Device for testing bending resistance of non-rib-out laminated slab

Abstract

The utility model discloses a device for testing the bending resistance of a non-rib laminated slab, which comprises a testboard, a pressed seat is attached to the middle of the upper surface of the testboard, a pressing block is mounted at the position, corresponding to the pressed seat, of the upper part of the testboard, and a group of feeding rollers is rotationally mounted on each of the left side and the right side of the pressed seat; two sets of limiting plates are movably installed on the upper portion of the testing table in a bilateral symmetry mode, and two sets of movable stress plates are movably installed on the upper surface of each set of limiting plates. The whole device can be changed according to the specific size of the laminated plate, a movable seat is arranged to slide in a bottom groove, so that the whole supporting frame moves backwards, an arranged ball screw works to send out a sliding pressing plate, the sliding pressing plate can stably press the two sides of the upper surface of the laminated plate, and meanwhile when the laminated plate is wide, the sliding pressing plate can stably press the two sides of the upper surface of the laminated plate. And two groups of movable stress plates at the upper part of the limiting plate move towards two sides, so that the stress area of the bottom of the laminated slab is increased, and the test result is more stable in the bending resistance test process.

Description

Technical Field

[0001] The utility model relates to the technical field of laminated slab production detection, in particular to a bending performance testing device for a non-reinforcing laminated slab. Background Technique

[0002] A laminated slab is an assembled integral floor slab formed by laminating a precast slab and a cast-in-place reinforced concrete layer. The precast slab is both one of the components of the floor slab structure and a permanent formwork for the cast-in-place reinforced concrete laminated layer. Horizontal equipment pipelines can be laid in the cast-in-place laminated layer. After the laminated slab is processed, bending resistance detection needs to be carried out, that is, to test its deformation under pressure. At present, the existing bending resistance detection equipment for reinforced concrete laminated slabs generally has the disadvantage of being inconvenient to adjust the height.

[0003] According to the authorized announcement number CN 212321325 U, there is disclosed an adjustable bending resistance detection device for reinforced concrete laminated slabs, including a bottom plate, and side plates are fixedly installed on both the left and right sides of the top of the bottom plate. For this adjustable bending resistance detection device for reinforced concrete laminated slabs, by setting a biaxial motor, when it is necessary to adjust the height of the working platform to meet the usage requirements of different detection personnel, the biaxial motor is started, so that the left and right two rotating rods rotate stably under the restriction of the limiting rods, and then the left and right rotating bevel gears can be driven to rotate simultaneously. Through meshing, the meshing bevel gear is driven to rotate, so that the left and right rotating sleeve rods rotate simultaneously. The left and right threaded rods are set to be reverse threads, so that the left and right rotating sleeve rods will push the two threaded rods to lift in the same direction while rotating in the reverse direction, thereby realizing flexible adjustment of the height of the working platform to meet the height requirements of different detection personnel.

[0004] There are some problems in the use of the above patent. The device cannot adaptively adjust the test position, and at the same time, it cannot adjust the test position of the device according to different specifications of laminated slabs, resulting in a change in the compression strength of the laminated slab during the test process, which will greatly reduce the accuracy of the laminated slab test. Therefore, there is a need for a bending performance testing device for a non-reinforcing laminated slab now. Content of the Utility Model

[0005] The purpose of the utility model is to provide a bending performance testing device for a non-reinforcing laminated slab. By setting a movable moving force-bearing plate and a sliding pressing plate, it is ensured that the laminated slab can be stably pressed under different specifications, and the position of the laminated slab can be changed to adapt to the bending resistance test, so as to solve the technical problems mentioned in the background technique.

[0006] To achieve the above object, the utility model provides the following technical solutions: A bending performance testing device for a non-reinforced laminated slab, including a testing table, on the middle of the upper surface of the testing table, a compression seat is fitted and installed, above the testing table, a pressing block is installed corresponding to the position of the compression seat, and on both left and right sides of the compression seat, a set of feeding rollers are respectively rotatably installed;

[0007] Above the testing table, two groups of limiting plates are symmetrically and movably installed on the left and right. On the upper surface of each group of limiting plates, two groups of moving stress plates are movably installed;

[0008] Behind the testing table, a support frame is slidably installed. On both left and right sides of the support frame, two groups of mounting brackets are symmetrically installed. In front of each group of mounting brackets, a sliding pressing plate is movably installed.

[0009] Preferably, a bottom groove is opened at the bottom of the testing table, an auxiliary pressing groove is opened at the top end of the compression seat, two groups of limiting seats are symmetrically installed on both left and right sides of the compression seat, and the two groups are respectively installed inside the corresponding side limiting seats.

[0010] Preferably, four groups of storage holes are symmetrically opened in pairs on the left and right on the upper surface of the testing table. Inside each group of storage holes, a set of electric push rods are installed. Each group of limiting plates is bolted to the upper parts of the two electric push rods on the same side.

[0011] Preferably, four groups of sliding grooves are symmetrically opened in pairs in the front and back on the upper surface of the limiting plates. At the bottom of each group of moving stress plates, a set of inner sliding blocks are installed, and the inner sliding blocks are slidably installed inside the sliding grooves.

[0012] Preferably, a moving seat is slidably installed inside the bottom groove. On both left and right sides of the moving seat, two groups of control wheels are electrically driven and installed. The support frame is fixedly installed on the back side of the moving seat.

[0013] Preferably, on the upper surface of the front side of the support frame, a mounting plate is fixedly installed. On the upper part of the mounting plate, a number of hydraulic push rods are provided. The telescopic ends of the hydraulic push rods extend out from inside the mounting plate and are bolted to the pressing block for installation.

[0014] Preferably, on the upper and lower sides of each group of mounting brackets, a set of L-shaped stress brackets are respectively bolted. Inside the mounting brackets, a ball screw is installed through. In front of the mounting brackets, on both left and right sides of the ball screw, four groups of limiting brackets are symmetrically installed in pairs. At the front end of each group of limiting brackets, a set of baffles are fixedly installed.

[0015] Preferably, a threaded hole is opened at the center of the back side of the sliding pressing plate. On both sides of the threaded hole at the back side of the sliding pressing plate, four groups of limiting holes are opened. The ball screw is threadedly connected to the threaded hole, and the limiting brackets are slidably installed inside the limiting holes.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The movement of the laminated board is controlled by the feeding roller set inside the limit seat, so that the center position of the laminated board corresponds to the position where the pressing block presses down, ensuring the stability of the bending resistance test. After the position of the laminated board is fixed, the laminated board is lifted as a whole by the electric push rod, making the test effect more intuitive.

[0018] 2. The whole device can be changed according to the specific size of the laminated board. The moving seat is set to slide inside the bottom groove, so that the whole support frame moves backward. And the ball screw set works to send out the sliding pressing plate, so that the sliding pressing plate can stably press both sides of the upper surface of the laminated board. At the same time, when the laminated board is wider, the two groups of moving stress-bearing plates on the upper part of the limit plate move to both sides, increasing the stress-bearing area at the bottom of the laminated board, and further making the test results more stable during the bending resistance test. Description of the Drawings

[0019] Figure 1 It is a schematic structural view of the present utility model;

[0020] Figure 2 It is a schematic view of the use state of the device of the present utility model;

[0021] Figure 3 It is a schematic exploded view of the installation structure of the moving stress-bearing plate of the present utility model;

[0022] Figure 4 It is a schematic exploded view of the installation structure of the pressing block of the present utility model;

[0023] Figure 5 It is a schematic exploded view of the installation structure of the sliding pressing plate of the present utility model.

[0024] In the figure: 1. Test bench; 2. Bottom groove; 3. Compression seat; 4. Auxiliary compression groove; 5. Limit seat; 6. Feeding roller; 7. Storage hole; 8. Electric push rod; 9. Limit plate; 10. Chute; 11. Moving stress-bearing plate; 12. Moving seat; 13. Control wheel; 14. Support frame; 15. Mounting plate; 16. Hydraulic push rod; 17. Pressing block; 18. Mounting frame; 19. L-shaped stress-bearing bracket; 20. Ball screw; 21. Limit frame; 22. Baffle; 23. Sliding pressing plate; 24. Threaded hole; 25. Limit hole. Detailed Implementation Manner

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0026] The utility model provides a bending performance test device for a ribless composite slab, as follows Figures 1-5 shown, including a test bench 1, a compression seat 3 is fitted and installed in the middle of the upper surface of the test bench 1, a pressing block 17 is installed at the position corresponding to the compression seat 3 on the upper part of the test bench 1, and a set of feeding rollers 6 are rotatably installed on both the left and right sides of the compression seat 3; the compression seat 3 installed on the upper surface of the test bench 1 enhances the protection for the bending resistance test of the composite slab. The pressing block 17 is set at the position corresponding to the compression seat 3 to fix the test position during the compression test. The feeding rollers 6 rotating on both sides of the compression seat 3 can control the use position of the composite slab, making the test position of the composite slab remain centered and improving the test accuracy of the device.

[0027] Two groups of limiting plates 9 are symmetrically and movably installed on the upper part of the left and right sides of the test bench 1. Two groups of moving stress plates 11 are movably installed on the upper surface of each group of limiting plates 9. The two groups of limiting plates 9 installed on the upper part of the test bench 1 can be lifted and lowered to ensure that they will not affect the feeding rollers 6 during the test. At the same time, the moving stress plates 11 slidably installed on the upper part of the limiting plates 9 can increase the stress area at the bottom of the composite slab;

[0028] A support frame 14 is slidably installed on the rear side of the test bench 1. Two groups of mounting frames 18 are symmetrically installed on both the left and right sides of the support frame 14. A sliding pressing plate 23 is movably installed on the front side of each group of mounting frames 18. The support frame 14 installed on the rear side of the test bench 1 limits the installation height of the pressing block 17 and the installation position of the sliding pressing plate 23, making the test process of the composite slab more stable.

[0029] Preferably, a bottom groove 2 is opened at the bottom of the test bench 1, an auxiliary pressing groove 4 is opened at the top end of the compression seat 3, and two groups of limiting seats 5 are symmetrically installed on both the left and right sides of the compression seat 3. Two groups are respectively installed inside the corresponding limiting seats 5. The bottom groove 2 opened at the bottom of the test bench 1 limits the moving seat 12, and the moving seat 12 moves to adapt to composite slabs of different widths.

[0030] Furthermore, four groups of storage holes 7 are symmetrically opened in pairs on the upper surface of the test bench 1. A set of electric push rods 8 are installed inside each group of storage holes 7. Each group of limiting plates 9 is bolted to the upper parts of the two electric push rods 8 on the same side. The storage holes 7 opened on the upper surface of the test bench 1 can store the electric push rods 8. The electric push rods 8 can control the lifting and lowering of the limiting plates 9, thereby completing the control of the test height of the moving composite slab and ensuring that the composite slab contacts the sliding pressing plate 23 to ensure the safety and stability of the test.

[0031] Furthermore, four groups of sliding grooves 10 are symmetrically arranged in pairs on the front and rear of the upper surface of the limiting plate 9. A set of inner sliders are installed at the bottom of each moving stress-bearing plate 11, and the inner sliders are slidably installed inside the sliding grooves 10. The sliding grooves 10 opened on the upper surface of the limiting plate 9 cooperate with the inner sliders at the bottom of the moving stress-bearing plate 11 to limit the moving stress-bearing plate 11, enabling the moving stress-bearing plate 11 to move, thereby improving the test stability for laminated plates of different widths.

[0032] It should be noted that a moving seat 12 is slidably installed inside the bottom groove 2. Two groups of control wheels 13 are electrically driven and installed on the left and right sides of the moving seat 12 respectively. The support frame 14 is fixedly installed on the rear side of the moving seat 12. The control wheels 13 on both sides of the moving seat 12 are controlled by an electric driver to ensure the overall mobility of the moving seat 12, enabling the device to adapt to wider laminated plates.

[0033] Specifically, an installation plate 15 is fixedly installed on the upper surface of the front side of the support frame 14. Several groups of hydraulic push rods 16 are arranged on the upper part of the installation plate 15. The telescopic ends of the hydraulic push rods 16 extend out from inside the installation plate 15 and are bolted to the pressing block 17. The installation plate 15 is longer than the width of the test bench 1, so that when the support frame 14 moves backward, it can still ensure complete coverage of the laminated plate, thus better completing the bending resistance test of the laminated plate. The set hydraulic push rods 16 control the pressing block 17 to press down to improve the accuracy of the overall test of the device.

[0034] In addition, a set of L-shaped stress-bearing brackets 19 are bolted and installed on the upper and lower sides of each installation frame 18 respectively. A ball screw 20 is installed through the installation frame 18. Four groups of limiting frames 21 are symmetrically installed in pairs on the left and right sides of the ball screw 20 on the front side of the installation frame 18. A baffle 22 is fixedly installed at the front end of each group of limiting frames 21. The installed L-shaped stress-bearing brackets 19 share the service strength of the installation frame 18. The rotation of the ball screw 20 installed on the front side of the installation frame 18 can control the movement of the sliding pressing plate 23, and the limiting frames 21 on both sides of the ball screw 20 can provide sufficient pressure for the sliding pressing plate 23, enabling the sliding pressing plate 23 to cooperate with the rising laminated plate to complete its pressing and limiting.

[0035] Preferably, a threaded hole 24 is opened at the center of the rear side of the sliding pressing plate 23. Four groups of limiting holes 25 are opened on both sides of the threaded hole 24 at the rear side of the sliding pressing plate 23. The ball screw 20 is threadedly connected to the threaded hole 24. The limiting frames 21 are slidably installed inside the limiting holes 25. The baffle 22 installed at the end of the limiting frames 21 can prevent the sliding pressing plate 23 from completely disengaging from the limiting frames 21, resulting in insufficient downward pressure and causing safety problems in the test.

[0036] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for testing the bending resistance of unreinforced composite plates, characterized by: The test bench (1) comprises a pressure seat (3) fitted in the middle of the upper surface of the test bench (1), a pressure block (17) is installed at a position corresponding to the pressure seat (3) on the upper part of the test bench (1), and a group of feeding rollers (6) are rotatably installed on the left and right sides of the pressure seat (3); Two groups of limit plates (9) are movably mounted on the upper portion of the test bench (1) in a symmetrical manner, and two groups of movable force-bearing plates (11) are movably mounted on the upper surface of each group of limit plates (9); A support frame (14) is slidably mounted on the rear side of the test bench (1), two groups of mounting frames (18) are symmetrically mounted on the left and right sides of the support frame (14), and a sliding pressure plate (23) is movably mounted on the front side of each group of mounting frames (18).

2. The device for testing the bending properties of unreinforced composite slabs according to claim 1, characterized in that: The bottom of the test bench (1) is provided with a bottom groove (2), the top of the pressure seat (3) is provided with an auxiliary pressure groove (4), and two groups of limit seats (5) are symmetrically installed on the left and right sides of the pressure seat (3), and the two groups are respectively installed inside the corresponding side limit seats (5).

3. The device for testing the bending properties of unreinforced composite slabs according to claim 2, characterized in that: Four groups of receiving holes (7) are symmetrically opened in pairs on the left and right sides of the upper surface of the test bench (1), a group of electric push rods (8) are installed inside each group of the receiving holes (7), and each group of the limiting plates (9) is bolted to the upper parts of the two groups of electric push rods (8) on the same side.

4. The device for testing the bending properties of unreinforced composite slabs according to claim 3, characterized in that: Four groups of slide grooves (10) are symmetrically provided on the upper surface of the limit plate (9) in pairs. A group of inner sliding blocks is installed at the bottom of each group of movable force-bearing plates (11), and the inner sliding blocks are slidably installed inside the slide grooves (10).

5. The device for testing the bending properties of unreinforced composite slabs according to claim 4, characterized in that: A moving seat (12) is slidably mounted inside the bottom groove (2), two sets of control wheels (13) are electrically driven and mounted on the left and right sides of the moving seat (12), and the support frame (14) is fixedly mounted on the rear side of the moving seat (12).

6. The device for testing the bending properties of unreinforced composite slabs according to claim 5, characterized in that: A mounting plate (15) is fixedly mounted on the upper front surface of the support frame (14), and a plurality of groups of hydraulic push rods (16) are arranged on the upper portion of the mounting plate (15). The telescopic ends of the hydraulic push rods (16) extend from the inside of the mounting plate (15) and are bolted to the pressure blocks (17).

7. The device for testing the bending properties of unreinforced composite slabs according to claim 6, characterized in that: A group of L-shaped force brackets (19) are bolted to the upper and lower sides of each group of the mounting frames (18), a ball screw (20) is installed through the interior of the mounting frames (18), and four groups of limit frames (21) are symmetrically installed on the left and right sides of the ball screw (20) on the front side of the mounting frames (18), and a group of baffles (22) are fixedly installed at the front end of each group of the limit frames (21).

8. The device for testing the bending properties of unreinforced composite slabs according to claim 7, characterized in that: A threaded hole (24) is provided at the center of the rear side of the sliding pressure plate (23), and four groups of limiting holes (25) are provided on both sides of the threaded hole (24) on the rear side of the sliding pressure plate (23). The ball screw (20) is threadedly connected to the threaded hole (24), and the limiting frame (21) is slidably installed inside the limiting hole (25).

Images