Reinforcing steel bar protective layer limiting device

Abstract

The utility model discloses a steel bar protective layer limiting device which comprises a lifting plate serving as an installation carrier, a first installation plate is arranged in the middle of the lower portion of the lifting plate, second installation plates are symmetrically arranged at the two ends of the lower portion of the lifting plate, and a connecting bearing is installed in the middle of the top of the first installation plate. And lifting sliding rods are symmetrically mounted in the middle positions of the tops of the two groups of second mounting plates. The lead screw is manually rotated to force the lifting plate to ascend, the lifting plate pulls the first sliding block to slide on the limiting sliding rod towards the lifting plate through the connecting rod, the bottom of the first sliding block is fixedly connected with the side baffles through the fixing devices, and then the two sets of side baffles are synchronously close to each other. The distance between the two groups of side baffles is accurately reduced, and the distances between the inner sides of the two groups of side baffles and the two sides of the steel bar frame are always kept the same, so that the thickness of a protective layer of the steel bar frame between the two groups of side baffles is accurately reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a steel bar protection layer limiting device. Background Technique

[0002] The concrete protection layer is used to protect steel bars in a building concrete structure. Considering the durability of concrete carbonation, depassivation and steel bar corrosion, the thickness of the concrete protection layer is calculated not from the outer edge of the longitudinal stressed steel bars, but from the outer edge of the outermost steel bars (including stirrups, structural bars, distribution bars, etc.). If the thickness of the protection layer is insufficient, cracks will appear prematurely in the concrete component, a large amount of water and carbon dioxide will invade, the steel bars will rust, the bond strength between the concrete and the steel bars will decrease, and at the same time, the steel bars will rust and expand, further aggravating the development of cracks in the concrete component, and seriously, it will lead to the destruction of the concrete component.

[0003] Currently, when pouring the concrete protection layer on the steel bar framework, the baffles on both sides of the protection layer still need to be manually limited and fixed, and it is difficult to accurately control the distance between the two baffles. Furthermore, the thickness of the protection layer on both sides of the steel bar framework cannot be accurately limited, thus affecting the actual effect of the steel bar protection layer; at the same time, when installing the baffles on both sides of the steel bar framework, it is impossible to quickly and accurately place the steel bar framework in the middle of the two groups of baffles, and thus it is impossible to accurately limit the distance between the steel bars on both sides of the steel bar framework and the two baffles to be the same. Furthermore, the thickness of the protection layer on both sides of the steel bar framework cannot be exactly the same, affecting the actual use effect of the steel bar protection layer. Content of the Utility Model

[0004] The purpose of the utility model is to provide a steel bar protection layer limiting device to solve the problems raised in the above background technique.

[0005] To achieve the above object, the utility model provides the following technical solutions: A steel bar protection layer limiting device, including a lifting plate as an installation carrier. At the middle position below the lifting plate, a first mounting plate is provided. At both ends below the lifting plate, second mounting plates are symmetrically arranged. At the middle position of the top of the first mounting plate, a connecting bearing is installed. At the middle positions of the tops of the two second mounting plates, lifting sliding rods are symmetrically installed. And the tops of the two lifting sliding rods respectively pass through both ends of the lifting plate and extend above the lifting plate. At the middle position of the top of the lifting plate, a lead screw is threadedly arranged. The bottom end of the outer side of the lead screw is fixedly connected with the inner ring of the connecting bearing. On both sides of the tops of the first mounting plate and the two second mounting plates, strip-shaped grooves are symmetrically opened. And at the middle position inside the strip-shaped groove, a limiting sliding rod is installed. On the outer sides of the six limiting sliding rods, first sliding blocks are sleeved. On the tops of the two relatively first sliding blocks, connecting rods are symmetrically hinged. And the tops of the two connecting rods are respectively hinged with the same end of both sides of the lifting plate. At the bottom of the first sliding block, a fixing device is installed. Inside the three fixing devices on the same side, a side baffle is jointly arranged. Below the two second mounting plates, positioning components are provided.

[0006] Preferably, the positioning component includes a second sliding block. On the outer sides of the two pairs of limiting sliding rods on the two second mounting plates, second sliding blocks are symmetrically sleeved. And the second sliding block is located between the first sliding block and the lead screw. At the bottom of the second sliding block, a strip-shaped plate is installed. At both ends of the bottom of the strip-shaped plate, positioning piles are symmetrically installed. At the bottom of the positioning pile, a positioning card slot is opened. Below the second mounting plate, a telescopic fence is provided. And the hinge shafts at both ends of the middle row of the telescopic fence are fixedly connected with the middle positions of the bottoms of the two strip-shaped plates. And the hinge shaft in the exact middle of the telescopic fence is fixedly connected with the middle position of the bottom of the second mounting plate.

[0007] Preferably, the fixing device includes a U-shaped frame and a wing nut. At the bottom of the first sliding block, a U-shaped frame is installed. And on the outer side of the U-shaped frame, a wing nut is threadedly arranged and is matched with the side baffle. The U-shaped frame is stuck on the top of the side baffle.

[0008] Preferably, at the top of the positioning pile, fixing screw holes are opened. At both ends of the top of the strip-shaped plate, fixing bolts are symmetrically threadedly arranged and are adapted to the fixing screw holes. At both ends of the bottom of the strip-shaped plate, limiting card slots are symmetrically installed and are matched with the positioning pile.

[0009] Preferably, at the tops of the second sliding block and the first sliding block, a first pointer and a second pointer are respectively arranged. On both sides at one end of the tops of the first mounting plate and the second mounting plate, length scale lines are symmetrically arranged.

[0010] Preferably, at both ends of the top of the lifting plate, reinforcing ribs are symmetrically installed. And the reinforcing ribs are in a right triangle structure.

[0011] Preferably, a hand wheel is installed at the top of the lead screw, and anti - detachment caps are installed at the tops of the two lifting slide rods.

[0012] Preferably, connecting plates are symmetrically installed at the middle positions of both ends of the first mounting plate, and one end of the connecting plate away from the first mounting plate is fixedly connected to the middle position of one end of the adjacent second mounting plate.

[0013] Preferably, the cross - section of the limit slide rod is square, and the surface of the limit slide rod is coated with lubricating oil.

[0014] Beneficial effects

[0015] Compared with the prior art, the utility model provides a steel bar protective layer limiting device, which has the following beneficial effects:

[0016] 1. After the side baffle is fixedly connected to the first sliding block through the fixing device in the utility model, the lead screw is manually rotated. Due to the thread action, the lifting plate is forced to rise. The lifting plate pulls the first sliding block to slide on the limit slide rod in the direction of the lifting plate through the connecting rod. Since the bottom of the first sliding block is fixedly connected to the side baffle through the fixing device, the two side baffles are synchronously close to each other, accurately reducing the distance between the two side baffles, and keeping the distance between the inner sides of the two side baffles and the two sides of the steel bar framework always the same. Thus, the thickness of the protective layer of the steel bar framework between the two side baffles is reduced. On the contrary, the thickness of the protective layer outside the steel bar framework is increased. By accurately controlling the thickness of the protective layer outside the steel bar, it helps to ensure the actual effect of the steel bar protective layer.

[0017] 2. In the utility model, according to the distance between the steel bars on both sides of the steel bar framework, the distance between the two strip plates is adjusted. Since the two strip plates are connected by a telescopic fence, the distance between the two strip plates approaching or moving away from each other is always synchronous, and the two strip plates on the same side are located directly above the adjacent side of the steel bar framework. Then, the four positioning piles on the same side are placed on the top - most steel bar on the outermost side of the steel bar framework, and the steel bar is clamped into the positioning slots at the bottoms of the four positioning piles. In this way, the two steel bars at the tops of both sides of the steel bar framework will contact the eight positioning piles, and then the steel bar framework is located in the exact middle position of the entire steel bar protective layer limiting device. After that, by adjusting the distance between the two side baffles, the thickness of the protective layers on both sides of the steel bar framework can be accurately and synchronously adjusted, making the thicknesses of the protective layers on both sides of the steel bar framework always exactly the same, ensuring the actual use effect of the steel bar protective layer. Brief description of the drawings

[0018] Figure 1 is a top - view schematic diagram of the utility model;

[0019] Figure 2 is a top - view schematic diagram of the utility model after the connecting rod is disassembled;

[0020] Figure 3 It is a top view schematic diagram of the first mounting plate of the present utility model;

[0021] Figure 4 It is a top view schematic diagram of the second mounting plate of the present utility model;

[0022] Figure 5 It is a bottom view schematic diagram of the second mounting plate of the present utility model;

[0023] Figure 6 It is a three-dimensional schematic diagram of the lifting plate of the present utility model;

[0024] Figure 7 It is a three-dimensional schematic diagram of the positioning pile of the present utility model;

[0025] Figure 8 It is a three-dimensional schematic diagram of the connection between the first sliding block and the U-shaped frame of the present utility model.

[0026] In the figure:

[0027] 10. Lifting plate; 11. Lead screw; 12. Lifting slide bar; 13. Reinforcing rib;

[0028] 20. First mounting plate; 21. Strip-shaped groove; 22. Limit slide bar; 23. First sliding block; 24. Fixing device; 241. U-shaped frame; 242. Wing nut; 25. Connecting rod; 26. Second mounting plate; 27. Connecting bearing; 28. Side baffle;

[0029] 30. Positioning component; 31. Second sliding block; 32. Strip-shaped plate; 33. Positioning pile; 34. Positioning card slot; 35. Telescopic fence. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] Such as Figure 1-8As shown in the figure, a steel bar protective layer limiting device includes a lifting plate 10 as an installation carrier. A first mounting plate 20 is arranged at the middle position below the lifting plate 10. Second mounting plates 26 are symmetrically arranged at both ends below the lifting plate 10. A connecting bearing 27 is installed at the middle position of the top of the first mounting plate 20. Lifting slide rods 12 are symmetrically installed at the middle positions of the tops of the two groups of second mounting plates 26. The top ends of the two groups of lifting slide rods 12 respectively pass through both ends of the lifting plate 10 and extend above the lifting plate 10. A lead screw 11 is threadedly arranged at the middle position of the top of the lifting plate 10. The bottom end of the outer side of the lead screw 11 is fixedly connected to the inner ring of the connecting bearing 27. Strip-shaped grooves 21 are symmetrically opened on both sides of the tops of the first mounting plate 20 and the two groups of second mounting plates 26. A limiting slide rod 22 is installed at the middle position inside the strip-shaped groove 21. First sliding blocks 23 are sleeved on the outer sides of the six groups of limiting slide rods 22. Connecting rods 25 are symmetrically hinged at the tops of the two opposite first sliding blocks 23. The top ends of the two groups of connecting rods 25 are respectively hinged to the same ends of both sides of the lifting plate 10. A fixing device 24 is installed at the bottom of the first sliding block 23. Side baffles 28 are jointly arranged inside the three groups of fixing devices 24 on the same side. Positioning components 30 are arranged below the two groups of second mounting plates 26.

[0032] In this embodiment, the positioning component 30 includes second sliding blocks 31. Second sliding blocks 31 are symmetrically sleeved on the outer sides of the two pairs of limiting slide rods 22 on the two groups of second mounting plates 26. The second sliding blocks 31 are located between the first sliding blocks 23 and the lead screw 11. A strip-shaped plate 32 is installed at the bottom of the second sliding block 31. Positioning piles 33 are symmetrically installed at both ends of the bottom of the strip-shaped plate 32. A positioning card slot 34 is opened at the bottom of the positioning pile 33. A telescopic fence 35 is arranged below the second mounting plate 26. The hinge shafts at both ends of the middle row of the telescopic fence 35 are fixedly connected to the middle positions of the bottoms of the two groups of strip-shaped plates 32 by fixed axes. The hinge shaft in the exact middle of the telescopic fence 35 is fixedly connected to the middle position of the bottom of the second mounting plate 26 by a fixed axis.

[0033] In this embodiment, the fixing device 24 includes a U-shaped frame 241 and a wing nut 242. A U-shaped frame 241 is installed at the bottom of the first sliding block 23. A wing nut 242 that cooperates with the side baffle 28 is threadedly arranged on the outer side of the U-shaped frame 241. The U-shaped frame 241 is stuck on the top of the side baffle 28. By sticking the U-shaped frame 241 on the top of the side baffle 28 and then tightening the wing nut 242, the side baffle 28 can be fixedly connected to the first sliding block 23.

[0034] In this embodiment, fixing screw holes are opened at the tops of the positioning piles 33. Fixing bolts that are adapted to the fixing screw holes are symmetrically threadedly arranged at both ends of the top of the strip-shaped plate 32. Limiting card slots that cooperate with the positioning piles 33 are symmetrically installed at both ends of the bottom of the strip-shaped plate 32, which is convenient for replacing the positioning piles 33 at the bottom of the strip-shaped plate 32 according to actual needs.

[0035] In this embodiment, a first pointer and a second pointer are respectively arranged at the tops of the second sliding block 31 and the first sliding block 23. Length scale lines are symmetrically arranged on both sides of one end at the tops of the first mounting plate 20 and the second mounting plate 26. By controlling the distance between the first pointer and the second pointer, the thickness of the protective layers on both sides of the steel bar framework can be accurately limited.

[0036] In this embodiment, reinforcing ribs 13 are symmetrically installed at both ends of the top of the lifting plate 10, and the reinforcing ribs 13 are in a right triangle structure, which helps to improve the structural strength of the lifting plate 10 itself.

[0037] In this embodiment, a hand wheel is installed at the top end of the lead screw 11, and anti - detachment caps are installed at the top ends of the two groups of lifting slide rods 12. The lead screw 11 can be conveniently rotated through the hand wheel, and the anti - detachment caps can prevent the lifting plate 10 from detaching from the lifting slide rods 12.

[0038] In this embodiment, connecting plates are symmetrically installed at the middle positions of both ends of the first mounting plate 20, and one end of the connecting plate far away from the first mounting plate 20 is fixedly connected to the middle position of one end of the adjacent second mounting plate 26, which helps to connect the first mounting plate 20 and the two groups of second mounting plates 26 into a whole and strengthen the structural strength of the entire steel bar protective layer limiting device.

[0039] In this embodiment, the cross - section of the limiting slide rod 22 is in a square structure, and the surface of the limiting slide rod 22 is coated with lubricating oil, which helps the first sliding block 23 and the second sliding block 31 to slide stably on the limiting slide rod 22.

[0040] Working principle: Before use, manually adjust the distance between the two sets of strip plates 32 according to the distance between the steel bars on both sides of the steel bar frame. During the process, the second sliding block 31 slides on the limit slide bar 22. Since the two sets of strip plates 32 are connected by the telescopic fence 35, the distance between the two sets of strip plates 32 approaching or moving away from each other is always synchronized, and the two sets of strip plates 32 on the same side are located directly above the adjacent side of the steel bar frame. Then, let the four positioning piles 33 on the same side rest on one of the steel bars at the outermost top of the steel bar frame, and let this steel bar be stuck into the positioning card slots 34 at the bottom of the four positioning piles 33. In this way, the two steel bars at the top of both sides of the steel bar frame will contact the eight positioning piles 33, so that the steel bar frame is located at the exact middle position of the entire steel bar protection layer limiting device. After that, clamp the three U-shaped frames 241 on the same side on the top of the same set of side baffles 28, and then tighten the butterfly bolts 242 to fixedly connect the side baffles 28 with the first sliding block 23. Subsequently, manually rotate the lead screw 11, and use the thread action to force the lifting plate 10 to rise. The two ends of the lifting plate 10 also slide on the two sets of lifting slide bars 12. The lifting plate 10 pulls the first sliding block 23 to slide on the limit slide bar 22 in the direction close to the lifting plate 10 through the connecting rod 25, so that the two sets of side baffles 28 approach each other synchronously, accurately reducing the distance between the two sets of side baffles 28. At this time, the vertical distance between the inner wall of the side baffle 28 and the positioning pile 33 is the thickness of the protection bins on both sides of the steel bar frame.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0042] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel bar protective layer limiting device, comprising a lifting plate (10) as a mounting carrier, characterized in that: A first mounting plate (20) is arranged at a middle position below the lifting plate (10), and second mounting plates (26) are symmetrically arranged at both ends below the lifting plate (10). A connecting bearing (27) is installed at a middle position on the top of the first mounting plate (20), and lifting slide bars (12) are symmetrically installed at a middle position on the top of two groups of the second mounting plates (26), and the top ends of the two groups of lifting slide bars (12) respectively pass through the two ends of the lifting plate (10) and extend to the top of the lifting plate (10). A screw rod (11) is threadedly arranged at a middle position on the top of the lifting plate (10), and the bottom end of the outer side of the screw rod (11) is fixedly connected to the inner ring of the connecting bearing (27). The first mounting plate (20) ) and two groups of second mounting plates (26) are symmetrically provided with strip grooves (21) on both sides of the top, and a limit slide bar (22) is installed at the middle position inside the strip groove (21), and the outer sides of the six groups of the limit slide bars (22) are sleeved with a first sliding block (23), and the tops of the two groups of the first sliding blocks (23) are symmetrically hinged with connecting rods (25), and the tops of the two groups of connecting rods (25) are respectively hinged to the same end on both sides of the lifting plate (10), and the bottom of the first sliding block (23) is installed with a fixing device (24), and the insides of the three groups of the fixing devices (24) on the same side are commonly provided with a side baffle (28), and the bottoms of the two groups of the second mounting plates (26) are provided with a positioning assembly (30).

2. A steel bar protective layer limiting device according to claim 1, characterized in that: The positioning assembly (30) comprises a second sliding block (31), the second sliding blocks (31) are symmetrically sleeved on the outer sides of the two pairs of limiting sliding bars (22) on the two groups of the second mounting plates (26), and the second sliding blocks (31) are located between the first sliding block (23) and the screw rod (11), a strip plate (32) is installed at the bottom of the second sliding block (31), positioning piles (33) are symmetrically installed at both ends of the bottom of the strip plate (32), and a positioning slot (34) is opened at the bottom of the positioning pile (33), a telescopic fence (35) is arranged below the second mounting plate (26), and the hinge shafts at both ends of the middle row of the telescopic fence (35) are connected to the fixed axis at the middle position of the bottom of the two groups of strip plates (32), and a group of hinge shafts in the middle of the telescopic fence (35) are connected to the fixed axis at the middle position of the bottom of the second mounting plate (26).

3. A steel bar protective layer limiting device according to claim 1, characterized in that: The fixing device (24) comprises a U-shaped frame (241) and a butterfly bolt (242); the U-shaped frame (241) is installed at the bottom of the first sliding block (23); and the outer side of the U-shaped frame (241) is provided with a butterfly bolt (242) that cooperates with the side baffle (28); and the U-shaped frame (241) is clamped on the top of the side baffle (28).

4. A steel bar protective layer limiting device according to claim 2, characterized in that: A fixing screw hole is provided at the top of the positioning pile (33), fixing bolts matching the fixing screw hole are symmetrically threaded at both ends of the top of the strip plate (32), and limiting slots matching the positioning pile (33) are symmetrically installed at both ends of the bottom of the strip plate (32).

5. A steel bar protective layer limiting device according to claim 2, characterized in that: A first pointer and a second pointer are respectively arranged on the top of the second sliding block (31) and the first sliding block (23), and length scale lines are symmetrically arranged on both sides of one end of the top of the first mounting plate (20) and the second mounting plate (26).

6. A steel bar protective layer limiting device according to claim 1, characterized in that: Reinforcing ribs (13) are symmetrically installed at both ends of the top of the lifting plate (10), and the reinforcing ribs (13) are in the shape of a right-angled triangle.

7. A steel bar protective layer limiting device according to claim 1, characterized in that: A hand wheel is installed at the top of the screw rod (11), and anti-drop caps are installed at the tops of the two sets of lifting slide bars (12).

8. A steel bar protective layer limiting device according to claim 1, characterized in that: Connecting plates are symmetrically mounted at the middle positions of both ends of the first mounting plate (20), and one end of the connecting plate away from the first mounting plate (20) is fixedly connected to the middle position of one end of an adjacent group of second mounting plates (26).

9. A steel bar protective layer limiting device according to claim 1, characterized in that: The cross section of the limiting sliding rod (22) is a square structure, and the surface of the limiting sliding rod (22) is coated with lubricating oil.

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