CN210737620U - Automatic monitoring device for height of concrete surface of cast-in-place pile - Google Patents

Abstract

The utility model relates to a technical field of concrete face height monitoring, a bored concrete pile concrete face height automatic monitoring devices is disclosed, including being the digital display control module of fixed arrangement, the cable and be used for monitoring the monitoring probe of the concrete height in the bored concrete pile hole, the one end and the digital display control module of cable are swing joint, the other end is fixed arrangement with the monitoring probe, the monitoring probe includes the casing, light sensor subassembly and light source subassembly are swing joint with the bottom surface of casing respectively, have the clearance between the two and be just to arranging, fill concrete thick liquid to the bored concrete pile hole light sensor subassembly and light source subassembly and sink into the concrete thick liquid, the light sensor subassembly can't sense the light that sends, the digital display control module reports to the police and reminds; the height of the concrete surface is monitored through the induction of the photosensitive sensor assembly, automatic monitoring is achieved, inconvenience caused by manual monitoring is avoided, and accuracy is improved.

Description

Automatic monitoring device for height of concrete surface of cast-in-place pile

Technical Field

The patent of the utility model relates to a technical field of concrete face height monitoring particularly, relates to an automatic monitoring devices of bored concrete pile concrete face height.

Background

At present, concrete cast-in-place piles are increasingly applied to the field of constructional engineering, the concrete slump is too large and even isolated due to various reasons, such as too high admixture amount or over-standard water consumption, of the cast-in-place piles in the grouting process, floating slurry occurs, the floating slurry is vibrated and then is collected on the upper portion of the concrete to form a floating slurry layer, and the strength of the solidified floating slurry layer cannot meet the standard requirement of the cast-in-place piles. Therefore, in order to avoid the influence of the floating slurry layer, when the pile top elevation of the cast-in-place pile is controlled, a certain height, generally more than 500mm, is required to be over-poured on the designed elevation of the cast-in-place pile, and the floating slurry part is chiseled off after the concrete is solidified, so that the pile body finally formed by the floating slurry layer cannot be avoided if the over-poured height is too low, and the pile body is not qualified, and if the over-poured height is too much, the concrete is wasted and the subsequent construction is difficult.

At present, in the control process of the height of the super-grouting pile, the problem which is difficult to solve is how to accurately identify the interface of the concrete and the laitance, so that the actual height of the concrete is determined.

The height of the concrete surface of the cast-in-place pile is determined by a manual method, and the method has high requirements on operators and easily causes large errors, so that concrete materials are often greatly wasted, the construction speed is reduced, the project progress is slow, and the monitoring by manual work has great potential safety hazards.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic monitoring devices of bored concrete pile concrete face height aims at solving prior art, and the problem that the monitoring degree of accuracy of bored concrete pile concrete face height is low.

The utility model is realized in such a way, an automatic monitoring device for the concrete surface height of a cast-in-place pile comprises a digital display control module, a cable and a monitoring probe for monitoring the concrete height in a cast-in-place pile hole, wherein one end of the cable is movably connected with the digital display control module, the other end is fixedly arranged with the monitoring probe, the monitoring probe comprises a shell, a light sensor component and a light source component, the shell is provided with a downward bottom surface, the light sensor component and the light source component are respectively movably connected with the bottom surface of the shell, a gap is arranged between the light sensor component and the light source component and just opposite to the light source component, when the monitoring probe is suspended in the cast-in-place pile hole, concrete slurry is poured into the cast-in-place pile hole until the light sensor component and the light source component are immersed in the concrete slurry, the light sensor component can not sense the light emitted by the light source component, the digital display control module gives an alarm for reminding.

Further, the photosensitive sensor assembly comprises a first rotary disc, a photosensitive resistor fixed on the first rotary disc, a first shell wrapping the photosensitive resistor, and a first brush, the first shell and the first rotary disc are fixedly arranged, the first brush comprises a first brush handle and a first brush bristle group, the first brush handle and the shell are fixedly arranged, one end of the first brush bristle group is fixed on the first brush handle, the other end of the first brush bristle group abuts against the first shell, a first round hole is formed in the bottom surface of the shell, the first rotary disc is embedded into the first round hole, the shell is provided with a first motor, and the first motor is located inside the shell and is fixedly arranged with the first rotary disc; the light source subassembly includes the second carousel, fixes lamp body, parcel on the second carousel the second shell and the second brush of lamp body, the second shell with the second carousel is fixed arrangement, the second brush includes second brush holder and second brush hair group, the second brush holder with the casing is fixed arrangement, the one end of second brush hair group is fixed on the second brush holder, the other end butt the second shell, the bottom surface of casing forms the second round hole, the embedding of second carousel the second round hole, the casing is equipped with the second motor, the second motor is in inside the casing, and with the second carousel is fixed arrangement.

Further, the casing is equipped with the mesh screen that is the sphere form, the mesh screen includes first arc, second arc and net board, first arc with the second arc is fixed respectively on the bottom surface of casing, and be symmetrical arrangement, first arc partly surrounds photosensitive induction ware subassembly, second arc partly surrounds the light source subassembly, one side of net board with first arc is fixed arrangement, the opposite side with the second arc is fixed arrangement, the net board forms a plurality of meshs.

Further, the bottom surface of casing is protruding formation counter weight rampart downwards, the counter weight rampart encircles the mesh screen just is the circumference and arranges, the counter weight rampart has surface outwards, a plurality of through-holes have on the surface of counter weight rampart, and is a plurality of the through-hole is followed the periphery interval arrangement is personally submitted to the surface of counter weight rampart, the counter weight rampart has lower surface down, follows and deviates from the radial direction of the surface of counter weight rampart, the lower surface of counter weight rampart is the tilt up and arranges.

Further, digital display control module is including being used for showing monitor probe degree of depth position's display screen, be used for reporting to the police pilot lamp, control and port of reminding, the one end embedding of cable the port, and with the port is swing joint, the control respectively with the display screen the pilot lamp and the cable is electric connection, works as during the cable embedding the port, the control passes through the cable with the lamp body the photo resistance first motor and the second motor is electric connection.

Further, the digital display control module is fixed on the support, the support includes base and runner, the base has up end, the up end of base is sunken downwards and is formed the runner groove, the runner is in the runner groove, the runner groove has and is just to two sides of arranging, the both ends of runner imbed respectively two sides of runner groove, just the runner with the runner groove is the rotation and is connected, the runner has the couple, the one end of cable has the buckle, works as the one end of cable with when the port breaks away from the connection, will the buckle lock joint in on the couple rotates the runner, the cable is in wind or expand on the runner.

Further, the outer surface of the rotating wheel is inwards recessed along the radial direction to form a thread groove, the width of the thread groove is larger than the diameter of the cable, the thread groove is spirally arranged in a surrounding mode along the direction from one end of the rotating wheel to the other end of the rotating wheel, when the rotating wheel is rotated to wind the cable, the cable is embedded into the thread groove and evenly wound on the rotating wheel, and when the rotating wheel is rotated to unwind the cable, the cable is separated from the thread groove and the monitoring probe descends in the cast-in-place pile hole.

Furthermore, a plurality of convex blocks are formed on the outer surface of the rotating wheel, two side surfaces of the rotating wheel groove are respectively provided with a buckling piece, when the rotating wheel rotates to enable the monitoring probe to be at a preset height, the buckling piece buckles one of the convex blocks, and the rotating wheel groove are in relatively fixed arrangement.

Furthermore, the base of support extends towards the direction in bored concrete pile hole and forms the backup pad, the backup pad part unsettled in the top in bored concrete pile hole, be equipped with the pulley in the backup pad, the cable certainly the runner process the pulley extends to in the bored concrete pile hole.

Further, the outer surfaces of the first motor and the second motor are wrapped with waterproof resin materials.

Compared with the prior art, the utility model provides an automatic monitoring device of bored concrete pile concrete face height, the one end of cable is swing joint with digital display control module, the other end is fixed arrangement with monitoring probe, the cable is transferred down along the bored concrete pile hole, until monitoring probe reaches predetermined degree of depth, namely predetermined concrete face height position, keep the position of current monitoring probe unchangeable, the light source subassembly on the casing keeps the light-emitting state, photosensitive inductor subassembly responds to the light that the light source subassembly sent, pour concrete thick liquid into the bored concrete pile hole, until photosensitive inductor subassembly and light source subassembly sink into concrete thick liquid simultaneously, photosensitive inductor subassembly can't sense the light that the light source subassembly sent, photosensitive inductor subassembly transmits the signal to digital display control module, digital display control module reports to the police and reminds, monitor the height of concrete face through the response of photosensitive inductor subassembly, automatic monitoring is realized, inconvenience caused by manual monitoring is avoided, and accuracy is improved.

Drawings

Fig. 1 is a front view of an automatic monitoring device for the concrete surface height of a cast-in-place pile provided by the present invention;

fig. 2 is a schematic structural diagram of a monitoring probe of an automatic monitoring device for the concrete surface height of a cast-in-place pile provided by the present invention;

fig. 3 is a schematic structural diagram of a bracket of an automatic monitoring device for the concrete surface height of a cast-in-place pile provided by the present invention;

fig. 4 is a schematic circuit connection diagram of an automatic monitoring device for the concrete surface height of a cast-in-place pile.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1-4, the preferred embodiment of the present invention is shown.

The automatic monitoring devices of bored concrete pile concrete face height that this embodiment provided for solve the problem that the monitoring degree of accuracy of bored concrete pile concrete face height is low.

An automatic monitoring device for the height of a concrete surface of a cast-in-place pile comprises a digital display control module 1, a cable 2 and a monitoring probe 3 for monitoring the height of the concrete in a cast-in-place pile hole, wherein one end of the cable 2 is movably connected with the digital display control module 1, the other end of the cable is fixedly arranged with the monitoring probe 3, the monitoring probe 3 comprises a shell 31, a photosensitive sensor assembly 32 and a light source assembly 33, the shell 31 is provided with a downward bottom surface, the photosensitive sensor assembly 32 and the light source assembly 33 are respectively movably connected with the bottom surface of the shell 31, a gap is formed between the two and are arranged oppositely, when monitoring probe 3 suspension in bored concrete pile is downthehole, toward the downthehole concrete thick liquid that pours into of bored concrete pile to light sensor subassembly 32 and light source subassembly 33 and submerge the concrete thick liquid, light that light sensor subassembly 32 can't sense light that light source subassembly 33 sent, the warning of digital display control module 1.

The automatic monitoring device for the height of the concrete surface of the cast-in-place pile comprises a cable 2, one end of the cable is movably connected with a digital display control module 1, the other end of the cable is fixedly arranged with a monitoring probe 3, the cable 2 is placed downwards along a cast-in-place pile hole until the monitoring probe 3 reaches a preset depth, namely the height of the preset concrete surface, the position of the current monitoring probe 3 is kept unchanged, a light source assembly 33 on a shell 31 keeps a light-emitting state, a photosensitive sensor assembly 32 senses light emitted by the light source assembly 33 and pours concrete grout into the cast-in-place pile hole until the photosensitive sensor assembly 32 and the light source assembly 33 simultaneously sink into the concrete grout, the photosensitive sensor assembly 32 cannot sense the light emitted by the light source assembly 33, the photosensitive sensor assembly 32 transmits a signal to the digital display control module 1, the digital display control module 1 alarms and reminds, the height of the concrete surface is monitored by sensing of the photosensitive sensor assembly, automatic monitoring is realized, inconvenience caused by manual monitoring is avoided, and accuracy is improved.

The cable 2 is provided with a length mark, and when the cable 2 is placed in the cast-in-place pile hole until the specified length mark is reached, the monitoring probe 3 reaches a preset height.

The photosensitive sensor assembly 32 comprises a first rotating disc 321, a photosensitive resistor 323 fixed on the first rotating disc 321, a first shell 324 wrapping the photosensitive resistor 323, and a first brush 325, wherein the first shell 324 and the first rotating disc 321 are fixedly arranged, the first brush 325 comprises a first brush handle 3251 and a first brush bristle group 3252, the first brush handle 3251 and the shell 31 are fixedly arranged, one end of the first brush bristle group 3252 is fixed on the first brush handle 3251, the other end of the first brush bristle group is abutted against the first shell 324, a first round hole is formed in the bottom surface of the shell 31, the first rotating disc 321 is embedded into the first round hole, the shell 31 is provided with a first motor 326, and the first motor 326 is located inside the shell 31 and is fixedly arranged with the first rotating disc 321; the light source assembly 33 includes a second rotating disc 331, a lamp body 333 fixed on the second rotating disc 331, a second housing 334 and a second brush 335 wrapping the lamp body 333, the second housing 334 and the second rotating disc 331 are fixedly arranged, the second brush 335 includes a second brush holder 3351 and a second brush group 3352, the second brush holder 3351 and the casing 31 are fixedly arranged, one end of the second brush group 3352 is fixed on the second brush holder 3351, the other end of the second brush group is abutted to the second housing 334, a second round hole is formed on the bottom surface of the casing 31, the second rotating disc 331 is embedded into the second round hole, the casing 31 is provided with a second motor 336, the second motor 336 is located inside the casing 31, and is fixedly arranged with the second rotating disc 331.

The first shell 324 wraps the photoresistor 323, the photoresistor 323 is protected, the photoresistor 323 is prevented from being damaged due to the fact that the photoresistor 323 is soaked by concrete slurry, the first brush handle 3251 is fixed on the shell 31, the first brush group 3252 abuts against the first shell 324, the first shell 324 is fixed on the first rotary disc 321, the first motor 326 drives the first rotary disc 321 to rotate, the first shell 324 rotates relative to the first brush group 3252, the first motor 326 is started before the monitoring probe 3 is placed into a bored concrete pile hole, the first brush group 3252 removes soil on the first shell 324 and residual concrete slurry after the last use, and it is guaranteed that the photoresistor 323 can sense light normally; the second casing 334 wraps the lamp body 333, so that the lamp body 333 is protected, the lamp body 333 is prevented from being soaked by concrete slurry and damaged, the second brush handle 3351 is fixed on the shell 31, the second bristle group 3352 abuts against the second casing 334, the second casing 334 is fixed on the second rotating disc 331, the second motor 336 drives the second rotating disc 331 to rotate, the second casing 334 rotates relative to the second bristle group 3352, the monitoring probe 3 is placed in a bored concrete pile hole, the second motor 336 is started, the second bristle group 3352 removes mud on the second casing 334 and residual concrete slurry after the last use, and it is ensured that light emitted by the lamp body 333 can normally penetrate through the second casing 334; by removing the concrete paste on the first casing 324 and the second casing 334, the phenomenon that the monitoring is affected due to the fact that the photoresistor 323 cannot sense light emitted by the lamp body 333 because the photoresistor 323 is shielded because the concrete paste does not reach the preset height in the process of pouring the concrete paste is avoided.

After the concrete paste reaches the preset height, the concrete paste submerges the photosensitive sensor assembly 32 and the light source assembly 33, the first motor 326 and the second motor 336 continuously work, and the first bristle group 3252 and the second bristle group 3352 rotate, and meanwhile, the concrete paste is in a liquid state, so that the first shell 324 and the second shell 334 can be supplemented and covered in time, and light emitted by the lamp body 333 cannot be sensed by the photosensitive resistor 323.

The first housing 324 and the second housing 334 are made of transparent plastic to allow light to pass through.

Casing 31 is equipped with the mesh screen 311 that is the sphere form, mesh screen 311 includes first arc 3111, second arc 3112 and net board 3113, first arc 3111 is fixed respectively on casing 31's bottom surface with second arc 3112, and be symmetrical arrangement, first arc 3111 half surrounds photosensitive inductor assembly 32, second arc 3112 half surrounds light source subassembly 33, one side and first arc 3111 of net board 3113 are fixed arrangement, the opposite side is fixed arrangement with second arc 3112, net board 3113 forms a plurality of meshs.

The first arc-shaped plate 3111 semi-surrounds the photosensitive sensor assembly 32, and the second arc-shaped plate 3112 semi-surrounds the light source assembly 33, so that the photosensitive sensor assembly 32 and the light source assembly 33 are protected respectively, and the phenomenon that parts are damaged and monitoring use is influenced due to impact of stones on the photosensitive sensor assembly 32 and the light source assembly 33 when concrete slurry is poured is avoided; the mesh of the grid plate 3113 allows concrete slurry to pass through, blocking larger rocks.

The bottom surface of the shell 31 protrudes downward to form a counterweight annular wall 312, the counterweight annular wall 312 surrounds the mesh screen 311 and is circumferentially arranged, the counterweight annular wall 312 has an outward outer surface, a plurality of through holes 3121 are formed in the outer surface of the counterweight annular wall 312, the plurality of through holes 3121 are circumferentially arranged at intervals along the outer surface of the counterweight annular wall 312, the counterweight annular wall 312 has a downward lower surface, and the lower surface of the counterweight annular wall 312 is obliquely arranged upward along a radial direction away from the outer surface of the counterweight annular wall 312.

The material of the counterweight annular wall 312 is stainless steel, a counterweight is added to the shell 31, the counterweight annular wall 312 is positioned on the bottom surface of the shell 31, the light source assembly 33 and the light sensor assembly 32 are ensured to face downwards all the time in the cast-in-place pile hole, and can be submerged in concrete slurry due to the gravity action of the counterweight annular wall 312, the lower surface of the counterweight annular wall 312 is obliquely arranged, so that the counterweight annular wall 312 can be submerged in the concrete slurry more easily, the concrete slurry and air can flow through the through holes 3121, and the counterweight annular wall 312 is prevented from being wrapped by the air and cannot sink; the counterweight annular wall 312 surrounds the mesh screen 311 to prevent damage to the casing 31 when it collides with the wall of the bored concrete pile bore.

The digital display control module 1 comprises a display screen for displaying the depth position of the monitoring probe 3, an indicator lamp for alarming and reminding, a control element and a port, one end of the cable 2 is embedded into the port and is movably connected with the port, the control element is respectively electrically connected with the display screen, the indicator lamp and the cable 2, and when the cable 2 is embedded into the port, the control element is electrically connected with the lamp body 333, the photoresistor 323, the first motor 326 and the second motor 336 through the cable 2.

When the light body 333 and the photoresistor 323 are blocked by concrete paste, the photoresistor 323 cannot sense light emitted by the light body 333, the resistance value of the photoresistor 323 is increased sharply, signals are transmitted to the control piece, and the control piece controls the indicator lamp to flash, so that the alarm reminding function is achieved.

Digital display control module 1 fixes on the support, the support includes base and runner, the base has up end, the up end of base is sunken downwards and is formed the runner groove, the runner is in the runner inslot, the runner groove has and is just to two sides of arranging, the both ends of runner imbed two sides in runner groove respectively, and the runner is to rotate with the runner groove and be connected, the runner has the couple, the one end of cable 2 has buckle 21, when the one end of cable 2 breaks away from with the port and is connected, with buckle 21 lock joint on the couple, rotate the runner, cable 2 twines or expandes on the runner.

When the monitoring probe 3 is placed in the bored concrete pile hole, the cable 2 is disconnected from the port of the digital display control module 1, the retaining ring 21 of the cable 2 is buckled on the hook of the rotating wheel, the rotating wheel is rotated to enable the cable 2 to descend in the bored concrete pile hole until the monitoring probe 3 reaches a preset height, the retaining ring 21 is taken down from the hook, the cable 2 is connected with the port, and the photoresistor 323, the lamp body 333, the first motor 326 and the second motor 336 are communicated with the digital display control module 1; when the cable 2 is recovered, the cable 2 is disconnected from the port of the digital display control module 1, the retaining ring 21 of the cable 2 is buckled on the hook of the rotating wheel, and the rotating wheel is rotated to recover and wind the cable 2 on the rotating wheel.

The surface of runner is along the diameter of radial direction undercut formation thread groove, and the width of thread groove is greater than cable 2, and along the direction of the one end to the other end of runner, the thread groove is the spiral and encircles and arranges, when rotating the runner and making 2 twines of cable, 2 embedding thread grooves of cable and even winding are on the runner, when rotating the runner and making 2 expandes of cable, and cable 2 breaks away from the thread groove and makes monitoring probe 3 descend in the bored concrete pile hole.

The cable 2 is embedded into the thread groove, so that the cable 2 is wound on the rotating wheel more regularly and tidily, and is not entangled to cause knotting.

The outer surface of the rotating wheel is provided with a plurality of convex blocks, two side surfaces of the rotating wheel groove are respectively provided with a buckling piece, when the rotating wheel rotates to enable the monitoring probe 3 to be at a preset height, the buckling piece buckles one of the convex blocks, and the rotating wheel groove are in relatively fixed arrangement.

When the monitoring probe 3 reaches the preset height, the rotating wheel can be fixed through the buckling effect of the buckling piece and the convex block, so that the monitoring probe 3 is kept at the current height and is prevented from continuously descending under the action of gravity, and monitoring errors are avoided.

The base of support extends towards the direction in bored concrete pile hole and forms the backup pad, and the backup pad part is unsettled in the top in bored concrete pile hole, is equipped with the pulley in the backup pad, and the cable 2 extends to in the bored concrete pile hole from the runner through the pulley.

The backup pad is unsettled in the top in bored concrete pile hole for cable 2 and monitoring probe 3 can not collide the wall in bored concrete pile hole easily and cause the damage, and cable 2 reciprocates in bored concrete pile hole through the roll of pulley, avoids cable 2 and ground direct contact, leads to frictional resistance too big, and causes wearing and tearing to cable 2.

The first motor 326 and the second motor 336 are externally wrapped with a waterproof resin material.

The waterproof resin material is wrapped by the first motor 326 and the second motor 336, so that the first motor 326 and the second motor 336 are prevented from being damaged by short circuit caused by water in concrete slurry, the motors are protected, and the motors can normally work.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An automatic monitoring device for the height of a concrete surface of a cast-in-place pile is characterized by comprising a digital display control module, a cable and a monitoring probe, wherein the digital display control module, the cable and the monitoring probe are fixedly arranged, the monitoring probe is used for monitoring the height of the concrete in a cast-in-place pile hole, one end of the cable is movably connected with the digital display control module, the other end of the cable is fixedly arranged with the monitoring probe, the monitoring probe comprises a shell, a photosensitive sensor assembly and a light source assembly, the shell is provided with a downward bottom surface, the photosensitive sensor assembly and the light source assembly are respectively movably connected with the bottom surface of the shell, a gap is formed between the photosensitive sensor assembly and the light source assembly and are just opposite to each other, when the monitoring probe is suspended in the cast-in-place pile hole, concrete slurry is poured into the cast-in-place pile hole until the photosensitive, the digital display control module gives an alarm for reminding.

2. An automatic monitoring device for the concrete surface height of a cast-in-place pile as claimed in claim 1, wherein said photosensitive sensor assembly comprises a first rotating disc, a photosensitive resistor fixed on said first rotating disc, a first casing wrapping said photosensitive resistor and a first brush, said first casing and said first rotating disc are fixedly arranged, said first brush comprises a first brush handle and a first brush bristle group, said first brush handle and said first brush bristle group are fixedly arranged, one end of said first brush bristle group is fixed on said first brush handle, the other end of said first brush bristle group abuts against said first casing, a first round hole is formed on the bottom surface of said casing, said first rotating disc is embedded in said first round hole, said casing is provided with a first motor, said first motor is located inside said casing and is fixedly arranged with said first rotating disc; the light source subassembly includes the second carousel, fixes lamp body, parcel on the second carousel the second shell and the second brush of lamp body, the second shell with the second carousel is fixed arrangement, the second brush includes second brush holder and second brush hair group, the second brush holder with the casing is fixed arrangement, the one end of second brush hair group is fixed on the second brush holder, the other end butt the second shell, the bottom surface of casing forms the second round hole, the embedding of second carousel the second round hole, the casing is equipped with the second motor, the second motor is in inside the casing, and with the second carousel is fixed arrangement.

3. An automatic monitoring device for concrete surface height of cast-in-place pile as claimed in claim 2, wherein said housing is provided with a spherical mesh screen, said mesh screen comprises a first arc plate, a second arc plate and a grid plate, said first arc plate and said second arc plate are fixed on the bottom surface of said housing respectively and are symmetrically arranged, said first arc plate semi-surrounds said photosensitive sensor assembly, said second arc plate semi-surrounds said light source assembly, one side of said grid plate is fixedly arranged with said first arc plate, the other side of said grid plate is fixedly arranged with said second arc plate, said grid plate forms a plurality of meshes.

4. An apparatus for automatically monitoring the level of a concrete surface in an injection pile as claimed in claim 3, wherein the bottom surface of the housing is downwardly convex to form a weight ring wall, the weight ring wall surrounds the mesh screen and is circumferentially disposed, the weight ring wall has an outwardly facing outer surface, the outer surface of the weight ring wall has a plurality of through holes, the plurality of through holes are circumferentially spaced along the outer surface of the weight ring wall, the weight ring wall has a downwardly facing lower surface, and the lower surface of the weight ring wall is inclined upwardly in a radial direction away from the outer surface of the weight ring wall.

5. The automatic monitoring device for the concrete surface height of a cast-in-place pile according to claim 4, wherein the digital display control module comprises a display screen for displaying the depth position of the monitoring probe, an indicator light for alarming and reminding, a control element and a port, one end of the cable is embedded into the port and movably connected with the port, the control element is electrically connected with the display screen, the indicator light and the cable respectively, and when the cable is embedded into the port, the control element is electrically connected with the lamp body, the photoresistor, the first motor and the second motor through the cable.

6. An automatic monitoring device for the concrete surface height of a cast-in-place pile as claimed in claim 5, wherein said digital display control module is fixed on a support, said support comprises a base and a rotating wheel, said base has an upward upper end face, said upper end face of said base is recessed downward to form a rotating wheel groove, said rotating wheel is located in said rotating wheel groove, said rotating wheel groove has two side faces arranged in an opposite direction, two ends of said rotating wheel are respectively embedded into two side faces of said rotating wheel groove, and said rotating wheel is rotatably connected with said rotating wheel groove, said rotating wheel has a hook, one end of said cable has a buckle, when one end of said cable is disconnected with said port, said buckle is fastened on said hook, said rotating wheel is rotated, and said cable is wound or unwound on said rotating wheel.

7. An apparatus for automatically monitoring the height of a concrete surface of a cast-in-place pile according to claim 6, wherein the outer surface of the wheel is recessed inward in a radial direction to form a threaded groove, the width of the threaded groove is greater than the diameter of the cable, the threaded groove is spirally wound from one end of the wheel to the other end of the wheel, the cable is embedded in the threaded groove and uniformly wound on the wheel when the wheel is rotated to wind the cable, and the cable is separated from the threaded groove and the monitoring probe is lowered in the cast-in-place pile hole when the wheel is rotated to unwind the cable.

8. An apparatus for automatically monitoring the height of a concrete surface of a cast-in-place pile as claimed in claim 7, wherein a plurality of protrusions are formed on the outer surface of the rotating wheel, and a fastening member is respectively disposed on two side surfaces of the rotating wheel groove, and when the rotating wheel rotates to make the monitoring probe at a predetermined height, the fastening member fastens into one of the protrusions, so that the rotating wheel and the rotating wheel groove are in a relatively fixed arrangement.

9. An apparatus according to claim 8, wherein the base of the support extends in a direction toward the hole to form a support plate, the support plate is partially suspended above the hole, the support plate is provided with a pulley, and the cable extends from the pulley to the hole via the pulley.

10. An automatic monitoring device for the level of a concrete surface of a cast-in-place pile according to any one of claims 2 to 5, wherein the first motor and the second motor are externally wrapped with a waterproof resin material.

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