CN217760051U - Adjustable independent supporting structure under beam - Google Patents
Adjustable independent supporting structure under beam Download PDFInfo
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- CN217760051U CN217760051U CN202221997333.2U CN202221997333U CN217760051U CN 217760051 U CN217760051 U CN 217760051U CN 202221997333 U CN202221997333 U CN 202221997333U CN 217760051 U CN217760051 U CN 217760051U
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Abstract
The utility model relates to a building engineering formwork sets up technical field, in particular to independent bearing structure under roof beam with adjustable, include: the lower end of the vertical rod is connected with an adjustable base, and the upper end of the vertical rod is connected with an adjustable jacking; the adjustable angle support is arranged on the side of the vertical rod; the adjustable angle support adjusts the vertical and horizontal positions through a horizontal adjustable rod and a vertical adjustable rod; and the adjustable jacking is arranged at the upper end part of the adjustable angle support. The vertical adjustable rod of the inverted F-shaped adjustable angle support can be inserted with adjustable depth, and the height can be adjusted by the aid of the adjustable jacking, so that beam bottom templates with different elevations can be supported; the depth of the horizontal adjustable rod transversely inserted into the inverted F-shaped rod piece is adjustable. This structure can carry out standardized production in the mill, can carry out nimble regulation according to house type, floor height and roof beam cross-sectional dimension's change during on-the-spot installation, easy operation, ann tears convenient and fast open, has saved formwork area, has reduced intensity of labour, has promoted site operation efficiency.
Description
Technical Field
The utility model relates to a building engineering formwork sets up technical field, and more specifically says, in particular to independent bearing structure under roof beam with adjustable.
Background
In recent years, fabricated buildings are developed vigorously, but according to project statistics, the construction period and the cost of a partially fabricated building mode have no obvious advantages compared with the traditional cast-in-place mode, which is obviously against the original intention of implementing the fabricated building mode. Among them, the template engineering is a major factor in the construction stage. The reason is that workers spend much time in the construction process to support the formwork.
The design and construction research of a concrete structure support system of an assembly type building (Liu Zhengyong and Gu Hongchao, building safety, no. 4 in 2020, page 11) records that a full-hall scaffold support system is adopted for cast-in-place beams and plates in the assembly type building, the main body of the full-hall scaffold support system is a full-hall support scaffold, and the upper template part can adopt a traditional fastener, square wood and a wood template (or a laminated slab), and can also adopt a mode of an adjustable jacking, square wood (square steel pipe) and a wood template (or a laminated slab). But the height and the position of the frame body are different due to the different section sizes of the cast-in-situ beam. To full hall frame formwork of different floor height and roof beam size, not only need select the raw materials such as steel pipe, steel wood of adaptation size again according to specific size to still need a large amount of manpowers and time just can accomplish and set up, consequently, current full hall scaffold frame support system exists can not adapt to the house type of different floor height and roof beam size, and construction operation is complicated and the inconvenient problem of dismouting.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing an independent bearing structure under roof beam with adjustable to solve the house type complicated changeable, the cast-in-place roof beam size is various, construction operation is complicated, ann tears inconvenient scheduling problem open.
An adjustable under-beam free standing support structure comprising:
the lower end part of the vertical rod is connected with an adjustable base, and the upper end part of the vertical rod is connected with an adjustable top support;
the adjustable angle brace is arranged on the side of the vertical rod; the adjustable angle brace adjusts the vertical and horizontal positions through a horizontal adjustable rod and a vertical adjustable rod;
and the adjustable jacking is arranged at the upper end part of the adjustable angle support.
Further, adjacent vertical rods are tied through horizontal rods and inclined rods.
Furthermore, discs are fixedly connected to the outer wall of the upright stanchion, wherein the two discs are used for connecting the adjustable angle braces; the disc at the bottom is used for connecting the horizontal rod.
Furthermore, the adjustable angle brace comprises an inverted F-shaped rod body, and the inverted F-shaped rod body comprises a vertical rod, a first cross rod and a second cross rod which are connected with the vertical rod and are parallel to each other; the vertical rod is adjustably connected with a vertical adjustable rod; the first cross rod and the second cross rod are respectively and adjustably connected with a horizontal adjustable rod, a lock head is fixedly connected to the end portion of the horizontal adjustable rod, and the lock head is used for being connected with the disc.
Furthermore, a semicircular disc is fixedly connected to one side, back to the first cross rod, of the vertical rod.
Furthermore, the vertical rod and the vertical adjustable rod are both provided with a plurality of through holes, and reinforcing bolts penetrate through the through holes at different positions of the vertical rod and the vertical adjustable rod to form different vertical lengths of the adjustable angle braces; the elevation of the top of the angle support can be adjusted by moving the vertical adjustable rod up and down.
Furthermore, the first cross rod, the second cross rod and the horizontal adjustable rod are all provided with a plurality of through holes, and reinforcing bolts penetrate through the through holes at different positions of the first cross rod, the second cross rod and the horizontal adjustable rod to form different horizontal lengths of the adjustable angle brace; the horizontal length of the adjustable angle brace is adjusted by horizontally moving the position of the horizontal adjustable rod.
Further, the rod diameter of the vertical adjustable rod is smaller than that of the vertical rod; the rod diameter of the horizontal adjustable rod is smaller than that of the first cross rod, and the length and the rod diameter of the first cross rod and the second cross rod are the same.
Furthermore, the disc and the semicircular disc are provided with jacks, and the lock head is positioned on the disc or the semicircular disc through the latches.
Further, adjustable base includes base screw rod, base adjustable nut and chassis, base adjustable nut is used for adjustment control the vertical elevation of adjustable base, adjustable base carries out vertical connection with the pole setting.
Further, adjustable top is held in the palm and is included bracket, top support screw rod and top support adjustable nut, top support adjustable nut is used for adjustment control the vertical elevation of adjustable top support, adjustable top is held in the palm and is carried out vertical connection with the pole setting.
Further, the bracket is a groove body with an upward opening.
Furthermore, connect in two of pole setting adjustable angle brace has the steel pipe through cross fastener rigid coupling, the middle part of steel pipe is by being located the adjustable top of pole setting top holds in the palm the support.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) according to the adjustable under-beam independent supporting structure, the inverted F-shaped adjustable angle brace is an independent supporting structure, the insertion depth of the vertical adjustable rod of the adjustable angle brace can be adjusted, and the height can be adjusted by the aid of the adjustable jacking, so that supporting of beam bottom templates with different elevations is realized; the depth of the horizontal adjustable rod transversely inserted into the inverted F-shaped rod piece is adjustable, and the horizontal adjustable rod and the upright rod are tied to ensure the integral stability of the structure. In the vertical direction, the vertical elevation of the vertical rod is adjusted through an adjustable jacking on the top and an adjustable base on the bottom; the vertical adjustable rod of the adjustable angle brace aligns and adjusts the vertical elevation of the adjustable angle brace through a plurality of through holes. In the horizontal direction, the horizontal length of the adjustable angle support is adjusted through the horizontal adjustable rod.
(2) This independent bearing structure under roof beam with adjustable, the adjustable angle brace of "F" type carries out standardized production in the mill, can carry out nimble regulation according to house type, floor height and roof beam cross-sectional dimension's change during the field installation, easy operation, ann tears convenient and fast open, has saved the formwork area, has reduced intensity of labour, and the support body of whole job site is succinct orderly, and the current smoothness in the workman work progress has promoted site operation efficiency.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a three-dimensional schematic view of an adjustable under-beam independent support structure assembly according to a first embodiment of the present invention;
fig. 2 is a three-dimensional schematic view of a beam lower support structure according to a first embodiment of the present invention;
FIG. 3 is a three-dimensional schematic view of an adjustable corner brace according to a first embodiment of the present invention;
fig. 4 is a three-dimensional schematic view of an adjustable jacking according to a first embodiment of the present invention;
fig. 5 is a three-dimensional schematic view of an adjustable base according to a first embodiment of the present invention;
fig. 6 is a three-dimensional schematic view illustrating the installation of the lower supporting structure of the overweight beam in the second embodiment of the present invention;
in the figure: 1. erecting a rod; 101. a disc;
2. an adjustable angle brace; 201. an inverted F-shaped rod body; 2011. a vertical rod; 2012. a first cross bar; 2013. a second cross bar; 202. a vertically adjustable rod; 203. a horizontally adjustable rod; 204. a lock head; 205. a bolt; 206. a semicircular disc; 207. a through hole; 208. reinforcing the bolt;
3. the adjustable jacking is carried out; 301. a bracket; 302. jacking the screw rod; 303. jacking the adjustable nut;
4. an adjustable base; 401. a base screw; 402. a base adjustable nut; 403. a chassis;
5. a horizontal bar; 6. a diagonal bar; 7. a steel pipe; 8. a cross fastener; 9. a beam template; 10. and (4) square wood.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, the adjustable under-beam independent supporting structure comprises an upright rod 1 and adjustable angle braces 2 arranged on two sides of the upright rod, wherein the upper end parts of the adjustable angle braces 2 are provided with adjustable jacking supports 3, and the adjustable angle braces 2 are adjustable in the horizontal direction and the vertical direction. The lower end of the upright stanchion 1 is connected with an adjustable base 4, and the upper end is connected with an adjustable jacking 3.
In this embodiment, the vertical rod 1 comprises a rod body and a disc 101, and referring to fig. 2, the disc 101 is provided with a socket. The distance between the upper disc of the rod body and the head and the tail of the rod body is 250mm, and the distance between the middle discs is 500mm. The vertical rod is also provided with a standard base, the standard base and the vertical rod are integrally designed, and the size of the standard base is slightly larger than the rod diameter of the vertical rod and is used for connecting the base and the vertical rod.
In this embodiment, the adjustable brace 2 includes an inverted "F" shaped rod 201, and referring to fig. 2 and 3, the inverted "F" shaped rod 201 includes a vertical rod 2011, and a first cross rod 2012 and a second cross rod 2013 connected to and parallel to the vertical rod 2011. Wherein the vertical rod 2011 is adjustably connected with the vertical adjustable rod 202; the first cross bar 2012 and the second cross bar 2013 are respectively and adjustably connected with a horizontal adjustable rod 203, the end of the horizontal adjustable rod 203 is integrally connected with a lock head 204, and the lock head 204 is connected to the disc 101 of the upright 1 through a bolt 205. A semicircular disc 206 is fixedly connected to one side of the vertical rod 2011, which faces away from the first cross rod 2012, and the semicircular disc 206 is used for being connected with a horizontal rod of the mold support frame.
Specifically, the vertical bar 2011 and the vertical adjustable bar 202 are both provided with a plurality of circular through holes 207, and the reinforcing bolts 208 penetrate through the through holes at different positions of the vertical bar and the vertical adjustable bar, which coincide with each other, so as to form different vertical lengths of the adjustable corner supports.
Specifically, the first cross bar 2012, the second cross bar 2013 and the horizontal adjustable bar 203 are also provided with a plurality of circular through holes 207, and the reinforcing bolts 208 penetrate through the through holes at different positions and coinciding with the first cross bar, the second cross bar and the horizontal adjustable bar to form different horizontal lengths of the adjustable angle brace.
In order to facilitate the adjustment of the vertical adjustable rod 202 and the horizontal adjustable rod 203 to their lengths, the rod diameter of the vertical adjustable rod 202 is smaller than that of the vertical rod 2011; the rod diameter of the horizontally adjustable rod 203 is smaller than that of the first cross rod 2012, and the lengths and the rod diameters of the first cross rod 2012 and the second cross rod 2013 are the same.
In this embodiment, the adjustable base 4 includes a base screw 401, a base adjustable nut 402, and a base plate 403, referring to fig. 5, the base adjustable nut 402 is used to adjust and control the vertical elevation of the adjustable base 4, and the adjustable base 4 is vertically connected to the vertical rod 1. The base screw 401 is in threaded connection with the bottom end of the upright rod, and the position is adjusted through the base adjustable nut 402 to adjust the vertical elevation of the adjustable base 4.
The adjustable jacking 3 comprises a bracket 301, a jacking screw 302 and a jacking adjustable nut 303, referring to fig. 4, the jacking adjustable nut 303 is used for adjusting and controlling the vertical elevation of the adjustable jacking 3, and the adjustable jacking 3 is vertically connected with the vertical rod 1; the bracket 301 is a groove body with an upward opening. The top supporting screw 401 is in threaded connection with the top end of the vertical rod and the top end of the vertical adjustable rod 202. The vertical elevation of the adjustable jacking 3 or the vertical elevation of the adjustable corner brace is adjusted by adjusting the position of the adjustable jacking nut 303.
In the embodiment, the steel pipe 7, the cross fastener 8, the horizontal rod 5 and the diagonal rod 6 are all common building construction materials; the mounting sequence of the support structure is that the beam bottom upright stanchion 1 is firstly followed by the adjustable angle brace 2, and then the integrity of the frame body is ensured by the drawknot of the upright stanchion 1 and the diagonal bar 6; the adjustable angle brace 2 is fixed with a lock 204 at its end to the disc 101 of the upright by means of a bolt 205. The inclined rod comprises a rod piece, an end part interface and a bolt, and the rod piece and the end part interface are designed in an integrated mode.
When the adjustable under-beam independent support structure in the embodiment is applied to the working condition that the height of a floor layer is 2950mm, and the beam width of the beam is B multiplied by the beam height H =200mm multiplied by 500mm, the specific implementation mode is as follows:
when the adjustable under-beam independent supporting structure is installed, an upright rod 1 is erected at the bottom of a beam, wherein a disc 101 is fixedly connected to the outer wall of the upright rod, and the two discs 101 positioned above are used for connecting an adjustable angle brace 2; the disc 101 at the bottom is used for connecting a horizontal rod 5 of a formwork support; the two sides of the vertical rods are provided with the adjustable angle braces 2, and the integrity of the frame body is ensured by the adjacent vertical rods through the drawknot of the horizontal rods 5 and the inclined rods 6. The adjustable angle brace 2 is fixed with a lock 204 at its end to the disc 101 of the upright 1 by means of a bolt 205. The steel pipe 7 is placed on the basis of the bottom surface of a square timber 10 below a beam template 9, the steel pipe 7 is connected with the adjustable angle brace 2 through a cross fastener 8, and the bottom of the steel pipe is supported by the adjustable jacking 3.
Vertical adjustable pole 202 is with its perpendicular cartridge in the vertical cavity of montant 2011 of "F" type member 201 when using, through the adjustable angle brace top elevation of the position control that reciprocates vertical adjustable pole 202, and through the supplementary vertical position of adjustment of adjustable jacking 3. The rod diameter of the horizontal adjustable rod 203 is smaller than that of the two cross rods of the inverted F-shaped rod 201, when the adjustable angle brace is used, the horizontal adjustable rod 203 is horizontally inserted into cavities of the two cross rods, and the horizontal length of the adjustable angle brace is adjusted by horizontally moving the position of the horizontal adjustable rod 203; meanwhile, a lock head 204 is designed at the end part of the horizontal adjustable rod 203 and is produced integrally with the rod piece. The vertical rod and the two cross rods of the adjustable angle support are both provided with circular through holes 207, correspondingly, the vertical adjustable rod 202 and the horizontal adjustable rod 203 are also provided with circular through holes, and the positions of the adjustable rods are fixed by the reinforcing bolts 208 penetrating through the circular through holes 207. Wherein, the aperture range of the circular through holes 206 is 10mm-25mm, the interval range thereof is 60mm-100mm, and the number of the through holes is 3-6. The outer wall of the adjustable angle brace 2 is also welded with a semicircular disc 206, the semicircular disc 206 is connected with the horizontal rod 5 of the formwork support, and the semicircular disc 206 is fixedly connected with the adjustable angle brace 2; adjustable angle brace 2 uses bolt 205 to be connected the tapered end of its tip with the disc 101 of the pole setting 1 of roof beam bottom, and the jack has all been seted up to disc 101 and semicircle dish 206, and the tapered end card is fixed spacingly through the bolt behind disc or the semicircle dish.
Two adjustable angle braces 2 are symmetrically connected to two sides of the vertical rod 1, the vertical rods 201 of the two adjustable angle braces 2 are connected through steel pipes 7, and the steel pipes 7 are placed on the basis of the bottom surfaces of the wood 10 below the beams. The steel pipe 7 is connected to the two adjustable angle braces 2 through the cross fastener, and the middle part of the steel pipe 7 falls into the adjustable jacking on the top end of the vertical rod, namely the middle part of the steel pipe 7 is supported by the adjustable jacking on the top end of the vertical rod.
In the embodiment, the adjustable independent support structure under the beam adjusts the vertical elevation of the vertical rod through the adjustable jacking 3 at the top and the adjustable base 4 at the bottom in the vertical direction; the vertical adjustable rod of the adjustable angle brace is aligned and adjusted with the vertical elevation of the adjustable angle brace through a plurality of through holes. In the horizontal direction, the horizontal length of the adjustable angle support is adjusted through a horizontal adjustable rod.
The inverted F-shaped adjustable angle support is an independent support structure, the insertion depth of a vertical adjustable rod of the adjustable angle support can be adjusted, and the height can be adjusted in an auxiliary mode through an adjustable jacking, so that the support of beam bottom templates with different elevations is realized; the depth of the horizontal adjustable rod transversely inserted into the inverted F-shaped rod piece is adjustable, and the horizontal adjustable rod and the upright rod are tied to ensure the integral stability of the structure.
The adjustable angle brace of "F" type carries out standardized production in the mill, can carry out nimble regulation according to house type, floor height and roof beam cross-sectional dimension's change during on-the-spot installation, and easy operation installs and tears convenient and fast open, has saved formwork area, has reduced intensity of labour, and the support body of whole job site is succinct orderly, and current smooth in the workman work progress, has promoted on-the-spot efficiency of construction, guarantees safety control's quality.
The second embodiment is as follows:
when the adjustable beam-lower independent supporting structure is applied to the working condition of higher floor height, for example, the working condition is the floor height of 4600mm, and the beam size beam width of B multiplied by the beam height of H =500mm multiplied by 1000mm, under the working condition of the overweight beam, the specific implementation mode of the adjustable beam-lower independent supporting structure is as follows: referring to fig. 6, beam bottom upright rods 1 are installed firstly, the distance between two rows of upright rods 1 is 300mm, the upright rods are horizontally tied through a horizontal rod 5, and the upright rods are longitudinally tied through the horizontal rod 5 and an inclined rod 6; then the adjustable angle brace 2 is inserted on the upright stanchion 1 and firmly fixed by the bolt 205; and secondly, respectively installing plate bottom formwork supports according to the standard requirements, and if necessary, tying the plate bottom upright rods 1 and the adjustable angle braces 2 through the horizontal rods 5 to ensure the overall stability of the frame body.
This structure passes through tapered end 204 and installs on pole setting disc 101, and it is fixed with the help of bolt 205, change the depth of insertion of adjustable pole in falling "F" type pole piece 201, realize supporting vertical elevation and horizontal distance's regulation, satisfy along with the nimble regulation of roof beam cross-section size change, therefore, the steam generator is simple in operation, construction convenience is swift, convenient and fast is torn open to ann, the formwork area has been saved, the labor intensity is reduced, whole job site support body is succinct orderly, and current smoothness in the workman work progress, the site operation efficiency has been promoted, guarantee safety control's quality.
The structure can be used for carrying out unified and stereotyped production in a die carrier factory, and the produced components are transported to a construction site for use after being inspected to be qualified. When installing a formwork support body, firstly, the upright rod 1 is vertically connected with the adjustable base 4, and further the end joint of the adjustable angle brace 2 is fixed on the upright rod 1, and then the insertion depth of the adjustable top support 3 and the vertical or horizontal adjustable rod is respectively adjusted, so that the installation of the beam bottom support body is completed. Wherein, the adjustable jacking 3 controls the height of the beam bottom or the plate bottom to be uniform, and the adjustable base 4 controls the height of the ground lifting plate to be error-free. The adjustable angle brace in the structure is produced in a factory in a standardized way by using the same formwork support body, is convenient to transport and is high in mounting and dismounting efficiency.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an independent bearing structure under roof beam with adjustable which characterized in that includes:
the lower end of the vertical rod is connected with an adjustable base, and the upper end of the vertical rod is connected with an adjustable jacking;
the adjustable angle brace is arranged on the side of the vertical rod; the adjustable angle support adjusts the vertical and horizontal positions through a horizontal adjustable rod and a vertical adjustable rod;
and the adjustable jacking is arranged at the upper end part of the adjustable corner support.
2. The adjustable under-beam independent support structure according to claim 1, wherein adjacent vertical poles are tied by horizontal and diagonal poles.
3. The adjustable under-beam independent support structure according to claim 2, wherein discs are fixed to the outer walls of the vertical rods, wherein the two discs are used for connecting the adjustable angle braces; the disc at the bottom is used for connecting the horizontal rod.
4. The adjustable under-beam independent support structure according to claim 3, wherein the adjustable angle brace comprises an inverted "F" -shaped rod body, the inverted "F" -shaped rod body comprises a vertical rod, and a first cross rod and a second cross rod which are connected with the vertical rod and are parallel to each other; the vertical rod is adjustably connected with a vertical adjustable rod; the first cross rod and the second cross rod are respectively and adjustably connected with a horizontal adjustable rod, a lock head is fixedly connected to the end portion of the horizontal adjustable rod, and the lock head is used for being connected with the disc.
5. The adjustable under-beam independent support structure according to claim 4, wherein a semicircular disc is fixedly connected to a side of the vertical rod facing away from the first cross rod.
6. The adjustable independent bearing structure under beam as claimed in claim 5, wherein the vertical rods and the vertical adjustable rods are provided with a plurality of through holes, and the through holes at different positions of the vertical rods and the vertical adjustable rods are penetrated by the reinforcing bolts to form different vertical lengths of the adjustable angle braces.
7. The adjustable independent support structure under beam as claimed in claim 5, wherein the first cross bar, the second cross bar and the horizontal adjustable bar are provided with a plurality of through holes, and the through holes at different positions of the first cross bar, the second cross bar and the horizontal adjustable bar are penetrated by reinforcing bolts to form different horizontal lengths of the adjustable angle brace.
8. The adjustable under-beam independent support structure according to claim 1, wherein the adjustable base comprises a base screw, a base adjustable nut and a chassis, the base adjustable nut is used for adjusting and controlling the vertical elevation of the adjustable base, and the adjustable base is vertically connected with the vertical rod.
9. The adjustable under-beam independent supporting structure according to claim 1, wherein the adjustable jacking comprises a bracket, a jacking screw and a jacking adjustable nut, the jacking adjustable nut is used for adjusting and controlling the vertical elevation of the adjustable jacking, and the adjustable jacking is vertically connected with the vertical rod.
10. The adjustable under-beam independent supporting structure according to claim 1, wherein two of the adjustable angle braces connected to the vertical rod are fixedly connected with steel pipes, and the steel pipes are supported by adjustable top supports at the top ends of the vertical rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221997333.2U CN217760051U (en) | 2022-08-01 | 2022-08-01 | Adjustable independent supporting structure under beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221997333.2U CN217760051U (en) | 2022-08-01 | 2022-08-01 | Adjustable independent supporting structure under beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217760051U true CN217760051U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221997333.2U Active CN217760051U (en) | 2022-08-01 | 2022-08-01 | Adjustable independent supporting structure under beam |
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| Country | Link |
|---|---|
| CN (1) | CN217760051U (en) |
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2022
- 2022-08-01 CN CN202221997333.2U patent/CN217760051U/en active Active
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