CN210658375U - Deformation-resistant foundation pit supporting structure - Google Patents
Deformation-resistant foundation pit supporting structure Download PDFInfo
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- CN210658375U CN210658375U CN201920919567.7U CN201920919567U CN210658375U CN 210658375 U CN210658375 U CN 210658375U CN 201920919567 U CN201920919567 U CN 201920919567U CN 210658375 U CN210658375 U CN 210658375U
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- foundation pit
- rotating rod
- deformation
- supporting structure
- tensioning
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Abstract
The utility model relates to a building engineering technical field to the inconvenient problem of constructor operation, provides a foundation ditch supporting construction of resistance to deformation, and this technical scheme is as follows: the foundation pit supporting device comprises a plurality of main support piles inserted into a foundation pit and a tensioning device anchored on the edge of the foundation pit, wherein the tensioning device comprises a plurality of fixing blocks and a tensioning piece connected with adjacent fixing blocks, the fixing blocks are provided with fixing devices penetrating through the fixing blocks and inserted into soil at the edge of the foundation pit, the fixing blocks are rotatably connected with rotating rod sets, the tensioning piece is in threaded connection with the rotating rod sets, the tensioning device further comprises locking devices for limiting the rotating rod sets to rotate, and one end, close to the foundation pit, of the tensioning device is in threaded connection with a flexible piece fixedly connected with the tops of the main support piles; one end threaded connection that is close to the foundation ditch through the fixed block has with main tributary fender pile top fixed connection's flexible piece for straining device is taut, so that need not the diagonal brace in the foundation ditch and go to prop the foundation ditch lateral wall, and then makes things convenient for the construction.
Description
Technical Field
The utility model belongs to the technical field of the building engineering technique and specifically relates to a supporting construction of foundation ditch of resistance to deformation is related to.
Background
In the building engineering construction, often involve the excavation of foundation ditch, when excavating the foundation ditch, the supporting construction of foundation ditch is indispensable, guarantees the safety of underground structure construction and foundation ditch all ring edge borders through supporting construction of foundation ditch, and generally, supporting of foundation ditch refers to and adopts the measure of fender, reinforcement and protection to foundation ditch lateral wall and all ring edge borders.
Usually, foundation ditch supporting construction adopts the bracing to withstand the bracing piece of foundation ditch lateral wall in order in the foundation ditch more for the foundation ditch lateral wall is difficult for collapsing in the foundation ditch, but the bracing piece easily influences constructor's operation in the foundation ditch, leads to the construction inconvenient, consequently, still improves the space.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a supporting construction of foundation ditch of resistance to deformation has convenient operation's advantage.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a foundation ditch supporting construction of resistance to deformation, is including inserting a plurality of main tributary fender piles in the foundation ditch and the straining device of anchor on the foundation ditch edge, straining device includes a plurality of fixed blocks and connects the straining piece of adjacent fixed block, be equipped with the fixing device who runs through the fixed block and insert in the soil at foundation ditch edge on the fixed block, the fixed block rotates and is connected with the rotor bar group, straining piece and rotor bar group threaded connection, straining device still includes restriction rotor bar group pivoted locking device, the one end threaded connection that straining device is close to the foundation ditch has the flexible piece with main tributary fender pile top fixed connection.
By adopting the technical scheme, the tensioning device comprises the plurality of fixing blocks, the contact area between the fixing blocks and the edge of the foundation pit is increased, and the fixing devices on the fixing blocks penetrate through the fixing blocks and are inserted into the soil at the edge of the foundation pit, so that the fixing blocks can be fixed on the upper surface of the edge of the foundation pit, and the tightness of the edge of the foundation pit is further enhanced; rotating on the bull stick group and being connected with locking device, restriction bull stick group rotates, make the bull stick group can threaded connection with the tensioning piece, through tensioning piece and bull stick group threaded connection, make the bull stick group can conveniently dismantle with the tensioning piece, be convenient for carry out a plurality of straining devices and connect, one end threaded connection that is close to the foundation ditch through the fixed block has the flexible member with main tributary fender pile top fixed connection, make the straining device pull up fender pile top towards the direction of keeping away from the foundation ditch, make the fender pile be difficult for toppling over in the foundation ditch, stabilize foundation pit lateral wall, so that do not need the diagonal brace to stay the foundation ditch lateral wall in the foundation ditch, the occupation to the foundation ditch inner space has been reduced, and then reduced the influence to constructor operation, and then make constructor convenient construction.
The utility model discloses further set up to: the tensioning piece comprises a steel wire rope and screw caps respectively connected to two ends of the steel wire rope, and the screw caps are in threaded connection with the rotating rod group.
Through adopting above-mentioned technical scheme for the angularly adjustable between the adjacent fixed block is applicable to unevenness's soil surface better, makes the stability of being connected of fixed block and foundation ditch edge soil improve, simultaneously, through spiral cover threaded connection in rotating rod group, connects more stably, and be convenient for taut wire rope, convenient operation.
The utility model discloses further set up to: the side edge of the fixed block is fixedly connected with a locking plate, a groove group is formed in the side wall, facing the rotating rod group, of the locking plate, a convex block is arranged on the spiral cover, and the convex block slides in the groove group.
Through adopting above-mentioned technical scheme, slide in the recess through the lug on the end cover to the restriction spiral cover rotates, makes when the rotation pole group rotates, and the spiral cover rotates with the dwang group takes place relative rotation, in order to realize the rotation pole group and spiral cover threaded connection, construction convenient operation.
The utility model discloses further set up to: the locking device comprises a worm wheel fixedly connected to the rotating rod group and a worm meshed with the worm wheel.
Through adopting above-mentioned technical scheme, utilize the worm wheel can not drive worm pivoted auto-lock principle, make the rotor bar group can not take place to rotate, and then make and rotor bar group and spiral cover can not take place relative rotation, make threaded rod and spiral cover threaded connection to after the suitable state, no longer take place relative rotation by oneself, and then guaranteed that rotor bar group and spiral cover can not separate, connection stability has been improved, utilize the worm to drive the rotatory principle of turbine simultaneously, can realize rotor bar group and spiral cover relative rotation through rotatory worm, and then accomplish the threaded connection operation of rotor bar group and spiral cover, make the work progress comparatively convenient.
The utility model discloses further set up to: and a rotating handle is fixedly connected to the worm.
Through adopting above-mentioned technical scheme, through worm and rotation handle fixed connection, utilize to rotate the handle and rotate the worm for constructor operation worm is more convenient.
The utility model discloses further set up to: the fixing block is provided with a threaded hole, the fixing device comprises a threaded rod, and the threaded rod is in threaded connection with the fixing block through the threaded hole and is inserted into soil at the edge of the foundation pit.
Through adopting above-mentioned technical scheme, pass the screw hole on the fixed block through the threaded rod and insert in the foundation ditch edge for the fixed block can be more stable fix in the soil at foundation ditch edge, has increased the area of being connected of threaded rod and foundation ditch edge soil through the screw thread on the threaded rod, makes connection stability better, reduces the fixed block and breaks away from the condition in the foundation ditch edge cunning towards the foundation ditch.
The utility model discloses further set up to: the flexible member is embedded in the main support pile.
Through adopting above-mentioned technical scheme, bury in the main tributary fender pile through the flexible piece for the flexible piece is connected stably with the main tributary fender pile, and then provides the pulling force of keeping away from the foundation ditch direction towards for the main tributary fender pile steadily.
The utility model discloses further set up to: the flexible piece is a pull rope, and a plurality of spines which extend upwards in an inclined mode towards the top of the foundation pit are fixedly connected to the pull rope.
Through adopting above-mentioned technical scheme, be the stay cord through the flexible piece, be equipped with a plurality of spine on the stay cord, increased the area of contact of stay cord with the concrete, upwards extend towards foundation ditch edge top slope through the spine, provide better resistance to plucking for more firm in the main tributary pile of stay cord is difficult for breaking away from.
The utility model discloses further set up to: the foundation pit supporting structure further comprises auxiliary supporting piles arranged at intervals with the main supporting piles, and five auxiliary supporting piles are arranged between every two adjacent main supporting piles.
Through adopting above-mentioned technical scheme, be provided with five vice fender piles at most through between adjacent main tributary fender pile for main tributary fender pile and vice fender pile cooperation are in order to strut the foundation ditch lateral wall by large tracts of land, reduce the tensioning device quantity save material, avoid vice fender pile too much to lead to the effect that tensioning device and main tributary fender pile cooperation strut the foundation ditch lateral wall to descend simultaneously, reduce the possibility of accident.
To sum up, the utility model discloses following beneficial effect has:
1. one end of each fixing block, which is close to the foundation pit, is in threaded connection with a flexible part fixedly connected with the top of the main support pile, and the adjacent fixing blocks are tensioned through the flexible parts, so that inclined support rods are not needed to support the side wall of the foundation pit in the foundation pit, and further, construction personnel can conveniently construct the foundation pit;
2. the tensioning piece comprises a steel wire rope, the steel wire rope is flexible, so that the angle between the fixed blocks can be changed, and the steel wire rope is connected with the rotating rod group through the screw cap in a threaded manner, so that the connection is stable;
3. utilize the worm wheel can not drive the worm and rotate the auto-lock principle that produces for the rotation pole group can not take place to rotate, and then makes the spiral cover with rotation pole group threaded connection can not take place to rotate, and the work progress is comparatively convenient.
Drawings
Fig. 1 is a schematic view of an overall structure of a deformation-resistant foundation pit supporting structure of the present invention;
FIG. 2 is a schematic structural view of the tensioning device of the present invention;
FIG. 3 is a schematic view of the overall structure of the tension device of the present invention;
fig. 4 is a schematic structural view of a deformation-resistant foundation pit supporting structure of the present invention;
fig. 5 is a schematic structural view of a portion B of fig. 4.
In the figure: 1. main supporting piles; 101. auxiliary supporting piles; 2. a tensioning device; 201. a fixed block; 202. a tension member; 2021. a wire rope; 2022. screwing a cover; 3. a locking plate set; 301. a first lock plate; 302. a second lock plate; 303. a third locking plate; 304. a first rotating lever; 305. a second rotating rod; 4. a groove group; 401. a first groove; 402. a second groove; 403. a third groove; 404. a fourth groove; 5. a set of rotating rods; 6. a locking device; 601. a worm; 602. a worm gear; 603. rotating the handle; 604. a bump; 605. a locking plate; 606. a locking lever; 7. pulling a rope; 701. pricking with a sharp point; 702. a threaded cap; 8. a fixing device; 801. a threaded rod; 9. a flexible member.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The utility model provides a resistance to deformation foundation ditch supporting construction, refers to figure 1, including a plurality of main tributary fender pile 1 that insert in the soil of foundation ditch bottom and butt foundation ditch inside wall, the vice fender pile 101 that sets up with main tributary fender pile 1 interval and the straining device 2 of anchor on the soil at foundation ditch edge, straining device 2 is connected with the flexible piece at the taut main tributary fender pile 1 top of orientation direction of keeping away from the foundation ditch.
Five auxiliary supporting piles 101 are arranged on the adjacent main supporting piles 1, the pile diameter of the main supporting pile 1 is consistent with that of the auxiliary supporting pile 101, and a gap is reserved between the main supporting pile 1 and the auxiliary supporting pile 101.
Referring to fig. 4, a plurality of main support piles 1 and secondary support piles 101 in a foundation pit are partially hidden in the edge of the foundation pit, the deep foundation pit supporting structure further comprises two locking plates 605 connected to the plurality of main support piles 1 and secondary support piles 101, the locking plates 605 are perpendicular to the side walls of the main support piles 1, locking rods 606 are arranged on the locking plates 605, locking holes are formed in the locking plates 605, and the locking rods 606 penetrate through the locking holes and abut against the main support piles 1 and the secondary support piles 101.
Referring to fig. 2 and 3, the tensioning device 2 includes a plurality of fixed blocks 201 distributed along a direction away from the foundation pit, a plurality of fixing devices 8 penetrate through the fixed blocks 201 along a thickness direction of the fixed blocks 201, the fixing devices 8 are threaded rods 801, a plurality of threaded holes for the threaded rods 801 to penetrate through and be in threaded connection with the threaded rods 801 are formed in the fixed blocks 201, and the threaded rods 801 penetrate through the threaded holes and then are inserted into soil at the edge of the foundation pit and are in threaded connection with the soil at the edge of the foundation pit.
Referring to fig. 2 and 3, the fixing block 201 is rectangular, the end of the fixing block 201 along the length direction faces the adjacent fixing block 201, the locking plate sets 3 are fixedly connected to both ends of the fixing block 201 along the length direction, the locking plate sets 3 include first locking plates 301 which are sequentially distributed along the width direction of the fixing block 201 and are parallel to the length direction of the fixing block 201, a gap is reserved between the first locking plate 301 and the second locking plate 302, a gap is reserved between the second locking plate 302 and the third locking plate 303, the locking plate group 3 is provided with a groove group 4, a first groove 401 is formed on the side wall of the first locking plate 301 facing the second locking plate 302, a second groove 402 is formed on the side wall of the second locking plate 302 facing the first locking plate 301, a third groove 403 is formed on the side wall of the second locking plate 302 facing the third locking plate 303, and a fourth groove 404 is formed on the side wall of the third locking plate 303 facing the second locking plate 302.
Referring to fig. 3, the first groove 401, the second groove 402, the third groove 403, and the fourth groove 404 are all parallel to the length direction of the fixed block 201, and the ends of the first groove 401, the second groove 402, the third groove 403, and the fourth groove 404, which are far away from the fixed block 201, are all communicated with the outside.
The two ends of the fixed block 201 in the length direction are further rotatably connected with a rotating rod set 5, and the rotating rod set 5 comprises a first rotating rod 304 positioned in a gap between the first locking plate 301 and the second locking plate 302 and a second rotating rod 305 positioned in a gap between the second locking plate 302 and the third locking plate 303.
Referring to fig. 2 and 3, the first rotating rod 304 and the second rotating rod 305 are both provided with external threads, and the ends of the first rotating rod 304 and the second rotating rod 305 facing the fixed block 201 are both fixedly connected with snap rings, and the outer diameters of the snap rings are larger than the outer diameters of the first rotating rod 304 and the second rotating rod 305.
The end part of the fixed block 201 in the length direction is provided with two rotating holes which are distributed between the first locking plate 301 and the second locking plate 302 and between the second locking plate 302 and the third locking plate 303, the first rotating rod 304 is inserted into the rotating holes to rotate, a limiting ring is fixedly connected in the rotating holes, and the limiting ring abuts against the surface of one side of the snap ring away from the center of the fixed block 201 to limit the first rotating rod 304 and the second rotating rod 305 to be separated from the fixed block 201.
Referring to fig. 1 and 2, a tightening member 202 is connected between adjacent fixing blocks 201, the tightening member 202 includes a steel cable 2021 and screw caps 2022 fixedly connected to two ends of the steel cable 2021, and the two screw caps 2022 are respectively connected to the first rotating rod 304 or the second rotating rod 305 of the adjacent fixing blocks 201 by screw threads.
Two opposite bumps 604 are fixedly connected to the outer side wall of the screw cap 2022, and the two bumps 604 are respectively embedded in the first groove 401 and the second groove 402 or the third groove 403 and the fourth groove 404 to slide.
Referring to fig. 2 and 3, a locking device 6 is rotatably connected to the first rotating rod 304, the locking device 6 includes a worm 601 penetrating through the first locking plate 301, the direction of the worm 601 is perpendicular to the length direction of the first rotating rod 304, a worm wheel 602 is fixedly connected to one end of the first rotating rod 304 near the rotating hole, the worm 601 is meshed with the worm wheel 602, a rotating handle 603 is arranged on one side of the first locking plate 301 far away from the first rotating rod 304, and the rotating handle 603 is fixedly connected to one end of the worm 601 near the first locking plate 301.
Referring to fig. 3 and 5, the tensioning device 2 further includes a flexible member 9 screwed on the fixing block 201 closest to the main pile 1, the flexible member 9 is a steel wire wound pull rope 7, one end of the pull rope 7 is fixedly connected with a threaded cap 702, and the threaded cap 702 is screwed with the first rotating rod 304 or the second rotating rod 305.
Referring to fig. 4 and 5, the pulling rope 7 is embedded in the main support pile 1, a part of the pulling rope 7 embedded in the main support pile 1 extends in the height direction of the main support pile 1, a plurality of spines 701 facing the top end of the foundation pit are fixedly connected to a part of side walls of the pulling rope 7 embedded in the main support pile 1, and the spines 701 and the pulling rope 7 are arranged at an included angle of 45 degrees.
The working conditions and principles of the embodiment are as follows:
the fixing block 201 is firstly laid on the soil at the edge of the foundation pit, then the fixing device 8 is driven in, so that the fixing device 8 penetrates through the fixing block 201 and is inserted into the soil at the edge of the foundation pit, then the adjacent fixing blocks 201 are connected through the tensioning piece 202, and the first rotating rod 304 or the second rotating rod 305 is driven to rotate by rotating the worm 601 so as to tighten the tensioning piece 202, so that the tensioning device 2 is anchored on the edge of the foundation pit.
Then, the pulling rope 7 is pre-buried in the main support pile 1, and the spine is ensured to be driven into the top of the foundation pit soil towards the main support pile 1, the main support pile 1 is driven into the soil by using a pile driver, the pulling rope 7 is in threaded connection with the first rotating rod 304 or the second rotating rod 305 on the fixed block 201 closest to the foundation pit through the threaded cap 702, the pulling rope 7 is tightened by rotating the threaded cap 702, and the top of the main support pile 1 is tightened towards the direction away from the foundation pit.
After a plurality of main fender piles 1 are driven into the soil, a plurality of auxiliary fender piles 101 are driven into the soil, so that the auxiliary fender piles 101 lean against the main fender piles 1, at most five auxiliary fender piles 101 are driven between the main fender piles 1, and the locking rod 606 penetrates through the locking hole to connect the locking plate 605 on the main fender piles 1 and the auxiliary fender piles 101 in a threaded mode, so that the main fender piles 1 and the auxiliary fender piles 101 are stable.
After the foundation pit supporting is completed, the foundation pit is dug, the inner wall of the foundation pit is better stabilized through the tensioning device 2, inclined support rods are not needed to support the side wall of the foundation pit in the foundation pit, and the occupation of space is reduced.
The tensioning device 2 comprises a plurality of fixing blocks 201, the fixing blocks 201 are in threaded connection with the fixing blocks 201 through tensioning pieces 202, and the fixing blocks 201 are penetrated through by the locking device 6 and inserted into soil at the edge of the foundation pit, so that the tensioning device 2 is stable on the edge of the foundation pit.
The self-locking principle that the worm gear 602 cannot drive the worm 601 to rotate is utilized to ensure that the rotating rod group 5 cannot rotate and further cannot rotate relative to the rotating rod group 5 and the screw cap 2022, so that the relative rotation between the rotating rod group 5 and the screw cap 2022 is not caused by itself after the threaded rod 801 and the screw cap 2022 are in threaded connection in a proper state, thereby ensuring that the rotating rod group 5 and the screw cap 2022 cannot be separated, improving the connection stability, simultaneously utilizing the principle that the worm 601 can drive the turbine to rotate, the relative rotation between the rotating rod group 5 and the screw cap 2022 can be realized by rotating the worm 601, further completing the threaded connection operation of the rotating rod group 5 and the screw cap 2022, further enabling the tensioning devices 2 to tension the top of the support pile towards the direction far away from the foundation pit, enabling the support pile not to easily topple towards the foundation pit, stabilizing the side wall of the foundation pit, and further avoiding the inclined support rod to support the side wall of the foundation pit in, the occupation of the space in the foundation pit is reduced, the influence on the operation of constructors is reduced, and the constructors can conveniently construct.
When the surface is unevenness's soil, be wire rope 2021 through tensioning piece 202 for the angularly adjustable between the adjacent fixed block 201, the stability of being connected of fixed block 201 and foundation ditch edge soil improves can with 5 threaded connection of rotor bar group through spiral cover 2022 that wire rope 2021 both ends are connected, makes tensioning device 2 take up main tributary fender pile 1, and then makes the foundation ditch lateral wall comparatively stable.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. The utility model provides a foundation ditch supporting construction of resistance to deformation, characterized by: the foundation pit supporting device comprises a plurality of main support piles (1) inserted into a foundation pit and a tensioning device (2) anchored on the edge of the foundation pit, wherein the tensioning device (2) comprises a plurality of fixing blocks (201) and a tensioning piece (202) connected with the adjacent fixing blocks (201), a fixing device (8) penetrating through the fixing blocks (201) and inserted into soil on the edge of the foundation pit is arranged on each fixing block (201), the fixing blocks (201) are rotatably connected with a rotating rod group (5), the tensioning piece (202) is in threaded connection with the rotating rod group (5), the tensioning device (2) further comprises a locking device (6) limiting the rotation of the rotating rod group (5), and one end, close to the foundation pit, of the tensioning device (2) is in threaded connection with a flexible piece (9) fixedly connected with the top of the main support piles (1).
2. A deformation-resistant foundation pit supporting structure as claimed in claim 1, wherein: the tensioning piece (202) comprises a steel wire rope (2021) and screw caps (2022) respectively connected to two ends of the steel wire rope (2021), and the screw caps (2022) are in threaded connection with the rotating rod group (5).
3. A deformation-resistant foundation pit supporting structure as claimed in claim 2, wherein: the side edge of the fixing block (201) is fixedly connected with a locking plate group (3), a groove group (4) is formed in the side wall, facing the rotating rod group (5), of the locking plate group (3), a protruding block (604) is arranged on the rotary cover (2022), and the protruding block (604) slides in the groove group (4).
4. A deformation-resistant foundation pit supporting structure as claimed in claim 1, wherein: the locking device (6) comprises a worm wheel (602) fixedly connected to the rotating rod group (5) and a worm (601) meshed with the worm wheel (602).
5. A deformation-resistant foundation pit supporting structure as claimed in claim 4, wherein: and a rotating handle (603) is fixedly connected to the worm (601).
6. A deformation-resistant foundation pit supporting structure as claimed in claim 1, wherein: the fixing block (201) is provided with a threaded hole, the fixing device (8) comprises a threaded rod (801), and the threaded rod (801) is in threaded connection with the fixing block (201) through the threaded hole and is inserted into soil at the edge of the foundation pit.
7. A deformation-resistant foundation pit supporting structure as claimed in claim 1, wherein: the flexible piece (9) is buried in the main support pile (1).
8. A deformation-resistant foundation pit supporting structure as claimed in claim 1, wherein: the flexible part (9) is a pull rope (7), and a plurality of spikes (701) which extend upwards in an inclined mode towards the top of the foundation pit are fixedly connected to the pull rope (7).
9. A deformation-resistant foundation pit supporting structure as claimed in claim 1, wherein: the foundation pit supporting structure further comprises auxiliary supporting piles (101) arranged at intervals of the main supporting piles (1), and five auxiliary supporting piles (101) are arranged between the adjacent main supporting piles (1) at most.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920919567.7U CN210658375U (en) | 2019-06-19 | 2019-06-19 | Deformation-resistant foundation pit supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920919567.7U CN210658375U (en) | 2019-06-19 | 2019-06-19 | Deformation-resistant foundation pit supporting structure |
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| Publication Number | Publication Date |
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| CN210658375U true CN210658375U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920919567.7U Active CN210658375U (en) | 2019-06-19 | 2019-06-19 | Deformation-resistant foundation pit supporting structure |
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| CN (1) | CN210658375U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980030A (en) * | 2020-08-06 | 2020-11-24 | 中铁七局集团第三工程有限公司 | Deep foundation pit deformation-resistant structure based on rope design |
-
2019
- 2019-06-19 CN CN201920919567.7U patent/CN210658375U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980030A (en) * | 2020-08-06 | 2020-11-24 | 中铁七局集团第三工程有限公司 | Deep foundation pit deformation-resistant structure based on rope design |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Jiamei Inventor after: Lu Lijia Inventor after: Yu Yihong Inventor after: Yan Mingyuan Inventor before: Yu Liping Inventor before: Lu Lijia Inventor before: Yu Yihong Inventor before: Yan Mingyuan |
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| CB03 | Change of inventor or designer information |