A Deformation Detection Device for Reinforced Concrete Structures

Abstract

This utility model relates to the field of reinforced concrete structure testing technology, and in particular to a reinforced concrete structure deformation testing device, comprising a base, a fixing frame fixedly installed on the upper surface of the base, a guide rod fixedly installed on the inner side of the fixing frame, a bearing platform slidably provided on the outer side of the guide rod, a sliding frame fixedly installed at the lower end of the bearing platform, a bidirectional lead screw rotatably installed on the inner side of the base, the sliding frame threadedly sleeved on the outer side of the bidirectional lead screw, a servo electric cylinder fixedly installed on the top of the fixing frame, and a dial indicator connected to one side of the base through a linkage mechanism. This reinforced concrete structure deformation testing device can test the deformation resistance performance of the structure and is worthy of promotion.

Description

Technical Field

[0001] This utility model relates to the field of reinforced concrete structure testing technology, and in particular to a device for detecting deformation of reinforced concrete structures. Background Technology

[0002] Reinforced concrete structures are structures made of reinforced concrete with steel bars. The main load-bearing components of a building are constructed of reinforced concrete, therefore, appropriate quality testing is required to ensure the quality and safety of the building. Testing the deformation resistance of reinforced concrete structures involves applying pressure. Under pressure, the structure will deform; however, this minute deformation is difficult to observe with the naked eye, and ordinary measuring rulers are not convenient for accurately measuring the deformation, affecting the testing results. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies where deformation is small and difficult to measure, and to propose a deformation detection device for reinforced concrete structures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A deformation detection device for reinforced concrete structures is designed, comprising a base, a fixed frame fixedly installed on the upper surface of the base, a guide rod fixedly installed on the inner side of the fixed frame, a bearing platform slidably provided on the outer side of the guide rod, a sliding frame fixedly installed at the lower end of the bearing platform, a bidirectional lead screw rotatably installed on the inner side of the base, the sliding frame being threaded onto the outer side of the bidirectional lead screw, a servo electric cylinder fixedly installed on the top of the fixed frame, and a dial indicator connected to one side of the base through a linkage mechanism.

[0006] Preferably, the bidirectional lead screw and the guide rod are parallel in length direction and are both horizontally arranged.

[0007] Preferably, the linkage mechanism includes a reciprocating lead screw, which is rotatably mounted on one side of the base. A linkage block is threadedly sleeved on the outer side of the reciprocating lead screw. An installation plate is fixedly installed on the upper end of the linkage block. A fixing rod is fixedly installed on the end of the installation plate. A lifting plate is sleeved on the outer side of the fixing rod. The dial indicator is internally sleeved and connected to the lifting plate.

[0008] Preferably, the fixed rod is vertically arranged in the length direction, and the reciprocating screw is horizontally arranged in the length direction and parallel to the length direction of the bidirectional screw.

[0009] Preferably, the servo electric cylinder is vertically oriented along its length and has a pad fixedly installed at its bottom.

[0010] Preferably, a baffle is fixedly installed on the inner sidewall surface of the base.

[0011] Preferably, both the support platform and the sliding frame are provided in pairs, and the pair of sliding frames are respectively matched with the two ends of the bidirectional screw thread with opposite rotation directions.

[0012] Preferably, the baffle is located above the bidirectional lead screw and on both sides of the sliding frame.

[0013] The present invention proposes a deformation detection device for reinforced concrete structures, which has the following advantages: During operation, the device uses a bidirectional screw rod to move the sliding frames closer or further apart, allowing for adjustments to the spacing between the bearing platforms according to the dimensions of the reinforced concrete slab structure to be tested. A dial indicator can be used to compare the changes in the structure before and after applying pressure. The dial indicator has a relatively accurate detection range and can precisely measure deformation within a small range. Combined with visual observation of the structure's appearance, the device can detect the deformation resistance of the structure under test. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a deformation detection device for reinforced concrete structures proposed in this utility model. Figure 1 ;

[0015] Figure 2 A three-dimensional structural diagram of a deformation detection device for reinforced concrete structures proposed in this utility model. Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the structure of a reinforced concrete structure deformation detection device proposed in this utility model.

[0017] In the diagram: 1. Base; 2. Two-way lead screw; 3. Sliding frame; 4. Bearing platform; 5. Fixed frame; 6. Guide rod; 7. Servo electric cylinder; 8. Pad plate; 9. Reciprocating lead screw; 10. Linkage block; 11. Mounting plate; 12. Fixed rod; 13. Lifting plate; 14. Dial indicator; 15. Baffle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example 1: Refer to Figure 1-3A deformation detection device for reinforced concrete structures includes a base 1, a fixing frame 5 fixedly mounted on the upper surface of the base 1, a guide rod 6 fixedly mounted on the inner side of the fixing frame 5, and a bearing platform 4 slidably mounted on the outer side of the guide rod 6. The inner side of the bearing platform 4 is used to support the reinforced concrete structural component to be tested. Screws are threaded to both ends of the bearing platform 4, which fix the position of the structural component and secure it to the bearing platform 4. The support of the bearing platform 4 by the guide rod 6 greatly improves the bearing capacity of the bearing platform 4, ensuring sufficient pressure resistance and preventing damage to the bidirectional screw 2 due to excessive pressure.

[0020] A sliding frame 3 is fixedly installed at the lower end of the support platform 4. A bidirectional lead screw 2 is rotatably installed inside the base 1. The sliding frame 3 is threaded onto the outside of the bidirectional lead screw 2. The bidirectional lead screw 2 and the guide rod 6 are parallel in length and are both horizontally arranged. The end of the bidirectional lead screw 2 is connected to an external motor, which is fixedly installed inside the base 1. The motor can drive the bidirectional lead screw 2 to rotate. There is a pair of sliding frames 3 for both the support platform 4 and the sliding frame 3. The pair of sliding frames 3 are respectively engaged with the two ends of the bidirectional lead screw 2 with opposite rotation directions. The rotation of the bidirectional lead screw 2 can drive the sliding frames 3 to move closer or further away from each other at the same time, thereby adjusting the distance between the support platforms 4 and adjusting the position of the support platform 4 according to the specific dimensions of the structural components.

[0021] A servo electric cylinder 7 is fixedly installed on the top of the mounting bracket 5. The end of the servo electric cylinder 7 can move downward to apply pressure to the middle of the reinforced concrete structure. Since the middle of the structure under test is suspended, if the structure's deformation resistance is poor when it is subjected to large pressure, the structure may deform or crack. This allows for the testing of the structure's deformation resistance performance. The servo electric cylinder 7 is vertically arranged along its length, and a pad 8 is fixedly installed at its bottom. The pad 8 between the servo electric cylinder 7 and the structure provides protection, preventing damage to the structural surface due to the small contact area between the lower end of the servo electric cylinder 7 and the structure. The pad 8 increases the stress-bearing area of ​​the structure during the pressure application by the servo electric cylinder 7, effectively preventing damage to the structural surface.

[0022] A dial indicator 14 is connected to one side of the base 1 via a linkage mechanism. The dial indicator 14 can detect the deformation of the surface of the structural components. The linkage mechanism includes a reciprocating lead screw 9, which is rotatably mounted on one side of the base 1. A linkage block 10 is threaded onto the outer side of the reciprocating lead screw 9. Rotation of the reciprocating lead screw 9 can drive the linkage block 10 to move. A mounting plate 11 is fixedly mounted on the upper end of the linkage block 10. Movement of the linkage block 10 can drive movement of the mounting plate 11. A fixing rod 12 is fixedly mounted on the end of the mounting plate 11. The fixing rod 12 is vertically arranged in the length direction. Movement of the mounting plate 11 can drive movement of the fixing rod 12.

[0023] The reciprocating lead screw 9 is horizontally positioned along its length and parallel to the length of the bidirectional lead screw 2. A motor is connected to the end of the reciprocating lead screw 9, which is fixed inside the base 1 via a base. The motor drives the reciprocating lead screw 9 to rotate, which in turn drives the linkage block 10 to move. The movement of the linkage block 10 drives the fixed rod 12 to move via the mounting plate 11. A lifting plate 13 is sleeved on the outside of the fixed rod 12, and a dial indicator 14 is sleeved and connected to the inside of the lifting plate 13. The movement of the fixed rod 12 drives the dial indicator 14 to move via the lifting plate 13. The measuring head at the lower end of the installed and adjusted dial indicator 14 abuts against the upper surface of the structural component. By driving the dial indicator 14 to move, the flatness of the upper surface of the structural component can be detected, thereby detecting the overall deformation of the structural component.

[0024] Working Principle: During operation, this reinforced concrete structure deformation detection device, based on the dimensions of the reinforced concrete slab structure to be tested, drives the bidirectional lead screw 2 to move the sliding frame 3 closer or further apart, thereby adjusting the spacing between the bearing platforms 4. The reinforced concrete slab structure to be tested is placed on the bearing platform 4 and fixed by screws. At this time, the height of the dial indicator 14 is adjusted according to the height of the upper surface of the structure, so that the measuring head of the dial indicator 14 contacts the upper surface of the structure, creating a certain preload. To facilitate reading, the dial indicator 14 is rotated until its pointer points to the 0 mark, which starts the motor and drives the reciprocating lead screw 9 to rotate. The rotation of the reciprocating lead screw 9 drives... The linkage block 10 moves, which in turn drives the dial indicator 14 to move via the mounting plate 11. As the dial indicator 14 moves along the upper surface of the structure, it can perform a preliminary test on the flatness of the structure surface. The changes in the pointer of the dial indicator 14 are constantly monitored and recorded. Then, the servo electric cylinder 7 is activated to drive the pad 8 downward. The pad 8 presses down on the upper surface of the middle part of the structure. The structure will deform under pressure. At this time, the flatness of the upper surface of the structure is tested again by the dial indicator 14 and recorded. This allows for a comparison of the changes in the structure before and after the pressure is applied, and the presence of cracks or other defects on the surface can be visually observed. This allows for the testing of the deformation resistance of the structure under test.

[0025] Example 2: In Example 1, if cracks or other issues occur in the structure under test during the testing process, concrete fragments will fall off. These fragments can easily damage the surface of the bidirectional lead screw 2, and residual fine impurities may even clog the screw, affecting its normal transmission function. Therefore, this example is proposed. (Refer to...) Figure 3As another preferred embodiment of this utility model, based on embodiment 1, a baffle 15 is fixedly installed on the inner side wall surface of the base 1. The baffle 15 is located above the bidirectional lead screw 2 and on both sides of the sliding frame 3. The baffle 15 will not affect the movement of the sliding frame 3. The baffle 15 is set above the bidirectional lead screw 2. When gravel falls, the gravel either falls on the surface of the base 1 or falls through the gap between the two baffles 15, which is not easy to damage the bidirectional lead screw 2.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A deformation detection device for reinforced concrete structures, comprising a base (1), characterized in that, A fixed frame (5) is fixedly installed on the upper surface of the base (1). A guide rod (6) is fixedly installed on the inner side of the fixed frame (5). A bearing platform (4) is slidably provided on the outer side of the guide rod (6). A sliding frame (3) is fixedly installed at the lower end of the bearing platform (4). A two-way screw (2) is rotatably installed on the inner side of the base (1). The sliding frame (3) is threaded onto the outer side of the two-way screw (2). A servo electric cylinder (7) is fixedly installed on the top of the fixed frame (5). A dial indicator (14) is connected to one side of the base (1) through a linkage mechanism.

2. The deformation detection device for reinforced concrete structures according to claim 1, characterized in that, The bidirectional lead screw (2) and guide rod (6) are parallel in length direction and are both horizontally arranged.

3. The deformation detection device for reinforced concrete structures according to claim 1, characterized in that, The linkage mechanism includes a reciprocating lead screw (9), which is rotatably mounted on one side of the base (1). A linkage block (10) is threaded on the outer side of the reciprocating lead screw (9). An installation plate (11) is fixedly installed on the upper end of the linkage block (10). A fixing rod (12) is fixedly installed on the end of the installation plate (11). A lifting plate (13) is sleeved on the outer side of the fixing rod (12). The dial indicator (14) is internally connected to the lifting plate (13).

4. The deformation detection device for reinforced concrete structures according to claim 3, characterized in that, The fixed rod (12) is vertically arranged in the length direction, and the reciprocating screw (9) is horizontally arranged in the length direction and parallel to the length direction of the bidirectional screw (2).

5. The deformation detection device for reinforced concrete structures according to claim 1, characterized in that, The servo electric cylinder (7) is vertically arranged in the length direction and a pad (8) is fixedly installed at its bottom.

6. The deformation detection device for reinforced concrete structures according to claim 1, characterized in that, A baffle (15) is fixedly installed on the inner wall surface of the base (1).

7. The deformation detection device for reinforced concrete structures according to claim 6, characterized in that, The support platform (4) and the sliding frame (3) are each provided with a pair, and the pair of sliding frames (3) are respectively matched with the two ends of the double-ended screw (2) with opposite rotation directions.

8. The deformation detection device for reinforced concrete structures according to claim 7, characterized in that, The baffle (15) is located above the bidirectional lead screw (2) and on both sides of the sliding frame (3).

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