CN108426624B - Floating ball liquid level device for measuring concrete liquid level of cast-in-place pile foundation and using method thereof - Google Patents
Floating ball liquid level device for measuring concrete liquid level of cast-in-place pile foundation and using method thereof Download PDFInfo
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- CN108426624B CN108426624B CN201810121457.6A CN201810121457A CN108426624B CN 108426624 B CN108426624 B CN 108426624B CN 201810121457 A CN201810121457 A CN 201810121457A CN 108426624 B CN108426624 B CN 108426624B
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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
- G01F23/30—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 floats
- G01F23/40—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 floats using bands or wires as transmission elements
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a floating ball liquid level device for measuring the concrete liquid level of a cast-in-place pile foundation and a using method thereof. The device comprises a floating ball, a measuring device, a displacement sensor, a traction rope, a fixed support and a protective cover, wherein the measuring device comprises a spring deformer which is positioned inside a hollow part of the floating ball; the floating ball is a sphere, the upper hemisphere is a hollow part, the lower hemisphere is a solid part, the protective cover is welded on the fixed support, and the floating ball is connected with the fixed support through a traction rope and is arranged in the protective cover; the floating ball liquid level device is integrally connected to the reinforcement cage in a welding or binding mode, so that the height of the concrete liquid level can be controlled. The device monitors the tiny deformation of the spring through the joint work of the mechanical unit and the electronic element, more accurately controls the liquid level height, ensures that the device is safe and reliable, is simple to operate, and can effectively control the over-irrigation of the drilled pile; the floating ball can be selected to distinguish the concrete layer from the floating slurry layer, so that the liquid level of the concrete can be effectively controlled.
Description
Technical Field
The invention relates to a floating ball liquid level device for measuring the concrete liquid level of a cast-in-place pile foundation and a using method thereof, belonging to the field of measuring devices.
Background
the method is characterized in that a plurality of large buildings (structures) such as various buildings, bridges, port wharfs and the like are increased along with the high-speed economic development of China, bored cast-in-place piles become one of the main basic forms of the buildings (structures) due to the unique technology, economy and superiority of the bored cast-in-place piles, the process of underwater cast-in-place concrete is adopted for the bored cast-in-place piles, the designed elevation of concrete is required to be over-poured to a certain height frequently for ensuring the pile top quality, and the over-poured part is removed after foundation pit excavation.
in order to respond to the call for building a conservation-oriented society and meet the requirements of the national engineering community, on the basis of fully comparing various existing contact type liquid level detection methods, the Archimedes principle and Hooke's law are used for reference, the key technology of a floating ball liquid level device for measuring the concrete liquid level of a cast-in-place pile foundation is developed and analyzed by taking the current engineering situation as the background, and the action mechanism of the floating ball liquid level device is clearly explained. And a series of problems of concrete pouring speed, concrete uniformity, concrete feeding continuity, concrete slump, concrete initial setting time, pouring time and the like in actual pouring are fully considered. Because the using environment of the device is concrete grout and a reinforcement cage, a mechanical structure is combined with an automatic control device as far as possible, so that the detection accuracy is enhanced.
disclosure of Invention
The invention aims to provide a floating ball liquid level device for measuring the concrete liquid level of a cast-in-place pile foundation and a use method thereof.
The floating ball liquid level device provided by the invention is different from the conventional liquid level meter. In the liquid level meter in the prior art, the floating ball is attracted by magnetism by utilizing the magnetic action, and the position of the liquid level is converted into an electric signal. The device is applied to a cast-in-place pile foundation, and a magnetic field can be interfered due to the existence of a steel reinforcement cage in the pile foundation, so that a mechanical measurement means is adopted, in the concrete casting process, the pulling force of a pulling rope on a spring inside a floating ball is increased along with the rise of the liquid level, the principle that the Hooke's law, namely the extension amount of the spring is in direct proportion to the stressed amount, is utilized, and then a measurement system converts the extension amount of the spring into an electric signal to realize the control of the concrete liquid level.
the invention is realized by the following technical scheme:
The invention provides a floating ball liquid level device for measuring the liquid level of cast-in-place pile foundation concrete, which comprises a floating ball, a measuring device, a displacement sensor, a traction rope, a fixed support and a protective cover, wherein the measuring device comprises a spring deformer which is positioned inside the hollow part of the floating ball, so that the safety and the stability of a detection system are well protected; the displacement sensor is positioned in the hollow part of the floating ball and also aims to protect the stable transmission of signals; the whole floating ball liquid level device is connected to the reinforcement cage in a welding or binding mode, so that the liquid level height of concrete can be controlled;
The floating ball is a sphere, the upper hemisphere is a hollow part, the lower hemisphere is a solid part, the shield is welded on the fixed support, and the floating ball is connected with the fixed support through a traction rope and is arranged on the fixed support in the shield;
the spring deformation instrument is an instrument and comprises a spring and a displacement measuring instrument, wherein the displacement measuring instrument is positioned below the spring;
The spring deformation instrument and the displacement sensor are arranged at the hollow part of the floating ball, a thin channel is arranged at the middle part of the solid part of the floating ball, one end of the traction rope penetrates through the channel to be connected with the bottom of the spring positioned at the hollow part of the floating ball, the other end of the traction rope is connected with a ring buckle on the fixed support, and a bionic organ, namely a heart valve, is arranged at the junction of the tail end of the bottom surface of the floating ball and the surface of the ball body to prevent concrete slurry from blocking the channel, so that the rising of the floating ball is influenced;
the fixed support comprises a tray and a bottom plate, a circular groove is formed in the middle of the tray, and the floating ball is placed in the circular groove, so that the floating ball is located inside the whole device in the installation and use processes of the liquid level device, and unnecessary damage caused by random running can be avoided.
In the device, the bottom plate is welded at the lower part of the tray, and the upper part of the bottom plate is provided with the buckle for fixing the traction rope.
In the device, the number of the first protective cover is 3, and the first protective cover is respectively welded on a fixed support tray to form a vertical groove-shaped track; the floating ball is arranged on the concrete slurry tank, and the floating ball is arranged on the concrete slurry tank; the tray is a square iron plate with a hollow middle part.
in the device, the shield is installed to effectively control the impact of concrete grout on the floating ball, so that the floating ball is prevented from being in strong collision with the wall of a drilling hole and a steel reinforcement cage due to overlarge swing amplitude in the rising process, and the stability and reliability of data of the detection system are ensured.
In the device, the upper hemisphere and the lower hemisphere are connected by adopting the adhesive to form a sphere.
In the device, the density of the floating ball material is less than that of concrete and greater than that of slurry of a floating layer, so that half of the floating ball is in the concrete slurry and the other half of the floating ball is in the slurry when the floating ball is close to a specified height, and the liquid level height is effectively controlled.
The invention also provides a use method of the floating ball liquid level device for measuring the concrete liquid level of the cast-in-place pile foundation, which comprises the following steps: the measuring instrument is arranged on the steel bar sleeve in a binding or welding mode, the floating ball is driven to rise along with the rise of the concrete liquid level in the pile, when the floating ball rises to a certain height, the traction rope can pull the spring, the spring is stressed to generate deformation, and the spring deformation instrument converts the monitored deformation into a radio signal through the sensor so as to transmit the radio signal to the ground surface control center.
the invention has the beneficial effects that:
(1) the invention utilizes the combined work of the mechanical unit and the electronic element to monitor the tiny deformation of the spring, and more accurately controls the liquid level height.
(2) The hollow part of the floating ball, the spring deformation measuring instrument and the sensor can be reused, so that the cost is effectively controlled;
(3) The floating ball can be selected to distinguish the concrete layer from the floating slurry layer, so that the liquid level of the concrete is effectively controlled, and excessive over-filling is avoided to cause a great deal of waste.
Drawings
FIG. 1 is a schematic view of a float of the device of the present invention;
FIG. 2 is a schematic perspective view of the apparatus of the present invention;
FIG. 3 is a schematic diagram showing the positional relationship between the spring deformer and the float ball according to the present invention.
In the figure: the device comprises a floating ball 1, a displacement sensor 2, a traction rope 3, a fixed support 4, a protective cover 5, a displacement measuring instrument 6, a spring 7, a buckle 8, a heart valve 9, a tray 10 and a bottom plate 11.
Detailed Description
the present invention is further illustrated by, but is not limited to, the following examples.
Example (b):
The embodiment provides a floating ball liquid level device for measuring the liquid level of cast-in-place pile foundation concrete, which comprises a floating ball 1, a measuring device, a displacement sensor 2, a traction rope 3, a fixed support 4 and a protective cover 5, wherein the measuring device comprises a spring deformer, and the spring deformer is positioned in the hollow part of the floating ball 1, so that the safety and the stability of a detection system are well protected; the displacement sensor 2 is positioned in the hollow part of the floating ball, and is also used for protecting the stable transmission of signals; the whole floating ball liquid level device is connected to the reinforcement cage in a welding or binding mode, so that the liquid level height of concrete can be controlled;
The floating ball 1 is a sphere, the upper hemisphere is a hollow part, the lower hemisphere is a solid part, the shield 5 is welded on the fixed support 4, and the floating ball 1 is connected with the fixed support 4 through the traction rope 3 and is arranged in the shield;
The spring deformation instrument comprises a spring 7 and a displacement measuring instrument 6, and the displacement measuring instrument 6 is positioned below the spring 7;
The spring deformer and the displacement sensor 2 are arranged in the hollow part of the floating ball 1, a thin channel is arranged in the middle of the solid part of the floating ball 1, one end of the traction rope 3 passes through the channel to be connected with the bottom of a spring 7 positioned in the hollow part of the floating ball, the other end of the traction rope is connected with a buckle 8 on the fixed support 4, and a bionic organ, namely a heart valve 9 is arranged at the junction of the tail end of the bottom surface of the floating ball and the surface of the ball body to prevent concrete slurry from blocking the channel, so that the rising of the floating ball is influenced and the;
the displacement sensor 2 is positioned below the spring 7;
Fixed bearing 4 include tray 10, bottom plate 11, tray 10 middle part is equipped with the circular recess, the floater is placed in this circular recess, makes level device inside the floater is located whole device in installation and use, can not run at will and bring unnecessary destruction.
In the device, the bottom plate 11 is welded at the lower part of the tray 10, and the upper part of the bottom plate 11 is provided with the buckle 8 for fixing the traction rope 3.
in the device, 3 shields 5 are respectively welded on a fixed support tray 10 to form a vertical groove-shaped track; the floating ball is arranged on the concrete slurry tank, and the floating ball is arranged on the concrete slurry tank; the tray is a square iron plate with a hollow middle part.
in the device, the mounting of the shield 5 effectively controls the impact of concrete grout on the floating ball, so that the floating ball is prevented from being in strong collision with the wall of a drilling hole and a steel reinforcement cage due to overlarge swing amplitude in the rising process, and the stability and reliability of data of the detection system are ensured.
In the device, the upper hemisphere and the lower hemisphere are connected by adopting the adhesive to form a sphere.
in the device, the density of the floating ball material is less than that of concrete and greater than that of slurry of a floating layer, so that half of the floating ball is in the concrete slurry and the other half of the floating ball is in the slurry when the floating ball is close to a specified height, and the liquid level height is effectively controlled.
The invention also provides a use method of the floating ball liquid level device for measuring the concrete liquid level of the cast-in-place pile foundation, which comprises the following steps: the measuring instrument is arranged on the steel bar sleeve in a binding or welding mode, the floating ball is driven to rise along with the rise of the concrete liquid level in the pile, when the floating ball rises to a certain height, the traction rope can pull the spring, the spring is stressed to generate deformation, and the spring deformation instrument converts the monitored deformation into a radio signal through the sensor so as to transmit the radio signal to the ground surface control center.
Claims (4)
1. The utility model provides a measurement bored concrete pile foundation concrete liquid level's floater liquid level device which characterized in that: the device comprises a floating ball, a measuring device, a displacement sensor, a traction rope, a fixed support and a protective cover, wherein the measuring device comprises a spring deformer which is positioned inside a hollow part of the floating ball; the displacement sensor is positioned in the hollow part of the floating ball; the whole floating ball liquid level device is connected to the reinforcement cage in a welding or binding mode, so that the liquid level height of concrete can be controlled;
The floating ball is a sphere, the upper hemisphere is a hollow part, the lower hemisphere is a solid part, the shield is welded on the fixed support, and the floating ball is connected with the fixed support through a traction rope and is arranged on the fixed support in the shield;
the spring deformation instrument comprises a spring and a displacement measuring instrument, and the displacement measuring instrument is positioned below the spring;
the spring deformation instrument and the displacement sensor are arranged at the hollow part of the floating ball, the middle part of the solid part of the floating ball is provided with a thin channel, one end of the traction rope passes through the channel to be connected with the bottom of the spring positioned at the hollow part of the floating ball, the other end of the traction rope is connected with a ring buckle on the fixed support, and a bionic organ, namely a heart valve, is arranged at the junction of the tail end of the bottom surface of the floating ball and the surface of the ball body to prevent concrete slurry from blocking the; the displacement sensor is positioned below the spring;
the fixed support comprises a tray and a bottom plate, wherein a circular groove is formed in the middle of the tray, and the floating ball is placed in the circular groove, so that the floating ball is positioned in the whole liquid level device in the installation and use processes of the liquid level device; the bottom plate is welded at the lower part of the tray, and the upper part of the bottom plate is provided with a buckle for fixing a traction rope;
the density of the floating ball material is less than that of concrete and greater than that of slurry of a floating layer.
2. The floating ball liquid level device for measuring the concrete liquid level of the cast-in-place pile foundation according to claim 1, characterized in that: the number of the first shield is 3, and the first shield is welded on the fixed support tray respectively to form a vertical groove-shaped track; the tray is a square iron plate with a hollow middle part.
3. The floating ball liquid level device for measuring the concrete liquid level of the cast-in-place pile foundation according to claim 1, characterized in that: the upper hemisphere and the lower hemisphere are connected by adopting an adhesive to form a sphere.
4. the use method of the floating ball liquid level device for measuring the concrete liquid level of the cast-in-place pile foundation according to any one of claims 1 to 3 is characterized by comprising the following steps:
The floating ball liquid level device is integrally connected to the steel reinforcement cage in a welding or binding mode, the floating ball is driven to ascend along with the ascending of the concrete liquid level in the pile, when the floating ball ascends to a certain height, the traction rope can pull the spring, the spring is stressed to deform, and the deformation monitored by the spring deformation instrument is converted into a radio signal through the sensor, so that the radio signal is transmitted to the ground surface control center.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810121457.6A CN108426624B (en) | 2018-02-07 | 2018-02-07 | Floating ball liquid level device for measuring concrete liquid level of cast-in-place pile foundation and using method thereof |
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| CN201810121457.6A CN108426624B (en) | 2018-02-07 | 2018-02-07 | Floating ball liquid level device for measuring concrete liquid level of cast-in-place pile foundation and using method thereof |
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| CN113532511B (en) * | 2021-06-01 | 2022-08-09 | 中铁一局集团建筑安装工程有限公司 | Deformation monitoring and early warning method for super-large-section high-formwork and large-volume concrete structure |
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| CN107165202A (en) * | 2017-03-31 | 2017-09-15 | 江苏中海昇物联科技有限公司 | Concrete casting monitors sensor |
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| CN104677465A (en) * | 2013-11-26 | 2015-06-03 | 卢梅芳 | Engine oil level monitoring alarming system |
| CN204330087U (en) * | 2015-01-13 | 2015-05-13 | 陈建新 | Spiral clockwork spring line draws fluid level measuring instrument |
| CN206725046U (en) * | 2017-05-09 | 2017-12-08 | 北京中水润德科技有限公司 | Elastic energy accumulation type float gauge |
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| CN107165202A (en) * | 2017-03-31 | 2017-09-15 | 江苏中海昇物联科技有限公司 | Concrete casting monitors sensor |
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