CN216922169U - Adjustable supporting device for tunnel - Google Patents
Adjustable supporting device for tunnel Download PDFInfo
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- CN216922169U CN216922169U CN202123392293.7U CN202123392293U CN216922169U CN 216922169 U CN216922169 U CN 216922169U CN 202123392293 U CN202123392293 U CN 202123392293U CN 216922169 U CN216922169 U CN 216922169U
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- 230000007246 mechanism Effects 0.000 claims abstract description 67
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 abstract description 28
- 238000010276 construction Methods 0.000 abstract description 24
- 230000005641 tunneling Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 19
- 238000009412 basement excavation Methods 0.000 description 18
- 239000002689 soil Substances 0.000 description 14
- 125000006850 spacer group Chemical group 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses an adjustable supporting device for a tunnel, which comprises a middle column body, an upper supporting mechanism arranged at the upper end of the middle column body, a lower supporting mechanism arranged at the lower end of the middle column body and a rotary supporting mechanism arranged on the middle column body, wherein the upper supporting mechanism is connected with the lower supporting mechanism through a connecting rod; the upper supporting mechanism can be adjusted in a reciprocating mode relative to the middle column body along the axis direction, the lower supporting mechanism can be adjusted in a reciprocating mode relative to the middle column body along the axis direction, the supporting middle partition column can be adjusted in an axial telescopic mode through assembling and forming of all parts on a construction site, and the supporting function of the supporting middle partition column for the tunnel can be gradually relieved through a telescopic system, so that construction accidents caused by the fact that the vault loses supporting force suddenly are prevented; the support assembly can realize the arrangement of the row, the single support is changed into the row or multi-structure support, the overall support performance is greatly improved, and meanwhile, the middle partition columns are recycled through circularly moving the middle partition columns along with the gradual tunneling construction of the tunnel.
Description
Technical Field
The utility model relates to the field of tunnel construction, in particular to an adjustable supporting device for a tunnel.
Background
The excavation methods commonly adopted by large-section tunnels at home and abroad at present are divided into an open excavation method, a cover excavation method, a shallow-buried underground excavation method and a shield method, and the subway station construction mainly adopts the shallow-buried underground excavation method as a main method and comprises a positive step method, a CD method, a CRD method, a double-side-wall pit guiding method, a side tunnel method, a middle tunnel method, a hole pile method and the like; along with the progress of technique and the continuous requirement of construction progress accelerate, center pillar rock-wall joint support construction method obtains the application gradually, and the place that is different from other shallow excavation methods lies in: a central temporary supporting system is additionally arranged in the center pillar rock wall combined supporting method, so that core soil can be removed in advance, and the construction progress is accelerated; however, the temporary support system is usually of a reinforced concrete structure or a steel structure at present, the construction steps are more, the temporary support system is difficult to dismantle in subsequent construction, and great resource waste is caused.
Therefore, a new adjustable supporting device for tunnel is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In view of the above, the supporting middle partition column in the technical scheme can be used in different use scenes in an adjusting range by assembling and forming each component on a construction site, can be axially telescopically adjusted, and can gradually release pressure for the supporting function of a tunnel through a telescopic system, so that construction accidents caused by sudden loss of supporting force of a vault are prevented; through the support assembly, the row arrangement can be realized, the single support is changed into the row arrangement or the multi-structure support, the overall support performance is greatly improved, and meanwhile, the partition columns are recycled through the circulating movement of the partition columns along with the gradual excavation construction of the tunnel.
An adjustable supporting device for a tunnel comprises a middle column body, an upper supporting mechanism arranged at the upper end of the middle column body, a lower supporting mechanism arranged at the lower end of the middle column body and a rotary supporting mechanism arranged on the middle column body; the upper support mechanism is reciprocally adjustable in the axial direction with respect to the intermediate cylinder, and the lower support mechanism is reciprocally adjustable in the axial direction with respect to the intermediate cylinder.
Furthermore, the rotary supporting mechanism comprises an upper rotary supporting mechanism and a lower rotary supporting mechanism which have the same structure, and the upper rotary supporting mechanism and the lower rotary supporting mechanism are rotatably arranged on the middle column body.
Further, the upper rotary supporting mechanism comprises a rotary component and a support component arranged on the rotary component; the rotary component comprises a rotary sleeve sleeved on the middle column body, a meshing gear ring arranged at the end part of the rotary sleeve, balls arranged on the end face of the rotary sleeve and a hoop arranged on the middle column body and used for axially limiting the rotary sleeve.
Further, install on the middle cylinder and be used for driving meshing ring gear pivoted driving motor, the sleeve annular has been seted up to the terminal surface of swivel sleeve, and the staple bolt annular has been seted up to the terminal surface of staple bolt, sleeve annular and staple bolt annular are closed to embrace and are formed and are used for the rolling roller circuit of ball.
Further, the support assembly comprises a first support telescopic rod, a second support telescopic rod and a support concave ring, wherein the first support telescopic rod and the second support telescopic rod are hinged to the rotating sleeve, and the support concave ring is arranged at the end part of the first support telescopic rod; the first supporting telescopic rod is hinged with the end part of the second supporting telescopic rod.
Furthermore, the rotating sleeve is provided with two support lugs which are arranged in parallel in the circumferential direction, and a transverse positioning shaft is connected and arranged between the two support lugs.
Further, it is the same with lower supporting mechanism to go up supporting mechanism, it includes flexible loop bar, sets up in the last tray subassembly of last flexible loop bar tip, installs the jack subassembly in the middle post body and sets up the direction subassembly between flexible loop bar and the middle post body to go up supporting mechanism.
Furthermore, the jack assembly comprises a reaction plate arranged in the middle column body, a reinforcing support plate arranged in the middle column body and used for supporting the reaction plate, and a jack which is arranged on the reaction plate and used for driving the upper telescopic sleeve rod to stretch and retract along the axis direction; the guide assembly comprises a sliding rail arranged on the outer side of the middle column body and a pulley which is arranged in the upper telescopic sleeve rod and is used for being matched with the sliding rail; the upper tray assembly comprises an upper tray arranged at the end part of the upper telescopic loop bar and a supporting reinforcing column arranged between the upper tray and the upper telescopic loop bar.
Furthermore, a plurality of sliding rails are uniformly arranged along the circumferential direction of the middle cylinder; an upper tray pin is arranged on the upper tray, and a welding cushion block used for axially limiting the hoop is arranged on the middle column body.
The utility model has the beneficial effects that:
according to the supporting middle partition column, all the parts are assembled and molded on a construction site, so that the supporting middle partition column can be used in different use scenes in an adjusting range, can be axially adjusted in a telescopic mode, and can gradually release pressure for the supporting function of a tunnel through a telescopic system, so that construction accidents caused by the fact that a vault suddenly loses supporting force are prevented; the support bracket assembly can realize the arrangement of the row, the single support is changed into the row or multi-structure support, the overall support performance is greatly improved, and meanwhile, the middle separation columns are recycled through the circulating movement of the middle separation columns along with the gradual tunneling construction of the tunnel.
Drawings
The utility model is further described below with reference to the following figures and examples:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of an upper slewing support mechanism according to the present invention;
FIG. 3 is a schematic view of the upper support mechanism of the present invention;
FIG. 4 is a schematic cross-sectional view of a rotating sleeve according to the present invention;
FIG. 5 is a schematic view of a lower support mechanism of the present invention;
FIG. 6 is a schematic view of a row of spacers in a support of the present invention;
FIG. 7 is a schematic view of the row-by-row movement of the spacers in the support of the present invention.
Detailed Description
FIG. 1 is a schematic view of the overall structure of the present invention; FIG. 2 is a schematic view of an upper slewing support mechanism according to the present invention; FIG. 3 is a schematic view of the upper support mechanism of the present invention; FIG. 4 is a schematic cross-sectional view of a rotating sleeve according to the present invention; FIG. 5 is a schematic view of a lower support mechanism of the present invention; FIG. 6 is a schematic view of a row of spacers in a support of the present invention; FIG. 7 is a schematic view of the row movement of the spacers in the support of the present invention; as shown in the figures, the adjustable supporting device for the tunnel comprises a middle column body 1, an upper supporting mechanism 8 arranged at the upper end of the middle column body 1, a lower supporting mechanism 9 arranged at the lower end of the middle column body 1 and a rotary supporting mechanism arranged on the middle column body; the upper supporting mechanism 8 can be adjusted in a reciprocating mode along the axial direction relative to the middle cylinder, and the lower supporting mechanism 9 can be adjusted in a reciprocating mode along the axial direction relative to the middle cylinder; according to the supporting middle partition column, all the parts are assembled and molded on a construction site, so that the supporting middle partition column can be used in different use scenes in an adjusting range, can be axially adjusted in a telescopic mode, and can gradually release pressure for the supporting function of a tunnel through a telescopic system, so that construction accidents caused by the fact that a vault suddenly loses supporting force are prevented; the support bracket assembly can realize the arrangement of the row, the single support is changed into the row or multi-structure support, the overall support performance is greatly improved, and meanwhile, the middle separation columns are recycled through the circulating movement of the middle separation columns along with the gradual tunneling construction of the tunnel.
In this embodiment, the rotary supporting mechanism includes an upper rotary supporting mechanism 5 and a lower rotary supporting mechanism 4 having the same structure. The upper rotary supporting mechanism 5 and the lower rotary supporting mechanism 4 adopt the same structure, so that the production and the manufacture are convenient, and the production cost is reduced; go up gyration supporting mechanism 5 and lower gyration supporting mechanism 4 rotatable installation on middle cylinder 1, conveniently realize the row's of antithetical couplet overlap joint between the different support intermediate pillars, promote overall stability.
In this embodiment, the upper rotary supporting mechanism 5 includes a rotary component and a support component 7 mounted on the rotary component (a lower support component 6 is correspondingly disposed on the lower rotary supporting mechanism 4); the rotating assembly 5 comprises a rotating sleeve 52 sleeved on the middle column 1, a meshing gear ring 58 arranged at the end part of the rotating sleeve 52, balls 56 arranged on the end surface of the rotating sleeve 52 and a hoop 57 which can be fastened on the middle column and used for axially limiting the rotating sleeve. The support bracket assembly 7 is used for a middle spacer column to form a row structure, a mounting seat structure for mounting the support bracket assembly 7 is arranged on the rotary sleeve 52, the meshing gear ring 58 is fixedly mounted on the end face of the rotary sleeve 52, the meshing gear ring 58 is driven to rotate through the driving motor to further enable the rotary sleeve 52 to rotate, the hoop 57 and the hoop 59 are fixedly mounted on the middle column body 1 and used for axially limiting the rotary sleeve 52, and the welding cushion block 51 is used for further limiting the rotary support mechanism to move relative to the middle column body.
In this embodiment, install on the middle cylinder 1 and be used for drive meshing ring gear pivoted driving motor 3 (driving motor 3 carries out operation control through control system 2, and control system 2 is prior art, and this is unnecessary repeated for redundant description), sleeve annular 55 has been seted up to the terminal surface of swivel sleeve 52, and the staple bolt annular has been seted up to staple bolt 57's terminal surface, sleeve annular and staple bolt annular embrace the formation in close mode and are used for the rolling roller circuit of ball 56 (also be provided with the staple bolt annular on the staple bolt 59, the ball on the staple bolt uses under the cooperation). The anchor ear and the rotating sleeve 52 cooperate to form a roller race for the movement of the balls 56 to facilitate rotation of the rotating sleeve 52.
In this embodiment, the supporting bracket assembly 7 includes a first supporting telescopic rod 71 and a second supporting telescopic rod 72 which are hinged to the rotating sleeve 52, and a supporting bracket concave ring 73 which is installed at the end of the first supporting telescopic rod 71; the first supporting telescopic rod 71 and the second supporting telescopic rod 72 are hinged at the ends (the supporting assembly 6 and the supporting assembly 7 adopt the same structure). The two supporting telescopic rods are connected and installed on the rotating sleeve 52 in a hinged mode, the two supporting telescopic rods are also connected and installed at the end parts of the rotating sleeve and the rotating sleeve, the two supporting telescopic rods are of telescopic structures, supporting concave rings 73 at the end parts can be conveniently adjusted in position, and adjacent supporting middle partition columns can be conveniently connected and installed.
In this embodiment, the rotating sleeve 52 is provided with two support lugs 54 arranged in parallel in the circumferential direction, and a transverse positioning shaft 53 is connected between the two support lugs 54. Two lugs 54 are provided with mounting holes for mounting the transverse positioning shafts 53, and adjacent support middle spacers are arranged in a row by connecting the transverse positioning shafts 53 and the support bracket assembly.
In this embodiment, the upper supporting mechanism 8 and the lower supporting mechanism 9 are the same, and the upper supporting mechanism 8 includes an upper telescopic loop bar 89, an upper tray component disposed at an end of the upper telescopic loop bar 89, a jack component mounted in the middle column, and a guiding component disposed between the upper telescopic loop bar 89 and the middle column 1. The upper and lower supporting mechanisms are of the same structure, and the upper supporting mechanism 8 is sleeved on the middle column body 1 and can be adjusted in a telescopic mode along the axial direction of the middle column body 1.
In this embodiment, the jack assembly includes a reaction plate 801 disposed in the middle column, a reinforcing support plate 802 disposed in the middle column 1 for supporting the reaction plate 801, and a jack 85 mounted on the reaction plate 801 for driving the upper telescopic link 89 to extend and retract along the axial direction; the reinforcing support plates 802 are uniformly arranged along the inner ring direction of the middle column body 1, so that the reaction plates 801 are supported and positioned, and the safe use of the jack 85 is ensured. The guide assembly comprises a slide rail 83 arranged on the outer side of the middle column body 1 and a pulley 84 which is arranged in the upper telescopic loop bar and is used for being matched with the slide rail 83; the pulley 84 is installed on the telescopic loop bar 89 and is matched with the sliding rail 83 installed on the outer wall of the middle column body 1, and the upper tray assembly comprises an upper tray 88 installed at the end part of the upper telescopic loop bar 89 and a supporting and reinforcing column 86 arranged between the upper tray 88 and the upper telescopic loop bar 89. The upper tray 88 is mounted on the upper telescopic loop bar 89, and the support reinforcing column 86 arranged in the middle plays a role of reinforcing support. The lower support mechanism 9 is identical to the upper support mechanism except for the opposite mounting direction.
In this embodiment, 6 sliding rails 83 are uniformly arranged along the circumferential direction of the middle column 1; an upper tray pin 87 is arranged on the upper tray 88, the upper tray pin 87 can be matched with a stabilizing ring 81 welded on an arch crown I-shaped steel web plate for use, and welding cushion blocks 51 are arranged on the middle column body and are limited at two ends of the rotary supporting mechanism. Slide rail 83 sets up to 6, and corresponding pulley has arranged 6 groups along axial direction correspondence, also can adopt the guide mode of spout and slide rail certainly, further promotes the stability performance of product, and it can cooperate the stable ring 81 that welds on the arch crown I-steel web to install tray pin 87 on the tray 88 to go up, and it is spacing to further form the horizontal direction of well septum upper end for when well septum carries out the top and supports, more reliable and more stable.
In this embodiment, the method for constructing the adjustable supporting device for the tunnel includes the following steps:
s1: transporting each part of the middle partition column to a tunnel construction site for on-site assembly, inserting the lower support mechanism into the rock-soil body after assembly, and enabling the upper tray pin to be inserted into the stabilizing ring to be supported at the top of the tunnel through extension of the upper support mechanism.
S2: continuously installing middle partition columns in a preset area to form a row structure; and (4) continuously installing the intermediate isolation columns in the preset area along with the tunnel excavation until all the intermediate isolation columns needing to be installed are installed, and finally forming a row structure.
S3: moving the middle partition column at the outermost end in the tunnel to the foremost end of the tunnel, and continuing excavating construction to form a circulating support for use; when the lower rock-soil mass in the supporting range of the middle partition column at the outer end needs to be excavated, the middle partition column at the outermost end of the row structure is moved to the foremost (inner) end of the row structure through the support assembly, and when the rock-soil mass at the foremost end of the row structure is excavated to the space installation middle partition column, the middle partition column is installed in place, so that the circular support is formed for use.
When the large-section tunnel excavation adopts a center pillar and rock wall combined supporting construction method, after excavating upper steps of core soil for a certain distance according to the excavation sequence and completing primary supporting, conveying each part of a center pillar to a construction site for on-site assembly and supporting at a set position through a telescopic system, so that a bottom pin is inserted into a rock-soil body, and a top pin is inserted into a stabilizing ring 81 which is welded on an arch crown I-shaped steel web plate previously; continuing to excavate the upper step soil body of the core soil according to the excavation footage, and repeatedly installing the rest middle partition columns according to the set positions until all the middle partition columns are installed within the length range of the upper step of the core soil to form a row structure, as shown in fig. 6; of course, three middle partition columns can be adopted to form a triangular structure as a small unit, and a plurality of small units are connected to form a row structure, so that the overall stability is further improved.
When the steps in the core soil are excavated according to the excavation sequence, the support of the middle partition columns within a certain distance outside the excavation range of the steps in the core soil is cancelled through the stretching function of the support mechanism, and the middle partition columns without the support function are moved to the non-excavation range of the steps on the core soil in the excavation direction (namely, the outermost middle partition columns of the row structure release pressure and move to the innermost part of the row structure); when the next cycle is excavated according to the excavation sequence, after the soil body of the upper step of the core soil is excavated, the middle partition columns are reinstalled in the new excavation range and supported at the set position (the middle partition columns which are about to release pressure and are placed at the innermost part of the row-connected structure move the preset position in the new excavation range, and then the row-connected structure shown in figure 6 is formed), so that the functions of telescopic and recycling of the single middle partition column are realized; to the construction scene of difference, also can adopt different row's of antithetical couplet between the mesophragma arrangement mode, it is swift convenient, ensured the stability that the product used, also ensured overall structure and the stability of excavating the in-process through the mesophragma that row set up, promoted the safety guarantee.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (8)
1. The utility model provides a strutting arrangement with adjustable be used for tunnel which characterized in that: the device comprises a middle column body, an upper supporting mechanism arranged at the upper end of the middle column body, a lower supporting mechanism arranged at the lower end of the middle column body and a rotary supporting mechanism arranged on the middle column body; the upper support mechanism can be adjusted in a reciprocating mode along the axis direction relative to the middle cylinder, and the lower support mechanism can be adjusted in a reciprocating mode along the axis direction relative to the middle cylinder; the rotary supporting mechanism comprises an upper rotary supporting mechanism and a lower rotary supporting mechanism which have the same structure, and the upper rotary supporting mechanism and the lower rotary supporting mechanism are rotatably arranged on the middle column body.
2. The adjustable support device for tunnels of claim 1, wherein: the upper rotary supporting mechanism comprises a rotary component and a support component arranged on the rotary component; the rotary component comprises a rotary sleeve sleeved on the middle column body, a meshing gear ring arranged at the end part of the rotary sleeve, balls arranged on the end face of the rotary sleeve and a hoop arranged on the middle column body and used for axially limiting the rotary sleeve.
3. The adjustable supporting device for tunnel according to claim 2, wherein: install on the middle cylinder and be used for drive meshing ring gear pivoted driving motor, the sleeve annular has been seted up to the terminal surface of swivel sleeve, and the staple bolt annular has been seted up to the terminal surface of staple bolt, sleeve annular and staple bolt annular are embraced and are formed and are used for the rolling roller circuit of ball.
4. The adjustable support device for tunnels of claim 3, wherein: the support assembly comprises a first support telescopic rod, a second support telescopic rod and a support concave ring, wherein the first support telescopic rod and the second support telescopic rod are hinged to the rotating sleeve, and the support concave ring is arranged at the end part of the first support telescopic rod; the first supporting telescopic rod is hinged with the end part of the second supporting telescopic rod.
5. The adjustable supporting device for tunnel according to claim 4, wherein: the rotary sleeve is provided with two support lugs which are arranged in parallel in the circumferential direction, and a transverse positioning shaft is connected and arranged between the two support lugs.
6. The adjustable supporting device for tunnel according to claim 2, wherein: the upper supporting mechanism and the lower supporting mechanism are the same, and the upper supporting mechanism comprises an upper telescopic loop bar, an upper tray assembly arranged at the end part of the upper telescopic loop bar, a jack assembly arranged in the middle column body and a guide assembly arranged between the upper telescopic loop bar and the middle column body.
7. The adjustable support device for tunnels of claim 6, wherein: the jack assembly comprises a reaction plate arranged in the middle column body, a reinforcing support plate arranged in the middle column body and used for supporting the reaction plate, and a jack which is arranged on the reaction plate and used for driving the upper telescopic sleeve rod to stretch along the axial direction; the guide assembly comprises a sliding rail arranged on the outer side of the middle column body and a pulley which is arranged in the upper telescopic sleeve rod and is used for being matched with the sliding rail; the upper tray assembly comprises an upper tray arranged at the end part of the upper telescopic loop bar and a supporting reinforcing column arranged between the upper tray and the upper telescopic loop bar.
8. The adjustable support device for tunnels of claim 7, wherein: a plurality of sliding rails are uniformly arranged along the circumferential direction of the middle cylinder; an upper tray pin is arranged on the upper tray, and a welding cushion block used for axially limiting the hoop is arranged on the middle column body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123392293.7U CN216922169U (en) | 2021-12-29 | 2021-12-29 | Adjustable supporting device for tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123392293.7U CN216922169U (en) | 2021-12-29 | 2021-12-29 | Adjustable supporting device for tunnel |
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| CN216922169U true CN216922169U (en) | 2022-07-08 |
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| CN202123392293.7U Active CN216922169U (en) | 2021-12-29 | 2021-12-29 | Adjustable supporting device for tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263480A (en) * | 2021-12-29 | 2022-04-01 | 梁波 | Adjustable support middle partition column and construction method |
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2021
- 2021-12-29 CN CN202123392293.7U patent/CN216922169U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263480A (en) * | 2021-12-29 | 2022-04-01 | 梁波 | Adjustable support middle partition column and construction method |
| CN114263480B (en) * | 2021-12-29 | 2024-02-23 | 梁波 | Adjustable support middle partition column and construction method |
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