CN111521111B - Traffic civil engineering deep foundation pit ladder cage - Google Patents
Traffic civil engineering deep foundation pit ladder cage Download PDFInfo
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- CN111521111B CN111521111B CN202010427906.7A CN202010427906A CN111521111B CN 111521111 B CN111521111 B CN 111521111B CN 202010427906 A CN202010427906 A CN 202010427906A CN 111521111 B CN111521111 B CN 111521111B
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- ladder cage
- frame body
- rectangular
- foundation pit
- rectangular frame
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
- G01B7/305—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes for testing perpendicularity
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G27/00—Temporary arrangements for giving access from one level to another for men or vehicles, e.g. steps, ramps
Abstract
The invention relates to a ladder cage for a deep foundation pit of traffic civil engineering, which is convenient for a user to enter a deep foundation pit for operation by utilizing the combination of a transverse ladder cage unit and a vertical ladder cage unit, realizes stable support of the structure by utilizing reinforcing ribs and cross ribs, and performs magnetic matching in the vertical ladder cage unit by utilizing magnetic pins and magnetic holes at the upper end and the lower end of a rectangular frame body on the upper ladder cage and the lower ladder cage adjacent to each other, so that the positioning is more accurate in the hoisting and installation of the vertical ladder cage unit, the installation efficiency is higher, meanwhile, an outer frame body is additionally arranged on a concrete pier, a movable verticality detection device is arranged between the outer frame body and the reinforcing ribs, the verticality deviation of the whole ladder cage in all directions in the front, back and left directions and right directions in the vertical direction is quantized by utilizing the matching of a conductive contact on a telescopic rod and a resistance wire driven by a rolling, the safety hazard is avoided, the structure is ingenious, the use is convenient and simple, and the practicability is strong.
Description
Technical Field
The invention belongs to the technical field of civil engineering safety equipment, and particularly relates to a traffic civil engineering deep foundation pit ladder cage.
Background
Underground engineering is not limited to shallow layers of conventional parking lots and civil air defense engineering. The underground buildings developed at present basically have the characteristics of large construction quantity and long period as the ground buildings, the depth of a foundation pit reaches dozens of meters to hundreds of meters, and the building area reaches hundreds of thousands of square meters to millions of square meters. In the underground operation construction of a deep foundation pit, an up-down channel special for constructors leading from the ground to the pit bottom needs to be arranged in the pit which is complex in soil environment, faces the danger that surrounding soil collapses at any time, and the ground is continuously provided with sundries falling and the ground at the pit bottom collapses, but a frame-built escalator used in the current ground construction is obviously insufficient, and the foundation pit is excavated at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation. Before excavation, an excavation scheme is determined according to geological and hydrological data and the conditions of buildings nearby the site, and waterproof drainage work is performed. The person who is not excavated can use the method of putting the side slope to stabilize the earth slope, and the size of the slope is determined according to the relevant construction regulations. When a deeper foundation pit and a nearby building are excavated, a foundation pit wall supporting method, a concrete spraying wall protecting method and a large foundation pit are used, even an underground continuous wall and a columnar bored pile are used for interlocking, so that an outer soil layer is prevented from collapsing, in the underground operation construction of the deep foundation pit, an up-down channel special for constructors leading from the ground to the pit bottom needs to be arranged in the pit with complex soil environment and danger of soil collapse at any time, continuous falling of sundries on the ground and collapse of the pit bottom ground, and the frame-built escalator used in the current ground building construction is obviously insufficient.
In the prior art, the foundation pit ladder cage is arranged on the side slope to transport people or materials firstly after the foundation pit side slope supporting is finished, the ladder cage in the prior art has a single structure and has no specific reinforcement measure, and is very inconvenient in the process of hoisting and mounting, difficult to position and mount, and simultaneously, as pointed out in the specification of the ladder cage construction, after the installation of the ladder cage and in the subsequent use process, the verticality of the ladder cage needs to be detected to ensure that the vertical deviation is within three thousandth of the range, because the influence of bad weather such as ladder cage service life or strong wind, need often detect the straightness that hangs down of ladder cage, do not have among the prior art to the device that the straightness that hangs down of ladder cage detects specially, consequently, we have researched and developed a traffic civil engineering deep basal pit ladder cage and are used for solving above problem.
Disclosure of Invention
Aiming at the problems, the invention provides a traffic civil engineering deep foundation pit ladder cage, and solves the problems that the structure is single, the installation is inconvenient, and the perpendicularity of the ladder cage is not detected in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme that the traffic civil engineering deep foundation pit ladder cage comprises a foundation pit which is subjected to side slope support, and a concrete abutment is poured at the bottom of the foundation pit, and is characterized in that the upper end of the concrete abutment is connected with a ladder cage group;
the ladder cage group is formed by splicing a plurality of vertical ladder cage units and transverse ladder cage units, each ladder cage unit comprises a rectangular frame body, the peripheral side wall of the rectangular frame body is fixedly connected with crossed ribs for fixed support, reinforcing steel bar protective nets are installed on the peripheral side wall of the rectangular frame body, the right side wall of the ladder cage at the lowest layer is provided with an outlet, the left end of the ladder cage at the uppermost layer is provided with an inlet and is communicated with the transverse ladder cage units at the inlet, an inclined stair is installed in the rectangular frame body of each vertical ladder cage unit, the stairs in two groups of vertically adjacent rectangular frame bodies are connected end to end and are arranged in a front-back staggered mode, the lower end of the stair is connected with a transition platform installed at the bottom of the rectangular frame body, magnetic holes are respectively formed around the lower end of the rectangular frame body, and magnetic pins matched with the magnetic holes are respectively connected around the upper end of the rectangular frame body, the magnetism of the magnetic pin is opposite to that of the magnetic hole, so that the magnetic pin at the upper end of the lower rectangular frame body can be smoothly inserted into the magnetic hole at the lower end of the upper rectangular frame body, and adjacent ladder cage units are fixedly connected through triangular rib plates;
the concrete pier on install a ladder cage straightness detection device that hangs down, ladder cage straightness detection device that hangs down and install and carry out electric connection between the controller on ladder cage group, the controller connect a drive switch, satisfy controller drive ladder cage straightness detection device that hangs down and detect the straightness that hangs down of ladder cage.
Preferably, the ladder cage verticality detection device comprises eight groups of reinforcing ribs vertically connected with four groups of vertical ladder cage units, each two groups of reinforcing ribs are vertically arranged at four corners of a rectangular frame of each vertical ladder cage unit in a right-angle direction, a rectangular outer frame arranged on a concrete pier is arranged outside each vertical ladder cage unit, a moving frame is vertically and slidably connected to the outer frame, the moving frame is connected with a lifting device arranged on the concrete pier, the lifting device drives the moving frame to vertically move relatively, the lifting device is electrically connected with a controller, a measuring device is connected between the moving frame and the reinforcing ribs, and the measuring device is electrically connected with the controller;
the measuring device comprises a fixed block which is arranged at the lower end of a movable frame and is matched with a corresponding reinforcing rib, a T-shaped groove is formed in the direction of the fixed block facing the reinforcing rib along the length direction of the fixed block, a T-shaped block is matched in the T-shaped groove in a sliding mode to meet the requirement that the T-shaped block can only move along the length direction of the T-shaped groove, a first spring is respectively connected between the two ends of the T-shaped block and the inner wall of the T-shaped groove, a cylinder is vertically arranged on one surface of the T-shaped block facing the reinforcing rib, a rectangular hole is formed in the end portion of the cylinder, a rectangular telescopic rod is matched in the rectangular hole in a sliding mode along the axial direction of the cylinder and cannot be separated from the rectangular hole, a first pressure spring is connected between one end of the telescopic rod inserted into the rectangular hole and the bottom of the rectangular hole, a rolling, the rolling wheels are in contact fit with the rectangular sliding grooves, the upper side of one end of the telescopic rod, which faces the reinforcing rib, is connected with an L-shaped rod, the lower end of the L-shaped rod is connected with a fixed cylinder, the lower end of the fixed cylinder is vertically connected with a conductive contact in a sliding way and is not separated, a second pressure spring is connected between one end of the conductive contact extending into the fixed cylinder and the bottom of the fixed cylinder, the resistance wire is wound outside the cylinder to meet the requirement that the end part of the conductive contact is always in contact with the resistance wire, the resistance wire and the conductive contact are electrically connected, and is electrically connected with a signal processor arranged on the cylinder, the signal processor is electrically connected with the controller, the signal processor is electrically connected with the alarm arranged on the outer frame body, so that the condition that the effective resistance value of the resistance wire is too large or too small can be met, and the signal processor triggers the controller to control the alarm to work.
Preferably, elevating gear including installing the driving motor on the concrete pier, still including installing the cab apron of crossing on moving the frame, driving motor's output shaft coaxial coupling lead screw, the other end of lead screw rotate to be connected in the upper end of outer frame body, and with cross screw-thread fit between the cab apron.
Preferably, the end of the rectangular hole is connected with a limiting frame, one end of the telescopic rod inserted into the rectangular hole is connected with a limiting block matched with the limiting frame to limit the telescopic rod to be separated from the rectangular hole, one end of the conductive contact extending into the fixed cylinder is connected with a limiting ring, and the open end of the fixed cylinder is connected with a limiting ring matched with the limiting ring.
Preferably, the initial position of the lower end of the conductive contact matched with the resistance wire is located at the midpoint of the stroke of the resistance wire.
Preferably, the fourth bevel gear is coaxially provided with a cam arranged outside the query table, the cam is in sliding fit with a matching cylinder in the direction of the outer edge, the matching cylinder is vertically connected to the side wall of the query table in a sliding manner, the lower end of the matching cylinder is vertically matched with a bolt and does not break away from the bolt, a third spring arranged in the matching cylinder is connected between the bolt and the matching cylinder, a pin hole matched with the bolt is formed in the rotating shaft of the deflector rod along the radial direction, and the rotation of the rotating shaft of the deflector rod can be limited by the matching of the bolt and the pin hole.
Preferably, four corners of the upper end of the movable frame are respectively connected with a shielding plate.
The invention has the beneficial effects that: the invention facilitates the user to enter a deep foundation pit with deeper vertical height for operation by utilizing the combination of the transverse ladder cage unit and the vertical ladder cage unit, realizes stable support of the structure by utilizing the reinforcing ribs and the cross ribs, and utilizes the magnetic pins and the magnetic holes at the upper end and the lower end of the rectangular frame body on the upper ladder cage and the lower ladder cage in the vertical ladder cage unit to carry out magnetic matching, so that the positioning is more accurate and the installation efficiency is higher in the hoisting installation of the vertical ladder cage unit, meanwhile, the outer frame body is additionally arranged on the concrete pier, the movable detection device is arranged between the outer frame body and the reinforcing ribs, the offset of the whole ladder cage in all directions in the front, the back, the left and the right directions in the vertical direction is quantized by utilizing the matching of the conductive contact on the telescopic rod and the resistance wire driven by the rolling wheel, the amplification treatment of tiny displacement change is realized, the detection of the verticality of, the construction unit is beneficial to fine management of the construction unit, potential safety hazards are avoided, the structure is ingenious, the use is convenient and simple, the practicability is high, and the construction unit is suitable for popularization and use.
Drawings
Fig. 1 is a perspective view of the first stereoscopic structural diagram of the present invention.
Fig. 2 is a perspective view of the present invention.
Fig. 3 is a front view of the present invention.
Fig. 4 is a perspective view of the ladder cage assembly of the present invention.
Fig. 5 is a perspective view of the vertical ladder cage unit according to the present invention.
Fig. 6 is a perspective view two of the vertical ladder cage unit of the present invention.
Fig. 7 is a perspective view I of the ladder cage assembly of the present invention with the ladder cage assembly removed.
Fig. 8 is a perspective view II of the ladder cage assembly of the present invention with the ladder cage assembly removed.
Fig. 9 is a perspective view of the movable frame of the present invention with the shielding plate removed.
FIG. 10 is a perspective view of a part of the structure of the measuring apparatus of the present invention.
FIG. 11 is a top view of FIG. 10 of the present invention.
FIG. 12 is a cross-sectional view taken along plane A-A of FIG. 11 according to the present invention.
Fig. 13 is a perspective view and a partial sectional view of the telescopic rod and the connecting part thereof according to the present invention.
Reference numerals: 1. a concrete abutment; 2. a vertical ladder cage unit; 3. a transverse ladder cage unit; 4. a rectangular frame body; 5. a cross rib; 6. a steel bar protective net; 7. a staircase; 8. a transition platform; 9. a magnetic aperture; 10. a magnetic pin; 11. triangular rib plates; 12. a ladder cage verticality detection device; 13. reinforcing ribs; 14. an outer frame body; 15. moving the frame; 16. a measuring device; 17. a fixed block; a T-shaped slot; a T-block; 20. a first spring; 21. a cylinder; 22. a rectangular hole; 23. a telescopic rod; 24. a first pressure spring; 25. a rolling wheel; 26. a rectangular chute; an L-shaped rod; 28. a fixed cylinder; 29. a conductive contact; 30. a second pressure spring; 31. a resistance wire; 32. an alarm; 33. a drive motor; 34. a transition plate; 35. a lead screw; 36. a limiting frame; 37. a limiting block; 38. a limiting ring; 39. a confinement ring; 40. a shielding plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 13 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 embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The traffic civil engineering deep foundation pit ladder cage comprises a foundation pit with a side slope support, wherein a concrete abutment 1 is poured at the bottom of the foundation pit, and the concrete abutment 1 selects different strengths of concrete according to the geological conditions and the settlement degree of the foundation pit, and is characterized in that the upper end of the concrete abutment 1 is connected with a ladder cage group;
the ladder cage group is formed by splicing a plurality of vertical ladder cage units 2 and transverse ladder cage units 3, each ladder cage unit comprises a rectangular frame body 4, the peripheral side wall of the rectangular frame body 4 is fixedly connected with crossed ribs 5 for fixed support, and meanwhile, the peripheral side wall of the rectangular frame body 4 is provided with a reinforcing steel bar protection net 6, the right side wall of the ladder cage at the lowest layer is provided with an outlet, the left end of the ladder cage at the uppermost layer is provided with an inlet and is communicated with the transverse ladder cage units 3 at the inlet, an inclined stair 7 is arranged in the rectangular frame body 4 of each vertical ladder cage unit 2, the stairs 7 in two groups of vertically adjacent rectangular frame bodies 4 are connected end to end and are arranged in a front-back staggered manner, the lower end of the stair 7 is connected with a transition platform 8 arranged at the bottom of the rectangular frame body 4, the periphery of the lower end of the rectangular frame body 4 is respectively provided with magnetic holes 9, the periphery of the upper end of the rectangular frame body 4 is respectively connected with magnetic pins 10 matched with the magnetic holes 9, the magnetism of the magnetic pins 10 is opposite to that of the magnetic holes 9, the requirement that the magnetic pins 10 at the upper end of the lower rectangular frame body 4 can be smoothly inserted into the magnetic holes 9 at the lower end of the upper rectangular frame body 4 is met, adjacent ladder cage units are fixedly connected through triangular rib plates 11, when the ladder cages are installed, firstly, supporting treatment is carried out on the side slope of a foundation pit, danger is prevented from being produced in the operation process in construction, secondly, the bottom of a foundation pit is measured, concrete with proper strength is selected for pouring of the concrete abutment 1, foundation bolts used for installation are embedded in the pouring process, after pouring is completed, the vertical ladder cage units 2 at the lowest layer are installed on the concrete abutment 1 through bolts, and then the vertical ladder cage units 2 are installed layer by layer in a hoisting mode, in the process of hoisting and mounting, the upper rectangular frame body 4 can be quickly positioned in the process of hoisting by matching the magnetic hole 9 at the lower end of the upper rectangular frame body 4 with the magnetic pin 10 at the upper end of the lower rectangular frame body 4, so that a large amount of mounting time is saved, and the mounting efficiency is improved;
concrete pier 1 on install a ladder cage straightness detection device 12 that hangs down, ladder cage straightness detection device 12 and install and carry out electric connection between the controller on ladder cage group, the controller connect a drive switch, satisfy controller drive ladder cage straightness detection device 12 that hangs down and detect the straightness that hangs down of ladder cage, need carry out the detection of straightness that hangs down to ladder cage after the ladder cage installation is accomplished and in subsequent use in the standard of the safe construction of current ladder cage to reach the vertical deviation and be no more than three per thousand technical requirement, consequently, we add ladder cage straightness detection device 12 that hangs down on this basis for solve the detection problem of ladder cage straightness, avoid the existence of potential safety hazard and the emergence of incident.
In the second embodiment, on the basis of the first embodiment, the device 12 for detecting the verticality of the ladder cage comprises eight groups of reinforcing ribs 13 vertically connected to four groups of vertical ladder cage units 2, the reinforcing ribs 13 are respectively arranged at four corners of the rectangular frame body 4 of the vertical ladder cage unit 2 in a group of two reinforcing ribs in a right angle direction, a rectangular outer frame body 14 arranged on the concrete abutment 1 is arranged outside the vertical ladder cage unit, the outer frame body 14 is vertically connected with a movable frame 15 in a sliding manner, the movable frame 15 is connected with a lifting device arranged on the concrete abutment 1, the lifting device drives the movable frame 15 to vertically move relatively, the lifting device is electrically connected with the controller, a measuring device 16 is connected between the movable frame 15 and the reinforcing rib 13, and the measuring device 16 is electrically connected with the controller;
the measuring device 16 comprises a fixed block 17 which is arranged at the lower end of a movable frame 15 and matched with a corresponding reinforcing rib 13, the fixed block 17 is provided with a T-shaped groove 18 along the length direction thereof in the direction towards the reinforcing rib 13, the T-shaped groove 18 is internally matched with a T-shaped block 19 in a sliding way to meet the requirement that the T-shaped block 19 can only move along the length direction of the T-shaped groove 18, two ends of the T-shaped block 19 are respectively connected with the inner wall of the T-shaped groove 18 through a first spring 20, one surface of the T-shaped block 19 towards the reinforcing rib 13 is vertically provided with a cylinder 21, the end part of the cylinder 21 is provided with a rectangular hole 22, the rectangular hole 22 is internally matched with a rectangular telescopic rod 23 in a sliding way along the axial direction of the cylinder 21 and is not separated from the cylinder 21, a first pressure spring 24 is connected between one end of the telescopic rod 23 inserted into the rectangular hole 22 and the bottom of the, the telescopic rod type electric heating device further comprises a rectangular sliding groove 26 vertically formed in one end, facing the corresponding fixed block 17, of the reinforcing rib 13, the rolling wheel 25 is in contact fit with the rectangular sliding groove 26, the upper side, facing one end of the reinforcing rib 13, of the telescopic rod 23 is connected with an L-shaped rod 27, the lower end of the L-shaped rod 27 is connected with a fixed barrel 28, the lower end of the fixed barrel 28 is vertically connected with a conductive contact 29 in a sliding mode and is not separated from the conductive contact 29, a second pressure spring 30 is connected between one end, extending into the fixed barrel 28, of the conductive contact 29 and the bottom of the fixed barrel 28, a resistance wire 31 is wound outside the barrel 21, the end portion of the conductive contact 29 is always kept in contact with the resistance wire 31, the resistance wire 31 and the conductive contact 29 are electrically connected, the resistance wire 31 is electrically connected with a signal processor mounted on the barrel 21, the signal processor is electrically connected with a controller, and the signal, the condition that the effective resistance value of the resistance wire 31 is too large or too small can be met, the effective resistance value of the resistance wire 31 can be converted into an electric signal by the signal processor to be transmitted to the controller, the conductive contact 29, the resistance wire 31, the signal processor and an external power supply form a detection circuit, the current in the circuit can be converted into the electric signal by the signal processor to be transmitted to the controller, once the circuit in the detection circuit is too large or too small, the moving position of the conductive contact 29 is far away from the center of the resistance wire 31, once the limit end value given by the signal processor is exceeded, the alarm 32 can be controlled by the controller to give an alarm, when the alarm is used, the controller controls the lifting device to enable the moving frame 15 to move in the vertical direction, due to the existence of the first pressure spring 24, the rolling wheel 25 is always in contact fit with the bottom of the rectangular sliding groove 26 in the rectangular sliding groove 26, the T-shaped block 19 is driven to move in the vertical direction, the deviation of the T-shaped block 19 in the direction perpendicular to the detection direction of the T-shaped block 19, namely, in the direction parallel to the axial direction of the first spring 20, is moved by means of the deformation of the first spring 20, so as to realize the return, here, it is to be noted that the T-shaped block 19 and the connected measuring device 16 do not detect the deviation of the corresponding reinforcing rib 13 in the direction parallel to the axial direction of the first spring 20, therefore, the detection in the direction is realized by means of the other group of measuring devices 16 matched with the T-shaped block 19, the rolling wheel 25 is utilized to roll, when the reinforcing rib 13 deviates along with the whole ladder cage, the rolling wheel 25 compresses or stretches the first pressure spring 24, so as to drive the L-shaped rod 27 to perform the displacement change in the axial direction of the cylinder 21, and thus change the relative position of the end conductive contact, thereby change the effective resistance of resistance wire 31 in real time, and then change the electric current size in the circuit that conductive contact 29 and resistance wire 31 constitute, in case exceed the current value of upper limit or lower limit, the treater can be carried this trigger signal for the controller, the controller can control alarm 32 and report to the police, remind the user to take place the skew that surpasss the standard, need overhaul and maintenance work, stop using the ladder cage to carry out maintenance work, wait to maintain and accomplish and continue to carry out the straightness detection work that hangs down, it changes to be in the straightness that hangs down of construction standard within range up to whole.
Third embodiment, on the basis of the second embodiment, the lifting device includes a driving motor 33 installed on the concrete abutment 1, and further includes a transition plate 34 installed on the moving frame 15, an output shaft of the driving motor 33 is coaxially connected with a lead screw 35, the other end of the lead screw 35 is rotatably connected to the upper end of the outer frame 14 and is in threaded fit with the transition plate 34, the lead screw 35 is rotated by the rotation of the driving motor 33, and the rotation of the transition plate 34 is limited by the outer frame 14, so that the moving frame 15 can only move in the vertical direction to complete the reciprocating detection work.
In the fourth embodiment, on the basis of the second embodiment, the end of the rectangular hole 22 is connected with a limiting frame 36, one end of the telescopic rod 23 inserted into the rectangular hole 22 is connected with a limiting block 37 matched with the limiting frame 36 to limit the telescopic rod 23 to be pulled out therefrom, one end of the conductive contact 29 extending into the fixed cylinder 28 is connected with a limiting ring 38, and the open end of the fixed cylinder 28 is connected with a limiting ring 39 matched with the limiting ring 38. The purpose of the stop 37 is to prevent the extension rod 23 from coming out of the rectangular hole 22, and the purpose of the stop 39 is to prevent the conductive contact 29 from coming out of the fixed cylinder 28.
In the fifth embodiment, on the basis of the second embodiment, the initial position where the lower end of the conductive contact 29 is engaged with the resistance wire 31 is at the midpoint of the stroke of the resistance wire 31, and the purpose of this arrangement is to enable a large amount of detection to be performed no matter which direction the reinforcing rib 13 and the whole ladder cage are shifted in the front, back, left and right directions in the horizontal direction.
In the sixth embodiment, on the basis of the second embodiment, the four corners of the upper end of the movable frame 15 are respectively connected with the shielding plates 40, and the shielding plates 40 prevent the resistance wire from being polluted by pollutants when the elevator cage verticality measuring device 12 is not used or in the using process.
When the invention is used, firstly, the side slope of the foundation pit is supported to prevent danger in the construction process, secondly, the bottom of the foundation pit is measured, concrete with proper strength is selected to pour the concrete abutment 1, the used anchor bolts are pre-buried and installed in the pouring process, after pouring is finished, the vertical ladder cage unit 2 at the lowest layer is installed on the concrete abutment 1 by utilizing the bolts, then the vertical ladder cage unit 2 is installed layer by adopting a hoisting mode, in the hoisting and installing process, the verticality of the upper layer rectangular frame 4 can be rapidly positioned in the hoisting process by matching the magnetic hole 9 at the lower end of the upper layer rectangular frame 4 with the magnetic pin 10 at the upper end of the lower layer rectangular frame 4, a large amount of installation time is saved, the installation efficiency is improved, after the ladder cage is installed, a detection device is installed, after the installation is finished, the driving motor 33 and the driving switch are started, so that the controller controls the driving motor 33 to work, the driving motor 33 drives the lead screw 35 to rotate, so that the moving frame 15 moves in the vertical direction, due to the existence of the first pressure spring 24, the rolling wheel 25 always contacts and cooperates with the bottom of the rectangular sliding groove 26 in the rectangular sliding groove 26, the T-shaped block 19 is driven to move in the vertical direction along with the movement of the moving frame 15, by utilizing the rolling of the rolling wheel 25, when the reinforcing rib 13 deviates along with the whole ladder cage, the rolling wheel 25 can compress or stretch the first pressure spring 24, so that the effective resistance value of the resistance wire 31 is changed in real time, the current magnitude in a circuit formed by the conductive contact 29 and the resistance wire 31 is changed, once the current value exceeds the upper limit or the lower limit, the processor can transmit the trigger signal to the controller, and the controller can control the alarm 32 to give an alarm, remind the user to take place to surpass standard skew, need overhaul and maintenance work, stop using the ladder cage to carry out maintenance work, wait to maintain the completion and continue to carry out the straightness detection work that hangs down, until whole perpendicularity change that is in the construction specification within range, finish using, utilize driving motor 33 drive to remove frame 15 and return to initial position and await the standby, wait for the next detection of straightness that hangs down and use.
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 (5)
1. The traffic civil engineering deep foundation pit ladder cage comprises a foundation pit subjected to side slope support, and a concrete abutment (1) is poured at the bottom of the foundation pit, and is characterized in that the upper end of the concrete abutment (1) is connected with a ladder cage group;
the ladder cage group is formed by splicing a plurality of vertical ladder cage units (2) and transverse ladder cage units (3), each ladder cage unit comprises a rectangular frame body (4), the peripheral side wall of the rectangular frame body (4) is fixedly connected with crossed ribs (5) for fixing and supporting, the peripheral side wall of the rectangular frame body (4) is simultaneously provided with a reinforcing steel bar protective net (6), the right side wall of the ladder cage at the lowest layer is provided with an outlet, the uppermost layer is provided with an inlet at the left end of the ladder cage and is communicated with the transverse ladder cage units (3) at the inlet, an inclined stair (7) is arranged in the rectangular frame body (4) of each vertical ladder cage unit (2), the stairs (7) in two groups of vertically adjacent rectangular frame bodies (4) are connected end to end and are arranged in a front-back staggered mode, the lower end of the stair (7) is connected with a transition platform (8) arranged at the bottom of the rectangular frame body (4), the periphery of the lower end of the rectangular frame body (4) is respectively provided with a magnetic hole (9), the periphery of the upper end of the rectangular frame body (4) is respectively connected with a magnetic pin (10) matched with the magnetic hole (9), the magnetism of the magnetic pin (10) is opposite to that of the magnetic hole (9), the requirement that the magnetic pin (10) at the upper end of the lower rectangular frame body (4) can be smoothly inserted into the magnetic hole (9) at the lower end of the upper rectangular frame body (4) is met, and adjacent ladder cage units are fixedly connected through a triangular rib plate (11);
a ladder cage verticality detection device (12) is installed on the concrete abutment (1), the ladder cage verticality detection device (12) is electrically connected with a controller installed on a ladder cage group, the controller is connected with a driving switch, and the controller drives the ladder cage verticality detection device (12) to detect the verticality of the ladder cage;
the ladder cage verticality detection device (12) comprises eight groups of reinforcing ribs (13) which are vertically connected with four groups of vertical ladder cage units (2), the reinforcing ribs (13) are respectively arranged at four corners of a rectangular frame body (4) of the vertical ladder cage unit (2) in a right-angle direction in pairs, a rectangular outer frame body (14) arranged on the concrete abutment (1) is arranged outside the vertical ladder cage unit, the outer frame body (14) is vertically connected with a movable frame (15) in a sliding manner, the movable frame (15) is connected with a lifting device arranged on the concrete abutment (1) to meet the requirement that the lifting device drives the movable frame (15) to vertically move relatively, the lifting device is electrically connected with the controller, a measuring device (16) is connected between the movable frame (15) and the reinforcing ribs (13), and the measuring device (16) is electrically connected with the controller;
the measuring device (16) comprises a fixed block (17) which is arranged at the lower end of a movable frame (15) and matched with a corresponding reinforcing rib (13), wherein a T-shaped groove (18) is formed in the direction of the fixed block (17) towards the reinforcing rib (13) along the length direction of the fixed block, a T-shaped block (19) is matched in the T-shaped groove (18) in a sliding mode, the T-shaped block (19) can only move along the length direction of the T-shaped groove (18), a first spring (20) is connected between each of two ends of the T-shaped block (19) and the inner wall of the T-shaped groove (18), a cylinder (21) is vertically arranged on one surface of the T-shaped block (19) towards the reinforcing rib (13), a rectangular hole (22) is formed in the end portion of the cylinder (21), a rectangular telescopic rod (23) is matched in the rectangular hole (22) in a sliding mode along the axial direction of the cylinder (, the telescopic link (23) insert and be connected a first pressure spring (24) between the bottom of one end in rectangular hole (22) and rectangular hole (22), the other end of telescopic link (23) rotate and roll wheel (25), still include vertical division at reinforcing rib (13) rectangle spout (26) towards corresponding fixed block (17) one end, roll wheel (25) and rectangle spout (26) between the contact fit, telescopic link (23) connect an L shape pole (27) towards the upside of the one end of reinforcing rib (13), the lower extreme of L shape pole (27) connect a fixed cylinder (28), the vertical sliding connection of lower extreme of fixed cylinder (28) a conductive contact (29) and satisfy and do not break away from, conductive contact (29) extend to fixed cylinder (28) in one end and be connected a second pressure spring (30) between the fixed cylinder (28) bottom, the cylinder (21) outward wind and be equipped with resistance wire (31), satisfy the tip of conductive contact (29) and keep in contact with resistance wire (31) all the time, resistance wire (31), conductive contact (29) between electric connection, and with install the signal processor electric connection on cylinder (21), electric connection between signal processor and the controller, signal processor and install alarm (32) on outer frame body (14) and be connected electrically, satisfy that the effective resistance value of resistance wire (31) is too big or undersize all can trigger controller control alarm (32) behind the signal processor and carry out work.
2. The traffic civil engineering deep foundation pit ladder cage according to claim 1, wherein the lifting device comprises a driving motor (33) installed on the concrete abutment (1), and further comprises a transition plate (34) installed on the movable frame (15), an output shaft of the driving motor (33) is coaxially connected with a lead screw (35), and the other end of the lead screw (35) is rotatably connected to the upper end of the outer frame body (14) and is in threaded fit with the transition plate (34).
3. The traffic and civil engineering deep foundation pit ladder cage as claimed in claim 1, wherein the end of the rectangular hole (22) is connected with a limit frame (36), one end of the telescopic rod (23) inserted into the rectangular hole (22) is connected with a limit block (37) matched with the limit frame (36) and used for limiting the telescopic rod (23) to be pulled out, one end of the conductive contact (29) extending into the fixed cylinder (28) is connected with a limit ring (38), and the open end of the fixed cylinder (28) is connected with a limit ring (39) matched with the limit ring (38).
4. The traffic civil engineering deep foundation pit ladder cage as claimed in claim 1, wherein the initial position where the lower end of the conductive contact (29) is matched with the resistance wire (31) is at the midpoint of the stroke of the resistance wire (31).
5. The traffic civil engineering deep foundation pit ladder cage according to claim 1, wherein four corners of the upper end of the movable frame (15) are respectively connected with a shielding plate (40).
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| CN202010427906.7A CN111521111B (en) | 2020-05-20 | 2020-05-20 | Traffic civil engineering deep foundation pit ladder cage |
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