A device for controlling the thickness of a reinforcing cover

Abstract

The utility model relates to reinforcing bar protection technical field, concretely relates to a reinforcing bar protective layer thickness control device, the device includes the first buckle and the second buckle of reinforcing bar outside installation, the first buckle and the second buckle inside all are connected with connecting rod, the first buckle one side is connected with threaded bush, the threaded bush inside threaded connection has the threaded rod, the threaded bush outside slide limit ring, the limit ring one side is connected with fixed plate, the utility model discloses when adjusting mould plate, make the net frame always be in the preset position inside the protective layer, promote the net frame in the position accurate and the stable state of form, can more effectively disperse the stress that concrete shrinkage and temperature change etc. produce, reduce the crack, promote the crack resistance and durability of protective layer, simultaneously when adjusting, need not adjust the net frame position alone, through the adjustment threaded rod can complete protective layer thickness control and net frame positioning simultaneously, reduce the tediousness and error of manual operation of multichannel working procedure.

Description

Technical Field

[0001] This utility model relates to the field of rebar protection technology, specifically to a rebar protective layer thickness control device. Background Technology

[0002] In the field of construction engineering, reinforced concrete structures are the main load-bearing form of core infrastructure such as bridges, high-rise buildings, tunnels, and water conservancy projects. The thickness of the concrete cover, which serves as a "protective barrier" between the steel reinforcement and the external environment, directly determines the durability, safety, and service life of the reinforced concrete structure.

[0003] The operation process of traditional equipment is relatively complicated. It requires manual measurement of thickness with a tape measure and placement of pads point by point for positioning. Furthermore, the installation of the space frame needs to be adjusted simultaneously with the adjustment of its position, which may cause the space frame to be misaligned due to positional defects, thus failing to fully utilize the performance of the space frame. In addition, manual adjustment of the space frame significantly reduces work efficiency.

[0004] In view of this, this paper studies and improves upon existing problems, and provides a device for controlling the thickness of the concrete cover of steel bars. The device has a reasonable structural design, high stability, and is suitable for various applications. The aim of this technology is to solve the problem and improve its practical value. Utility Model Content

[0005] This invention ensures that the space frame is always in a preset position inside the protective layer when adjusting the mold plate. This allows the space frame to more effectively disperse the stress caused by concrete shrinkage and temperature changes when it is in a precise and stable position, reducing cracks and improving the crack resistance and durability of the protective layer. At the same time, the space frame position does not need to be adjusted separately during adjustment. The protective layer thickness control and space frame positioning can be completed simultaneously by adjusting the threaded rod, reducing multiple processes and minimizing the tediousness and error of manual operation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rebar protective layer thickness control device, comprising a first buckle and a second buckle installed on the outside of the rebar, both the first buckle and the second buckle being connected to a connecting rod inside, a threaded sleeve being connected to one side of the first buckle, a threaded rod being threadedly connected inside the threaded sleeve, a limiting ring sliding on the outside of the threaded sleeve, a fixing plate being connected to one side of the limiting ring, and a grid frame being installed between the limiting ring and the fixing plate;

[0007] The connecting rod has a sliding buckle on its outer side, and the other end of the sliding buckle is movably connected to the outer side of the limiting ring.

[0008] Preferably, the first buckle and the second buckle are sleeved on the outside of the reinforcing bar, and the first buckle and the second buckle are connected by bolts.

[0009] Preferably, the threaded sleeve is fixedly connected to the first snap fastener, and a movable seat is movably connected to the outside of the threaded rod, and the movable seat moves horizontally along the outside of the threaded sleeve by rotating the threaded rod.

[0010] Preferably, the movable seat is connected to four sets of brackets on the outside, and the other end of the four sets of brackets is fixedly connected to a limiting ring. The fixing plate and the limiting ring are connected by bolts.

[0011] Preferably, the lower end of the limiting ring is fixedly connected to two sets of connecting buckles, and the two sets of connecting buckles are movably connected to a support rod.

[0012] Preferably, both sets of connecting rods are slidably connected to sliding buckles on their outer sides, and the other end of the support rod is movably connected inside the sliding buckle.

[0013] This utility model has the following beneficial effects: When adjusting the mold plate, the space frame is always in the preset position (such as the center or a specific area) inside the protective layer, so that the space frame can more effectively disperse the stress generated by concrete shrinkage and temperature changes when the position is accurate and the shape is stable, thereby reducing cracks and improving the crack resistance and durability of the protective layer. At the same time, there is no need to adjust the position of the space frame separately during adjustment. The thickness control of the protective layer and the positioning of the space frame can be completed simultaneously by adjusting the threaded rod, reducing multiple processes and reducing the tediousness and error of manual operation.

[0014] When the threaded rod is rotated to adjust its length, the stable support provided by the sliding buckle on the connecting rod can provide symmetrical reverse support force to the threaded rod, counteracting the torque caused by gravity on one side and preventing the threaded rod from tilting due to uneven force. At the same time, the limiting effect of the sliding buckle on the outside of the connecting rod, together with the synchronous movement of the two sets of support rods, ensures that the threaded rod always maintains a stable movement trajectory when adjusting its length, avoiding jamming or deviation, and ensuring the smoothness and reliability of equipment operation. Attached Figure Description

[0015] Figure 1 This is one of the overall structural diagrams of a rebar protective layer thickness control device proposed in this utility model;

[0016] Figure 2 This is a partial structural diagram of a rebar protective layer thickness control device proposed in this utility model;

[0017] Figure 3 This is a partial structural diagram of a rebar protective layer thickness control device proposed in this utility model;

[0018] Figure 4 This is a partial structural cross-sectional view of a steel reinforcement protective layer thickness control device proposed in this utility model.

[0019] Legend:

[0020] 1. Reinforcing bar; 2. First clip; 3. Second clip; 4. Connecting rod; 5. Threaded sleeve; 6. Threaded rod; 7. Movable seat; 8. Limiting ring; 9. Fixing plate; 10. Space frame; 11. Sliding clip; 12. Support rod; 13. Connecting clip. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-4 An embodiment of this utility model is provided: a rebar protective layer thickness control device, including a first buckle 2 and a second buckle 3 installed on the outside of the rebar 1. Both the first buckle 2 and the second buckle 3 are connected to a connecting rod 4. A threaded sleeve 5 is connected to one side of the first buckle 2. A threaded rod 6 is threadedly connected inside the threaded sleeve 5. A limit ring 8 slides on the outside of the threaded sleeve 5. A fixing plate 9 is connected to one side of the limit ring 8. A grid frame 10 is installed between the limit ring 8 and the fixing plate 9.

[0023] A sliding buckle 11 is slidably attached to the outside of the connecting rod 4, and the other end of the sliding buckle 11 is movably connected to the outside of the limiting ring 8.

[0024] In an optional embodiment: the first clip 2 and the second clip 3 are sleeved on the outside of the reinforcing bar 1, and the first clip 2 and the second clip 3 are connected by bolts. In use, the worker fixes the first clip 2 and the second clip 3 to the outside of the reinforcing bar 1 by bolts.

[0025] In an optional embodiment: the threaded sleeve 5 is fixedly connected to the first snap fastener 2, and the threaded rod 6 is movably connected to the outer side of the movable seat 7. The movable seat 7 moves horizontally along the outer side of the threaded sleeve 5 by rotating the threaded rod 6. After the first snap fastener 2 and the second snap fastener 3 are fixed, the worker will then engage one end of the threaded rod 6 with the mold plate. When it is necessary to adjust the thickness of the concrete protective layer, the position of the threaded rod 6 inside the threaded sleeve 5 is controlled by rotating the threaded rod 6. When the threaded rod 6 moves, it will drive the mold plate to move synchronously. Since the mold plate is engaged with the threaded rod 6, the rotation of the threaded rod 6 will not be affected by the mold plate.

[0026] In an optional embodiment: four sets of brackets are connected to the outside of the movable seat 7, and the other end of the four sets of brackets is fixedly connected to the limiting ring 8. The fixed plate 9 is connected to the limiting ring 8 by bolts. As described above, when the threaded rod 6 rotates and moves, it will drive the movable seat 7 to move synchronously. When the movable seat 7 moves, because the movable seat 7 is rotatably connected to the threaded rod 6, the movable seat 7 will not rotate when the threaded rod 6 rotates. Before adjusting the position of the threaded rod 6, the workers will put the mesh frame 10 on one side of the limiting ring 8. After putting the mesh frame 10 on, the fixed plate 9 is then connected to the limiting ring 8 by bolts. At this time, the mesh frame 10 is fixed between the limiting ring 8 and the fixed plate 9. Then, when pouring concrete later, the fibers or metal wires of the mesh frame 10 can evenly distribute the shrinkage stress, temperature stress and external impact stress inside the protective layer, avoiding micro-cracks caused by stress concentration. Even if micro-cracks occur, the tension formed by the mesh frame 10 will hold the two ends of the crack, preventing it from extending further and maintaining the integrity of the protective layer.

[0027] As described above, when the threaded rod 6 moves, it will simultaneously drive the movable seat 7 to move. Since the movable seat 7 is connected to the limiting ring 8, when the threaded rod 6 moves to drive the mold plate to control the thickness of the protective layer, it will simultaneously drive the space frame 10 to move. Thus, when adjusting the mold plate, the space frame 10 is always in the preset position inside the protective layer, such as in the center or a specific area. This allows the space frame 10 to more effectively disperse the stress generated by concrete shrinkage and temperature changes, reduce cracks, and improve the crack resistance and durability of the protective layer when the space frame 10 is in a precise position and stable shape. At the same time, there is no need to adjust the position of the space frame 10 separately. The thickness control of the protective layer and the positioning of the space frame 10 can be completed simultaneously by adjusting the threaded rod 6, reducing multiple processes and reducing the tediousness and error of manual operation.

[0028] In an optional embodiment: two sets of connecting buckles 13 are fixedly connected to the lower end of the limiting ring 8, and support rods 12 are movably connected inside the two sets of connecting buckles 13. As described above, when the limiting ring 8 moves, it will drive the two sets of connecting buckles 13 to move simultaneously, and when the two sets of connecting buckles 13 move, it will pull the two sets of support rods 12 to move simultaneously.

[0029] In an optional embodiment: Sliding buckles 11 are slidably connected to the outer sides of both sets of connecting rods 4. The other end of the support rod 12 is movably connected inside the sliding buckle 11. The connection between the sliding buckle 11 and the connecting rod 4 has a certain damping force. As described above, when the two sets of support rods 12 move, they will simultaneously pull the two sets of sliding buckles 11 upwards on the outer side of the connecting rod 4. Because the threaded rod 6 extends a long distance, the weight at the other end will increase simultaneously, causing the threaded rod 6 to tilt. At this time, the limiting ring 8 will transfer the weight to the two sets of support rods 12, and the two sets of support rods 12 will transfer the gravity at the other end to the sliding buckle 11. The sliding buckle 11 is positioned outside the two sets of connecting rods 4. When adjusting the length of the threaded rod 6, the two sets of support rods 12 provide synchronous support. The stable support of the sliding buckle 11 on the connecting rods 4 provides symmetrical reverse support force to the threaded rod 6, counteracting the torque caused by gravity on one side and preventing the threaded rod 6 from tilting due to uneven force. At the same time, the limiting effect of the sliding buckle 11 on the outside of the connecting rods 4, together with the synchronous movement of the two sets of support rods 12, ensures that the threaded rod 6 maintains a stable movement trajectory during length adjustment, avoiding jamming or deviation, and ensuring the smoothness and reliability of equipment operation.

[0030] Working principle and process: When in use, the worker fixes the first buckle 2 and the second buckle 3 to the outside of the steel bar 1 with bolts. After fixing the first buckle 2 and the second buckle 3, the worker then engages one end of the threaded rod 6 with the mold plate. When it is necessary to adjust the thickness of the concrete protective layer, the worker controls the position of the threaded rod 6 inside the threaded sleeve 5 by rotating the threaded rod 6. When the threaded rod 6 moves, it will drive the mold plate to move synchronously.

[0031] When the threaded rod 6 rotates and moves, it will synchronously drive the movable seat 7 to move. When the movable seat 7 moves, because the movable seat 7 is rotatably connected to the threaded rod 6, the rotation of the threaded rod 6 will not drive the movable seat 7 to rotate. Before adjusting the position of the threaded rod 6, the worker will put the mesh frame 10 on one side of the limiting ring 8. After putting the mesh frame 10 on, the fixing plate 9 and the limiting ring 8 will be connected by bolts. At this time, the mesh frame 10 will be fixed between the limiting ring 8 and the fixing plate 9. When the threaded rod 6 moves, it will synchronously drive the movable seat 7 to move. At this time, because the movable seat 7 is connected to the limiting ring 8, when the threaded rod 6 moves and drives the mold plate to move to control the thickness of the protective layer, it will synchronously drive the mesh frame 10 to move.

[0032] When the limit ring 8 moves, it will simultaneously drive the two sets of connecting buckles 13 to move. When the two sets of connecting buckles 13 move, they will simultaneously pull the two sets of support rods 12 to move.

[0033] When the two sets of support rods 12 move, they will simultaneously pull the two sets of sliding buckles 11 to rise outside the connecting rod 4. As the threaded rod 6 extends a long distance, the weight at the other end will increase simultaneously, which will cause the threaded rod 6 to tilt. At this time, the limiting ring 8 will transfer the weight to the two sets of support rods 12, and the two sets of support rods 12 will transfer the gravity at the other end to the sliding buckle 11. The sliding buckle 11 will be limited to the outside of the two sets of connecting rods 4, so that when adjusting the length of the threaded rod 6, it will be supported synchronously by the two sets of support rods 12.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for controlling the thickness of the protective layer of reinforcing bars, comprising a first clip (2) and a second clip (3) installed on the outside of the reinforcing bar (1), characterized in that: Both the first buckle (2) and the second buckle (3) are connected to a connecting rod (4). A threaded sleeve (5) is connected to one side of the first buckle (2). A threaded rod (6) is threaded inside the threaded sleeve (5). A limiting ring (8) slides on the outside of the threaded sleeve (5). A fixing plate (9) is connected to one side of the limiting ring (8). A mesh frame (10) is installed between the limiting ring (8) and the fixing plate (9). The connecting rod (4) has a sliding buckle (11) sliding on its outer side, and the other end of the sliding buckle (11) is movably connected to the outer side of the limiting ring (8).

2. The rebar protective layer thickness control device according to claim 1, characterized in that: The first buckle (2) and the second buckle (3) are sleeved on the outside of the reinforcing bar (1), and the first buckle (2) and the second buckle (3) are connected by bolts.

3. The rebar protective layer thickness control device according to claim 1, characterized in that: The threaded sleeve (5) is fixedly connected to the first buckle (2), and the threaded rod (6) is movably connected to the outer side of the movable seat (7), and the movable seat (7) moves horizontally along the outer side of the threaded sleeve (5) by rotating the threaded rod (6).

4. The rebar protective layer thickness control device according to claim 3, characterized in that: The movable seat (7) is connected to four sets of brackets on the outside. The other end of the four sets of brackets is fixedly connected to a limiting ring (8). The fixing plate (9) and the limiting ring (8) are connected by bolts.

5. The rebar protective layer thickness control device according to claim 1, characterized in that: The lower end of the limiting ring (8) is fixedly connected to two sets of connecting buckles (13), and the two sets of connecting buckles (13) are movably connected to a support rod (12).

6. The rebar protective layer thickness control device according to claim 5, characterized in that: Both sets of connecting rods (4) are slidably connected to sliding buckles (11) on their outer sides, and the other end of the support rod (12) is movably connected inside the sliding buckle (11).

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