Testing device for detecting structural performance of precast concrete laminated slab bottom plate

Abstract

The utility model belongs to the technical field of laminated slab bottom plates, and particularly relates to a test device for detecting the structural performance of a prefabricated concrete laminated slab bottom plate, which comprises a detection table, limiting shells are fixedly connected to two ends of the detection table, a driving part is arranged at the bottom of the detection table, and the driving part comprises a motor mounted at the bottom of the detection table. The output end of the motor is fixedly connected with a lead screw, the surface of the lead screw is in threaded connection with a first sleeve shell, sliding rods are arranged on the two sides of the lead screw, the surfaces of the sliding rods are movably sleeved with second sleeve shells, the two sides of the first sleeve shell are fixedly connected with connecting rods, the other ends of the connecting rods are fixedly connected with the second sleeve shells, and the top of each second sleeve shell is fixedly connected with a connecting plate. The top of the connecting plate extends into the limiting shell and is movably connected with the limiting shell. According to the test device for detecting the structural performance of the prefabricated concrete laminated slab bottom plate, the two groups of rollers can synchronously and horizontally move along the surface of the laminated slab bottom plate, and the mode is simple to operate.

Description

Technical Field

[0001] This utility model relates to the field of composite slab base plate technology, and in particular to a test device for detecting the structural performance of precast concrete composite slab base plates. Background Technology

[0002] Precast concrete composite slabs, also known as precast composite floor slabs or precast concrete beams and slabs, are composite materials made of concrete and steel. They have high strength, rigidity, and durability. The precast concrete composite slab base plate is a component of the precast concrete composite slab structure, and it has many advantages such as structural stability, convenient installation, time saving, and improved building performance.

[0003] During use, precast concrete composite slab base plates will face problems such as heavy loads, deformation, cracks, and spalling. Therefore, after production, their performance needs to be tested. Performance testing of precast concrete composite slab base plates includes bending testing, flatness testing, stress testing, and stiffness testing.

[0004] A search revealed that Chinese patent CN219319300U discloses a device for testing the flatness of precast concrete composite slabs. This device requires moving two sets of testing plates to the other end of the precast concrete composite slab base plate and comparing the scale values ​​on the scale before testing to determine whether the precast concrete composite slab base plate is qualified. The overall operation is quite cumbersome. Utility Model Content

[0005] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0006] Specifically, the technical problem to be solved by this utility model is to provide a test device for testing the structural performance of the bottom plate of a precast concrete composite slab, so as to solve the technical problem of cumbersome operation when testing the flatness of the bottom plate of a precast concrete composite slab.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A testing device for detecting the structural performance of precast concrete composite slab base plates includes a testing platform and legs fixed to the bottom of the testing platform. Limiting shells are fixedly connected to both ends of the testing platform. A driving component is provided at the bottom of the testing platform. The driving component includes a motor installed at the bottom of the testing platform. A lead screw is fixedly connected to the output end of the motor. A first housing is threaded onto the surface of the lead screw. Sliding rods are provided on both sides of the lead screw. A second housing is movably sleeved onto the surface of the sliding rods. Connecting rods are fixedly connected to both sides of the first housing. The other end of each connecting rod is fixedly connected to the second housing. A connecting plate is fixedly connected to the top of the second housing. The top of the connecting plate extends into and is movably connected to the limiting shell. A T-block is fixedly connected to the top of the connecting plate. A connecting block is fixedly connected to the top of the T-block. An adjusting component is provided on the top of the connecting block. A testing component is installed inside the adjusting component.

[0009] As an improved technical solution, the limiting shell has a T-shaped groove and a guide groove inside. The guide groove is located at the bottom of the T-shaped groove and the two are connected. The connecting block is located at the top of the limiting shell and is movably connected to it. The T-shaped block is located inside the T-shaped groove and is movably connected to it. The connecting plate extends into the T-shaped groove through the guide groove and is fixedly connected to the T-shaped block.

[0010] As an improved technical solution, the adjusting component includes an adjusting shell fixed to the top of the connecting block. A screw is rotatably connected inside the adjusting shell. A knob is provided on the top of the adjusting shell. The bottom of the knob extends into the interior of the adjusting shell and is fixedly connected to the screw. A lifting rod is also provided inside the adjusting shell. The lifting rod is sleeved on the surface of the screw and threadedly connected to it. One end of the lifting rod extends to the outside of the adjusting shell and is movably connected to it.

[0011] As an improved technical solution, a limiting strip is fixedly connected to the inner side of the adjusting shell, and a limiting groove is formed on the surface of the lifting rod. The limiting strip is located inside the limiting groove and is movably connected to it.

[0012] As an improved technical solution, the detection component includes a housing fixed to the other end of the lifting rod, a movable rod movably sleeved inside the housing, a retaining ring fixedly connected to the surface of the movable rod, a positioning ring fixedly connected inside the housing, the movable rod slidingly connected to the positioning ring, and a compression spring sleeved on the outer surface of the movable rod, with both ends of the compression spring fixedly connected to the retaining ring and the positioning ring respectively.

[0013] As an improved technical solution, a swing arm is fixedly connected to the surface of the moving rod. The swing arm is located at the top of the positioning ring. A sliding groove is opened on the surface of the outer shell. The swing arm is located inside the sliding groove and is movably connected to it. There are two sets of swing arms, which correspond to each other. The end of the swing arm away from the moving rod is plate-shaped.

[0014] As an improved technical solution, the surface of the outer shell is provided with a scale, and the scale is provided in two sets, which are respectively located on both sides of the sliding groove.

[0015] As an improved technical solution, the bottom of the housing is provided with a frame, both ends of the moving rod penetrate the housing, and one end extends to the bottom of the housing and is fixedly connected to the frame. A roller is movably connected to the inner side of the frame.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are:

[0017] 1. This utility model, through the setting of the driving component, can directly enable two sets of rollers to move synchronously and horizontally along the surface of the composite plate bottom plate, avoiding the tediousness caused by manual driving one by one, and this method is simple to operate.

[0018] 2. This utility model, through the setting of the adjustment component, can perform level testing on the bottom plate of the composite plate of different thicknesses, thereby improving the practicality of the device. At the same time, there is no need to record the scale value before the test. It is only necessary to observe whether the position of the pendulum rod changes or the scale changes to determine whether the bottom plate of the composite plate is qualified, saving the step of comparing scale values, thus making the testing operation simpler. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of the test device for detecting the structural performance of the bottom plate of a precast concrete composite slab according to this utility model.

[0021] Figure 2 This is a schematic diagram of the bottom structure of the testing platform of the test device for testing the structural performance of the precast concrete composite slab bottom plate according to this utility model.

[0022] Figure 3 This is a schematic diagram of the driving and adjusting components of the test device for detecting the structural performance of the precast concrete composite slab bottom plate according to this utility model.

[0023] Figure 4 This is an exploded structural diagram of the adjusting and testing components of the test device for detecting the structural performance of the precast concrete composite slab bottom plate according to this utility model.

[0024] Figure 5 This is a schematic diagram of the exploded structure of the test piece of the test device for testing the structural performance of the bottom plate of precast concrete composite slabs according to this utility model.

[0025] Figure 6 This is a cross-sectional structural diagram of the test piece of the test device for testing the structural performance of the bottom plate of a precast concrete composite slab according to this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Testing table; 11. Support leg; 2. Limiting shell; 21. T-slot; 22. Guide groove; 3. Driving component; 31. Motor; 32. Lead screw; 33. First housing; 34. Sliding rod; 35. Second housing; 36. Connecting rod; 37. Connecting plate; 38. T-block; 39. Connecting block; 4. Adjusting component; 41. Adjusting shell; 42. Screw; 43. Knob; 44. Limiting strip; 45. Lifting rod; 46. Limiting groove; 5. Testing component; 51. Outer shell; 511. Positioning ring; 52. Moving rod; 53. Compression spring; 54. Retaining ring; 55. Frame; 56. Roller; 57. Swing rod; 58. Sliding groove; 59. Scale. Detailed Implementation

[0028] 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.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0031] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] like Figures 1 to 6 As shown in the figure, this embodiment provides a test device for testing the structural performance of the precast concrete composite slab bottom plate. The test device for testing the structural performance of the precast concrete composite slab bottom plate includes a test platform 1 and support legs 11 fixed to the bottom of the test platform 1. The support legs 11 are provided in four sets, of which two sets of support legs 11 have grooves inside to facilitate the placement of connecting rods 36. Limiting shells 2 are fixedly connected to both ends of the test platform 1, and a driving component 3 is provided at the bottom of the test platform 1.

[0033] The driving component 3 includes a motor 31 installed at the bottom of the testing table 1. A lead screw 32 is fixedly connected to the output end of the motor 31. A first housing 33 is threadedly connected to the surface of the lead screw 32. Slide rods 34 are provided on both sides of the lead screw 32. A second housing 35 is movably sleeved on the surface of the slide rods 34. Connecting rods 36 are fixedly connected to both sides of the first housing 33. The other end of the connecting rods 36 is fixedly connected to the second housing 35. Positioning blocks are rotatably connected to both ends of the lead screw 32 and the slide rods 34. The top of the positioning blocks is fixedly connected to the testing table 1, which can ensure the stability of the lead screw 32 and the slide rods 34 and provide support for them.

[0034] The top of the second housing 35 is fixedly connected to a connecting plate 37. The top of the connecting plate 37 extends into the interior of the limiting housing 2 and is movably connected thereto. The top of the connecting plate 37 is fixedly connected to a T-block 38. The top of the T-block 38 is fixedly connected to a connecting block 39. The top of the connecting block 39 is provided with an adjusting member 4. The inside of the adjusting member 4 is equipped with a detection member 5. The sliding rod 34 can provide support and guidance for the second housing 35. The lead screw 32 can provide power for the first housing 33 and the detection member 5. The detection member 5 can be moved along the surface of the bottom plate of the composite plate by driving the motor 31, which makes the detection operation easier.

[0035] The limiting shell 2 has a T-shaped groove 21 and a guide groove 22 inside. The guide groove 22 is located at the bottom of the T-shaped groove 21 and the two are connected. The connecting block 39 is located at the top of the limiting shell 2 and is movably connected to it to facilitate the movement of the connecting plate 37.

[0036] The T-block 38 is located inside the T-slot 21 and is movably connected to it. The connecting plate 37 extends through the guide groove 22 into the interior of the T-slot 21 and is fixedly connected to the T-block 38, which can ensure the stability of the adjustment component 4 and the detection component 5 when they move.

[0037] The adjusting component 4 includes an adjusting shell 41 fixed to the top of the connecting block 39. A screw 42 is rotatably connected inside the adjusting shell 41. A knob 43 is provided on the top of the adjusting shell 41. The bottom of the knob 43 extends into the interior of the adjusting shell 41 and is fixedly connected to the screw 42 to facilitate the driving of the screw 42.

[0038] The interior of the adjusting housing 41 is also provided with a lifting rod 45. The lifting rod 45 is sleeved on the surface of the screw 42 and threadedly connected to it. One end of the lifting rod 45 extends to the outside of the adjusting housing 41 and is movably connected to it, which can facilitate the lifting operation of the detection piece 5, so as to facilitate the detection of composite plate bottom plates of different thicknesses, and make the final detection results clear at a glance.

[0039] A limiting strip 44 is fixedly connected to the inner side of the adjusting shell 41, and a limiting groove 46 is opened on the surface of the lifting rod 45. The limiting strip 44 is located inside the limiting groove 46 and is movably connected to it, which can ensure the stability of the lifting rod 45 when it is raised or lowered.

[0040] The testing component 5 includes a housing 51 fixed to the other end of the lifting rod 45. A movable rod 52 is movably sleeved inside the housing 51. A retaining ring 54 is fixedly connected to the surface of the movable rod 52. A positioning ring 511 is fixedly connected inside the housing 51. The movable rod 52 is slidably connected to the positioning ring 511. A compression spring 53 is sleeved on the outer surface of the movable rod 52. The two ends of the compression spring 53 are fixedly connected to the retaining ring 54 and the positioning ring 511, respectively. The housing 51 is located on the top of the testing platform 1.

[0041] A swing arm 57 is fixedly connected to the surface of the movable rod 52. The swing arm 57 is located on the top of the positioning ring 511. A sliding groove 58 is opened on the surface of the outer shell 51. The swing arm 57 is located inside the sliding groove 58 and is movably connected to it. There are two sets of swing arms 57, which correspond to each other. The end of the swing arm 57 away from the movable rod 52 is plate-shaped, which can expand the field of vision of the staff and avoid the staff being able to observe the state of the swing arm 57 only in a designated area.

[0042] The surface of the outer casing 51 is provided with a scale 59. There are two sets of scales 59, which are located on both sides of the sliding groove 58, so that the staff can more comprehensively observe the level of the composite plate bottom plate.

[0043] The bottom of the outer casing 51 is provided with a frame 55. Both ends of the moving rod 52 pass through the outer casing 51, and one end extends to the bottom of the outer casing 51 and is fixedly connected to the frame 55. The inner side of the frame 55 is movably connected with a roller 56, which can facilitate the horizontal inspection of the bottom plate of the composite plate.

[0044] In use, the composite plate base is placed on the surface of the testing table 1. Then, the motor 31 is started to rotate the electric screw 32, which drives the first housing 33 to move away from the motor 31. The connecting rod 36 drives the two sets of second housings 35 to move synchronously. This causes the roller 56 to move towards the composite plate base through the connecting plate 37, T-block 38, connecting block 39, and adjusting component 4 until it is at the top of the composite plate base. Then, according to the thickness of the composite plate base, the screw 42 is rotated to drive the lifting rod 45 to perform lifting operations. This causes the testing component 5 and the roller 56 to move towards the surface of the composite plate base until the roller 56 is in contact with the surface of the composite plate base. This allows for the levelness testing of composite plate bases of different thicknesses, thereby increasing the practicality of the device. At the same time, compared with the comparison document, this method does not require recording the position of the scale 59 of the swing rod 57 before testing, thus saving steps and making the levelness testing operation simpler.

[0045] Then, the motor 31 is restarted to drive the lead screw 32 to rotate, which in turn drives the roller 56 to move along the surface of the composite plate bottom plate. If it tilts, the roller 56 will drive the moving rod 52 to descend due to the deformation of the compression spring 53, so that the roller 56 always keeps in contact with the surface of the composite plate bottom plate. Alternatively, the moving rod 52 can be compressed by the compression spring 53 through the retaining ring 54 and rise along the inside of the outer shell 51. When the moving rod 52 rises and falls, it will drive the swing rod 57 to rise and fall along the inside of the sliding groove 58. At the same time, the operator can observe the change of the swing rod 57 inside the scale 59 to judge whether it is qualified.

[0046] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A test device for detecting the performance of a precast concrete composite slab bottom plate structure, comprising a detection table (1) and a supporting leg (11) fixed at the bottom of the detection table (1), characterized in that: Both ends of the detection platform (1) are fixedly connected with a limiting shell (2), and the bottom of the detection platform (1) is provided with a driving piece (3); The driving piece (3) comprises a motor (31) mounted on the bottom of the detection platform (1), the output end of the motor (31) is fixedly connected with a lead screw (32), the surface of the lead screw (32) is threadedly connected with a first sleeve shell (33), both sides of the lead screw (32) are provided with sliding rods (34), the surface of the sliding rod (34) is movably sleeved with a second sleeve shell (35), both sides of the first sleeve shell (33) are fixedly connected with connecting rods (36), and the other end of the connecting rod (36) is fixedly connected with the second sleeve shell (35). The top of the second sleeve shell (35) is fixedly connected with a connecting plate (37), the top of the connecting plate (37) extends to the inside of the limiting shell (2) and is movably connected therewith, the top of the connecting plate (37) is fixedly connected with a T-shaped block (38), the top of the T-shaped block (38) is fixedly connected with a connecting block (39), and the top of the connecting block (39) is provided with an adjusting piece (4), and the inside of the adjusting piece (4) is mounted with a detection piece (5).

2. The test device for detecting the performance of the bottom plate structure of the precast concrete composite slab according to claim 1, characterized in that: The inside of the limiting shell (2) is provided with a T-shaped groove (21) and a guide groove (22), the guide groove (22) is located at the bottom of the T-shaped groove (21) and communicates with the T-shaped groove (21), and the connecting block (39) is located at the top of the limiting shell (2) and movably connected therewith; The T-shaped block (38) is located in the inside of the T-shaped groove (21) and movably connected therewith, and the connecting plate (37) extends to the inside of the T-shaped groove (21) through the guide groove (22) and is fixedly connected with the T-shaped block (38).

3. The test device for detecting the performance of the bottom slab structure of the precast concrete composite slab according to claim 2, characterized in that: The adjusting piece (4) comprises an adjusting shell (41) fixed on the top of the connecting block (39), a screw rod (42) rotatably connected in the inside of the adjusting shell (41), and a knob (43) provided on the top of the adjusting shell (41), wherein the bottom of the knob (43) extends to the inside of the adjusting shell (41) and is fixedly connected with the screw rod (42). The inside of the adjusting shell (41) is further provided with a lifting rod (45), the lifting rod (45) is sleeved on the surface of the screw rod (42) and is threadedly connected with the screw rod (42), and one end of the lifting rod (45) extends to the outside of the adjusting shell (41) and is movably connected therewith.

4. The test device for detecting the performance of the bottom slab structure of the precast concrete composite slab according to claim 3, characterized in that: The inside of the adjusting shell (41) is fixedly connected with a limiting strip (44), and the surface of the lifting rod (45) is provided with a limiting groove (46), the limiting strip (44) is located in the inside of the limiting groove (46) and is movably connected therewith.

5. The test device for detecting the performance of the bottom slab structure of the precast concrete composite slab according to claim 4, characterized in that: The detection piece (5) comprises an outer shell (51) fixed on the other end of the lifting rod (45), a moving rod (52) movably sleeved in the inside of the outer shell (51), a stop ring (54) fixedly connected on the surface of the moving rod (52), a positioning ring (511) fixedly connected in the inside of the outer shell (51), and the moving rod (52) is slidably connected with the positioning ring (511), the outer surface of the moving rod (52) is sleeved with a compression spring (53), and the two ends of the compression spring (53) are fixedly connected with the stop ring (54) and the positioning ring (511) respectively.

6. The test apparatus for detecting the performance of a precast concrete composite slab bottom plate structure according to claim 5, characterized in that: The surface of the moving rod (52) is fixedly connected with a swing rod (57), the swing rod (57) is located at the top of the positioning ring (511), the surface of the shell (51) is provided with a sliding groove (58), the swing rod (57) is located in the inside of the sliding groove (58) and is movably connected with it, the swing rod (57) is provided with two groups and corresponds to each other, and the end, away from the moving rod (52), of the swing rod (57) is plate-shaped.

7. The test apparatus for testing the performance of a precast concrete composite slab bottom slab structure according to claim 6, characterized in that: The surface of the shell (51) is provided with a scale (59), the scale (59) is provided with two groups and is respectively located at the two sides of the sliding groove (58).

8. The test apparatus for detecting the performance of a precast concrete composite slab bottom plate structure according to claim 7, characterized in that: The bottom of the shell (51) is provided with a frame (55), both ends of the moving rod (52) penetrate through the shell (51), and one end thereof extends to the bottom of the shell (51) and is fixedly connected with the frame (55), and the inside of the frame (55) movably connects with a roller (56).

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