CN115681714B - Foundation pit enclosure displacement monitoring device - Google Patents
Foundation pit enclosure displacement monitoring device Download PDFInfo
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- CN115681714B CN115681714B CN202211388912.1A CN202211388912A CN115681714B CN 115681714 B CN115681714 B CN 115681714B CN 202211388912 A CN202211388912 A CN 202211388912A CN 115681714 B CN115681714 B CN 115681714B
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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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention relates to the field of measurement and monitoring, in particular to a foundation pit support displacement monitoring device. The device comprises an induction mechanism, an unlocking mechanism and a plurality of baffles, wherein all the baffles are hinged in sequence and are positioned on the same plane to form a coaming module, and the coaming module is placed inside a foundation pit along a foundation pit enclosure; the induction mechanism is arranged on the baffle plate and is configured to detect and judge the position with the largest deformation of the foundation pit according to the collapse trend of the foundation pit; the unlocking mechanism is located above the baffles, the unlocking mechanism is configured to select a plurality of baffles closest to the position with the largest deformation amount of the foundation pit according to the detection result of the sensing mechanism, and the baffle located in the middle of the selected baffles is aligned with the position with the largest deformation amount of the foundation pit. When the foundation pit is collapsed, the baffle plate selected by the unlocking mechanism forms a trapezoidal safety space with an opening facing the center of the foundation pit, and the safety is high.
Description
Technical Field
The invention relates to the field of measurement and monitoring, in particular to a foundation pit support displacement monitoring device.
Background
The foundation pit is a soil pit excavated at a foundation design position according to the elevation of the substrate and the plane size of the foundation, constructors work in the foundation pit, and if the collapse of the foundation pit cannot be timely judged, the foundation pit can bring great potential safety hazards, so that the change of the foundation pit enclosure needs to be monitored in real time by adopting a monitoring device to judge the change trend of the foundation pit enclosure, and further the collapse position of the foundation pit is accurately judged. In the related art, a detection rod is generally closely attached to the side wall of the foundation pit, and distance measurement is performed according to the length change of the detection rod, so that the collapse position of the foundation pit is judged. For example, chinese patent document with an authorized bulletin number CN 113668621B discloses a real-time mapping device based on foundation pit deformation monitoring, in which a monitoring rod is disposed on a riser, the monitoring rod is abutted against a side wall of a foundation pit, and a supporting mechanism mounted on the riser is enabled to act according to distance data measured by the monitoring rod, so that a corresponding supporting net extends to the side wall of the foundation pit to support the foundation pit. According to the scheme, although the collapse position of the foundation pit can be judged according to the detection result, the foundation pit is supported by the support net of the mapping device when the foundation pit collapses, namely the mapping device mainly supports the collapse of the foundation pit, the supporting force is weak, and the safety is poor.
Disclosure of Invention
According to the defects of the prior art, the invention provides a foundation pit enclosure displacement monitoring device, so as to solve the problem of poor safety of the existing monitoring device.
The invention relates to a foundation pit enclosure displacement monitoring device which adopts the following technical scheme: the device comprises an induction mechanism, an unlocking mechanism and a plurality of baffles, wherein all the baffles are hinged in sequence and are positioned on the same plane so as to form a coaming module, when all the baffles are positioned on the same plane, two adjacent baffles are positioned in a locking state under the action of a locking structure so as to be incapable of rotating relatively, and the coaming module is placed inside a foundation pit along a foundation pit enclosure;
the induction mechanism is arranged on the baffle plate and is configured to detect and judge the position with the largest deformation of the foundation pit according to the collapse trend of the foundation pit;
the unlocking mechanism is arranged above the baffles, the unlocking mechanism is configured to select a plurality of baffles closest to the position with the largest deformation amount of the foundation pit according to the detection result of the sensing mechanism, the number of the selected baffles is a base number greater than or equal to three, the baffles positioned in the middle among the selected baffles are aligned with the position with the largest deformation amount of the foundation pit, and the baffles are named as centering plates; simultaneously, the unlocking mechanism enables the baffle plates on two sides of the selected baffle plates to be separated from the adjacent baffle plates, and the unlocking mechanism is matched with the displacement of foundation pit maintenance to unlock the locking structure between the middle plate and the adjacent baffle plates, so that the middle plate and the adjacent baffle plates can rotate relatively, and the middle plate can be fixed on the ground of the foundation pit after being unlocked; after the foundation pit is completely collapsed, under the impact of earthwork of the foundation pit, the baffle plates on two sides of the centering plate rotate towards the direction close to the centering plate, and then the selected baffle plates form a trapezoidal safety space which takes the centering plate as a center and has an opening towards the center of the foundation pit, and the opening size of the safety space is determined by the unlocking mechanism.
Optionally, the induction mechanism includes induction rod and infrared ranging sensor, and the slip cartridge is in the baffle along the thickness direction of baffle to the induction rod, all is provided with the induction rod on every baffle, is provided with a plurality of induction rods and this a plurality of induction rods along vertical direction even interval on the same baffle, and the one end of initial induction rod is hugged closely with the foundation ditch enclosure, and infrared ranging sensor installs in the baffle and with the induction rod one-to-one, and infrared ranging sensor is used for detecting the distance between the one end that the induction rod is close to the foundation ditch enclosure and the baffle.
Optionally, a first hinge seat is arranged on one end face in the width direction of the baffle, a second hinge seat is arranged on the other end face of the baffle, and a plurality of first hinge seats and second hinge seats are arranged and uniformly spaced along the height direction of the baffle; when the two baffles are connected, the first hinging seat of one baffle and the second hinging seat of the other baffle are spliced, the first hinging seat and the second hinging seat which are vertically adjacent are hinged through one hinging column, and all the hinging columns can slide up and down;
the baffle is provided with a mounting seat, the mounting seat is positioned at the lower end of the first hinging seat at the lowest part, a first elastic piece is arranged in the mounting seat, and the upper end of the first elastic piece is contacted with the hinging column at the lowest end; the first elastic piece initially drives the hinge post at the lowest end to move upwards so that all the hinge posts are inserted into the adjacent first hinge post and second hinge post, and the adjacent two baffles are connected in a hinge mode; when the uppermost hinge post moves downwards by a preset distance, the first elastic piece is compressed, and the corresponding hinge post is correspondingly arranged in the first hinge seat or the second hinge seat, so that the two adjacent baffles can be separated.
Optionally, the locking structure comprises a locking gear and a fixed block;
the locking gear is positioned between two adjacent first hinging seats or between two adjacent second hinging seats, and the locking gear is sleeved on the corresponding hinging column in a sliding way;
the two fixing blocks are arranged and replace a first hinging seat or a second hinging seat together, the two fixing blocks are correspondingly arranged, the two fixing blocks are respectively and slidably inserted into two adjacent baffles, the fixing blocks are connected with the corresponding baffles through tension springs, and the tension springs promote the fixing blocks to move towards the inside of the baffles so as to further hinder the two fixing blocks from contacting;
the baffle is internally provided with two vertically extending trigger rods which are respectively positioned at two ends of the width direction of the baffle, the initial trigger rods block the fixed blocks from moving towards the inside of the baffle, and one ends of the two fixed blocks, which are close to each other, are clung to form an inner gear ring and encircle the locking gear so as to prevent the two connected baffles from rotating relatively; when the foundation pit collapses, the trigger lever releases the stop of fixed block and fixed with the bottom surface of foundation pit under release mechanism and induction rod's effect, and the fixed block removes to the inside of corresponding baffle under the effect of extension spring, and two fixed blocks all break away from with locking gear, and then adjacent two baffles can rotate.
Optionally, a mounting hole penetrating up and down is formed in the baffle, a preformed hole corresponding to the mounting hole is formed in the ground of the foundation pit, the trigger rod is inserted into the mounting hole, and the trigger rod can slide up and down and can move along the thickness direction of the baffle;
a push rod is arranged on one surface of the baffle, which is far away from the foundation pit enclosure, and is in sliding connection with two trigger rods on the same baffle in the vertical direction, and the push rod can drive the trigger rods to move along the thickness direction of the baffle; the induction rod is an elastic telescopic rod, penetrates through the baffle plate and can push the push rod to move in a direction away from the foundation pit enclosure;
the upper end of the trigger rod is provided with an avoidance notch, a first limiting boss and a second limiting boss are arranged in the baffle, the first limiting boss is positioned at the top end of the baffle, the second limiting boss is positioned at the bottom end of the baffle, and a second elastic piece is arranged on the second limiting boss; the initial trigger rod is positioned above the second limiting boss and extends out of the top end of the baffle under the support of the second elastic piece, the first limiting boss is positioned below the avoidance notch of the trigger rod and is in contact with the trigger rod so as to prevent the trigger rod from moving along the thickness direction of the baffle, and meanwhile, the trigger rod is aligned with the fixed block so as to block the fixed block; when the trigger rod moves downwards by a preset distance, the first limiting boss is aligned with the avoidance notch on the trigger rod so as to release the blocking of the trigger rod, when the foundation pit collapses, the foundation pit earthwork pushes the sensing rod to move, the sensing rod pushes the push rod to move, the push rod pulls the trigger rod to move in a direction away from the foundation pit enclosure, the trigger rod is separated from the second limiting boss and rapidly falls down, and the trigger rod passes through the mounting hole and finally falls into the reserved hole on the ground of the foundation pit when falling down.
Optionally, the unlocking mechanism comprises a selecting rod, a first unlocking slide block and a second unlocking slide block, the selecting rod is of an elastic telescopic structure, the initial rod length of the selecting rod corresponds to the total length of the baffle to be selected, and the selecting rod is located above the baffle; the two second unlocking slide blocks are respectively positioned at two ends of the selection rod, the second unlocking slide blocks are arranged at the top end of the baffle in a sliding manner along the width direction of the baffle, an unlocking column is inserted between the second unlocking slide blocks and the selection rod, the unlocking column and the selection rod synchronously rotate, the unlocking column and the second unlocking slide blocks relatively rotate, and a driving device is arranged on the second unlocking slide blocks and is used for driving the second unlocking slide blocks to move along the baffle;
the first unlocking slide block is arranged at the top end of the baffle plate in a sliding manner along the width direction of the baffle plate, the initial first unlocking slide block is in sliding connection with the selection rod along the thickness direction of the baffle plate, the first unlocking slide block is positioned in the middle of the selection rod, and the first unlocking slide block is separated from the selection rod in a sliding manner when the baffle plate changes the shape; according to the signal of induction mechanism, second unblock slider drives and selects pole and first unblock slider to follow the baffle and remove, and moves to first unblock slider and be in the baffle top that the biggest induction rod of displacement corresponds and stop, and first unblock slider and second unblock slider remove in-process, will hinge post and trigger lever when being in hinge post and trigger lever top and push down.
Optionally, an extrusion column is inserted into the first hinge seat or the second hinge seat at the uppermost end, the extrusion column is located above the hinge column at the uppermost end, and guide inclined planes are arranged on two side surfaces of the top end of the extrusion column corresponding to the moving direction of the second unlocking slide block, so that the second unlocking slide block can downwards extrude the extrusion column, and the extrusion column downwards moves to drive all the hinge columns to downwards move; the top of the trigger rod is provided with a guide inclined plane corresponding to the moving direction of the first unlocking slide block, so that the second unlocking slide block can downwards extrude the extrusion column.
Optionally, drive arrangement includes movable motor and drive gear, and movable motor and drive gear set up in the inside of second unblock slider, and movable motor is used for driving drive gear and rotates, and the top of baffle is provided with the recess, and the both sides wall of recess is provided with the rack, and drive gear and rack engagement, and then drive second unblock slider and remove along the baffle.
Optionally, the unlocking post rotates and can slide relatively from top to bottom with selecting the pole synchronization, unlocking post and second unblock slider screwed connection, the inside spring pin that is provided with of second unblock slider, the baffle top is provided with the locking hole, when all baffles are in coplanar and second unblock slider remove along the baffle, the spring pin can cross the locking hole, when selecting the baffle that the pole selected to warp, second unblock slider rotates relatively with selecting the pole, and then unlocking post rotates relatively with second unblock slider, unlocking post and second unblock slider screw drive and then move the preset distance downwards, after the unlocking post moves downwards with the spring pin indentation locking hole, second unblock slider and corresponding baffle locking.
Optionally, an indication board is arranged in the middle of the selection rod, and extends towards the direction close to the middle of the foundation pit.
The beneficial effects of the invention are as follows: according to the foundation pit enclosure displacement monitoring device, the plurality of baffles are arranged, the initial baffles are hinged and connected and are positioned on the same plane, after the sensing mechanism detects the position with the largest deformation of the foundation pit through the cooperation of the sensing mechanism and the unlocking mechanism, the unlocking mechanism selects a plurality of baffles which are closest to the position (the foundation pit is easiest to collapse and the collapse degree is the most serious after collapse in the position), and the baffles are in a state capable of being transformed; after the foundation pit collapses, the baffle plate selected by the unlocking mechanism forms a trapezoidal safety space which takes the centering plate as a center and has an opening facing the center of the foundation pit, temporary refuge places can be provided for constructors after the safety space is formed, meanwhile, because the foundation pit enclosure displacement monitoring device disclosed by the invention is used for directly supporting the foundation pit, the baffle plates on two sides of the centering plate rotate under the impact of earthwork, the baffle plates can guide the earthwork after rotating and play a certain supporting role in centering the baffle plates, and the safety is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, it being understood that these drawings are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the whole structure of a foundation pit enclosure displacement monitoring device according to the present invention;
FIG. 2 is a front view of a single baffle and its upper components in accordance with the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
FIG. 5 is a partially cut-away perspective view of FIG. 2;
FIG. 6 is a schematic diagram of an unlocking mechanism according to the present invention;
FIG. 7 is a cross-sectional view of FIG. 6;
fig. 8 is a schematic diagram illustrating a state that an unlocking mechanism and a corresponding number of single boards enclose a safety space in the present invention.
In the figure: 100. an induction mechanism; 110. a push rod; 120. an induction rod; 121. an induction plate; 140. an infrared ranging sensor; 200. an unlocking mechanism; 210. selecting a rod; 230. an indication board; 240. a first unlocking slide block; 250. a second unlocking slide block; 260. unlocking the column; 270. a spring pin; 280. a moving motor; 290. a drive gear; 300. a baffle; 311. the first limiting boss; 312. the second limiting boss; 313. a rack; 314. a locking hole; 315. a first hinge base; 316. the second hinge seat; 320. a universal wheel; 330. an extrusion column; 340. a hinge post; 350. a fixed block; 360. a trigger lever; 370. a locking gear; 380. a tension spring; 390. a first elastic member.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 8, a foundation pit enclosure displacement monitoring device of the present invention includes an induction mechanism 100, an unlocking mechanism 200, and a plurality of baffles 300.
All baffles 300 are initially positioned on the same plane to form a coaming module, the coaming module is placed inside a foundation pit along a foundation pit enclosure, the foundation pit enclosure refers to a cement mortar surface or other protection surfaces arranged on the side wall of the foundation pit when the excavation of the foundation pit is completed, and the foundation pit enclosure has certain curing and protecting effects on the form of the foundation pit. When all the baffles 300 are positioned on the same plane, two adjacent baffles 300 are hinged and connected, and are in a locking state under the action of the locking structure, so that the baffles cannot rotate relatively.
The sensing mechanism 100 is disposed on the baffle 300, and the sensing mechanism 100 is configured to detect and determine a position of the foundation pit with the largest deformation according to the collapse trend of the foundation pit.
The unlocking mechanism 200 is configured to select a plurality of baffles 300 closest to a position with the largest deformation amount of the foundation pit (the position with the largest collapse easiness, the first collapse and the largest collapse degree of the foundation pit) according to the detection result of the sensing mechanism 100, wherein the number of the selected baffles 300 is a base number greater than or equal to three, the baffle 300 positioned in the middle of the selected baffles 300 is aligned with the position with the largest deformation amount of the foundation pit, and the baffle 300 is named as a centering plate; meanwhile, the baffle plates 300 on two sides of the selected baffle plates 300 are separated from the adjacent baffle plates 300, and the unlocking mechanism 200 is matched with the displacement of foundation pit maintenance to unlock the locking structure between the centering plate and the adjacent baffle plates 300, so that the centering plate and the adjacent baffle plates 300 can relatively rotate, and the centering plate can be fixed on the ground of the foundation pit after being unlocked; after the foundation pit is completely collapsed, under the impact of the earthwork of the foundation pit, the baffle plates 300 on two sides of the centering plate rotate towards the direction close to the centering plate, and then the selected baffle plates 300 form a trapezoidal safety space which takes the centering plate as the center and has an opening towards the center of the foundation pit, and the opening size of the safety space is determined by the unlocking mechanism 200. The temporary refuge place can be provided for constructors after the safety space is formed, meanwhile, because the foundation pit enclosure displacement monitoring device provided by the invention does not directly support the foundation pit, the baffle plates 300 on two sides of the centering plate rotate under the impact of earthwork, the baffle plates 300 can guide the earthwork after rotating and play a certain supporting role in centering the baffle plates, and the safety is higher.
In a further embodiment, as shown in fig. 4, the sensing mechanism 100 includes sensing rods 120 and infrared ranging sensors 140, the sensing rods 120 are slidably inserted into the baffles 300 along the thickness direction of the baffles 300, each baffle 300 is provided with a sensing rod 120, one end of the initial sensing rod 120 is tightly attached to the foundation pit enclosure, the infrared ranging sensors 140 are mounted on the baffles 300 and are in one-to-one correspondence with the sensing rods 120, and the infrared ranging sensors 140 are used for detecting the distance between one end of the sensing rod 120 close to the foundation pit enclosure and the baffle 300.
Further, for the convenience of detection, one end of the sensing rod 120 is provided with a sensing plate 121, the initial sensing plate 121 is tightly attached to the foundation pit enclosure, and the infrared ranging sensor 140 measures the distance between the end surface of the sensing plate 121, which is close to the baffle 300, and the baffle 300. To improve the accuracy of the detection, a plurality of sensing bars 120 are provided on the same baffle 300 and the plurality of sensing bars 120 are uniformly spaced in the vertical direction.
The foundation pit enclosure can appear slight displacement (namely the foundation pit appears collapsing precursor) before collapsing, and the foundation pit enclosure promotes the sensor pole 120 and removes this moment, and infrared ranging sensor 140 detects the distance between baffle 300 and the sensor pole 120 and shortens, then gives the control room with the signal transmission, sends out the alarm, and the control room is according to signal control release mechanism 200 action, and release mechanism 200 makes corresponding baffle 300 be in the state that can change the form when the foundation pit collapses.
In a further embodiment, as shown in fig. 2 and 5, a first hinge seat 315 is disposed on one end surface of the baffle 300 in the width direction, a second hinge seat 316 is disposed on the other end surface of the baffle 300, a plurality of first hinge seats 315 and second hinge seats 316 are disposed on the other end surface of the baffle, the first hinge seats 315 and the second hinge seats 316 are uniformly spaced along the height direction of the baffle 300, when the two baffle 300 are connected, the first hinge seat 315 of one baffle 300 and the second hinge seat 316 of the other baffle 300 are inserted, the first hinge seat 315 and the second hinge seat 316 which are vertically adjacent are hinged through one hinge post 340, and all the hinge posts 340 can slide up and down.
The baffle 300 is provided with a mounting seat, the mounting seat is positioned at the lower end of the first hinging seat 315 at the lowest part, a first elastic piece 390 is arranged in the mounting seat, and the upper end of the first elastic piece 390 is contacted with the hinging column 340 at the lowest part; the initial first elastic member 390 urges the lowermost hinge post 340 to move upward so that all the hinge posts 340 are inserted into the adjacent first hinge post 340 and second hinge post 340, thereby hingedly connecting the adjacent two shutters 300; when the uppermost hinge post 340 moves downward by a predetermined distance, the uppermost hinge post 340 drives all the hinge posts 340 to move downward, the first elastic member 390 is compressed, and the corresponding hinge post 340 is correspondingly disposed inside the first hinge seat 315 or inside the second hinge seat 316, so that the two adjacent baffles 300 can be separated. The preferred first elastic member 390 of the present invention is a spring.
In a further embodiment, as shown in fig. 2, 3 and 5, the locking structure includes a locking gear 370 and a fixed block 350; the locking gear 370 is disposed between two adjacent first hinge seats 315 or between two adjacent second hinge seats 316, and the locking gear 370 is slidably sleeved on the corresponding hinge post 340.
The two fixing blocks 350 are arranged, the two fixing blocks 350 replace one first hinging seat 315 or replace one second hinging seat 316 together, the two fixing blocks 350 are correspondingly arranged, the two fixing blocks 350 are respectively and slidably inserted into the two adjacent baffle plates 300, the fixing blocks 350 are connected with the corresponding baffle plates 300 through tension springs 380, and the tension springs 380 enable the fixing blocks 350 to move towards the inside of the baffle plates 300 so as to prevent the two fixing blocks 350 from contacting.
The baffle 300 is internally provided with two vertically extending trigger rods 360, the trigger rods 360 are respectively positioned at two ends of the width direction of the baffle 300, the initial fixed block 350 is blocked by the trigger rods 360 and cannot move towards the inside of the baffle 300, one ends, close to each other, of the two fixed blocks 350 are tightly attached to form an inner gear ring and encircle the locking gear 370, so that the two connected baffles 300 are prevented from relatively rotating; when the foundation pit collapses, the trigger rod 360 releases the blocking of the fixed block 350 under the action of the unlocking mechanism 200 and the induction rod 120 and is fixed with the bottom surface of the foundation pit, the fixed block 350 moves towards the inside of the corresponding baffle 300 under the action of the tension spring 380, the two fixed blocks 350 are separated from the locking gear 370, and then the two adjacent baffles 300 can rotate.
Further, as shown in fig. 3, 4 and 5, the baffle 300 is provided with a mounting hole penetrating up and down, the foundation pit ground is provided with a preformed hole corresponding to the mounting hole, the trigger lever 360 is inserted into the mounting hole, and the trigger lever 360 can slide up and down and can move along the thickness direction of the baffle 300.
The baffle 300 is provided with a push rod 110 on one surface far away from the foundation pit enclosure, the push rod 110 is in sliding connection with two trigger rods 360 on the same baffle 300 in the vertical direction, and the push rod 110 can drive the trigger rods 360 to move along the thickness direction of the baffle 300; the sensing rod 120 is an elastic telescopic rod, and the sensing rod 120 passes through the baffle 300 and can push the push rod 110 to move towards a direction away from the foundation pit enclosure.
The upper end side of the trigger rod 360 is provided with an avoidance notch, a first limit boss 311 and a second limit boss 312 are arranged in the baffle 300, the first limit boss 311 is positioned at the top end of the baffle 300, the second limit boss 312 is positioned at the bottom end of the baffle 300, and a second elastic piece is arranged on the second limit boss 312; the initial trigger rod 360 is located above the second limit boss 312 and extends out of the top end of the baffle 300 under the support of the second elastic piece, the first limit boss 311 is located below the avoidance notch of the trigger rod 360 and contacts with the trigger rod 360 to further obstruct the trigger rod 360 from moving along the thickness direction of the baffle 300, and meanwhile the trigger rod 360 is aligned with the fixed block 350 to further block the fixed block 350; when the trigger rod 360 moves downwards for a preset distance, the first limiting boss 311 is aligned with the avoidance notch on the trigger rod 360 to release the blocking of the trigger rod 360, when the foundation pit collapses, the foundation pit earthwork pushes the sensing rod 120 to move, the sensing rod 120 pushes the push rod 110 to move, the push rod 110 pulls the trigger rod 360 to move in a direction away from the foundation pit enclosure, the trigger rod 360 is separated from the second limiting boss 312 and falls rapidly, and the trigger rod 360 passes through the mounting hole and finally falls into the reserved hole on the ground of the foundation pit when falling. The preferred second resilient member of the present invention is a spring.
As another possible embodiment, the trigger lever 360 is an elastic telescopic lever, the bottom end of the initial trigger lever 360 directly abuts against the second limiting boss 312 (no second elastic member is provided in this embodiment), and the upper end of the trigger lever 360 moves downward to shrink when being pressed down, so that the avoidance notch on the trigger lever is aligned with the first limiting boss 311.
In the invention, preferably, a preset distance is reserved between the initial sensing rod 120 and the push rod 110 (i.e. the initial sensing rod 120 is not contacted with the push rod 110), the sensing rod 120 approaches the push rod 110 when the foundation pit is supported for displacement, and a worker at the position with the largest deformation amount of the foundation pit can observe the displacement amount of the sensing rod 120, so that the collapse time and collapse degree of the foundation pit can be predicted, and the safety measures can be conveniently taken in time.
In a further embodiment, the unlocking mechanism 200 includes a selection rod 210, a first unlocking slide block 240 and a second unlocking slide block 250, the selection rod 210 is of an elastic telescopic structure, the initial rod length of the selection rod 210 corresponds to the total length of the baffle 300 to be selected for participating in form conversion, and the selection rod 210 is located above the baffle 300; the second unlocking slide blocks 250 are two and are respectively positioned at two ends of the selection rod 210, the second unlocking slide blocks 250 are slidably arranged at the top end of the baffle 300 along the width direction of the baffle 300, an unlocking column 260 is inserted between the second unlocking slide blocks 250 and the selection rod 210, the unlocking column 260 and the selection rod 210 synchronously rotate, the unlocking column 260 and the second unlocking slide blocks 250 relatively rotate, and a driving device is arranged on the second unlocking slide blocks 250 and is used for driving the second unlocking slide blocks 250 to move along the baffle 300.
The first unlocking slide block 240 is slidably arranged at the top end of the baffle 300 along the width direction of the baffle 300, the initial first unlocking slide block 240 is slidably connected with the selection rod 210 along the thickness direction of the baffle 300, the first unlocking slide block 240 is positioned in the middle of the selection rod 210, and the first unlocking slide block 240 is slidably separated from the selection rod 210 when the baffle 300 changes the shape; according to the signal of the sensing mechanism 100, the second unlocking slide block 250 drives the selection rod 210 and the first unlocking slide block 240 to move along the baffle 300, and the first unlocking slide block 240 stops above the baffle 300 corresponding to the sensing rod 120 with the largest displacement, and the hinge post 340 and the trigger rod 360 are pressed downwards when the first unlocking slide block 240 and the second unlocking slide block 250 move above the hinge post 340 and the trigger rod 360.
Further, the extrusion column 330 is inserted into the uppermost first hinge seat 315 or the second hinge seat 316, the extrusion column 330 is located above the uppermost hinge column 340, and guiding inclined planes are disposed on two sides of the top end of the extrusion column 330 corresponding to the moving direction of the second unlocking slide 250, so that the second unlocking slide 250 extrudes the extrusion column 330 downwards, and the extrusion column 330 moves downwards to drive all the hinge columns 340 to move downwards. The top end of the trigger lever 360 is provided with a guide slope corresponding to the moving direction of the first unlocking slide 240 so that the second unlocking slide 250 presses the pressing column 330 downward.
In a further embodiment, as shown in fig. 5 and 7, the driving device includes a moving motor 280 and a driving gear 290, the moving motor 280 and the driving gear 290 are disposed inside the second unlocking slide 250, the moving motor 280 is used for driving the driving gear 290 to rotate, the top of the baffle 300 is provided with a groove, two side walls of the groove are provided with racks 313, the driving gear 290 is meshed with the racks 313, and then the second unlocking slide 250 is driven to move along the baffle 300.
In a further embodiment, as shown in fig. 7, the unlocking post 260 rotates synchronously with the selection rod 210 and can slide up and down relatively, the unlocking post 260 is in spiral connection with the second unlocking slide block 250, a spring pin 270 is arranged inside the second unlocking slide block 250, a locking hole 314 is formed at the top end of the baffle 300, when all the baffles 300 are on the same plane and the second unlocking slide block 250 moves along the baffle 300, the spring pin 270 can pass through the locking hole 314, when the baffle 300 selected by the selection rod 210 deforms, the second unlocking slide block 250 rotates relatively with the selection rod 210, the unlocking post 260 rotates relatively with the second unlocking slide block 250, the unlocking post 260 is in spiral transmission with the second unlocking slide block 250 to move downwards for a preset distance, the spring pin 270 is pressed into the locking hole 314 after the unlocking post 260 moves downwards, and the second unlocking slide block 250 is locked with the corresponding baffle 300.
In a further embodiment, the middle part of the selection rod 210 is provided with an indication plate 230, and the indication plate 230 extends in a direction approaching the middle part of the foundation pit. Through setting up the pilot board 230, before the foundation ditch completely collapses, constructor can judge the position that the foundation ditch collapses according to the position of pilot board 230, and then can shift to the safe space in advance.
Further, the unlocking mechanisms 200 corresponding to the same coaming module are provided with a plurality of groups, the unlocking mechanisms 200 are uniformly spaced, and the total number of the baffles 300 selected by all the unlocking mechanisms 200 is smaller than the total number of the baffles 300 forming the coaming module. Through setting up multiunit unblock structure, when the foundation ditch collapses, if the scope of sweep is great, perhaps appear that many places collapse, a coaming module can form a plurality of safe spaces, and the constructor of being convenient for in time dodges, further improves the security. It should be noted that, one enclosing surface of the foundation pit is preferably provided with a coaming module, and coaming modules of two adjacent enclosing surfaces are not independently arranged (i.e. are not connected), however, in actual use, a plurality of coaming modules can be arranged on the same enclosing surface of the foundation pit according to construction requirements.
In a further embodiment, the lower bottom surface of the barrier 300 is provided with universal wheels 320 to facilitate movement of the barrier 300.
The initial length of the selection rod 210 of the preferred invention corresponds to five baffles 300, the limit position of the selection rod 210 capable of shrinking determines the opening size of a safety space formed by the five baffles 300 after form conversion, the number of the baffles 300 used can be determined according to the length of a single side of a foundation pit, and the number of the unlocking mechanisms 200 used can be determined according to the number of the baffles 300 and the actual use condition.
In specific use, the device is placed beside a foundation pit enclosure, the sensing plate 121 is tightly attached to the foundation pit enclosure, and then the infrared ranging sensor 140 monitors the distance between the baffle 300 and the sensing plate 121. Slight displacement occurs to the foundation pit support before the foundation pit collapses, the foundation pit support moves to push the induction rod 120 to move, at the moment, the infrared ranging sensor 140 monitors that the distance between the baffle 300 and the induction plate 121 is shortened, an alarm is sent out, a signal is transmitted to the control room, the control room sends out a control signal to enable the unlocking mechanism 200 to start moving at the top end of the baffle 300, and the unlocking mechanism 200 stops moving when moving to the top end of the baffle 300 where the induction rod 120 with the largest middle position is located (as shown in fig. 1); at this time, the first unlocking slide 240 is located at the top end of the baffle 300 where the sensing rod 120 with the largest displacement is located and presses the corresponding trigger rod 360 into the baffle 300, and at the same time, the second unlocking slide 250 is located at the hinge position of two baffles 300 apart from the middle position (that is, the baffles 300 on two sides of the five baffles 300 selected by the unlocking mechanism 200) and presses the corresponding pressing column 330 downward. After the trigger rod 360 is pressed into the baffle 300, a gap is formed between the upper end of the trigger rod and the first limiting boss 311 in the baffle 300, so that the trigger rod can slide in the baffle 300 in a direction approaching to the push rod 110; simultaneously, the extrusion column 330 moves downwards to drive all the hinge rods to move downwards integrally, so that the hinge rods are not connected with the adjacent first hinge seat 315 and second hinge seat 316 any more, but are independently inserted into the first hinge seat 315 or the second hinge seat 316, that is, the two baffles 300 connected with each other can be separated.
When the foundation pit enclosure breaks down, the foundation pit enclosure further pushes the induction rod 120 to move towards the push rod 110, the induction rod 120 pushes the push rod 110 to move, the push rod 110 drives the trigger rod 360 to move towards a direction away from the foundation pit enclosure, the bottom end of the trigger rod 360 is not limited by the second limiting boss 312, the trigger rod 360 is not supported and then falls down rapidly, and the trigger rod 360 passes through a fixing hole reserved in advance at the bottom of the baffle 300 and enters a reserved hole on the ground of the foundation pit when falling down, so that the baffle 300 is fixed, and the baffle 300 is not pushed down by the earthwork of the foundation pit. Meanwhile, after the trigger rod 360 moves in the direction away from the foundation pit enclosure, the trigger rod 360 releases the limit of the fixed block 350, the fixed block 350 moves in the direction close to the corresponding baffle 300 under the pulling of the tension spring 380 and is further disengaged from the locking gear 370, at this time, the baffle 300 positioned in the middle of the unlocking mechanism 200 and the baffle 300 adjacent to the baffle 300 can rotate relatively, and further the two side baffles 300 of the baffle 300 positioned in the middle start to rotate towards the push rod 110 under the action of the earthwork of the foundation pit, and finally the five baffles 300 selected by the unlocking mechanism 200 form a trapezoidal safety space taking the collapsed center of the foundation pit as a central line, and the selection rod 210 is contracted to the opening of the limit support safety space, so that constructors can avoid conveniently.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. The utility model provides a foundation ditch support displacement monitoring devices which characterized in that: the device comprises an induction mechanism, an unlocking mechanism and a plurality of baffles, wherein all the baffles are hinged in sequence and are positioned on the same plane so as to form a coaming module, when all the baffles are positioned on the same plane, two adjacent baffles are positioned in a locking state under the action of a locking structure so as to be incapable of rotating relatively, and the coaming module is placed inside a foundation pit along a foundation pit enclosure;
the induction mechanism is arranged on the baffle plate and is configured to detect and judge the position with the largest deformation of the foundation pit according to the collapse trend of the foundation pit;
the unlocking mechanism is arranged above the baffles, the unlocking mechanism is configured to select a plurality of baffles closest to the position with the largest deformation amount of the foundation pit according to the detection result of the sensing mechanism, the number of the selected baffles is a base number greater than or equal to three, the baffles positioned in the middle among the selected baffles are aligned with the position with the largest deformation amount of the foundation pit, and the baffles are named as centering plates; simultaneously, the unlocking mechanism enables the baffle plates on two sides of the selected baffle plates to be separated from the adjacent baffle plates, and the unlocking mechanism is matched with the displacement of foundation pit maintenance to unlock the locking structure between the middle plate and the adjacent baffle plates, so that the middle plate and the adjacent baffle plates can rotate relatively, and the middle plate can be fixed on the ground of the foundation pit after being unlocked; after the foundation pit is completely collapsed, under the impact of the earthwork of the foundation pit, the baffle plates on two sides of the centering plate rotate towards the direction close to the centering plate, and then the selected baffle plates form a trapezoid safety space which takes the centering plate as the center and has an opening towards the center of the foundation pit, and the opening size of the safety space is determined by the unlocking mechanism;
the sensing mechanism comprises sensing rods and infrared ranging sensors, the sensing rods are slidably inserted into the baffles along the thickness direction of the baffles, each baffle is provided with a plurality of sensing rods, the same baffle is provided with a plurality of sensing rods which are uniformly spaced along the vertical direction, one end of each initial sensing rod is tightly attached to a foundation pit enclosure, the infrared ranging sensors are arranged on the baffles and are in one-to-one correspondence with the sensing rods, and the infrared ranging sensors are used for detecting the distance between one end of each sensing rod, which is close to the foundation pit enclosure, and the baffle;
one end face of the baffle in the width direction is provided with a first hinging seat, the other end face of the baffle is provided with a second hinging seat, and the first hinging seat and the second hinging seat are respectively provided with a plurality of baffle plates and are uniformly spaced along the height direction of the baffle plates; when the two baffles are connected, the first hinging seat of one baffle and the second hinging seat of the other baffle are spliced, the first hinging seat and the second hinging seat which are vertically adjacent are hinged through one hinging column, and all the hinging columns can slide up and down;
the baffle is provided with a mounting seat, the mounting seat is positioned at the lower end of the first hinging seat at the lowest part, a first elastic piece is arranged in the mounting seat, and the upper end of the first elastic piece is contacted with the hinging column at the lowest end; the first elastic piece initially drives the hinge post at the lowest end to move upwards so that all the hinge posts are inserted into the adjacent first hinge post and second hinge post, and the adjacent two baffles are connected in a hinge mode; when the uppermost hinge post moves downwards for a preset distance, the first elastic piece is compressed, and the corresponding hinge post is correspondingly arranged in the first hinge seat or the second hinge seat so that two adjacent baffles can be separated;
the locking structure comprises a locking gear and a fixed block;
the locking gear is positioned between two adjacent first hinging seats or between two adjacent second hinging seats, and the locking gear is sleeved on the corresponding hinging column in a sliding way;
the two fixing blocks are arranged and replace a first hinging seat or a second hinging seat together, the two fixing blocks are correspondingly arranged, the two fixing blocks are respectively and slidably inserted into two adjacent baffles, the fixing blocks are connected with the corresponding baffles through tension springs, and the tension springs promote the fixing blocks to move towards the inside of the baffles so as to further hinder the two fixing blocks from contacting;
the baffle is internally provided with two vertically extending trigger rods which are respectively positioned at two ends of the width direction of the baffle, the initial trigger rods block the fixed blocks from moving towards the inside of the baffle, and one ends of the two fixed blocks, which are close to each other, are clung to form an inner gear ring and encircle the locking gear so as to prevent the two connected baffles from rotating relatively; when the foundation pit collapses, the trigger rod releases the blocking of the fixed blocks under the action of the unlocking mechanism and the induction rod and is fixed with the bottom surface of the foundation pit, the fixed blocks move towards the inside of the corresponding baffle plates under the action of the tension springs, the two fixed blocks are separated from the locking gear, and then the two adjacent baffle plates can rotate;
the inside of the baffle is provided with a mounting hole which is penetrated up and down, the ground of the foundation pit is provided with a preformed hole corresponding to the mounting hole, the trigger rod is inserted into the mounting hole, and the trigger rod can slide up and down and can move along the thickness direction of the baffle;
a push rod is arranged on one surface of the baffle, which is far away from the foundation pit enclosure, and is in sliding connection with two trigger rods on the same baffle in the vertical direction, and the push rod can drive the trigger rods to move along the thickness direction of the baffle; the induction rod is an elastic telescopic rod, penetrates through the baffle plate and can push the push rod to move in a direction away from the foundation pit enclosure;
the upper end of the trigger rod is provided with an avoidance notch, a first limiting boss and a second limiting boss are arranged in the baffle, the first limiting boss is positioned at the top end of the baffle, the second limiting boss is positioned at the bottom end of the baffle, and a second elastic piece is arranged on the second limiting boss; the initial trigger rod is positioned above the second limiting boss and extends out of the top end of the baffle under the support of the second elastic piece, the first limiting boss is positioned below the avoidance notch of the trigger rod and is in contact with the trigger rod so as to prevent the trigger rod from moving along the thickness direction of the baffle, and meanwhile, the trigger rod is aligned with the fixed block so as to block the fixed block; when the trigger rod moves downwards for a preset distance, the first limiting boss is aligned with the avoidance notch on the trigger rod so as to release the blocking of the trigger rod, when the foundation pit collapses, the sensing rod is pushed by the earthwork of the foundation pit to move, the push rod is pushed by the sensing rod to move, the trigger rod is pulled by the push rod to move in a direction away from the foundation pit enclosure, the trigger rod is separated from the second limiting boss and rapidly falls down, and when the trigger rod falls down, the trigger rod passes through the mounting hole and finally falls into the reserved hole on the ground of the foundation pit;
the unlocking mechanism comprises a selecting rod, a first unlocking sliding block and a second unlocking sliding block, the selecting rod is of an elastic telescopic structure, the initial rod length of the selecting rod corresponds to the total length of a baffle to be selected, and the selecting rod is positioned above the baffle; the two second unlocking slide blocks are respectively positioned at two ends of the selection rod, the second unlocking slide blocks are arranged at the top end of the baffle in a sliding manner along the width direction of the baffle, an unlocking column is inserted between the second unlocking slide blocks and the selection rod, the unlocking column and the selection rod synchronously rotate, the unlocking column and the second unlocking slide blocks relatively rotate, and a driving device is arranged on the second unlocking slide blocks and is used for driving the second unlocking slide blocks to move along the baffle;
the first unlocking slide block is arranged at the top end of the baffle plate in a sliding manner along the width direction of the baffle plate, the initial first unlocking slide block is in sliding connection with the selection rod along the thickness direction of the baffle plate, the first unlocking slide block is positioned in the middle of the selection rod, and the first unlocking slide block is separated from the selection rod in a sliding manner when the baffle plate changes the shape; according to the signal of the induction mechanism, the second unlocking slide block drives the selection rod and the first unlocking slide block to move along the baffle plate, and the first unlocking slide block stops above the baffle plate corresponding to the induction rod with the largest displacement, and the hinge column and the trigger rod are pressed downwards when being positioned above the hinge column and the trigger rod in the moving process of the first unlocking slide block and the second unlocking slide block;
the extrusion column is inserted into the first hinging seat or the second hinging seat at the uppermost end and is positioned above the hinging column at the uppermost end, and guide inclined planes are arranged on two side surfaces of the top end of the extrusion column corresponding to the moving direction of the second unlocking slide block, so that the second unlocking slide block can downwards extrude the extrusion column, and the extrusion column downwards moves to drive all the hinging columns to downwards move; the top of the trigger rod is provided with a guide inclined plane corresponding to the moving direction of the first unlocking slide block, so that the second unlocking slide block can downwards extrude the extrusion column.
2. The foundation pit bracing displacement monitoring device of claim 1, wherein: the driving device comprises a moving motor and a driving gear, the moving motor and the driving gear are arranged in the second unlocking slide block, the moving motor is used for driving the driving gear to rotate, a groove is formed in the top of the baffle, racks are arranged on two side walls of the groove, the driving gear is meshed with the racks, and then the second unlocking slide block is driven to move along the baffle.
3. The foundation pit bracing displacement monitoring device of claim 1, wherein: the unlocking post rotates synchronously with the selecting rod and can slide up and down relatively, the unlocking post is in spiral connection with the second unlocking slide block, the spring pin is arranged inside the second unlocking slide block, the top end of each baffle is provided with a locking hole, all baffles are positioned on the same plane, when the second unlocking slide block moves along the baffles, the spring pin can cross the locking holes, when the baffles selected by the selecting rod deform, the second unlocking slide block rotates relatively with the selecting rod, the unlocking post rotates relatively with the second unlocking slide block, the unlocking post and the second unlocking slide block are in spiral transmission and then move downwards for a preset distance, the unlocking post moves downwards and then presses the spring pin into the locking holes, and the second unlocking slide block is locked with the corresponding baffles.
4. The foundation pit bracing displacement monitoring device of claim 1, wherein: the middle part of selecting the pole is provided with the instruction board, and the instruction board extends to the direction that is close to the foundation ditch middle part.
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| CN116518911B (en) * | 2023-07-03 | 2023-08-29 | 北京城建勘测设计研究院有限责任公司天津分公司 | Foundation pit support structure deformation monitoring device |
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