CN111765340A

CN111765340A - Foundation pit engineering monitoring device for high-rise building

Info

Publication number: CN111765340A
Application number: CN202010651179.2A
Authority: CN
Inventors: 卢伟锦
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2020-10-13

Abstract

The invention discloses a foundation pit engineering monitoring device for high-rise buildings, which belongs to the technical field of foundation pit engineering monitoring and comprises a base, wherein the top of a movable block extends to the outer wall of the top of the base, the outer wall of the top of the base is provided with a groove matched with the movable block, the center of the outer wall of the top of the base is provided with a main sleeve, the top of the main sleeve is movably inserted with a lifting rod, the power end of the top of a motor is provided with a lead screw, the outer wall of the lead screw is sleeved with a lifting plate in a threaded manner, the outer walls of the front side and the rear side of the lifting plate are provided with slide blocks, the motor can drive the lead screw to rotate, the lifting plate can do lifting motion under the limitation of the slide blocks and the groove by the rotation of the lead screw, the ground clearance of a monitor body is changed, multi, and the mechanical adjustment is more accurate than manual adjustment.

Description

Foundation pit engineering monitoring device for high-rise building

Technical Field

The invention relates to the technical field of foundation pit engineering monitoring, in particular to a foundation pit engineering monitoring device for a high-rise building.

Background

Common horizontal displacement monitoring devices and vertical displacement monitoring devices are installed separately in the engineering at present, construct single machinery, the flexibility is poor, horizontal displacement is fixed in the department of waiting to monitor through fixed connection's mode with the prism promptly, the angle is unadjustable during the installation, need the manual work to lift up the monitoring when carrying out vertical displacement monitoring, consume a large amount of time and can't guarantee the precision of monitoring data, for this reason, we propose a foundation ditch engineering monitoring devices for high-rise building.

Disclosure of Invention

The invention aims to provide a foundation pit engineering monitoring device for a high-rise building, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a foundation pit engineering monitoring device for high-rise buildings comprises a base, wherein four corners of the outer wall of the top of the base are respectively provided with a support rod through an articulated piece, the other end of the support rod is fixedly provided with a connecting pipe, the bottom of the connecting pipe is fixedly provided with a cushion block, the inner cavity of the connecting pipe is in threaded sleeve connection with an adjusting screw rod, the bottom of the adjusting screw rod extends to the outer wall of the bottom of the cushion block and is fixedly provided with a soil breaking cone, the left side and the right side of the inner wall of the bottom of the base are respectively provided with a movable groove, a movable block is arranged in the movable groove in a sliding manner, the top of the movable block extends to the outer wall of the top of the base, the outer wall of the top of the base is provided with a groove matched with the movable block, the center of the outer wall of the top, the bottom of the inclined support rod is hinged to the top of the movable block, a bidirectional lead screw is installed on the inner wall of the left side of the base through a bearing, a handle is arranged at the right end of the bidirectional lead screw and extends to the outer wall of the right side of the base, the outer wall of the right side of the base is connected with the bidirectional lead screw through the bearing, the movable block is sleeved on the bidirectional lead screw in a threaded manner, a rotary monitoring assembly is fixedly installed at the top of the lifting rod, a positioning pin is movably inserted into the top of the front end face of the main sleeve, and a.

Further, rotation type monitoring subassembly includes the mount pad of fixed mounting at the lifter top, mount pad top outer wall center is equipped with the movable groove, and the roating seat is installed through the bearing to movable groove hoop inner wall, roating seat top outer wall is equipped with over-and-under type monitoring subassembly, the fixed cover of roating seat hoop outer wall is equipped with outer ring gear, the welding of mount pad left side outer wall bottom has the mounting panel, the mounting panel top is equipped with the motor, the gear is installed to motor top power end, the gear meshes with the relative one side of outer ring gear.

Further, over-and-under type monitoring subassembly includes two sets of installing frames about the roating seat top, installing frame left side outer wall four corners all is equipped with the screw hole, and screw hole internal thread cover is equipped with fixed screw, and is two sets of installing frame bottom inner wall is equipped with the drive mounting panel, drive mounting panel top outer wall four corners all is equipped with the screw hole, and screw hole internal thread cover is equipped with fixing bolt, installing frame and roating seat all are equipped with the screw with fixing bolt matched with, the motor is installed at drive mounting panel top, the lead screw is installed to motor top power end, lead screw outer wall thread cover is equipped with the lifter plate, both sides outer wall all is equipped with the slider around the lifter plate, and is two sets of the junction of both sides all is equipped with the fluting with slider matched with around the installing frame, lifter plate left.

Further, the monitoring assembly comprises a mounting shell which is sleeved at the left end of the lifting plate in a threaded manner, sliding grooves are formed in the rear sides of the inner walls of the top and the bottom of the mounting shell, movable plates are arranged in the two groups of sliding grooves in a sliding manner, the outer wall of the rear side of the movable plate is uniformly provided with ejection springs, the rear ends of the ejection springs are connected with the inner wall of the rear side of the mounting shell, the mounting shell is movably inserted to the front end of the inner wall, the movable plate and the inner side of the mounting ring are provided with a monitor body, the monitoring head of the front end surface of the monitor body passes through the inner cavity of the mounting ring and extends to the front end surface of the mounting ring, the front end surfaces of the outer walls of the top and the bottom of the mounting shell are movably inserted with inserted rods, the opposite ends of the two groups of inserted rods are fixedly provided with pull plates, the pull plate is connected with the insertion rod through the connecting hole, the front side and the rear side of the joint of the pull plate and the insertion rod are respectively provided with a return spring, the other end of each return spring is fixedly connected with the outer wall of the installation shell, and the outer wall of the installation ring is provided with a positioning hole matched with the insertion rod.

Furthermore, two sets of the relative one end of inserted bar all installs the ball through rotating the connecting piece, the collar of installing ring is equipped with the chamfer with inserted bar matched with to the outer wall rear end.

Furthermore, the top of the outer wall of the left side and the top of the outer wall of the right side of the main sleeve are both provided with U-shaped clamping plates, and the inclined support rods are located in inner cavities of the U-shaped clamping plates.

Furthermore, the outer wall of the bottom of the base is provided with a moisture-proof anticorrosive layer.

Further, the foundation pit engineering monitoring device and method for the high-rise building comprises the following steps:

s1: firstly, inserting a monitor body into an installation shell, then inserting an installation ring, fixing the monitor body in the installation shell by the installation ring, and then screwing the installation shell into the left end of the lifting plate according to the use condition, wherein the installation angle is determined according to the use condition;

s2: winding a steel cable of hoisting equipment on the U-shaped clamping plate, then placing the base in the foundation pit through the hoisting equipment, then turning over the support rod to enable the adjusting screw rod to be inserted into the inner wall of the bottom of the foundation pit, fixing the base, and selecting the bidirectional screw rod according to the depth of the foundation pit at the moment to enable the maximum rising height of the monitor body and the top of the annular inner wall of the foundation pit to be in the same horizontal plane;

s3: after S1 and S2 are installed, the motor can drive the screw rod to rotate, so that the lifting plate slides up and down under the limit of the sliding block, the ground clearance of the monitor body is changed, the motor drives the gear, the outer gear ring and the rotating seat to rotate, the monitor body is driven to rotate, the moving range of the monitor body is enlarged, a plurality of groups of data are measured to analyze, and the detection precision can be improved.

Compared with the prior art, the invention has the beneficial effects that:

1. the motor drives the gear, the outer gear ring, the rotating seat and the lifting type monitoring assembly to rotate, the direction of the monitoring assembly is changed, the moving range of the monitoring assembly is enlarged, multi-point monitoring can be carried out, and the accuracy of monitoring data can be improved by taking an average value;

2. the lead screw is installed to motor top power end, lead screw outer wall thread bush is equipped with the lifter plate, both sides outer wall all is equipped with the slider around the lifter plate, it is rotatory that the motor can drive the lead screw, the lead screw is rotatory to make the lifter plate be elevating movement under slider and grooved restriction, change the terrain clearance of monitor body, carry out the ascending multiple spot monitoring of vertical side, the balancing weight can maintain the balance at both ends around the lifter plate, the monitoring flow all can improve external electric cabinet and control, need not manual operation, save physical power, and the relative manual regulation of mechanical adjustment say the precision higher.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a rotary monitoring assembly according to the present invention;

FIG. 3 is a schematic view of a lift monitoring assembly according to the present invention;

FIG. 4 is a schematic view of a monitoring assembly according to the present invention.

In the figure: 1. a base; 101. a moisture-proof and corrosion-resistant layer; 2. a support bar; 3. a connecting pipe; 4. cushion blocks; 5. adjusting the screw rod; 6. a movable block; 7. a main bushing; 8. a lifting rod; 9. a pipe clamp; 10. a diagonal brace; 11. positioning pins; 12. a U-shaped clamping plate; 13. a rotary monitoring assembly; 14. a bidirectional screw rod; 15. a rotating base; 16. an outer ring gear; 17. mounting a plate; 18. a motor; 19. a gear; 20. a mounting seat; 21. a lift monitoring assembly; 22. installing a frame; 23. driving the mounting plate; 24. fixing the bolt; 25. a screw hole; 26. a motor; 27. a screw rod; 28. a lifting plate; 29. a slider; 30. a monitoring component; 301. mounting a shell; 302. a movable plate; 303. ejecting a spring; 304. a mounting ring; 305. inserting a rod; 306. pulling a plate; 307. a return spring; 308. chamfering; 309. a monitor body; 31. and a balancing weight.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that: a foundation pit engineering monitoring device for high-rise buildings, please refer to figure 1, comprising a base 1, wherein four corners of the outer wall of the top of the base 1 are all provided with a support rod 2 through an articulated piece, the other end of the support rod 2 is fixedly provided with a connecting pipe 3, the bottom of the connecting pipe 3 is fixedly provided with a cushion block 4, the inner cavity of the connecting pipe 3 is sheathed with an adjusting screw rod 5 in a threaded manner, the adjusting screw rod 5 is inserted into soil at the bottom of the foundation pit to fix the base 1, the area of the cushion block 4 is larger, the stress area can be increased, the fixing effect on the base 1 is improved, the bottom of the adjusting screw rod 5 extends to the outer wall of the bottom of the cushion block 4 and is fixedly provided with a soil breaking cone, the left side and the right side of the inner wall of the bottom of the base 1 are both provided with movable grooves, movable blocks 6 are, a lifting rod 8 is movably inserted at the top of the main sleeve 7, a pipe clamp 9 is sleeved at the top of the joint of the annular outer wall of the lifting rod 8 and the main sleeve 7, inclined support rods 10 are hinged to the outer walls of the left side and the right side of the pipe clamp 9, the bottoms of the inclined support rods 10 are hinged to the top of the movable block 6, a bidirectional screw rod 14 is installed on the inner wall of the left side of the base 1 through a bearing, a handle is arranged at the right end of the bidirectional screw rod 14 and extends to the outer wall of the right side of the base 1, the outer wall of the right side of the base 1 is connected with the bidirectional screw rod 14 through a bearing, the movable block 6 is sleeved on the bidirectional screw rod 14 in a threaded mode, a rotary monitoring assembly 13 is fixedly installed at the top of the lifting rod 8, a positioning pin 11 is movably inserted at the top of the front;

referring to fig. 2, the rotary monitoring assembly 13 includes a mounting base 20 fixedly mounted on the top of the lifting rod 8, a movable groove is disposed in the center of the outer wall of the top of the mounting base 20, a rotary base 15 is mounted on the inner circumferential wall of the movable groove through a bearing, a lifting monitoring assembly 21 is disposed on the outer wall of the top of the rotary base 15, an outer gear ring 16 is fixedly sleeved on the outer circumferential wall of the rotary base 15, a mounting plate 17 is welded to the bottom of the outer wall of the left side of the mounting base 20, a motor 18 is disposed on the top of the mounting plate 17, a gear 19 is mounted on the power end of the top of the motor 18, the gear 19 is engaged with one side of the outer gear ring 16 opposite to the gear 19, the outer gear ring 16, the motor 18 drives the gear 19, the outer gear ring 16, the rotary base 15 and the lifting monitoring assembly 21 to rotate, the direction of the monitor body, the electric cabinet is connected with an external power supply and controls the starting and stopping of the electrical equipment through the electric cabinet;

referring to fig. 2-3, the lifting monitoring assembly 21 includes two sets of mounting frames 22 on the left and right of the top of the rotary base 15, screw holes are formed in four corners of the outer wall of the left side of the mounting frame 22, fixing screws are sleeved in the screw holes, driving mounting plates 23 are arranged on the inner walls of the bottoms of the two sets of mounting frames 22, screw holes are formed in four corners of the outer wall of the top of the driving mounting plates 23, fixing bolts 24 are sleeved in the screw holes, screw holes 25 matched with the fixing bolts 24 are formed in the mounting frames 22 and the rotary base 15, the two sets of mounting frames 22 are pre-fixed through the fixing bolts 24 and then fixed through the screws at the four corners, a motor 26 is mounted on the top of the driving mounting plates 23, a lead screw 27 is mounted at a power end of the top of the motor 26, a lifting plate 28 is sleeved on the outer wall of the lead screw 27, the left end and the right end of the lifting plate 28 are respectively provided with a monitoring component 30 and a balancing weight 31, the motor 26 can drive the screw rod 27 to rotate, the screw rod 27 rotates to enable the lifting plate 28 to do lifting motion under the limitation of the sliding block 29 and the slot, and the balancing weight 31 can maintain the balance of the front end and the rear end of the lifting plate 28;

referring to fig. 4, the monitoring assembly 30 includes a mounting housing 301 threaded on the left end of the lifting plate 28, sliding grooves are formed on the rear sides of the top and bottom inner walls of the mounting housing 301, a movable plate 302 is slidably disposed in the two groups of sliding grooves, an ejection spring 303 is uniformly disposed on the outer wall of the rear side of the movable plate 302, the rear end of the ejection spring 303 is connected to the inner wall of the rear side of the mounting housing 301, a mounting ring 304 is movably inserted into the front end of the inner wall of the mounting housing 301, a monitor body 309 is disposed inside the movable plate 302 and the mounting ring 304, a monitoring head on the front end surface of the monitor body 309 extends to the front end surface of the mounting ring 304 through the inner cavity of the mounting ring 304, insertion rods 305 are movably inserted into the front end surfaces of the top and bottom outer walls of the mounting housing 301, a pull plate 306 is fixed on one end of the two groups of insertion rods 305 opposite to each other, return springs 307, the outer wall of the mounting ring 304 is provided with a positioning hole matched with the insert rod 305, after the monitor body 309 is mounted, the movable plate 302 compresses the ejection spring 303, therefore, when the monitor body 309 is mounted, the ejection spring 303 resets to drive the movable plate 302 to eject the monitor body 309, so that the monitor body can be conveniently replaced, when the monitor is mounted, the monitor body 309 is firstly inserted, then the mounting ring 304 is sleeved, before the mounting ring 304 is inserted, the insert rod 305 needs to be pulled out outwards, when the positioning hole on the outer wall of the mounting ring 304 is aligned with the insert rod 305, the insert rod 305 is loosened, the insert rod 305 is inserted into the positioning hole under the driving of the reset spring 307 to fix the mounting ring 304, and when the monitor is mounted, the mounting ring 304 and the monitor body 309 can;

referring to fig. 4, balls are mounted at opposite ends of two groups of insertion rods 305 through rotating connectors, a chamfer matched with the insertion rods 305 is arranged at the rear end of the outer wall of the mounting ring 304 ring, so that the insertion rods 305 can be conveniently inserted, and in the insertion process of the mounting ring 304, the chamfer 308 pushes the insertion rods 305 outwards without being pulled out manually;

referring to fig. 1, U-shaped clamping plates 12 are respectively arranged at the tops of the outer walls of the left side and the right side of the main casing 7, the inclined strut 10 is located in the inner cavity of the U-shaped clamping plates 12, and the main function of the U-shaped clamping plates 12 is to assist in reinforcing the inclined strut 10, so that the inclined strut 10 is stably lifted;

referring to fig. 1, the outer wall of the bottom of the base 1 is provided with a moisture-proof and corrosion-resistant layer 101, so that the corrosion of the base 1 by moist soil is weakened, and the service life of the base 1 is prolonged;

a foundation pit engineering monitoring device and method for high-rise buildings comprises the following steps:

s1: firstly, inserting the monitor body 309 into the mounting shell 301, then inserting the mounting ring 304, fixing the monitor body 309 into the mounting shell 301 by the mounting ring 304, and then screwing the mounting shell 301 into the left end of the lifting plate 28 according to the use condition, wherein the mounting angle is determined according to the use condition;

s2: winding a steel cable of hoisting equipment on a U-shaped clamping plate 12, then placing a base 1 in a foundation pit through the hoisting equipment, then turning over a support rod 2 to enable an adjusting screw rod 5 to be inserted into the inner wall of the bottom of the foundation pit, fixing the base 1, and selecting a bidirectional screw rod 14 according to the depth of the foundation pit at the moment to enable the maximum rising height of a monitor body 309 and the top of the annular inner wall of the foundation pit to be on the same horizontal plane;

s3: after the installation of S1, S2 is accomplished, motor 26 can drive lead screw 27 rotatory for lifter plate 28 slides from top to bottom under the restriction of slider 29, changes the terrain clearance of monitor body 309, and motor 18 drives gear 19, outer ring gear 16 and roating seat 15 rotation, drives monitor body 309 along with rotatory, increases the home range of monitor body 309, measures multiunit data and carries out the analysis, can improve the precision that detects.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a foundation ditch engineering monitoring devices for high-rise building, includes base (1), its characterized in that: the soil breaking device is characterized in that supporting rods (2) are mounted on four corners of the outer wall of the top of the base (1) through hinged parts, a connecting pipe (3) is fixedly mounted at the other end of each supporting rod (2), cushion blocks (4) are fixedly mounted at the bottom of each connecting pipe (3), adjusting lead screws (5) are sleeved in threaded sleeves in the inner cavities of the connecting pipes (3), soil breaking cones are fixedly mounted at the bottoms of the adjusting lead screws (5) and extend to the outer wall of the bottom of each cushion block (4), movable grooves are formed in the left side and the right side of the inner wall of the bottom of the base (1), movable blocks (6) are slidably arranged in the movable grooves, the tops of the movable blocks (6) extend to the outer wall of the top of the base (1), grooves matched with the movable blocks (6) are formed in the outer wall of the top of the base (1), a pipe clamp (9) is sleeved at the top of the joint of the circumferential outer wall of the lifting rod (8) and the main sleeve (7), the outer walls of the left side and the right side of the pipe clamp (9) are hinged with inclined stay bars (10), the bottoms of the inclined stay bars (10) are hinged with the top of the movable block (6), the inner wall of the left side of the base (1) is provided with a bidirectional screw rod (14) through a bearing, the right end of the bidirectional screw rod (14) extends to the outer wall of the right side of the base (1) and is provided with a handle, the outer wall of the right side of the base (1) is connected with a bidirectional screw rod (14) through a bearing, the movable block (6) is sleeved on the bidirectional screw rod (14) in a threaded manner, the top of the lifting rod (8) is fixedly provided with a rotary monitoring assembly (13), the top of the front end surface of the main sleeve (7) is movably inserted with a positioning pin (11), the front end face of the lifting rod (8) is provided with a positioning hole matched with the positioning pin (11).

2. A foundation pit engineering monitoring device for high-rise buildings according to claim 1, wherein: rotation type monitoring subassembly (13) include mount pad (20) of fixed mounting at lifter (8) top, mount pad (20) top outer wall center is equipped with the movable groove, and roating seat (15) are installed through the bearing to movable groove hoop inner wall, roating seat (15) top outer wall is equipped with over-and-under type monitoring subassembly (21), roating seat (15) hoop outer wall fixed cover is equipped with outer ring gear (16), mount pad (20) left side outer wall bottom welding has mounting panel (17), mounting panel (17) top is equipped with motor (18), gear (19) are installed to motor (18) top power end, gear (19) and the relative one side meshing of outer ring gear (16).

3. A foundation pit engineering monitoring device for high-rise buildings according to claim 2, wherein: over-and-under type monitoring subassembly (21) include two sets of installing frame (22) of controlling at roating seat (15) top, installing frame (22) left side outer wall four corners all is equipped with the screw hole, and the thread bush is equipped with the fixed screw in the screw hole, and is two sets of installing frame (22) bottom inner wall is equipped with drive mounting panel (23), drive mounting panel (23) top outer wall four corners all is equipped with the screw hole, and the thread bush is equipped with fixing bolt (24) in the screw hole, installing frame (22) and roating seat (15) all are equipped with and fix bolt (24) matched with screw (25), motor (26) are installed at drive mounting panel (23) top, lead screw (27) are installed to motor (26) top power end, lead screw (27) outer wall thread bush is equipped with lifter plate (28), both sides outer wall all is equipped with slider (29) around lifter plate (28), and is two sets of the junction of both sides all is equipped with fluting And the left end and the right end of the lifting plate (28) are respectively provided with a monitoring component (30) and a balancing weight (31).

4. A foundation pit engineering monitoring device for high-rise buildings according to claim 3, wherein: the monitoring assembly (30) comprises an installation shell (301) which is sleeved at the left end of the lifting plate (28) in a threaded manner, sliding grooves are formed in the rear sides of the top and the bottom inner walls of the installation shell (301), movable plates (302) are arranged in the two groups of sliding grooves in a sliding manner, ejection springs (303) are uniformly arranged on the outer walls of the rear sides of the movable plates (302), the rear ends of the ejection springs (303) are connected with the inner wall of the rear side of the installation shell (301), an installation ring (304) is movably inserted into the front end of the circumferential inner wall of the installation shell (301), monitor bodies (309) are arranged on the inner sides of the movable plates (302) and the installation ring (304), monitoring heads of the front end faces of the monitor bodies (309) penetrate through the inner cavity of the installation ring (304) and extend to the front end face of the installation ring (304), insertion rods (305) are movably inserted into the front end faces of the top and the bottom outer wall of, both sides all are equipped with reset spring (307) around arm-tie (306) and inserted bar (305) junction, reset spring (307) other end and installation shell (301) outer wall fixed connection, installation ring (304) outer wall is equipped with the locating hole with inserted bar (305) matched with.

5. A foundation pit engineering monitoring device for high-rise buildings according to claim 4, wherein: two sets of the relative one end of inserted bar (305) all installs the ball through rotating the connecting piece, collar (304) ring is equipped with the chamfer with inserted bar (305) matched with to the outer wall rear end.

6. A foundation pit engineering monitoring device for high-rise buildings according to claim 1, wherein: the top of the outer wall of the left side and the outer wall of the right side of the main sleeve (7) are respectively provided with a U-shaped clamping plate (12), and the inclined supporting rod (10) is located in the inner cavity of the U-shaped clamping plate (12).

7. A foundation pit engineering monitoring device for high-rise buildings according to claim 1, wherein: the outer wall of the bottom of the base (1) is provided with a moisture-proof anticorrosive layer (101).

8. A foundation pit engineering monitoring device and method for high-rise buildings according to any one of claims 1-7, characterized in that: the method comprises the following steps:

s1: firstly, inserting a monitor body (309) into an installation shell (301), then inserting an installation ring (304), fixing the monitor body (309) in the installation shell (301) by the installation ring (304), then screwing the installation shell (301) into the left end of a lifting plate (28) according to the use condition, wherein the installation angle is determined according to the use condition;

s2: winding a steel cable of hoisting equipment on a U-shaped clamping plate (12), then placing a base (1) in a foundation pit through the hoisting equipment, turning over a support rod (2) to enable an adjusting screw rod (5) to be inserted into the inner wall of the bottom of the foundation pit, fixing the base (1), and selecting a bidirectional screw rod (14) according to the depth of the foundation pit at the moment to enable the maximum height of the monitor body (309) to rise to be in the same level with the top of the annular inner wall of the foundation pit;

s3: after the installation of S1, S2, motor (26) can drive lead screw (27) rotatory for lifter plate (28) slides from top to bottom under the restriction of slider (29), change the terrain clearance of monitor body (309), motor (18) drive gear (19), outer ring gear (16) and roating seat (15) are rotatory, drive monitor body (309) along with rotatory, increase the home range of monitor body (309), measure multiunit data and carry out the analysis, can improve the precision that detects.