CN216765559U - Multifunctional construction temporary beam - Google Patents
Multifunctional construction temporary beam Download PDFInfo
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- CN216765559U CN216765559U CN202220194953.6U CN202220194953U CN216765559U CN 216765559 U CN216765559 U CN 216765559U CN 202220194953 U CN202220194953 U CN 202220194953U CN 216765559 U CN216765559 U CN 216765559U
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Abstract
The utility model belongs to the technical field of auxiliary equipment for railway bridge construction, and particularly discloses a multifunctional construction temporary beam. The multifunctional construction temporary beam comprises two first longitudinal beams arranged in parallel and a plurality of transverse beams connected vertically; the first longitudinal beam is connected into a box-shaped structure through a first cover plate and a first web plate; the thicknesses of the two ends of the first cover plate are gradually reduced, and the first cover plate is used for butting the second longitudinal beam so as to be suitable for a large-span reinforced scene; the first longitudinal beam is used independently, and can be suitable for a scene of reinforcing double lines and turnout areas; the first longitudinal beam and the second longitudinal beam are provided with a first stiffening rib and a second stiffening rib; a row of through holes are distributed on the first stiffening rib in the vertical through length mode and used for connecting a cross beam with a small size during large-span reinforcement; a row of through holes are vertically distributed at the middle lower part of the second stiffening rib and used for connecting a large-size beam when the double-line and turnout areas are reinforced; the multifunctional construction temporary beam has strong universality, can be used for various use scenes, and is particularly suitable for the occasion of overhead reinforcement of a railway line.
Description
Technical Field
The utility model belongs to the technical field of auxiliary equipment for railway bridge construction, and particularly relates to a multifunctional construction temporary beam.
Background
When overhead reinforcement is carried out on a railway line, a common reinforcement method is a temporary beam reinforcement method, and currently, the temporary beam type number mainly comprises a D-shaped beam. With the development of society, a plurality of novel temporary girders are developed in succession, wherein the temporary girders are typically provided with turnout temporary girders and large-span temporary girders.
The temporary beams with different types have certain requirements on the line condition when being applied. The D-shaped beam has four types of D12, D16, D20 and D24, is mainly suitable for single-line and double-line reinforcement with the span of 12m-24m, the curve radius of not less than 400m and the superelevation of not more than 100mm, but requires the minimum line spacing of 4m when the double-line reinforcement is carried out, and the double-line reinforcement mode is that two holes are placed side by side for reinforcement, but the beam once reinforces double lines instead of a single hole. The turnout auxiliary beam is applied to the reinforcement of a single turnout line area. The long-span just roof beam is applied to the circuit reinforcement when wearing structure width greatly down.
Although the temporary beam plays an important role in overhead reinforcement of railway lines, various temporary beams have a specific application range in the use process, and when the span of the underpass structure is large, only a large-span temporary beam can be used and turnout temporary beams or D-shaped beams cannot be used for reinforcement; the long-span temporary beam is only suitable for single-line reinforcement and cannot be used for reinforcing the turnout line; the versatility between various beams is poor.
Based on this, what is needed in the art is a multifunctional construction temporary beam, which solves the problem of poor universality of the existing construction temporary beam and provides a construction temporary beam which has strong universality and can be applied to various application scenarios.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects or the improvement requirements in the prior art, the utility model provides a multifunctional construction temporary beam, which is used for solving the problem of poor universality of the temporary beam in the prior art and is strong in universality, suitable for various spans and applicable to reinforcing double lines and turnout areas.
In order to achieve the purpose, the utility model provides a multifunctional construction temporary beam which comprises two longitudinal beams arranged in parallel and a plurality of cross beams vertically connected between the longitudinal beams;
the first longitudinal beam is formed into a box-shaped structure by connecting two first cover plates and two first webs; the thickness of the first cover plate at the two ends of the first longitudinal beam is gradually reduced, and the first cover plate and the first web plate are provided with a plurality of bolt holes at the two ends of the first longitudinal beam.
Through the conception, the bolt holes are formed in the two ends of the first cover plate and the first web plate of the first longitudinal beam, so that the first longitudinal beam can be used for butt joint, the length of the longitudinal beam can be adjusted, and the requirements of the longitudinal beams with different spans can be met; on the other hand, first apron reduces at both ends thickness gradually, makes first longeron big at middle part intensity to be suitable for the reinforced scene in double-line and switch district, first longeron both ends can be used for the relatively less region of atress demand, and make first longeron can dock the longeron that the atress demand is relatively less, with the reinforced scene of being suitable for the large-span.
Preferably, the multifunctional construction temporary beam further comprises a second longitudinal beam butted with the first longitudinal beam, and the second longitudinal beam is butted with one of the two first longitudinal beams at the same end or two ends of the two first longitudinal beams; the second longitudinal beam is connected by two second cover plates and two second webs to form a box-type structure; the second cover plate is butted with the first cover plate, and the thickness of the second cover plate is equal to that of the butted part of the first cover plate; the second web plate is butted with the first web plate; a plurality of bolt holes are formed in the butt joint of the second cover plate and the second web plate; the cross beams are also vertically connected between every two parallel second longitudinal beams; the second longitudinal beams are connected to one end or two ends of the first longitudinal beam by adjusting the number of the second longitudinal beams, so that the length of the longitudinal beams can be adjusted, and the requirements of the longitudinal beams with different spans can be met; when the two second longitudinal beams are respectively butted with the two ends of the first longitudinal beam, the method is suitable for a large-span reinforced scene.
Preferably, the butt joint form of the first longitudinal beam and the second longitudinal beam is as follows: the first cover plate and the second cover plate are clamped by the outer splicing plate of the wing plate and the inner splicing plate of the wing plate, and the outer splicing plate of the wing plate and the inner splicing plate of the wing plate are connected by a bolt penetrating through a bolt hole of the first cover plate or the second cover plate; the first web plate and the second web plate are connected with the web plate splicing plate, and the web plate splicing plate is fixed to the first web plate or the second web plate through the bolt holes of the first web plate or the second web plate through bolts.
Preferably, the length of the first longitudinal beam is 10m-26 m; the length is equivalent to the length of a standard D-shaped beam and can be used independently.
Preferably, the first web and the second web are provided with hand holes at the butt joint part, so that bolts are conveniently screwed.
Preferably, the length of the second longitudinal beam is 2m-6 m; through the butt joint of the second longitudinal beam and the first longitudinal beam, the requirement of 10-32 m span can be met, and the requirements of common span and large span are met.
Preferably, the thickness of the cover plate of the first longitudinal beam is 70mm-90 mm; the thickness of the cover plate of the second longitudinal beam is 50mm-70 mm.
Preferably, the outer sides of two first webs of the first longitudinal beam and the outer sides of two second webs of the second longitudinal beam are respectively and uniformly distributed with first stiffening ribs and second stiffening ribs, and the first stiffening ribs of the first longitudinal beam and the second longitudinal beam which are mutually butted are arranged at the same side; the first stiffening rib and the second stiffening rib are respectively vertically connected with the adjacent first web plate or the second web plate; a row of through holes are uniformly distributed on the first stiffening rib in the vertical direction, and a row of through holes are uniformly distributed on the middle lower part of the second stiffening rib in the vertical direction; the first stiffening rib and the second stiffening rib are arranged differently and used for connecting the cross beam, the first stiffening rib is beneficial to adjusting the height of the cross beam, and the method is suitable for single-line and large-span reinforcement scenes; the second stiffening ribs are beneficial to stress of the cross beam and are suitable for a scene of reinforcing double lines and turnout areas.
Preferably, the distance between the through holes on the first stiffening rib is smaller than that between the through holes on the second stiffening rib; enabling the second stiffener to be used to connect beams of greater height.
Preferably, the cross beam is I-shaped in cross section, the height is 200mm-250mm, the length is 3m-5m, and two ends of the cross beam penetrate through the through holes in the first stiffening ribs through bolts so as to realize the connection between the cross beam and the two parallel first longitudinal beams or the second longitudinal beams; the crossbeam of this specification is applicable to single line and large-span circuit, and is little because of the bearing of the little and crossbeam of interval between the longeron, and the specification of crossbeam is less.
Preferably, the cross beam is I-shaped in cross section, the height of the cross beam is 500mm-700mm, the length of the cross beam is 6m-10m, and two ends of the cross beam penetrate through the through holes in the second stiffening ribs through bolts so as to realize the connection between the cross beam and the two parallel first longitudinal beams or the two parallel second longitudinal beams; and a plurality of turnout fixing holes are uniformly distributed on the upper flange of the beam; the cross beam with the specification is suitable for reinforcing double lines and turnout areas, and the cross beam with a larger specification is needed due to the large distance between the longitudinal beams and the heavy bearing weight of the cross beam; meanwhile, the cross beam is connected with the through hole on the second stiffening rib, so that the cross beam is connected with the middle lower part of the longitudinal beam, and the stress of the cross beam is facilitated; a plurality of switch fixed orificess of upper limb evenly distributed at this crossbeam to when being applied to the switch zone time, can be used for fixed switch.
Preferably, the bottom of the cross beam is crosswise provided with a lower parallel connection to reinforce the cross beam.
Generally, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:
1. the bolt holes are formed in the two ends of the first cover plate and the first web plate of the first longitudinal beam, so that the first longitudinal beam can be used for butt joint, the length of the longitudinal beam can be adjusted, and the requirements of the longitudinal beams with different spans can be met; on the other hand, the thickness of the first cover plate is gradually reduced at the two ends, so that the first longitudinal beam is reinforced in the middle part to be suitable for a scene of reinforcing the double lines and the turnout area, the two ends can be used for areas with relatively smaller stress requirements, and the longitudinal beam with relatively smaller stress requirements can be butted.
2. As an improvement of the scheme, the length of the longitudinal beam is adjusted by connecting the second longitudinal beam at one end or two ends of the first longitudinal beam, so that the requirements of the longitudinal beams with different spans are met; when the two second longitudinal beams are respectively butted with the two ends of the first longitudinal beam, the method is suitable for a large-span reinforced scene.
3. As another improvement of the above scheme, different first stiffening ribs and second stiffening ribs are arranged to connect the cross beam, and the first stiffening ribs are beneficial to adjusting the height of the cross beam and suitable for single-line and large-span reinforced scenes; the second stiffening ribs are beneficial to stress of the cross beam and are suitable for a scene of reinforcing double lines and turnout areas.
4. As a further improvement of the above scheme, the cross beam is adapted to the above various scenes by the preferable design of the specifications of the cross beam, and is matched with the longitudinal beam, so that the universality of the construction temporary beam is further increased.
5. As a further improvement of the scheme, the lower parallel connection is arranged at the bottom of the cross beam to reinforce the cross beam.
Drawings
FIG. 1 is a side view of a first embodiment of the present invention;
FIG. 2 is a partial top view of a first embodiment of the present invention;
FIG. 3 is a schematic illustration of the butt joint of a first stringer and a second stringer of an embodiment of the present invention;
FIG. 4 is a side view of FIG. 3 (first and second stiffeners are not shown);
FIG. 5 is a side view of a second embodiment of the present invention;
fig. 6 is a top view of the second embodiment of the present invention.
Throughout the drawings, the same reference numerals are used to designate the same elements or structures, which are:
the structure comprises a first longitudinal beam 1, a second longitudinal beam 2, a cross beam 3, a first stiffening rib 4, a second stiffening rib 5, a flange plate outer splicing plate 6, a flange plate inner splicing plate 7, a web splicing plate 8, a hand hole 9, a first cover plate 11, a first web plate 12, a second cover plate 21, a second web plate 22, a connecting plate 31, a corner brace 32 and a lower parallel connection 33.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
When the railway line is reinforced in an overhead manner, a common reinforcing method is a temporary beam reinforcing method, and currently applied construction temporary beams mainly comprise D-shaped beams, turnout temporary beams, large-span temporary beams and the like, and are respectively applied to single-line and double-line reinforcement of general spans, turnout area reinforcement and large-span single-line reinforcement. In the using process, various construction temporary beams have specific application ranges, and the universality among the construction temporary beams is poor. Based on the above, the embodiment of the utility model provides a multifunctional construction temporary beam, which is used for solving the problem of poor universality of the existing construction temporary beam and is strong in universality and applicable to various application scenes.
Example one
Fig. 1-4 illustrate an application of the multifunctional construction temporary beam provided by the embodiment of the utility model in a large-span reinforcement scenario; wherein, fig. 1 shows a side view of the first embodiment; FIG. 2 shows a partial top view of the first embodiment; FIGS. 3 and 4 illustrate the interface of a first stringer and a second stringer of an embodiment;
as shown in fig. 1 and fig. 2 (a schematic view of a portion on one side of a center line in fig. 2), a multifunctional construction stringer according to an embodiment of the present invention includes two first longitudinal beams 1 arranged in parallel, and a total of four small-span second longitudinal beams 2 connected to both ends of each first longitudinal beam 1; the first longitudinal beam 1 and the second longitudinal beam 2 are both box-shaped structures;
as shown in fig. 1 and 2, the cross member 3 is vertically connected in plurality between two parallel first longitudinal members 1 and between each two parallel second longitudinal members 2.
The individual components of the first embodiment will be described in more detail below.
The first longitudinal beam 1 is formed by connecting two first cover plates 11 and two first web plates 12, and the thickness of the first cover plates 11 is gradually reduced at two ends along the extension direction of the first longitudinal beam 1; the second longitudinal beam 2 is formed by connecting two second cover plates 21 and two second webs 22; the second cover plate 21 is butted with the first cover plate 11, and the thickness of the second cover plate 21 is equal to that of the first cover plate 11 at the butted position; in the first embodiment, the thickness of the first cover plate 11 is 70mm, and the thickness is gradually reduced to 50mm at two ends; the thickness of the second cover plate 21 is selected to be 50 mm; in some embodiments, the first cover plate 11 is 70mm to 90mm thick; the thickness of the second cover plate 21 is 50mm-70 mm; the second web 22 is butted against the first web 12; the first cover plate 11, the first web 12, the second cover plate 21 and the second web 22 are provided with a plurality of bolt holes at the butt joints.
In the first embodiment, the length of the first longitudinal beam 1 is 26m, the length of the second longitudinal beam 2 is 3m, and the total length of the longitudinal beams is 32 m; in some embodiments, the length of the first stringer 1 is 10m-26m, and the length of the second stringer 2 is 2m-6 m; the length of the first stringer 1 is comparable to the length of a standard D-beam, so in some embodiments the first stringer 1 may be used alone; in other embodiments, a second stringer 2 is used to interface with the first stringer 1; through different butt joint modes of the second longitudinal beam 2 and the first longitudinal beam 1, the requirement of 10-32 m span can be met, and the requirements of common span and large span are met.
As shown in fig. 3 and 4, the butt joint of the first longitudinal beam 1 and the second longitudinal beam 2 is in the form of: the first cover plate 11 and the second cover plate 21 are clamped by the wing plate outer splicing plate 6 and the wing plate inner splicing plate 7, and the wing plate outer splicing plate 6 is connected with the wing plate inner splicing plate 7 through a bolt hole of the first cover plate 11 or the second cover plate 21 by a bolt; the first web plate 12 and the second web plate 22 are both connected with the web plate splicing plate 8, and the web plate splicing plate 8 is fixed on the first web plate 12 or the second web plate 22 through bolts penetrating through bolt holes of the first web plate 12 or the second web plate 22; the first web plate 12 and the second web plate 22 are provided with hand holes 9 at the butt joint part, so that bolts can be conveniently screwed; in the first embodiment, the web splicing plate 8 is further provided with a hand hole 9 penetrating the first web 12 or the second web 22.
In the first embodiment, the outer sides of two first webs 12 of the first longitudinal beam 1 and the outer sides of two second webs 22 of the second longitudinal beam 2 are respectively and uniformly distributed with first stiffening ribs 4 and second stiffening ribs 5, and the first stiffening ribs 4 of the first longitudinal beam 1 and the second longitudinal beam 2 which are mutually butted are arranged on the same side; as shown in fig. 1, the first stiffener 4 and the second stiffener 5 are vertically connected to the first web 12 or the second web 22, respectively, which is approached; one row of through holes are uniformly distributed on the first stiffening rib 4 in the vertical through length, and one row of through holes are uniformly distributed on the middle lower part of the second stiffening rib 5 in the vertical through length.
In the first embodiment, the cross beam 3 is an I-shaped cross section, the height of the cross beam 3 is 250mm, and the length of the cross beam 3 is 4 m; in some embodiments, the height of the beam 3 is 200mm to 250mm, and the length is 3m to 5 m; the crossbeam 3 of this specification is applicable to single line and large-span circuit, and is little because of the bearing of the little and crossbeam 3 of interval between the longeron, and the specification of crossbeam 3 is less.
In the first embodiment, two ends of the cross beam 3 pass through the through holes on the first stiffening ribs 4 through bolts so as to realize the connection of the cross beam 3 and two parallel first longitudinal beams 1 or second longitudinal beams 2; specifically, as shown in fig. 1, a connecting plate 31 is provided at the connection between the cross beam 3 and the first longitudinal beam 1 or the second longitudinal beam 2, one end of the connecting plate 31 is connected to the cross beam 3 by a bolt, and the other end of the connecting plate 31 is connected to the first stiffening rib 4 by a bolt passing through a through hole in the first stiffening rib 4; a row of through holes are uniformly distributed on the first stiffening rib 4 along the vertical through length, so that the height of the cross beam 3 can be adjusted, and the method is suitable for single-line and large-span reinforcement scenes; in the first embodiment, a corner brace 32 is further provided to connect the cross beam 3 to the first longitudinal beam 1 or the second longitudinal beam 2.
In the first embodiment, as shown in fig. 2, the bottom of the beam 3 is crossed by a lower parallel connection 33 to reinforce the beam 3.
Example two
Fig. 5 and 6 show an application of the multifunctional construction temporary beam provided by the embodiment of the utility model in a reinforcing scene of a double-line or turnout area; wherein, fig. 5 shows a side view of embodiment two of the present invention; FIG. 6 shows a top view of a second embodiment of the present invention; as shown in fig. 6, the multifunctional construction temporary beam provided by the second embodiment of the utility model comprises two first longitudinal beams 1 arranged in parallel, and is not butted against a second longitudinal beam 2; in the second embodiment of the utility model, the cross beam 3 has an i-shaped cross section, and two ends of the cross beam penetrate through the through holes in the second stiffening ribs 5 through bolts so as to be connected with the first longitudinal beam 1.
The respective components of the second embodiment will be described in more detail one by one.
In the second embodiment, the length of the first longitudinal beam 1 is selected to be 24m, the thickness of the first cover plate 11 is selected to be 90mm, and the thickness is gradually reduced to 70mm at both ends.
In the second embodiment, the height of the beam 3 is 600mm, and the length is 10 m; in some embodiments, the height of the beam 3 is 500mm-700mm, and the length is 6m-10 m; the cross beam 3 with the specification is suitable for reinforcing double lines and turnout areas, and the cross beam 3 with a larger specification is needed due to the large distance between the longitudinal beams and the heavy bearing of the cross beam 3; in the second embodiment, a plurality of switch fixing holes are uniformly distributed on the upper flange of the cross beam 3, so that the switch fixing holes can be used for fixing switches when being applied to switch areas.
As shown in fig. 5, the cross beam 3 passes through the through holes on the second stiffening ribs 5 by bolts to achieve connection with the first longitudinal beam 1; a row of through holes are vertically and uniformly distributed at the middle lower part of the second stiffening rib 5, so that the stress of the cross beam 3 is facilitated, and the method is suitable for a scene of reinforcing double lines and turnout areas; in the second embodiment, the specific connection manner of the cross beam 3 and the first longitudinal beam 1 is the same as that in the first embodiment.
In the second embodiment, as shown in fig. 6, the bottom of the cross beam 3 is crosswise provided with a lower parallel connection 33 to reinforce the cross beam 3.
In conclusion, the multifunctional construction temporary beam can be applied to railway overhead reinforcement in single-line, double-line, large-span and turnout areas, and is simple in overall structure and high in universality, so that the multifunctional construction temporary beam is particularly suitable for the application occasions of railway overhead reinforcement.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A multifunctional construction temporary beam is characterized by comprising two first longitudinal beams (1) which are arranged in parallel and a plurality of cross beams (3) which are vertically connected between the two first longitudinal beams (1);
the first longitudinal beam (1) is formed by connecting two first cover plates (11) and two first webs (12) to form a box-shaped structure; the thickness of the first cover plate (11) is gradually reduced at two ends of the first longitudinal beam (1), and a plurality of bolt holes are formed in the two ends of the first longitudinal beam (1) of the first cover plate (11) and the first web plate (12).
2. The multifunctional construction beam as claimed in claim 1, further comprising a second longitudinal beam (2) butted with the first longitudinal beam (1), wherein the second longitudinal beam (2) is butted one at the same end or both ends of the two first longitudinal beams (1); the second longitudinal beam (2) is formed into a box-shaped structure by connecting two second cover plates (21) and two second webs (22); the second cover plate (21) is butted with the first cover plate (11), and the thickness of the second cover plate (21) is equal to that of the first cover plate (11) at the butted position; the second web (22) is in abutment with the first web (12); the second cover plate (21) and the second web plate (22) are provided with a plurality of bolt holes at the butt joint part; the cross beams (3) are also vertically connected between every two parallel second longitudinal beams (2).
3. The multifunctional construction beam as claimed in claim 2, wherein the first longitudinal beam (1) and the second longitudinal beam (2) are butted in the form of: the first cover plate (11) and the second cover plate (21) are clamped by the wing plate outer splicing plate (6) and the wing plate inner splicing plate (7), and the wing plate outer splicing plate (6) is connected with the wing plate inner splicing plate (7) through a bolt hole of the first cover plate (11) or the second cover plate (21) by a bolt; the first web plate (12) and the second web plate (22) are connected with a web plate splicing plate (8), and bolts penetrate through bolt holes of the first web plate (12) or the second web plate (22) to fix the web plate splicing plate (8) to the first web plate (12) or the second web plate (22).
4. The multifunctional construction joist according to claim 3, characterised in that the first and second webs (12, 22) are provided with hand holes (9) at the butt joints.
5. The multifunctional construction girder according to claim 2, wherein the length of the first longitudinal girder (1) is 10m-26 m; the length of the second longitudinal beam (2) is 2m-6 m.
6. The multifunctional construction girder according to any one of claims 2 to 5, wherein the first stiffening ribs (4) and the second stiffening ribs (5) are uniformly distributed on the outer sides of the two first webs (12) of the first longitudinal girder (1) and the outer sides of the two second webs (22) of the second longitudinal girder (2), respectively, and the first stiffening ribs (4) of the first longitudinal girder (1) and the second longitudinal girder (2) which are butted with each other are arranged on the same side; the first stiffening rib (4) and the second stiffening rib (5) are respectively vertically connected with the adjacent first web plate (12) or second web plate (22); the vertical through-hole row that evenly distributes on first stiffening rib (4), the vertical evenly distributed through-hole row in the lower part in second stiffening rib (5).
7. The multifunctional construction joists of claim 6, wherein the spacing of the through holes on the first stiffening rib (4) is smaller than the spacing of the through holes on the second stiffening rib (5).
8. The multifunctional construction beam as claimed in claim 7, wherein the cross beam (3) has an i-shaped cross section and a height of 200mm to 250 mm; two ends of the cross beam (3) penetrate through the through holes in the first stiffening ribs (4) through bolts so as to realize the connection of the cross beam (3) and the two parallel first longitudinal beams (1) or second longitudinal beams (2).
9. The multifunctional construction beam as claimed in claim 7, wherein the cross beam (3) has an I-shaped cross-section and a height of 500mm-700 mm; two ends of the cross beam (3) penetrate through the through holes in the second stiffening ribs (5) through bolts so as to realize the connection of the cross beam (3) and the two parallel first longitudinal beams (1) or the second longitudinal beams (2).
10. The multifunctional construction beam as claimed in claim 9, wherein a plurality of switch fixing holes are uniformly distributed on the upper flange of the cross beam (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202220194953.6U CN216765559U (en) | 2022-01-24 | 2022-01-24 | Multifunctional construction temporary beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220194953.6U CN216765559U (en) | 2022-01-24 | 2022-01-24 | Multifunctional construction temporary beam |
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| CN216765559U true CN216765559U (en) | 2022-06-17 |
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