CN115681714A - Foundation pit support displacement monitoring device - Google Patents
Foundation pit support displacement monitoring device Download PDFInfo
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- CN115681714A CN115681714A CN202211388912.1A CN202211388912A CN115681714A CN 115681714 A CN115681714 A CN 115681714A CN 202211388912 A CN202211388912 A CN 202211388912A CN 115681714 A CN115681714 A CN 115681714A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to the field of measurement and monitoring, in particular to a foundation pit enclosure displacement monitoring device. The system comprises an induction mechanism, an unlocking mechanism and a plurality of baffles, wherein initially all the baffles are sequentially hinged and positioned on the same plane to form a coaming module, and the coaming module is placed in a foundation pit along the enclosure of the foundation pit; the sensing mechanism is arranged on the baffle and is configured to detect and judge the position with the maximum deformation of the foundation pit according to the collapse trend of the foundation pit; the unlocking mechanism is arranged above the baffles, the multiple baffles closest to the position with the largest foundation pit deformation are selected according to the detection result of the sensing mechanism, and the baffle in the middle of the selected baffles is aligned with the position with the largest foundation pit deformation. When the foundation pit collapses, the baffle 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 enclosure displacement monitoring device.
Background
The foundation pit is a soil pit excavated at a designed position of the foundation according to the base elevation and the base plane size, a constructor works in the foundation pit, if the collapse of the foundation pit cannot be judged in time, great potential safety hazards can be brought, and therefore a monitoring device needs to be adopted to monitor the change of the foundation pit enclosure in real time so as to judge the change trend of the foundation pit enclosure and further accurately judge the collapse position of the foundation pit. In the related art, usually, the detection rod is adopted to be tightly attached to the side wall of the foundation pit, and the distance is measured 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 No. CN 113668621B discloses a real-time mapping device based on foundation pit deformation monitoring, in which a monitoring rod is disposed on a vertical plate, the monitoring rod is abutted against the side wall of the foundation pit, and a supporting mechanism mounted on the vertical plate is operated according to distance data measured by the monitoring rod, so that a corresponding supporting net extends out of the side wall of the foundation pit to support the foundation pit. Although this scheme can make the judgement to the position of collapsing of foundation ditch according to the testing result, but support the foundation ditch by surveying and mapping device's own supporting net when the foundation ditch collapses, also be exactly the collapse of main support foundation ditch of surveying and mapping device, the holding power is relatively weak, and the security is poor.
Disclosure of Invention
According to the defects of the prior art, the invention provides a foundation pit enclosure displacement monitoring device, which aims to solve the problem that the existing monitoring device is poor in safety.
The invention discloses 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 initially all the baffles are sequentially hinged and positioned on the same plane to form a coaming module, when all the baffles are positioned on the same plane, two adjacent baffles are in a locking state under the action of a locking structure and cannot relatively rotate, and the coaming module is placed in a foundation pit along the enclosure of the foundation pit;
the sensing mechanism is arranged on the baffle and is configured to detect and judge the position with the maximum 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 which are closest to the position with the largest foundation pit deformation according to the detection result of the sensing mechanism, the number of the selected baffles is a base number which is more than or equal to three, the baffles in the middle of the selected baffles are aligned with the position with the largest foundation pit deformation, and the baffles are named as centering plates; meanwhile, the unlocking mechanism enables the baffles on two sides of the selected baffle to be separated from the adjacent baffle, and the unlocking mechanism is matched with the displacement of foundation pit maintenance to unlock the locking structure between the centering plate and the adjacent baffle, so that the centering plate and the adjacent baffle can rotate relatively, and the centering plate can be fixed on the ground of the foundation pit after being unlocked; after the foundation pit completely collapses, under the impact of foundation pit earthwork, the baffle of centering plate both sides rotates to the direction that is close to the centering plate, and then the baffle of selecting forms and uses centering plate as central, opening towards the foundation pit center, be trapezoidal safe space, and the opening size in safe space is decided by release mechanism.
Optionally, the induction mechanism comprises an induction rod and infrared distance measuring sensors, the induction rods are inserted into the baffles in a sliding mode along the thickness direction of the baffles, the induction rods are arranged on each baffle, a plurality of induction rods are arranged on the same baffle and are evenly spaced along the vertical direction, one end of each initial induction rod is attached to the foundation pit enclosure, the infrared distance measuring sensors are mounted on the baffles and correspond to the induction rods one to one, and the infrared distance measuring sensors are used for detecting the distance between one end, close to the foundation pit enclosure, of each induction rod and the corresponding baffles.
Optionally, one end face of the baffle in the width direction is provided with a first hinge seat, the other end face of the baffle is provided with a second hinge seat, and the first hinge seat and the second hinge seat are provided with a plurality of hinge seats which are uniformly spaced along the height direction of the baffle; when in connection, the first hinge seat of one baffle plate in two adjacent baffle plates is spliced with the second hinge seat of the other baffle plate, the first hinge seat and the second hinge seat which are adjacent up and down are hinged through a hinge column, and all the hinge 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 hinge 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 hinge column at the lowest part; the first elastic piece is used for promoting the hinge post at the lowermost end to move upwards initially, so that all the hinge posts are inserted into the adjacent first hinge post and the second hinge post, and the adjacent two baffles are hinged; when the hinge column at the uppermost end moves downwards for a preset distance, the first elastic piece is compressed, and the corresponding hinge column is correspondingly arranged inside the first hinge seat or the second hinge seat, so that 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 is sleeved on the corresponding hinging column in a sliding manner;
the two fixing blocks replace a first hinge seat or a second hinge seat together, the two fixing blocks are arranged correspondingly, the two fixing blocks are inserted into the two adjacent baffles in a sliding mode respectively, the fixing blocks are connected with the corresponding baffles through tension springs, and the tension springs enable the fixing blocks to move towards the interiors of the baffles so as to prevent the two fixing blocks from contacting;
the baffle is internally provided with a vertically extending trigger rod, the two trigger rods are respectively positioned at two ends of the width direction of the baffle, the initial trigger rod stops 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 tightly attached 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 ditch collapses, the trigger lever removes stopping of fixed block and fixed with the bottom surface of foundation ditch under the effect of release mechanism and response pole, and the fixed block moves to the inside of corresponding baffle under the effect of extension spring, and two fixed blocks all break away from with the locking gear, and then two adjacent baffles can rotate.
Optionally, a vertically through mounting hole 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 in the thickness direction of the baffle;
a push rod is arranged on one surface of the baffle far away from the foundation pit enclosure, the push rod is connected with the two trigger rods on the same baffle in a sliding mode in the vertical direction, and the push rod can drive the trigger rods to move in the thickness direction of the baffle; the induction rod is an elastic telescopic rod, penetrates through the baffle and can push the push rod to move in the direction far away from the foundation pit enclosure;
an avoidance notch is formed in one side of the upper end of the trigger rod, a first limiting boss and a second limiting boss are arranged inside the baffle, the first limiting boss is located at the top end of the baffle, the second limiting boss is located 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 block the trigger rod from moving in the thickness direction of the baffle, and meanwhile, the trigger rod is aligned with the fixed block so as to block the fixed block; after the trigger rod moves downwards for a preset distance, the first limiting boss is aligned with the avoidance notch in the trigger rod and then the blocking of the trigger rod is removed, when a foundation pit collapses, the earth of the foundation pit pushes the induction rod to move, the induction rod pushes the push rod to move, the push rod pulls the trigger rod to move towards the direction far away from the enclosure of the foundation pit, the trigger rod is separated from the second limiting boss and rapidly falls, and the trigger rod penetrates through the mounting hole when falling and finally falls into the reserved hole in the ground of the foundation pit.
Optionally, the unlocking mechanism comprises a selection rod, a first unlocking slide block and a second unlocking slide block, the selection rod is of an elastic telescopic structure, the initial rod length of the selection rod corresponds to the total length of the baffle to be selected, and the selection rod is located above the baffle; the second unlocking slide blocks are arranged at two ends of the selecting rod respectively, the second unlocking slide blocks are arranged at the top end of the baffle in a sliding mode along the width direction of the baffle, an unlocking column is inserted between the second unlocking slide blocks and the selecting rod, the unlocking column and the selecting rod rotate synchronously, the unlocking column and the second unlocking slide blocks rotate relatively, and a driving device is arranged on the second unlocking slide blocks and 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 in a sliding mode along the width direction of the baffle, the first unlocking slide block is initially connected with the selecting rod in a sliding mode along the thickness direction of the baffle and is located in the middle of the selecting rod, and the first unlocking slide block is separated from the selecting rod in a sliding mode when the baffle is changed in shape; according to the signal of the induction mechanism, the second unlocking slide block drives the selecting rod and the first unlocking slide block to move along the baffle, the second unlocking slide block moves to the position above the baffle corresponding to the induction rod with the largest displacement amount, and the first unlocking slide block and the second unlocking slide block move in the process of moving and downwards press the hinged column and the trigger rod when being positioned above the hinged column and the trigger rod.
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 two side surfaces of the top end of the extrusion column, which correspond to the moving direction of the second unlocking slider, are provided with guide inclined surfaces, so that the second unlocking slider extrudes the extrusion column downwards, and the downward movement of the extrusion column drives all the hinge columns to move downwards; the top end 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 extrude the extrusion column downwards.
Optionally, the driving device includes a moving motor and a driving gear, the moving motor and the driving gear are arranged inside the second unlocking slider, 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 slider is driven to move along the baffle.
Optionally, the unlocking column and the selecting rod rotate synchronously and can slide up and down relatively, the unlocking column is in spiral connection with the second unlocking sliding block, a spring pin is arranged inside the second unlocking sliding block, the top end of the baffle is provided with a locking hole, when all the baffles are located on the same plane and the second unlocking sliding block moves along the baffles, the spring pin can cross the locking hole, when the baffle selected by the selecting rod deforms, the second unlocking sliding block rotates relative to the selecting rod, the unlocking column and the second unlocking sliding block rotate relative to each other, the unlocking column and the second unlocking sliding block are in spiral transmission and then move downwards for a preset distance, the spring pin is pressed into the locking hole after the unlocking column moves downwards, and the second unlocking sliding block is locked with the corresponding baffle.
Optionally, an indicator plate is arranged in the middle of the selection rod, and the indicator plate extends towards the direction close to the middle of the foundation pit.
The invention has the beneficial effects that: the foundation pit enclosure displacement monitoring device is provided with the baffles, the initial baffles are hinged and connected and are positioned on the same plane, through the cooperation of the induction mechanism and the unlocking mechanism, after the induction mechanism detects the position with the maximum foundation pit deformation, the unlocking mechanism selects the baffles closest to the position (the position is most prone to collapse of the foundation pit and the collapse degree is most serious after collapse), and the baffles are in a state capable of changing forms; after the foundation pit collapses, the baffle selected by the unlocking mechanism forms a trapezoidal safety space with the centering plate as the center and an opening facing the center of the foundation pit, and the safety space can provide a temporary shelter for constructors.
Drawings
In order to illustrate embodiments of the invention or prior art solutions more clearly, the drawings that are needed in the description of embodiments or prior art will be briefly described below, it being apparent that the drawings in the description below are only some embodiments of the invention and that other drawings may be derived by those skilled in the art without inventive effort, and it will be understood that the drawings are not necessarily drawn to scale.
Fig. 1 is a schematic view of the overall structure of a foundation pit enclosure displacement monitoring device according to the present invention;
FIG. 2 is a front view of a single baffle plate and its upper parts of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a partially cut-away perspective view of FIG. 2;
FIG. 6 is a schematic view of the unlocking mechanism of the present invention;
FIG. 7 is a cross-sectional view of FIG. 6;
fig. 8 is a schematic diagram of a state in which the unlocking mechanism and a corresponding number of single plates 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 distance measuring sensor; 200. an unlocking mechanism; 210. selecting a rod; 230. an indicator panel; 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 plate; 311. a first limit boss; 312. a second limit boss; 313. a rack; 314. a locking hole; 315. a first hinge mount; 316. a second hinged seat; 320. a universal wheel; 330. extruding the column; 340. a hinged column; 350. a fixed block; 360. a trigger lever; 370. a locking gear; 380. a tension spring; 390. a first elastic member.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 to 8, the device for monitoring displacement of a foundation pit support of the present invention includes a sensing mechanism 100, an unlocking mechanism 200, and a plurality of baffles 300.
All the baffles 300 are initially positioned on the same plane to form a coaming module, the coaming module is placed inside a foundation pit along foundation pit enclosure, the foundation pit enclosure refers to a cement mortar surface or other protective surfaces arranged on the side wall of the foundation pit when the foundation pit is excavated, and the foundation pit enclosure plays a certain role in curing and protecting the form of the foundation pit. When all the baffle plates 300 are positioned on the same plane, two adjacent baffle plates 300 are hinged and positioned in a locking state under the action of a locking structure, so that the two baffle plates cannot rotate relatively.
The sensing mechanism 100 is arranged on the baffle 300, and the sensing mechanism 100 is configured to detect and judge the position with the largest foundation pit deformation amount according to the collapse trend of the foundation pit.
The unlocking mechanism 200 is configured to select a plurality of baffles 300 which are closest to the position with the largest foundation pit deformation (the foundation pit is most easy to collapse, collapses firstly and has the largest collapse degree) according to the detection result of the sensing mechanism 100, the number of the selected baffles 300 is a base number which is more than or equal to three, and the baffle 300 which is positioned in the middle of the selected baffles 300 is aligned with the position with the largest foundation pit deformation, so that the baffle 300 is named as a centering plate; meanwhile, the baffles 300 on two sides of the selected baffle 300 are separated from the adjacent baffles 300, 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 baffles 300, so that the centering plate and the adjacent baffles 300 can rotate relatively, and the centering plate can be fixed on the ground of the foundation pit after being unlocked; after the foundation pit completely collapses, under the impact of the foundation pit earthwork, the baffle plates 300 on the two sides of the centering plate rotate towards the direction close to the centering plate, then the selected baffle plates 300 form a trapezoidal safety space which takes the centering plate as the center and has an opening facing the center of the foundation pit, and the opening size of the safety space is determined by the unlocking mechanism 200. Meanwhile, because the foundation pit enclosure displacement monitoring device provided by the invention does not directly support the foundation pit, the baffles 300 on two sides of the centering plate are rotated under the impact of the earthwork, the baffles 300 can guide the earthwork after the rotation and play a certain supporting role on the centering baffles, and the safety is higher.
In a further embodiment, as shown in fig. 4, the sensing mechanism 100 includes a sensing rod 120 and an infrared distance measuring sensor 140, the sensing rod 120 is slidably inserted into the baffle 300 along the thickness direction of the baffle 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 distance measuring sensors 140 are installed on the baffles 300 and are in one-to-one correspondence with the sensing rods 120, and the infrared distance measuring sensor 140 is 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 distance measuring sensor 140 measures the distance between the end face of the sensing plate 121 close to the baffle 300 and the baffle 300. In order to improve the accuracy of detection, a plurality of sensing rods 120 are arranged on the same baffle 300, and the sensing rods 120 are uniformly spaced along the vertical direction.
The foundation pit enclosure can slightly displace before the foundation pit collapses (namely the foundation pit collapses to form a precursor), the foundation pit enclosure pushes the induction rod 120 to move at the moment, the infrared distance measuring sensor 140 monitors that the distance between the baffle 300 and the induction rod 120 is shortened, then a signal is transmitted to the control room, an alarm is given out, the control room controls the unlocking mechanism 200 to act according to the signal, and the unlocking mechanism 200 enables the corresponding baffle 300 to be in a state that the shape can be changed when the foundation pit collapses.
In a further embodiment, as shown in fig. 2 and 5, a first hinged seat 315 is disposed on one end surface of the baffle 300 in the width direction, a second hinged seat 316 is disposed on the other end surface of the baffle 300, the first hinged seat 315 and the second hinged seat 316 are both provided with a plurality of parts and are uniformly spaced along the height direction of the baffle 300, the first hinged seat 315 of one baffle 300 and the second hinged seat 316 of the other baffle 300 in two adjacent baffles 300 are inserted during connection, the first hinged seat 315 and the second hinged seat 316 which are adjacent up and down are hinged through a hinged column 340, and all the hinged columns 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 hinge seat 315 at the lowest part, a first elastic part 390 is arranged in the mounting seat, and the upper end of the first elastic part 390 is contacted with the hinge 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, and the adjacent two baffles 300 are hinged; when the uppermost hinge post 340 moves downwards by a predetermined distance, the uppermost hinge post 340 drives all the hinge posts 340 to move downwards, the first elastic member 390 is compressed, and the corresponding hinge post 340 is correspondingly disposed inside the first hinge base 315 or inside the second hinge base 316, so that the two adjacent baffles 300 can be separated. The first elastic member 390 is preferably a spring according to the present invention.
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 column 340.
The two fixing blocks 350 are arranged, the two fixing blocks 350 jointly replace one first hinge seat 315 or one second hinge seat 316, the two fixing blocks 350 are correspondingly arranged, the two fixing blocks 350 are respectively inserted into the two adjacent baffles 300 in a sliding mode, the fixing blocks 350 and the corresponding baffles 300 are connected through tension springs 380, and the tension springs 380 enable the fixing blocks 350 to move towards the insides of the baffles 300 and further prevent the two fixing blocks 350 from contacting.
A vertically extending trigger rod 360 is arranged in the baffle 300, the trigger rod 360 is provided with two ends which are respectively positioned at the two ends of the baffle 300 in the width direction, the initial fixing block 350 cannot move towards the inside of the baffle 300 under the blocking of the trigger rod 360, and the ends, close to each other, of the two fixing blocks 350 are tightly attached to form an inner gear ring and encircle the locking gear 370 so as to block the two connected baffles 300 from rotating relatively; when the foundation pit collapses, the trigger rod 360 releases the blocking of the fixing blocks 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 fixing blocks 350 move towards the inside of the corresponding baffle 300 under the action of the tension spring 380, the two fixing 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, a vertically through mounting hole is formed in the baffle 300, a preformed hole corresponding to the mounting hole is formed in the ground of the foundation pit, the trigger rod 360 is inserted into the mounting hole, and the trigger rod 360 can slide vertically and can move in the thickness direction of the baffle 300.
A push rod 110 is arranged on one surface of the baffle 300, which is 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 in the thickness direction of the baffle 300; the sensing rod 120 is an elastic telescopic rod, and the sensing rod 120 penetrates through the baffle 300 and can push the push rod 110 to move towards a direction far away from the foundation pit enclosure.
An avoidance notch is formed in one side of the upper end of the trigger rod 360, a first limiting boss 311 and a second limiting boss 312 are arranged inside the baffle 300, the first limiting boss 311 is located at the top end of the baffle 300, the second limiting boss 312 is located at the bottom end of the baffle 300, and a second elastic piece is arranged on the second limiting boss 312; the initial trigger rod 360 is positioned above the second limiting boss 312 and extends out of the top end of the baffle 300 under the support of the second elastic part, the first limiting boss 311 is positioned below an avoidance notch of the trigger rod 360 and is in contact with the trigger rod 360 to further block 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; after the trigger rod 360 moves downwards for a preset distance, the first limit boss 311 is aligned with the avoidance notch on the trigger rod 360 to further remove the blocking of the trigger rod 360, when the foundation pit collapses, the foundation pit earthwork pushes the induction rod 120 to move, the induction rod 120 pushes the push rod 110 to move, the push rod 110 pulls the trigger rod 360 to move towards the direction far away from the foundation pit enclosure, the trigger rod 360 is separated from the second limit boss 312 and falls quickly, and the trigger rod 360 passes through the mounting hole when falling and finally falls into the reserved hole on the ground of the foundation pit. The preferred second resilient member of the present invention is a spring.
As another possible embodiment, the triggering rod 360 is an elastic telescopic rod, the bottom end of the initial triggering rod 360 directly abuts against the second limiting boss 312 (in this embodiment, a second elastic member is not provided), and the upper end moves downward and contracts when the triggering rod 360 is pressed down, so that the avoidance gap on the triggering rod is aligned with the first limiting boss 311.
Preferably, a preset distance is provided between the initial sensing rod 120 and the push rod 110 (that is, the initial sensing rod 120 is not in contact with the push rod 110), the sensing rod 120 approaches the push rod 110 during the displacement of the foundation pit enclosure, and a worker at the position with the largest deformation of the foundation pit can observe the displacement of the sensing rod 120, so that the collapse time and the collapse degree of the foundation pit can be pre-judged, and safety measures can be taken in time.
In a further embodiment, the unlocking mechanism 200 comprises a selection rod 210, a first unlocking slider 240 and a second unlocking slider 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 to participate in the form conversion, and the selection rod 210 is positioned above the baffle 300; the two second unlocking sliding blocks 250 are respectively located at two ends of the selecting rod 210, the second unlocking sliding blocks 250 are arranged at the top end of the baffle 300 in a sliding mode along the width direction of the baffle 300, the unlocking columns 260 are inserted between the second unlocking sliding blocks 250 and the selecting rod 210, the unlocking columns 260 and the selecting rod 210 rotate synchronously, the unlocking columns 260 and the second unlocking sliding blocks 250 rotate relatively, and the second unlocking sliding blocks 250 are provided with driving devices which are used for driving the second unlocking sliding blocks 250 to move along the baffle 300.
The first unlocking slider 240 is arranged at the top end of the baffle 300 in a sliding manner along the width direction of the baffle 300, the first unlocking slider 240 is initially connected with the selecting rod 210 in a sliding manner along the thickness direction of the baffle 300, the first unlocking slider 240 is positioned in the middle of the selecting rod 210, and the first unlocking slider 240 is separated from the selecting rod 210 in a sliding manner when the baffle 300 is in a shape changing manner; according to the signal of the sensing mechanism 100, the second unlocking slider 250 drives the selecting rod 210 and the first unlocking slider 240 to move along the baffle 300, and the selecting rod 210 and the first unlocking slider 240 move until the first unlocking slider 240 is located above the baffle 300 corresponding to the sensing rod 120 with the largest displacement amount, and the first unlocking slider 240 and the second unlocking slider 250 press the hinge column 340 and the trigger rod 360 downwards when located above the hinge column 340 and the trigger rod 360 in the moving process.
Furthermore, the extrusion column 330 is inserted into the first hinge seat 315 or the second hinge seat 316 at the uppermost end, the extrusion column 330 is located above the hinge column 340 at the uppermost end, and two side surfaces of the top end of the extrusion column 330 corresponding to the moving direction of the second unlocking slider 250 are provided with guide inclined surfaces, so that the second unlocking slider 250 extrudes the extrusion column 330 downwards, and the downward movement of the extrusion column 330 drives 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 slider 240 so that the second unlocking slider 250 presses the pressing pole 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 slider 250, the moving motor 280 is used for driving the driving gear 290 to rotate, a groove is disposed on the top of the barrier 300, two side walls of the groove are provided with racks 313, and the driving gear 290 is engaged with the racks 313 to drive the second unlocking slider 250 to move along the barrier 300.
In a further embodiment, as shown in fig. 7, the unlocking column 260 and the selecting rod 210 rotate synchronously and can slide up and down relatively, the unlocking column 260 is connected with the second unlocking slider 250 in a spiral manner, a spring pin 270 is arranged inside the second unlocking slider 250, a locking hole 314 is formed in the top end of the baffle 300, when all the baffles 300 are located on the same plane and the second unlocking slider 250 moves along the baffles 300, the spring pin 270 can pass through the locking hole 314, when the baffle 300 selected by the selecting rod 210 deforms, the second unlocking slider 250 rotates relatively to the selecting rod 210, the unlocking column 260 rotates relatively to the second unlocking slider 250, the unlocking column 260 and the second unlocking slider 250 perform spiral transmission to move downwards by a preset distance, the spring pin 270 is pressed into the locking hole 314 after the unlocking column 260 moves downwards, and the second unlocking slider 250 is locked with the corresponding baffle 300.
In a further embodiment, an indicator plate 230 is disposed at the middle of the pick lever 210, and the indicator plate 230 extends in a direction near the middle of the excavation. Through setting up indicator plate 230, before the foundation ditch completely collapses, constructor can judge the position that the foundation ditch collapses according to indicator plate 230's position, and then can shift to safe space in advance.
Furthermore, a plurality of groups of unlocking mechanisms 200 corresponding to the same coaming module are arranged, the unlocking mechanisms 200 are uniformly spaced, and the total number of the baffles 300 selected by all the unlocking mechanisms 200 is less than the total number of the baffles 300 forming the coaming module. Through setting up multiunit unlocking structure, when the foundation ditch collapses, if the range of fluctuation is great, perhaps appear many places and collapse, a bounding wall module can form a plurality of safety spaces, and the constructor of being convenient for in time avoids, further improves the security. It should be noted that, in the preferred foundation pit of the present invention, one enclosure surface is correspondingly provided with one enclosure plate module, and the enclosure plate modules of two adjacent enclosure surfaces are not separately provided (i.e. not connected), and of course, in actual use, a plurality of enclosure plate modules may be provided on the same enclosure surface of the foundation pit according to construction requirements.
In a further embodiment, the lower bottom surface of barrier 300 is provided with universal wheels 320 to facilitate movement of barrier 300.
The initial rod length of the selecting rod 210 corresponds to five baffles 300, the limit position where the selecting rod 210 can be contracted determines the opening size of a safety space formed after the five baffles 300 are changed in form, the number of the baffles 300 used can be determined according to the length of a single edge 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.
When the device is used specifically, the device is firstly placed beside a foundation pit enclosure, the induction plate 121 is attached to the foundation pit enclosure, and then the infrared distance measuring sensor 140 monitors the distance between the baffle 300 and the induction plate 121. The foundation pit enclosure slightly displaces before the foundation pit collapses, moves to push the induction rod 120 to move, the infrared distance measuring sensor 140 monitors that the distance between the baffle 300 and the induction plate 121 is shortened, gives an alarm, simultaneously transmits a signal to the control room, the control room sends 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 maximum displacement at the middle position is located (as shown in fig. 1); at this time, the first unlocking slider 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 slider 250 is located at the hinge position which is separated from the middle position by two baffles 300 (i.e. the baffles 300 on two sides of the five baffles 300 selected by the unlocking mechanism 200) and presses the corresponding pressing column 330 downwards. 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 the direction close to the push rod 110; meanwhile, the downward movement of the squeezing column 330 drives all the hinge rods to move downward integrally, so that the hinge rods are no longer connected with the adjacent first hinge seats 315 and the second hinge seats 316, but are independently inserted into the first hinge seats 315 or the second hinge seats 316, that is, the two connected shutters 300 can be separated.
When the foundation pit enclosure collapses, the foundation pit enclosure can further push the induction rod 120 to move towards the push rod 110, then the induction rod 120 pushes the push rod 110 to move, the push rod 110 drives the trigger rod 360 to move towards the direction far away from the foundation pit enclosure, further the bottom end of the trigger rod 360 is not limited by the second limiting boss 312, the trigger rod 360 is no longer supported and then falls rapidly, the trigger rod 360 passes through a fixing hole reserved in advance at the bottom of the baffle 300 when falling and enters into a reserved hole in the ground of the foundation pit, fixing of the baffle 300 is completed, and the baffle 300 is prevented from being pushed down by the earthwork of the foundation pit. Meanwhile, after the trigger rod 360 moves away from the foundation pit enclosure, the trigger rod 360 releases the limit of the fixing block 350, the fixing block 350 is pulled by the tension spring 380 to move towards the direction close to the corresponding baffle 300 and further is disengaged from the locking gear 370, at this time, the baffle 300 located in the middle of the unlocking mechanism 200 and the baffle 300 adjacent to the baffle 300 can rotate relatively, then the baffles 300 on the two sides of the baffle 300 in the middle start to rotate towards the push rod 110 under the effect of the earth of the foundation pit, finally, five baffles 300 selected by the unlocking mechanism 200 form a trapezoidal safety space with the center of the collapsed center of the foundation pit as the center line, the selection rod 210 is contracted to an opening of the limit support safety space, and convenience is brought to constructors to avoid.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a foundation ditch enclosure displacement monitoring devices which characterized in that: the foundation pit retaining device comprises an induction mechanism, an unlocking mechanism and a plurality of baffles, wherein initially all the baffles are sequentially hinged and positioned on the same plane to form a surrounding plate module, when all the baffles are positioned on the same plane, two adjacent baffles are in a locking state under the action of a locking structure and cannot rotate relatively, and the surrounding plate module is placed inside a foundation pit along the foundation pit;
the sensing mechanism is arranged on the baffle and is configured to detect and judge the position with the maximum 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 which are closest to the position with the largest foundation pit deformation according to the detection result of the sensing mechanism, the number of the selected baffles is a base number which is more than or equal to three, the baffles located in the middle of the selected baffles are aligned with the position with the largest foundation pit deformation, and the baffles are named as centering plates; meanwhile, the unlocking mechanism enables the baffles on two sides of the selected baffle to be separated from the adjacent baffle, and the unlocking mechanism is matched with the displacement of foundation pit maintenance to unlock the locking structure between the centering plate and the adjacent baffle, so that the centering plate and the adjacent baffle can rotate relatively, and the centering plate can be fixed on the ground of the foundation pit after being unlocked; after the foundation pit completely collapses, under the impact of foundation pit earthwork, the baffle of centering plate both sides rotates to the direction that is close to the centering plate, and then the baffle of choosing forms and uses centering plate as the center, opening towards the foundation pit center, be trapezoidal safety space, and the opening size in safety space is decided by release mechanism.
2. The foundation pit support displacement monitoring device of claim 1, characterized in that: the induction mechanism comprises an induction rod and infrared distance measuring sensors, the induction rods are slidably inserted in the baffle plate along the thickness direction of the baffle plate, the induction rods are arranged on each baffle plate, a plurality of induction rods are arranged on the same baffle plate, the induction rods are evenly spaced along the vertical direction, one end of each initial induction rod is tightly attached to the foundation pit enclosure, the infrared distance measuring sensors are installed on the baffle plate and correspond to the induction rods one to one, and the infrared distance measuring sensors are used for detecting the distance between one end, close to the foundation pit enclosure, of each induction rod and the baffle plate.
3. The foundation pit enclosure displacement monitoring device of claim 2, wherein: one end face of the baffle in the width direction is provided with a first hinge seat, the other end face of the baffle is provided with a second hinge seat, and the first hinge seat and the second hinge seat are both provided with a plurality of hinge seats which are uniformly spaced along the height direction of the baffle; when in connection, the first hinge seat of one baffle plate in two adjacent baffle plates is spliced with the second hinge seat of the other baffle plate, the first hinge seat and the second hinge seat which are adjacent up and down are hinged through a hinge column, and all the hinge 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 hinge 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 hinge column at the lowest part; the initial first elastic piece prompts the hinge column at the lowest end to move upwards, so that all the hinge columns are inserted into the adjacent first hinge column and the second hinge column, and the adjacent two baffles are hinged; when the hinge column at the uppermost end moves downwards for a preset distance, the first elastic piece is compressed, and the corresponding hinge column is correspondingly arranged inside the first hinge seat or the second hinge seat, so that two adjacent baffles can be separated.
4. The foundation pit enclosure displacement monitoring device of claim 3, wherein: the locking structure comprises a locking gear and a fixing block;
the locking gear is positioned between two adjacent first hinging seats or between two adjacent second hinging seats and is sleeved on the corresponding hinging column in a sliding manner;
the two fixing blocks replace a first hinge seat or a second hinge seat together, the two fixing blocks are arranged correspondingly, the two fixing blocks are inserted into the two adjacent baffles in a sliding mode respectively, the fixing blocks are connected with the corresponding baffles through tension springs, and the tension springs enable the fixing blocks to move towards the interiors of the baffles so as to prevent the two fixing blocks from contacting;
the baffle is internally provided with a vertically extending trigger rod, the two trigger rods are respectively positioned at two ends of the width direction of the baffle, the initial trigger rod stops 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 tightly attached 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 ditch collapses, the trigger lever removes stopping of fixed block and fixed with the bottom surface of foundation ditch under the effect of release mechanism and response pole, and the fixed block moves to the inside of corresponding baffle under the effect of extension spring, and two fixed blocks all break away from with the locking gear, and then two adjacent baffles can rotate.
5. A foundation pit bracing displacement monitoring device according to claim 4, characterized in that: the inner part of the baffle is provided with a vertically through mounting hole, the ground of the foundation pit is provided with a preformed hole corresponding to the mounting hole, the trigger rod is inserted in 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 far away from the foundation pit enclosure, the push rod is connected with the two trigger rods on the same baffle in a sliding mode in the vertical direction, and the push rod can drive the trigger rods to move in the thickness direction of the baffle; the induction rod is an elastic telescopic rod, penetrates through the baffle and can push the push rod to move in the direction far away from the foundation pit enclosure;
an avoidance notch is formed in one side of the upper end of the trigger rod, a first limiting boss and a second limiting boss are arranged inside the baffle, the first limiting boss is located at the top end of the baffle, the second limiting boss is located 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 block the trigger rod from moving in the thickness direction of the baffle, and meanwhile, the trigger rod is aligned with the fixed block so as to block the fixed block; after the trigger rod moves downwards for a preset distance, the first limiting boss is aligned with the avoidance notch in the trigger rod and then the blocking of the trigger rod is removed, when the foundation pit collapses, the earthwork of the foundation pit pushes the induction rod to move, the induction rod pushes the push rod to move, the push rod pulls the trigger rod to move towards the direction far away from the enclosure of the foundation pit, the trigger rod is separated from the second limiting boss and rapidly falls down, and the trigger rod penetrates through the mounting hole and finally falls into the reserved hole in the ground of the foundation pit when falling.
6. A foundation pit bracing displacement monitoring device according to claim 4, characterized in that: the unlocking mechanism comprises a selection rod, a first unlocking slide block and a second unlocking slide block, the selection rod is of an elastic telescopic structure, the initial rod length of the selection rod corresponds to the total length of the baffle to be selected, and the selection rod is positioned above the baffle; the second unlocking slide blocks are two and are respectively positioned at two ends of the selecting rod, the second unlocking slide blocks are arranged at the top ends of the baffles in a sliding mode along the width direction of the baffles, unlocking columns are inserted between the second unlocking slide blocks and the selecting rod, the unlocking columns and the selecting rod rotate synchronously, the unlocking columns and the second unlocking slide blocks rotate relatively, and driving devices are arranged on the second unlocking slide blocks and are used for driving the second unlocking slide blocks to move along the baffles;
the first unlocking slide block is arranged at the top end of the baffle in a sliding mode along the width direction of the baffle, the first unlocking slide block is initially connected with the selecting rod in a sliding mode along the thickness direction of the baffle and is located in the middle of the selecting rod, and the first unlocking slide block is separated from the selecting rod in a sliding mode when the baffle is changed in shape; according to the signal of the induction mechanism, the second unlocking slide block drives the selecting rod and the first unlocking slide block to move along the baffle, and the selecting rod and the first unlocking slide block move to the position above the baffle corresponding to the induction rod with the largest displacement and stop, and the hinged column and the trigger rod are pressed downwards when the first unlocking slide block and the second unlocking slide block are positioned above the hinged column and the trigger rod in the moving process.
7. The foundation pit support displacement monitoring device of claim 6, wherein: an extrusion column is inserted into the first hinge seat or the second hinge seat at the uppermost end, the extrusion column is positioned above the hinge column at the uppermost end, and two side faces, corresponding to the moving direction of the second unlocking sliding block, of the top end of the extrusion column are provided with guide inclined planes so that the second unlocking sliding block can extrude the extrusion column downwards, and the extrusion column moves downwards to drive all the hinge columns to move downwards; the top end 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 extrude the extrusion column downwards.
8. The foundation pit support displacement monitoring device of claim 6, wherein: the driving device comprises a moving motor and a driving gear, the moving motor and the driving gear are arranged inside the second unlocking sliding block, the moving motor is used for driving the driving gear to rotate, the top of the baffle is provided with a groove, two side walls of the groove are provided with racks, the driving gear is meshed with the racks, and then the second unlocking sliding block is driven to move along the baffle.
9. The foundation pit support displacement monitoring device of claim 6, wherein: the unlocking column and the selecting rod synchronously rotate and can relatively slide up and down, the unlocking column is in threaded connection with the second unlocking sliding block, a spring pin is arranged inside the second unlocking sliding block, the top end of the baffle is provided with a locking hole, all the baffles are positioned on the same plane, when the second unlocking sliding block moves along the baffle, the spring pin can cross the locking hole, when the baffle selected by the selecting rod deforms, the second unlocking sliding block and the selecting rod rotate relatively, the unlocking column and the second unlocking sliding block are in threaded transmission and then move downwards for a preset distance, the spring pin is pressed into the locking hole after the unlocking column moves downwards, and the second unlocking sliding block and the corresponding baffle are locked.
10. The foundation pit enclosure displacement monitoring device of claim 6, wherein: the middle part of selecting the pole is provided with the indicator board, and the indicator board extends to the direction that is close to the foundation ditch middle part.
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| CN115681714B (en) | 2023-09-05 |
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