A concrete pouring floating ball elevation measuring system and method

Abstract

The present application relates to pile construction technology field, concretely for a kind of concrete pouring float ball elevation measurement system and method, including installation riser, the installation riser one side is fixedly connected with weighing instrument, the weighing instrument lower side is equipped with storage cover, the storage cover inboard is equipped with float ball, the storage cover inboard is equipped with scraping mechanism, the float ball upper end is fixedly connected with traction rope, the traction rope upper end extends out of storage cover, and after passing through guide mechanism, it is wound on the outer side of winding mechanism.The present application needs to be lifted when measuring is completed float ball, the scraper in scraping mechanism will be moved and contact with traction rope, at this time along with the movement of traction rope, scraper will remove the impurities on the surface of traction rope, when float ball enters into storage cover, scraping mechanism will move along the surface of float ball, the impurities on the surface of float ball are scraped, after measurement, the impurities adhered to the surface of float ball and traction rope are removed.

Description

Technical Field

[0001] This invention relates to the field of pile foundation construction technology, specifically to a system and method for measuring the elevation of a float in concrete pouring. Background Technology

[0002] For example, Chinese patent CN223620965U discloses a device for measuring the concrete elevation of ultra-long pile foundations, including a measuring box. The measuring box contains a measuring mechanism, and a controller is installed on the outer wall of the measuring box. A battery is installed inside the measuring box and above the measuring mechanism. The measuring mechanism includes a drive shaft rotatably connected inside the measuring box. Connecting plates are fixedly connected to the top, bottom, and both sides of the drive shaft, and a winding sleeve is slidably connected to the outer wall of the connecting plate.

[0003] However, the above-mentioned solutions have the following shortcomings: During the lowering and raising of the buoy, its outer surface and the traction rope will come into contact with the mud and laitance successively. The cementitious material in the slurry will adhere to the traction rope and the outer surface of the buoy. After the adhered slurry dries, it forms hard lumps, which will change the weight and surface roughness of the buoy and affect the buoy's buoyancy response characteristics in subsequent measurements. After the slurry adhering to the surface of the traction rope dries, it forms a hard shell or particles. When the traction rope is wound up, these hard impurities will be squeezed between the rope layers, causing uneven winding. To address this, we have developed a concrete-cast buoy elevation measurement system and method. Summary of the Invention

[0004] The purpose of this invention is to provide a system and method for measuring the elevation of a float in concrete pouring, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A concrete pouring float elevation measurement system includes a mounting plate. A weighing instrument is fixedly connected to one side of the mounting plate. A storage cover is provided on the lower side of the weighing instrument. A float is located inside the storage cover. A scraping mechanism is provided inside the storage cover. A traction rope is fixedly connected to the upper end of the float. The upper end of the traction rope extends out of the storage cover, passes through a guide mechanism, and then winds around the outside of a winding mechanism. The guide mechanism is connected to the weighing end of the weighing instrument. The winding mechanism is connected to the outside of the mounting plate. A protective mechanism is provided inside the storage cover. The scraping mechanism scrapes away impurities adhering to the surface of the float. Then, the scraping mechanism drives the protective mechanism to extend and protect the float. A shell is installed on one side of the mounting plate.

[0006] Preferably, the scraping mechanism includes two arc-shaped rods, both ends of which are movably connected to the inside of the storage cover. An elastic scraper is fixedly connected to the end of the arc-shaped rod near the float. One side of the arc-shaped rod is inclined. One end of the arc-shaped rod passes through the storage cover and is fixedly connected to a gear. The two gears mesh with each other. A first motor is fixedly connected to the outside of the storage cover. The output end of the first motor is fixedly connected to a gear. A connection hole is opened on the side of the arc-shaped rod near the traction rope. The traction rope is disposed between the two connection holes.

[0007] Preferably, the guiding mechanism includes a first U-shaped plate, which is fixedly connected to the weighing end of the weighing instrument. Two guide wheels are provided on the inner side of the first U-shaped plate, and the guide wheels are movably connected to the inner side of a second U-shaped plate. Two T-shaped rods are fixedly connected to one end of the second U-shaped plate, and the T-shaped rods are movably connected to the inside of the first U-shaped plate.

[0008] Preferably, a first spring is sleeved on the outside of the T-shaped rod. One end of the first spring is fixedly connected to the second U-shaped plate, and the other end is fixedly connected to the first U-shaped plate. The upper end of the traction rope extends out of the storage cover and passes through two guide wheels. A rotary displacement measuring sensor is fixedly connected to the outside of the second U-shaped plate. The measuring end of the rotary displacement measuring sensor passes through the second U-shaped plate and is fixedly connected to the corresponding guide wheel.

[0009] Preferably, the winding mechanism includes a winding wheel, which is fixedly connected to the output end of a second motor, and the second motor is fixedly connected to the outside of the mounting plate. A traction rope is wound around the winding wheel.

[0010] Preferably, a support wheel is movably connected to one side of the mounting plate, the outer side of the support wheel is in contact with the traction rope, a battery and a PLC processor are fixedly connected to the outer side of the mounting plate, and a touch screen is fixedly connected to the outer side of the housing.

[0011] Preferably, the protective mechanism includes two protective covers, which are movably connected to the sliding cavity, which is opened inside the storage cover. A first magnetic block is fixedly connected to one end of the protective cover and inside the sliding cavity, and a second magnetic block is fixedly connected to one side of the protective cover and the arc-shaped rod.

[0012] Preferably, a scraper is slidably connected inside the arc-shaped rod, and a T-shaped guide rod is fixedly connected to one end of the scraper. The T-shaped guide rod is slidably connected inside a guide cavity, which is located inside the arc-shaped rod. A support spring is sleeved on the outside of the T-shaped guide rod, with one end of the support spring fixedly connected to the guide cavity and the other end fixedly connected to the T-shaped guide rod. A connecting rod is fixedly connected to the end of the T-shaped guide rod away from the scraper, and the connecting rod is slidably connected inside an insertion hole. Two telescopic cylinders are fixedly connected inside the storage cover, and a connecting plate is fixedly connected to the output end of each telescopic cylinder. Two insertion rods are fixedly connected to the end of the connecting plate away from the telescopic cylinder.

[0013] Furthermore, to achieve the above objectives, the present invention also provides a method for measuring the elevation of a float in concrete pouring, for use in the aforementioned float elevation measurement system, comprising: S1. The second motor drives the winding wheel to rotate, and the float moves downward. Under the action of the float's gravity, the weighing instrument measures the weight of the float. During the descent, the float will pass through the mud layer and the laitance layer and fall onto the concrete layer. When the float falls onto the concrete layer, it will stop moving. The weight measured by the weighing instrument will decrease. The length of the released traction rope is calculated by the displacement generated by the rotary displacement measuring sensor driven by a guide wheel, thereby obtaining the elevation of the concrete layer. S2. When the measurement is completed and the float needs to be pulled upward, the two telescopic cylinders located inside the storage cover will be activated. The insertion rod is inserted into the insertion hole to push the connecting rod to move. The T-shaped guide rod moves so that the scraper contacts the traction rope. When the winding wheel winds up the traction rope, the two scrapers will scrape off the impurities adhering to the surface of the traction rope. When the float enters the storage cover, the telescopic cylinder drives the insertion rod to move out of the insertion hole. Under the elastic force of the support spring, the scraper moves outward and no longer contacts the traction rope. S3. The first motor drives the gear to rotate, which in turn drives another gear to rotate. At this time, the two arc-shaped rods rotate along the surface of the float. The arc-shaped rods drive the elastic scraper to scrape away impurities on the surface of the float. When the arc-shaped rods move to the position of the second magnetic block of the protective cover, the protective cover will move out of the sliding cavity as the arc-shaped rods move. When the two arc-shaped rods move to the lower end of the float and come into contact with each other, the two protective covers come into contact together. The two protective covers protect the float and prevent it from being damaged due to impact from external objects or other reasons.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: when the float needs to be lifted after the measurement is completed, the scraper located in the scraping mechanism will move and come into contact with the traction rope. At this time, as the traction rope moves, the scraper will scrape off the impurities on the surface of the traction rope. After the float enters the storage cover, the scraping mechanism will move along the surface of the float to scrape off the impurities on the surface of the float. Then the scraping mechanism drives the protective mechanism to extend and protect the float, thereby removing the impurities adhering to the surface of the float and the traction rope after the measurement. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention with the mounting plate separated from the outer shell; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the float in its stored state according to the present invention; Figure 4 This is a three-dimensional structural diagram of the float and the storage cover of the present invention in a separated state; Figure 5 This is a three-dimensional cross-sectional view of the storage cover of the present invention; Figure 6 This is a three-dimensional cross-sectional view of the connection between the float and the storage cover of the present invention; Figure 7 This is a three-dimensional structural diagram illustrating the connection between the arc-shaped rod and the gear in this invention; Figure 8 This is a three-dimensional cross-sectional view of the connection between the T-shaped guide rod and the guide cavity of the present invention; Figure 9 This is a three-dimensional structural diagram illustrating the connection relationship between the winding wheel and the second motor of the present invention; Figure 10 This is a three-dimensional structural diagram of the protective cover of the present invention in its closed state; Figure 11 This is a three-dimensional cross-sectional view of the protective cover of the present invention in its closed state; Figure 12 This is a three-dimensional structural diagram showing the relationship between the closed state of the protective cover and the position of the arc-shaped rod of the present invention; Figure 13 This is a three-dimensional structural diagram illustrating the connection between the guide wheel and the traction rope of the present invention.

[0016] In the diagram: 1. Outer shell; 2. Touch screen; 3. Rewinding reel; 4. Float; 5. Storage cover; 6. Mounting plate; 7. Weighing instrument; 8. PLC processor; 9. Battery; 10. Second motor; 11. Support wheel; 12. Rotary displacement sensor; 13. Traction rope; 14. First U-shaped plate; 15. T-shaped rod; 16. Second U-shaped plate; 17. Guide wheel; 18. First spring; 19. Arc rod; 20. Protective cover; 21. Gear; 22. First motor; 23. Connecting hole; 24. Elastic scraper; 25. Guide cavity; 26. Connecting rod; 27. Insertion hole; 28. T-shaped guide rod; 29. ​​Support spring; 30. Scraper; 31. Insertion rod; 32. Connecting plate; 33. Telescopic cylinder; 34. First magnetic block; 35. Sliding cavity; 36. Second magnetic block. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-13 The present invention provides a technical solution: Example 1: A concrete pouring float elevation measurement system includes a mounting plate 6, with a support wheel 11 movably connected to one side of the mounting plate 6. The outer side of the support wheel 11 contacts a traction rope 13, and the support wheel 11 is used to support the traction rope 13. A battery 9 and a PLC processor 8 are also fixedly connected to the outer side of the mounting plate 6. The battery 9 is used to power the components, and the PLC processor 8 is used to control the corresponding components. A touch screen 2 is fixedly connected to the outer side of the housing 1. The measurement data can be viewed through the touch screen 2, and the start and stop of the device can be controlled. A weighing instrument 7 is fixedly connected to one side of the mounting plate 6. The weighing instrument 7 can be selected with appropriate size and model during use.

[0019] The weighing instrument 7 has a storage cover 5 on its lower side, a float 4 inside the storage cover 5, and a scraping mechanism inside the storage cover 5. A traction rope 13 is fixedly connected to the upper end of the float 4. The upper end of the traction rope 13 extends out of the storage cover 5, passes through the guide mechanism, and then winds around the outside of the winding mechanism. The guide mechanism is connected to the weighing end of the weighing instrument 7, and the winding mechanism is connected to the outside of the mounting plate 6. A protective mechanism is provided inside the storage cover 5. The scraping mechanism scrapes away the impurities adhering to the surface of the float 4. Then, the scraping mechanism drives the protective mechanism to extend and protect the float 4. A shell 1 is installed on one side of the mounting plate 6.

[0020] The protective mechanism includes two protective covers 20, which are movably connected to the sliding cavity 35. A rotating shaft is fixedly connected to the outside of the protective cover 20, allowing the protective cover 20 to rotate within the sliding cavity 35. The sliding cavity 35 is located inside the storage cover 5. A first magnetic block 34 is fixedly connected to one end of the protective cover 20 and inside the sliding cavity 35. A second magnetic block 36 is fixedly connected to one side of the protective cover 20 and the arc-shaped rod 19. One end of the second magnetic block 36 is a magnetic surface, and the other end is a non-magnetic conventional surface. This arrangement ensures that when the protective cover 20 is removed from the sliding cavity 35, the second magnetic blocks 36 connected to the outside of the two protective covers 20 will not repel each other when the opposite ends of the two protective covers 20 come into contact.

[0021] Example 2: Based on Example 1, in order to remove the impurities adhering to the surface of the float 4 after measurement, the scraping mechanism includes two arc-shaped rods 19. Both ends of the arc-shaped rods 19 are movably connected to the inside of the storage cover 5. An elastic scraper 24 is fixedly connected to one end of the arc-shaped rod 19 near the float 4. One side of the arc-shaped rod 19 is inclined. Through the elastic extension and contraction of the elastic scraper 24, the elastic scraper 24 can always be in contact with the surface of the float 4, so that when the arc-shaped rod 19 rotates, the elastic scraper 24 scrapes away the impurities on the surface of the float 4.

[0022] One end of the arc-shaped rod 19 passes through the storage cover 5 and is fixedly connected to the gear 21. The two gears 21 mesh with each other. A first motor 22 is fixedly connected to the outside of the storage cover 5. The output end of the first motor 22 is fixedly connected to one of the gears 21. A connection hole 23 is opened on the side of the arc-shaped rod 19 near the traction rope 13. The traction rope 13 is positioned between the two connection holes 23. Figure 12 As shown, the rotating shaft connected to the outside of the protective cover 20 is coaxial with the arc rod 19. The rotating shaft connected to the outside of the protective cover 20 is positioned away from the gear 21 by the arc rod 19. After the first motor 22 is started, it drives the gear 21 connected to its output end to rotate. When the gear 21 rotates, it drives another gear 21 to rotate. At this time, the two arc rods 19 rotate downward along the surface of the float 4. The arc rods 19 drive the elastic scraper 24 to scrape away the impurities on the surface of the float 4.

[0023] The guiding mechanism includes a first U-shaped plate 14, which is fixedly connected to the weighing end of the weighing instrument 7. Two guide wheels 17 are provided on the inner side of the first U-shaped plate 14, and the guide wheels 17 are movably connected to the inner side of a second U-shaped plate 16. Two T-shaped rods 15 are fixedly connected to one end of the second U-shaped plate 16, and the T-shaped rods 15 are movably connected inside the first U-shaped plate 14. When the float 4 is lowered, the weight of the float 4 itself will pull on the traction rope 13. Figure 13As shown, the traction rope 13 passes through two guide wheels 17 and also goes around one guide wheel 17. At this time, when the float 4 pulls the traction rope 13, the corresponding guide wheel 17 will cause the weighing instrument 7 to measure the weight of the float 4.

[0024] A first spring 18 is sleeved on the outside of the T-shaped rod 15. One end of the first spring 18 is fixedly connected to the second U-shaped plate 16, and the other end is fixedly connected to the first U-shaped plate 14. Under the elastic force of the first spring 18, the two guide wheels 17 will always be in contact with the traction rope 13. The upper end of the traction rope 13 extends out of the storage cover 5 and passes through the two guide wheels 17. A rotary displacement measuring sensor 12 is fixedly connected to the outside of one of the second U-shaped plates 16. The measuring end of the rotary displacement measuring sensor 12 passes through the second U-shaped plate 16 and is fixedly connected to the corresponding guide wheel 17. When the traction rope 13 moves downward, the two guide wheels 17 will rotate. One of the guide wheels 17 will drive the rotary displacement measuring sensor 12 to rotate, thereby measuring the extension length of the traction rope 13.

[0025] The winding mechanism includes a winding wheel 3, which is fixedly connected to the output end of a second motor 10. The second motor 10 is fixedly connected to the outside of the mounting plate 6. A traction rope 13 is wound around the winding wheel 3. A scraper 30 is slidably connected inside an arc-shaped rod 19. A T-shaped guide rod 28 is fixedly connected to one end of the scraper 30. The T-shaped guide rod 28 is slidably connected inside a guide cavity 25, which is located inside the arc-shaped rod 19. A support spring 29 is sleeved on the outside of the T-shaped guide rod 28. One end of the support spring 29 is fixedly connected to the guide cavity 25, and the other end is fixedly connected to the T-shaped guide rod 28. A connecting rod 26 is fixedly connected to the end of the T-shaped guide rod 28 away from the scraper 30. The connecting rod 26 is slidably connected inside an insertion hole 27. Two telescopic cylinders 33 are fixedly connected inside the storage cover 5. A connecting plate 32 is fixedly connected to the output end of the telescopic cylinder 33.

[0026] Two insert rods 31 are fixedly connected to the end of the connecting plate 32 away from the telescopic cylinder 33. When the telescopic cylinder 33 is started, it drives the connecting plate 32 to move. When the connecting plate 32 moves, it drives the two insert rods 31 to move. When the insert rods 31 are inserted into the insertion hole 27, they push the connecting rod 26 to move. The movement of the connecting rod 26 drives the T-shaped guide rod 28 to move. The movement of the T-shaped guide rod 28 makes the scraper 30 contact the traction rope 13. At this time, when the winding wheel 3 rotates to wind the traction rope 13, the float 4 will move upward. When the traction rope 13 moves, the two scrapers 30 will scrape off the impurities adhering to the surface of the traction rope 13.

[0027] Furthermore, to achieve the above objectives, the present invention also provides a method for measuring the elevation of a float in concrete pouring, for use in the aforementioned float elevation measurement system, comprising: S1. The second motor 10 drives the winding wheel 3 to rotate. At this time, the float 4 moves downward. Under the gravity of the float 4, the weighing instrument 7 measures the weight of the float 4. During the descent, the float 4 will pass through the mud layer and the laitance layer and fall onto the concrete layer. When the float 4 falls onto the concrete layer, the float 4 will no longer move. The weight measured by the weighing instrument 7 will become smaller. The length of the released traction rope 13 is calculated by the displacement generated by the rotary displacement measuring sensor 12 driven by a guide wheel 17, thereby obtaining the elevation of the concrete layer. S2. When the measurement is completed and the float 4 needs to be pulled upward, the two telescopic cylinders 33 located inside the storage cover 5 will be activated. The insertion rod 31 will be inserted into the insertion hole 27 to push the connecting rod 26 to move. The T-shaped guide rod 28 will move so that the scraper 30 will contact the traction rope 13. When the winding wheel 3 winds up the traction rope 13, the two scrapers 30 will scrape off the impurities adhering to the surface of the traction rope 13. When the float 4 enters the storage cover 5, the telescopic cylinder 33 will drive the insertion rod 31 to move out of the insertion hole 27. Under the elastic force of the support spring 29, the scraper 30 will move outward and no longer contact the traction rope 13. S3. The first motor 22 drives the gear 21 to rotate. When the gear 21 rotates, it drives another gear 21 to rotate. At this time, the two arc rods 19 rotate along the surface of the float 4. The arc rods 19 drive the elastic scraper 24 to scrape off the impurities on the surface of the float 4. When the arc rods 19 move to the position of the second magnetic block 36 of the protective cover 20, the protective cover 20 will move out of the sliding cavity 35 as the arc rods 19 move. When the two arc rods 19 move to the lower end of the float 4 and contact each other, the two protective covers 20 are in contact with each other. The two protective covers 20 protect the float 4 and prevent the float 4 from being damaged due to impact from external objects or other reasons.

[0028] Working principle: During use, the mounting plate 6 and the outer casing 1 are placed on the concrete pile foundation. The second motor 10 drives the winding wheel 3 to rotate. The rotation of the winding wheel 3 cancels the winding of the traction rope 13. At this time, the float 4 will move downward. When the float 4 moves downward, the traction rope 13 will drive the two guide wheels 17 to rotate. Under the action of the weight of the float 4, the weighing instrument 7 will measure the weight of the float 4. During the descent, the float 4 will pass through the mud layer and the laitance layer and fall onto the concrete layer. When the float 4 falls onto the concrete layer, as the winding wheel 3 continues to rotate, the float 4 will no longer move. The weight measured by the weighing instrument 7 will decrease. The length of the released traction rope 13 is calculated by the displacement generated by the rotary displacement measuring sensor 12 driven by one of the guide wheels 17, thereby obtaining the elevation of the concrete layer. When the measurement is completed and the float 4 needs to be pulled upwards, the two telescopic cylinders 33 located inside the storage cover 5 will be activated. When the telescopic cylinders 33 are activated, they drive the connecting plate 32 to move. When the connecting plate 32 moves, it drives the two insert rods 31 to move. When the insert rods 31 are inserted into the insertion holes 27, they push the connecting rod 26 to move. The movement of the connecting rod 26 drives the T-shaped guide rod 28 to move. The movement of the T-shaped guide rod 28 makes the scraper 30 contact the traction rope 13. At this time, when the winding wheel 3 rotates, it affects the traction rope 1. 3. When winding, the float 4 will move upward. When the traction rope 13 moves, the two scrapers 30 will scrape off the impurities adhering to the surface of the traction rope 13. When the float 4 enters the storage cover 5, and the upper end of the float 4 contacts the elastic scraper 24 at the lower end of the arc rod 19, the second motor 10 is in a self-locking state. The telescopic cylinder 33 drives the insertion rod 31 to move out of the insertion hole 27. Under the elastic force of the support spring 29, the scraper 30 moves outward and no longer contacts the surface of the traction rope 13. After the first motor 22 is started, it drives the gear 21 connected to its output end to rotate. When the gear 21 rotates, it drives another gear 21 to rotate. At this time, the two arc-shaped rods 19 rotate downward along the surface of the float 4. The arc-shaped rods 19 drive the elastic scraper 24 to scrape away impurities on the surface of the float 4. When the second magnetic block 36 on the outside of the arc-shaped rod 19 moves to the position of the second magnetic block 36 of the protective cover 20, the protective cover 20 will move out of the sliding cavity 35 as the arc-shaped rods 19 move. When the two arc-shaped rods 19 move to the lower end of the float 4 and contact each other, the two protective covers 20 contact each other. The float 4 is protected to prevent damage caused by impact from external objects or other reasons. When the float 4 needs to be used for measurement again, the first motor 22 rotates in the opposite direction, causing the two arc rods 19 to rotate to the upper side of the float 4. Under the attraction of the second magnetic block 36, the arc rods 19 move and drive the protective cover 20 back into the sliding cavity 35. When the first magnetic block 34 at one end of the protective cover 20 contacts the first magnetic block 34 in the sliding cavity 35, the arc rods 19 will no longer drive the protective cover 20 to move. Under the mutual attraction of the two first magnetic blocks 34, the protective cover 20 is limited in the sliding cavity 35.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete pouring float elevation measurement system, comprising an installation vertical plate, characterized in that: A weighing instrument is fixedly connected to one side of the mounting plate. A storage cover is provided on the lower side of the weighing instrument. A float is provided inside the storage cover. A scraping mechanism is provided inside the storage cover. A traction rope is fixedly connected to the upper end of the float. The upper end of the traction rope extends out of the storage cover, passes through the guide mechanism, and then winds around the outside of the winding mechanism. The guide mechanism is connected to the weighing end of the weighing instrument. The winding mechanism is connected to the outside of the mounting plate. A protective mechanism is provided inside the storage cover. The scraping mechanism scrapes off impurities adhering to the surface of the float. Then, the scraping mechanism drives the protective mechanism to extend and protect the float. A shell is installed on one side of the mounting plate. The scraping mechanism includes two arc-shaped rods, both ends of which are movably connected to the inside of the storage cover. An elastic scraper is fixedly connected to the end of the arc-shaped rod near the float. One side of the arc-shaped rod is inclined. One end of the arc-shaped rod passes through the storage cover and is fixedly connected to a gear. The two gears mesh with each other. A first motor is fixedly connected to the outside of the storage cover. The output end of the first motor is fixedly connected to a gear. A connection hole is opened on the side of the arc-shaped rod near the traction rope. The traction rope is disposed between the two connection holes. The protective mechanism includes two protective covers, which are movably connected to the sliding cavity. The sliding cavity is opened inside the storage cover. A first magnetic block is fixedly connected to one end of the protective cover and inside the sliding cavity. A second magnetic block is fixedly connected to one side of the protective cover and the arc-shaped rod. A scraper is slidably connected inside the arc-shaped rod. A T-shaped guide rod is fixedly connected to one end of the scraper. The T-shaped guide rod is slidably connected to a guide cavity, which is located inside the arc-shaped rod. A support spring is sleeved on the outside of the T-shaped guide rod. One end of the support spring is fixedly connected to the guide cavity, and the other end is fixedly connected to the T-shaped guide rod. A connecting rod is fixedly connected to the end of the T-shaped guide rod away from the scraper. The connecting rod is slidably connected to an insertion hole. Two telescopic cylinders are fixedly connected inside the storage cover. A connecting plate is fixedly connected to the output end of the telescopic cylinder. Two insertion rods are fixedly connected to the end of the connecting plate away from the telescopic cylinder.

2. The concrete pouring float elevation measurement system according to claim 1, characterized in that: The guiding mechanism includes a first U-shaped plate, which is fixedly connected to the weighing end of the weighing instrument. Two guide wheels are provided on the inner side of the first U-shaped plate, and the guide wheels are movably connected to the inner side of a second U-shaped plate. Two T-shaped rods are fixedly connected to one end of the second U-shaped plate, and the T-shaped rods are movably connected to the inside of the first U-shaped plate.

3. The concrete pouring float elevation measurement system according to claim 2, characterized in that: A first spring is sleeved on the outside of the T-shaped rod. One end of the first spring is fixedly connected to the second U-shaped plate, and the other end is fixedly connected to the first U-shaped plate. The upper end of the traction rope extends out of the storage cover and passes through two guide wheels. A rotary displacement measuring sensor is fixedly connected to the outside of the second U-shaped plate. The measuring end of the rotary displacement measuring sensor passes through the second U-shaped plate and is fixedly connected to the corresponding guide wheel.

4. The concrete pouring float elevation measurement system according to claim 1, characterized in that: The winding mechanism includes a winding wheel, which is fixedly connected to the output end of a second motor. The second motor is fixedly connected to the outside of the mounting plate, and a traction rope is wound around the winding wheel.

5. The concrete pouring float elevation measurement system according to claim 1, characterized in that: A support wheel is movably connected to one side of the mounting plate. The outer side of the support wheel is in contact with the traction rope. A battery and a PLC processor are also fixedly connected to the outer side of the mounting plate. A touch screen is fixedly connected to the outer side of the housing.

6. A method for measuring the elevation of a float, used in the concrete pouring float elevation measuring system according to any one of claims 1-5, characterized in that, include: S1. The second motor drives the winding wheel to rotate, and the float moves downward. Under the action of the float's gravity, the weighing instrument measures the weight of the float. During the descent, the float will pass through the mud layer and the laitance layer and fall onto the concrete layer. When the float falls onto the concrete layer, it will stop moving. The weight measured by the weighing instrument will decrease. The length of the released traction rope is calculated by the displacement generated by the rotary displacement measuring sensor driven by a guide wheel, thereby obtaining the elevation of the concrete layer. S2. When the measurement is completed and the float needs to be pulled upward, the two telescopic cylinders located inside the storage cover will be activated. The insertion rod is inserted into the insertion hole to push the connecting rod to move. The T-shaped guide rod moves so that the scraper contacts the traction rope. When the winding wheel winds up the traction rope, the two scrapers will scrape off the impurities adhering to the surface of the traction rope. When the float enters the storage cover, the telescopic cylinder drives the insertion rod to move out of the insertion hole. Under the elastic force of the support spring, the scraper moves outward and no longer contacts the traction rope. S3. The first motor drives the gear to rotate, which in turn drives another gear to rotate. At this time, the two arc-shaped rods rotate along the surface of the float. The arc-shaped rods drive the elastic scraper to scrape away impurities on the surface of the float. When the arc-shaped rods move to the position of the second magnetic block of the protective cover, the protective cover will move out of the sliding cavity as the arc-shaped rods move. When the two arc-shaped rods move to the lower end of the float and come into contact with each other, the two protective covers come into contact together. The two protective covers protect the float and prevent it from being damaged due to impact from external objects or other reasons.

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