Full-automatic hydraulic loading and automatic measurement concrete creep instrument

Abstract

The utility model relates to the technical field of concrete creep, and discloses a full-automatic hydraulic loading automatic measurement concrete creep instrument, which comprises a bottom plate and a connecting plate, the top of the bottom plate is symmetrically and fixedly connected with fixing blocks, a fixing rod is fixedly connected between every two fixing blocks, the outer part of each fixing rod is symmetrically and slidably connected with a sliding sleeve, and the connecting plate is fixedly connected with the bottom plate. The concrete column drives a second triangular plate to move, the second triangular plate extrudes a second spring, the second spring applies pressure to a connecting plate, the connecting plate drives a fixing seat to move, the fixing seat drives a connecting rod to rotate, and the connecting rod drives a sliding sleeve to move when rotating. When a sliding sleeve moves, a first spring is extruded to deform, meanwhile, when a connecting plate moves, a fixing head is driven to move, when the fixing head moves, a third spring is extruded and a guide rod is driven to move, multiple sets of buffering force and downward pressure of a hydraulic cylinder are used in a conflicting mode, and therefore creep data of the concrete column is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete creep, and particularly relates to a full-automatic hydraulic loading and automatic measuring concrete creep meter. Background Art

[0002] Concrete creep refers to the phenomenon that concrete will gradually deform under long-term stress. This deformation is caused by the rearrangement of the internal microstructure of concrete and the continuous deformation of the material. Creep can lead to structural instability and damage, so it needs to be fully considered in engineering design and structural evaluation.

[0003] Chinese Patent CN211784832U discloses a full-automatic concrete creep meter, which includes a base, a middle plate and a control cabinet. The top of the base is provided with a bottom connecting plate through an installation groove, and the top of the bottom connecting plate is fixed with a spring group by bolts. The top of the spring group is fixed with a bottom plate by bolts, and the top of the bottom plate is fixed with a pressure sensor by bolts. A test piece is arranged on the top of the pressure sensor, and ball hinge devices are arranged at both the top and the bottom of the test piece. Sensor brackets are sleeved at both ends of the outer side of the test piece, and a sensor support rod is welded between the sensor brackets.

[0004] The above patent can pressurize to the pressure required by the test and maintain a constant pressure, and can automatically collect and record the deformation amount. However, in the actual use process, the deformation amount data is not accurate enough. To solve the above problems, a full-automatic hydraulic loading and automatic measuring concrete creep meter is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a full-automatic hydraulic loading and automatic measuring concrete creep meter to solve the above problems and solve the problems mentioned in the background art.

[0006] To solve the above problems, the utility model provides a technical solution:

[0007] A full-automatic hydraulic loading and automatic measuring concrete creep meter includes a bottom plate and a connecting plate. Fixed blocks are symmetrically and fixedly connected to the top of the bottom plate. Fixed rods are fixedly connected between every two fixed blocks. Sliding sleeves are symmetrically and slidably connected to the outside of each fixed rod. First springs are fixedly connected between every two sliding sleeves. Connecting rods are rotatably connected to the outside of each sliding sleeve. Fixed seats are symmetrically and fixedly connected to the bottom of the connecting plate. Each fixed seat is rotatably connected to the corresponding connecting rod.

[0008] As a preferred embodiment of the present utility model, a first triangular plate is fixedly connected to the top of the connecting plate. A plurality of second springs are fixedly connected to the top of the first triangular plate at equal intervals. A second triangular plate is arranged on the top of the second springs. A threaded rod is slidably connected to the inside of the second triangular plate at equal intervals, and the bottom end of each threaded rod is fixedly connected to the upper surface of the first triangular plate.

[0009] As a preferred embodiment of the present utility model, a pressure sensor is arranged on the top of the second triangular plate. A concrete column is arranged on the top of the pressure sensor. A third triangular plate is sleeved on the outside of a plurality of threaded rods. A hydraulic cylinder is fixedly connected to the inside of the third triangular plate. A pressing plate is fixedly connected to the telescopic end of the hydraulic cylinder, and the bottom of the pressing plate is in contact with the upper surface of the concrete column. Tightening nuts are symmetrically arranged on the outside of the third triangular plate, and each tightening nut is threadedly connected to the corresponding threaded rod.

[0010] As a preferred embodiment of the present utility model, a first L-shaped clamp is symmetrically sleeved on the outside of the concrete column. A second L-shaped clamp is symmetrically arranged on the outside of the concrete column. A fixing bolt is symmetrically fixedly connected between each first L-shaped clamp and the second L-shaped clamp.

[0011] As a preferred embodiment of the present utility model, a U-shaped clamp is fixedly connected to the outside of each first L-shaped clamp. A tightening bolt is threadedly connected to the inside of each U-shaped clamp. A displacement sensor is arranged between the two U-shaped clamps.

[0012] As a preferred embodiment of the present utility model, fixing heads are symmetrically fixedly connected to the bottom of the connecting plate. A guide rod is fixedly connected to the bottom end of each fixing head. A third spring is fixedly connected to the bottom end of each fixing head, and the other end of each third spring is fixedly connected to the upper surface of the bottom plate. Guide holes for cooperating with the guide rods are symmetrically formed in the inside of the bottom plate.

[0013] The beneficial effects of the present utility model are as follows: The hydraulic cylinder drives the pressing plate to move, the pressing plate continuously presses the concrete column, the concrete column drives the second triangular plate to move, the second triangular plate squeezes the second spring, the second spring applies the pressure to the connecting plate, the connecting plate drives the fixed seat to move, the fixed seat drives the connecting rod to rotate, when the connecting rod rotates, it drives the sliding sleeve to move, when the sliding sleeve moves, it squeezes the first spring and causes it to deform. At the same time, when the connecting plate moves, it drives the fixing head to move, when the fixing head moves, it squeezes the third spring and drives the guide rod to move. Multiple sets of buffer forces conflict with the downward pressure of the hydraulic cylinder, so as to make the creep data of the concrete column more accurate. Description of the Drawings

[0014] For the sake of easy explanation, the present utility model will be described in detail by the following specific embodiments and drawings.

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the connection structure of the fixing rod of the present utility model;

[0017] Figure 3 is a schematic diagram of the connection structure of the displacement sensor of the present utility model.

[0018] In the figure: 1, base plate; 2, connecting plate; 3, fixing block; 4, fixing rod; 5, sliding sleeve; 6, first spring; 7, connecting rod; 8, fixing seat; 9, first triangular plate; 10, second spring; 11, second triangular plate; 12, threaded rod; 13, pressure sensor; 14, concrete column; 15, third triangular plate; 16, hydraulic cylinder; 17, pressing plate; 18, first L-shaped clamp; 19, second L-shaped clamp; 20, fixing bolt; 21, U-shaped clamp; 22, fastening bolt; 23, displacement sensor; 24, fastening nut; 25, fixing head; 26, guide rod; 27, third spring; 28, guide hole. Specific embodiments

[0019] 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.

[0020] Embodiment

[0021] Please refer to Figure 1 - Figure 3 , the present utility model provides a technical solution: a full-automatic hydraulic loading and automatic measurement concrete creep meter, including a base plate 1 and a connecting plate 2. The connecting plate 2 drives the fixing seat 8 to move. When the connecting plate 2 moves, it drives the fixing head 25 to move. The fixing blocks 3 are symmetrically and fixedly connected to the top of the base plate 1. The fixing rods 4 are fixedly connected between every two fixing blocks 3. The sliding sleeves 5 are symmetrically and slidably connected to the outside of each fixing rod 4. When the sliding sleeve 5 moves, it squeezes the first spring 6, causing it to deform. The first springs 6 are fixedly connected between every two sliding sleeves 5. The connecting rods 7 are rotatably connected to the outside of each sliding sleeve 5. When the connecting rod 7 rotates, it drives the sliding sleeve 5 to move. The fixing seats 8 are symmetrically and fixedly connected to the bottom of the connecting plate 2. The fixing seat 8 drives the connecting rod 7 to rotate. Each fixing seat 8 is rotatably connected to the corresponding connecting rod 7. The fixing heads 25 are symmetrically and fixedly connected to the bottom of the connecting plate 2. When the fixing head 25 moves, it squeezes the third spring 27 and drives the guide rod 26 to move. The guide rods 26 are fixedly connected to the bottom end of each fixing head 25. The third springs 27 are fixedly connected to the bottom end of each fixing head 25, and the other end of each third spring 27 is fixedly connected to the upper surface of the base plate 1. The guide holes 28 for cooperating with the guide rods 26 are symmetrically opened in the inside of the base plate 1.

[0022] Furthermore, a first triangular plate 9 is fixedly connected to the top of the connecting plate 2. A plurality of second springs 10 are fixedly connected to the top of the first triangular plate 9 at equal intervals. The second springs 10 apply pressure to the connecting plate 2. A second triangular plate 11 is arranged on the top of the second springs 10. The second triangular plate 11 presses the second springs 10. A plurality of threaded rods 12 are slidably connected to the inside of the second triangular plate 11 at equal intervals, and the bottom end of each threaded rod 12 is fixedly connected to the upper surface of the first triangular plate 9. A pressure sensor 13 is arranged on the top of the second triangular plate 11. A concrete column 14 is arranged on the top of the pressure sensor 13. The concrete column 14 is placed above the pressure sensor 13. The concrete column 14 drives the second triangular plate 11 to move. A third triangular plate 15 is sleeved on the outside of the plurality of threaded rods 12. A hydraulic cylinder 16 is fixedly connected to the inside of the third triangular plate 15. The hydraulic cylinder 16 drives a pressing disc 17 to move. The telescopic end of the hydraulic cylinder 16 is fixedly connected to the pressing disc 17. The pressing disc 17 continuously presses the concrete column 14, and the bottom of the pressing disc 17 is in contact with the upper surface of the concrete column 14. Tightening nuts 24 are symmetrically arranged on the outside of the third triangular plate 15. By rotating the tightening nuts 24, the third triangular plate 15 is moved above the concrete column 14, and then the tightening nuts 24 are locked. Each tightening nut 24 is threadedly connected to the corresponding threaded rod 12.

[0023] Furthermore, a first L-shaped clamp 18 is symmetrically sleeved on the outside of the concrete column 14. A second L-shaped clamp 19 is symmetrically arranged on the outside of the concrete column 14. Fixing bolts 20 are symmetrically and fixedly connected between each first L-shaped clamp 18 and the second L-shaped clamp 19. A U-shaped clamp 21 is fixedly connected to the outside of each first L-shaped clamp 18. A fastening bolt 22 is threadedly connected to the inside of each U-shaped clamp 21. By rotating the fastening bolt 22, the support rod of the displacement sensor 23 is locked, thereby fixing the displacement sensor 23. A displacement sensor 23 is arranged between the two U-shaped clamps 21.

[0024] In summary, when creep testing of the concrete column 14 is required, place the concrete column 14 above the pressure sensor 13. Rotate the fastening nut 24 to move the third triangular plate 15 above the concrete column 14, and then lock the fastening nut 24. Start the hydraulic cylinder 16, and the hydraulic cylinder 16 drives the pressure plate 17 to contact the upper surface of the concrete column 14. Fix the two groups of first L-shaped clamps 18 and the second L-shaped clamps 19 to the outside of the concrete column 14 through the fixing bolts 20. Place the displacement sensor 23 between the two U-shaped clamps 21, and lock the support rod of the displacement sensor 23 by rotating the fastening bolt 22, thereby fixing the displacement sensor 23. Start the hydraulic cylinder 16, and the hydraulic cylinder 16 drives the pressure plate 17 to move. The pressure plate 17 continuously presses on the concrete column 14. The concrete column 14 drives the second triangular plate 11 to move. The second triangular plate 11 squeezes the second spring 10, and the second spring 10 applies the pressure to the connecting plate 2. The connecting plate 2 drives the fixed seat 8 to move. The fixed seat 8 drives the connecting rod 7 to rotate. When the connecting rod 7 rotates, it drives the sliding sleeve 5 to move. When the sliding sleeve 5 moves, it squeezes the first spring 6, causing it to deform. At the same time, when the connecting plate 2 moves, it drives the fixed head 25 to move. When the fixed head 25 moves, it squeezes the third spring 27 and drives the guide rod 26 to move. Multiple sets of buffer forces conflict with the downward pressure of the hydraulic cylinder 16, so that the creep data of the concrete column 14 is more accurate. The creep data is fed back to the data computer through the displacement sensor 23 and the pressure sensor 13.

[0025] 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. The fully automatic hydraulic loading and automatic measuring concrete creep tester is characterized in that It includes a bottom plate (1) and a connecting plate (2). Fixed blocks (3) are symmetrically and fixedly connected to the top of the bottom plate (1). Fixed rods (4) are fixedly connected between every two of the fixed blocks (3). Sliding sleeves (5) are symmetrically and slidably connected to the outside of each of the fixed rods (4). First springs (6) are fixedly connected between every two of the sliding sleeves (5). Connecting rods (7) are rotatably connected to the outside of each of the sliding sleeves (5). Fixed seats (8) are symmetrically and fixedly connected to the bottom of the connecting plate (2). Each of the fixed seats (8) is rotatably connected to the corresponding connecting rod (7).

2. The fully automatic hydraulic loading and automatic measuring concrete creep meter according to claim 1, characterized in that, A first triangular plate (9) is fixedly connected to the top of the connecting plate (2). Second springs (10) are fixedly connected to the top of the first triangular plate (9) at equal intervals. A second triangular plate (11) is arranged at the top of the second springs (10). Threaded rods (12) are slidably connected to the inside of the second triangular plate (11) at equal intervals. And the bottom end of each of the threaded rods (12) is fixedly connected to the upper surface of the first triangular plate (9).

3. The fully automatic hydraulic loading and automatic measuring concrete creep meter according to claim 2, characterized in that, A pressure sensor (13) is arranged at the top of the second triangular plate (11). A concrete column (14) is arranged at the top of the pressure sensor (13). A third triangular plate (15) is sleeved on the outside of the plurality of threaded rods (12). A hydraulic cylinder (16) is fixedly connected to the inside of the third triangular plate (15). A pressing disc (17) is fixedly connected to the telescopic end of the hydraulic cylinder (16). And the bottom of the pressing disc (17) is in contact with the upper surface of the concrete column (14). Fastening nuts (24) are symmetrically arranged on the outside of the third triangular plate (15). And each of the fastening nuts (24) is threadedly connected to the corresponding threaded rod (12).

4. The fully automatic hydraulic loading and automatic measuring concrete creep meter according to claim 3, wherein First L-shaped clamps (18) are symmetrically sleeved on the outside of the concrete column (14). Second L-shaped clamps (19) are symmetrically arranged on the outside of the concrete column (14). Fixed bolts (20) are symmetrically and fixedly connected between each of the first L-shaped clamps (18) and the second L-shaped clamp (19).

5. The fully automatic hydraulic loading and automatic measuring concrete creep tester according to claim 4, wherein A U-shaped clamp (21) is fixedly connected to the outside of each of the first L-shaped clamps (18). A fastening bolt (22) is threadedly connected to the inside of each of the U-shaped clamps (21). A displacement sensor (23) is arranged between the two U-shaped clamps (21).

6. The full-automatic hydraulic loading and automatic measuring concrete creep meter according to claim 1, characterized in that Fixed heads (25) are symmetrically and fixedly connected to the bottom of the connecting plate (2). A guide rod (26) is fixedly connected to the bottom end of each of the fixed heads (25). A third spring (27) is fixedly connected to the bottom end of each of the fixed heads (25). And the other end of each of the third springs (27) is fixedly connected to the upper surface of the bottom plate (1). Guide holes (28) for cooperating with the guide rods (26) are symmetrically formed in the inside of the bottom plate (1).

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