Concrete pouring control tool

Abstract

The application relates to a concrete pouring control tool, and belongs to the technical field of concrete pouring. The tool comprises a plug rod arranged in a formwork, the length direction of the plug rod is parallel to the height direction of the formwork, a scale is arranged on the plug rod, a laser range finder is arranged on the scale, the scale is rotationally arranged on the plug rod, and the tool further comprises a first fixing piece for fixing the scale. A scraper is slidingly arranged on the plug rod, the scraper slides along the length direction of the plug rod, the scraper is located above a steel reinforcement framework in the formwork, and the tool further comprises a first driving piece for driving the scraper to slide and enabling the bottom of the scraper to be supported on the liquid surface of the concrete. The scraper is rotationally arranged on the plug rod, the rotation axis of the scraper is parallel to the length direction of the plug rod, the tool further comprises a second driving piece for driving the scraper to rotate and smoothing the top surface of the concrete, and the length of the scraper is greater than the length from the laser range finder to the plug rod. The application has the effect of facilitating the measurement of the related thickness of the concrete.

Description

Technical Field

[0001] This application relates to the field of concrete pouring technology, and in particular to a concrete pouring control tool. Background Technology

[0002] Concrete pouring refers to the process of pouring concrete into a mold until it is plasticized. In civil engineering, concrete and other materials are poured into a mold to form a predetermined shape.

[0003] During concrete pouring, it is necessary to control the thickness of the concrete pour and the thickness of the concrete cover for reinforcing bars to ensure the quality of the pouring. The concrete cover is the concrete between the outer edge of the reinforcing bars and the surface of the structural member. If the concrete cover is too thin, the bond strength between the thin concrete and the reinforcing bars will be weakened, which will affect the structural resistance. If the cover is too thick, it will reduce the flexural capacity, crack control performance and stiffness. In order to ensure a good bond between the reinforcing bars and the concrete, so that the reinforcing bars and the concrete share the load, protect the reinforcing bars from the corrosion of the external environment, improve the service performance of reinforced concrete structures and extend their service life, it is of great significance to control and measure the concrete cover.

[0004] However, existing methods for detecting reinforced concrete protective layers include destructive testing, electromagnetic induction testing with rebar detectors or concrete radar instruments. These are all post-construction testing methods, and it is difficult to handle cases where the protective layer thickness does not meet the requirements, sometimes even requiring rework. Summary of the Invention

[0005] To facilitate the measurement of concrete thickness, this application provides a concrete pouring control fixture.

[0006] This application provides a concrete pouring control fixture, which adopts the following technical solution:

[0007] A concrete pouring control fixture includes an insert rod disposed within a template, the length direction of the insert rod being parallel to the height direction of the template. A scale is mounted on the insert rod, the length direction of the scale being perpendicular to the length direction of the insert rod. A laser rangefinder is mounted on the scale, the emitting end of the laser rangefinder facing the ground. The scale is rotatably mounted on the insert rod, the axis of rotation of the scale being parallel to the length direction of the insert rod. The control fixture also includes a first fixing member for fixing the scale. A scraper is slidably disposed on the insert rod, the scraper sliding along the length direction of the insert rod and positioned above the reinforcing steel skeleton within the template. The control fixture also includes a first driving member for driving the scraper to slide and for the bottom of the scraper to rest on the concrete surface. The scraper is rotatably mounted on the insert rod, the axis of rotation of the scraper being parallel to the length direction of the insert rod. The control fixture also includes a second driving member for driving the scraper to rotate and smooth the top surface of the concrete. The length of the scraper is greater than the distance between the laser rangefinder and the insert rod.

[0008] Optionally, a connecting rope is provided on the scale, and the laser rangefinder is attached to the free end of the connecting rope.

[0009] Optionally, the first driving component includes a sleeve fitted onto the insert rod, the scraper is disposed on the sleeve, and the first driving component further includes a float disposed at the bottom of the sleeve, the float being located below the scraper, the float being used to drive the sleeve to gradually float upward when the concrete liquid level rises; the scraper is slidably disposed on the outer wall of the sleeve, the scraper sliding along the axial direction of the sleeve, and the sleeve is provided with an adjusting component for adjusting the distance between the bottom of the scraper and the concrete liquid level so that the bottom of the scraper is supported on the concrete liquid level.

[0010] Optionally, the adjusting component includes a lead screw rotatably mounted on the outer wall of the sleeve, the length direction of the lead screw being parallel to the axial direction of the sleeve, and a scraper threadedly connected to the lead screw, the length direction of the scraper being perpendicular to the length direction of the lead screw.

[0011] Optionally, the second driving component includes an installation cylinder sleeved on the insertion rod and a driving wheel rotatably disposed on the outer wall of the installation cylinder. The rotation axis of the driving wheel is parallel to the axial direction of the installation cylinder. The sleeve is sleeved on the outer wall of the installation cylinder, and the inner wall of the sleeve abuts against the peripheral wall of the driving wheel. The second driving component also includes a first motor disposed on the installation cylinder for driving the driving wheel to rotate.

[0012] Optionally, the lower surface of the scale is provided with a mounting groove, the length direction of the mounting groove is parallel to the length direction of the scale, a buffer is provided in the mounting groove, and the connecting rope is attached to the buffer. The buffer is used to reduce the shaking of the laser rangefinder when the rod is impacted by flowing concrete.

[0013] Optionally, the buffer includes a mounting rod disposed in a mounting groove, the connecting rope being attached to the mounting rod, and a first magnet being disposed at both ends of the mounting rod. Multiple first magnets are disposed in this configuration, evenly distributed along the circumference of the mounting rod. A mounting ring is disposed within the mounting groove, located on both sides of the mounting rod. The first magnets are located within the mounting ring, and multiple second magnets are disposed within the mounting ring, evenly distributed along the inner ring of the mounting ring. Each second magnet corresponds one-to-one with a first magnet, and the magnetic poles of the second magnets are opposite to and separated from the corresponding first magnets.

[0014] Optionally, a third magnet is provided on the sidewall of each of the two ends of the mounting rod facing the mounting groove, and a fourth magnet corresponding to the third magnet is provided on each of the two ends of the mounting rod, wherein the magnetic poles of the fourth magnet are opposite to those of the corresponding third magnet.

[0015] Optionally, two scales are provided, and a mounting ring is provided on the insertion rod. The two scales are symmetrically arranged along the axis of the mounting ring.

[0016] Optionally, the end of the scale away from the insertion rod is provided with a mounting hole for the installation rod to be removed, and the scale is detachably provided with an insertion block that is inserted into the mounting hole.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. When pouring concrete for floor slabs, first, the formwork is erected, followed by the construction of a reinforcing steel frame within the formwork. Then, the insert rod is installed inside the formwork, and its length is adjusted to be perpendicular to the ground. Next, the ruler is rotated, causing the laser rangefinder to move so that it is directly aligned with the topmost reinforcing steel bar. The data is recorded (first measurement data). The ruler is then rotated again, aligning the laser rangefinder with the bottom of the formwork (second measurement data). The ruler is then fixed in place using the first fixing device. Concrete is then poured into the formwork, and the concrete level gradually rises. As the level rises, the data from the laser rangefinder is observed (third measurement data). The concrete pouring data is obtained by subtracting the third measurement data from the second measurement data. The concrete cover thickness is obtained by subtracting the first measurement data from the concrete thickness data. During this process, relevant data are monitored during concrete pouring, improving the accuracy of the measurements. Simultaneously, the monitoring process minimizes the impact on the poured concrete.

[0019] 2. During the concrete pouring process, the first driving component drives the scraper to slide along the insert rod, with the bottom surface of the scraper supporting the concrete surface. The second driving component then drives the scraper to rotate, which smooths the concrete surface and improves the accuracy of the test data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a concrete pouring control fixture according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of the insert rod in a concrete pouring control tool according to an embodiment of this application;

[0022] Figure 3 This is a cross-sectional view of the scale and sleeve in a concrete pouring control fixture according to an embodiment of this application;

[0023] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle;

[0024] Figure 5 yes Figure 3 Enlarged schematic diagram of part B;

[0025] Figure 6 yes Figure 3An enlarged schematic diagram of section C.

[0026] Explanation of reference numerals in the attached diagram: 1. Template; 2. Reinforcing steel cage; 3. Insert rod; 4. Ruler; 5. Laser rangefinder; 6. Scraper;

[0027] 7. First driving component; 71. Sleeve; 72. Float; 73. Lead screw;

[0028] 8. Second driving component; 81. Mounting cylinder; 82. Drive wheel; 83. First motor; 84. Mounting cavity;

[0029] 9. Disc; 91. Mounting plate; 92. Turntable; 93. Bolt;

[0030] 10. Connecting rope; 11. Mounting groove; 12. Mounting rod; 13. First magnet; 14. Mounting ring; 15. Second magnet; 16. Third magnet; 17. Fourth magnet; 18. Mounting hole; 19. Insert block. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] This application discloses a concrete pouring control fixture. (Refer to...) Figure 1 and Figure 2 The concrete pouring control fixture includes a rod 3 installed inside the template 1. The cross-section of the rod 3 is rectangular. The length direction of the rod 3 is parallel to the height direction of the template 1. A scale 4 is installed on the rod 3. The length direction of the scale 4 is perpendicular to the length direction of the rod 3. A laser rangefinder 5 is installed on the scale 4. The emitting end of the laser rangefinder 5 faces the ground. The scale 4 is rotatably mounted on the rod 3. The rotation axis of the scale 4 is parallel to the length direction of the rod 3. The control fixture also includes a first fixing member for fixing the scale 4.

[0033] Reference Figure 1 and Figure 2 A scraper 6 is slidably mounted on the insert rod 3. The cross-section of the scraper 6 is rectangular. The scraper 6 slides along the length of the insert rod 3. The scraper 6 is located above the steel reinforcement skeleton 2 inside the template 1. The control fixture also includes a first drive member 7 that drives the scraper 6 to slide and makes the bottom of the scraper 6 bear on the concrete liquid surface.

[0034] Reference Figure 1 and Figure 2 The scraper 6 is rotatably mounted on the insert rod 3, and the rotation axis of the scraper 6 is parallel to the length direction of the insert rod 3. The control fixture also includes a second drive component 8 for driving the scraper 6 to rotate and smoothing the concrete top surface.

[0035] When pouring concrete for floor slabs, the process begins with the following steps: First, formwork 1 is erected, followed by the construction of a reinforcing steel frame 2 within formwork 1. Then, insert rods 3 are installed inside formwork 1, and their length is adjusted to be perpendicular to the ground. Next, a ruler 4 is rotated, causing a laser rangefinder 5 to move and be positioned directly above the top reinforcing steel bar. The data is recorded. The ruler 4 is then rotated again, bringing the laser rangefinder 5 directly above the bottom surface of formwork 1. The ruler 4 is then fixed in place using the first fixing component. Concrete is then poured into formwork 1, and the concrete level gradually rises. As the level rises, the data from the laser rangefinder 5 is observed. The concrete pouring data is obtained by subtracting the third measurement data from the second measurement data. The concrete cover thickness is obtained by subtracting the first measurement data from the concrete thickness data. This process of monitoring relevant data during concrete pouring improves the accuracy of the measurements and reduces the impact on the concrete pouring process.

[0036] Reference Figure 1 and Figure 2 To facilitate scraping the concrete directly below the laser rangefinder 5 by the scraper 6, the length of the scraper 6 is greater than the distance between the laser rangefinder 5 and the insertion rod 3; the length of the scraper 6 is greater than the distance between the laser rangefinder 5 and the insertion rod 3, so that the scraper 6 can easily scrape the concrete below the laser rangefinder 5.

[0037] Reference Figure 1 and Figure 2 A disc 9 is fitted onto the insert rod 3, and a scale 4 is fixedly mounted on the disc 9. Further, the disc 9 includes a mounting plate 91 and a turntable 92 rotatably mounted on the outer ring of the mounting plate 91. The scale 4 is fixedly mounted on the turntable 92. The first fixing component includes a bolt 93 threadedly connected to the turntable 92, and the bolt 93 abuts against the mounting plate 91. When fixing the scale 4, the bolt 93 is rotated, and the bolt 93 rotates and moves to abut against the outer ring of the mounting plate 91, thereby fixing the turntable 92 in the above position, and thus fixing the scale 4 in the above position.

[0038] Reference Figure 1 and Figure 2 To improve the accuracy of the measurement data of the laser rangefinder 5, a connecting rope 10 is provided on the scale 4. The laser rangefinder 5 is hung on the free end of the connecting rope 10, which is a flexible rope. Under the action of the connecting rope 10, the laser rangefinder 5 is in a vertical state under the action of gravity, so that the laser generated by the laser rangefinder 5 is directly facing the object being measured, thereby improving the accuracy of the measurement data.

[0039] Reference Figure 3 and Figure 4In this embodiment of the application, the first driving member 7 includes a sleeve 71 sleeved on the insert rod 3, a scraper 6 is disposed on the sleeve 71, and the first driving member 7 also includes a float 72 disposed at the bottom of the sleeve 71. The float 72 is hollow and located below the scraper 6. The float 72 is used to drive the sleeve 71 to gradually float up when the concrete liquid level rises.

[0040] Reference Figure 3 and Figure 4 The scraper 6 is slidably disposed on the outer wall of the sleeve 71. The scraper 6 slides along the axial direction of the sleeve 71. The sleeve 71 is provided with an adjusting component for adjusting the distance between the bottom of the scraper 6 and the concrete liquid surface so that the bottom of the scraper 6 is supported on the concrete liquid surface. The adjusting component includes a lead screw 73 rotatably disposed on the outer wall of the sleeve 71. The length direction and the rotation axis of the lead screw 73 are parallel to the axial direction of the sleeve 71. The scraper 6 is threadedly connected to the lead screw 73, and the length direction of the scraper 6 is perpendicular to the length direction of the lead screw 73.

[0041] During concrete pouring, float 72 floats on the concrete surface. As the concrete level rises, it moves sleeve 71 upward, positioning scraper 6 above the concrete surface. At this point, screw 73 is rotated, causing scraper 6 to slide and its bottom wall to rest on the concrete surface. After the concrete mix ratio is adjusted, sleeve 71 is placed on the concrete. Screw 73 is then rotated again, moving scraper 6 to the concrete surface. During this process, scraper 6 is fixed in the aforementioned position. No further adjustment of scraper 6 is needed during concrete pouring, facilitating the smoothing of the concrete surface.

[0042] Reference Figure 3 and Figure 4 In this embodiment, the second driving component 8 includes an installation cylinder 81 sleeved on the insertion rod 3 and a driving wheel 82 rotatably disposed on the outer wall of the installation cylinder 81. The inner cavity of the installation cylinder 81 has a rectangular cross-section, and the rotation axis of the driving wheel 82 is parallel to the axial direction of the installation cylinder 81. A sleeve 71 is sleeved on the outer wall of the installation cylinder 81, and the inner wall of the sleeve 71 abuts against the peripheral wall of the driving wheel 82. The second driving component 8 also includes a first motor 83 disposed on the installation cylinder 81 for driving the driving wheel 82 to rotate. Further, an installation cavity 84 is opened on the inner wall of the installation cylinder 81, and the first motor 83 and the driving wheel 82 are both located in the installation cavity 84. When the first motor 83 is started, the first motor 83 drives the driving wheel 82 to rotate, the rotation of the driving wheel 82 drives the sleeve 71 to rotate, the rotation of the sleeve 71 drives the scraper 6 to rotate, and the rotation of the scraper 6 scrapes the concrete liquid surface to level it. The operation is simple and convenient.

[0043] Reference Figure 3 , Figure 5 and Figure 6During concrete pouring, the flowing concrete impacts the insertion rod 3, easily causing it to sway. This swaying of the insertion rod 3 can cause the laser rangefinder 5 to sway, leading to a decrease in the accuracy of the measurement data. Therefore, in this embodiment, a mounting groove 11 is provided on the lower surface of the scale 4. The length direction of the mounting groove 11 is parallel to the length direction of the scale 4. A buffer is provided inside the mounting groove 11, and the connecting rope 10 is attached to the buffer. The buffer is used to reduce the swaying of the laser rangefinder 5 when the insertion rod 3 is impacted by the flowing concrete. The buffer includes an installation rod 12 disposed in the mounting groove 11, with the length direction of the installation rod 12 parallel to the length direction of the scale 4. In the direction of degree, the connecting rope 10 is hung on the mounting rod 12. Both ends of the mounting rod 12 are provided with a first magnet 13. Multiple first magnets 13 are provided. The multiple first magnets 13 are evenly arranged in a ring along the circumference of the mounting rod 12. The mounting groove 11 is provided with a mounting ring 14. The mounting ring 14 is located on both sides of the mounting rod 12. The first magnets 13 are located in the mounting ring 14. Multiple second magnets 15 are provided in the mounting ring 14. The second magnets 15 are evenly arranged along the inner ring of the mounting ring 14. The second magnets 15 correspond one-to-one with the first magnets 13. The magnetic poles of the second magnets 15 and the corresponding first magnets 13 are opposite and in a separated state.

[0044] After the mounting rod 12 is installed on the scale 4, it is suspended in the air by the action of the first magnet 13 and the second magnet 15. This reduces the possibility that the shaking of the insertion rod 3 will cause the mounting rod 12 to shake, thereby reducing the possibility that the mounting rod 12 will cause the laser rangefinder 5 to shake and improving the accuracy of the test data.

[0045] Reference Figure 3 , Figure 5 and Figure 6 To reduce the possibility of the mounting rod 12 swaying left and right within the scale 4 under the action of the first magnet 13 and the second magnet 15, a third magnet 16 is provided on the side wall of the mounting groove 11 facing both ends of the mounting rod 12, and a fourth magnet 17 corresponding to the third magnet 16 is provided on both ends of the mounting rod 12. The magnetic poles of the fourth magnet 17 are opposite to those of the corresponding third magnet 16. Under the action of the third magnet 16 and the fourth magnet 17, the mounting rod 12 is kept in a centered state, thereby reducing the possibility of the mounting rod 12 swaying left and right.

[0046] Reference Figure 3 , Figure 5 and Figure 6To facilitate the removal of the mounting rod 12, the end of the scale 4 opposite to the insertion rod 3 is provided with a mounting hole 18 for the mounting rod 12 to be removed. A plug 19 is detachably provided on the scale 4 and inserted into the mounting hole 18. Furthermore, a third magnet 16 is provided on the plug 19 near the plug 19. The plug 19 is removed from the scale 4 and the mounting rod 12 is removed from the mounting hole 18 to facilitate the storage of the laser rangefinder 5 and the transfer of the control fixture.

[0047] Reference Figure 2 To facilitate balancing the insertion rod 3, two scales 4 are provided, symmetrically arranged along the axis of the disk 9; the two scales 4 are provided to balance the insertion rod 3 and reduce the possibility of the insertion rod 3 shifting to one side; furthermore, two laser rangefinders 5 are provided to facilitate multi-point measurement and improve the accuracy of test data.

[0048] The implementation principle of a concrete pouring control fixture in this application embodiment is as follows:

[0049] When pouring concrete for floor slabs, the process begins with the following steps: First, formwork 1 is erected, followed by the construction of a reinforcing steel frame 2 within formwork 1. Then, insert rods 3 are installed inside formwork 1, and their length is adjusted to be perpendicular to the ground. Next, a ruler 4 is rotated, causing a laser rangefinder 5 to move and be positioned directly above the top reinforcing steel bar. The data is recorded. The ruler 4 is then rotated again, bringing the laser rangefinder 5 directly above the bottom of formwork 1. The ruler 4 is then secured in place using bolts 93. Concrete is then poured into formwork 1, and the concrete level gradually rises. As the level rises, the data from the laser rangefinder 5 is observed. The concrete pouring data is obtained by subtracting the third measurement from the second measurement. The concrete cover thickness is obtained by subtracting the first measurement from the concrete thickness data. This process of monitoring relevant data during concrete pouring improves the accuracy of the measurements and reduces the impact on the concrete pouring process.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete pouring control fixture, characterized in that: The control fixture includes a rod (3) installed inside the template (1), the length direction of the rod (3) being parallel to the height direction of the template (1), a scale (4) installed on the rod (3), the length direction of the scale (4) being perpendicular to the length direction of the rod (3), a laser rangefinder (5) installed on the scale (4), the emitting end of the laser rangefinder (5) facing the ground, the scale (4) being rotatably mounted on the rod (3), the rotation axis of the scale (4) being parallel to the length direction of the rod (3), and the control fixture also includes a first fixing member for fixing the scale (4); a scraper is slidably mounted on the rod (3). The scraper (6) slides along the length of the insert rod (3). The scraper (6) is located above the steel reinforcement skeleton (2) inside the template (1). The control fixture also includes a first drive member (7) that drives the scraper (6) to slide and makes the bottom of the scraper (6) bear on the concrete liquid surface. The scraper (6) is rotatably mounted on the insert rod (3). The rotation axis of the scraper (6) is parallel to the length of the insert rod (3). The control fixture also includes a second drive member (8) for driving the scraper (6) to rotate and smooth the top surface of the concrete. The length of the scraper (6) is greater than the distance between the laser rangefinder (5) and the insert rod (3). The first driving member (7) includes a sleeve (71) sleeved on the insert rod (3), and the scraper (6) is disposed on the sleeve (71). The first driving member (7) also includes a float (72) disposed at the bottom of the sleeve (71). The float (72) is located below the scraper (6). The float (72) is used to drive the sleeve (71) to gradually float up when the concrete liquid level rises. The scraper (6) is slidably disposed on the outer wall of the sleeve (71). The scraper (6) slides along the axial direction of the sleeve (71). The sleeve (71) is provided with an adjusting member for adjusting the distance between the bottom of the scraper (6) and the concrete liquid level so that the bottom of the scraper (6) is supported on the concrete liquid level.

2. The concrete pouring control fixture according to claim 1, characterized in that: A connecting rope (10) is provided on the scale (4), and the laser rangefinder (5) is attached to the free end of the connecting rope (10).

3. The concrete pouring control fixture according to claim 1, characterized in that: The adjusting component includes a lead screw (73) rotatably mounted on the outer wall of the sleeve (71), the length direction of the lead screw (73) being parallel to the axial direction of the sleeve (71), and a scraper (6) threadedly connected to the lead screw (73), the length direction of the scraper (6) being perpendicular to the length direction of the lead screw (73).

4. The concrete pouring control fixture according to claim 1, characterized in that: The second driving member (8) includes a mounting cylinder (81) sleeved on the insert rod (3) and a driving wheel (82) rotatably disposed on the outer wall of the mounting cylinder (81). The rotation axis of the driving wheel (82) is parallel to the axial direction of the mounting cylinder (81). The sleeve (71) is sleeved on the outer wall of the mounting cylinder (81). The inner wall of the sleeve (71) abuts against the peripheral wall of the driving wheel (82). The second driving member (8) also includes a first motor (83) disposed on the mounting cylinder (81) for driving the driving wheel (82) to rotate.

5. The concrete pouring control fixture according to claim 2, characterized in that: The lower surface of the scale (4) is provided with an installation groove (11), the length direction of the installation groove (11) is parallel to the length direction of the scale (4), a buffer is provided in the installation groove (11), the connecting rope (10) is attached to the buffer, and the buffer is used to reduce the shaking degree of the laser rangefinder (5) when the rod (3) is impacted by the flow of concrete.

6. The concrete pouring control fixture according to claim 5, characterized in that: The buffer includes a mounting rod (12) disposed in a mounting groove (11), a connecting rope (10) being attached to the mounting rod (12), and a first magnet (13) being disposed at both ends of the mounting rod (12). Multiple first magnets (13) are disposed and are evenly arranged along the circumference of the mounting rod (12). A mounting ring (14) is disposed in the mounting groove (11) and is located on both sides of the mounting rod (12). The first magnets (13) are located inside the mounting ring (14). Multiple second magnets (15) are disposed inside the mounting ring (14) and are evenly arranged along the inner ring of the mounting ring (14). The second magnets (15) correspond one-to-one with the first magnets (13). The magnetic poles of the second magnets (15) and the corresponding first magnets (13) are opposite and in a separated state.

7. The concrete pouring control fixture according to claim 6, characterized in that: The mounting groove (11) is provided with a third magnet (16) on the side wall of each of the two ends of the mounting rod (12), and a fourth magnet (17) corresponding to the third magnet (16) is provided at each of the two ends of the mounting rod (12). The magnetic poles of the fourth magnet (17) are opposite to those of the corresponding third magnet (16).

8. The concrete pouring control fixture according to claim 1, characterized in that: Two scales (4) are provided, and a disc (9) is provided on the insertion rod (3). The two scales (4) are symmetrically arranged along the axis of the disc (9) and are provided on the disc (9).

9. The concrete pouring control fixture according to claim 5, characterized in that: The end of the scale (4) facing away from the insertion rod (3) is provided with a mounting hole (18) for the installation rod (12) to be moved out. The scale (4) is provided with a detachable insertion block (19) that is inserted into the mounting hole (18).

Images