CN212865469U - Town road soft soil foundation reinforced structure - Google Patents
Town road soft soil foundation reinforced structure Download PDFInfo
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- CN212865469U CN212865469U CN202021478708.5U CN202021478708U CN212865469U CN 212865469 U CN212865469 U CN 212865469U CN 202021478708 U CN202021478708 U CN 202021478708U CN 212865469 U CN212865469 U CN 212865469U
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Abstract
The utility model relates to a town road soft soil foundation reinforced structure, including the subaerial foundation ditch of digging and establishing, insert at the bottom of the hole of foundation ditch and be equipped with a plurality of first stakes that are the array distribution, first stake is vertical setting, first stake top flushes at the bottom of the hole of foundation ditch, be equipped with a plurality of bases in the foundation ditch, a plurality of bases respectively with the top fixed connection of a plurality of first stakes, butt at the bottom of base bottom surface and the hole of foundation ditch, the base that is close to the foundation ditch lateral wall is equipped with the second stake that is the level setting, the lateral wall of the base that is close to the foundation ditch lateral wall and the lateral wall of foundation ditch are worn to establish in proper order by the second stake, the one end that the foundation ditch lateral wall was kept away from to the. This application has the effect of strengthening the firmness that reinforced structure and foundation ditch lateral wall are connected.
Description
Technical Field
The application relates to the field of soft soil foundation reinforcement, especially, relate to a town road soft soil foundation reinforced structure.
Background
The road base layer type in China mainly comprises a semi-rigid base layer and a flexible base layer, and various early-stage damage phenomena occur soon after a plurality of roads are built for various reasons, such as: cracks, subsidence, voids, looseness, pits, etc., which are often closely related to the quality of the substrate. Furthermore, early damage to the pavement due to insufficient strength of the base course is common in the engineering, so that the foundation reinforcement treatment measures are extremely important.
The utility model discloses a current chinese utility model patent that bulletins No. CN209457028U discloses a reinforced structure of soft soil foundation, include the ground, dig on the ground foundation ditch established, and the array inserts a plurality of reinforcement piles of establishing in foundation ditch soil, and the reinforcement pile includes pile body and stake tail, and the pile body sets up in foundation ditch soil, and the stake tail is kept somewhere at the foundation ditch subaerially, is equipped with coupling assembling on the stake tail. The connecting assembly can reinforce the connection of all pile bodies and reduce the possibility of differential settlement generated at different parts of the foundation.
Aiming at the related technologies, the inventor thinks that the defects that a gap often appears at the joint of the connecting component and the side wall of the foundation pit, if the gap is not filled in time, the connecting component and the side wall of the foundation pit are not firmly connected, and the reinforced structure and the side wall of the foundation pit are not firmly connected exist.
SUMMERY OF THE UTILITY MODEL
In order to strengthen the firmness that reinforced structure and foundation ditch lateral wall are connected, this application provides a town road soft soil foundation reinforced structure.
The application provides a pair of town road soft soil foundation reinforced structure adopts following technical scheme:
the utility model provides a town road weak soil foundation reinforced structure, includes the subaerial foundation ditch of digging and establishing, inserts at the bottom of the hole of foundation ditch and is equipped with a plurality of first stakes that are the array distribution, first stake is vertical setting, first stake top flushes with the bottom of the foundation ditch hole, be equipped with a plurality of bases in the foundation ditch, a plurality of bases respectively with the top fixed connection of a plurality of first stakes, butt at the bottom of base bottom surface and the foundation ditch hole is close to the base of foundation ditch lateral wall is equipped with the second stake that is the level setting, the lateral wall of foundation ditch and the lateral wall of foundation ditch are worn to establish in proper order by the second stake, the one end that the lateral wall of foundation ditch was kept away from to the second stake is equipped with the clamp plate that is used for compressing.
Through adopting above-mentioned technical scheme, the second stake passes the lateral wall of base lateral wall and foundation ditch in proper order, then inserts in the weak soil, and the clamp plate is under the drive of second stake with base lateral wall butt, and the clamp plate compresses tightly the base lateral wall in the foundation ditch lateral wall to the firmness that reinforced structure and foundation ditch lateral wall are connected has been strengthened.
Preferably, the one end that the foundation ditch was kept away from to the second stake is equipped with the mounting groove, be equipped with the flexible subassembly that is used for strengthening second stake and foundation ditch connection in the mounting groove, the working part of flexible subassembly is used for stretching out or withdrawing the second stake.
Through adopting above-mentioned technical scheme, after the second stake inserts the weak soil, the work portion of flexible subassembly can stretch out and insert in the weak soil from the second stake, and then has strengthened being connected of second stake and weak soil to the firmness that reinforced structure and foundation ditch lateral wall are connected has been strengthened.
Preferably, the telescopic assembly comprises an extrusion column, a first connecting rod, a guide rod, two second connecting rods and two opposite sliding plates, the extrusion column is horizontally arranged and is in threaded connection with the inside of the installation groove, one end of the first connecting rod is rotatably connected with one end of the extrusion column close to the bottom of the installation groove, two ends of the guide rod are fixed on the side wall of the installation groove, the length direction of the guide rod is perpendicular to the length direction of the second pile, the guide rod is close to the bottom of the installation groove, the two sliding plates are slidably connected with the guide rod, one end of each of the two second connecting rods is hinged with one end of the first connecting rod far away from the extrusion column, one ends of the two second connecting rods far away from the first connecting rod are respectively hinged with the two sliding plates, one end of the sliding plate close to the bottom of the installation groove is provided with a reinforcing rod, the second pile column is provided with two opposite first through holes for the two reinforcing rods to extend out, and the two first through holes are respectively opposite to the two reinforcing rods.
Through adopting above-mentioned technical scheme, the workman inserts the weak soil with the second stake and the clamp plate compresses tightly the base after, the workman can remove the extrusion post towards the mounting groove tank bottom through rotating the extrusion post, and then drives the head rod and remove to the mounting groove tank bottom, and the head rod promotes two second connecting rods for two slides are kept away from each other, and then drive the anchor strut and insert in the weak soil, thereby better enhancement the second stake and the being connected of weak soil.
Preferably, the spine portion of the second pile is arranged in a hollow manner, the spine portion of the second pile is provided with a plurality of second through holes, one end, far away from the foundation pit, of the second pile is provided with a first grouting hole, and the first grouting hole is communicated with the spine portion of the second pile.
Through adopting above-mentioned technical scheme, after the spine portion of second stake inserted the weak soil, the workman can pour into the grout into spine portion through first injected hole, if there is the weak soil in spine portion, the grout can compaction weak soil or with weak soil extrusion spine portion, can strengthen spine portion and being connected of weak soil after the grout hardens to the firmness of reinforced structure and foundation ditch lateral wall connection has been strengthened.
Preferably, the guide rod is sleeved with a spring, and two ends of the spring are respectively fixed on two side faces of the two sliding plates, which are close to each other.
Through adopting above-mentioned technical scheme, the spring has the trend of deformation, and when two slides received the thrust that comes from two second connecting rods, the spring can make better keeping away from each other of two slides.
Preferably, one end of the reinforcing rod, which is far away from the sliding plate, is provided with a sharp head which is convenient for the reinforcing rod to be inserted into the ground.
Through adopting above-mentioned technical scheme, the spike head easily inserts the soft soil to be convenient for the anchor strut inserts in the soft soil.
Preferably, the base close to the foundation pit lateral wall is provided with a plurality of connecting plates for reinforcing the connecting plates connected with the foundation pit lateral wall are arranged at the side face of the base close to the foundation pit lateral wall at intervals.
Through adopting above-mentioned technical scheme, the connecting plate is inserted and is located in the weak soil, and then has strengthened being connected of base and foundation ditch lateral wall to the firmness that reinforced structure and foundation ditch lateral wall are connected has been strengthened.
Preferably, the end face, far away from the side wall of the foundation pit, of the extrusion column is provided with a cross-shaped groove convenient for workers to rotate the extrusion column.
Through adopting above-mentioned technical scheme, when rotating the extrusion post, the cross recess can be convenient for the workman rotate the extrusion post with the help of the instrument.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the second pile penetrates through the side wall of the base side wall and the side wall of the foundation pit in sequence, then the second pile is inserted into the soft soil, the pressing plate is abutted against the side wall of the base under the driving of the second pile, and the pressing plate presses the side wall of the base against the side wall of the foundation pit, so that the firmness of the connection of the reinforcing structure and the side wall of the foundation pit is enhanced.
2. After the workman inserted the second stake weak soil and the clamp plate compresses tightly the base, the workman can remove the pillar towards the mounting groove tank bottom through rotating the pillar, and then drives the head rod and remove to the mounting groove tank bottom, and the head rod promotes two second connecting rods for two slides are kept away from each other, and then drive the anchor strut and insert in the weak soil, thereby better enhancement the second stake and be connected of weak soil.
3. After the spine portion of second stake inserts the weak soil, the workman can pour into the grout into spine portion through first injected hole, if there is the weak soil in spine portion, the grout can the compaction weak soil or with weak soil extrusion spine portion, can strengthen spine portion and being connected of weak soil after the grout sclerosis to the firmness of reinforced structure and foundation ditch lateral wall connection has been strengthened.
Drawings
Fig. 1 is a sectional view of a soft soil foundation reinforcing structure for a town road in the present embodiment.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a sectional view of the second pile in the present embodiment.
Description of reference numerals: 1. a foundation pit; 11. a first pile; 12. a base; 121. a base plate; 122. a pipe body; 2. a second pile; 21. pressing a plate; 22. a spike portion; 221. a second through hole; 23. a first grouting hole; 24. mounting grooves; 3. an expansion bolt; 4. mounting holes; 5. a telescoping assembly; 51. extruding the column; 511. a cross-shaped groove; 52. a first connecting rod; 53. a guide bar; 531. a spring; 54. a second connecting rod; 55. a slide plate; 551. a reinforcing rod; 6. a sharp point; 7. a connecting plate; 8. fixing grooves; 9. a top plate; 91. and a second grouting hole.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses town road soft soil foundation reinforced structure. Referring to fig. 1, a town road soft soil foundation reinforced structure, dig foundation ditch 1 of establishing including subaerial, insert at the bottom of the hole of foundation ditch 1 and be equipped with a plurality of first stakes 11, a plurality of first stakes 11 are array distribution at the bottom of foundation ditch 1 hole, first stakes 11 are vertical setting, first stakes 11 top flushes with the bottom of foundation ditch 1 hole, be equipped with a plurality of bases 12 in the foundation ditch 1, the bottom surface of a plurality of bases 12 respectively with the top fixed connection of a plurality of first stakes 11, butt at the bottom of base 12 bottom surface and foundation ditch 1 hole, base 12 that is close to foundation ditch 1 lateral wall is equipped with the second stake 2 that is the level setting, second stake 2 wears to establish lateral wall and the lateral wall of foundation ditch 1 of base 12 that is close to foundation ditch 1 lateral wall in proper order, the one end that second stake 2 kept away from foundation ditch 1 lateral wall is equipped with the clamp plate 21 that is used for. Second stake 2 passes base 12 lateral wall and foundation ditch 1 lateral wall in proper order, then inserts the weak soil, and clamp plate 21 and base 12 lateral wall butt under the drive of second stake 2, and clamp plate 21 compresses tightly base 12 lateral wall in foundation ditch 1 lateral wall to the firmness that reinforced structure and foundation ditch 1 lateral wall are connected has been strengthened.
Referring to fig. 1 and 2, the base 12 includes a bottom plate 121 and a pipe 122, the bottom surface of the bottom plate 121 is fixed to the top end of the corresponding first pile 11, the bottom surface of the bottom plate 121 abuts against the bottom of the foundation pit 1, the pipe 122 is in a square tube shape, one end of the pipe 122 is fixed to the top surface of the bottom plate 121, the cross-sectional area of the pipe 122 is equal to the area of the bottom plate 121, and the outer side surfaces of the adjacent pipes 122 abut against each other.
Referring to fig. 1 and 2, the expansion bolt 3 is arranged on the top surface of the bottom plate 121, the expansion bolt 3 penetrates through the top surface of the bottom plate 121 and is inserted into the top end of the first pile 11, and the expansion bolt 3 is fixedly connected with the top end of the first pile 11, so that the connection between the bottom plate 121 and the first pile 11 is strengthened.
Referring to fig. 2, a pipe body 122 close to the side wall of the foundation pit 1 is provided with a mounting hole 4 for a second pile 2 to pass through, the mounting hole 4 is located on the side face of the pipe body 122 close to the side wall of the foundation pit 1, the second pile 2 sequentially passes through the mounting hole 4 and the side wall of the foundation pit 1, the second pile 2 is inserted into the soft soil, the pressing plate 21 abuts against the side face of the side wall of the foundation pit 1 and the inner side face of the pipe body 122 close to the side wall of the foundation pit 1, and therefore the pipe body 122 is pressed on the side wall of.
Referring to fig. 3, the spine portion 22 of the second pile 2 is hollow, the spine portion 22 of the second pile 2 is provided with a plurality of second through holes 221, one end of the second pile 2, which is far away from the side wall of the spine portion 22, is provided with a first grouting hole 23, and the first grouting hole 23 is communicated with the spine portion 22 of the second pile 2. After the spine portion 22 of second pile 2 inserts the soft soil, the workman can inject the grout into spine portion 22 through first injected hole 23, if there is the soft soil in spine portion 22, the soft soil in the spine portion 22 of cement mortar compaction or with this soft soil extrusion spine portion 22, can strengthen spine portion 22 and soft soil's connection after the grout hardens.
Referring to fig. 2, the end face of the second pile 2 far away from the end face of the side wall of the foundation pit 1 is provided with a mounting groove 24, a telescopic assembly 5 used for reinforcing the connection between the second pile 2 and the side wall of the foundation pit 1 is arranged in the mounting groove 24, and the working part of the telescopic assembly 5 can extend out or retract the second pile 2. After second stake 2 inserts the weak soil, the work portion of flexible subassembly 5 can stretch out from second stake 2 and insert in the weak soil, and then has strengthened being connected of second stake 2 and weak soil to the firmness of reinforced structure and 1 lateral wall connection in foundation ditch has been strengthened.
Referring to fig. 2, the telescopic assembly 5 includes an extrusion column 51, a first connecting rod 52, a guide rod 53, two second connecting rods 54 and two opposite sliding plates 55, the contour of the installation groove 24 is cylindrical, the extrusion column 51 horizontally disposed is screwed into the installation groove 24, the length of the extrusion column 51 is smaller than the depth of the installation groove 24, both ends of the guide rod 53 are fixed to the side wall of the installation groove 24, the length direction of the guide rod 53 is perpendicular to the length direction of the second pile 2, the guide rod 53 is close to the bottom of the installation groove 24, the guide rod 53 is located between the extrusion column 51 and the bottom of the installation groove 24, the two sliding plates 55 horizontally disposed and all slidably connected to the guide rod 53, one end of the first connecting rod 52 horizontally disposed is rotatably connected to the end of the extrusion column 51 close to the bottom of the installation groove 24, one end of the two second connecting rods 54 is hinged to the end of the first, the ends, far away from the first connecting rod 52, of the two second connecting rods 54 are hinged to the two sliding plates 55 respectively, the sliding plates 55 are in a long plate shape, the hinged positions of the second connecting rods 54 and the sliding plates 55 are located at the ends, close to the first connecting rods 52, of the sliding plates 55, reinforcing rods 551 are arranged on two sides, far away from each other, of the two sliding plates 55, the length direction of the reinforcing rods 551 is perpendicular to the length direction of the second pile column 2, the reinforcing rods 551 are close to the ends, close to the bottoms of the mounting grooves 24, of the sliding plates 55, the second pile column 2 is provided with two opposite first through holes for the two reinforcing rods 551 to stretch out, and the two first through holes are. After the worker inserts second stake 2 soft soil and clamp plate 21 compresses tightly body 122, the worker can remove extrusion 51 towards the bottom of mounting groove 24 tank through rotating extrusion 51, and then drives head rod 52 and remove to the bottom of mounting groove 24 tank, and head rod 52 promotes two second connecting rods 54 for two slides 55 keep away from each other, and then drives anchor strut 551 and inserts in the soft soil, thereby better strengthening being connected of second stake 2 and soft soil.
Referring to fig. 2, the end surface of the extrusion column 51 far away from the side wall of the foundation pit 1 is provided with a cross-shaped groove 511 for facilitating the worker to rotate the extrusion column 51, and when the extrusion column 51 is rotated, the cross-shaped groove 511 can facilitate the worker to rotate the extrusion column 51 by means of a tool.
Referring to fig. 2, the guide rod 53 is sleeved with a spring 531, and both ends of the spring 531 are fixed to two side surfaces of the two sliding plates 55, respectively, which are close to each other. The spring 531 is pressed by the two sliding plates 55, and the spring 531 tends to deform, so that the two sliding plates 55 can be better separated from each other by the spring 531 when the two sliding plates 55 are pushed by the two second connecting rods 54.
Referring to fig. 2, the end of the reinforcing bar 551 remote from the slide plate 55 is provided with a spike head 6, the spike head 6 is opposite to the corresponding first through hole, and the spike head 6 is easily inserted into soft soil, thereby facilitating the insertion of the reinforcing bar 551 into the soft soil.
Referring to fig. 2, the pipe body 122 close to the side wall of the foundation pit 1 is provided with a plurality of connecting plates 7, one of the side edges of the plurality of connecting plates 7 is fixed on the outer side of the pipe body 122 close to the side wall of the foundation pit 1 at intervals, the connecting plates 7 are arranged in an upward inclined manner, the connecting plates 7 are inserted into the soft soil, and then the connection between the pipe body 122 and the side wall of the foundation pit 1 is enhanced, so that the firmness of the connection between the reinforcing structure and the side wall of.
Referring to fig. 2, the terminal surface on body 122 top is equipped with fixed slot 8, and the body 122 top is equipped with roof 9, and body 122 top is located through 8 lids of fixed slot to roof 9, and the top surface of roof 9 flushes with body 122 top, and two second injected holes 91 have been seted up to 9 top surfaces of roof, and two second injected holes 91 are interval distribution. After the reinforcing operation of the second pile column 2 is completed, the worker covers the top plate 9 in the fixing groove 8, cement paste is injected into the pipe body 122 through the two second grouting holes 91, and the cement paste is filled in the hole opening of the second grouting hole 91, so that the mounting of the reinforcing structure is completed.
The implementation principle of the embodiment of the application is as follows: firstly, the bottom surface of a base 12 is fixedly connected with a corresponding first pile 11, then the connection between the base 12 and the first pile 11 is reinforced through an expansion bolt 3, a pipe body 122 close to the side wall of a foundation pit 1 is connected with the side wall of the foundation pit 1 through a plurality of connecting plates 7, then a second pile 2 passes through a mounting hole 4 and is inserted into soft soil until a pressing plate 21 presses the pipe body 122 tightly, a tool is used for rotating an extrusion column 51, the extrusion column 51 moves towards the bottom of a mounting groove 24, then a first connecting rod 52 is driven to move towards the bottom of the mounting groove 24, the first connecting rod 52 pushes two second connecting rods 54, so that two sliding plates 55 are far away from each other, further a reinforcing rod is driven to be inserted into the soft soil, a worker injects cement slurry into a sharp thorn part 22 through a first grouting hole 23, the cement slurry into the sharp thorn part 22 is compacted or extruded out of the sharp thorn part 22, the sharp thorn part 22 can, thereby strengthened the firmness that reinforced structure and foundation ditch 1 lateral wall are connected, the workman will roof 9 lid locate in fixed slot 8, then pour into body 122 with grout through two second injected hole 91, grout fills up to second injected hole 91 drill way to the completion is to the installation of reinforced structure.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a town road soft soil foundation reinforced structure, includes subaerial foundation ditch (1) of digging and establishing, its characterized in that: a plurality of first piles (11) distributed in an array are inserted at the bottom of the foundation pit (1), the first pile (11) is vertically arranged, the top end of the first pile (11) is flush with the bottom of the foundation pit (1), a plurality of bases (12) are arranged in the foundation pit (1), the bases (12) are respectively and fixedly connected with the top ends of the first pile columns (11), the bottom surface of the base (12) is abutted against the bottom of the foundation pit (1), a second pile column (2) which is horizontally arranged is arranged on the base (12) close to the side wall of the foundation pit (1), the second pile column (2) sequentially penetrates through the side wall of the base (12) close to the side wall of the foundation pit (1) and the side wall of the foundation pit (1), one end, far away from the side wall of the foundation pit (1), of the second pile column (2) is provided with a pressing plate (21) used for pressing the side wall of the base (12), and the pressing plate (21) is abutted to the side wall of the base (12).
2. The municipal road soft soil foundation reinforcement structure according to claim 1, wherein: one end that foundation ditch (1) was kept away from in second stake (2) is equipped with mounting groove (24), be equipped with in mounting groove (24) and be used for strengthening flexible subassembly (5) that second stake (2) are connected with foundation ditch (1), the work portion of flexible subassembly (5) is used for stretching out or withdraws second stake (2).
3. The municipal road soft soil foundation reinforcement structure according to claim 2, wherein: telescopic subassembly (5) are the level setting including extrusion column (51), head rod (52), guide bar (53), two second connecting rods (54) and two relative slide (55) extrusion column (51) threaded connection in mounting groove (24), head rod (52) wherein one end is rotated and is connected in extrusion column (51) one end near mounting groove (24) tank bottom, the lateral wall of mounting groove (24) is all fixed in at guide bar (53) both ends, the length direction of guide bar (53) is perpendicular with the length direction of second stake (2), guide bar (53) are close to in mounting groove (24) tank bottom, two slide (55) sliding connection is in guide bar (53), two wherein one end of second connecting rod (54) all articulates in head rod (52) the one end of keeping away from extrusion column (51), two the one end that head rod (52) was kept away from to second connecting rod (54) articulates respectively in two slide (55) The reinforcing rods (551) are arranged at one end, close to the bottom of the mounting groove (24), of the sliding plate (55), the length direction of the reinforcing rods (551) is perpendicular to that of the second pile column (2), the second pile column (2) is provided with two opposite first through holes for the two reinforcing rods (551) to extend out, and the two first through holes are respectively opposite to the two reinforcing rods (551).
4. The municipal road soft soil foundation reinforcement structure according to claim 1, wherein: spine portion (22) of second stake (2) are cavity setting, spine portion (22) of second stake (2) are equipped with a plurality of second through-holes (221), first slip casting hole (23) have been seted up to the one end that foundation ditch (1) was kept away from in second stake (2), first slip casting hole (23) communicate with each other with spine portion (22) of second stake (2).
5. The municipal road soft soil foundation reinforcement structure according to claim 3, wherein: the guide rod (53) is sleeved with a spring (531), and two ends of the spring (531) are respectively fixed on two side faces, close to each other, of the two sliding plates (55).
6. The municipal road soft soil foundation reinforcement structure according to claim 3, wherein: and one end of the reinforcing rod (551) far away from the sliding plate (55) is provided with a sharp head (6) which is convenient for the reinforcing rod (551) to be inserted into the ground.
7. The municipal road soft soil foundation reinforcement structure according to claim 1, wherein: the base (12) close to the side wall of the foundation pit (1) is provided with a plurality of connecting plates (7) for reinforcing the connecting plates (7) connected with the side wall of the foundation pit (1) and arranged on the side surface of the base (12) close to the side wall of the foundation pit (1) at intervals.
8. The municipal road soft soil foundation reinforcement structure according to claim 3, wherein: the end face, far away from the side wall of the foundation pit (1), of the extrusion column (51) is provided with a cross-shaped groove (511) convenient for workers to rotate the extrusion column (51).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021478708.5U CN212865469U (en) | 2020-07-23 | 2020-07-23 | Town road soft soil foundation reinforced structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021478708.5U CN212865469U (en) | 2020-07-23 | 2020-07-23 | Town road soft soil foundation reinforced structure |
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| CN212865469U true CN212865469U (en) | 2021-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113830445A (en) * | 2021-08-20 | 2021-12-24 | 广东邦普循环科技有限公司 | Fixing assembly and fixing device |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113830445A (en) * | 2021-08-20 | 2021-12-24 | 广东邦普循环科技有限公司 | Fixing assembly and fixing device |
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