CN210766366U - Unit strong anchor prepressing type synchronous displacement telescopic device - Google Patents
Unit strong anchor prepressing type synchronous displacement telescopic device Download PDFInfo
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- CN210766366U CN210766366U CN201920720090.XU CN201920720090U CN210766366U CN 210766366 U CN210766366 U CN 210766366U CN 201920720090 U CN201920720090 U CN 201920720090U CN 210766366 U CN210766366 U CN 210766366U
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Abstract
The utility model discloses a unit strong anchor prepressing type synchronous deflection expansion device, include: moving comb plate and fixed comb plate that arrange in opposite directions, control the anchor subassembly, the anchor subassembly includes along vertical evenly distributed's vertical steel sheet, vertical steel sheet upper portion links firmly with the welding of fixed comb plate with moving comb plate, the lower part links firmly with the welding of the pre-buried muscle of bridge, be provided with the counter bore on the comb plate, the dust guard about being provided with under the comb plate, set up two at least groups transverse distribution's the support piece of compriseing the channel-section steel and the ebonite strip that imbeds in the channel-section steel on the vertical steel sheet of lower dust guard and the pre-buried subassembly in the right side along between, be provided with screw rod and the nut of excelling in the counter bore, the screw rod below of excelling links firmly with horizontal muscle and crooked reinforcing bar welding simultaneously, crooked reinforcing bar below links. Because the lower end of the high-strength screw rod is welded with the transverse rib and the embedded rib for the second time, the shear fatigue of the screw rod caused by the sunk hole of the telescopic panel is overcome, and the flexible panel can be effectively prevented from being detached from the welding line by utilizing the prestress of the screw rod.
Description
Technical Field
The utility model relates to a unit strong anchor prepressing type synchronous shifting bridge expansion device belongs to bridge engineering building technical field.
Background
The bridge expansion device is arranged at the weak part of the bridge deck at the beam end, and the quality and the performance of the bridge expansion device directly influence the durability of the whole bridge. Because the expansion device is always affected by various natural environmental erosion, the expansion device has the problems of multi-directional displacement (namely three-directional displacement, expansion and rotation) and the like caused by cold and hot expansion, longitudinal swing and tilting, transverse swing and relative twisting and the like in the use process. Thus, the overall requirements for the telescopic device include: the waterproof performance is good, flexible and each component durability in the device is good, especially the overall structure and the installation accuracy of telescoping device need reach the design requirement to noise is low, vibrations are little when the vehicle is driven, thereby realizes that the telescoping device wholly operates well, long service life and maintenance are convenient.
The existing comb-tooth type bridge expansion device mainly comprises two types of anchoring structures, wherein one type of anchoring structure is a bolt-free anchoring structure, and the other type of anchoring structure is a bolt-anchored structure.
The bolt-free anchoring structure is characterized in that a telescopic panel and an anchoring system are welded into an integral unit, the anchoring system of the integral unit is welded with bridge abutment embedded steel bars during installation, concrete is poured, the telescopic panel is easy to cause welding fatigue to cause welding failure when a vehicle impacts the telescopic panel, and the problem of headache which is difficult to completely solve is always solved completely, for example, the invention discloses a comb plate bridge telescopic device "
(201010595118.5) the disclosed form of integral unit welded construction.
The other type of common use is that a plurality of counter bores are machined on a telescopic panel in a structural form of bolt anchoring, a screw assembly and an abutment embedded steel bar are welded according to the positions of the counter bores during installation, the telescopic panel is covered after concrete is poured, nuts are screwed in the counter bores of the telescopic panel, and a vehicle impacts the telescopic panel easily to cause shear fatigue to cause the screw to be cut off, which is also a technical problem that the structural form cannot avoid.
Disclosure of Invention
The utility model aims at overcoming the background art not enough, design a unit strong anchor pre-compaction formula telescoping device that shifts in step, flexible panel welds into whole unit with anchoring system, and machine tooling a plurality of counter bore at flexible panel, the screw rod that excels in of assembly in the counter bore, the screw rod lower extreme welds with anchoring system, the anchoring system of whole unit formula again with abutment embedded steel bar welding when the installation, and with screw rod lower extreme and abutment embedded steel bar welding in step, concreting, treat that concrete health preserving intensity satisfies the back, screw up the nut behind the lock washer on flexible panel counter bore endotheca, and pressurize with the wind cannon, give the certain prestressing force of screw rod. The utility model discloses technical scheme utilizes the shear fatigue of flexible panel counter bore to the screw rod to weld whole unit and the stability of the rigidity anchor of abutment embedded bar, and the prestressing force that utilizes the screw rod in reverse can effectively prevent flexible panel's desoldering, and the two is afterburning each other, mutual protection, can effectively solve two kinds of anchor structures of current broach type bridge telescoping device and can not solve the problem of welding fatigue and shear fatigue in step. On the other hand, the utility model discloses technical scheme utilizes the hard rubber support to support the broach still at the front end of fixed fishback, plays the effect with the soft gram is rigid, effectively cushions the goods and carries the impact force and reduce the impulsive noise.
The technical scheme of the utility model is that: a unit strong anchor prepressing type synchronous displacement telescopic device is of a unit type structure, and each unit comprises: the movable comb plate (1) and the fixed comb plate (2), the left anchoring component (3) and the right anchoring component (4) are oppositely arranged; counter bores are uniformly distributed on the movable comb plate (1) and the fixed comb plate (2), the longitudinal direction is set along the vehicle running direction on the bridge, when the movable comb plate and the fixed comb plate are installed on site, all units are transversely arranged on the bridge expansion joint in parallel, and transverse ribs (14) which are transversely distributed are also arranged among all units;
an upper dust guard (5) and a lower dust guard (6) which are partially crossed and attached together are sequentially arranged below the movable comb plate (1) and the fixed comb plate (2); the left side of the upper dustproof plate (5) is fixedly connected with the movable comb plate (1), the right side of the lower dustproof plate (6) is fixedly connected with the right anchoring component (4), and the left side of the lower dustproof plate (6) is fixedly connected with the left anchoring component (3);
the left anchoring assembly (3) and the right anchoring assembly (4) comprise at least five vertical steel plates which are uniformly distributed in the longitudinal direction, the upper parts of the vertical steel plates are fixedly welded with the bottom surfaces of the movable comb plate (1) and the fixed comb plate (2), and the lower parts of the vertical steel plates are fixedly welded with pre-buried ribs (13) reserved on the bridge;
holes are processed on the vertical steel plates and are used for penetrating through transverse ribs (14) which are transversely distributed and guiding high-strength concrete poured during field installation to be uniformly distributed; the method is characterized in that:
between the upright steel sheet upper edge of following and right anchor subassembly (4) below dust guard (6) down, be provided with two at least groups transverse distribution's support piece according to flexible volume size, support piece includes: the dustproof structure comprises a channel steel (8) and support bands (7), wherein the upper parts of the support bands (7) are in close contact with the lower surface of a lower dustproof plate (6), the support bands (7) are embedded into the channel steel (8), the channel steel (8) is fixedly connected with a vertical steel plate in a welding mode, and the support bands (7) are made of hard rubber materials; the beneficial effects are as follows: the hard rubber belt plays a role of soft-gram stiffness, reduces the load impact force and provides a synchronous displacement effect for the telescopic device.
And a first slurry baffle (9) and a second slurry baffle (10) are further arranged between the lower surface of the lower dust guard (6) and the upper part of the right anchoring component (4), and the lower surfaces of the first slurry baffle (9) and the second slurry baffle (10) are fixedly connected with the upper edge of the vertical steel plate of the right anchoring component (4) in a welding manner.
As above, a unit strong anchor prepressing type synchronous deflection expansion device is characterized in that: remove fishback (1) and fixed fishback (2) and upright steel sheet between be provided with high strength screw rod (17), high strength screw rod (17) upper end is passed through the nut and is connect soon in the counter bore, during on-the-spot installation, horizontal muscle (14) both with upright steel sheet welding link firmly, link firmly with each high strength screw rod (17) welding again.
As above, a unit strong anchor prepressing type synchronous deflection expansion device is characterized in that: the lower end of the high-strength screw rod (17) is provided with a bent steel bar (18), when the high-strength screw rod is installed on site, the upper portion of the bent steel bar (18) is fixedly connected with the high-strength screw rod (17) in a welding mode, and the lower portion of the bent steel bar (18) is fixedly connected with a pre-buried rib (13) preset at the end portion of the bridge in a welding mode. The beneficial effects are as follows: because the lower end of the high-strength screw rod is welded with the transverse rib and the embedded rib for the second time, the shear fatigue of the counter bore of the comb plate to the screw rod is overcome by utilizing the stability of rigid anchoring of the welding integral unit and the abutment embedded rib, and meanwhile, the expansion panel is prevented from being detached by matching the prestress of the high-strength screw rod in the counter bore, so that the problem that the welding fatigue and the shear fatigue cannot be synchronously solved by two types of anchoring structures of the conventional comb-tooth bridge expansion device is solved, and the defects of the traditional technology are avoided.
Preferably, upright steel plates supporting the left and right anchoring assemblies (3, 4) or alternatively, a ring-shaped rebar structure.
Furthermore, the vertical steel plates supporting the left anchoring assembly (3) and the right anchoring assembly (4) or the welded combined structure with the front end steel plate and the rear end bent steel bars instead are adopted.
The utility model discloses during the on-the-spot installation of unit strong anchor pre-compaction formula telescoping device that shifts in step, earlier with each upright steel sheet and abutment embedded reinforcement welding of whole unit to in step will excel in the screw rod lower extreme with crooked reinforcing bar transition and abutment embedded reinforcement secondary welding, with the intensity that links firmly of strengthening high-strength screw rod and abutment, the concrete of watering again, treat that concrete health preserving intensity satisfies the back, screw up the nut behind the lock washer on the counter bore endotheca of fishback plate, and pressurize with the wind big gun.
The utility model has the advantages that: the shear fatigue of the counter bore of the telescopic panel to the screw rod is overcome by utilizing the stability of rigid anchoring of the welding integral unit and the bridge abutment embedded rib, the desoldering of the telescopic panel can be effectively prevented by utilizing the prestress of the screw rod in reverse, the two mutually apply force and protect each other, and the basic problem that the existing comb plate telescopic device is easy to fatigue can be effectively solved.
Drawings
FIG. 1 is a top view of the "one kind of unit strong anchor pre-pressing type synchronous displacement telescopic device" of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a sectional view showing a structure of a bent reinforcing bar.
The notation in the figure is:
1-remove fishback, 2-fixed fishback, 3-left anchor subassembly, 4-right anchor subassembly, 5-go up the dust guard, 6-dust guard down, 7-support area, 8-channel-section steel, 9-fender board one, 10-fender board two, 11-the high-strength concrete who pours during the installation, 12-road surface pitch, 13-the muscle that buries, 14-horizontal muscle, 15-waterproof component, 16-bridge tip component, 17-the screw rod that excels in, 18-crooked reinforcing bar.
Detailed Description
Embodiments of the invention will be further explained with reference to the drawings, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below are exemplary and are intended to be illustrative, but not limiting, of the present invention, and any modifications, equivalents, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention, which are not detailed in the present technical solution, and are known in the art.
As shown in fig. 1 and fig. 2, the utility model relates to a unit strong anchor prepressing type synchronous displacement telescopic device, which is of a unit structure, wherein each unit comprises: the movable comb plate 1 and the fixed comb plate 2 are oppositely arranged, and the left anchoring component 3 and the right anchoring component 4 are oppositely arranged; counter bores are uniformly distributed on the movable comb plate 1 and the fixed comb plate 2, the longitudinal direction is set along the driving direction of a vehicle on a bridge, when the movable comb plate and the fixed comb plate are installed on site, all units are transversely arranged on the expansion joint of the bridge in parallel, and transverse ribs 14 which are transversely distributed are also arranged among all units.
An upper dust guard 5 and a lower dust guard 6 which are attached together are sequentially arranged below the movable comb plate 1 and the fixed comb plate 2; the left side of going up dust guard 5 links firmly with removal fishback 1, and the right side of lower dust guard 6 links firmly with fixed fishback 2.
The left anchoring component 3 and the right anchoring component 4 comprise at least five vertical steel plates which are longitudinally and uniformly distributed, each vertical steel plate is fixedly connected with the bottom surfaces of the movable comb plate 1 and the fixed comb plate 2 in a welding mode respectively, and the lower portion of each vertical steel plate is fixedly connected with a pre-buried rib 13 reserved on the bridge in a welding mode respectively.
The vertical steel plate is provided with holes, and the holes are used for penetrating through the transverse ribs 14 which are transversely distributed and guiding high-strength concrete poured during installation to be uniformly distributed.
The embodiment of the utility model provides an in, between the upright steel sheet of lower 6 following of dust guards and right anchor subassembly 4 goes up the edge, be provided with two group transverse distribution's support piece according to flexible volume size, support piece includes: channel-section steel 8 and support area 7, support 7 upper portions of area and the lower surface in close contact with of dust guard 6 down, support 7 embedding channel-section steel 8 in, channel-section steel 8 links firmly with the steel sheet welding of standing vertically, support area 7 is hard rubber material. The hard rubber belt plays a role of soft-gram stiffness, reduces the load impact force and provides a synchronous displacement effect for the telescopic device.
And a first slurry baffle 9 and a second slurry baffle 10 are further arranged between the lower surface of the lower dust-proof plate 6 and the upper part of the right anchoring component 4, and the lower surfaces of the first slurry baffle 9 and the second slurry baffle 10 are fixedly connected with the upper edge of the vertical steel plate of the right anchoring component 4 in a welding manner.
As shown in fig. 2, high-strength screws 17 are arranged between the movable comb plate 1 and the fixed comb plate 2, and the vertical steel plate, the upper ends of the high-strength screws 17 are screwed in the counter bores through nuts, and when the high-strength screws are installed on site, the transverse ribs 14 are fixedly connected with the vertical steel plate in a welding mode, and are fixedly connected with the high-strength screws 17 in a welding mode.
Preferably, more than two transverse support pieces distributed in parallel can be arranged according to the actual expansion amount of the gap of the bridge.
Referring to fig. 2, the right side of the first pulp blocking plate 9 is bent, and the first pulp blocking plate 9 and the second pulp blocking plate 10 are fixedly connected with the bottom edge of the channel steel 8 and the upper edge of the vertical steel plate of the right anchoring assembly 4 in a welding mode respectively, so that the purpose of blocking pulp is achieved.
In the embodiment of the utility model provides an in, supporting belt 7 and choosing to be rubber support, the upper portion that supports belt 7 is upwards bellied circular-arc or planar. The length of the support bands 7 is set to be approximately equal to the width of the moving comb plate 1 or the fixed comb plate 2.
In the embodiment of the utility model, remove fishback 1 and fixed fishback 2 and left anchor subassembly 3 and right anchor subassembly 4 between connected mode for the welding links firmly. Namely: the vertical steel plates and the horizontal vertical plates of the movable comb plate 1 and the left anchoring component 3 are welded in advance in a processing plant, and the vertical steel plates of the fixed comb plate 2 and the right anchoring component 4 are welded and assembled into an integral unit in a factory. Then, uniformly distributed countersunk holes are processed on the comb plates of the integral unit, correspondingly, high-strength screws 17 are arranged in the countersunk holes, when the comb plates are installed on site, the left anchoring component 3 and the right anchoring component 4 of the integral unit are respectively welded with the embedded ribs 13 on two sides of the abutment, then the lower ends of the high-strength screws 17 are welded with the transverse ribs 14, then concrete is poured, after the curing strength of the concrete meets the requirement, the nuts are screwed after the anti-loose washers are sleeved in the countersunk holes of the comb plates, and air cannons are used for pressurizing.
Referring to fig. 3, for the utility model discloses be different from another embodiment of fig. 2, high strength screw 17 lower extreme on the one hand with horizontal muscle 14 welding links firmly, and on the other hand, in high strength screw 17's below, still is provided with crooked reinforcing bar 18, with crooked reinforcing bar 18's upper end and the welding of high strength screw 17 lower extreme during on-the-spot installation, crooked reinforcing bar 18's lower extreme welds with pre-buried muscle 13 again. The secondary welding mode of transition of the lower end of the high-strength screw 17 through the bent steel bar 18 and the abutment embedded bar 13 can strengthen the fixed connection strength of the high-strength screw 17 and the abutment, concrete is poured, after the concrete curing strength meets the requirement, the nuts are screwed after the anti-loose washers are sleeved in the counter bores of the comb plates, and air cannons are used for pressurizing.
It should be noted that: and the upright steel plates support the left anchoring assembly and the right anchoring assembly, or the upright steel plates are replaced by annular steel bar structures, and the shape of the annular steel bars is consistent with the outer edge size of the upright steel plates.
Furthermore, the upright steel plates supporting the left anchoring assembly and the right anchoring assembly are of a welded combined structure with a front end steel plate instead of a front end steel plate and a rear end of a bent steel bar, the front end is close to one end of the bridge expansion joint, and the bent steel bar is fixedly connected with the front end steel plate in a welded mode.
The utility model relates to a unit strong anchor pre-compaction formula telescoping device that shifts in step is removing under the prerequisite that fishback and fixed fishback and anchor system welded into whole unit, is removing the fishback and fixed fishback in addition and is processing a plurality of counter bores, the screw rod that excels in that is equipped with in it, the screw rod lower extreme that excels in and anchor system secondary welding have overcome two types of anchor structures of current fishback bridge telescoping device and can not solve the problem of welding fatigue and shearing fatigue in step. The shear fatigue of the counterbores of the telescopic panels to the screws is overcome by utilizing the stability of rigid anchoring of the welding integral unit and the bridge abutment embedded ribs, meanwhile, the prestress of the high-strength screws in the counterbores is matched to prevent the telescopic panels from being detached from welding, and the welding integral unit and the bridge abutment embedded ribs supplement each other to avoid the defects of the traditional technology.
The embodiment of the utility model provides an in, constitute each unit strong anchor prepressing type synchronous shift telescoping device's removal fishback and fixed fishback's transverse width and be 1M at least, multiunit unit strong anchor prepressing type synchronous shift bridge telescoping device segmentation construction in proper order, and the unit strong anchor prepressing type synchronous shift bridge telescoping device who finally accomplishes whole road surface width is whole, and the telescoping device is then tailor according to actual required width closest to crashproof wall department.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," "secured," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Claims (5)
1. A unit strong anchor prepressing type synchronous displacement telescopic device is of a unit type structure, and each unit comprises: the movable comb plate (1) and the fixed comb plate (2), the left anchoring component (3) and the right anchoring component (4) are oppositely arranged; counter bores are uniformly distributed on the movable comb plate (1) and the fixed comb plate (2), the longitudinal direction is set along the vehicle running direction on the bridge, when the movable comb plate and the fixed comb plate are installed on site, all units are transversely arranged on the bridge expansion joint in parallel, and transverse ribs (14) which are transversely distributed are also arranged among all units;
an upper dust guard (5) and a lower dust guard (6) which are partially crossed and attached together are sequentially arranged below the movable comb plate (1) and the fixed comb plate (2); the left side of the upper dustproof plate (5) is fixedly connected with the movable comb plate (1), the right side of the lower dustproof plate (6) is fixedly connected with the right anchoring component (4), and the left side of the lower dustproof plate (6) is fixedly connected with the left anchoring component (3);
the left anchoring assembly (3) and the right anchoring assembly (4) comprise at least five vertical steel plates which are uniformly distributed in the longitudinal direction, the upper parts of the vertical steel plates are fixedly welded with the bottom surfaces of the movable comb plate (1) and the fixed comb plate (2), and the lower parts of the vertical steel plates are fixedly welded with pre-buried ribs (13) reserved on the bridge;
holes are processed on the vertical steel plates and are used for penetrating through the transverse ribs (14) which are transversely distributed and guiding high-strength concrete poured during installation to be uniformly distributed; the method is characterized in that:
between the upright steel sheet upper edge below dust guard (6) and right anchor subassembly (4) down, be provided with the support piece of two at least groups transverse distribution, support piece includes: the dustproof structure comprises a channel steel (8) and support bands (7), wherein the upper parts of the support bands (7) are in close contact with the lower surface of a lower dustproof plate (6), the support bands (7) are embedded into the channel steel (8), the channel steel (8) is fixedly connected with a vertical steel plate in a welding mode, and the support bands (7) are made of hard rubber materials;
and a first slurry baffle (9) and a second slurry baffle (10) are further arranged between the lower surface of the lower dust guard (6) and the upper part of the right anchoring component (4), and the lower surfaces of the first slurry baffle (9) and the second slurry baffle (10) are fixedly connected with the upper edge of the vertical steel plate of the right anchoring component (4) in a welding manner.
2. The unit strong anchor pre-pressing type synchronous displacement telescopic device as claimed in claim 1, wherein: remove fishback (1) and fixed fishback (2) and upright steel sheet between be provided with high strength screw rod (17), high strength screw rod (17) upper end is passed through the nut and is connect soon in the counter bore, during on-the-spot installation, horizontal muscle (14) both with upright steel sheet welding link firmly, link firmly with each high strength screw rod (17) welding again.
3. The unit strong anchor pre-pressing type synchronous displacement telescopic device as claimed in claim 2, wherein: the lower end of the high-strength screw rod (17) is provided with a bent steel bar (18), when the high-strength screw rod is installed on site, the upper portion of the bent steel bar (18) is fixedly connected with the high-strength screw rod (17) in a welding mode, and the lower portion of the bent steel bar (18) is fixedly connected with a pre-buried rib (13) preset at the end portion of the bridge in a welding mode.
4. The unit strong anchor pre-pressing type synchronous displacement telescopic device as claimed in claim 1, wherein: and the vertical steel plate supports the left anchoring assembly (3) and the right anchoring assembly (4), or the vertical steel plate is replaced by an annular steel bar structure, and the shape of the annular steel bar is the same as the outer edge size of the vertical steel plate.
5. The unit strong anchor pre-pressing type synchronous displacement telescopic device as claimed in claim 1, wherein: and the vertical steel plates support the left anchoring assembly (3) and the right anchoring assembly (4), or the vertical steel plates are replaced by front-end steel plates, and the rear ends of the vertical steel plates are welded combined structures of bent steel bars.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920720090.XU CN210766366U (en) | 2019-05-20 | 2019-05-20 | Unit strong anchor prepressing type synchronous displacement telescopic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920720090.XU CN210766366U (en) | 2019-05-20 | 2019-05-20 | Unit strong anchor prepressing type synchronous displacement telescopic device |
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| CN210766366U true CN210766366U (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111809514A (en) * | 2020-07-31 | 2020-10-23 | 成都市长大路桥科技有限公司 | Riding type comb plate expansion device |
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2019
- 2019-05-20 CN CN201920720090.XU patent/CN210766366U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111809514A (en) * | 2020-07-31 | 2020-10-23 | 成都市长大路桥科技有限公司 | Riding type comb plate expansion device |
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Effective date of registration: 20230423 Address after: 430223 Yangguang Chuanggu, Jiangxia Avenue, Jiangxia District, Wuhan City, Hubei Province Patentee after: WUHAN NAIJIU TELESCOPIC ENGINEERING CO.,LTD. Address before: 430060 Building 11, Building 104, Jiulongjing Community, Huanghelou Street, Wuchang District, Wuhan City, Hubei Province Patentee before: Liu Liyuan |