve pipe (1) and setting of casing (2) and be connected.
7. according to assembling rectangular steel pipe girders bushing type connector claimed in claim 5, it is characterized in that: the quantity of described fastening bolt one is 3～5, and the quantity of described fastening bolt two is 3～5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734699 CN203007815U (en) | 2012-12-27 | 2012-12-27 | Casing pipe type connection part for assembly rectangular steel pipe truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734699 CN203007815U (en) | 2012-12-27 | 2012-12-27 | Casing pipe type connection part for assembly rectangular steel pipe truss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203007815U true CN203007815U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220734699 Expired - Fee Related CN203007815U (en) | 2012-12-27 | 2012-12-27 | Casing pipe type connection part for assembly rectangular steel pipe truss |
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| Country | Link |
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| CN (1) | CN203007815U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088221A (en) * | 2014-07-31 | 2014-10-08 | 长安大学 | T-shaped plate girder segment prefabricating unit based on steel truss and combined bridge deck slab |
| CN104110098A (en) * | 2014-07-29 | 2014-10-22 | 中交一公局第四工程有限公司 | Prestressed concrete-filled steel tube truss piece and truss built by truss pieces |
| CN110804935A (en) * | 2019-09-26 | 2020-02-18 | 中国一冶集团有限公司 | Connecting piece, connecting structure and connecting method capable of adjusting horizontal folding direction of Bailey truss |
| CN112609953A (en) * | 2020-12-21 | 2021-04-06 | 中建科工集团有限公司 | A operation platform for managing truss |
-
2012
- 2012-12-27 CN CN 201220734699 patent/CN203007815U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110098A (en) * | 2014-07-29 | 2014-10-22 | 中交一公局第四工程有限公司 | Prestressed concrete-filled steel tube truss piece and truss built by truss pieces |
| CN104088221A (en) * | 2014-07-31 | 2014-10-08 | 长安大学 | T-shaped plate girder segment prefabricating unit based on steel truss and combined bridge deck slab |
| CN104088221B (en) * | 2014-07-31 | 2015-11-25 | 长安大学 | A kind of T-shaped plate girder precast segment unit based on steel truss and combined bridge deck |
| CN110804935A (en) * | 2019-09-26 | 2020-02-18 | 中国一冶集团有限公司 | Connecting piece, connecting structure and connecting method capable of adjusting horizontal folding direction of Bailey truss |
| CN112609953A (en) * | 2020-12-21 | 2021-04-06 | 中建科工集团有限公司 | A operation platform for managing truss |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20151227 |
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| EXPY | Termination of patent right or utility model |