Thickness control device for negative reinforcement protective layer of reinforced concrete floor

Abstract

The utility model relates to the field of building construction devices, in particular to a reinforced concrete floor negative reinforcement protective layer thickness control device which comprises a bottom plate, the lower end face of the bottom plate abuts against a concrete floor, a square pipe is arranged on the upper end face of one end of the bottom plate, a plurality of inserting holes are longitudinally and symmetrically formed in the square pipe, and the inserting holes are arranged in the square pipe. The multiple insertion holes are distributed at equal intervals along the arrangement path of the square pipe, insertion plates are installed in the insertion holes in a matched mode, and the length of the insertion plates is larger than the width of the square pipe; a first threaded hole is formed in the top of the square pipe, an adjusting end is installed in the first threaded hole, and the upper end face of the adjusting end is a horizontal plane. First rectangular grooves are symmetrically formed in the upper end face of the end, away from the square pipe, of the bottom plate, second rectangular grooves are symmetrically formed in the outer wall of the side, facing the first rectangular grooves, of the square pipe, and the first rectangular grooves and the second rectangular grooves are communicated with each other.

Description

Technical Field

[0001] This utility model relates to the field of building construction equipment, specifically a device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs. Background Technology

[0002] In building construction, reinforced concrete floor slabs are an important component of the building structure, and their quality directly affects the safety and durability of the building. Precise control of the thickness of the negative reinforcement protective layer plays a crucial role in the performance of reinforced concrete floor slabs.

[0003] Currently, most common devices for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete slabs are plastic components with grooves on both sides for placing the negative reinforcement. While this traditional device can position the negative reinforcement to a certain extent to ensure the thickness of the protective layer, it has many limitations.

[0004] First, traditional devices have a narrow range of applications. Because they only have fixed negative reinforcement placement slots on both sides, they are only suitable for negative reinforcement of specific specifications and spacing. When encountering negative reinforcement with different diameters or spacing, they are difficult to meet construction requirements and require frequent replacement of devices of different specifications, increasing construction costs and time.

[0005] Secondly, the stability of traditional devices is poor. During concrete pouring, operations such as vibration generate significant impact and vibration. Relying solely on simple grooves on both sides to fix the negative reinforcement is insufficient to ensure that the negative reinforcement remains in the correct position throughout the pouring process. This can easily lead to displacement, resulting in deviations in the thickness of the negative reinforcement protective layer and affecting the quality of the floor slab. Utility Model Content

[0006] To address the problems in the existing technology, this utility model provides a device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs, including a base plate, the lower end face of the base plate is close to the concrete floor slab, a square tube is provided on the upper end face of one end of the base plate, and the inside of the square tube is longitudinally symmetrically provided with multiple insertion holes, and the multiple insertion holes are distributed at equal intervals along the setting path of the square tube. An insertion plate is installed in the insertion hole, and the length of the insertion plate is greater than the width of the square tube.

[0008] The top of the square tube has a first threaded hole, and an adjusting end is installed inside the first threaded hole. The upper surface of the adjusting end is a horizontal plane.

[0009] Specifically, the upper end of the base plate facing away from the square tube has a first rectangular groove symmetrically formed, and the outer wall of the square tube facing the first rectangular groove has a second rectangular groove symmetrically formed, and the first rectangular groove and the second rectangular groove are interconnected.

[0010] Specifically, the square tube has symmetrically arranged placement holes inside, and a contact plate is inserted into the placement hole. The thickness of the contact plate is greater than the thickness of the square tube. The contact plate has symmetrically arranged C-shaped holes inside. The bottom of the adjustment end has an annular groove, and an annular sleeve is installed on the annular groove. The annular sleeve has symmetrically arranged through holes. A fixing rope is symmetrically embedded near the center of the bottom end face inside the square tube. The free end of the fixing rope passes through the C-shaped hole and is fixed to the through hole.

[0011] Specifically, the inner side of the contact plate is provided with a directional groove, a silicone pad is embedded in the directional groove, and the end face of the silicone pad protrudes outward from the inner side of the contact plate.

[0012] Specifically, the adjusting end has a second threaded hole inside, an adjusting stud is installed in the second threaded hole, and a circular plate is bonded to the top center of the adjusting stud.

[0013] Specifically, the lower end surface of the base plate is provided with anti-slip texture, and the anti-slip texture is V-shaped.

[0014] Specifically, dot-shaped protrusions are provided on both sides of the insert plate (22).

[0015] The beneficial effects of this utility model are:

[0016] This utility model discloses a device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs. The device comprises square tubes, insert plates, and other components. Before installation, insert plates are installed in any of the insertion holes, ensuring that the end faces of the insert plates at any position are flush. The base plate is moved towards the negative reinforcement, causing several insert plates to contact the negative reinforcement. The insert plates in contact with the negative reinforcement do not move with the base plate, while the insert plates not in contact with the negative reinforcement move with the base plate. The positional relationship of the insert plates relative to the negative reinforcement is shown in the figure. At this point, the insert plates provide internal support for the negative reinforcement. This method is applicable to supporting negative reinforcement at different heights and positions, thus having a wider range of applications. Furthermore, after the insert plates support the negative reinforcement, at least two insert plates are retained above and below the negative reinforcement. Insert plates at other positions can be pushed out of the insertion holes, effectively reducing the cost of use.

[0017] This utility model discloses a device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs. After the insert plate enters the designated position, the construction worker rotates the adjusting end to move it vertically upward relative to the first threaded hole. Simultaneously, the adjusting end moves the annular sleeve vertically upward, causing relative rotation between the annular sleeve and the annular groove. The upward movement of the annular sleeve then moves the fixing rope upward, gradually taut from its initial slack state. The fixing rope in the C-shaped hole area, after transitioning from slack to taut, applies inward pressure to the C-shaped hole, causing the two contact plates to move along the placement hole. The distance between the two contact plates decreases until the inner walls of the two contact plates abut against both sides of the insert plate, locking the position of the insert plate. At this point, the position of the insert plate is less likely to change during concrete pouring, increasing the stability of the device and preventing movement, thus ensuring construction quality. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a front view of the overall structure of this utility model during construction;

[0020] Figure 2 This is a perspective view of the structural parts of this utility model;

[0021] Figure 3 This utility model Figure 2 A magnified view of a portion of region A in the middle;

[0022] Figure 4 This utility model Figure 2 A magnified view of a portion of region B in the middle;

[0023] Figure 5 This utility model Figure 2 A magnified view of a portion of region C in the middle;

[0024] In the diagram: 1. Base plate, 2. Square tube, 3. Adjusting end, 4. Placement hole, 5. Adjusting stud, 6. Sleeve bracket, 11. First rectangular groove, 21. Insertion hole, 22. Insert plate, 23. First threaded hole, 24. Second rectangular groove, 31. Circular groove, 32. Circular sleeve, 33. Through hole, 41. Contact plate, 42. C-shaped hole, 43. Fixing rope, 44. Directional groove, 45. Silicone pad. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] Furthermore, the terms used below are defined based on the functions of this utility model and may vary depending on the user's or operator's intent or convention. Therefore, these terms are defined based on the entire contents of this specification.

[0027] See Figure 1-5 The present invention discloses a device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs, comprising a base plate 1. The lower end face of the base plate 1 is close to the concrete floor slab, that is, during construction, it can be placed horizontally on the concrete floor slab. Generally, the base plate 1 is made of plastic, and the lower end face of the base plate 1 is provided with anti-slip texture. The anti-slip texture is V-shaped, which increases the friction between it and the floor slab, making it more stable.

[0028] A square tube 2 is provided on the upper end face of one end of the base plate 1. The interior of the square tube 2 is symmetrically provided with insertion holes 21. There are multiple insertion holes 21, and the multiple insertion holes 21 are distributed at equal intervals along the setting path of the square tube 2. Insert plates 22 are installed in the insertion holes 21, and the length of the insert plates 22 is greater than the width of the square tube 2. Before installation, insert plates 22 are installed in any insertion hole 21, and the end faces of the insert plates 22 at any position are kept flush.

[0029] During construction, the base plate 1 is moved towards the negative reinforcement, causing several insert plates 22 to contact the negative reinforcement. The insert plates 22 in contact with the negative reinforcement do not move with the base plate 1, while the insert plates 22 not in contact with the negative reinforcement move with the base plate 1. The positional relationship of the insert plates 22 relative to the negative reinforcement at this time can be referred to... Figure 1 As shown, at this time, several insert plates 2 can provide internal support for the negative reinforcement, and this method can be used to support negative reinforcement at different heights and positions, making it more widely applicable.

[0030] At the same time, such as Figure 1 As shown, further, after the insert plate 2 supports the negative rib, at least two insert plates 2 are retained at the top and bottom of the negative rib, and the insert plates 2 at other positions can be pushed in the direction to separate from the insertion hole 21. This method can effectively reduce its usage cost.

[0031] The top of the square tube 2 is provided with a first threaded hole 23, and an adjusting end 3 is installed in the first threaded hole 23. The upper surface of the adjusting end 3 is horizontal. The adjusting end 3 can be rotated into the first threaded hole 23. According to the actual protective layer thickness requirements, the adjusting end 3 can be rotated to the corresponding height to meet the casting requirements of different thickness protective layers.

[0032] Furthermore, such as Figure 1 and Figure 2As shown, the upper end of the base plate 1 facing away from the square tube 2 is symmetrically provided with a first rectangular groove 11, and the outer wall of the square tube 2 facing the first rectangular groove 11 is symmetrically provided with a second rectangular groove 24. The first rectangular groove 11 and the second rectangular groove 24 are interconnected. After the adjusting end 3 is adjusted to the required height, the insert plate 22 is inserted along the second rectangular groove 24 and enters the inner side of the first rectangular groove 11 along the second rectangular groove 24. At this time, the insert plate 22 can provide external support for the side wall of the square tube 2 and increase the overall strength of the square tube 2.

[0033] In another embodiment, see Figures 1-5 The square tube 2 has symmetrically arranged placement holes 4 inside. A contact plate 41 is inserted into each placement hole 4. The thickness of the contact plate 41 is greater than the thickness of the square tube 2. A C-shaped hole 42 is symmetrically arranged inside the contact plate 41. An annular groove 31 is formed at the bottom of the adjusting end 3. An annular sleeve 32 is installed on the annular groove 31. A through hole 33 is symmetrically arranged on the annular sleeve 32. A fixing rope 43 is symmetrically embedded near the center of the bottom end face inside the square tube 2. The free end of the fixing rope 43 passes through the C-shaped hole 42 and is fixed to the through hole 33. In the initial state, the fixing rope 43 is in a slack state (i.e., the adjusting end 3 is at its lowest position relative to the first threaded hole 23). When several insert plates 22 are in... Figure 1 After reaching the indicated position, the construction worker rotates the adjusting end 3 to move it vertically upward relative to the first threaded hole 23. As the adjusting end 3 moves upward, it drives the annular sleeve 32 to move vertically upward. The annular sleeve 32 and the annular groove 31 rotate relative to each other. After the annular sleeve 32 moves upward, it drives the fixing rope 43 to move upward. The fixing rope 43 gradually straightens from its initial slack state. The fixing rope 43 in the area of ​​the C-shaped hole 42 moves from slack to slack. The fixing rope 43 will apply an inward squeezing force to the C-shaped hole 42, causing the two contact plates 41 to move along the placement hole 4. The distance between the two contact plates 41 decreases until the inner walls of the two contact plates 41 abut against the two sides of the insert plate 22, locking the position of the insert plate 22. At this time, the position of the insert plate 22 is not easy to change when pouring concrete, which increases the stability of the device itself.

[0034] Specifically, such as Figures 1-3 The inner side of the contact plate 41 is provided with a directional groove 44, and a silicone pad 45 is embedded in the directional groove 44. The end face of the silicone pad 45 protrudes outward from the inner side of the contact plate 41. When the contact plate 41 moves, the silicone pad 45 directly contacts the outer wall of the insert plate 22. When in contact, the silicone pad 45 is concave and deforms, which increases the stability of the positioning and fixing of the insert plate 22.

[0035] Furthermore, the adjusting end 3 has a second threaded hole 34 inside, and an adjusting stud 5 is installed in the second threaded hole 34. A circular plate 51 is glued to the center of the top of the adjusting stud 5. At this time, when the position of the insert plate 22 is locked by the adjusting end 3 and the adjusting end 3 itself cannot be rotated upward, the circular plate 51 can be rotated. By adjusting the exposed length of the circular plate 51 relative to the second threaded hole 34, the casting thickness of the protective layer can be further adjusted.

[0036] The insert plate 22 has dotted protrusions on both sides to increase the mutual friction between it and the silicone pad 45 when they come into contact, making the connection between them more stable.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs, comprising a base plate (1), characterized in that: The lower end face of the base plate (1) is close to the concrete floor slab. A square tube (2) is provided on the upper end face of one end of the base plate (1). The square tube (2) has longitudinally symmetrical insertion holes (21) inside. There are multiple insertion holes (21), and the multiple insertion holes (21) are distributed at equal intervals along the path of the square tube (2). Insert plates (22) are installed in the insertion holes (21), and the length of the insert plates (22) is greater than the width of the square tube (2). The top of the square tube (2) is provided with a first threaded hole (23), and an adjustment end (3) is installed in the first threaded hole (23). The upper surface of the adjustment end (3) is a horizontal plane.

2. The device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs according to claim 1, characterized in that: The bottom plate (1) has a first rectangular groove (11) symmetrically opened on the upper end of the side facing away from the square tube (2), and the square tube (2) has a second rectangular groove (24) symmetrically opened on the outer wall of the side facing the first rectangular groove (11), and the first rectangular groove (11) and the second rectangular groove (24) are interconnected.

3. The device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs according to claim 1, characterized in that: The square tube (2) has symmetrically arranged placement holes (4) inside. A contact plate (41) is inserted into the placement hole (4). The thickness of the contact plate (41) is greater than the thickness of the square tube (2). A C-shaped hole (42) is symmetrically arranged inside the contact plate (41). A circular groove (31) is opened at the bottom of the adjustment end (3). A ring sleeve (32) is installed on the circular groove (31). A through hole (33) is symmetrically arranged on the ring sleeve (32). A fixing rope (43) is symmetrically embedded near the center of the bottom end face inside the square tube (2). The free end of the fixing rope (43) passes through the C-shaped hole (42) and is fixed on the through hole (33).

4. The device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs according to claim 3, characterized in that: The inner side of the contact plate (41) is provided with a directional groove (44), and a silicone pad (45) is embedded in the directional groove (44), and the end face of the silicone pad (45) protrudes outward from the inner side of the contact plate (41).

5. The device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs according to claim 1, characterized in that: The adjustment end (3) has a second threaded hole (34) inside, and an adjustment stud (5) is installed in the second threaded hole (34). A circular plate (51) is glued to the top center of the adjustment stud (5).

6. The device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs according to claim 1, characterized in that: The bottom surface of the base plate (1) is provided with anti-slip texture, and the anti-slip texture is V-shaped.

7. The device for controlling the thickness of the protective layer of negative reinforcement in reinforced concrete floor slabs according to claim 1, characterized in that: The insert plate (22) has dot-shaped protrusions on both sides.

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