A reinforced concrete protective layer locator

Abstract

The present invention discloses a reinforced concrete protective layer positioner, comprising an inner ring and an outer ring, the inner ring and the outer ring are fixedly connected by a plurality of positioning components, the inner wall of the inner ring is symmetrically fixed with two clamping springs, the outer ring is connected to the positioning component, the positioning component is radially evenly distributed and fixed on the outer wall of the inner ring with the midpoint of the inner ring as the center, the same side of the inner ring and the outer ring is respectively provided with a first opening and a second opening, and a transmission component is further provided between the inner ring and the outer ring, and the overall effective length of the positioning component is adjusted by rotating the transmission component. The present invention can be adjusted according to specific usage conditions, and is flexible and convenient to use; the construction method is simple to operate, easy to install, and quick to construct, which reduces labor and material waste, reduces engineering costs and avoids delays in construction period, ensures the quality of the steel bars of the pile head of the cast-in-place pile, and improves the bearing capacity and durability of the pile, and ultimately improves the quality of the project.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar protection, and in particular to a reinforced concrete protective layer positioner. Background Art

[0002] Generally speaking, the concrete protective layer refers to the concrete layer between the outer edge of the outermost stress-bearing steel bars in the concrete structural components and the concrete surface, referred to as the protective layer. When the outer steel bars in the steel skeleton of the reinforced concrete are close to the edge of the reinforced concrete, that is, the thickness of the concrete protective layer is not enough, the reinforced concrete components will produce creep cracks under the action of temperature changes and stress. The oxygen in the air will oxidize and corrode the steel bars through the fine cracks, reducing the effective strength of the reinforced concrete structure.

[0003] The diameter of the original reinforced concrete protective layer locator is relatively fixed when in use and cannot be adjusted according to specific usage conditions. It is inconvenient to use and requires the purchase of locators of various sizes, which is costly.

[0004] Therefore, the key to solving the above technical problems is to develop a reinforced concrete protective layer locator with high flexibility and easy installation. Summary of the invention

[0005] In view of the many defects and shortcomings in the above-mentioned background technology, the present invention has made improvements and innovations thereto, with the aim of providing a reinforced concrete protective layer locator which is easy to install, highly flexible, and has a stable and strong overall structure to effectively ensure the thickness of the concrete protective layer.

[0006] Another object of the present invention is to be able to adjust the reinforced concrete protective layer positioner according to specific usage conditions, thereby effectively ensuring the thickness of the concrete protective layer, accelerating the construction progress and reducing costs.

[0007] In order to solve the above problems and achieve the above invention objectives, a reinforced concrete protective layer locator of the present invention is realized by adopting the following design structure and the following technical solutions:

[0008] As an improvement of the reinforced concrete protective layer positioner of the present invention, it comprises an inner ring (1) and an outer ring (2), the inner ring (1) and the outer ring (2) are fixedly connected via a plurality of positioning components (3), the inner wall of the inner ring (1) is symmetrically fixedly provided with two clamping springs (11), the outer ring (2) is connected to the positioning components (3), the positioning components (3) are radially and evenly distributed and fixed on the outer wall of the inner ring (1) with the midpoint of the inner ring (1) as the center, the inner ring (1) and the outer ring (2) are respectively provided with a first opening (101) and a second opening (201) on the same side, and a transmission component (4) is further provided between the inner ring (1) and the outer ring (2), and the overall effective length of the positioning component (3) can be adjusted by rotating the transmission component (4).

[0009] As an improvement of the above-mentioned present invention, the first opening (101) and the second opening (201) opened on the same side of the inner ring (1) and the outer ring (2) are in the form of an eight-shaped opening that is narrow inside and wide outside.

[0010] As a further improvement of the above-mentioned present invention, the positioning assembly (3) includes a fixed tube (31) and a sliding rod (32) located in the fixed tube (31), wherein the fixed tube (31) is provided with a sliding groove (311) penetrating the side wall of the fixed tube (31) at the top surface close to the inner ring (1); a sliding column (321) is provided on the upper part of one end of the sliding rod (32), and a pressure cap (322) is inserted at the top end of the sliding column (321), and the pressure cap (322) and the sliding column (321) are interference-connected, and the other end of the sliding rod (32) is fixedly connected with a spherical protrusion, and the diameter of the spherical protrusion is larger than the outer diameter of the fixed tube (31).

[0011] As a further improvement of the above-mentioned present invention, the fixed tube (31) is a cylindrical member with two ends open and a hollow interior, one end of the cylindrical member is fixedly connected to the outer wall of the inner ring (1), and the sliding column (321) is matched and located in the sliding groove (311) and slides along the length direction of the fixed tube (31).

[0012] As a further improvement of the above-mentioned present invention, the transmission assembly (4) includes a first rotating plate (41) and a second rotating plate (42), and the first rotating plate (41) and the second rotating plate (42) are both provided with a plurality of convex ribs (43) and a plurality of transmission grooves (401) for working in conjunction with the positioning assembly (3), and the transmission grooves (401) respectively penetrate the front and back surfaces of the first rotating plate (41) and the second rotating plate (42), wherein the first rotating plate (41) and the second rotating plate (42) are detachably connected, and the first rotating plate (41) and the second rotating plate (42) are connected to form a circular ring; a rack (413) is provided on an outer wall of one side of the first rotating plate (41), and a limiting spring piece (21) adapted to the rack (413) is provided on the inner wall of the outer ring (2).

[0013] As a further improvement of the above-mentioned present invention, a side of the limiting spring piece (21) close to the rack (413) is fixedly connected to a clamping pin (211), and a top surface of one end of the limiting spring piece (21) close to the clamping pin (211) is fixedly connected to a pull plate (212).

[0014] As a further improvement of the above-mentioned present invention, both ends of the first rotating plate (41) are provided with a card slot (411), and the bottom surface of the card slot (411) is fixedly connected with a plug post (412); both ends of the second rotating plate (42) are fixedly connected with a card block (421) corresponding to the card slot (411), and the card block (421) is provided with a socket (422) corresponding to the plug post (412).

[0015] As a further improvement of the above-mentioned present invention, the sliding column (321) passes through the sliding groove (311) and the transmission groove (401) from bottom to top in sequence, and is then locked by plugging and installing the pressure cap (322), so that the sliding column (321) is located in the sliding groove (311) and the transmission groove (401), and slides in the transmission groove (311) and the transmission groove (401).

[0016] As a further improvement of the above-mentioned present invention, an injection molding layer, an anti-rust layer and a warning layer are sprayed in sequence from the inside to the outside on the outer surfaces of the inner ring (1), the outer ring (2), the positioning component (3) and the transmission component (4), and the warning layer is coated with fluorescent powder.

[0017] As a further improvement of the above-mentioned present invention, a polymer wear-resistant material is injection molded on the injection layer; the anti-rust layer includes an epoxy zinc-rich primer and a chlorinated rubber topcoat and an epoxy micaceous iron intermediate paint located between the epoxy zinc-rich primer and the chlorinated rubber topcoat; the warning layer is a yellow or black reflective warning tape or a reflective color film or a reflective paint.

[0018] Working principle: When in use, the operator only needs to rotate the first rotating plate (41) and the second rotating plate (42) by holding the convex rib (43). When the first rotating plate (41) and the second rotating plate (42) rotate, the sliding column (321) slides in the transmission groove (401). Under the driving action of the transmission groove (401), the sliding column (321) drives the sliding rod (32) to slide on the inner wall of the fixed tube (31), thereby achieving unified adjustment of the overall effective length of several positioning components (3) and achieving adjustment of the distance between the steel bar and the template.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The invention has a simple structure, novel and reasonable design, can be adjusted according to specific usage conditions, and is flexible and convenient to use;

[0021] 2. The construction method of the present invention is simple to operate, easy to install, and quick to construct. While ensuring the quality of the steel bars at the pile head of the cast-in-place pile, it also improves the bearing capacity and durability of the pile, ultimately improving the quality of the project;

[0022] 3. The present invention can minimize the waste of labor and materials, reduce engineering costs, avoid delays in construction, and also minimize the labor intensity of operators;

[0023] 4. The exterior of each component of the present invention is coated with a self-luminous fluorescent material, which can clearly mark the position of the locator at night or in a dark room or underground construction environment, and can effectively serve as a safety reminder. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a partial structural schematic diagram of the present invention;

[0027] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the positioning component in the present invention;

[0029] Figure 5 The present invention Figure 3 The enlarged structural diagram at A in the middle;

[0030] Figure 6 is a schematic diagram of the structure of the first rotating plate of the present invention;

[0031] Figure 7 is a schematic structural diagram of a second rotating plate of the present invention;

[0032] Figure 8 It is a schematic diagram of the use state of the present invention;

[0033] Among them, the numbers in the figure are: 1-inner ring, 101-first opening, 11-clamping spring;

[0034] 2—outer ring, 201—second opening, 21—limiting spring, 211—pin, 212—pull plate;

[0035] 3—positioning assembly, 31—fixed tube, 311—slide groove, 32—slide rod, 321—slide column, 322—pressing cap;

[0036] 4—transmission assembly, 401—transmission slot, 41—first rotating plate, 411—slot, 412—insertion column, 413—rack, 42—second rotating plate, 421—block, 422—insertion hole, 43—convex rib. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0038] A reinforced concrete protective layer positioner as shown in the drawings of the specification comprises an inner ring 1 and an outer ring 2, the inner ring 1 and the outer ring 2 are fixedly connected by a plurality of positioning components 3, the inner wall of the inner ring 1 is symmetrically fixed with two clamping springs 11, the outer ring 2 is connected to the positioning components 3, the positioning components 3 are radially and evenly distributed on the outer wall of the inner ring 1 with the midpoint of the inner ring 1 as the center, a first opening 101 and a second opening 201 are respectively provided on the same side of the inner ring 1 and the outer ring 2, a transmission component 4 is further provided between the inner ring 1 and the outer ring 2, and the overall effective length of the positioning component 3 can be adjusted by rotating the transmission component 4.

[0039] Furthermore, the first opening 101 and the second opening 201 opened on the same side of the inner ring 1 and the outer ring 2 are in the shape of an eight-shaped opening that is narrow inside and wide outside.

[0040] In the present invention, both the inner ring 1 and the outer ring 2 are made of plastic and have a certain elasticity.

[0041] Furthermore, the positioning assembly 3 includes a fixed tube 31 and a sliding rod 32 located in the fixed tube 31, wherein the fixed tube 31 is provided with a sliding groove 311 that penetrates the side wall of the fixed tube 31 at the top surface near the inner ring 1; a sliding column 321 is provided on the upper part of one end of the sliding rod 32, and a pressure cap 322 is inserted at the top end of the sliding column 321, and the pressure cap 322 and the sliding column 321 are interference connected, and the other end of the sliding rod 32 is fixedly connected with a spherical protrusion, and the diameter of the spherical protrusion is larger than the outer diameter of the fixed tube 31.

[0042] Specifically, the fixed tube 31 is a cylindrical member with two ends open and a hollow interior. One end of the cylindrical member is fixedly connected to the outer wall of the inner ring 1, and the sliding column 321 is matched in the sliding groove 311 and slides along the length direction of the fixed tube 31.

[0043] In the present invention, since the top end of the sliding column 321 is inserted with a pressure cap 322, the pressure cap 322 and the sliding column 321 are in interference connection. After the transmission component 4 is connected to the sliding column 321, the pressure cap 322 is inserted into the top end of the sliding column 321. Since the pressure cap 322 and the sliding column 321 are in interference connection, the pressure cap 322 is difficult to fall off, and the transmission component 4 can be limited.

[0044] Furthermore, the transmission assembly 4 includes a first rotating plate 41 and a second rotating plate 42, and the first rotating plate 41 and the second rotating plate 42 are both provided with a plurality of convex ribs 43 and a plurality of transmission grooves 401 that cooperate with the positioning assembly 3, and the transmission grooves 401 respectively penetrate the front and back surfaces of the first rotating plate 41 and the second rotating plate 42, wherein the first rotating plate 41 and the second rotating plate 42 are detachably connected, and the first rotating plate 41 and the second rotating plate 42 are connected to form a circular ring; a rack 413 is provided on an outer wall of one side of the first rotating plate 41, and a limiting spring piece 21 adapted to the rack 413 is provided on the inner wall of the outer ring 2.

[0045] In the present invention, a rack 413 is disposed on the outer wall of the first rotating plate 41 , which can be used to limit and fix the rotation of the first rotating plate 41 .

[0046] Specifically, a side of the limiting spring piece 21 close to the rack 413 is fixedly connected to a locking pin 211 , and a top surface of one end of the limiting spring piece 21 close to the locking pin 211 is fixedly connected to a pulling plate 212 .

[0047] Specifically, both ends of the first rotating plate 41 are provided with a slot 411, and the bottom surface of the slot 411 is fixedly connected with a plug post 412; both ends of the second rotating plate 42 are fixedly connected with a block 421 corresponding to the slot 411, and the block 421 is provided with a socket 422 corresponding to the plug post 412.

[0048] Specifically, the slide column 321 passes through the slide groove 311 and the transmission groove 401 from bottom to top in sequence, and then is locked by inserting and installing the pressure cap 322, so that the slide column 321 is located in the slide groove 311 and the transmission groove 401 and slides in the transmission groove 311 and the transmission groove 401.

[0049] Furthermore, an injection molding layer, an anti-rust layer and a warning layer are sprayed on the outer surfaces of the inner ring 1, the outer ring 2, the positioning component 3 and the transmission component 4 in sequence from the inside to the outside, and the warning layer is coated with fluorescent powder.

[0050] Specifically, a polymer wear-resistant material is injection molded on the injection layer; the anti-rust layer includes an epoxy zinc-rich primer and a chlorinated rubber topcoat and an epoxy micaceous iron intermediate paint located between the epoxy zinc-rich primer and the chlorinated rubber topcoat; the warning layer is a yellow or black reflective warning tape or a reflective color film or a reflective paint.

[0051] For more details, please refer to the manual. Figure 1 To the instruction manual Figure 6 A reinforced concrete protective layer positioner comprises an inner ring 1 and an outer ring 2 sleeved on the outer side thereof, the inner wall of the inner ring 1 is symmetrically fixedly connected with two clamping springs 11, the same side of the inner ring 1 and the outer ring 2 is respectively provided with a first opening 101 and a second opening 201, the inner ring 1 and the outer ring 2 are connected through a plurality of positioning components 3, the positioning components 3 comprise a fixed tube 31 and a sliding rod 32 sliding on the inner wall thereof, the top surface of the fixed tube 31 is provided with a sliding groove 311, the sliding rod 32 is fixedly connected with a sliding column 321, and the sliding column 321 slides in the slide groove 311, and a transmission component 4 is also provided between the inner ring 1 and the outer ring 2. The transmission component 4 includes a first rotating plate 41 and a second rotating plate 42 detachably connected thereto. The first rotating plate 41 and the second rotating plate 42 form a circular ring. The first rotating plate 41 and the second rotating plate 42 are provided with a plurality of transmission grooves 401 corresponding to the positioning component 3. The slide column 321 slides in the transmission groove 401. The first rotating plate 41 and the second rotating plate 42 are fixedly connected with a plurality of ribs 43.

[0052] In this embodiment, the inner ring 1 and the outer ring 2 are both made of plastic and have a certain elasticity. When in use, the second rotating plate 42 is first removed and separated from the first rotating plate 41, and the steel bar is passed through the second opening 201 and the first opening 101 into the inner ring 1, and is clamped and fixed by the two clamping springs 11, and then the second rotating plate 42 is connected and fixed to the first rotating plate 41. At this time, the positioning component 3 can separate the steel bar and the template by a certain distance, thereby ensuring the thickness of the concrete protective layer. At the same time, when in use, the first rotating plate 41 and the second rotating plate 42 can be rotated by holding the convex rib 43. When the first rotating plate 41 and the second rotating plate 42 are rotated, the sliding column 321 slides in the transmission groove 401. Under the action of the transmission groove 401, the sliding column 321 drives the sliding rod 32 to slide on the inner wall of the fixed tube 31, thereby realizing the unified adjustment of the overall effective length of several positioning components 3, and realizing the adjustment of the distance between the steel bar and the template. It can be adjusted according to specific usage conditions, and the use is more flexible and convenient.

[0053] Specifically, the outer wall of the first rotating plate 41 has a rack 413 , which can be used to limit and fix the rotation of the first rotating plate 41 .

[0054] Specifically, a limiting spring piece 21 is fixedly connected to the inner wall of the outer ring 2 near the position of the rack 413, and a clamping pin 211 is fixedly connected to one side of the limiting spring piece 21 near the rack 413, and a pulling plate 212 is fixedly connected to the top surface of one end of the limiting spring piece 21 near the clamping pin 211. When in use, the limiting spring piece 21 can be moved by pulling the pulling plate 212, so that the clamping pin 211 is out of contact with the rack 413, and the first rotating plate 41 and the second rotating plate 42 can be rotated by holding the convex rib 43. When they are rotated to a specified angle, the pulling plate 212 is released, and the clamping pin 211 is engaged with the rack 413 under the action of the limiting spring piece 21, thereby realizing the limiting fixation of the first rotating plate 41 and the second rotating plate 42.

[0055] Specifically, both ends of the first rotating plate 41 are provided with a clamping groove 411 , and the bottom surface of the clamping groove 411 is fixedly connected with a plug post 412 for connecting the first rotating plate 41 and the second rotating plate 42 .

[0056] Specifically, both ends of the second rotating plate 42 are fixedly connected with a block 421 corresponding to the slot 411, and the block 421 is provided with a socket 422 corresponding to the plug column 412. When connected with the steel bar, the second rotating plate 42 is pulled upward, the block 421 is disengaged from the slot 411, and the socket 422 is disengaged from the plug column 412, and the steel bar is passed through the second opening 201 and the first opening 101 into the inner ring 1, and then the block 421 of the second rotating plate 42 is engaged with the slot 411 of the first rotating plate 41, and at the same time, the socket 422 is plugged into the plug column 412 to realize the connection between the first rotating plate 41 and the second rotating plate 42.

[0057] Specifically, a plurality of positioning components 3 are evenly distributed radially, and can isolate the steel bars at equal distances around them.

[0058] In summary, a more specific embodiment of the present invention is:

[0059] Example 1

[0060] The working principle and use process of the present invention are as follows: the inner ring 1 and the outer ring 2 are both made of plastic and have a certain elasticity. When in use, the construction personnel first remove and separate the second rotating plate 42 from the first rotating plate 41, and pass the steel bars into the inner ring 1 through the second opening 201 and the first opening 101, and clamp them with two clamping springs 11, and then connect and fix the second rotating plate 42 and the first rotating plate 41 as a whole. At this time, the positioning component 3 can separate the steel bars from the template by a certain distance, thereby ensuring the thickness of the concrete protective layer.

[0061] Example 2

[0062] Embodiment 2 is basically the same as embodiment 1, except that, when using embodiment 2, the construction personnel first dismantle and separate the second rotating plate 42 from the first rotating plate 41, pass the steel bar into the inner ring 1 through the second opening 201 and the first opening 101, and clamp and fix it with the two clamping springs 11, and then connect and fix the second rotating plate 42 with the first rotating plate 41 as a whole. At this time, the pulling plate 212 is pulled to make the limiting spring 21 disengage from the contact rack 413, and at the same time, the first rotating plate 41 and the second rotating plate 42 are rotated by holding the convex rib 43. When the movable plate 42 rotates, the sliding column 321 slides in the transmission groove 401. Under the driving action of the transmission groove 401, the sliding column 321 drives the sliding rod 32 to slide on the inner wall of the fixed tube 31, so as to uniformly adjust the overall effective length of several positioning components 3, so as to adjust the distance between the steel bar and the template. When the distance is adjusted to a suitable position, the pull plate 212 is released, and the clamping pin 211 is engaged with the rack 413 under the action of the limiting spring piece 21, so as to limit and fix the first rotating plate 41 and the second rotating plate 42, so that the reinforced concrete protective layer positioner can better ensure the thickness of the concrete protective layer.

[0063] When in use, the limiting spring piece 21 is moved by the pull plate 212, so that the card pin 211 is out of contact with the rack 413. The first rotating plate 41 and the second rotating plate 42 can be rotated by holding the convex rib 43. When they are rotated to a specified angle, the pull plate 212 is released, and the card pin 211 is engaged with the rack 413 under the action of the limiting spring piece 21, thereby realizing the limiting fixation of the first rotating plate 41 and the second rotating plate 42.

[0064] Finally, it should be noted that the above has been combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are within the scope of protection of the present invention. In addition, all the connections and connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

Claims

1. A reinforced concrete protective layer positioner, comprising an inner ring (1) and an outer ring (2), wherein the inner ring (1) and the outer ring (2) are fixedly connected via a plurality of positioning components (3), characterized in that: Two clamping springs (11) are symmetrically fixedly provided on the inner wall of the inner ring (1); the outer ring (2) is connected to a positioning assembly (3); the positioning assembly (3) is evenly distributed and fixed on the outer wall of the inner ring (1) in a radial shape with the midpoint of the inner ring (1) as the center; a first opening (101) and a second opening (201) are respectively provided on the same side of the inner ring (1) and the outer ring (2); a transmission assembly (4) is further provided between the inner ring (1) and the outer ring (2); and the overall effective length of the positioning assembly (3) can be adjusted by rotating the transmission assembly (4); wherein: The positioning assembly (3) comprises a fixed tube (31) and a sliding rod (32) located in the fixed tube (31), wherein a sliding groove (311) penetrating the side wall of the fixed tube (31) is provided at the top surface of the fixed tube (31) near the inner ring (1); a sliding column (321) is provided at the upper part of one end of the sliding rod (32); a pressing cap (322) is inserted at the top end of the sliding column (321); the pressing cap (322) and the sliding column (321) are interference-connected; and a spherical protrusion is fixedly connected to the other end of the sliding rod (32); the diameter of the spherical protrusion is larger than the outer diameter of the fixed tube (31); The slide column (321) passes through the slide groove (311) and the transmission groove (401) in sequence from bottom to top, and is then locked by inserting and installing the pressing cap (322), so that the slide column (321) is located in the slide groove (311) and the transmission groove (401) and slides in the slide groove (311) and the transmission groove (401); The transmission assembly (4) comprises a first rotating plate (41) and a second rotating plate (42), each of which is provided with a plurality of convex ribs (43) and a plurality of transmission grooves (401) for working in conjunction with the positioning assembly (3), the transmission grooves (401) respectively passing through the front and back surfaces of the first rotating plate (41) and the second rotating plate (42), wherein the first rotating plate (41) and the second rotating plate (42) are detachably connected, and the first rotating plate (41) and the second rotating plate (42) are connected to form a circular ring; a rack (413) is provided on an outer wall of one side of the first rotating plate (41), and a limiting spring sheet (21) adapted to the rack (413) is provided on an inner wall of the outer ring (2).

2. A reinforced concrete protective layer locator according to claim 1, characterized in that: The first opening (101) and the second opening (201) opened on the same side of the inner ring (1) and the outer ring (2) are in the form of an eight-shaped opening that is narrow inside and wide outside.

3. A reinforced concrete protective layer locator according to claim 1, characterized in that: The fixed tube (31) is a cylindrical component with two open ends and a hollow interior. One end of the cylindrical component is fixedly connected to the outer wall of the inner ring (1), and the sliding column (321) is located in the sliding groove (311) and slides along the length direction of the fixed tube (31).

4. A reinforced concrete protective layer locator according to claim 1, characterized in that: A locking pin (211) is fixedly connected to one side of the limiting spring piece (21) close to the rack (413), and a pull plate (212) is fixedly connected to the top surface of one end of the limiting spring piece (21) close to the locking pin (211).

5. A reinforced concrete protective layer locator according to claim 1, characterized in that: Both ends of the first rotating plate (41) are provided with a card slot (411), and the bottom surface of the card slot (411) is fixedly connected with an insertion column (412); both ends of the second rotating plate (42) are fixedly connected with a card block (421) corresponding to the card slot (411), and the card block (421) is provided with a plug hole (422) corresponding to the insertion column (412).

6. A reinforced concrete protective layer locator according to claim 1, characterized in that: An injection molding layer, an anti-rust layer, and a warning layer are sprayed in sequence from the inside to the outside on the outer surfaces of the inner ring (1), the outer ring (2), the positioning component (3), and the transmission component (4), and the warning layer is coated with fluorescent powder.

7. A reinforced concrete cover locator according to claim 6, characterized in that: A polymer wear-resistant material is injection molded on the injection layer; the anti-rust layer includes an epoxy zinc-rich primer and a chlorinated rubber topcoat and an epoxy micaceous iron intermediate paint located between the epoxy zinc-rich primer and the chlorinated rubber topcoat; the warning layer is a yellow or black reflective warning tape or a reflective color film or a reflective paint.

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