CN112376422A - Cable force self-balancing system for main cable of suspension bridge - Google Patents
Cable force self-balancing system for main cable of suspension bridge Download PDFInfo
- Publication number
- CN112376422A CN112376422A CN202011277479.5A CN202011277479A CN112376422A CN 112376422 A CN112376422 A CN 112376422A CN 202011277479 A CN202011277479 A CN 202011277479A CN 112376422 A CN112376422 A CN 112376422A
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- cable
- saddle
- cable saddle
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of suspension bridges, and provides a suspension bridge main cable force self-balancing system. This suspension bridge main push-towing rope power self-balancing system includes: the cable saddle mechanism comprises a cable saddle, a rolling shaft and a main cable, wherein the cable saddle is arranged on the rolling shaft, the main cable is arranged on the cable saddle, and the cable saddle can slide along the direction of the main cable; the limiting mechanism comprises a first limiting stop block and a second limiting stop block; the brake mechanism comprises a brake, and the first side and the second side of the cable saddle are respectively provided with a brake which is correspondingly arranged. According to the invention, the cable saddle is arranged between the first limit stop and the second limit stop and moves on the rolling shaft by respectively arranging the first limit stop and the second limit stop at two ends of the cable saddle, so that the unbalance force generated by the main cable is adjusted; through setting up the stopper, realize the stopper to the braking effect of cable saddle, prevent that the cable saddle from sliding under the influence of external factor, improved the self-balancing regulation effect of cable saddle main push-towing rope, improve the security of cable tower.
Description
Technical Field
The invention relates to the technical field of suspension bridges, in particular to a main cable force self-balancing system of a suspension bridge.
Background
The suspension bridge cable tower is a compression bending structure mainly under compression, wherein longitudinal bending moment is mainly generated by unbalanced horizontal force of main cables on two sides of a main cable saddle, the longitudinal bending moment is increased along with increase of span and tower height, and the size and the basic scale of the cable tower are controlled. How to effectively reduce the difference of unbalanced horizontal cable force transmitted by a main cable to a cable tower and realize the self-balance of cable force generated by the main cable is a core technical problem in a large-span suspension bridge structure.
Disclosure of Invention
The invention aims to at least solve one technical problem in the prior art, and provides a suspension bridge main cable force self-balancing system, which realizes the release of unbalanced horizontal force on the tower top in a cable saddle sliding mode, and is provided with a braking mechanism to realize controllable constraint.
According to the embodiment of the invention, the self-balancing system of the cable force of the main cable of the suspension bridge comprises:
the cable saddle mechanism comprises a cable saddle, a rolling shaft and a main cable, wherein the cable saddle is arranged on the rolling shaft in a sliding manner along the direction from the first end to the second end of the cable saddle, and the main cable is arranged on the upper side of the cable saddle along the direction from the first end to the second end of the cable saddle;
the limiting mechanism comprises a first limiting stop block and a second limiting stop block, the first limiting stop block is arranged at the first end of the cable saddle, and the second limiting stop block is arranged at the second end of the cable saddle;
the brake mechanism, brake mechanism includes the stopper, the first side and the second side of cable saddle are equipped with corresponding setting respectively the stopper.
According to the suspension bridge main cable force self-balancing system provided by the embodiment of the invention, the cable saddle is arranged between the first limit stop and the second limit stop and moves on the roller by respectively arranging the first limit stop and the second limit stop at the two ends of the cable saddle, so that the unbalanced force generated by the main cable is adjusted; through setting up the stopper, realize the stopper to the braking effect of cable saddle, prevent that the cable saddle from sliding under the influence of external factors, improved the self-balancing and adjusted the effect, improve the security of cable tower.
According to an embodiment of the present invention, the brake mechanism further includes a wind speed sensor provided on an upper side of the cable saddle, the wind speed sensor being connected to the brake.
According to one embodiment of the present invention, the axis of the roller is perpendicular to the direction from the first end to the second end of the cable saddle, and the plurality of rollers are disposed at intervals along the direction from the first end to the second end of the cable saddle.
According to an embodiment of the present invention, the cable saddle mechanism further includes a lower carrier plate and an upper carrier plate, the rollers, the first limit stop, the second limit stop and the brake are all disposed on an upper side of the lower carrier plate, the upper carrier plate is slidably disposed on upper sides of the plurality of rollers along a direction from a first end to a second end of the cable saddle, the cable saddle is disposed on an upper side of the upper carrier plate, and the cable saddle and the upper carrier plate move synchronously.
According to an embodiment of the invention, the first limit stop and the second limit stop are respectively arranged at two ends of the upper bearing plate, and the output end of the brake is connected with the cable saddle.
According to one embodiment of the invention, the brake mechanism further comprises a damper, the damper is arranged on the lower bearing plate, and the output end of the damper is connected with the upper bearing plate.
According to one embodiment of the invention, the upper side of the cable saddle is provided with a cable-receiving groove arranged along the direction from the first end to the second end of the cable saddle, and the main cable is arranged in the cable-receiving groove.
According to one embodiment of the invention, the upper notch of the cable-accommodating groove is provided with a plurality of longitudinal bars arranged at intervals along the direction from the first end to the second end of the cable saddle, and the plurality of longitudinal bars are all perpendicular to the main cable.
According to one embodiment of the invention, the cable saddle is provided with a plurality of vertical stiffeners in the direction from the first end to the second end of the cable saddle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a suspension bridge main cable force self-balancing system according to an embodiment of the invention;
fig. 2 is a front view of a suspension bridge main cable force self-balancing system according to an embodiment of the invention.
Reference numerals:
110. a cable saddle; 120. a roller; 130. a main cable; 140. a lower deck plate; 150. an upper deck plate; 160. a cable-taking groove; 170. a longitudinal bar; 180. vertical stiffening;
210. a first limit stop; 220. a second limit stop;
310. a brake; 320. a clamping block; 330. a damper; 340. and a hydraulic cylinder.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "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 in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. 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.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a suspension bridge main cable force self-balancing system, including:
a saddle mechanism including a saddle 110, a roller 120, and a main cable 130, wherein the saddle 110 is slidably disposed on the roller 120 in a direction from a first end to a second end of the saddle 110, and the main cable 130 is disposed on an upper side of the saddle 110 in the direction from the first end to the second end of the saddle 110;
the limiting mechanism comprises a first limiting stop 210 and a second limiting stop 220, the first limiting stop 210 is arranged at the first end of the cable saddle 110, and the second limiting stop 220 is arranged at the second end of the cable saddle 110;
the braking mechanism comprises a brake 310, and the brake 310 is correspondingly arranged on the first side and the second side of the cable saddle 110. It is understood that the bottom side of the saddle 110 is provided with a plurality of rollers 120, and the plurality of rollers 120 are uniformly arranged at equal intervals in the direction from the first end to the second end of the saddle 110, i.e., from left to right. The bottom surface of the saddle 110 is placed on the plurality of rollers 120, so that the saddle 110 can slide back and forth left and right. The main cable 130 is disposed at the upper side, i.e., the top, of the cable saddle 110, the main cable 130 is disposed along the direction from the first end to the second end of the cable saddle 110, and generates a downward pressure on the cable saddle 110, when the pressure generated by the main cable 130 on the cable saddle 110 is unbalanced left and right, the cable saddle 110 is adjusted to move left or right on the roller 120, so that the cable forces generated by the main cables 130 at both sides are in a balanced state again, the maximum horizontal force of the cable tower is the rolling friction force of the cable saddle 110, and the horizontal shear force of the cable tower can be greatly reduced, thereby achieving the purposes of reducing the longitudinal bending moment of the cable tower and controlling the size and the foundation scale of the.
Further, the first limit stopper 210 is disposed at a first end, i.e., the left end, of the cable saddle 110, and the second limit stopper 220 is disposed at a second end, i.e., the right end, of the cable saddle 110, so as to limit the cable saddle 110 and the roller 120 and prevent the cable saddle 110 from slipping off relative to the roller 120.
Further, the first side and the second side, i.e., the front side and the rear side, of the cable saddle 110 are respectively provided with the brakes 310, and the brakes 310 at both sides of the cable saddle 110 are correspondingly provided. That is, when the cable saddle 110 is affected by external factors (e.g., strong wind), the brakes 310 on both sides of the cable saddle 110 are synchronously applied to the cable saddle 110, so as to clamp the cable saddle 110, prevent the cable saddle 110 from moving, and increase the safety factor. The number of the brakes 310 on both sides of the saddle 110 may be set according to the left and right size of the saddle 110. In this embodiment, two brakes 310 are respectively disposed on two sides of the cable saddle 110 to ensure the stability of the clamping brake.
It should be noted that the output end of the brake 310 is provided with a telescopic shaft, the telescopic shaft is provided with two clamping blocks 320, and the clamping position of the clamping block 320 is adjusted by extending the telescopic shaft, so that the clamping range of the corresponding two brakes 310 on the cable saddle 110 is increased, and the clamping stability is improved; the clamping position of the clamping block 320 relative to the cable saddle 110 is adjusted by shortening the telescopic shaft, so that the clamping force of the two corresponding brakes 310 on the cable saddle 110 is improved, and the braking effect is ensured.
According to the self-balancing system of the cable saddle 110 and the main cable 130 of the embodiment of the invention, the cable saddle 110 is moved between the first limit stopper 210 and the second limit stopper 220 and on the roller 120 by respectively arranging the first limit stopper 210 and the second limit stopper 220 at the two ends of the cable saddle 110, so that the unbalanced force generated by the main cable 130 is adjusted; through setting up stopper 310, realize the braking effect of stopper 310 to cable saddle 110, prevent that cable saddle 110 from sliding under the influence of external factor, improved the self-balancing regulation effect of cable saddle 110 main push-towing rope 130, improve the security of cable tower.
According to an embodiment of the present invention, the braking mechanism further includes a wind speed sensor provided on an upper side of the cable saddle 110, the wind speed sensor being connected to the brake 310. It is understood that the wind speed sensor is provided at an upper side, i.e., a top side, of the saddle 110 to sense wind at a position of the saddle 110. The wind speed sensor is connected with the brake 310, and when the wind power detected by the wind speed sensor is greater than or equal to a preset safety value in the brake 310, the brake 310 performs clamping braking on the cable saddle 110; when the wind force detected by the wind speed sensor is less than the safety value preset in the brake 310, the brake 310 does not work, and the cable saddle 110 is adjusted on the roller 120 in a self-balancing movement manner. It should be noted that the preset safety value in the brake 310 is set according to the installation area and the overall size of the saddle 110. For example, if the installation area has a lot of strong wind throughout the year, the preset safety value is set to be relatively small, so as to improve the safety.
According to an embodiment of the present invention, the axis of the roller 120 is perpendicular to the direction from the first end to the second end of the saddle 110, and the plurality of rollers 120 are arranged at intervals along the direction from the first end to the second end of the saddle 110. It is understood that the axis of the roller 120 is disposed in the front-rear direction of the saddle 110, i.e., perpendicular to the direction from the first end to the second end of the saddle 110. The rollers 120 are uniformly arranged at equal intervals, so that the cable saddle 110 has enough moving distance to realize self-balancing adjustment, and meanwhile, the stability of the cable saddle 110 in the moving process is ensured.
According to an embodiment of the present invention, the cable saddle mechanism further includes a lower carrier plate 140 and an upper carrier plate 150, the rollers 120, the first limit stop 210, the second limit stop 220 and the stopper 310 are all disposed on the upper side of the lower carrier plate 140, the upper carrier plate 150 is slidably disposed on the upper sides of the plurality of rollers 120 in a direction from the first end to the second end of the cable saddle 110, the cable saddle 110 is disposed on the upper side of the upper carrier plate 150, and the cable saddle 110 and the upper carrier plate 150 move synchronously. It will be appreciated that the lower deck 140 is located on the underside of the overall system and serves as a stable support. The roller 120, the first limit stop 210, the second limit stop 220 and the stopper 310 are all mounted on the upper surface of the lower carrier plate 140, wherein the first limit stop 210, the second limit stop 220 and the stopper 310 are all fixedly mounted, and the roller 120 is rollably disposed on the upper surface of the lower carrier plate 140 between the first limit stop 210 and the second limit stop 220.
Further, the upper bearing plate 150 is used for supporting the cable saddle 110 and is disposed on the upper side of the plurality of rollers 120, so that the upper bearing plate 150 can move on the rollers 120, and the cable saddle 110 and the upper bearing plate 150 move synchronously. In this embodiment, the upper bearing plate 150 and the cable saddle 110 are integrated, so as to ensure the structural strength and improve the stability during the moving process.
According to an embodiment of the present invention, the first limit stopper 210 and the second limit stopper 220 are respectively provided at both ends of the upper deck 150, and the output end of the stopper 310 is connected to the saddle 110. It can be understood that the first limit baffle and the second limit baffle are respectively disposed at the left and right ends of the upper bearing plate 150, i.e., the left and right ends of the cable saddle 110, so as to limit the upper bearing plate 150, the cable saddle 110 and the roller 120. The output end of the brake 310 is connected with the cable saddle 110 to realize the clamping and braking of the cable saddle 110.
According to an embodiment of the present invention, the brake mechanism further includes a damper 330, the damper 330 is disposed on the lower deck 140, and an output end of the damper 330 is connected to the upper deck 150. As can be appreciated, the damper 330 is used to dissipate the vibration energy of the cable saddle 110 during an earthquake, allowing the cable saddle 110 to move within a range of motion with self-balancing. Specifically, the dampers 330 are fixedly mounted on the lower bearing plate 140 and located on the side of the upper bearing plate 150, in order to improve the damping and energy dissipation effects of the dampers 330, the dampers 330 may be correspondingly mounted on the front and rear sides of the upper bearing plate 150, and the corresponding number of the dampers 330 is specifically set according to the length of the cable saddle 110. The output end of the damper 330 is connected to the side of the upper deck 150.
Further, the output end of the damper 330 is provided with a hydraulic cylinder 340, the hydraulic cylinder 340 is horizontally arranged along the direction from the first end to the second end of the cable saddle 110, namely, the hydraulic cylinder 340 generates a left-right horizontal damping force on the upper bearing plate 150, so that the upper bearing plate 150 is ensured to drive the cable saddle 110 to move left and right within the moving range, self-balancing adjustment is performed, self-balancing adjustment performance of the whole system under the condition of adapting to earthquakes is improved, and the cable saddle is adapted to different areas, so that safety is ensured.
According to an embodiment of the present invention, the upper side of the saddle 110 is provided with a cable receiving groove 160 arranged along a direction from the first end to the second end of the saddle 110, and the main cable 130 is arranged in the cable receiving groove 160. It is understood that the cable saddle 110 is provided with a cable groove 160 on the top side, and the cable groove 160 is disposed along the direction from the first end to the second end of the cable saddle 110, i.e., the left-right direction. The main cable 130 is disposed in the cable receiving groove 160, so as to prevent the main cable 130 and the saddle 110 from falling off, thereby improving the force application effect of the main cable 130.
According to an embodiment of the present invention, the upper notch of the cable receiving groove 160 is provided with a plurality of longitudinal bars 170 spaced along a direction from the first end to the second end of the cable saddle 110, and the plurality of longitudinal bars 170 are perpendicular to the main cable 130. It can be understood that the plurality of longitudinal bars 170 are arranged at the notches on the upper side of the cable-taking groove 160, the plurality of longitudinal bars 170 are uniformly arranged at equal intervals along the left and right direction of the cable saddle 110, and the longitudinal bars 170 are perpendicular to the main cable 130, so that a protection effect is realized, when the main cable 130 is disconnected, the main cable 130 is prevented from being ejected from the cable-taking groove 160, and a blocking effect is achieved.
According to one embodiment of the present invention, the saddle 110 is provided with a plurality of vertical stiffeners 180 in the direction from the first end to the second end of the saddle 110. It can be appreciated that, in order to improve the compressive support capability of the cable saddle 110, a plurality of vertical stiffeners 180 are provided along the direction from the first end to the second end of the cable saddle 110, and the vertical stiffeners 180 are provided along the vertical direction, improving the structural strength of the cable saddle 110.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (9)
1. A suspension bridge main cable force self-balancing system is characterized by comprising:
the cable saddle mechanism comprises a cable saddle, a rolling shaft and a main cable, wherein the cable saddle is arranged on the rolling shaft in a sliding manner along the direction from the first end to the second end of the cable saddle, and the main cable is arranged on the upper side of the cable saddle along the direction from the first end to the second end of the cable saddle;
the limiting mechanism comprises a first limiting stop block and a second limiting stop block, the first limiting stop block is arranged at the first end of the cable saddle, and the second limiting stop block is arranged at the second end of the cable saddle;
the brake mechanism, brake mechanism includes the stopper, the first side and the second side of cable saddle are equipped with corresponding setting respectively the stopper.
2. The system of claim 1, wherein the braking mechanism further comprises an air velocity sensor disposed on an upper side of the cable saddle, and the air velocity sensor is connected to the brake.
3. The system of claim 1, wherein the axis of the roller is perpendicular to the direction from the first end to the second end of the saddle, and the plurality of rollers are spaced along the direction from the first end to the second end of the saddle.
4. The suspension bridge main cable force self-balancing system of claim 3, wherein the cable saddle mechanism further comprises a lower carrier plate and an upper carrier plate, the rollers, the first limit stop, the second limit stop and the brake are disposed on the upper side of the lower carrier plate, the upper carrier plate is slidably disposed on the upper sides of the plurality of rollers along the direction from the first end to the second end of the cable saddle, the cable saddle is disposed on the upper side of the upper carrier plate, and the cable saddle and the upper carrier plate move synchronously.
5. The system of claim 4, wherein the first limit stop and the second limit stop are respectively disposed at two ends of the upper deck, and the output end of the brake is connected to the cable saddle.
6. The suspension bridge main cable force self-balancing system according to claim 4, wherein the braking mechanism further comprises a damper, the damper is disposed on the lower deck, and an output end of the damper is connected to the upper deck.
7. The system of claim 1, wherein the saddle is provided with a cable groove on the upper side thereof in a direction from the first end to the second end of the saddle, and the main cable is disposed in the cable groove.
8. The system of claim 7, wherein the cable force of the main cable of the suspension bridge is self-balanced, and the upper notch of the cable receiving groove is provided with a plurality of longitudinal bars arranged at intervals along the direction from the first end to the second end of the cable saddle, and the plurality of longitudinal bars are perpendicular to the main cable.
9. The suspension bridge main cable force self-balancing system according to any one of claims 1 to 8, wherein the cable saddle is provided with a plurality of vertical stiffeners in a direction from the first end to the second end of the cable saddle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011277479.5A CN112376422A (en) | 2020-11-16 | 2020-11-16 | Cable force self-balancing system for main cable of suspension bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011277479.5A CN112376422A (en) | 2020-11-16 | 2020-11-16 | Cable force self-balancing system for main cable of suspension bridge |
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| Publication Number | Publication Date |
|---|---|
| CN112376422A true CN112376422A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011277479.5A Pending CN112376422A (en) | 2020-11-16 | 2020-11-16 | Cable force self-balancing system for main cable of suspension bridge |
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| CN (1) | CN112376422A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108463A (en) * | 2021-12-08 | 2022-03-01 | 湖北省交通规划设计院股份有限公司 | Suspension bridge cable tower stress state active control system |
-
2020
- 2020-11-16 CN CN202011277479.5A patent/CN112376422A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108463A (en) * | 2021-12-08 | 2022-03-01 | 湖北省交通规划设计院股份有限公司 | Suspension bridge cable tower stress state active control system |
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Inventor after: Wang Rengui Inventor after: Hao Hailong Inventor after: Jiang Zhenxiong Inventor after: Wang Zifu Inventor after: Yang Yudong Inventor after: Wei Leyong Inventor after: Zhou Shanshui Inventor after: Song Hui Inventor after: Zhang Qingyun Inventor after: Luo Chao Inventor before: Wang Rengui Inventor before: Hao Hailong Inventor before: Jiang Zhenxiong Inventor before: Wang Zifu Inventor before: Yang Yudong Inventor before: Wei Leyong Inventor before: Zhou Shanshui Inventor before: Song Hui Inventor before: Zhang Qingyun Inventor before: Luo Chao |
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