阅读说明：本技术 一种基于基坑变形监测的实时测绘装置及方法 (Real-time mapping device and method based on foundation pit deformation monitoring ) 是由 尹承伟 潘玉麟 刘鹏 赵宁波 张广生 于 2021-08-13 设计创作，主要内容包括：本发明涉及基坑变形监测技术领域,公开了一种基于基坑变形监测的实时测绘装置及方法,包括底座、设置于底座上的监测机构；所述监测机构包括设置于底座上的立板、滑动设置于立板上的监测杆；所述监测杆水平设置且沿立板的一侧阵列设置有多个；所述监测杆上设置有触头；所述监测杆上设置有调节螺母；所述监测杆上套设有调节弹簧；所述调节弹簧位于所述立板和所述调节螺母之间。本发明具有提高对基坑变形的监测能力的效果。(The invention relates to the technical field of foundation pit deformation monitoring, and discloses a real-time mapping device and a real-time mapping method based on foundation pit deformation monitoring, wherein the real-time mapping device comprises a base and a monitoring mechanism arranged on the base; the monitoring mechanism comprises a vertical plate arranged on the base and a monitoring rod arranged on the vertical plate in a sliding manner; the monitoring rods are horizontally arranged and are arranged in an array along one side of the vertical plate; the monitoring rod is provided with a contact; the monitoring rod is provided with an adjusting nut; an adjusting spring is sleeved on the monitoring rod; the adjusting spring is positioned between the vertical plate and the adjusting nut. The invention has the effect of improving the monitoring capability of the foundation pit deformation.)

1. A real-time mapping device based on foundation pit deformation monitoring is characterized by comprising a base (1) and a monitoring mechanism (2) arranged on the base (1);

the monitoring mechanism (2) comprises a vertical plate (21) arranged on the base (1) and a monitoring rod (22) arranged on the vertical plate (21) in a sliding manner;

the monitoring rods (22) are horizontally arranged and are arranged in an array along one side of the vertical plate (21); a contact (23) is arranged on the monitoring rod (22); an adjusting nut (24) is arranged on the monitoring rod (22); an adjusting spring (25) is sleeved on the monitoring rod (22); the adjusting spring (25) is positioned between the vertical plate (21) and the adjusting nut (24).

2. The foundation pit deformation monitoring-based real-time surveying and mapping device as claimed in claim 1, wherein one end of the monitoring rod (22) passes through the vertical plate (21) and is fixed with a limiting block (26); the upper surface of the monitoring rod (22) is provided with a scale bar; the scale bar is positioned between a limiting block (26) on the monitoring rod (22) and the vertical plate (21); and a scale pointer (27) matched with the scale strip is arranged on the vertical plate (21).

3. The foundation pit deformation monitoring-based real-time surveying and mapping device as claimed in claim 1, wherein the base (1) is provided with a braking mechanism (4) for driving the vertical plate (21) to move along the width direction of the base (1); the base (1) is provided with a sliding chute (11) which is vertical to the length direction of the base;

the brake mechanism (4) comprises a sliding seat (41) arranged on the lower end face of the vertical plate (21), a lead screw (42) rotatably connected in the sliding groove (11), and a motor (43) arranged on one side of the base (1);

the sliding seat (41) is in threaded connection with the lead screw (42); and an output shaft of the motor (43) is fixedly connected with one end of the lead screw (42).

4. The foundation pit deformation monitoring-based real-time surveying and mapping device as claimed in claim 1, wherein a supporting mechanism (5) is arranged on the vertical plate (21); a plurality of fixing holes (211) arranged in a rectangular array are formed in the vertical plate (21); the supporting mechanism (5) comprises a telescopic assembly (6) accommodated in the fixing hole (211), a supporting net (51) arranged at one end of the telescopic assembly (6), and a driving assembly (7) arranged on the vertical plate (21) and used for driving the telescopic assembly (6) to expand.

5. The foundation pit deformation monitoring-based real-time mapping device as claimed in claim 4, wherein one monitoring rod (22) is arranged on each vertical plate (21) at the intersection of every four fixing holes (211); four edges of the vertical plate (21) are provided with a plurality of monitoring rods (22), the monitoring rods (22) at the edges of the vertical plate (21) are respectively positioned between every two rows or two rows of fixing holes (211), and four corners of the four edges of the vertical plate (21) are provided with one monitoring rod (22).

6. A foundation pit deformation monitoring-based real-time mapping device according to claim 4, wherein the telescopic assembly (6) comprises a plurality of first connecting rods (61), second connecting rods (62), third connecting rods (63) and fourth connecting rods (64); the same ends of the first connecting rod (61) and the second connecting rod (62) are hinged with each other to form a V-shaped connecting rod group; the middle parts of the third connecting rod (63) and the fourth connecting rod (64) are hinged with each other to form an X-shaped connecting rod group; two groups of V-shaped connecting rod groups are arranged side by side at intervals; the X-shaped connecting rod groups are arranged in parallel; the two groups of V-shaped connecting rod groups are respectively arranged at two ends of the multiple groups of X-shaped connecting rod groups;

third connecting rods (63) in the multiple groups of X-shaped connecting rod groups are hinged end to end; fourth connecting rods (64) in the multiple groups of X-shaped connecting rod groups are hinged end to end; a first connecting rod (61) in one group of the V-shaped connecting rods is hinged with the adjacent third connecting rod (63); and a second connecting rod (62) in one group of the V-shaped connecting rods is hinged with the adjacent fourth connecting rod (64).

7. The foundation pit deformation monitoring-based real-time surveying and mapping device as claimed in claim 6, wherein four supporting nets (51) are arranged in each fixing hole (211); one side of each supporting net (51) close to the vertical plate (21) is provided with the telescopic assembly (6);

the monitoring rod (22) positioned at the intersection of every four fixing holes (211) is connected with the four adjacent telescopic assemblies (6) through the driving assembly (7); the monitoring rod (22) positioned at the edge of the vertical plate (21) is connected with the two adjacent telescopic assemblies (6) through the driving assembly (7); monitoring rods (22) positioned at four corners of the vertical plate (21) are connected with one adjacent telescopic assembly (6) through the driving assembly (7).

8. The foundation pit deformation monitoring-based real-time mapping device as claimed in claim 7, wherein the driving assembly (7) comprises a connecting frame (71) arranged on the wall of the fixing hole (211), and a driving rod (72) arranged on the monitoring rod (22);

four connecting frames (71) are arranged in each fixing hole (211); the hinge point of one X-shaped connecting rod group is rotationally connected with the corresponding connecting frame (71); the hinge point of the other group of V-shaped connecting rod groups is rotationally connected with the corresponding supporting net (51);

one end of the driving rod (72) is fixed with one end of the monitoring rod (22), and the other end of the driving rod (72) is rotatably connected with a hinge point of the V-shaped connecting rod group.

9. A method of surveying with a surveying device according to claim 1, characterized in that the method comprises the steps of:

s1, placing the surveying and mapping device in the foundation pit, enabling the base (1) to be close to the inner wall of the foundation pit, positioning the base (1), and enabling the contact (23) on each monitoring rod (22) to be abutted against the side wall of the foundation pit by rotating the adjusting nut (24) on each monitoring rod (22) so as to keep each adjusting spring (25) in a compression state;

s2, recording the measured foundation pit deformation distance value on each monitoring rod (22) every 30 min;

s3, comparing the deformation distance values of the foundation pits of the monitoring rods (22) on the same vertical line, and obtaining the displacement value variation quantity through the difference value of the deformation distance values of the foundation pits of two adjacent monitoring rods (22);

and S4, according to the increasing trend of the displacement value variation, when the increasing trend of the displacement value variation is overlarge, accurate judgment can be made, the deformation section can be fed back in time, and time is provided for maintenance of the support and evacuation of personnel.

Technical Field

The invention relates to the technical field of foundation pit deformation monitoring, in particular to a real-time surveying and mapping device and method based on foundation pit deformation monitoring.

Background

In the excavation process of the foundation pit, a large amount of materials are stacked around the foundation pit due to the limitation of the field, the height of the pit bottom is uneven due to layered excavation, or the foundation pit is in an asymmetric stress state due to the change of geological conditions of an excavation section, so that the foundation pit is not uniformly deformed.

Therefore, when construction is carried out in a foundation pit, the deformation of the foundation pit is often required to be monitored so as to ensure the safety of construction, generally, the total station is mostly used for monitoring the deformation of the foundation pit, and when the total station is used for measuring, the instrument is required to be frequently erected.

In view of the above-mentioned related technologies, the inventor of the present application finds that at least the following technical problems exist in the process of implementing the technical solution of the invention in the embodiment of the present application: because the monitoring points are limited, when the support is deformed, the support cannot be positioned accurately in time, the deformed section can be found visually after damage is generated, and the monitoring effect is not obvious.

Disclosure of Invention

The embodiment of the application provides a real-time mapping device and method based on foundation pit deformation monitoring, solves the problem that monitoring and positioning of foundation pit deformation are not accurate in the prior art, and achieves the effect of improving monitoring of foundation pit deformation.

The embodiment of the application provides a real-time mapping device based on foundation pit deformation monitoring, which comprises a base and a monitoring mechanism arranged on the base; the monitoring mechanism comprises a vertical plate arranged on the base and a monitoring rod arranged on the vertical plate in a sliding manner; the monitoring rods are horizontally arranged and are arranged in an array along one side of the vertical plate; the monitoring rod is provided with a contact; the monitoring rod is provided with an adjusting nut; an adjusting spring is sleeved on the monitoring rod; the adjusting spring is positioned between the vertical plate and the adjusting nut.

Furthermore, one end of the monitoring rod penetrates through the vertical plate and is fixed with a limiting block; the upper surface of the monitoring rod is provided with a scale bar; the scale bar is positioned between the limiting block on the monitoring rod and the vertical plate; and a scale pointer matched with the scale strip is arranged on the vertical plate.

Furthermore, a brake mechanism for driving the vertical plate to move along the width direction of the base is arranged on the base; the base is provided with a sliding chute which is vertical to the length direction of the base; the brake mechanism comprises a sliding seat arranged on the lower end face of the vertical plate, a lead screw rotatably connected in the sliding groove and a motor arranged on one side of the base; the sliding seat is connected to the lead screw in a threaded manner; and an output shaft of the motor is fixedly connected with one end of the lead screw.

Further, a supporting mechanism is arranged on the vertical plate; a plurality of fixing holes arranged in a rectangular array are formed in the vertical plate; the supporting mechanism comprises a telescopic assembly accommodated in the fixed hole, a supporting net arranged at one end of the telescopic assembly, and a driving assembly arranged on the vertical plate and used for driving the telescopic assembly to expand.

Furthermore, one monitoring rod is arranged on the vertical plate and positioned at the intersection of every four fixing holes; the monitoring device is characterized in that a plurality of monitoring rods are arranged at four edges of the vertical plate, the monitoring rods at the edges of the vertical plate are respectively positioned between every two rows or two rows of fixing holes, and one monitoring rod is arranged at four corners of the four edges of the vertical plate.

Further, the telescopic assembly comprises a plurality of first connecting rods, second connecting rods, third connecting rods and fourth connecting rods; the same ends of the first connecting rod and the second connecting rod are hinged with each other to form a V-shaped connecting rod group; the middle parts of the third connecting rod and the fourth connecting rod are hinged with each other to form an X-shaped connecting rod group; two groups of V-shaped connecting rod groups are arranged side by side at intervals; the X-shaped connecting rod groups are arranged in parallel; the two groups of V-shaped connecting rod groups are respectively arranged at two ends of the multiple groups of X-shaped connecting rod groups; third connecting rods in the multiple groups of X-shaped connecting rod groups are hinged end to end; the fourth connecting rods in the multiple groups of X-shaped connecting rod groups are hinged end to end; a first connecting rod in the V-shaped connecting rod group is hinged with the adjacent third connecting rod; and the second connecting rod in one group of the V-shaped connecting rod groups is hinged with the adjacent fourth connecting rod.

Furthermore, four supporting nets are arranged in each fixing hole; one side of each supporting net close to the vertical plate is provided with the telescopic assembly; the monitoring rod positioned at the intersection of every four fixing holes is connected with the four adjacent telescopic assemblies through the driving assembly; the monitoring rod positioned at the edge of the vertical plate is connected with the two adjacent telescopic assemblies through the driving assembly; the monitoring rods positioned at the four corners of the vertical plate are connected with one adjacent telescopic component through the driving component.

Furthermore, the driving assembly comprises a connecting frame arranged on the hole wall of the fixing hole and a driving rod arranged on the monitoring rod; four connecting frames are arranged in each fixing hole; the hinge point of one X-shaped connecting rod group is rotationally connected with the corresponding connecting frame; the hinge point of the other group of V-shaped connecting rod groups is rotationally connected with the corresponding supporting net; one end of the driving rod is fixed to the end portion, close to the limiting block, of the monitoring rod, and the other end of the driving rod is connected with the hinged point of the V-shaped connecting rod group in a rotating mode.

The embodiment of the application also provides a real-time mapping method based on foundation pit deformation monitoring, which comprises the following steps: s1, placing the surveying and mapping device in the foundation pit, enabling the base to be close to the inner wall of the foundation pit, positioning the base, enabling the contact on each monitoring rod to be abutted against the side wall of the foundation pit by rotating the adjusting nut on each monitoring rod, and keeping each adjusting spring in a compression state; s2, recording the deformation distance value of the foundation pit measured on each monitoring rod every 30 min; s3, comparing the deformation distance values of the foundation pits of the monitoring rods on the same vertical line, and obtaining the displacement value variation quantity through the difference value of the deformation distance values of the foundation pits of two adjacent monitoring rods; and S4, according to the increasing trend of the displacement value variation, when the increasing trend of the displacement value variation is overlarge, accurate judgment can be made, the deformation section can be fed back in time, and time is provided for maintenance of the support and evacuation of personnel.

The technical scheme provided in the embodiment of the application at least has the following technical effects or advantages:

1. owing to adopted mapping device's structure, so can be through being fixed in foundation ditch lateral wall one side with the base, through rotating adjusting nut, make contact on every monitoring lever all contradict with the lateral wall of foundation ditch, adjusting spring on every monitoring lever all is in the state that the atress was tightened simultaneously, when the foundation ditch lateral wall produces outside deformation, every monitoring lever is according to the deformation degree of the foundation ditch lateral wall of contradicting along one section distance of riser horizontal displacement, be convenient for directly perceivedly record the deformation degree of foundation ditch lateral wall different positions department, when the foundation ditch lateral wall produces inward deformation again, adjusting spring on the monitoring lever can relax, the monitoring lever is to the direction removal that is close to the foundation ditch lateral wall, effectively solved among the prior art to the inaccurate problem of foundation ditch deformation monitoring location, and then realized improving the monitoring effect to the foundation ditch deformation.

2. Owing to adopted arrestment mechanism's structure, so be favorable to adjusting the position of riser according to actual building site in service behavior for a plurality of monitoring levers on the riser are more convenient for laminate the lateral wall of foundation ditch, have effectively solved among the prior art problem that mapping device's application scope is little, and then have realized improving mapping device's application scope.

3. Due to the adoption of the structure of the supporting mechanism, the side wall of the foundation pit can be effectively supported when the deformation mutation is too large, the possibility of foundation pit collapse is reduced, the safety of foundation pit construction can be improved, the problem of low safety during foundation pit deformation surveying and mapping in the prior art is effectively solved, and the improvement of the safety performance during foundation pit deformation monitoring is realized.

4. Due to the adoption of the structure of the driving assembly, when the monitoring rod is extruded by the side wall of the foundation pit, the supporting net in the supporting mechanism can be automatically driven to stretch out to one side close to the side wall of the foundation pit, the side wall of the foundation pit is supported and protected, the possibility of sudden collapse of the side wall of the foundation pit is reduced, and the safety of foundation pit protection is further improved.

Drawings

Fig. 1 is a schematic structural view of the whole in the embodiment of the present application;

fig. 2 is a schematic structural view of a support mechanism in an embodiment of the present application;

FIG. 3 is an enlarged schematic view at A in FIG. 1;

FIG. 4 is a schematic view of the support structure of the embodiment of the present application;

in the figure: 1. a base; 11. a chute; 12. a dovetail groove; 2. a monitoring mechanism; 21. a vertical plate; 211. a fixing hole; 22. a monitoring lever; 23. a contact; 24. adjusting the nut; 25. adjusting the spring; 26. a limiting block; 27. a scale pointer; 28. a micro ranging sensor; 3. a positioning mechanism; 31. a fixing plate; 32. a cylinder; 33. inserting a column; 4. a brake mechanism; 41. a slide base; 42. a lead screw; 43. a motor; 44. a dovetail block; 5. a support mechanism; 51. a support net; 6. a telescoping assembly; 61. a first link; 62. a second link; 63. a third link; 64. a fourth link; 7. a drive assembly; 71. a connecting frame; 72. a drive rod.

Detailed Description

The embodiment of the application discloses provides a real-time mapping device and method based on foundation ditch deformation monitoring, through setting up a plurality of monitoring rods 22, settle base 1 in the foundation ditch lateral wall department of required monitoring, adjust the position of riser 21, rethread rotates adjusting nut 24, make every monitoring rod 22 all can contradict with the lateral wall of foundation ditch, and adjusting spring 25 on every monitoring rod 22 all is in the state that the atress was tightened, can extrude contact 23 when the foundation ditch outwards warp, make adjusting spring 25 compressed, the deflection can be measured to the displacement change on the monitoring rod 22, when the foundation ditch inwards warp, make adjusting spring 25 relax, drive monitoring rod 22 and remove to being close to foundation ditch lateral wall department, the deflection of foundation ditch is monitored out. The problem of among the prior art to the monitoring location of foundation ditch deformation inaccurate is solved, realized improving the effect to foundation ditch deformation monitoring.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

On the one hand, the embodiment of the application discloses a real-time mapping device based on foundation pit deformation monitoring. Referring to fig. 1, a real-time mapping device based on foundation pit deformation monitoring comprises a rectangular base 1, wherein one side wall of the long side of the base 1 is parallel to the side wall of the foundation pit to be monitored. Monitoring mechanism 2 is installed to the up end of base 1, can in time monitor the deformation situation of foundation ditch lateral wall, in time feed back everywhere monitoring information.

Referring to fig. 1, positioning mechanism 3 is installed at the both ends of base 1, when needs carry out real-time survey and drawing to the lateral wall of somewhere foundation ditch, fixes base 1 through positioning mechanism 3 for this monitoring mechanism 2 can aim at the lateral wall of foundation ditch and carry out stable monitoring, and can carry out certain protection to the lateral wall of foundation ditch. Positioning mechanism 3 includes fixed plate 31, cylinder 32 and inserts post 33, fixed plate 31 is provided with two, two fixed plates 31 are fixed in the both ends of base 1 respectively, cylinder 32 fixed mounting is on fixed plate 31, insert the upper end of post 33 and the piston rod fixed connection of cylinder 32, through driving actuating cylinder 32, can drive the pointed end of inserting post 33 and peg graft at the bottom of the hole of foundation ditch, because the bottom of the hole matrix of foundation ditch is comparatively stable, when the foundation ditch warp, monitoring mechanism 2 has certain protective capacities.

Referring to fig. 1 and 2, monitoring mechanism 2 includes riser 21, monitoring rod 22, and the length direction of riser 21 is unanimous with the length direction of base 1, and riser 21 can slide along the width direction of base 1, and monitoring rod 22 level sets up to one side along riser 21 is provided with a plurality ofly, and a plurality of monitoring rods 22 are the setting of rectangular array. The monitoring rod 22 is inserted on the vertical plate 21 and can be arranged along the vertical plate 21 in a sliding mode, a contact 23 is fixedly mounted at one end, close to the side wall of the foundation pit, of the monitoring rod 22, an adjusting nut 24 is connected to the position, located between the contact 23 and the vertical plate 21, of the monitoring rod 22 in a threaded mode, an adjusting spring 25 is sleeved on the monitoring rod 22, and the adjusting spring 25 is located between the vertical plate 21 and the adjusting nut 24. All can adjust to the different planes in foundation ditch for contact 23 can support the lateral wall in tight foundation ditch. The other end of monitoring lever 22 passes riser 21 and is fixed with stopper 26, and the upper surface shaping at monitoring lever 22 has the scale bar, and the scale bar is located the position department between stopper 26 and the riser 21 on the monitoring lever 22, is fixed with on the riser 21 with scale bar complex scale pointer 27, for the convenience of in time feeding back the scale interval change on the scale bar, one side fixed mounting that keeps away from the foundation ditch lateral wall at riser 21 has a plurality of miniature range finding sensors 28 with the scale bar one-to-one. Zero point on the scale strip is located the center department of scale strip, when surveying and mapping in real time, through rotating adjusting nut 24, make contact 23 support tightly with the lateral wall of foundation ditch, adjusting spring 25 is compressed, be in the state of tightening, scale pointer 27 points to zero point department, the scale that lies in between zero point and riser 21 on the scale strip is the negative direction scale, the scale that lies in between zero point and stopper 26 on the scale strip is positive direction scale, the negative direction scale represents the foundation ditch lateral wall to the deformation of inwards caving in promptly, the deformation of outwards collapsing of foundation ditch lateral wall is represented to the positive direction scale. Set up a plurality of fixed orificess 211 that are the rectangular array and distribute on the riser 21, on the riser 21 and be located every four crossing departments of fixed orificess 211 and all be provided with a monitoring rod 22, four edges of riser 21 all are provided with a plurality of monitoring rods 22, and a plurality of monitoring rods 22 that are located riser 21 edge are located every two rows or two positions between the fixed orificess 211 respectively, and are located four corners on four edges of riser 21 and all are provided with a monitoring rod 22.

Referring to fig. 1 and 3, in order to facilitate adjustment of the distance between the vertical plate 21 and the side wall of the foundation pit, the brake mechanism 4 is installed on the base 1 and used for driving the vertical plate 21 to move along the width direction of the base 1, so that the monitoring rods 22 on the vertical plate 21 can be close to the side wall of the foundation pit, and the monitoring rods 22 are conveniently adjusted. Brake mechanism 4 includes slide 41, lead screw 42, motor 43, slide 41 fixed mounting is in the lower terminal surface of riser 21 and is located its central point department, base 1 is last to have seted up rather than length direction mutually perpendicular's spout 11, two dovetail 12 have been seted up on the base 1, the extending direction of two dovetail 12 is unanimous with the extending direction of spout 11, and two dovetail 12 use spout 11 to set up in the up end of base 1 as central symmetry, the lower terminal surface fixed mounting of riser 21 has two dovetail blocks 44, dovetail block 44 sliding connection is in the dovetail 12 that corresponds, a stability for improving riser 21 installation. The lead screw 42 is rotatably connected in the chute 11, the length direction of the lead screw 42 is consistent with that of the chute 11, the motor 43 is fixedly installed on one side of the base 1 far away from the side wall of the foundation pit, and the output shaft of the motor 43 is fixedly connected with one end of the lead screw 42. The sliding base 41 is connected to the screw rod 42 through a thread, when the motor 43 rotates, the screw rod 42 can be driven to rotate, and the sliding base 41 connected to the screw rod 42 through a thread moves along the length direction of the sliding groove 11 to drive the vertical plate 21 to move.

Referring to fig. 1, 2 and 4, in order to improve the supporting effect of the monitoring mechanism 2 on the deformation of the foundation pit and to improve the safety of the construction in the foundation pit, a supporting mechanism 5 is mounted on the vertical plate 21. The supporting mechanism 5 comprises a telescopic assembly 6, a supporting net 51 and a driving assembly 7. The supporting nets 51 are located in the fixing holes 211 and located at positions, close to the side wall of the foundation pit, of the vertical plate 21, four supporting nets 51 are arranged in each fixing hole 211, and when the four supporting nets 51 are located in the fixing holes 211, the areas of the four supporting nets 51 are consistent with the areas of the fixing holes 211. Drive assembly 7 is located the position that the foundation ditch lateral wall was kept away from to riser 21 for drive flexible subassembly 6 expandes or contracts, and flexible subassembly 6 is accomodate in fixed orifices 211, and one side that every supporting network 51 kept away from the foundation ditch lateral wall all is connected with a flexible subassembly 6, and flexible subassembly 6's the other end is connected with the drive assembly 7 that corresponds. The monitoring rods 22 located at the intersection of every four fixing holes 211 are connected with the four adjacent telescopic assemblies 6 through the driving assemblies 7, the monitoring rods 22 located at the edge of the vertical plate 21 are connected with the two adjacent telescopic assemblies 6 through the driving assemblies 7, and the monitoring rods 22 located at the four corners of the vertical plate 21 are connected with the adjacent telescopic assemblies 6 through the driving assemblies 7.

Referring to fig. 1 and 2, the telescopic assembly 6 includes a plurality of first connecting rods 61, second connecting rods 62, third connecting rods 63 and fourth connecting rods 64, the same ends of the first connecting rods 61 and the second connecting rods 62 are hinged to each other to form a V-shaped linkage, the middle portions of the third connecting rods 63 and the fourth connecting rods 64 are hinged to each other to form an X-shaped linkage, the V-shaped linkages are arranged in two groups at intervals side by side, the X-shaped linkages are arranged in multiple groups side by side, the two groups of V-shaped linkages are respectively arranged at two ends of the multiple groups of X-shaped linkages, the third connecting rods 63 in the multiple groups of X-shaped linkages are hinged end to end, the fourth connecting rods 64 in the multiple groups of X-shaped linkages are hinged end to end, the first connecting rods 61 in one group of V-shaped linkages are hinged to the adjacent third connecting rods 63, and the second connecting rods 62 in one group of V-shaped linkages are hinged to the adjacent fourth connecting rods 64.

Referring to fig. 1, 2 and 4, each driving assembly 7 is connected to a corresponding one of the telescopic assemblies 6, each driving assembly 7 includes a connecting frame 71 and a driving rod 72, the connecting frame 71 is fixedly mounted on the hole wall of the fixing hole 211, one end of the driving rod 72 is fixedly connected to the end of the monitoring rod 22 at the corresponding position, and the driving rod 72 is close to the position of the limiting block 26. Four connecting frames 71 are arranged in each fixing hole 211, and the four connecting frames 71 are matched with the four telescopic assemblies 6 in the fixing holes 211. In the same telescopic assembly 6, the hinge point of one X-shaped linkage group is rotatably connected with the corresponding connecting frame 71, the hinge point of one V-shaped linkage group is rotatably connected with one end of the driving rod 72, and the hinge point of the other V-shaped linkage group is rotatably connected with the corresponding supporting net 51. When monitoring rod 22 receives the outside extrusion that warp of foundation ditch lateral wall, can drive monitoring rod 22 and remove to the one side of keeping away from the foundation ditch lateral wall, when monitoring rod 22 removed, can stimulate a set of pin joint rather than the V-arrangement linkage of being connected and remove to the direction of keeping away from the foundation ditch lateral wall, and the articulated point of an X-arrangement linkage of this extensible component 6 rotates with the link 71 that corresponds and is connected, make the extension of the whole expansion of extensible component 6, and then can make another group drive a protection net 51 and remove to the one side that is close to the foundation ditch lateral wall rather than the V-arrangement linkage of being connected, strut the foundation ditch lateral wall, improve foundation ditch construction's security.

On the other hand, the embodiment of the application discloses a real-time mapping method based on foundation pit deformation monitoring. Referring to fig. 1-4, a real-time mapping method based on foundation pit deformation monitoring includes the following steps.

S1, installing the surveying and mapping device in the foundation pit, and adjusting the surveying and mapping device.

S11, firstly, placing the surveying and mapping device in a foundation pit, moving the base 1 to enable the base 1 to be close to the inner wall of the foundation pit to be monitored, driving the air cylinder 32 to enable the inserting column 33 to be inserted at the bottom of the foundation pit in an inserting mode, and positioning the base 1.

S12, starting the motor 43, driving the screw rod 42 to rotate through the motor 43, so that the sliding seat 41 moves along the length direction of the sliding groove 11, and adjusting the vertical plate 21, so that the vertical plate 21 is close to the side wall of the foundation pit.

S13, after the vertical plate 21 is positioned, the adjusting nut 24 on each monitoring rod 22 is rotated, so that the contact 23 on each monitoring rod 22 is abutted against the side wall of the foundation pit, each adjusting spring 25 is kept in a pressing state, and the scale pointer 27 indicates the zero point on the scale bar.

And S2, when recording every 30min, feeding back the foundation pit deformation distance value measured on each monitoring rod 22 through the micro distance measuring sensor 28, and recording the foundation pit deformation distance value.

And S3, taking 30min as a time period, comparing the deformation distance values of the foundation pits of the monitoring rods 22 positioned on the same vertical line in every two adjacent time periods, obtaining the displacement value variation through the difference value of the deformation distance values of the foundation pits of the two adjacent monitoring rods 22, and drawing a linear dot graph of the displacement value variation according to the time period as a unit.

And S4, acquiring the increasing trend of the displacement value variation according to the drawn dot diagram, judging the increasing trend of the displacement variation, and feeding back the information of the deformation section in time when the increasing trend of the displacement value variation is overlarge to provide time for maintenance of the support and evacuation of personnel.

The working principle of the embodiment of the application is as follows: through with mapping device fixed mounting in the foundation ditch for mapping device corresponds with the foundation ditch lateral wall that needs survey and drawing. And then the position of the vertical plate 21 is adjusted through the braking mechanism 4, so that the vertical plate 21 is close to the side wall of the foundation pit, and the contacts 23 of most of the monitoring rods 22 are all abutted against the side wall of the foundation pit. The degree is displayed by observing the scale bar on each monitoring rod 22, the state of the adjusting spring 25 is changed by rotating the adjusting nut 24, so that the adjusting spring 25 is in a pressing state, and meanwhile, the degree on the scale bar is observed, so that the scale pointer 27 points to a zero point. A plurality of adjustable monitoring rod 22 can be surveyed and drawn to the foundation ditch and the foundation ditch unevenness's of difference lateral wall, has improved the application scope of this device greatly. After the monitoring rods 22 are adjusted, the deformation distance value of the foundation pit is measured in real time through the feedback monitoring rods 22, and the deformation distance value of the foundation pit is analyzed. And, the supporting mechanism 5 of installation on the riser 21 can make rapid reaction to the foundation ditch deformation, strut the foundation ditch, be favorable to the destruction that the foundation ditch deformation brought that significantly reduces, and can learn the deformation degree of foundation ditch according to foundation ditch deformation distance value, withdraw for the maintenance of strutting and personnel and provide time for this real-time mapping device can improve the fail safe nature of strutting the monitoring system, and this device's simple structure can recycle, has effectively ensured constructor's safety.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can substitute or change the technical solution and its concept of the present application within the technical scope disclosed in the present application, and shall be covered by the scope of the present application.