CN115094962B - Bored concrete pile concrete height measuring device - Google Patents
Bored concrete pile concrete height measuring device Download PDFInfo
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- CN115094962B CN115094962B CN202210872670.7A CN202210872670A CN115094962B CN 115094962 B CN115094962 B CN 115094962B CN 202210872670 A CN202210872670 A CN 202210872670A CN 115094962 B CN115094962 B CN 115094962B
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- 239000007790 solid phase Substances 0.000 claims abstract description 26
- 239000007791 liquid phase Substances 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 25
- 230000000694 effects Effects 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 22
- 230000006698 induction Effects 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 10
- 230000005684 electric field Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000010009 beating Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
- G01F23/16—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
- G01F23/18—Indicating, recording or alarm devices actuated electrically
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- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to a bored pile concrete height measuring device which comprises a rod body, a piezoelectric device arranged at one end of the rod body and a warning device arranged at the other end of the rod body, wherein the piezoelectric device is arranged at the other end of the rod body; the rod body is provided with scales; the warning device receives the pressure electric signal of the piezoelectric device and gives a warning to staff after exceeding a set threshold; the device can eliminate interference of manual operation, can eliminate interference of a concrete solid-phase liquid-phase junction, converts pressure information into an electric signal through the piezoelectric device, and automatically gives out warning under the condition that a preset threshold value is exceeded, so that an operator can simply and accurately measure the concrete solid-phase height meeting the requirements, reliable reference data is provided for judging concrete pouring conditions, and pouring height deficiency or pouring waste is avoided.
Description
Technical Field
The invention relates to the field of construction, in particular to a bored pile concrete height measuring device.
Background
And (3) pile filling construction, wherein foundation soil is formed by mechanical drilling, compaction of steel pipes or manual pile hole digging, then a reinforcement cage is placed in a pile hole, and then the pile is poured to form a concrete pile. Because the ground needs to be excavated downwards, the cast-in-situ bored pile is cast to the depth below the ground surface instead of to the ground surface, but in the casting process, the concrete has solid phase and liquid phase in the pile hole, the solid phase is precipitated below the liquid phase, concrete fine slag or soil is mixed in the liquid phase, the visibility is extremely low, the forming height of the cast-in-situ bored pile is based on the solid phase, therefore, the height of the concrete solid phase in the pile hole needs to be measured, the solid phase height is prevented from exceeding the design height, the concrete is not only wasted, but also the dismantling operation of the part of the cast-in-situ bored pile higher than the design height in the subsequent excavation process is increased, and the construction cost is increased. However, as described above, in the casting process, the liquid phase in the pile hole is too turbid, so that it is difficult to observe and measure, the concrete is not yet solidified in the casting process, the layering at the intersection between the solid phase and the liquid phase is not obvious, and it is difficult to measure by means of a rope.
Disclosure of Invention
The invention provides a bored pile concrete height measuring device which can eliminate interference of manual operation and interference of a concrete solid-phase liquid-phase junction, converts pressure information into an electric signal through a piezoelectric device and automatically gives out warning when the pressure information exceeds a preset threshold value, so that an operator can simply and accurately measure the concrete solid-phase height meeting the requirement, reliable reference data is provided for judging the concrete pouring condition, and pouring height shortage or pouring waste is avoided.
The technical scheme of the invention is as follows:
a bored pile concrete height measuring device comprises a rod body, a piezoelectric device arranged at one end of the rod body and a warning device arranged at the other end of the rod body; the rod body is provided with scales; the warning device receives the pressure electric signal of the piezoelectric device and gives a warning to staff after exceeding a set threshold value.
The upper part of the rod body is a telescopic rod or can be lengthened through threaded connection or clamping.
The lower part of the rod body comprises an upper rod body and a lower rod body which are connected through sliding keys and can mutually stretch but can not mutually rotate; a plurality of lower turning plates are hinged to the side wall of the lower end of the lower rod body; the lower turning plates are arranged in a V shape on the vertical section; a plurality of upper turning plates are hinged to the outer side wall of the upper rod body above the lower turning plate; the upper turning plates are arranged in an inverted V shape on the vertical section; a reflecting cylinder with certain elasticity is sleeved outside the rod body between the lower turning plate and the upper turning plate; the bottom end of the reflecting cylinder is respectively hinged with the lower turning plate, and the top end of the reflecting cylinder is respectively hinged with the upper turning plate; the middle part of the reflecting cylinder is provided with a shrinking neck part, so that a thin annular flow passage is formed between the shrinking neck part and the rod body; a plurality of first electrodes are arranged in the space surrounded by the reflecting cylinder and the rod body above the neck part, and an external circuit discharges through the first electrodes; the length of the upper turning plate is larger than the distance between the rod body and the peripheral reinforcement cage or the hole wall; the length of the lower turning plate is smaller than the distance between the rod body and the peripheral reinforcement cage or the hole wall; the upper turning plate and the lower turning plate are staggered up and down.
Wherein, the lower panel turnover surface in the reflection section of thick bamboo outside is provided with a plurality of through-holes that permeate water.
Wherein, the upper turning plates all have a certain inclination angle to form a fan blade shape.
Wherein the rod body is a hollow rod, and the bottom of the rod body is closed by an opening and closing plate capable of opening and closing downwards in one direction; the piezoelectric device comprises a piezoelectric ceramic piece; the piezoelectric ceramic piece is attached to the lower end face of the opening and closing plate; a concrete vibrating rod is inserted into the concrete from the upper end of the rod body through the middle of the rod body to push the opening plate open for vibrating.
The concrete vibrating rod comprises a vibrating head at the front part, a power device at the rear part and a hose for connecting the vibrating head and the power device; the middle part of the hose is hermetically separated into a plurality of cabins along the length direction; the cabin is filled with electrorheological fluid; second electrodes are also respectively arranged in the cabins; an external circuit applies a strong electric field to the electrorheological fluid through the second electrode as needed.
Wherein, a dynamic clamping mechanism is arranged in the lower rod body; the dynamic clamping framework comprises an outer ring body and an inner ring body; a plurality of sleeves are uniformly arranged on the inner ring body; the sleeves respectively radially slide through a top rod; a pre-tightening spring is arranged between the top rod and the sleeve, and the top rod is propped against the outer circumferential surface of the hose through the pre-tightening spring; cambered surface bosses are arranged on the inner wall of the outer ring body corresponding to the jacking rods respectively; the top rod is in sliding contact with the cambered surface boss; the cambered surface boss rotates along with the outer ring body to push the ejection rod in the radial direction; the outer ring body is also extended to the center direction of the outer ring body to form a plurality of holding columns; the sliding hoop is held by the inner ring body, so that the outer ring body rotates under the condition of unchanged space between the outer ring body and the inner ring body; one end of the jacking rod propping against the outer circumferential surface of the hose is provided with friction lines or friction blocks for enhancing friction force, and an inclined surface is upwards arranged for the concrete vibrating rod to prop up the jacking rod outwards along the inclined surface so as to penetrate through the inner ring body; one end of the ejection rod, which is abutted against the cambered surface boss, is embedded with a ball or a roller for reducing friction force.
Wherein, a magnetic induction device is arranged in the cabin, and a magnetic mechanism is arranged on the dynamic clamping mechanism; when the magnetic induction device is close to the magnetic mechanism, the magnetic induction device sends an electric signal to the controller, and the controller can determine a cabin opposite to the dynamic clamping mechanism at the moment.
The measuring and vibrating method of the bored pile concrete height measuring device comprises the following steps:
(1) inserting the rod body into the cast-in-place pile, when the piezoelectric device at the front end of the rod body contacts the concrete solid phase, extruding the piezoelectric device to generate a current signal under the piezoelectric effect, triggering the warning device to give out warning when the current signal reaches a set threshold value, and reading the scale on the rod body by a worker at the moment to obtain the height of the solid phase concrete which meets the requirement;
(2) when the measured concrete pouring height meets the requirements, inserting a concrete vibrating rod from the upper end of the rod body, and inserting the vibrating head into the concrete by pushing the opening and closing plate downwards;
(3) at the moment, the dynamic clamping mechanism and the magnetic induction device are subjected to magnetic action to send an electric signal to the controller, the controller controls the external circuit to apply a strong electric field to electrorheological fluid in all cabins between the vibrating head and the cabin where the magnetic induction device is positioned through the second electrode, so that the electrorheological fluid is instantaneously converted into solid, and a hose part between the vibrating head and the cabin where the magnetic induction device is positioned is converted into a rod shape with rigid intensity;
(4) the controller controls an external circuit to apply a strong electric field to the liquid phase in the cast-in-place pile through the first electrode, so that huge energy is instantaneously released in the discharge channel, and the liquid in the channel is quickly vaporized, expanded and exploded to form a hydro-electric effect; the impact force generated by the liquid-electricity effect firstly acts on the upper turning plate upwards to push the upper turning plate to stretch the reflecting cylinder to turn upwards until the reflecting cylinder is abutted against the peripheral reinforcement cage or the hole wall, so that supporting force is provided, rod body upward movement is avoided, in the process, due to the inclined arrangement of the upper turning plate, the upper turning plate is rotated by horizontal component force in the process of impacting the upper turning plate by shock waves, so that the upper rod body, the lower rod body and the outer ring body are sequentially driven to rotate, the reflecting cylinder is simultaneously twisted, the top rod is preloaded against the outer circumferential surface of the hose which is solidified in the inner cabin under the action of a spring, the contact friction force of the top rod and the hose is far greater than the friction force of the top rod and the cambered surface boss, the inner ring body does not rotate along with the outer ring body in the first time, and the cambered surface boss presses the top rod inwards after the outer ring body starts to rotate, so that the friction force of the top rod and the hose is further increased, and the top rod is tightly clamped by the rotation of the outer ring body;
(5) the impact force of the liquid-electricity effect is transmitted downwards through the diameter-reducing part, but because the distance between the lower turning plate and the first electrode is larger than the distance between the upper turning plate and the first electrode, the impact force is delayed to act on the lower turning plate, so that the lower turning plate is pushed to stretch the reflecting cylinder to turn downwards, the concrete solid phase is flapped and extruded, and in the process, the water extruded by the lower turning plate flows away from the water-permeable through holes between two adjacent lower turning plates and on the lower turning plate; in the process, the lower rod body is driven to move downwards through the lower turning plate, so that the dynamic clamping mechanism in the lower rod body is driven to move downwards, and the concrete vibrating rod clamped by the dynamic clamping mechanism is driven to move downwards, so that the concrete vibrating rod penetrates into the concrete downwards;
(6) when the impact force generated by the hydro-electric effect is resolved, the stretched and twisted reflecting cylinder is recovered under the action of recovery elasticity, so that the upper turning plate is turned down again, the lower turning plate is turned up again, the impact wave is resolved firstly because the upper turning plate is acted by the impact wave firstly, and the lower turning plate rotates reversely while turning down under the action of the recovery force of the reflecting cylinder, so that the upper rod body, the lower rod body and the dynamic clamping mechanism are sequentially driven to rotate reversely, and the clamping of the hose is relieved by the dynamic clamping mechanism because of the reversion of the outer ring body; then, the lower turning plate turns under the action of the restoring force of the reflecting cylinder and drives the lower rod body to move upwards, so that the dynamic clamping mechanism which releases the clamping of the hose is driven to move upwards; the lower rod body rotates to drive the lower turning plate to rotate, and the position of the lower turning plate to be turned downwards for the next time is different due to energy loss;
(7) repeating the process of steps (3) to (6), wherein the vibrating head keeps vibrating; meanwhile, the beating, extruding and compacting effects on the concrete solid phase and the automatic clamping and pressing effects on the concrete vibrating rod are realized.
The invention has the following beneficial effects:
1. the device can eliminate interference of manual operation and interference of a concrete solid-phase liquid-phase junction, converts pressure information into an electric signal through the piezoelectric device, and automatically gives out warning when the pressure information exceeds a preset threshold value, so that an operator can simply and accurately measure the concrete solid-phase height meeting the requirements, reliable reference data is provided for judging the concrete pouring condition, and pouring height shortage or pouring waste is avoided.
2. The device disclosed by the invention not only can measure the height of the concrete poured in the bored pile, but also can compact and vibrate the concrete in the bored pile, so that the forming strength of the bored pile is obviously improved; in the prior art, the hose of the vibrating rod is flexible, concrete in the bored pile is extremely deep, and the surface of the hose is also positioned below a drilled hole, so that vibration and compaction are difficult to realize, and the conditions of uneven aggregate, bubbles and the like in the hose are difficult to eliminate.
3. The invention skillfully utilizes the elastic action of the reflecting cylinder, not only utilizes the restoring force of the stretching elasticity of the reflecting cylinder to realize the expansion and contraction of the upper rod body and the lower rod body, but also utilizes the torsional restoring force of the reflecting cylinder to drive the loosening clamping of the dynamic clamping mechanism and the rotating effect of the lower turning plate, so that the lower turning plate does not need to be designed into a whole structure in the process of multiple times of circulation, and can realize the uniform compaction effect of the lower turning plate on the solid phase surface of the concrete, so that the lower turning plate with a plurality of pieces of interval design not only is convenient for having resetting and overturning spaces in the process of upturning and resetting, but also can effectively discharge moisture by utilizing adjacent intervals in the process of upturning and reduce the resistance of liquid to the lower turning plate; the reflecting cylinder also uses the enclosing space formed by the reflecting cylinder to limit the propagation direction of the shock wave, so that the utilization rate of the shock wave is improved.
4. The invention skillfully combines the dynamic clamping mechanism with the linkage change of the upper rod body and the lower rod body, thereby realizing the continuous actions of clamping, pressing down, loosening, moving up and re-clamping the hose by the dynamic clamping mechanism, and having high integration degree and simple and stable structure.
Drawings
FIG. 1 is a schematic view of an apparatus for measuring the solid phase height of cast-in-place pile concrete according to the present invention;
FIG. 2 is a schematic view of the apparatus of the present invention when the apparatus is used to beat and roll the solid surface of a concrete;
FIG. 3 is a schematic illustration of the present invention using concrete tamper vibration;
fig. 4 is a schematic view of the dynamic clamping mechanism of the present invention when clamping a hose in a cured state.
The reference numerals in the drawings are as follows:
1. a rod body; 11. an upper rod body; 12. a lower rod body; 13. an opening plate; 21. a piezoelectric ceramic sheet; 3. a warning device; 4. a lower turning plate; 41. a water permeable through hole; 5. an upper turning plate; 6. a reflection cylinder; 61. a reduced diameter portion; 62. a first electrode; 7. a concrete vibrating rod; 71. a vibrating head; 73. a hose; 731. a cabin; 732. a second electrode; 8. a dynamic clamping mechanism; 81. an outer ring body; 811. arc-surface boss; 812. carrying out column holding; 82. an inner ring body; 821. a sleeve; 822. and (5) pushing the rod.
Detailed Description
The invention will now be described in detail with reference to the drawings and to specific embodiments.
Referring to fig. 1 to 4, a bored pile concrete height measuring apparatus includes a rod body 1, a piezoelectric device disposed at one end of the rod body 1, and a warning device 3 disposed at the other end of the rod body 1; the rod body 1 is provided with scales; the warning device 3 receives the pressure electric signal of the piezoelectric device and gives a warning to staff after exceeding a set threshold.
Furthermore, the upper part of the rod body 1 is a telescopic rod or can be lengthened through threaded connection or clamping connection.
Further, the lower part of the rod body 1 comprises an upper rod body 11 and a lower rod body 12 which are connected through sliding keys and can mutually stretch but can not mutually rotate; a plurality of lower turning plates 4 are hinged to the side wall of the lower end of the lower rod body 12; the plurality of lower turning plates 4 are arranged in a V shape on the vertical section; a plurality of upper turning plates 5 are hinged to the outer side wall of the upper rod body 11 above the lower turning plate 4; the upper turning plates 5 are arranged in an inverted V shape on the vertical section; the outer space of the rod body 1 between the lower turning plate 4 and the upper turning plate 5 is sleeved with a reflecting cylinder 6 with certain elasticity; the bottom end of the reflection cylinder 6 is hinged with the lower turning plate 4 respectively, and the top end of the reflection cylinder is hinged with the upper turning plate 5 respectively; the middle part of the reflecting cylinder 6 is provided with a neck 61, so that a thin annular flow passage is formed between the neck and the rod body 1; a plurality of first electrodes 62 are arranged in the space enclosed by the reflecting cylinder 6 and the rod body 1 above the necking part 61, and an external circuit discharges through the first electrodes 62; the length of the upper turning plate 5 is larger than the distance between the rod body 1 and the peripheral reinforcement cage or the hole wall; the length of the lower turning plate 4 is smaller than the distance between the rod body 1 and the peripheral reinforcement cage or the hole wall; the upper turning plate 4 and the lower turning plate 5 are arranged in a staggered mode up and down.
Further, a plurality of water permeable through holes 41 are formed on the surface of the lower turning plate 4 outside the reflecting cylinder 6.
Furthermore, the upper turning plates 4 have a certain inclination angle to form a fan blade shape.
Further, the rod body 1 is a hollow rod, and the bottom of the rod body is closed by an opening and closing plate 13 which can be opened and closed downwards in a unidirectional way; the piezoelectric device comprises a piezoelectric ceramic piece 21; the piezoelectric ceramic piece 21 is attached to the lower end face of the opening and closing plate 13; a concrete vibrating rod 7 is inserted into concrete from the upper end of the rod body 1 through the middle part of the rod body 1 to push the opening plate 13 open for vibrating.
Further, the concrete vibrating rod 7 comprises a vibrating head 71 at the front part, a power device at the rear part and a hose 73 for connecting the vibrating head 71 and the power device; the middle part of the hose 73 is hermetically separated into a plurality of cabins 731 along the length direction; the cabin 731 is filled with electrorheological fluid; a second electrode 732 is also disposed in the chamber 731; an external circuit applies a strong electric field to the electrorheological fluid through the second electrode 732 as needed.
Further, a dynamic clamping mechanism 8 is arranged in the lower rod body 12; the dynamic clamping framework comprises an outer ring body 81 and an inner ring body 82; a plurality of sleeves 821 are uniformly arranged on the inner ring 82; the sleeves 821 are each radially slid through a top rod 822; a pre-tightening spring is arranged between the top rod 822 and the sleeve 821, and the top rod 822 is propped against the outer circumferential surface of the hose 73 through the pre-tightening spring; cambered surface bosses 811 are arranged on the inner wall of the outer ring body 81 corresponding to the top rods 822 respectively; the top rod 822 is in sliding contact with the cambered surface boss 811; the cambered surface boss 811 rotates along with the outer ring body 81 to push the top rod 822 towards the radial direction; the outer ring 81 further extends to a further center direction to form a plurality of holding columns 812; the holding 812 slides the inner ring 82 to rotate the outer ring 81 with the distance between the outer ring 82 and the inner ring 82 unchanged; one end of the propping rod 822 propped against the outer circumferential surface of the hose 73 is provided with friction lines or friction blocks for enhancing friction force, and an inclined surface is upwards arranged for the concrete vibrating rod 7 to prop the propping rod 822 outwards along the inclined surface so as to pass through the inner ring 82; one end of the top rod 822 abutting against the cambered surface boss 811 is embedded with a ball or a roller for reducing friction force.
Further, a magnetic induction device is disposed in the cabin 731, and a magnetic mechanism is disposed on the dynamic clamping mechanism 8; when the magnetic induction device is in proximity to the magnetic mechanism, the magnetic induction device sends an electrical signal to a controller, which can determine the compartment 731 opposite the dynamic clamping mechanism 8 at that time.
Further, the measuring and vibrating method of the bored pile concrete height measuring device comprises the following steps:
(1) inserting the rod body 1 into the cast-in-place pile, when the piezoelectric device at the front end of the rod body 1 contacts the concrete solid phase, the piezoelectric device is extruded to generate a current signal under the piezoelectric effect, the current signal triggers the warning device 3 to give a warning when reaching a set threshold value, and at the moment, a worker reads the scale on the rod body 1 to obtain the height of the solid phase concrete which meets the requirement;
(2) when the measured concrete pouring height meets the requirement, inserting a concrete vibrating rod 7 from the upper end of the rod body 1, and inserting the vibrating head 71 to jack the opening plate 11 downwards into the concrete;
(3) at this time, the magnetic induction device opposite to the dynamic clamping mechanism 8 is magnetically acted to send an electric signal to the controller, and the controller controls the external circuit to apply a strong electric field to the electrorheological fluid in all the chambers 731 between the vibration head 71 and the chambers 731 where the magnetic induction device is located through the second electrode 732, so that the electrorheological fluid is instantaneously converted into a solid state, and then the flexible pipe 73 part between the vibration head 71 and the chambers 731 where the magnetic induction device is located is converted into a rod shape with rigid intensity;
(4) the controller controls the external circuit to apply a strong electric field to the liquid phase in the cast-in-place pile through the first electrode 62, so that huge energy is instantaneously released in the discharge channel, and the liquid in the channel is quickly vaporized, expanded and exploded to form a hydro-electric effect; the impact force generated by the hydraulic effect firstly acts on the upper turning plate 5 upwards to push the upper turning plate 5 to stretch the reflecting cylinder 6 to turn upwards until the reflecting cylinder 6 is abutted against the peripheral reinforcement cage or the hole wall, so that supporting force is provided, the rod body 1 is prevented from moving upwards, in the process, due to the inclined arrangement of the upper turning plate 5, the upper turning plate 5 is rotated by horizontal component force during the impact of the impact wave on the upper turning plate 5, so that the upper rod body 11, the lower rod body 12 and the outer ring body 81 are sequentially driven to rotate, in the process, the reflecting cylinder 6 is simultaneously twisted, the top rod 822 is abutted against the outer circumferential surface of the hose 73 which is solidified in the inner chamber 731 in a pretty mode under the action of a spring, the contact friction force between the top rod 822 and the hose 73 is far greater than the friction force between the top rod 822 and the cambered surface boss 811, the inner ring body 82 does not rotate along with the outer ring body 81, and the cambered surface boss 811 presses the top rod 822 inwards after the rotation of the outer ring body 81 starts, so that the friction force between the top rod 822 and the hose 73 is further increased, and the hose 73 is tightly clamped by the top rod 822;
(5) the impact force of the liquid-electricity effect is transmitted downwards through the diameter-reducing part 61 at the same time, but because the distance between the lower turning plate 4 and the first electrode 62 is larger than the distance between the upper turning plate 5 and the first electrode 62, the impact force is delayed to act on the lower turning plate 4, so that the lower turning plate 4 is pushed to stretch the reflecting cylinder 6 to turn downwards, the concrete solid phase is flapped and extruded, and in the process, the water extruded by the lower turning plate 4 flows away from the water-permeable through holes 41 between two adjacent lower turning plates 4 and on the lower turning plate 4; in the process, the lower turning plate 4 drives the lower rod body 12 to move downwards, so that the dynamic clamping mechanism 8 in the lower rod body 12 is driven to move downwards, and the concrete vibrating rod 7 clamped by the dynamic clamping mechanism 8 is driven to move downwards, so that the concrete vibrating rod 7 penetrates deeper into the concrete;
(6) when the impact force generated by the hydro-electric effect is resolved, the stretched and twisted reflecting cylinder 6 is restored under the action of restoring elasticity, so that the upper turning plate 5 is turned down again, the lower turning plate 4 is turned up again, the impact wave is resolved firstly because the upper turning plate 5 is acted by the impact wave firstly, the lower turning plate 4 is rotated reversely while being turned down under the action of restoring force of the reflecting cylinder 6, the upper rod body 11, the lower rod body 12 and the dynamic clamping mechanism 8 are sequentially driven to rotate reversely, and the dynamic clamping mechanism 8 releases the clamping of the hose 73 due to the inversion of the outer ring body 81; then, the lower turning plate 4 turns under the action of the restoring force of the reflecting cylinder 6 and drives the lower rod body 12 to move upwards, so as to drive the dynamic clamping mechanism 8 which releases the clamping of the hose 73 to move upwards; the lower rod body 12 rotates to drive the lower turning plate 4 to rotate, and the position of the lower turning plate 4 to be turned down next time is different due to further energy loss;
(7) repeating the processes of steps (3) to (6), in which the vibrating head 71 maintains the vibrating action; meanwhile, the beating, extruding and compacting effects on the concrete solid phase and the automatic clamping and pressing effects on the concrete vibrating rod 7 are realized.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (9)
1. The utility model provides a drilling bored concrete pile concrete height measuring device which characterized in that: comprises a rod body (1), a piezoelectric device arranged at one end of the rod body (1) and a warning device (3) arranged at the other end of the rod body (1); the rod body (1) is provided with scales; the warning device (3) receives the pressure electric signal of the piezoelectric device and gives a warning to staff after exceeding a set threshold value;
the lower part of the rod body (1) comprises an upper rod body (11) and a lower rod body (12) which are connected through sliding keys and can mutually stretch but can not mutually rotate; a plurality of lower turning plates (4) are hinged to the side wall of the lower end of the lower rod body (12); a plurality of lower turning plates (4) are arranged in a V shape on the vertical section; a plurality of upper turning plates (5) are hinged to the outer side wall of an upper rod body (11) above the lower turning plate (4); the upper turning plates (5) are distributed in an inverted V shape on the vertical section; the outer interval of the rod body (1) between the lower turning plate (4) and the upper turning plate (5) is sleeved with a reflecting cylinder (6) with certain elasticity; the bottom end of the reflecting cylinder (6) is hinged with the lower turning plate (4) respectively, and the top end of the reflecting cylinder is hinged with the upper turning plate (5) respectively; the middle part of the reflecting cylinder (6) is provided with a neck part (61) so that a thin annular flow passage is formed between the neck part and the rod body (1); a plurality of first electrodes (62) are arranged in the space surrounded by the reflecting cylinder (6) and the rod body (1) above the necking part (61), and an external circuit discharges through the first electrodes (62); the length of the upper turning plate (5) is larger than the distance between the rod body (1) and the peripheral reinforcement cage or the hole wall; the length of the lower turning plate (4) is smaller than the distance between the rod body (1) and the peripheral reinforcement cage or the hole wall; the upper turning plate (4) and the lower turning plate (5) are staggered up and down.
2. A bored pile concrete height measuring apparatus as set forth in claim 1, wherein: the upper part of the rod body (1) is a telescopic rod or can be lengthened through threaded connection or clamping.
3. A bored pile concrete height measuring apparatus as set forth in claim 1, wherein: the surface of the lower turning plate (4) at the outer side of the reflecting cylinder (6) is provided with a plurality of water permeable through holes (41).
4. A bored pile concrete height measuring apparatus as set forth in claim 1, wherein: the upper turning plates (4) are provided with a certain inclination angle to form a fan blade shape.
5. A bored pile concrete height measuring apparatus as set forth in claim 1, wherein: the rod body (1) is a hollow rod, and the bottom of the rod body is closed by an opening and closing plate (13) which can be opened and closed downwards in a unidirectional way; the piezoelectric device comprises a piezoelectric ceramic sheet (21); the piezoelectric ceramic piece (21) is attached to the lower end face of the opening and closing plate (13); a concrete vibrating rod (7) is inserted into the concrete from the upper end of the rod body (1) through the middle part of the rod body (1) to push the opening plate (13) aside for vibrating.
6. A bored pile concrete height measuring apparatus as set forth in claim 5, wherein: the concrete vibrating rod (7) comprises a vibrating head (71) at the front part, a power device at the rear part and a hose (73) for connecting the vibrating head (71) and the power device; the middle part of the hose (73) is hermetically separated into a plurality of cabins (731) along the length direction; the cabin (731) is filled with electrorheological fluid; a second electrode (732) is also arranged in the cabin (731) respectively; an external circuit applies a strong electric field to the electrorheological fluid through the second electrode (732) as needed.
7. A bored pile concrete height measuring apparatus as set forth in claim 6, wherein: a dynamic clamping mechanism (8) is arranged in the lower rod body (12); the dynamic clamping framework comprises an outer ring body (81) and an inner ring body (82); a plurality of sleeves (821) are uniformly arranged on the inner ring body (82); the sleeves (821) respectively slide radially through a top rod (822); a pre-tightening spring is arranged between the top rod (822) and the sleeve (821), and the top rod (822) is propped against the outer circumferential surface of the hose (73) through the pre-tightening spring; cambered surface bosses (811) are respectively arranged on the inner wall of the outer ring body (81) corresponding to the jacking rods (822); the top rod (822) is in sliding contact with the cambered surface boss (811); the cambered surface boss (811) rotates along with the outer ring body (81) to push the ejection rod (822) towards the radial direction; the outer ring body (81) is also extended to the central direction of the outer ring body to form a plurality of holding columns (812); the holding column (812) slides to hold the inner ring body (82) so that the outer ring body (81) rotates under the condition that the distance between the outer ring body and the inner ring body (82) is unchanged; one end of the jacking rod (822) propped against the outer circumferential surface of the hose (73) is provided with friction lines or friction blocks for enhancing friction force, and an inclined surface is upwards arranged for the concrete vibrating rod (7) to jack the jacking rod (822) outwards along the inclined surface so as to penetrate through the inner ring body (82); one end of the ejection rod (822) abutting against the cambered surface boss (811) is embedded with a ball or a roller for reducing friction force.
8. A bored pile concrete height measuring apparatus as set forth in claim 7, wherein: a magnetic induction device is arranged in the cabin (731), and a magnetic mechanism is arranged on the dynamic clamping mechanism (8); when the magnetic induction device is in proximity to the magnetic mechanism, the magnetic induction device sends an electrical signal to a controller, which can determine the compartment (731) that is now opposite the dynamic clamping mechanism (8).
9. A bored pile concrete height measuring apparatus as set forth in claim 8, wherein: the measuring and vibrating method of the bored pile concrete height measuring device comprises the following steps:
(1) inserting the rod body (1) into the cast-in-place pile, when the piezoelectric device at the front end of the rod body (1) contacts the concrete solid phase, extruding the piezoelectric device to generate a current signal under the piezoelectric effect, triggering the warning device (3) to give out warning when the current signal reaches a set threshold value, and reading the scale on the rod body (1) by a worker at the moment to obtain the height of the solid phase concrete which meets the requirement;
(2) when the measured concrete pouring height meets the requirement, a concrete vibrating rod (7) is inserted from the upper end of the rod body (1), and a vibrating head (71) pushes down the opening plate (11) to be inserted into concrete;
(3) at the moment, the dynamic clamping mechanism (8) is magnetically acted relative to the magnetic induction device to send an electric signal to the controller, the controller controls an external circuit to apply a strong electric field to electrorheological fluids in all cabins (731) between the vibration head (71) and the cabins (731) where the magnetic induction device is positioned through the second electrode (732) so that the electrorheological fluids are instantaneously converted into solid, and a hose (73) part between the vibration head (71) and the cabins (731) where the magnetic induction device is positioned is converted into a rod shape with rigid strength;
(4) the controller controls an external circuit to apply a strong electric field to the liquid phase in the cast-in-place pile through the first electrode (62) so that huge energy is instantaneously released in the discharge channel, and the liquid in the channel is quickly vaporized, expanded and exploded to form a hydro-electric effect; the impact force generated by the hydraulic effect firstly acts on the upper turning plate (5) upwards to push the upper turning plate (5) to stretch the reflecting cylinder (6) to turn upwards to be abutted against the peripheral reinforcement cage or the hole wall, so as to provide supporting force, the rod body (1) is prevented from moving upwards, in the process, due to the inclined arrangement of the upper turning plate (5), the upper turning plate (5) is subjected to horizontal component force to rotate in the process of impacting the upper turning plate (5) by the impact wave, so that the upper rod body (11), the lower rod body (12) and the outer ring body (81) are sequentially driven to rotate, the reflecting cylinder (6) is simultaneously twisted in the process, and the contact friction force between the rod (822) and the hose (73) is far greater than the friction force between the rod (822) and the cambered surface boss (811), so that the rod (822) is not rotated along with the outer ring body (81), the rod (822) is further pressed inwards by the cambered surface (811) after the rotation of the outer ring body (81), and the rod (822) is tightly clamped with the hose (73) in the process;
(5) the impact force of the liquid-electricity effect is transmitted downwards through the diameter-reducing part (61), but because the distance between the lower turning plate (4) and the first electrode (62) is larger than the distance between the upper turning plate (5) and the first electrode (62), the impact force acts on the lower turning plate (4) in a lagging way, so that the lower turning plate (4) is pushed to stretch the reflecting cylinder (6) to turn downwards, the concrete solid phase is flapped and extruded, and in the process, the water extruded by the lower turning plate (4) flows away from the water-permeable through holes (41) between two adjacent lower turning plates (4) and on the lower turning plate (4); in the process, the lower rod body (12) is driven to move downwards through the lower turning plate (4), so that the dynamic clamping mechanism (8) in the lower rod body (12) is driven to move downwards, and the concrete vibrating rod (7) clamped by the dynamic clamping mechanism (8) is driven to move downwards, so that the concrete vibrating rod (7) penetrates into concrete downwards;
(6) when the impact force generated by the hydro-electric effect is resolved, the stretched and twisted reflecting cylinder (6) is restored under the action of restoring elasticity, so that the upper turning plate (5) is turned down again, the lower turning plate (4) is turned up again, the impact wave is resolved firstly because the upper turning plate (5) is acted by the impact wave, the lower turning plate (4) is turned down under the action of restoring force of the reflecting cylinder (6) and rotates reversely, the upper rod body (11), the lower rod body (12) and the dynamic clamping mechanism (8) are sequentially driven to rotate reversely, and the dynamic clamping mechanism (8) releases the clamping of the hose (73) due to the inversion of the outer ring body (81); then, the lower turning plate (4) turns under the action of the restoring force of the reflecting cylinder (6) and drives the lower rod body (12) to move upwards, so as to drive the dynamic clamping mechanism (8) which releases the clamping of the hose (73) to move upwards; the lower rod body (12) rotates to drive the lower turning plate (4) to rotate, and the position of the lower turning plate (4) for the next lower turning is different due to energy loss;
(7) repeating the process of steps (3) to (6) in which the vibrating head (71) maintains the vibrating action; meanwhile, the beating, extruding and compacting effects on the concrete solid phase and the automatic clamping and pressing effects on the concrete vibrating rod (7) are realized.
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|---|---|---|---|
| CN202210872670.7A CN115094962B (en) | 2022-07-21 | 2022-07-21 | Bored concrete pile concrete height measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210872670.7A CN115094962B (en) | 2022-07-21 | 2022-07-21 | Bored concrete pile concrete height measuring device |
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| CN115094962B true CN115094962B (en) | 2024-01-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206034512U (en) * | 2016-09-14 | 2017-03-22 | 中冶集团武汉勘察研究院有限公司 | Bored concrete pile of driling under water construction monitoring devices |
| CN113174934A (en) * | 2021-04-15 | 2021-07-27 | 山东大学 | Device and method for controlling concrete over-filling height of bored cast-in-place pile |
| CN113186929A (en) * | 2021-04-15 | 2021-07-30 | 山东大学 | Cast-in-place pile concrete top surface elevation control device and method |
| CN215678400U (en) * | 2021-08-19 | 2022-01-28 | 中冶建工集团有限公司 | Monitoring structure for controlling concrete pouring quality of bored pile |
| CN113981977A (en) * | 2021-12-09 | 2022-01-28 | 中铁二十二局集团第四工程有限公司 | Pile top elevation control device for drilling and pouring pile foundation |
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- 2022-07-21 CN CN202210872670.7A patent/CN115094962B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206034512U (en) * | 2016-09-14 | 2017-03-22 | 中冶集团武汉勘察研究院有限公司 | Bored concrete pile of driling under water construction monitoring devices |
| CN113174934A (en) * | 2021-04-15 | 2021-07-27 | 山东大学 | Device and method for controlling concrete over-filling height of bored cast-in-place pile |
| CN113186929A (en) * | 2021-04-15 | 2021-07-30 | 山东大学 | Cast-in-place pile concrete top surface elevation control device and method |
| CN215678400U (en) * | 2021-08-19 | 2022-01-28 | 中冶建工集团有限公司 | Monitoring structure for controlling concrete pouring quality of bored pile |
| CN113981977A (en) * | 2021-12-09 | 2022-01-28 | 中铁二十二局集团第四工程有限公司 | Pile top elevation control device for drilling and pouring pile foundation |
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