A prefabricated T-beam uses a reinforcement cover thickness control device

Abstract

The utility model relates to prefabricated beam technical field, and disclose a kind of prefabricated T beam using reinforcing bar cover thickness control device, the prefabricated T beam using reinforcing bar cover thickness control device, including base, the inside of base is hollow and both ends are slidably sleeved with extension plate, the upper surface of two described extension plates is all fixedly connected with two vertical boards, the side of two described vertical boards is all fixedly connected with a group of fixed blocks, between each group described fixed block, a group of sliding rods are all fixedly connected, the surface of each described sliding rod is slidably sleeved with multiple sliding sleeves, and between corresponding two described sliding sleeves, placement plate is fixedly connected;The surface of multiple described sliding sleeves on the sliding rod of two described upper is all set up movable groove, the thickness of reinforcing bar cover can be quickly adjusted limit when using this device, it is convenient for subsequent bundling and fixing, and the width between multiple reinforcing bars of reinforcing bar cover can be adjusted simultaneously, it is convenient and practical.

Description

Technical Field

[0001] This utility model relates to the field of precast beam technology, specifically to a device for controlling the thickness of the reinforcing steel protective layer used in precast T-beams. Background Technology

[0002] Precast beams are beams that are prefabricated in a factory and then transported to the construction site for installation and fixation according to design requirements. In the construction process of precast T-beams in a conventional beam yard, controlling the thickness of the reinforcing steel protective layer is a crucial factor affecting the durability and structural safety of the component.

[0003] In traditional construction, disposable positioning components such as mortar spacers and plastic clips are often used to fix the reinforcing steel cage. However, these traditional positioning components have obvious limitations: on the one hand, their dimensions are fixed, making it difficult to flexibly adjust the thickness of the concrete cover and the spacing of the reinforcing steel according to the requirements of different specifications of precast T-beams; on the other hand, disposable positioning components cannot be reused after use, which not only increases construction costs but also generates a large amount of construction waste, which is inconsistent with the concept of green construction. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for controlling the thickness of the concrete cover for precast T-beams, solving the problem of using disposable positioning devices such as mortar spacers and plastic clips to fix the reinforcing steel frame in traditional construction. However, these traditional positioning devices have significant limitations: firstly, their fixed dimensions make it difficult to flexibly adjust the thickness of the concrete cover and the spacing of the reinforcing steel bars according to the requirements of different specifications of precast T-beams; secondly, disposable positioning devices cannot be reused after use, which not only increases construction costs but also generates a large amount of construction waste, contradicting the concept of green construction.

[0005] This utility model provides the following technical solution: a device for controlling the thickness of the protective layer of steel bars for precast T-beams, including a base, the interior of which is hollow and both ends are slidably fitted with extension plates, the upper surfaces of the two extension plates are fixedly connected to two vertical plates, the sides of the two vertical plates are fixedly connected to a set of fixing blocks, a set of sliding rods is fixedly connected between each set of fixing blocks, and multiple sliding sleeves are slidably fitted on the surface of each sliding rod, and a placement plate is fixedly connected between corresponding two sliding sleeves;

[0006] The surfaces of the multiple sliding sleeves on the two upper sliding rods are provided with movable grooves, and a locking rod is slidably fitted inside each movable groove. A first spring is fitted on one end of the outer side of each locking rod. The surfaces of the two upper sliding rods are provided with a row of locking grooves that match the locking rods. Each set of fixing blocks is provided with a locking component.

[0007] Preferred technical solution 1: The locking assembly includes a pressure plate rotatably connected to one of the fixed blocks, the surface of the pressure plate has a through hole, a rod is slidably fitted inside the through hole, a second spring is fitted on one end of the outer side of the rod, and a slot matching the rod is provided on the other fixed block.

[0008] Preferred technical solution 2: Each of the placement plates has a placement groove on its surface, and a rubber pad is fixedly adhered inside each placement groove. The surface of each rubber pad has anti-slip texture.

[0009] Preferred technical solution 3: A bidirectional screw is rotatably installed inside the base. The opposing surfaces of the two extension plates are provided with threaded holes that match the bidirectional screw. The two extension plates are threadedly sleeved at both ends of the bidirectional screw through the threaded holes. An operating rod is rotatably connected to the upper surface of the base. The bottom end of the operating rod extends into the interior of the base and is fixedly sleeved with a first bevel gear. A second bevel gear is fixedly sleeved on the surface of the bidirectional screw. The first bevel gear and the second bevel gear mesh with each other.

[0010] Preferred technical solution four: A set of limiting rods is fixedly installed inside the base, and a set of limiting grooves are opened on the opposite sides of the two extension plates. The two extension plates are slidably sleeved on the set of limiting rods through the limiting grooves.

[0011] Preferred technical solution five: A support rod is fixedly installed on the lower surface of the base, and a support plate is fixedly connected to the bottom end of the support rod. The support rod can be a vertical rod with a fixed length or a telescopic rod with adjustable length and a self-locking function.

[0012] Compared with the prior art, this utility model provides a device for controlling the thickness of the concrete cover of precast T-beams, which has the following advantages: In use, the device is placed at the location of use, and the distance between the two vertical plates is adjusted according to the thickness of the concrete cover. Rotating the operating rod drives the first and second bevel gears to rotate, which in turn drives the bidirectional screw to rotate, causing the two extension plates to extend from the base. This allows adjustment of the distance between the two vertical plates, thus adjusting the thickness of the concrete cover. Simultaneously, when it is necessary to control and adjust the spacing between multiple rebars in the concrete cover, pulling the locking rod upwards to disengage it from the locking slot allows the corresponding sliding sleeves and placement plates to slide left and right, thereby adjusting the position of the multiple placement plates and adjusting the distance between the rebars. After adjustment, the rebars are placed vertically on the placement plates. Place the device inside the slot, then pull the insert rod outward and rotate the corresponding pressure plate until it reaches the fixing block on one side. Release the insert rod so that it inserts into the slot under the force of the second spring, thus locking the position of the pressure plate. The pressure plate, in conjunction with the placement plate, initially fixes the reinforcing bars, which can then be bundled. After bundling, pull the insert rod to disengage it from the slot and rotate the pressure plate to position it in the gap between the reinforcing bars. Simultaneously, rotate the operating rod in the opposite direction to retract the two extension plates inside the base. The device can then be removed from the bundled reinforcing bar protective layer for further use. During use, this device allows for quick adjustment and limiting of the thickness of the reinforcing bar protective layer according to actual needs, facilitating subsequent bundling and fixing. It also allows for adjustment of the width between multiple reinforcing bars in the protective layer, making it convenient and practical. Attached Figure Description

[0013] Figure 1 This is a front structural diagram of the present invention;

[0014] Figure 2 This is a side view of the present invention.

[0015] Figure 3 This is an exploded view of the vertical plate structure of this utility model;

[0016] Figure 4 This is a cross-sectional view of the internal structure of the base of this utility model.

[0017] In the diagram: 1. Base; 2. Extension plate; 3. Vertical plate; 4. Fixing block; 5. Sliding rod; 6. Sliding sleeve; 7. Placement plate; 8. Movable groove; 9. Locking rod; 10. First spring; 11. Locking groove; 12. Pressure plate; 13. Through hole; 14. Insert rod; 15. Slot; 16. Placement groove; 17. Bidirectional screw; 18. Operating rod; 19. First bevel gear; 20. Second bevel gear; 21. Limiting rod; 22. Second spring. Detailed Implementation

[0018] Please see Figures 1-4 ,

[0019] Example 1: A device for controlling the thickness of the concrete cover of a precast T-beam includes a base 1. The base 1 is hollow inside and has extension plates 2 slidably fitted at both ends. Two vertical plates 3 are fixedly connected to the upper surfaces of the two extension plates 2. A set of fixing blocks 4 are fixedly connected to the sides of the two vertical plates 3. A set of sliding rods 5 are fixedly connected between each set of fixing blocks 4. Multiple sliding sleeves 6 are slidably fitted on the surface of each sliding rod 5. A placement plate 7 is fixedly connected between two corresponding sliding sleeves 6.

[0020] The surfaces of multiple sliding sleeves 6 on the two upper sliding rods 5 are provided with movable grooves 8. Each movable groove 8 has a locking rod 9 slidably fitted inside. One end of each locking rod 9 is fitted with a first spring 10. The surfaces of the two upper sliding rods 5 are provided with a row of locking grooves 11 that match the locking rods 9. Each set of fixing blocks 4 is provided with a locking component.

[0021] Example 2: The difference between this example and Example 1 is that the locking component includes a pressure plate 12 rotatably connected to one of the fixing blocks 4. The surface of the pressure plate 12 has a through hole 13. A rod 14 is slidably fitted inside the through hole 13. A second spring 24 is fitted on one end of the outer side of the rod 14. The other fixing block 4 has a slot 15 that matches the rod 14, which facilitates the initial limiting and fixing of the reinforcing bar.

[0022] Example 3: The difference between this example and Example 1 is that each placement plate 7 has a placement groove 16 on its surface, and a rubber pad is fixedly attached inside each placement groove 16. Each rubber pad has anti-slip texture on its surface to facilitate the placement of reinforcing bars.

[0023] Example 4: The difference between this example and Example 1 is that a bidirectional screw 17 is rotatably installed inside the base 1, and threaded holes matching the bidirectional screw 17 are opened on the opposite surfaces of the two extension plates 2. The two extension plates 2 are threadedly sleeved on both ends of the bidirectional screw 17 through the threaded holes. An operating rod 18 is rotatably connected to the upper surface of the base 1. The bottom end of the operating rod 18 extends into the interior of the base 1 and is fixedly sleeved with a first bevel gear 19. A second bevel gear 20 is fixedly sleeved on the surface of the bidirectional screw 17. The first bevel gear 19 and the second bevel gear 20 mesh with each other, which facilitates the adjustment and fixing of the thickness of the steel reinforcement protective layer.

[0024] Example 5: The difference between this example and Example 1 is that a set of limiting rods 21 are fixedly installed inside the base 1, and a set of limiting grooves are opened on the opposite sides of the two extension plates 2. The two extension plates 2 are slidably sleeved on the set of limiting rods 21 through the limiting grooves.

[0025] In summary, this precast T-beam uses a rebar cover thickness control device. During use, the device is placed at the location of application, and the distance between the two vertical plates 3 is adjusted according to the rebar cover thickness. Rotating the operating lever 18 drives the first bevel gear 19 and the second bevel gear 20 to rotate, which in turn drives the bidirectional screw 17 to rotate. This causes the two extension plates 2 to extend from the base 1, thus adjusting the distance between the two vertical plates 3 and consequently, the rebar cover thickness. Simultaneously, when it is necessary to control and adjust the spacing between multiple rebars in the rebar cover, pulling the locking lever 9 upwards to disengage it from the locking slot 11 allows the corresponding sliding sleeve 6 and placement plate 7 to slide left and right, adjusting the position of the multiple placement plates 7 and thus adjusting the distance between the rebars. After adjustment, the rebar is placed vertically inside the placement slot 16 of the placement plate 7, and then the insertion lever is pulled outwards. The rod 14 is rotated and the corresponding pressure plate 12 is rotated until the pressure plate 12 is rotated to the fixing block 4 on one side. Then the rod 14 is released and inserted into the slot 15 under the elastic force of the second spring 24, thereby locking the position of the pressure plate 12. The reinforcement is initially fixed by the cooperation of the pressure plate 12 and the placement plate 7, and then it can be tied and fixed. After the tying is completed, the rod 14 is pulled to disengage it from the slot 15, and the pressure plate 12 is rotated to be located in the gap between the reinforcements. At the same time, the operating rod 18 is rotated in the opposite direction to retract the two extension plates 2 into the base 1. Then the device can be removed from the protective layer of the tied reinforcement for the next use. When using the device, the thickness of the protective layer of the reinforcement can be quickly adjusted and limited according to the actual use needs, which is convenient for subsequent tying and fixing. At the same time, the width between multiple reinforcements in the protective layer of the reinforcement can be adjusted, which is convenient and practical.

Claims

1. A device for controlling the thickness of the concrete cover for precast T-beams, comprising a base (1), characterized in that: The base (1) is hollow inside and has extension plates (2) slidably fitted at both ends. Two vertical plates (3) are fixedly connected to the upper surface of the two extension plates (2). A set of fixing blocks (4) is fixedly connected to the side of the two vertical plates (3). A set of sliding rods (5) is fixedly connected between each set of fixing blocks (4). Multiple sliding sleeves (6) are slidably fitted on the surface of each sliding rod (5). A placement plate (7) is fixedly connected between two corresponding sliding sleeves (6). The surfaces of the multiple sliding sleeves (6) on the two upper sliding rods (5) are provided with movable grooves (8), and each movable groove (8) is slidably fitted with a locking rod (9). A first spring (10) is fitted on one end of the outer side of each locking rod (9). The surfaces of the two upper sliding rods (5) are provided with a row of locking grooves (11) that match the locking rods (9). Each set of fixing blocks (4) is provided with a locking component.

2. The device for controlling the thickness of the reinforcing steel protective layer for precast T-beams according to claim 1, characterized in that: The locking assembly includes a pressure plate (12) rotatably connected to one of the fixing blocks (4), the surface of the pressure plate (12) having a through hole (13), a plug rod (14) being slidably fitted inside the through hole (13), a second spring (22) being fitted on one end of the plug rod (14), and a slot (15) matching the plug rod (14) being provided on the other fixing block (4).

3. The device for controlling the thickness of the reinforcing steel protective layer for precast T-beams according to claim 2, characterized in that: Each of the placement plates (7) has a placement groove (16) on its surface, and a rubber pad is fixedly attached inside each placement groove (16). Each rubber pad has anti-slip texture on its surface.

4. The device for controlling the thickness of the concrete cover for precast T-beams according to claim 1, characterized in that: A bidirectional screw (17) is rotatably mounted inside the base (1). The opposing surfaces of the two extension plates (2) are provided with threaded holes that match the bidirectional screw (17). The two extension plates (2) are threadedly fitted onto the two ends of the bidirectional screw (17) through the threaded holes. An operating rod (18) is rotatably connected to the upper surface of the base (1). The bottom end of the operating rod (18) extends into the interior of the base (1) and is fixedly fitted with a first bevel gear (19). A second bevel gear (20) is fixedly fitted onto the surface of the bidirectional screw (17). The first bevel gear (19) and the second bevel gear (20) mesh with each other.

5. The device for controlling the thickness of the concrete cover for precast T-beams according to claim 1, characterized in that: A set of limiting rods (21) is fixedly installed inside the base (1). A set of limiting grooves is opened on the opposite sides of the two extension plates (2). The two extension plates (2) are slidably sleeved on the set of limiting rods (21) through the limiting grooves.

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