CN115198769A - Regulation formula underground structure supporting device with automatic monitoring - Google Patents
Regulation formula underground structure supporting device with automatic monitoring Download PDFInfo
- Publication number
- CN115198769A CN115198769A CN202211024638.XA CN202211024638A CN115198769A CN 115198769 A CN115198769 A CN 115198769A CN 202211024638 A CN202211024638 A CN 202211024638A CN 115198769 A CN115198769 A CN 115198769A
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- fixed
- foundation pit
- rod
- positioning
- wall
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an adjustable foundation pit supporting device with automatic monitoring, which comprises: the device comprises a fixed rod, a fixed screw rod, a positioning assembly, a right-angle bottom plate, a protective plate, a monitoring device and a cross rod, wherein the fixed rod is horizontally arranged at the bottom of the foundation pit and is fixed through the fixed screw rod; the four positioning assemblies are distributed in a square shape, wherein the lower two positioning assemblies are fixed at two ends of the fixed rod and penetrate through the right-angle bottom plate to be fixed on the inner wall of the foundation pit; the bottom of the guard plate is fixedly connected with the right-angle bottom plate through a screw; the bottom of the monitoring device is fixed on the fixed rod, the top of the monitoring device is fixed below the cross rod, and two ends of the cross rod are fixedly connected with the two positioning assemblies above the cross rod respectively. Compared with the prior art, the invention can be adjusted according to the inclination angle of the inner wall of the foundation pit, the protection plate is fixed by the aid of the reaction force of the compression spring, deformation monitoring and feedback are carried out by the action force generated by the inclination of the protection plate under the action of the inner wall of the foundation pit, and the invention has simple structure and convenient recovery.
Description
Technical Field
The invention relates to the technical field of foundation pit construction, in particular to an adjustable foundation pit supporting device with automatic monitoring function.
Background
The deep foundation pit support has the advantages that the deformation of the surrounding soil body is inevitably caused in the excavation process of the foundation pit, the deep foundation pit support means that the support, reinforcement and protection measures are adopted on the inner wall of the deep foundation pit and the surrounding environment in order to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, the foundation pit support has the dual functions of soil retaining and water stopping, the foundation pit support is economical under general conditions, and the foundation pit support has no vibration, no noise, less pollution and slight soil squeezing in the construction process. When the existing deep foundation pit is built with a supporting structure, the supporting structure is complex to install and is not beneficial to recycling, so that the building cost is increased, the transformation of modern building construction cannot be realized, the supporting structure cannot be adjusted according to the inclination of the inner wall of the foundation pit when built with the supporting structure, the supporting difficulty is increased, and the real-time monitoring equipment for the foundation pit is lacked after the building is completed. Therefore, there is a need to provide an adjustable foundation pit supporting device with automatic monitoring to solve the problems of the prior art.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a regulation formula excavation supporting device with automatic monitoring, includes:
the fixing rod is horizontally arranged at the bottom of the foundation pit and is fixed through a fixing screw rod;
four positioning assemblies are distributed in a square shape, and the lower two positioning assemblies are fixed at two ends of the fixed rod;
the right-angle bottom plate is attached to the inner wall of the foundation pit, and the positioning assembly fixedly connected with the fixing rod penetrates through the right-angle bottom plate and is fixed in the inner wall of the foundation pit;
the bottom of the guard plate is fixedly connected with the right-angle bottom plate through a screw, and the upper part of the guard plate is fixed on the inner wall of the foundation pit through a positioning assembly;
and the bottom of the monitoring device is fixed on the fixed rod, the top of the monitoring device is fixed below the cross rod, and the two ends of the cross rod are respectively fixedly connected with the two positioning assemblies above the cross rod.
Furthermore, as preferred, be equipped with the knuckle on the dead lever, just the knuckle and monitoring device bottom fixed connection, under the effect of knuckle, monitoring device rotates the regulation, after monitoring device is parallel with the backplate, fixes the knuckle.
Further, preferably, the positioning assembly includes:
the front end of the screw rod is provided with a drill bit, the tail end of the screw rod is provided with a plurality of positioning holes, and the front end of the screw rod is fixed in the inner wall of the foundation pit;
the compression spring is arranged on the screw rod;
the positioning nut is arranged at the tail end of the screw rod;
the clamping needle penetrates through the positioning hole to limit the positioning nut, the compression spring is arranged between the fixed rod and the right-angle bottom plate at the position of the positioning assembly below the positioning needle, the screw rod penetrates through the fixed rod and the right-angle bottom plate to be fixed on the inner wall of the foundation pit, and the positioning nut is arranged on the outer side of the fixed rod and is fixed by the clamping needle; at top locating component department, compression spring sets up between horizontal pole and backplate, and the lead screw passes horizontal pole and backplate and fixes on the foundation ditch inner wall, and positioning nut sets up in the outside of horizontal pole, fixes it by the card needle, and the lead screw passes the hole of backplate and is squarely, and the lead screw is located the bottom, takes place to deflect for the backplate and provides certain rotation space, alleviates pressure and produces the information of tentatively collapsing through monitoring device transmission foundation ditch inner wall.
Further, as preferred, the backplate is the notch type, and bottom handing-over department is equipped with the pivot, and when the foundation ditch inner wall that needs strutted was the tilt state, backplate accessible pivot rotated, and then with the laminating of foundation ditch inner wall, and then adjusted monitoring device through the knuckle, made monitoring device and backplate parallel, the vertical direction in middle part is equipped with the spout, just the spout is corresponding with monitoring device.
Further, preferably, the monitoring device includes:
the bottom of the upright post is fixed on the steering knuckle, the top of the upright post is fixed on the cross bar, and the angle of the upright post is adjusted by the steering knuckle;
the moving assembly is movably arranged on the upright post;
the transmission assembly is fixed on the moving assembly and is perpendicular to the stand column, when the transmission assembly is installed, the moving assembly drives the transmission assembly to adjust the position, in the using process, thrust is generated on the protective plate through the inner wall of the foundation pit, the transmission assembly further moves downwards on the sliding groove of the protective plate, and then the transmission assembly is driven to move downwards on the stand column and feed back the monitoring system.
Further, as preferred, the stand includes fixed column and fixed tooth way, fixed tooth way sets up in the fixed column one side relative with the backplate, just the fixed column all the other trilaterals all are equipped with the slide, under the effect of fixed tooth way, move the regulation to the removal subassembly, provide certain removal resistance simultaneously, make the removal subassembly under the state that does not receive external force, fix on the stand.
Further, preferably, the moving assembly includes:
the movable lantern ring is movably arranged on the fixed column;
the rotating wheel is fixed on the movable lantern ring and is meshed with the fixed gear way;
the handle is fixed on the central axis of the rotating wheel, and the rotating wheel is driven to rotate by rotating the handle, so that the rotating wheel moves on the fixed gear way, and the movable lantern ring is driven to move on the fixed column.
Further, preferably, the transmission assembly includes:
the telescopic shaft is fixed on the movable lantern ring and positioned on one side opposite to the rotating wheel, and is telescopic according to the distance between the guard plate and the transmission assembly, so that the transmission assembly is positioned on the sliding groove of the guard plate;
the clamping groove is fixed at the extending end of the telescopic shaft;
the gyro wheel, it is rotatable to fix in the draw-in groove, and corresponding with the spout on the backplate, when the telescopic shaft is in fixed state, the backplate receives the pressure emergence slope of foundation ditch inner wall, and then the backplate extrudees drive assembly, makes the gyro wheel rotate, and then drives the removal subassembly and move down on the stand.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the arrangement of the steering knuckle on the fixed rod and the rotating shaft on the guard plate, the adjustment can be carried out according to the inclination angle of the inner wall of the foundation pit, so that the guard plate is attached to the foundation pit to protect the foundation pit, and through the arrangement of the positioning assembly, the guard plate is pushed to be attached and fixed to the inner wall of the foundation pit through the reaction force of the compression spring.
According to the invention, through the arrangement of the monitoring device, the space between the upper part of the guard plate and the upright post is reduced by virtue of the acting force generated by the inclination of the guard plate under the action of the inner wall of the foundation pit, so that the transmission assembly is extruded to drive the moving assembly to move downwards on the upright post and feed back to the monitoring system, and the monitoring system can be used for timely processing by workers.
Drawings
Fig. 1 is a schematic view of the overall structure of an adjustable foundation pit supporting device with automatic monitoring;
FIG. 2 is a side view of an adjustable excavation supporting apparatus with automatic monitoring;
FIG. 3 is a schematic structural view of a positioning assembly in an adjustable foundation pit supporting device with automatic monitoring;
FIG. 4 is a schematic structural view of a monitoring device in an adjustable foundation pit supporting device with automatic monitoring;
in the figure: 1. fixing the rod; 2. fixing the screw rod; 3. a positioning assembly; 4. a right angle bottom plate; 5. a guard plate; 6. a monitoring device; 7. a cross bar; 11. a knuckle; 31. a screw rod; 32. a compression spring; 33. positioning a nut; 34. clamping a needle; 51. a rotating shaft; 52. a chute; 61. a column; 62. a moving assembly; 63. a transmission assembly; 611. fixing a column; 612. fixing the tooth path; 621. moving the collar; 622. a rotating wheel; 623. a handle; 631. a telescopic shaft; 632. a card slot; 633. and a roller.
Detailed Description
Referring to fig. 1 to 4, in an embodiment of the present invention, an adjustable foundation pit supporting device with automatic monitoring includes:
the fixing rod 1 is horizontally arranged at the bottom of the foundation pit and is fixed through a fixing screw rod 2;
the four positioning assemblies 3 are distributed in a square shape, and the two positioning assemblies 3 below are fixed at two ends of the fixed rod 1;
the right-angle bottom plate 4 is attached to the inner wall of the foundation pit, and the positioning assembly 3 fixedly connected with the fixed rod 1 penetrates through the right-angle bottom plate 4 and is fixed in the inner wall of the foundation pit;
the bottom of the guard plate 5 is fixedly connected with the right-angle bottom plate 4 through screws, and the upper part of the guard plate is fixed on the inner wall of the foundation pit through the positioning assembly 3;
and the bottom of the monitoring device 6 is fixed on the fixing rod 1, the top of the monitoring device is fixed below the cross rod 7, and two ends of the cross rod 7 are fixedly connected with the two positioning assemblies 3 above the cross rod respectively.
In this embodiment, the fixing rod 1 is provided with a knuckle 11, the knuckle 11 is fixedly connected with the bottom of the monitoring device 6, the monitoring device 6 rotates and adjusts under the action of the knuckle 11, and the knuckle 11 is fixed after the monitoring device 6 is parallel to the guard plate 5.
In this embodiment, the positioning assembly 3 includes:
the front end of the screw rod 31 is provided with a drill bit, the tail end of the screw rod 31 is provided with a plurality of positioning holes, and the front end of the screw rod 31 is fixed in the inner wall of the foundation pit;
a compression spring 32 provided on the lead screw 31;
a positioning nut 33 provided at the tail end of the screw rod 31;
the clamping pin 34 penetrates through the positioning hole to limit the positioning nut 33, the compression spring 32 is arranged between the fixing rod 1 and the right-angle bottom plate 4 at the lower positioning assembly 3, the screw rod 31 penetrates through the fixing rod 1 and the right-angle bottom plate 4 to be fixed on the inner wall of the foundation pit, and the positioning nut 33 is arranged on the outer side of the fixing rod 1 and is fixed by the clamping pin 34; at upper locating component 3, compression spring 32 sets up between horizontal pole 7 and backplate 5, and lead screw 31 passes horizontal pole 7 and backplate 5 and fixes on the foundation ditch inner wall, and set nut 33 sets up in the outside of horizontal pole 7, fixes it by card needle 34, and the hole that lead screw 31 passed backplate 5 is square, and lead screw 31 is located the bottom, takes place to deflect for backplate 5 and provides certain rotation space, alleviates pressure and produces the information of preliminary collapsing through monitoring device 6 transmission foundation ditch inner wall.
In this embodiment, the guard plate 5 is a notch, the bottom joint is provided with a rotating shaft 51, when the inner wall of the foundation pit to be supported is in an inclined state, the guard plate 5 can rotate through the rotating shaft 51, and then is attached to the inner wall of the foundation pit, and then the monitoring device 6 is adjusted through the knuckle 11, so that the monitoring device 6 is parallel to the guard plate 5, the middle part of the guard plate is provided with a sliding groove 52 in the vertical direction, and the sliding groove 52 corresponds to the monitoring device 6.
In this embodiment, the monitoring device 6 includes:
the bottom of the upright post 61 is fixed on the steering knuckle 11, the top of the upright post 61 is fixed on the cross rod 7, and the angle of the upright post 61 is adjusted by the steering knuckle 11;
a moving assembly 62 movably arranged on the upright post 61;
the transmission assembly 63 is fixed on the moving assembly 62 and is perpendicular to the upright post 61, when the transmission assembly 63 is installed, the moving assembly 62 drives the transmission assembly 63 to adjust the position, in the using process, thrust is generated on the protection plate 5 through the inner wall of the foundation pit, the transmission assembly 63 further moves downwards on the sliding groove 52 of the protection plate 5, and then the transmission assembly 62 is driven to move downwards on the upright post 61 and feed back to the monitoring system.
In this embodiment, the upright post 61 includes a fixed column 611 and a fixed tooth way 612, the fixed tooth way 612 is disposed on a surface of the fixed column 611 opposite to the guard plate 5, and the remaining three surfaces of the fixed column 611 are provided with slide ways, so that under the action of the fixed tooth way 612, the moving assembly 62 is adjusted to move, and at the same time, a certain moving resistance is provided, so that the moving assembly 62 is fixed on the upright post 61 without being subjected to an external force.
In this embodiment, the moving assembly 62 includes:
a movable collar 621 movably disposed on the fixed column 611;
a rotating wheel 622 fixed on the moving collar 621 and engaged with the fixed gear way 612;
the handle 623 is fixed on the central axis of the rotating wheel 622, and the rotating wheel 622 is driven to rotate by rotating the handle 623, so that the rotating wheel 622 moves on the fixed gear way 612, and the moving sleeve ring 621 is driven to move on the fixed column 611.
In this embodiment, the transmission assembly 63 includes:
the telescopic shaft 631 is fixed on the movable sleeve ring 621 and is positioned on one side opposite to the rotating wheel 622, and extends and retracts according to the distance between the guard plate 5 and the transmission assembly 63, so that the transmission assembly 63 is positioned on the sliding groove 52 of the guard plate 5;
a locking groove 632 fixed on the extending end of the extension shaft 631;
the gyro wheel 633, rotatable the fixing in draw-in groove 632, and corresponding with spout 52 on the backplate 5, when telescopic shaft 631 was in fixed state, when backplate 5 received the pressure emergence slope of foundation ditch inner wall, and then backplate 5 extrudeed drive assembly 63, made gyro wheel 633 rotate, and then driven removal subassembly 62 and move down on stand 61.
In specific implementation, first, the right-angle bottom plate 4 is fixed at the junction between the inner wall and the bottom of the foundation pit, then the lead screw 31 passes through the right-angle bottom plate 4 and is fixed on the inner wall of the foundation pit, and then the compression spring 32 is sequentially installed on the lead screw 31, the fixing rod 1 and the positioning nut 33 are sequentially installed, the compression spring 32 is compressed by the fixing rod 1, and then the positioning nut 33 is fixed on the outer side of the fixing rod 1 by the clamp pin 34, and then the fixing rod 1 is fixed on the bottom of the foundation pit by the fixing lead screw 2, and then the right-angle bottom plate 4 is attached to the inner wall of the foundation pit by the reaction force of the compression spring 32, and then the guard plate 5 is fixed on the right-angle bottom plate 4, with the assistance of the rotating shaft 51, so that the guard plate 5 is attached to the inner wall of the foundation pit, and then the top of the guard plate 5 is fixed on the inner wall of the foundation pit by the lead screw 31 again, and after the upright 61 and the guard plate 5 are parallel to the guard plate 11 by rotating the rotating shaft 7, and then the fixing the positioning nut 33 by the clamp pin 34, and further fixing the guard plate 61 to the adjusting roller assembly 623 which drives the adjusting assembly 61 which moves to the fixing the center of the guard plate 631 and then the adjusting wheel assembly 61 which moves on the top of the fixing roller 623 which drives the guard plate 5, and which moves up, and the adjusting assembly 623, and the adjusting assembly which drives the guard plate 61, and the adjusting assembly which moves up and the adjusting roller assembly 61, and the adjusting assembly which moves up and the guard plate 5. When receiving the pressure of foundation ditch inner wall, at first being cushioned it by compression spring 32, if too big compression spring 32 that leads to of pressure compresses once more, backplate 5 takes place to squint, and then the distance between backplate 5 and the stand 61 diminishes, and then backplate 5 extrudees transmission assembly 63, makes gyro wheel 633 rotate, and then drives removal subassembly 62 and move down on stand 61 and feed back to monitoring system.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (8)
1. The utility model provides a regulation formula excavation supporting device with automatic monitoring which characterized in that: the method comprises the following steps:
the fixing rod (1) is horizontally arranged at the bottom of the foundation pit and is fixed through a fixing screw rod (2);
the four positioning assemblies (3) are distributed in a square shape, and the two positioning assemblies (3) below are fixed at two ends of the fixed rod (1);
the right-angle bottom plate (4) is attached to the inner wall of the foundation pit, and the positioning assembly (3) fixedly connected with the fixing rod (1) penetrates through the right-angle bottom plate (4) and is fixed in the inner wall of the foundation pit;
the bottom of the guard plate (5) is fixedly connected with the right-angle bottom plate (4) through screws, and the upper part of the guard plate is fixed on the inner wall of the foundation pit through a positioning assembly (3);
and the bottom of the monitoring device (6) is fixed on the fixing rod (1), the top of the monitoring device is fixed below the cross rod (7), and two ends of the cross rod (7) are respectively fixedly connected with the two positioning components (3) above the monitoring device.
2. An adjustable excavation supporting apparatus with automatic monitoring as claimed in claim 1, wherein: and a steering knuckle (11) is arranged on the fixed rod (1), and the steering knuckle (11) is fixedly connected with the bottom of the monitoring device (6).
3. An adjustable excavation supporting apparatus with automatic monitoring as claimed in claim 1, wherein: the positioning assembly (3) comprises:
the front end of the screw rod (31) is provided with a drill bit, the tail end of the screw rod is provided with a plurality of positioning holes, and the front end of the screw rod (31) is fixed in the inner wall of the foundation pit;
a compression spring (32) provided on the screw rod (31);
a positioning nut (33) arranged at the tail end of the screw rod (31);
the clamping pin (34) penetrates through the positioning hole to limit the positioning nut (33).
4. An adjustable excavation supporting apparatus with automatic monitoring as claimed in claim 1, wherein: the protective plate (5) is in a notch shape, a rotating shaft (51) is arranged at the joint of the bottom, a sliding groove (52) is arranged in the middle in the vertical direction, and the sliding groove (52) corresponds to the monitoring device (6).
5. An adjustable excavation supporting apparatus with automatic monitoring as claimed in claim 1, wherein: the monitoring device (6) comprises:
the bottom of the upright post (61) is fixed on the steering knuckle (11), and the top of the upright post is fixed on the cross rod (7);
the moving assembly (62) is movably arranged on the upright post (61);
and the transmission assembly (63) is fixed on the moving assembly (62) and is perpendicular to the upright post (61).
6. An adjustable excavation supporting apparatus with automatic monitoring as claimed in claim 5, wherein: the upright post (61) comprises a fixing post (611) and a fixing tooth path (612), the fixing tooth path (612) is arranged on one face, opposite to the protection plate (5), of the fixing post (611), and sliding ways are arranged on the rest three faces of the fixing post (611).
7. An adjustable excavation supporting apparatus with automatic monitoring as claimed in claim 5, wherein: the moving assembly (62) comprises:
the moving collar (621) is movably arranged on the fixed column (611);
a rotating wheel (622) fixed on the movable lantern ring (621) and meshed with the fixed toothed track (612);
and the handle (623) is fixed on the central axis of the rotating wheel (622).
8. Adjusting type foundation pit supporting device with automatic monitoring according to claim 5, characterized in that: the transmission assembly (63) comprises:
a telescopic shaft (631) fixed to the movable collar (621) and located on the side opposite to the runner (622);
a clamping groove (632) fixed at the extending end of the telescopic shaft (631);
the roller (633) is rotatably fixed in the clamping groove (632) and corresponds to the sliding groove (52) on the guard plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211024638.XA CN115198769B (en) | 2022-08-25 | 2022-08-25 | Adjustable foundation pit supporting device with automatic monitoring function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211024638.XA CN115198769B (en) | 2022-08-25 | 2022-08-25 | Adjustable foundation pit supporting device with automatic monitoring function |
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| CN115198769A true CN115198769A (en) | 2022-10-18 |
| CN115198769B CN115198769B (en) | 2023-06-02 |
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| CN202211024638.XA Active CN115198769B (en) | 2022-08-25 | 2022-08-25 | Adjustable foundation pit supporting device with automatic monitoring function |
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| CN113774920A (en) * | 2021-09-02 | 2021-12-10 | 宋芳 | Building foundation pit supporting and protecting device capable of monitoring inclination |
| CN215857753U (en) * | 2021-09-28 | 2022-02-18 | 周丽 | Civil engineering is safety support structure for excavation supporting |
| CN216664173U (en) * | 2021-11-08 | 2022-06-03 | 济南能源工程集团有限公司 | A interim side slope protector for municipal building |
| CN216130139U (en) * | 2021-11-17 | 2022-03-25 | 聊城九洲建设集团有限公司 | Pit foundation supporting structure in civil engineering construction process |
| CN114525792A (en) * | 2022-03-03 | 2022-05-24 | 陇东学院 | Foundation pit supporting device for civil engineering and construction method thereof |
| CN114561925A (en) * | 2022-04-08 | 2022-05-31 | 国网河南省电力公司电力科学研究院 | Electric power foundation pit safety monitoring system based on thing networking |
| CN114875932A (en) * | 2022-06-10 | 2022-08-09 | 中冶华成(武汉)工程有限公司 | Slope supporting device and slope supporting method |
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| CN115198769B (en) | 2023-06-02 |
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