CN113235670B - Building engineering foundation pile detecting system - Google Patents

Building engineering foundation pile detecting system Download PDF

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Publication number
CN113235670B
CN113235670B CN202110457467.9A CN202110457467A CN113235670B CN 113235670 B CN113235670 B CN 113235670B CN 202110457467 A CN202110457467 A CN 202110457467A CN 113235670 B CN113235670 B CN 113235670B
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electromagnet
heavy hammer
foundation pile
fixedly arranged
weight
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CN113235670A (en
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刘山
吴静
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Guangdong Yingtong Detection Technology Consultation Service Co ltd
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Guangdong Yingtong Detection Technology Consultation Service Co ltd
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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

The invention belongs to the technical field of pile foundation detection equipment, and particularly relates to a detection system for a foundation pile of constructional engineering, which comprises a detection device; the detection device comprises a bottom plate; an electric push rod is fixedly arranged on the lower surface of the bottom plate; a through hole is formed in the middle of the bottom plate; a second screw rod is fixedly arranged on the bottom plate, and a top plate is fixedly arranged at the other end of the second screw rod; the top plate is fixedly provided with a mounting seat; a first screw is fixedly arranged in the mounting seat; the lower end of the first screw rod is fixedly provided with an electromagnet; after the electromagnet is electrified, the heavy hammer is adsorbed and fixed on the lower surface of the electromagnet through magnetic force; the invention has simple structure and convenient use, and when the heavy hammer falls and collides with the pile foundation, the heavy hammer and the pile foundation are coaxial, thereby improving the detection accuracy, accelerating the stabilizing speed of the heavy hammer after being lifted and shortening the waiting time.

Description

Building engineering foundation pile detecting system
Technical Field
The invention belongs to the technical field of pile foundation detection equipment, and particularly relates to a foundation pile detection system for constructional engineering.
Background
The pile foundation detection methods are many, and currently, a static load test, a core drilling method, a low strain method, a high strain method, a sound wave transmission method and the like are commonly used. The high strain method of the dynamic test of the pile foundation is a detection method for judging the vertical compression bearing capacity and the integrity of the pile body of a single pile. In order to ensure the quality of the detection data and avoid serious damage to the test pile, the weight should be ensured to impact the center of the pile top after falling. However, at present, the positioning of the heavy hammer and the pile foundation in the dynamic measurement and detection of the pile foundation by the high-strain method is estimated by manual visual observation, the heavy hammer is not stabilized by a clamping mechanism after being lifted, on one hand, the coaxiality of the heavy hammer and the pile foundation cannot be ensured, the detection accuracy is reduced, on the other hand, the lifted heavy hammer cannot be quickly stabilized, and the waiting time for the stability of the heavy hammer is prolonged.
Some technical solutions related to foundation pile detection also exist in the prior art, for example, chinese patent with application number CN201620237388.1 discloses a high-strain foundation pile detection guide device, which includes a heavy hammer, a base, a guide rail, and a bracket; the base is annular, the upper surface and the lower surface of the base are parallel to a horizontal plane, an upward bracket is arranged on the base, symmetrical guide rails are arranged on the bracket, and the guide rails move up and down; be equipped with on the weight with guide rail complex subassembly, make the weight only can follow the guide rail up-and-down motion, be equipped with the couple hole at the weight top, the weight makes the weight be located the center of base with the orthographic projection of base, equipment structure in this scheme is simple, high durability and convenient use, but can guarantee in the use that the orthographic projection of weight on the base is located the center of base, but the device is built behind the foundation pile top, the center that can't guarantee the base coincides with the center of foundation pile mutually, consequently the weight still has the inclined to one side possibility of falling when experimental, additionally, the weight that can't make the lifting after the weight lifting in the device is fast stable, the stable latency of weight has been increased, extravagant measurement personnel's time.
Disclosure of Invention
In order to make up for the defects of the prior art, improve the speed and accuracy of positioning of a heavy hammer and a pile foundation in the current high-strain-method pile foundation dynamic test detection, ensure that the heavy hammer and the pile foundation are coaxial in the falling process and when the heavy hammer collides with the pile foundation, improve the detection accuracy, accelerate the stabilizing speed of the heavy hammer after being lifted and shorten the waiting time, the invention provides a foundation pile detection system for the building engineering.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a detection system for a foundation pile of constructional engineering, which comprises a detection device; the detection device comprises a bottom plate; an electric push rod is fixedly arranged on the lower surface of the bottom plate; an extension rod on the electric push rod extends downwards and contacts the ground; a through hole is formed in the middle of the bottom plate; a second screw is fixedly arranged on the upper surface of the bottom plate; a top plate is fixedly arranged at one end of the second screw rod, which is far away from the bottom plate; a mounting seat is fixedly arranged in the middle of the upper surface of the top plate; a first screw rod is fixedly arranged in the mounting seat through threads; the lower end of the first screw penetrates through the top plate and is positioned below the lower surface of the top plate; an electromagnet is fixedly arranged at the lower end of the first screw rod; the electromagnet is circular, and the center line of the electromagnet is superposed with the center line of the through hole; after the electromagnet is electrified, the heavy hammer is adsorbed and fixed on the lower surface of the electromagnet through magnetic force; after the heavy hammer is fixed on the electromagnet, the center line of the heavy hammer and the center line of the through hole are overlapped;
during operation, in the process of detection, a worker sleeves the detection device on a foundation pile to be detected and enables the upper end face of the foundation pile to penetrate out of the through hole, then controls the electric push rod to enable the extension rod on the electric push rod to extend downwards or retract, levels the detection device, ensures that when detection is carried out, the upper surface of a bottom plate of the detection device and the upper surface of the foundation pile are parallel to each other, the central line of the through hole and the central line of the foundation pile coincide with each other, then fixes a sensor for detecting data to a proper position on the foundation pile, simultaneously lifts the counter weight and synchronously starts the electromagnet after the worker finishes the installation of the detection device, so that the counter weight is adsorbed by the electromagnet, and simultaneously adjusts the position of the counter weight before the worker adsorbs the electromagnet to enable the central line of the counter weight and the central line of the electromagnet to coincide with each other, meanwhile, after the heavy hammer is adsorbed on the electromagnet and irrelevant personnel near the detection device are cleared away, a worker controls the electromagnet to be closed, so that the electromagnet loses magnetic force and does not have magnetic attraction to the heavy hammer, the heavy hammer does free falling motion in the air under the action of gravity and collides with the upper surface of the foundation pile to complete the detection of the foundation pile, meanwhile, in the using process, the electromagnet is used for fixing the heavy hammer after being lifted, then, the power supply of the electromagnet is disconnected, the heavy hammer vertically falls under the action of gravity and collides with the foundation pile, the heavy hammer can be prevented from being fixed by a traction rope, the heavy hammer is easily influenced by the traction rope in the falling process, the heavy hammer collides with the end surface of the foundation pile, the center line of the heavy hammer and the center line of the foundation pile deviate from each other, the detection result of the foundation pile is interfered, and simultaneously, in the using process, make the weight under the action of gravity, free fall strikes the foundation pile, when can avoiding using the haulage rope, there is frictional force to the influence of weight between the motion part in haulage rope and the detection device, when reducing the weight striking foundation pile, the interference source of existence, improve the accuracy to foundation pile detection data, and simultaneously, in the use, use the electro-magnet to fix after the weight lifting, can guarantee that the weight directly enters into relative quiescent condition after contacting the electro-magnet, use the haulage rope to fix the weight in avoiding traditional detection device, the weight is after the lifting is accomplished, still there is longer a period of time in the oscillation state, need staff's wait for behind the weight "calm", just can begin to release the weight, detect the foundation pile, waste time.
Preferably, the second screw rod is fixedly provided with a lifting seat through threads; a mounting hole is formed in the lifting seat; an insertion rod is slidably mounted in the mounting hole; a spring is fixedly arranged on the bottom surface of the mounting hole; the other end of the spring is fixedly connected to the end face of the insertion rod in the mounting hole; a transverse plate is fixedly arranged at one end of the insertion rod outside the mounting hole; a connecting line between the lifting seat and the transverse plate is overlapped with the radial direction of the through hole;
a protective cover is fixedly arranged on the upper surface of the bottom plate, and the lower end of the screw rod II is positioned in the inner space of the protective cover; a motor is fixedly arranged on the lower surface of the bottom plate; an output shaft of the motor penetrates through the bottom plate and enters the inner space of the protective cover; the second screw rod and the output shaft of the motor are mutually connected through a synchronous belt and transmit power;
a stop block is slidably arranged on the lifting seat and penetrates through the lifting seat; a first gap is formed in the insertion rod; a second notch is formed in the stop block; the upper end of the stop block is fixedly provided with an upper plate, and the area of the upper plate is larger than the cross section area of the stop block; the lower end of the stop block is fixedly provided with a lower plate, and the area of the lower plate is larger than the cross section area of the stop block; the weight of the lower plate is obviously greater than that of the upper plate; after the insertion rod extends out of the mounting hole, the stop block is embedded into the first notch on the insertion rod, and the second notch on the stop block is positioned below the first notch; after the insertion rod extends out of the mounting hole, the heavy punch is lifted by the transverse plate;
when the lifting device works, when a worker levels the detection device, the upper surface of the bottom plate and the end surface of the foundation pile are parallel to each other, then the worker manually pulls out the transverse plate on the lifting seat and inserts the transverse plate below the heavy hammer, meanwhile, the worker slightly adjusts the position of the heavy hammer to ensure that the central line of the heavy hammer and the central line of the electromagnet coincide with each other, simultaneously, before the transverse plate on the lifting seat is pulled out, the insertion rod is positioned in the mounting hole and positioned in the notch II on the stop block, the stop block is in a lifting state relative to the lifting seat, then, in the process that the transverse plate is pulled out, the insertion rod passes through the notch II, when the notch I on the insertion rod passes through the stop block, the transverse plate is completely pulled out, and the stop block is not stopped by the insertion rod, so that the stop block descends from a group of notches relative to the lifting seat to ensure that the stop block is inserted into the notch I, the relative position of the insertion rod is fixed, and the transverse plate after being pulled out is prevented from returning to the original position again under the action of the spring; meanwhile, in the using process, after the worker finishes the position adjustment of the heavy punch on the transverse plate, the worker starts the motor, the output shaft of the motor drives the synchronous belt to rotate, then the synchronous belt drives the screw rod II to rotate, the lifting seat is installed on the screw rod II through threads, therefore, after the motor is started, the lifting seat begins to gradually rise, so that the heavy punch is lifted upwards, meanwhile, after the heavy punch is close to the electromagnet, the worker starts the electromagnet, the heavy punch is fixed through the electromagnet, meanwhile, when the electromagnet fixes the heavy punch, the magnetic force of the electromagnet acts on the stop block, so that the stop block moves upwards relative to the lifting seat under the action of the magnetic force, when the notch II on the stop block reaches the insertion rod, the insertion rod passes through the notch II under the action of the spring and returns to the installation hole again, so as to drive the transverse plate to retract to the initial position, the counter weight is not blocked any more, and after the counter weight is released by a follow-up electromagnet, the counter weight can directly fall freely and impact on impact, so that the phenomenon that the falling track of the counter weight is deviated due to the fact that the counter weight is interfered by a transverse plate which is not retracted and the detection result of the foundation pile is influenced because the counter weight cannot impact the central position on the end face of the foundation pile is avoided.
Preferably, the weight is made of a soft magnetic material, such as soft magnetic ferrite; the outer sides of the rest parts except the heavy punch and the electromagnet in the detection device are wrapped with a magnetic shielding layer;
when the electric power failure occurs to the electromagnet and the heavy hammer is released, the heavy hammer cannot be rapidly released due to the influence of the magnetic field generated by the heavy hammer, the falling track of the heavy hammer is influenced, and the heavy hammer cannot impact the central position on the end face of the foundation pile; meanwhile, the magnetic shielding layer is wrapped on the rest parts except the heavy hammer and the electromagnet in the detection device, the detection device can be prevented from being used for a long time, the part in the detection device is magnetized by the electromagnet, the normal work of the detection device is influenced, meanwhile, a magnetic field is prevented from being formed after the part in the detection device is magnetized, in the falling process of the heavy hammer, the magnetism of the part in the detection device interferes with the heavy hammer, the falling track of the heavy hammer is inclined, the deviation occurs between the impact point of the heavy hammer and the central point on the end face of the foundation pile, even the edge of the foundation pile is hit under the influence of the magnetic force, the foundation pile is damaged or the heavy hammer directly falls onto the bottom plate of the detection device, the detection device is damaged, and the normal use of the detection device is influenced.
Preferably, a layer of titanium alloy net is embedded in the heavy hammer; the titanium alloy mesh is used as a skeleton attached powder raw material in the process of preparing the heavy hammer in a powder metallurgy mode, a blank is obtained by pressing, and then sintering is carried out to obtain a finished heavy hammer; the melting point of the titanium alloy net is higher than that of the soft magnetic material for preparing the heavy punch; after the heavy hammer is prepared, a protective layer is wrapped on the outer surface of the heavy hammer;
during operation, because the weight needs frequent striking the terminal surface of foundation pile, in addition, the soft magnetic material of preparation weight is cracked easily, therefore, in the in-process of preparing the weight, imbed the titanium alloy net in the body of preparation before powder metallurgy, later, directly sinter, thereby make the finished product weight that obtains embed the titanium alloy net in, reinforce the weight structure, reduce the weight and appear cracked possibility in the used repeatedly, prolong the life of weight, reduce use cost, simultaneously, wrap up a layer of inoxidizing coating on the surface of weight, can avoid the weight in the process of preserving and striking the use, the edge of weight is cracked, drop, influence the normal use of weight, thereby prolong the life of weight.
Preferably, the lower surface of the electromagnet is provided with a groove, and the groove is arc-shaped; the central line of the electromagnet and the central line of the groove are overlapped; a bulge is fixedly arranged on the upper surface of the heavy hammer and is in an arc shape; the center line of the heavy hammer and the center line of the bulge are mutually overlapped; the protrusion on the heavy hammer is just inserted into the groove on the electromagnet;
when in use, after the heavy hammer is adsorbed on the electromagnet, because the electromagnet is provided with the groove, the heavy hammer is provided with the bulge, and the bulge and the groove can be matched with each other, the bulge and the groove are mutually embedded after the heavy hammer is adsorbed and fixed on the electromagnet, so that the central lines of the bulge and the groove are mutually overlapped, thereby ensuring that the central lines of the heavy hammer fixed on the electromagnet and the electromagnet are mutually overlapped, meanwhile, because a worker regulates the detection device when installing the detection device, so that the central line of the through hole on the detection device and the central line of the foundation pile are mutually overlapped, after the bulge on the heavy hammer is matched with the groove on the electromagnet, the central line of the through hole fixed on the electromagnet and the central line of the foundation pile are mutually overlapped, thereby avoiding the use of a conventional detection device, after the heavy hammer is lifted, the central line of the heavy hammer cannot be well overlapped with the central line of the foundation pile, so that when the heavy hammer falls and impacts on the end face of the foundation pile, the impact point of the heavy hammer is the central point on the end face of the foundation pile, and the detection result of the foundation pile is influenced.
Preferably, micro balls are uniformly arranged on the surface of the groove; the ball is free to rotate on the surface of the groove; after the protrusion is inserted into the groove, the surface of the protrusion is contacted with the ball on the surface of the groove;
in operation, in-process on the electro-magnet is adsorbed to the weight, ball through recess surface mounting, when making there is the deviation between arch and the recess, the arch can take place to remove in the recess, finally make bellied central line and the central line of recess coincide each other, guarantee to coincide each other between the central line of weight and the central line of foundation pile, when avoiding the recess surface not to install the ball, when having the deviation between arch and the recess, the weight receives the strong magnetic attraction of electro-magnet, the direct card of arch in the recess, can not take place to remove, make the central line of arch and recess not coincide, and then make the central point on the central line skew foundation pile terminal surface of weight, influence the weight whereabouts and strike behind the foundation pile, to the testing result of foundation pile.
Preferably, a fixed cavity is formed in the lower surface of the electromagnet, and an opening of the fixed cavity is downward; the central line of the fixed cavity and the central line of the electromagnet are overlapped; a transparent baffle is fixedly arranged in the fixed cavity; the transparent baffle is positioned in the fixed cavity and close to the outlet; the bottom surface of the fixed cavity is fixedly provided with a laser lamp, and a gap is formed between the laser lamp and the transparent baffle;
the upper surface of the heavy hammer is provided with a through hole; the center line of the through hole and the center line of the heavy hammer are overlapped; after the heavy hammer is fixed on the lower surface of the electromagnet, light emitted by the laser lamp penetrates through the through hole and irradiates the central point of the upper end surface of the foundation pile;
when the pile foundation pile detection device works, in the using process, before every detection, a worker turns on a laser lamp on an electromagnet, the position of light emitted by the laser lamp on the end face of a foundation pile is determined to be correct, whether the position of the detection device is correct or not is avoided, the situation that the detection result of the foundation pile is influenced cannot be timely found after the position of the detection device is deviated in the repeated detection process is avoided, meanwhile, in the detection process, after a heavy hammer is adsorbed on the electromagnet, when the center line of the heavy hammer, the center line of the electromagnet and the center line of the foundation pile coincide with each other, the light emitted by the laser lamp on the electromagnet irradiates the center position of the end face of the foundation pile, after the heavy hammer is lifted, the center line of the heavy hammer and the center line of the foundation pile coincide with each other, meanwhile, in the using process, when an accident situation occurs, the deviation occurs between the center line of the heavy hammer and the center line of the electromagnet, the light emitted by the laser lamp on the electromagnet cannot irradiate the end face of the foundation pile, therefore, the worker can find the data in time, and the influence on the detection result caused by the overlarge deviation in the detection process is avoided.
Preferably, a horizontal block is fixedly arranged on the upper surface of the bottom plate; the number of the horizontal blocks is four, and the horizontal blocks are uniformly distributed around the central line of the through hole; the horizontal block is prepared from transparent toughened glass and is a cuboid with a square cross section; a cavity is formed in the middle of the horizontal block; two ends of the horizontal block are respectively and fixedly provided with a first contact and a second contact; the first contact and the second contact enter the cavity; the first contact and the second contact are not in contact with each other; a sealing ring is fixedly arranged between the first contact and the horizontal block; a sealing ring is fixedly arranged between the second contact and the horizontal block; the cavity is filled with mercury beads, and when the horizontal block is in a horizontal state, the first contact is communicated with the second contact through the mercury beads; horizontal blocks on the bottom plate are mutually connected in series, and the motor and the electromagnet cannot be started before the series circuit is conducted;
when the detection device works, in the installation and debugging processes of the detection device, when the upper surface of a bottom plate in the detection device is not parallel to the horizontal plane, the first contact and the second contact are not conducted in the horizontal blocks installed on the bottom plate, so that a circuit formed by the horizontal blocks connected in series is in an open circuit state, the detection device cannot be normally used, the detection device is ensured to be correctly installed, the situation that detection personnel are lazy under partial extreme conditions and begin to be used' before the installation and debugging of the detection device are completely finished is avoided, the reliability of a detection result of a foundation pile is low or the detection result has larger errors, meanwhile, after the detection device is normally installed and the bottom plate is in the horizontal state, a mercury bead in the horizontal block installed on the bottom plate rolls to the middle position of a cavity, the first contact and the second contact are conducted, and the circuit formed by the horizontal blocks connected in series is kept smooth, the detection device can be normally used, and the accuracy and the reliability of the detection device on the foundation pile detection result are improved.
Preferably, the sleeve is sleeved on the outer side of the second screw rod, and the sleeve and the second screw rod are not contacted with each other; the upper end of the sleeve is fixedly connected to the lower surface of the top plate; the lower end of the sleeve is fixedly connected to the upper surface of the protective cover; a through groove is formed in the side surface of the sleeve; the lifting seat on the second screw rod penetrates through the passing groove; the opening of the through groove faces to the direction far away from the through hole;
the during operation, in the use, protect screw rod two through the sleeve, reduce the quantity of the impurity of adhesion on screw rod two in the detection device use, guarantee screw rod two and can normal use, can not drive the lift seat decline or the in-process that rises and appear blocking and pausing, simultaneously, avoid in the testing process, after the weight strikes the terminal surface of foundation pile, receive the weight striking and appear the pebble that splashes and strike screw rod two, cause the screw thread on the screw rod two impaired, influence the normal use of screw rod two and the life of screw rod two.
Preferably, a handle is fixedly mounted at the upper end of the first screw rod and is positioned above the top plate; when the handle is acted by external force, the screw rod rotates; scales are arranged on the surface of the sleeve;
during operation, use detection device to examine time measuring to the foundation pile, along with the difference of near foundation pile ground state, the relative detection device's of foundation pile height is the same different, drives screw rod one through the handle and rotates, and then makes the high rising or the decline of electro-magnet, and the detection device of being convenient for adapts to the foundation pile of co-altitude not, avoids the highly fixed of the relative bottom plate whereabouts of weight, examines time measuring to the foundation pile of difference, has too big error, influences the accuracy of testing result.
Preferably, the lower end of the heavy hammer is provided with a step groove; when the weight is lifted by the transverse plate, the transverse plate is inserted into the step groove; anti-slip grooves are uniformly formed in the upper surface of the transverse plate; anti-slip grooves are uniformly formed in the side face, in contact with the transverse plate, in the step groove;
the during operation, through seting up the step groove on the weight, the below that the weight was inserted to the diaphragm of can being convenient for, thereby the convenience is with the weight lifting, avoid the diaphragm to be difficult to between the terminal surface of disect insertion weight and foundation pile, influence the lifting to the weight, and simultaneously, in the use, set up the antiskid groove on the diaphragm and in the step groove with the side of diaphragm contact, can make the contact between diaphragm and the weight more stable, prevent that the weight landing from appearing in the lifting in-process, cause personnel to be injured or damage detection device.
The invention has the following beneficial effects:
1. according to the foundation pile detection system for the building engineering, due to the arrangement of the electromagnet and the heavy hammer, when the detection device is used for detecting the foundation pile, the heavy hammer in the detection device can be fixed through the electromagnet after being lifted, so that the heavy hammer is prevented from vibrating after being lifted, the time spent on waiting for the heavy hammer to be static in the detection process is eliminated, and the working efficiency of detection personnel is improved.
2. According to the foundation pile detection system for the building engineering, the grooves, the protrusions and the balls on the surfaces of the grooves are arranged, the grooves and the protrusions are matched with each other, the center lines of the heavy hammer and the electromagnet are overlapped with each other after the heavy hammer is adsorbed and fixed to the electromagnet, in addition, in the debugging process of the detection device, the electromagnet is perpendicular to the center line of the foundation pile, the fact that the center lines of the heavy hammer and the foundation pile are overlapped with each other is guaranteed, and therefore accuracy of detection results of the foundation pile is improved.
3. According to the foundation pile detection system for the building engineering, the fixed cavity, the laser lamp and the through hole are arranged, when the central lines of the electromagnet, the heavy hammer and the foundation pile are mutually overlapped in the detection process, a detector can see light rays emitted by the laser lamp on the end face of the foundation pile, so that the mutual overlapping of the central line of the heavy hammer and the central line of the foundation pile is determined, the detection accuracy is improved, meanwhile, the situation that the heavy hammer and the central line of the foundation pile deviate can be found in time in the detection process, data with large errors are removed in advance, and the accuracy of the foundation pile detection is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic view of the structure of the detecting unit of the present invention;
FIG. 2 is a schematic diagram of the structure of the weight and the electromagnet in the detecting device of the present invention;
FIG. 3 is a schematic view of the structure of a horizontal block in the detecting unit of the present invention;
FIG. 4 is a schematic view of the lifting seat of the detecting device of the present invention;
FIG. 5 is a schematic structural view of a cross plate and a stop block in the detecting device of the present invention;
in the figure: the device comprises a bottom plate 1, an electric push rod 11, an extension rod 12, a through hole 13, a top plate 2, a mounting seat 21, a first screw 22, an electromagnet 23, a groove 231, a transparent baffle 232, a laser lamp 233, a handle 24, a heavy hammer 3, a protrusion 31, a through hole 32, a protective layer 33, a step groove 34, a motor 4, an output shaft 41, a synchronous belt 42, a protective cover 43, a second screw 44, a sleeve 441, a lifting seat 5, a transverse plate 51, an insertion rod 511, a stop block 512, a spring 513, an upper plate 514, a lower plate 515, a first notch 516, a second notch 517, a horizontal block 6, a first contact 61, a second contact 62, a mercury bead 63, a cavity 64, a sealing ring 65 and a base pile 7.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 5, the construction engineering foundation pile detection system of the present invention includes a detection device; the detection device comprises a bottom plate 1; an electric push rod 11 is fixedly arranged on the lower surface of the bottom plate 1; an extension rod 12 on the electric push rod 11 extends downwards and contacts the ground; a through hole 13 is formed in the middle of the bottom plate 1; a second screw 44 is fixedly arranged on the upper surface of the bottom plate 1; a top plate 2 is fixedly arranged at one end of the second screw 44 far away from the bottom plate 1; a mounting seat 21 is fixedly arranged in the middle of the upper surface of the top plate 2; a first screw 22 is fixedly arranged in the mounting seat 21 through threads; the lower end of the first screw 22 penetrates through the top plate 2 and is positioned below the lower surface of the top plate 2; an electromagnet 23 is fixedly arranged at the lower end of the first screw rod 22; the electromagnet 23 is circular, and the central line of the electromagnet 23 is overlapped with the central line of the through hole 13; after the electromagnet 23 is electrified, the heavy hammer 3 is adsorbed and fixed on the lower surface of the electromagnet 23 through magnetic force; after the weight 3 is fixed on the electromagnet 23, the center line of the weight 3 and the center line of the through hole 13 coincide with each other;
during working, in the process of detection, a worker sleeves the detection device on a foundation pile to be detected and enables the upper end face of the foundation pile to penetrate out of the through hole 13, then controls the electric push rod 11 to enable the extension rod 12 on the electric push rod 11 to extend downwards or retract, levels the detection device, ensures that the detection is carried out, the upper surface of the bottom plate 1 of the detection device and the upper surface of the foundation pile are parallel to each other, the central line of the through hole 13 and the central line of the foundation pile coincide with each other, then fixes a sensor for detecting data to a proper position on the foundation pile, simultaneously lifts the heavy hammer 3 and synchronously starts the electromagnet 23 after the worker completes the installation of the detection device, so that the heavy hammer 3 is adsorbed by the electromagnet 23, and simultaneously adjusts the position of the heavy hammer 3 before the worker adsorbs the heavy hammer 3 onto the electromagnet 23, the central line of the weight 3 and the central line of the electromagnet 23 are coincided with each other, meanwhile, after the weight 3 is adsorbed on the electromagnet 23 and irrelevant people near the clearing and retreating detection device, the staff controls the electromagnet 23 to be closed, the electromagnet 23 loses magnetic force, the magnetic attraction force does not exist on the weight 3, the weight 3 is further enabled to do free falling body movement in the air under the action of gravity and impact on the upper surface of the foundation pile, the detection of the foundation pile is completed, meanwhile, in the using process, the electromagnet 23 is used for lifting and fixing the weight 3, then, the power supply of the electromagnet 23 is cut off, the weight 3 vertically falls and impacts on the foundation pile under the action of gravity, the weight 3 can be prevented from being fixed by a traction rope, the weight 3 is easily influenced by the traction rope in the falling process, the weight 3 impacts on the end surface of the foundation pile, the central line of the weight 3 and the central line of the foundation pile deviate from each other, the detection result of the foundation pile is interfered, meanwhile, in the use process, the heavy hammer 3 freely falls and impacts the foundation pile under the action of gravity, the influence of friction force between the traction rope and a moving part in the detection device on the heavy hammer 3 can be avoided when the traction rope is used, the interference source existing when the heavy hammer 3 impacts the foundation pile is reduced, the accuracy of the detection data of the foundation pile is improved, meanwhile, in the use process, the electromagnet 23 is used for fixing after the heavy hammer 3 is lifted, the heavy hammer 3 can be ensured to directly enter a relatively static state after contacting the electromagnet 23, the situation that after the heavy hammer 3 is fixed by the traction rope in the traditional detection device, the heavy hammer 3 is still in a vibration state for a long time after the lifting is finished, a worker can start to release the heavy hammer 3 to detect the foundation pile only after waiting for 3 'calmness' is avoided, time is wasted.
As an embodiment of the invention, the second screw 44 is fixedly provided with a lifting seat 5 through threads; a mounting hole is formed in the lifting seat 5; an insertion rod 511 is slidably mounted in the mounting hole; a spring 513 is fixedly arranged on the bottom surface of the mounting hole; the other end of the spring 513 is fixedly connected to the end face of the insertion rod 511 positioned in the mounting hole; a transverse plate 51 is fixedly arranged at one end of the insertion rod 511 positioned outside the mounting hole; the connecting line between the lifting seat 5 and the transverse plate 51 is overlapped with the radial direction of the through hole 13;
a protective cover 43 is fixedly arranged on the upper surface of the bottom plate 1, and the lower end of the second screw 44 is positioned in the inner space of the protective cover 43; a motor 4 is fixedly arranged on the lower surface of the bottom plate 1; the output shaft 41 of the motor 4 penetrates through the bottom plate 1 and enters the inner space of the protective cover 43; the second screw 44 is connected with the output shaft 41 of the motor 4 through a synchronous belt 42 and transmits power;
a stop block 512 is slidably mounted on the lifting seat 5, and the stop block 512 penetrates through the lifting seat 5; the inserting rod 511 is provided with a first notch 516; a second notch 517 is formed in the stop block 512; an upper plate 514 is fixedly arranged at the upper end of the stop block 512, and the area of the upper plate 514 is larger than the cross-sectional area of the stop block 512; a lower plate 515 is fixedly installed at the lower end of the stop block 512, and the area of the lower plate 515 is larger than the cross-sectional area of the stop block 512; the weight of the lower plate 515 is significantly greater than the weight of the upper plate 514; after the insertion rod 511 extends out of the mounting hole, the stop block 512 is embedded into the first notch 516 on the insertion rod 511, and the second notch 517 on the stop block 512 is positioned below the first notch 516; after the insertion rod 511 extends out of the mounting hole, the weight 3 is lifted by the transverse plate 51;
during operation, in the using process, after the worker levels the detection device, the upper surface of the bottom plate 1 and the end surface of the foundation pile are parallel to each other, then the worker manually pulls out the transverse plate 51 on the lifting seat 5, inserts the transverse plate 51 below the weight 3, simultaneously slightly adjusts the position of the weight 3 to ensure that the center line of the weight 3 and the center line of the electromagnet 23 are coincident with each other, before the transverse plate 51 on the lifting seat 5 is pulled out, the insertion rod 511 is positioned in the mounting hole, the insertion rod 511 is positioned in the second notch 517 on the stop block 512, the stop block 512 is in a lifting state relative to the lifting seat 5, then, in the process that the transverse plate 51 is pulled out, the insertion rod 511 passes through the second notch 517, when the first notch 516 on the insertion rod 511 passes through the stop block 512, the transverse plate 51 is completely pulled out, and the stop block 512 is not stopped by the insertion rod 511 any more, so that the stop block 512 descends from the first notch 516 group relative to the lifting seat 5, the stop block 512 is inserted into the first notch 516, the relative position of the insertion rod 511 is fixed, and the transverse plate 51 which is pulled out is prevented from returning to the original position again under the action of the spring 513; meanwhile, in the using process, after the worker finishes the position adjustment of the weight 3 on the transverse plate 51, the worker turns on the motor 4, the output shaft 41 of the motor 4 drives the synchronous belt 42 to rotate, then the synchronous belt 42 drives the second screw 44 to rotate, because the lifting seat 5 is installed on the second screw 44 through threads, after the motor 4 is started, the lifting seat 5 starts to gradually rise, so as to lift the weight 3 upwards, meanwhile, after the weight 3 approaches the electromagnet 23, the worker starts the electromagnet 23, fixes the weight 3 through the electromagnet 23, meanwhile, when the electromagnet 23 fixes the weight 3, the magnetic force of the electromagnet 23 acts on the stop block 512, so that the stop block 512 moves upwards relative to the lifting seat 5 under the action of the magnetic force, when the notch 517 on the stop block 512 reaches the position of the insertion rod 511, under the action of the spring 513, the insertion rod 511 penetrates through the second notch 517 and returns to the mounting hole again to drive the transverse plate 51 to retract to the initial position, so that the blocking effect on the heavy hammer 3 is avoided, after the subsequent electromagnet 23 releases the heavy hammer 3, the heavy hammer 3 can directly and freely fall to impact on the impact, and the phenomenon that the transverse plate 51 which is not retracted interferes with the falling of the heavy hammer 3 to cause the falling track of the heavy hammer 3 to deviate is avoided, and the heavy hammer 3 cannot impact the central position on the end face of the foundation pile to influence the detection result of the foundation pile.
As an embodiment of the present invention, the weight 3 is made of a soft magnetic material, such as soft magnetic ferrite; the outer sides of the rest parts except the heavy hammer 3 and the electromagnet 23 in the detection device are wrapped with a magnetic shielding layer;
when the electric hammer is in work, the heavy hammer 3 is made of soft magnetic materials, the phenomenon that the heavy hammer 3 forms a magnetic field after the heavy hammer 3 is adsorbed by the electromagnet 23 can be avoided, and when the electromagnet 23 is powered off and the heavy hammer 3 is released, the heavy hammer 3 cannot be rapidly released due to the influence of the magnetic field generated by the heavy hammer 3, the falling track of the heavy hammer 3 is influenced, and the heavy hammer 3 cannot impact the center position on the end face of the foundation pile; meanwhile, the residual parts except the heavy hammer 3 and the electromagnet 23 in the detection device are wrapped by the magnetic shielding layer, so that the situation that the detection device is used for a long time can be avoided, the electromagnet 23 magnetizes the parts in the detection device, the normal work of the detection device is influenced, meanwhile, a magnetic field is formed after the parts in the detection device are magnetized, in the falling process of the heavy hammer 3, the magnetism of the parts in the detection device interferes with the heavy hammer 3, the falling track of the heavy hammer 3 is inclined, the deviation is caused between the impact point of the heavy hammer 3 and the central point on the end face of the foundation pile, even the heavy hammer 3 is influenced by magnetic force, the heavy hammer falls on the edge of the foundation pile, the foundation pile is damaged, or the heavy hammer 3 directly falls on the bottom plate 1 of the detection device, the detection device is damaged, and the normal use of the detection device is influenced.
As an embodiment of the present invention, a layer of titanium alloy mesh is embedded inside the weight 3; the titanium alloy mesh is used as a skeleton attached powder raw material in the process of preparing the heavy hammer 3 in a powder metallurgy mode, a blank is obtained by pressing, and then sintering is carried out to obtain the finished heavy hammer 3; the melting point of the titanium alloy net is higher than that of the soft magnetic material for preparing the heavy hammer 3; after the weight 3 is prepared, a protective layer 33 is coated on the outer surface of the weight 3;
in the working process, the heavy hammer 3 needs to frequently impact the end face of a foundation pile, and in addition, a soft magnetic material for preparing the heavy hammer 3 is easy to crack, so that in the process of preparing the heavy hammer 3, a titanium alloy net is embedded into a blank prepared before powder metallurgy, and then sintering is directly carried out, so that the titanium alloy net is embedded in the obtained finished heavy hammer 3, the structure of the heavy hammer 3 is reinforced, the possibility of cracking of the heavy hammer 3 in the repeated use process is reduced, the service life of the heavy hammer 3 is prolonged, the use cost is reduced, meanwhile, a protective layer 33 is wrapped on the outer surface of the heavy hammer 3, the situation that the corners of the heavy hammer 3 are cracked and dropped to influence the normal use of the heavy hammer 3 in the storage and impact use processes of the heavy hammer 3 can be avoided, and the service life of the heavy hammer 3 is prolonged.
As an embodiment of the present invention, a groove 231 is formed on the lower surface of the electromagnet 23, and the groove 231 is arc-shaped; the central line of the electromagnet 23 and the central line of the groove 231 are overlapped; a bulge 31 is fixedly arranged on the upper surface of the heavy hammer 3, and the bulge 31 is arc-shaped; the center line of the weight 3 and the center line of the protrusion 31 are coincident with each other; the protrusion 31 of the weight 3 is just inserted into the groove 231 of the electromagnet 23;
in operation, in the using process, after the weight 3 is adsorbed on the electromagnet 23, since the electromagnet 23 is provided with the groove 231, the protrusion 31 is installed on the weight 3, and the protrusion 31 and the groove 231 can be matched with each other, after the weight 3 is adsorbed and fixed on the electromagnet 23, the protrusion 31 and the groove 231 are mutually embedded, so that the center lines of the protrusion 31 and the groove 231 are mutually overlapped, thereby ensuring that the center lines of the weight 3 fixed on the electromagnet 23 and the electromagnet 23 are mutually overlapped, meanwhile, since the worker adjusts the detection device when installing the detection device, so that the center line of the through hole 13 on the detection device and the center line of the foundation pile are mutually overlapped, after the protrusion 31 on the weight 3 is matched with the groove 231 on the electromagnet 23, the center line of the weight 3 fixed on the electromagnet 23 and the center line of the foundation pile are mutually overlapped, therefore, the conventional detection device is avoided, after the heavy hammer 3 is lifted, the central line of the heavy hammer 3 cannot be well overlapped with the central line of the foundation pile, when the heavy hammer 3 falls and impacts the end face of the foundation pile, the impact point of the heavy hammer 3 is the central point on the end face of the foundation pile, and the detection result of the foundation pile is influenced.
As an embodiment of the present invention, micro balls are uniformly mounted on the surface of the groove 231; the balls are free to rotate on the surface of the groove 231; after the protrusion 31 is inserted into the groove 231, the surface of the protrusion 31 and the ball on the surface of the groove 231 are in contact with each other;
in the working process, in the process that the weight 3 is adsorbed on the electromagnet 23, the ball arranged on the surface of the groove 231 enables the protrusion 31 and the groove 231 to be deviated, the protrusion 31 can move in the groove 231, finally, the center line of the protrusion 31 and the center line of the groove 231 are mutually overlapped, the mutual overlapping between the center line of the weight 3 and the center line of the foundation pile is ensured, the situation that when the ball is not arranged on the surface of the groove 231 and the deviation exists between the protrusion 31 and the groove 231 is avoided, the weight 3 is attracted by the strong magnetic force of the electromagnet 23, the protrusion 31 is directly clamped in the groove 231 and cannot move, the center line of the protrusion 31 and the center line of the groove 231 are not overlapped, the center line of the weight 3 deviates from the center point on the end face of the foundation pile, and the detection result of the foundation pile is detected after the weight 3 falls and impacts the foundation pile.
As an embodiment of the present invention, a fixing cavity is formed on the lower surface of the electromagnet 23, and an opening of the fixing cavity is downward; the central line of the fixed cavity and the central line of the electromagnet 23 are overlapped; a transparent baffle 232 is fixedly arranged in the fixed cavity; the transparent baffle 232 is positioned in the fixed cavity at a position close to the outlet; the bottom surface of the fixed cavity is fixedly provided with a laser lamp 233, and a gap is formed between the laser lamp 233 and the transparent baffle 232;
the upper surface of the weight 3 is provided with a through hole 32; the central line of the through hole 32 and the central line of the weight 3 are coincident with each other; after the weight 3 is fixed on the lower surface of the electromagnet 23, the light emitted by the laser lamp 233 passes through the through hole 32 and irradiates the central point of the upper end surface of the foundation pile;
during operation, in the using process, before each detection, a worker turns on the laser lamp 233 on the electromagnet 23, and determines whether the position of the detection device is correct through the position of the light emitted by the laser lamp 233 on the end surface of the foundation pile, so as to avoid that the position of the detection device cannot be found in time after the position of the detection device deviates in the repeated detection process, and the result of the detection on the foundation pile is affected, meanwhile, in the detection process, after the weight 3 is adsorbed on the electromagnet 23, when the center line of the weight 3, the center line of the electromagnet 23 and the center line of the foundation pile coincide with each other, the light emitted by the laser lamp 233 on the electromagnet 23 irradiates the center position of the end surface of the foundation pile, so as to ensure that after the weight 3 is lifted, the center line of the weight 3 coincides with the center line of the foundation pile, and simultaneously, in the using process, when an accident occurs, and the deviation occurs between the center lines of the weight 3 and the electromagnet 23, light rays emitted by the laser lamp 233 on the electromagnet 23 cannot irradiate the end face of the foundation pile, so that workers can find the light rays in time, and the situation that the detection result is influenced by data with overlarge deviation generated in the detection process is avoided.
As an embodiment of the present invention, a horizontal block 6 is fixedly mounted on the upper surface of the bottom plate 1; the number of the horizontal blocks 6 is four, and the horizontal blocks are uniformly distributed around the center line of the through hole 13; the horizontal block 6 is made of transparent toughened glass, and the horizontal block 6 is a cuboid with a square cross section; a cavity 64 is formed in the middle of the horizontal block 6; two ends of the horizontal block 6 are respectively and fixedly provided with a first contact 61 and a second contact 62; the first contact 61 and the second contact 62 both enter the cavity 64; the first contact 61 and the second contact 62 are not in contact with each other; a sealing ring 65 is fixedly arranged between the first contact 61 and the horizontal block 6; a sealing ring 65 is fixedly arranged between the second contact 62 and the horizontal block 6; the cavity 64 is filled with mercury beads 63, and when the horizontal block 6 is in a horizontal state, the contact I61 is communicated with the contact II 62 through the mercury beads 63; the horizontal blocks 6 on the bottom plate 1 are mutually connected in series, and the motor 4 and the electromagnet 23 cannot be started before the series circuit is conducted;
when the detection device works, in the installation and debugging processes of the detection device, when the upper surface of the bottom plate 1 in the detection device is not parallel to the horizontal plane, the first contact 61 and the second contact 62 are not conducted in the horizontal block 6 arranged on the bottom plate 1, so that a circuit formed by mutually connecting the horizontal blocks 6 in series is in an open circuit state, the detection device cannot be normally used, the correct installation of the detection device is ensured, the situation that detection personnel are lazy under partial extreme conditions and begin to be used in a 'closing' mode before the installation and debugging of the detection device are completely finished is avoided, the reliability of the detection result of a foundation pile is low or the detection result has larger errors, meanwhile, after the detection device is normally installed and the bottom plate 1 is in the horizontal state, the mercury 63 in the horizontal block 6 arranged on the bottom plate 1 rolls to the middle position of the cavity 64, the first contact 61 and the second contact 62 are conducted, the circuit formed by the mutual series connection of the horizontal blocks 6 is kept smooth, the detection device can be normally used, and the accuracy and reliability of the detection device on the foundation pile detection result are improved.
As an embodiment of the present invention, a sleeve 441 is sleeved outside the second screw 44, and the sleeve 441 is not in contact with the second screw 44; the upper end of the sleeve 441 is fixedly connected to the lower surface of the top plate 2; the lower end of the sleeve 441 is fixedly connected to the upper surface of the protective cover 43; a through groove is formed in the side surface of the sleeve 441; the lifting seat 5 on the second screw 44 penetrates through the passing groove; the opening of the through groove faces to the direction far away from the through hole 13;
during operation, in the use, protect two 44 of screw rods through sleeve 441, reduce the quantity of the impurity of adhesion to two 44 of screw rods in the detection device use, guarantee that two 44 of screw rods can normal use, can not drive lift seat 5 decline or the in-process that rises and appear blocking, simultaneously, avoid in the detection process, after weight 3 strikes the terminal surface of foundation pile, receive the weight 3 striking and appear the tiny stone that splashes and strike two 44 of screw rods, cause the screw thread on two 44 of screw rods to be impaired, influence two 44 of screw rods's normal use and two 44 of screw rods's life.
As an embodiment of the invention, a handle 24 is fixedly mounted at the upper end of the first screw 22, and the handle 24 is positioned above the top plate 2; when the handle 24 is acted by external force, the screw rod I22 rotates; scales are arranged on the surface of the sleeve 441;
during operation, when using detection device to detect the foundation pile, along with near foundation pile ground state's difference, the relative detection device's of foundation pile height is the same different, drives screw rod 22 through handle 24 and rotates, and then makes electromagnet 23 highly rise or descend, and the detection device of being convenient for adapts to the foundation pile of co-altitude not, avoids the highly fixed of the relative bottom plate 1 whereabouts of weight 3, detects time measuring to the foundation pile of difference, exists too big error, influences the accuracy of testing result.
In one embodiment of the present invention, a step groove 34 is formed at the lower end of the weight 3; when the weight 3 is lifted by the transverse plate 51, the transverse plate 51 is inserted into the step groove 34; anti-skid grooves are uniformly formed in the upper surface of the transverse plate 51; anti-skid grooves are uniformly formed in the side surface, in contact with the transverse plate 51, of the step groove 34;
the during operation, through seting up step groove 34 on weight 3, can be convenient for diaphragm 51 inserts the below of weight 3, thereby conveniently with weight 3 lifting, avoid diaphragm 51 to be difficult to between the terminal surface of disect insertion weight 3 and foundation pile, influence the lifting to weight 3, and simultaneously, in the use, set up anti-skidding groove to diaphragm 51 and in step groove 34 on the side with diaphragm 51 contact, can make contact between diaphragm 51 and the weight 3 more stable, prevent that the landing from appearing at the lifting in-process in weight 3, cause personnel's injury or damage detection device.
The specific working process is as follows:
during working, in the process of detection, a worker sleeves the detection device on a foundation pile to be detected and enables the upper end face of the foundation pile to penetrate out of the through hole 13, then controls the electric push rod 11 to enable the extension rod 12 on the electric push rod 11 to extend downwards or retract, levels the detection device, fixes a sensor for detecting data on a proper position on the foundation pile, simultaneously lifts the heavy hammer 3 and synchronously turns on the electromagnet 23 after the worker completes installation of the detection device, so that the heavy hammer 3 is adsorbed by the electromagnet 23, and simultaneously controls the electromagnet 23 to be turned off after the heavy hammer 3 is adsorbed on the electromagnet 23 and irrelevant people near the detection device are cleared away, so that the electromagnet 23 loses magnetic force and does not have magnetic attraction to the heavy hammer 3, further the heavy hammer 3 makes free falling body movement in the air under the action of gravity and impacts on the upper surface of the foundation pile, completing detection of the foundation pile; the worker manually pulls out the transverse plate 51 on the lifting seat 5, inserts the transverse plate 51 below the weight 3, simultaneously, before the transverse plate 51 on the lifting seat 5 is pulled out, the insertion rod 511 is positioned in the mounting hole, the insertion rod 511 is positioned in the second notch 517 on the stop block 512, the stop block 512 is in a lifting state relative to the lifting seat 5, and then, in the process of pulling out the transverse plate 51, the insertion rod 511 passes through the second notch 517, when the first notch 516 on the insertion rod 511 passes through the stop block 512, the transverse plate 51 is completely pulled out, and the stop block 512 is not stopped by the insertion rod 511, so that the stop block 512 descends from the first notch 516 group relative to the lifting seat 5, the stop block 512 is inserted into the first notch 516, and the relative position of the insertion rod 511 is fixed; meanwhile, in the using process, after the worker finishes the position adjustment of the weight 3 on the transverse plate 51, the worker turns on the motor 4, the output shaft 41 of the motor 4 drives the synchronous belt 42 to rotate, then the synchronous belt 42 drives the second screw 44 to rotate, because the lifting seat 5 is installed on the second screw 44 through threads, after the motor 4 is started, the lifting seat 5 starts to gradually rise, so as to lift the weight 3 upwards, meanwhile, after the weight 3 approaches the electromagnet 23, the worker starts the electromagnet 23, fixes the weight 3 through the electromagnet 23, meanwhile, when the electromagnet 23 fixes the weight 3, the magnetic force of the electromagnet 23 acts on the stop block 512, so that the stop block 512 moves upwards relative to the lifting seat 5 under the action of the magnetic force, when the notch 517 on the stop block 512 reaches the position of the insertion rod 511, under the action of the spring 513, the insertion rod 511 passes through the second notch 517 and returns to the mounting hole again, and the transverse plate 51 is driven to retract to the initial position; the weight 3 is made of soft magnetic material, so that the phenomenon that the weight 3 forms a magnetic field after the weight 3 is adsorbed by the electromagnet 23 is avoided, and when the electromagnet 23 is powered off and the weight 3 is released, the weight 3 cannot be released quickly, and the falling track of the weight 3 is influenced; meanwhile, the rest parts except the heavy hammer 3 and the electromagnet 23 in the detection device are wrapped by a magnetic shielding layer, so that the electromagnet 23 is prevented from magnetizing the parts in the detection device in the long-term use process of the detection device; because the heavy hammer 3 needs to frequently impact the end face of the foundation pile, in addition, the soft magnetic material for preparing the heavy hammer 3 is easy to crack, in the process of preparing the heavy hammer 3, the titanium alloy net is embedded into a blank prepared before powder metallurgy, and then sintering is directly carried out, so that the titanium alloy net is embedded in the obtained finished heavy hammer 3, the structure of the heavy hammer 3 is reinforced, and meanwhile, a protective layer 33 is wrapped on the outer surface of the heavy hammer 3 to prevent the edge of the heavy hammer 3 from cracking and falling; after the weight 3 is adsorbed on the electromagnet 23, the electromagnet 23 is provided with the groove 231, the weight 3 is provided with the protrusion 31, and the protrusion 31 and the groove 231 can be matched with each other, so that after the weight 3 is adsorbed and fixed on the electromagnet 23, the protrusion 31 and the groove 231 are mutually embedded, the central lines of the protrusion 31 and the groove 231 are mutually overlapped, the central lines of the weight 3 and the electromagnet 23 are mutually overlapped, meanwhile, when a worker installs the detection device, the worker adjusts the detection device, so that the central line of the through hole 13 on the detection device and the central line of the foundation pile are mutually overlapped, and after the protrusion 31 on the weight 3 is matched with the groove 231 on the electromagnet 23, the central line of the weight 3 fixed on the electromagnet 23 and the central line of the foundation pile are mutually overlapped; when the weight 3 is adsorbed on the electromagnet 23, the ball arranged on the surface of the groove 231 causes deviation between the protrusion 31 and the groove 231, the protrusion 31 can move in the groove 231, and finally, the center line of the protrusion 31 and the center line of the groove 231 are mutually overlapped, so that the center line of the weight 3 and the center line of the foundation pile are mutually overlapped; before each detection, a worker turns on the laser lamp 233 on the electromagnet 23, and determines whether the position of the detection device is correct or not through the position of the light emitted by the laser lamp 233 on the end face of the foundation pile, and meanwhile, in the detection process, after the weight 3 is adsorbed on the electromagnet 23, when the center line of the weight 3, the center line of the electromagnet 23 and the center line of the foundation pile coincide with each other, the light emitted by the laser lamp 233 on the electromagnet 23 irradiates the center position of the end face of the foundation pile; when the upper surface of a bottom plate 1 in the detection device is not parallel to the horizontal plane, a situation that a first contact 61 and a second contact 62 are not conducted exists in a horizontal block 6 arranged on the bottom plate 1, so that a circuit formed by the horizontal blocks 6 connected in series is in an open circuit state, the detection device cannot be normally used, meanwhile, after the detection device is normally arranged and the bottom plate 1 is in the horizontal state, a mercury bead 63 in the horizontal block 6 arranged on the bottom plate 1 rolls to the middle position of a cavity 64, the first contact 61 and the second contact 62 are conducted, so that the circuit formed by the horizontal blocks 6 connected in series is kept smooth, and the detection device can be normally used; the second screw 44 is protected by the sleeve 441, so that the quantity of impurities adhered to the second screw 44 in the use process of the detection device is reduced, and meanwhile, the second screw 44 is prevented from being impacted by small stones splashed when the heavy hammer 3 is impacted after the heavy hammer 3 impacts the end face of the foundation pile in the detection process, so that threads on the second screw 44 are damaged; the handle 24 drives the screw rod I22 to rotate, so that the height of the electromagnet 23 is increased or decreased, and different foundation piles are detected; the step groove 34 is formed in the weight 3, so that the transverse plate 51 can be conveniently inserted into the lower portion of the weight 3 to lift the weight 3, and the anti-slip grooves are formed in the transverse plate 51 and the side surface of the step groove 34, which is in contact with the transverse plate 51, to stabilize the contact between the transverse plate 51 and the weight 3.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a building engineering foundation pile detecting system which characterized in that: comprises a detection device; the detection device comprises a bottom plate (1); an electric push rod (11) is fixedly arranged on the lower surface of the bottom plate (1); an extension bar (12) on the electric push rod (11) extends downwards and contacts the ground; a through hole (13) is formed in the middle of the bottom plate (1); a second screw (44) is fixedly arranged on the upper surface of the bottom plate (1); a top plate (2) is fixedly arranged at one end of the second screw rod (44) far away from the bottom plate (1); a mounting seat (21) is fixedly arranged in the middle of the upper surface of the top plate (2); a first screw rod (22) is fixedly arranged in the mounting seat (21) through threads; the lower end of the first screw rod (22) penetrates through the top plate (2) and is positioned below the lower surface of the top plate (2); an electromagnet (23) is fixedly arranged on the lower end of the first screw rod (22); the electromagnet (23) is circular, and the center line of the electromagnet (23) is overlapped with the center line of the through hole (13); after the electromagnet (23) is electrified, the heavy hammer (3) is adsorbed and fixed on the lower surface of the electromagnet (23) through magnetic force; after the heavy hammer (3) is fixed on the electromagnet (23), the central line of the heavy hammer (3) and the central line of the through hole (13) are overlapped;
a horizontal block (6) is fixedly arranged on the upper surface of the bottom plate (1); the number of the horizontal blocks (6) is four, and the horizontal blocks are uniformly distributed around the central line of the through hole (13); the horizontal block (6) is prepared from transparent toughened glass, and the horizontal block (6) is a cuboid with a square cross section; a cavity (64) is formed in the middle of the horizontal block (6); two ends of the horizontal block (6) are respectively and fixedly provided with a first contact (61) and a second contact (62); the first contact (61) and the second contact (62) both enter the cavity (64); the contact I (61) is not in contact with the contact II (62); a sealing ring (65) is fixedly arranged between the first contact (61) and the horizontal block (6); a sealing ring (65) is fixedly arranged between the second contact (62) and the horizontal block (6); the cavity (64) is filled with mercury beads (63), and when the horizontal block (6) is in a horizontal state, the contact I (61) is communicated with the contact II (62) through the mercury beads (63); horizontal blocks (6) on the bottom plate (1) are mutually connected in series, and the motor (4) and the electromagnet (23) cannot be started before the series circuit is conducted.
2. The constructional engineering foundation pile detection system as claimed in claim 1, wherein: a lifting seat (5) is fixedly arranged on the second screw rod (44) through threads; a mounting hole is formed in the lifting seat (5); an insertion rod (511) is arranged in the mounting hole in a sliding manner; a spring (513) is fixedly arranged on the bottom surface of the mounting hole; the other end of the spring (513) is fixedly connected to the end face of the insertion rod (511) in the mounting hole; a transverse plate (51) is fixedly arranged at one end of the insertion rod (511) positioned outside the mounting hole; the connecting line between the lifting seat (5) and the transverse plate (51) is superposed with the radial direction of the through hole (13);
a protective cover (43) is fixedly arranged on the upper surface of the bottom plate (1), and the lower end of the second screw rod (44) is positioned in the inner space of the protective cover (43); a motor (4) is fixedly arranged on the lower surface of the bottom plate (1); an output shaft (41) of the motor (4) penetrates through the bottom plate (1) and enters the inner space of the protective cover (43); the second screw (44) and an output shaft (41) of the motor (4) are connected with each other through a synchronous belt (42) and transmit power;
a stop block (512) is slidably mounted on the lifting seat (5), and the stop block (512) penetrates through the lifting seat (5); a first notch (516) is formed in the insertion rod (511); a second notch (517) is formed in the stop block (512); an upper plate (514) is fixedly mounted at the upper end of the stop block (512), and the area of the upper plate (514) is larger than the cross-sectional area of the stop block (512); the lower end of the stop block (512) is fixedly provided with a lower plate (515), and the area of the lower plate (515) is larger than the cross-sectional area of the stop block (512); the weight of the lower plate (515) is significantly greater than the weight of the upper plate (514); after the insertion rod (511) extends out of the mounting hole, the stop block (512) is embedded into the first notch (516) on the insertion rod (511), and the second notch (517) on the stop block (512) is positioned below the first notch (516); after the insertion rod (511) extends out of the mounting hole, the heavy hammer (3) is lifted by the transverse plate (51).
3. The constructional engineering foundation pile detection system as claimed in claim 1, wherein: the heavy hammer (3) is made of soft magnetic material; the outer sides of the rest parts except the heavy hammer (3) and the electromagnet (23) in the detection device are wrapped with a magnetic shielding layer.
4. A construction engineering foundation pile detection system according to claim 3, wherein: a layer of titanium alloy net is embedded in the heavy hammer (3); the titanium alloy mesh is used as a skeleton attached powder raw material in the process of preparing the heavy hammer (3) in a powder metallurgy mode, a blank is obtained by pressing, and then sintering is carried out to obtain the finished heavy hammer (3); the melting point of the titanium alloy net is higher than that of the soft magnetic material for preparing the heavy punch (3); after the heavy hammer (3) is prepared, a protective layer (33) is coated on the outer surface of the heavy hammer (3).
5. The constructional engineering foundation pile detection system as claimed in claim 1, wherein: a groove (231) is formed in the lower surface of the electromagnet (23), and the groove (231) is arc-shaped; the central line of the electromagnet (23) and the central line of the groove (231) are overlapped; a bulge (31) is fixedly arranged on the upper surface of the heavy hammer (3), and the bulge (31) is arc-shaped; the center line of the heavy hammer (3) and the center line of the bulge (31) are overlapped; the protrusion (31) on the heavy hammer (3) is just inserted into the groove (231) on the electromagnet (23).
6. The constructional engineering foundation pile detection system as claimed in claim 5, wherein: miniature balls are uniformly arranged on the surface of the groove (231); the balls are free to rotate on the surface of the groove (231); after the protrusion (31) is inserted into the groove (231), the surface of the protrusion (31) and the ball on the surface of the groove (231) are in contact with each other.
7. The constructional engineering foundation pile detection system as claimed in claim 1, wherein: a fixed cavity is formed in the lower surface of the electromagnet (23), and an opening of the fixed cavity is downward; the central line of the fixed cavity and the central line of the electromagnet (23) are superposed with each other; a transparent baffle (232) is fixedly arranged in the fixed cavity; the transparent baffle (232) is positioned in the fixed cavity and close to the outlet; the bottom surface of the fixed cavity is fixedly provided with a laser lamp (233), and a gap is formed between the laser lamp (233) and the transparent baffle (232);
the upper surface of the heavy hammer (3) is provided with a through hole (32); the center line of the through hole (32) and the center line of the heavy hammer (3) are superposed with each other; after the heavy hammer (3) is fixed on the lower surface of the electromagnet (23), light emitted by the laser lamp (233) passes through the through hole (32) and irradiates the central point of the upper end surface of the foundation pile.
8. The constructional engineering foundation pile detection system as claimed in claim 2, wherein: a sleeve (441) is sleeved on the outer side of the second screw rod (44), and the sleeve (441) is not in contact with the second screw rod (44); the upper end of the sleeve (441) is fixedly connected to the lower surface of the top plate (2); the lower end of the sleeve (441) is fixedly connected to the upper surface of the protective cover (43); a through groove is formed in the side surface of the sleeve (441); the lifting seat (5) on the second screw rod (44) penetrates through the passing groove; the opening of the through groove faces a direction away from the through hole (13).
9. The constructional engineering foundation pile detection system as claimed in claim 8, wherein: a handle (24) is fixedly installed at the upper end of the first screw rod (22), and the handle (24) is positioned above the top plate (2); when the handle (24) is acted by external force, the screw rod I (22) rotates; scales are arranged on the surface of the sleeve (441).
10. The constructional engineering foundation pile detection system as claimed in claim 2, wherein: the lower end of the heavy hammer (3) is provided with a step groove (34); when the weight (3) is lifted by the transverse plate (51), the transverse plate (51) is inserted into the step groove (34); anti-skid grooves are uniformly formed in the upper surface of the transverse plate (51); and anti-skidding grooves are uniformly formed in the side surface, in the step groove (34), contacted with the transverse plate (51).
CN202110457467.9A 2021-04-27 2021-04-27 Building engineering foundation pile detecting system Active CN113235670B (en)

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CN114111582B (en) * 2021-12-13 2023-06-16 西华大学 Pile foundation heavy hammer alignment device and application method
CN118087629B (en) * 2024-04-22 2024-06-21 广东裕恒工程检测技术有限责任公司 Foundation pile detection fixing device for engineering detection

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CN201874018U (en) * 2010-10-28 2011-06-22 重庆工程职业技术学院 Light inclinometer for sunk well in submerged water
US20140190275A1 (en) * 2013-01-05 2014-07-10 Concept Torque Solutions Inc. Load Cell for Screw Pililng Power Head
CN207880132U (en) * 2018-01-20 2018-09-18 黄勇 A kind of lever safety valve
CN108343100B (en) * 2018-03-23 2024-03-15 佛山市公路桥梁工程监测站有限公司 High strain heavy hammer combination
CN109138007A (en) * 2018-09-25 2019-01-04 福建省永正工程质量检测有限公司 A kind of foundation pile high stress detection vehicle
CN112160355B (en) * 2020-09-23 2021-08-03 哈尔滨铁路建设咨询有限公司 Pile foundation detection device and method for building engineering supervision

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