CN209989702U - Novel bracket - Google Patents
Novel bracket Download PDFInfo
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- CN209989702U CN209989702U CN201920237926.0U CN201920237926U CN209989702U CN 209989702 U CN209989702 U CN 209989702U CN 201920237926 U CN201920237926 U CN 201920237926U CN 209989702 U CN209989702 U CN 209989702U
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Abstract
The utility model provides a novel bracket, which comprises a pier, a reinforcing column, a connecting reinforcing rib, a pre-buried rod, a pre-buried connecting rod, a first connecting seat, a detachable and adjustable inclined strut rod structure, a detachable and connected transverse rod structure, an adjustable supporting and fixing rod structure, a first transverse connecting rod, an H-shaped fixing channel steel, an inclined strut rod, a fixing strut rod, a bridge deck connecting rod and a bridge deck connecting seat, wherein the reinforcing column is poured at the middle position inside the pier; one end of the connecting reinforcing rib is welded on the left side and the right side of the reinforcing column respectively. The utility model is provided with the first oblique connecting pipe, the second oblique connecting pipe, the threaded rod and the threaded pipe, which is beneficial to disassembling the first oblique connecting pipe and the second oblique connecting pipe, and can be disassembled and built after convenient operation; the second transverse connecting rod, the connecting block, the U-shaped frame, the connecting plate and the connecting and fixing plate are arranged, so that the connecting and fixing work is facilitated, and the complex reduction of the working efficiency of the bracket structure is prevented.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction, especially, relate to a new form bracket.
Background
At present, three forms of full framing, steel pipe piles and brackets are mainly adopted during the construction of a 0# block of the bridge. The bracket is the only construction scheme for some bridges crossing rivers and canyons. At present, the existing brackets on the market are all triangular brackets. And profile steel welding or pin shaft connection is adopted. Existing carriages are relatively safe for large bridges, but such carriages are too bulky for small bridges. When the bracket is used, the heavy and large-batch use of sectional materials of the bracket restricts the application range of the bracket construction scheme.
However, the existing bracket also has the problems of inconvenient dismantling work, complicated structure, inconvenient use and inconvenient adjustment in the use process.
Therefore, it is necessary to invent a new type of bracket.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a new form bracket to there is inconvenient work of demolising in the current bracket of solution, and the complicated in-process inconvenient problem of adjusting of using of use of structure. A novel bracket comprises a pier, a reinforcing column, a connecting reinforcing rib, a pre-buried rod, a pre-buried connecting rod, a first connecting seat, a detachable and adjustable inclined strut structure, a detachable and connected transverse rod structure, an adjustable supporting and fixing rod structure, a first transverse connecting rod, an H-shaped fixing channel steel, an inclined supporting rod, a fixing supporting rod, a bridge deck connecting rod and a bridge deck connecting seat, wherein the reinforcing column is poured in the middle of the interior of the pier; one end of the connecting reinforcing rib is respectively welded at the left side and the right side of the reinforcing column; the embedded rods are poured on the left side and the right side of the bridge pier; the embedded connecting rods are sequentially welded between the embedded rods from left to right; the first connecting seats are respectively welded at the left end and the right end of the embedded rod; one end of the detachable adjusting inclined strut structure is respectively arranged at the left side and the right side of the first connecting seat arranged at the lower part; the other end of the detachable adjusting inclined strut structure is arranged at the lower end of the detachable connecting transverse rod structure; the left side and the right side of a first connecting seat are respectively arranged at the upper part of the detachable connecting transverse rod structure; the adjustable supporting fixed rod structure is arranged between the detachable adjusting inclined supporting rod structure and the detachable connecting transverse rod structure; the first transverse connecting rods are respectively bolted to the upper parts of the left side and the right side of the pier; the lower end of the H-shaped fixed channel steel is sequentially bolted to the upper end of the detachable connecting transverse rod structure from left to right; the upper end of the H-shaped fixed channel steel is sequentially bolted to the lower end of the first transverse connecting rod from left to right; the oblique supporting rods are sequentially welded at the upper end of the first transverse connecting rod from left to right; the fixed support rods are sequentially welded at the upper end of the first transverse connecting rod from left to right; the bridge deck connecting rod is connected to the lower end of the bridge deck connecting seat through bolts; the bridge deck connecting seats are poured at the upper ends of the piers; the detachable adjusting inclined stay bar structure comprises a first inclined connecting pipe, a second inclined connecting pipe, a threaded rod, a threaded pipe and a fixed through hole, wherein the threaded rod is respectively in threaded connection with the middle position inside the right end of the first inclined connecting pipe; the threaded rod is further in threaded connection with the middle position inside the left end of the second inclined connecting pipe; the threaded pipes are respectively in threaded connection with the outer walls of the left end and the right end of the threaded rod; the fixed through holes are respectively formed in the middle of the left side of the front surface of the first inclined connecting pipe; the fixing through hole is further formed in the middle of the right side of the front surface of the second inclined connecting pipe.
Preferably, the detachable connecting transverse rod structure comprises a second transverse connecting rod, a connecting block, a U-shaped frame, a connecting plate and a connecting fixing plate, and the connecting block is welded at the left end of the second transverse connecting rod; the U-shaped frame is welded at the lower end of the connecting block; the connecting plate is welded on the right side of the connecting fixing plate; the right end of the second transverse connecting rod is welded at the upper part of the left side of the connecting fixing plate.
Preferably, the adjustable supporting and fixing rod structure comprises a sleeve pipe, a first U-shaped seat, a puller bolt, an inclined supporting and separating rod, a second U-shaped seat and a second connecting seat, wherein the bolt of the first U-shaped seat is connected to the upper end of the sleeve pipe; the jacking bolt is in threaded connection with the middle position of the lower end of the sleeve pipe; the inclined supporting separation rod is respectively connected between the first U-shaped seat and the second U-shaped seat in a shaft mode; and the second U-shaped seat is connected to the lower end of the second connecting seat through a bolt.
Preferably, the fixed supporting rods are respectively arranged between the oblique supporting rods; the other ends of the connecting reinforcing ribs are respectively welded in the middle positions of the left side and the right side of the embedded connecting rod.
Preferably, two threaded rods are arranged; the threaded pipe is arranged between the first oblique connecting pipe and the second oblique connecting pipe.
Preferably, the left end of the first inclined connecting pipe is respectively bolted on the left side and the right side of the first connecting seat arranged at the lower part.
Preferably, the connecting blocks are respectively bolted on the left side and the right side of the first connecting seat arranged on the upper part.
Preferably, the right end of the second inclined connecting pipe is bolted to the lower part of the left side of the connecting fixing plate.
Preferably, the sleeve pipe is sleeved on the left side of the outer wall of the second oblique connecting pipe.
Preferably, the second connecting seat is connected to the left side of the lower end of the second transverse connecting rod through a bolt.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, first slant connecting pipe, second slant connecting pipe, the setting of threaded rod and screwed pipe is favorable to dismantling first slant connecting pipe and second slant connecting pipe, demolish and build the work after making things convenient for the work.
2. The utility model discloses in, second transverse connection pole, the connecting block, U type frame, the setting of connecting plate and connection fixed plate is favorable to connecting fixed work, prevents that the bracket structure from reducing work efficiency complicacy.
3. The utility model discloses in, first slant connecting pipe, the setting of second slant connecting pipe and fixed through hole is favorable to adjusting the position of first slant connecting pipe and second slant connecting pipe according to the job schedule, conveniently supports work.
4. The utility model discloses in, U type frame, connect the fixed plate, first slant connecting pipe, second slant connecting pipe and fixed through hole's setting is favorable to adjusting and fixed first slant connecting pipe and second slant connecting pipe, conveniently supports work.
5. The utility model discloses in, the bell and spigot joint pipe, first U type seat, the diagonal bracing branch spacer bar, the setting of second U type seat and second connecting seat is favorable to supporting first slant connecting pipe and second slant connecting pipe, prevents that first slant connecting pipe and second slant connecting pipe warp in the work and influence work.
6. The utility model discloses in, the setting of cup joint pipe, first U type seat and puller bolt is favorable to the position that the cup joint pipe is located second slant connecting pipe outer wall, makes things convenient for second slant connecting pipe to carry out supporting job.
7. The utility model discloses in, second transverse connection pole, the pipe cup joints, first U type seat, the tight bolt in top, the diagonal bracing parting pin, the setting of second U type seat and second connecting seat is favorable to fixing second slant connecting pipe in the dismantlement work, prevents that second slant connecting pipe from rocking and causing the potential safety hazard.
8. The utility model discloses in, the pier, the post that strengthens, connect the strengthening rib, pre-buried pole, the setting of pre-buried connecting rod and first connecting seat is favorable to increasing the fastness of bracket and pier, prevents that the bracket from breaking away from pier influence work in the work.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the detachable diagonal bracing rod structure of the present invention.
Fig. 3 is a schematic structural view of the detachable connecting transverse rod structure of the present invention.
Fig. 4 is a schematic structural diagram of the adjustable supporting and fixing rod structure of the present invention.
In the figure:
1. a bridge pier; 2. a reinforcement column; 3. connecting reinforcing ribs; 4. pre-burying a rod; 5. pre-burying a connecting rod; 6. a first connecting seat; 7. the diagonal brace structure can be detachably adjusted; 71. a first diagonal connection pipe; 72. a second diagonal connection pipe; 73. a threaded rod; 74. a threaded pipe; 75. a fixing through hole; 8. the transverse rod structure is detachably connected; 81. a second transverse connecting rod; 82. connecting blocks; 83. a U-shaped frame; 84. a connecting plate; 85. connecting the fixed plate; 9. the structure of the supporting and fixing rod can be adjusted; 91. sleeving a pipe; 92. a first U-shaped seat; 93. jacking the bolt; 94. obliquely supporting the separation rod; 95. a second U-shaped seat; 96. a second connecting seat; 10. a first transverse connecting rod; 11. h-shaped fixed channel steel; 12. an oblique supporting rod; 13. fixing the support rod; 14. a bridge deck connecting rod; 15. bridge floor connecting seat.
Detailed Description
The present invention is described in detail with reference to the accompanying drawings, and as shown in fig. 1 and fig. 2, a novel bracket comprises a pier 1, a reinforcement column 2, a connection reinforcing rib 3, a pre-embedded rod 4, a pre-embedded connecting rod 5, a first connecting seat 6, a detachable adjustable diagonal rod structure 7, a detachable connection transverse rod structure 8, an adjustable support fixing rod structure 9, a first transverse connecting rod 10, an H-shaped fixing channel 11, a diagonal supporting rod 12, a fixing supporting rod 13, a bridge floor connecting rod 14 and a bridge floor connecting seat 15, wherein the reinforcement column 2 is poured at an inner middle position of the pier 1; one end of the connecting reinforcing rib 3 is respectively welded at the left side and the right side of the reinforcing column 2; the embedded rods 4 are poured on the left side and the right side of the pier 1; the embedded connecting rods 5 are sequentially welded between the embedded rods 4 from left to right; the first connecting seats 6 are respectively welded at the left end and the right end of the embedded rod 4; one end of the detachable adjusting inclined strut structure 7 is respectively arranged at the left side and the right side of the first connecting seat 6 arranged at the lower part; the other end of the detachable adjusting inclined strut structure 7 is arranged at the lower end of a detachable connecting transverse rod structure 8; the left side and the right side of the first connecting seat 6 are respectively arranged at the upper part of the detachable connecting transverse rod structure 8; the adjustable supporting fixed rod structure 9 is arranged between the detachable adjusting inclined supporting rod structure 7 and the detachable connecting transverse rod structure 8; the first transverse connecting rods 10 are respectively bolted to the upper parts of the left side and the right side of the pier 1; the lower end of the H-shaped fixed channel steel 11 is sequentially bolted to the upper end of the detachable connecting transverse rod structure 8 from left to right; the upper end of the H-shaped fixed channel steel 11 is sequentially bolted to the lower end of the first transverse connecting rod 10 from left to right; the inclined support rods 12 are sequentially welded at the upper end of the first transverse connecting rod 10 from left to right; the fixed support rod 13 is sequentially welded at the upper end of the first transverse connecting rod 10 from left to right; the bridge deck connecting rod 14 is connected to the lower end of the bridge deck connecting seat 15 through bolts; the bridge deck connecting seats 15 are poured at the upper ends of the piers 1; the detachable adjusting inclined strut structure 7 comprises a first inclined connecting pipe 71, a second inclined connecting pipe 72, a threaded rod 73, a threaded pipe 74 and a fixed through hole 75, wherein the threaded rod 73 is respectively in threaded connection with the middle position inside the right end of the first inclined connecting pipe 71; the threaded rod 73 is also in threaded connection with the middle position inside the left end of the second inclined connecting pipe 72; the threaded pipes 74 are respectively in threaded connection with the outer walls of the left end and the right end of the threaded rod 73; the fixing through holes 75 are respectively formed in the middle positions of the left sides of the front surfaces of the first inclined connecting pipes 71; the fixing through hole 75 is further formed in the middle position of the right side of the front surface of the second inclined connecting pipe 72; during the use, with the left and right sides of the first connecting seat 6 of first slant connecting pipe 71's left end bolted connection lower part setting, connect threaded rod 73 and screwed pipe 74 as required, conveniently carry out bridge maintenance work, through selecting the scaffold frame as required, set up the scaffold frame in first slant connecting pipe 71 below, conveniently carry out scaffold frame fixed work.
In this embodiment, referring to fig. 3, the detachable connecting transverse rod structure 8 includes a second transverse connecting rod 81, a connecting block 82, a U-shaped frame 83, a connecting plate 84 and a connecting fixing plate 85, wherein the connecting block 82 is welded at the left end of the second transverse connecting rod 81; the U-shaped frame 83 is welded at the lower end of the connecting block 82; the connecting plate 84 is welded at the right side of the connecting fixing plate 85; the right end of the second transverse connecting rod 81 is welded at the upper part of the left side of the connecting fixing plate 85; connect second transverse connection pole 81 as required in the left and right sides of the first connecting seat 6 that upper portion set up, select a certain amount of second transverse connection pole 81 to connect through connecting plate 84 as required, conveniently carry out the fixed work, connect the right-hand member of second slant connecting pipe 72 in the left side lower part of connecting fixed plate 85 simultaneously, conveniently connect the scaffold frame in the work is maintained to the bridge, conveniently carry out bridge maintenance work.
In this embodiment, referring to fig. 4, the adjustable supporting and fixing rod structure 9 includes a socket 91, a first U-shaped seat 92, a tightening bolt 93, an inclined supporting and separating rod 94, a second U-shaped seat 95 and a second connecting seat 96, wherein the bolt of the first U-shaped seat 92 is connected to the upper end of the socket 91; the puller bolt 93 is in threaded connection with the middle position of the lower end of the sleeve pipe 91; the inclined supporting separation rod 94 is respectively and axially connected between the first U-shaped seat 92 and the second U-shaped seat 95; the second U-shaped seat 95 is bolted to the lower end of the second connecting seat 96; after the scaffold is fixed, the second connecting seat 96 is connected to the proper position of the lower end of the second transverse connecting rod 81, the sleeve pipe 91 is sleeved on the proper position of the outer wall of the second oblique connecting pipe 72, the tightening bolt 93 is screwed, the first oblique connecting pipe 71 and the second oblique connecting pipe 72 are fixed, and the first oblique connecting pipe 71 and the second oblique connecting pipe 72 are prevented from deforming in work and influencing the personal safety of workers.
In this embodiment, specifically, the fixed support rods 13 are respectively disposed between the inclined support rods 12; the other ends of the connecting reinforcing ribs 3 are respectively welded in the middle positions of the left side and the right side of the embedded connecting rod 5.
In this embodiment, specifically, two threaded rods 73 are provided; the threaded pipe 74 is disposed between the first slant connection pipe 71 and the second slant connection pipe 72.
In this embodiment, specifically, the left ends of the first oblique connecting pipes 71 are respectively bolted to the left and right sides of the first connecting seat 6 disposed at the lower portion.
In this embodiment, specifically, the connecting blocks 82 are respectively bolted to the left and right sides of the first connecting base 6 disposed at the upper portion.
In this embodiment, specifically, the right end of the second inclined connecting pipe 72 is bolted to the lower part of the left side of the connecting fixing plate 85.
In this embodiment, specifically, the sleeve pipe 91 is sleeved on the left side of the outer wall of the second oblique connecting pipe 72.
In this embodiment, specifically, the second connecting seat 96 is bolted to the left side of the lower end of the second transverse connecting rod 81.
Principle of operation
In the utility model, when in use, the left end bolt of the first slant connecting pipe 71 is connected with the left and right sides of the first connecting seat 6 arranged at the lower part, the threaded rod 73 and the threaded pipe 74 are connected according to the work requirement, the bridge maintenance work is convenient to be carried out, the scaffold is arranged under the first slant connecting pipe 71 by selecting the scaffold according to the requirement, the scaffold fixing work is convenient to be carried out, the second transverse connecting rod 81 is connected with the left and right sides of the first connecting seat 6 arranged at the upper part according to the requirement, a certain number of the second transverse connecting rods 81 are selected according to the work requirement and connected through the connecting plate 84, the fixing work is convenient to be carried out, meanwhile, the right end of the second slant connecting pipe 72 is connected with the lower part of the left side of the connecting and fixing plate 85, the scaffold is convenient to be connected in the bridge maintenance work, the bridge maintenance work is convenient to be carried out, after the scaffold is fixed, the, the sleeving pipe 91 is sleeved at a proper position of the outer wall of the second inclined connecting pipe 72, the tightening bolt 93 is screwed, the first inclined connecting pipe 71 and the second inclined connecting pipe 72 are fixed, and the first inclined connecting pipe 71 and the second inclined connecting pipe 72 are prevented from deforming in work and affecting personal safety of workers.
Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.
Claims (9)
1. The novel bracket is characterized by comprising piers (1), reinforcing columns (2), connecting reinforcing ribs (3), embedded rods (4), embedded connecting rods (5), first connecting seats (6), detachable adjusting diagonal rod structures (7), detachable connecting transverse rod structures (8), adjustable supporting and fixing rod structures (9), first transverse connecting rods (10), H-shaped fixing channel steel (11), diagonal supporting rods (12), fixing supporting rods (13), bridge deck connecting rods (14) and bridge deck connecting seats (15), wherein the reinforcing columns (2) are poured at the middle positions inside the piers (1); one end of the connecting reinforcing rib (3) is respectively welded at the left side and the right side of the reinforcing column (2); the embedded rods (4) are poured on the left side and the right side of the pier (1); the embedded connecting rods (5) are sequentially welded between the embedded rods (4) from left to right; the first connecting seats (6) are respectively welded at the left end and the right end of the embedded rod (4); one end of the detachable adjusting inclined strut structure (7) is respectively arranged at the left side and the right side of the first connecting seat (6) arranged at the lower part; the other end of the detachable adjusting inclined strut structure (7) is arranged at the lower end of the detachable connecting transverse rod structure (8); the left side and the right side of a first connecting seat (6) are respectively arranged at the upper parts of the detachable connecting transverse rod structures (8); the adjustable supporting fixed rod structure (9) is arranged between the detachable adjusting inclined supporting rod structure (7) and the detachable connecting transverse rod structure (8); the first transverse connecting rods (10) are respectively bolted to the upper parts of the left side and the right side of the pier (1); the lower end of the H-shaped fixed channel steel (11) is sequentially bolted to the upper end of the detachable connecting transverse rod structure (8) from left to right; the upper end of the H-shaped fixed channel steel (11) is sequentially bolted to the lower end of the first transverse connecting rod (10) from left to right; the inclined supporting rods (12) are sequentially welded at the upper end of the first transverse connecting rod (10) from left to right; the fixed support rod (13) is sequentially welded at the upper end of the first transverse connecting rod (10) from left to right; the bridge deck connecting rod (14) is connected to the lower end of the bridge deck connecting seat (15) through bolts; the bridge deck connecting seats (15) are poured at the upper ends of the piers (1); the detachable adjusting inclined strut structure (7) comprises a first inclined connecting pipe (71), a second inclined connecting pipe (72), a threaded rod (73), a threaded pipe (74) and a fixing through hole (75), wherein the threaded rod (73) is respectively in threaded connection with the middle position inside the right end of the first inclined connecting pipe (71); the threaded rod (73) is also in threaded connection with the middle position inside the left end of the second inclined connecting pipe (72); the threaded pipes (74) are respectively in threaded connection with the outer walls of the left end and the right end of the threaded rod (73); the fixed through holes (75) are respectively arranged at the middle position of the left side of the front surface of the first inclined connecting pipe (71); the fixing through hole (75) is further formed in the middle of the right side of the front surface of the second inclined connecting pipe (72).
2. The new form of carrier frame as claimed in claim 1, characterized in that said detachable connecting cross bar structure (8) comprises a second cross bar (81), a connecting piece (82), a U-shaped frame (83), a connecting plate (84) and a connecting fixing plate (85), said connecting piece (82) being welded at the left end of the second cross bar (81); the U-shaped frame (83) is welded at the lower end of the connecting block (82); the connecting plate (84) is welded at the right side of the connecting fixing plate (85); the right end of the second transverse connecting rod (81) is welded at the upper part of the left side of the connecting fixing plate (85).
3. The new form of carrier frame as claimed in claim 1, characterised in that said adjustable support and securement rod structure (9) comprises a socket (91), a first U-shaped seat (92), a jack bolt (93), an angled support spacer bar (94), a second U-shaped seat (95) and a second attachment seat (96), said first U-shaped seat (92) being bolted to the upper end of the socket (91); the jacking bolt (93) is in threaded connection with the middle position of the lower end of the sleeve pipe (91); the inclined supporting separation rod (94) is respectively and axially connected between the first U-shaped seat (92) and the second U-shaped seat (95); and the second U-shaped seat (95) is connected to the lower end of the second connecting seat (96) through a bolt.
4. The new form of carrier as claimed in claim 1, characterised in that said fixed support bars (13) are respectively disposed between the diagonal support bars (12); the other ends of the connecting reinforcing ribs (3) are respectively welded in the middle positions of the left side and the right side of the embedded connecting rod (5).
5. The new form of carrier as claimed in claim 1, characterized in that said threaded rods (73) are provided in two; the threaded pipe (74) is arranged between the first inclined connecting pipe (71) and the second inclined connecting pipe (72).
6. The new form of carrier frame as claimed in claim 1, characterized in that the left ends of said first diagonal connecting tubes (71) are bolted to the left and right sides of the first connecting seats (6) provided at the lower portion, respectively.
7. The new form of carrier frame as claimed in claim 2, characterised in that said connecting blocks (82) are bolted respectively to the left and right sides of the first connecting seat (6) provided at the top.
8. The new form of bracket as claimed in claim 2, characterized in that the right end of said second diagonal connecting tube (72) is bolted to the left lower portion of the connecting fixing plate (85).
9. The new form of carrier as claimed in claim 3, characterised in that said socket joint pipe (91) is fitted to the left side of the outer wall of the second oblique joint pipe (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920237926.0U CN209989702U (en) | 2019-02-26 | 2019-02-26 | Novel bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920237926.0U CN209989702U (en) | 2019-02-26 | 2019-02-26 | Novel bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209989702U true CN209989702U (en) | 2020-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920237926.0U Active CN209989702U (en) | 2019-02-26 | 2019-02-26 | Novel bracket |
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| CN (1) | CN209989702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016433A (en) * | 2021-12-24 | 2022-02-08 | 中铁一局集团有限公司 | Truss bracket device of No. 0 block and No. 1 block and construction method thereof |
-
2019
- 2019-02-26 CN CN201920237926.0U patent/CN209989702U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016433A (en) * | 2021-12-24 | 2022-02-08 | 中铁一局集团有限公司 | Truss bracket device of No. 0 block and No. 1 block and construction method thereof |
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